Patent Publication Number: US-2019174066-A1

Title: Image display apparatus having image-related information displaying function

Description:
This is a Continuation of application Ser. No. 15/859,966 filed Jan. 2, 2018, which in turn is a Division of application Ser. No. 15/131,395 filed Apr. 18, 2016 (now U.S. Pat. No. 9,894,220), which is a Continuation of application Ser. No. 14/808,549 filed Jul. 24, 2015 (now abandoned), which is a Division of application Ser. No. 14/327,903 filed Jul. 10, 2014 (now abandoned), which is a Continuation of U.S. patent application Ser. No. 13/909,283, filed Jun. 4, 2013 (now U.S. Pat. No. 8,804,006), which is a Continuation of U.S. patent application Ser. No. 12/926,564 filed Nov. 24, 2010 (now U.S. Pat. No. 8,482,634), which is a Continuation of U.S. patent application Ser. No. 12/149,231 filed Apr. 29, 2008 (now U.S. Pat. No. 7,864,218), which is a Continuation of U.S. patent application Ser. No. 10/497,146, filed May 28, 2004 (now U.S. Pat. No. 7,382,405), which is a National Phase of International Patent Application No. PCT/JP2002/12625, filed Dec. 3, 2002. The entire contents of each of the above-identified applications are hereby incorporated by reference. 
     The disclosures of the following priority applications are herein incorporated by reference in their entireties: Japanese Patent Application No. 2001-368014 filed Dec. 3, 2001; Japanese Patent Application No. 2001-373831 filed Dec. 7, 2001 and Japanese Patent Application No. 2001-375568 filed Dec. 10, 2001. 
    
    
     BACKGROUND 
     The present invention relates to an electronic apparatus that identifies a user and performs an operation corresponding to the user and a method for identifying a user of an electronic apparatus and identifying an electronic apparatus to be utilized by the user and, more specifically, it relates to an electronic apparatus that identifies a user through communication executed between the electronic apparatus and the user and a method for identifying an electronic apparatus user and an electronic apparatus to be utilized by a user by executing communication between the electronic apparatus and the user. 
     The present invention also relates to an electronic camera, an image display apparatus and an image display system that stores electronic image data obtained by photographing a desired subject with the electronic camera into a storage medium, reads out the electronic image data from the storage medium and displays an image reproduced from the electronic image data at a specific screen and, more specifically, it relates to an electronic camera, an image display apparatus and an image display system that brings up a display of information related to the image data at the screen at which the image reproduced from the image data is displayed. 
     In addition, the present invention relates to an information transmission system and an information transmission method through which data are exchanged among portable terminals or the like and, more specifically, it relates to an image transmission system and an image transmission method through which electronic image data obtained by photographing a desired subject with a photographing apparatus such as an electronic camera are transmitted to an electronic instrument such as a portable telephone terminal having an image display function. 
     Electronic apparatuses such as cameras that identify electronic apparatus users and engage in a specific operation corresponding to a given user are known in the related art. For instance, Japanese Laid-Open Patent Publication No. H 11-164282 discloses a digital camera having a card read unit, which allows a user to enter personal information to the digital camera through the card reader unit, automatically connects with a data server corresponding to the user based upon the entered personal information and automatically transfers image data obtained through a photographing operation performed with the digital camera to the data server. 
     The electronic apparatus in the related art described above requires a magnetic card or a memory card having stored therein the personal information to be directly loaded at the electronic apparatus or necessitates a wired connection of the magnetic card or the memory card to the electronic apparatus so that the personal information can be read into the electronic apparatus. 
     However, having to directly load a magnetic card or a memory card at the electronic apparatus or connect the magnetic card or the memory card to the electronic apparatus, by means of wiring, each time the user needs to use the electronic apparatus places a considerable onus on the user and, moreover, there is a problem in that the electronic apparatus cannot be used immediately in a situation that arises suddenly. For instance, there is a risk of missing a good photo opportunity while setting the personal information in the digital camera. 
     In addition, in the electronic apparatus in the related art described above, the personal information is utilized for limited purposes such as the automatic selection of the recipient to which images are to be transmitted and setting and display operations are performed in the electronic apparatus without fully reflecting the personal information. As a result, the user may not always be satisfied with the ease of operation it affords. The design of the electronic apparatus is particularly lax in consideration of users such as first-time users, seniors and children, who may not be accustomed to operating electronic apparatuses. 
     People also store image data obtained through a photographing operation performed with an electronic camera on a trip or the like into a memory card and later review images reproduced from the image data displayed at a liquid crystal display screen of the electronic camera in which the memory card is loaded or at a screen of a personal computer to which the image data have been transferred from the memory card. 
     The user reviewing electronic image data in the related art as described above is simply allowed to view the reproduced images on display, and there is difficulty in expanding the range of information utilization beyond reviewing of the images. 
     For instance, if the user becomes interested in a historical structure or the like photographed in the image he is currently reviewing, he has to stop reviewing images temporarily to look it up in an encyclopedia or to conduct a search on the Internet. In addition, if the user becomes interested in a person (the person&#39;s name, hobby, etc.) photographed in the image he is reviewing, the user cannot obtain that person&#39;s personal information immediately on the spot. 
     In addition, image data obtained through a photographing operation of an electronic camera are transferred to another image display terminal for reviewing the image data through an off-line information transmission method, in which the image data are temporarily saved into a memory card and then the memory card is loaded at the other image display terminal or through an on-line information transmission method, in which the image data are transmitted through a wireless or wired communication from the electronic camera to the other image display terminal, in the related art. For instance, Japanese Laid-Open Patent Publication No. H 10-341388 discloses an image transmission system which enables a direct transmission of image data from an electronic camera to another electronic camera through optical communication achieved by using infrared light. 
     There are disadvantages to the off-line image transmission system and the off-line image transmission method in the related art described above in that since they necessitate an exchange of an information storage medium such as a memory card between the electronic camera and the image display terminal, the storage medium must be frequently loaded and unloaded, and data cannot be obtained and recorded through a photographing operation in the meantime, and in that since the recording medium must be physically transported, there is a time lag before the data can be utilized on the recipient side. 
     While the need to transport the information recording medium is eliminated by adopting the on-line transmission system and the on-line image transmission method in the related art described above, there is a problem in that data cannot be obtained and recorded through a photographing operation or the like while communication is in progress at a low transmission speed. In particular, the length of time required to transmit image data the volume of which is much larger than that of standard text data or the like tends to be very significant. Furthermore, when image data of a group picture of a number of people taken with an electronic camera are directly transmitted by the electronic camera to portable telephones or the like of the plurality of subjects, the image data transmission takes a great deal of time. 
     SUMMARY 
     The present invention provides, preferably, an electronic apparatus that has a user identification function for performing identification of the user of the electronic apparatus through a wireless method so as to speed up the user identification without placing an onus on the user and for effectively preventing an erroneous identification that would identify a party other than the user when executing the user identification through the wireless method and a user identification method that may be adopted in the electronic apparatus. 
     The present invention also provides, preferably, an electronic apparatus identification method in which identification of an electronic apparatus to be utilized by a user is executed through a wireless method so as to speed up the identification without placing an onus on the user, and an erroneous identification that would identify another electronic apparatus different from the intended electronic apparatus as the electronic apparatus to be utilized is effectively prevented when electronic apparatus identification is executed through the wireless method. 
     The present invention further provides, preferably, an electronic apparatus that has a user identification function that allows beginners/unexperienced users, elderly persons and children as well as experienced users to operate the same electronic apparatus with ease, without requiring any special data input or registration setting to enable the electronic apparatus to execute a user identification. 
     The present invention further provides, preferably, an electronic camera, an image display apparatus and an image display method that enable an easy and prompt review of information related to a subject photographed in an image, which interests the user reviewing a reproduced display of electronic image data in linkage with the reproduced display of the electronic image data. 
     The present invention also provides, preferably, an image transmission system and an image transmission method that allow images to be transmitted to an image recipient side in a short time without placing an onus on the image sender side during an image transmission. More specifically, it provides an image transmission system and an image transmission method that allow image data obtained through a photographing operation executed in an electronic camera to be promptly transmitted to a partner-side electronic instrument without placing a great onus on the electronic camera. Furthermore, the present invention provides an image transmission system and an image transmission method that enable distribution of image data obtained through a photographing operation executed in an electronic camera to portable terminals carried by a plurality of parties who are subjects without placing a great onus on the electronic camera. 
     In the electronic apparatus having a user identification function and the identification method according to the present invention, the electronic apparatus automatically identifies the user of the electronic apparatus through wireless communication executed between the electronic apparatus and an electronic instrument having stored therein user personal information. In addition, if the electronic apparatus identifies a plurality of possible users, the electronic apparatus automatically selects the correct user based upon specific user identification processing. 
     In the electronic apparatus identification method according to the present invention, an electronic instrument carried by a user automatically identifies an utilization-object, or target, electronic apparatus through wireless communication executed between the electronic apparatus and the electronic instrument. In addition, if the electronic instrument identifies a plurality of possible utilization-object electronic apparatuses, the electronic instrument automatically selects the correct electronic apparatus based upon specific identification processing. 
     In the electronic apparatus having a user identification function and the identification method adopted in the electronic apparatus according to the present invention, the electronic apparatus engages in wireless communication with an electronic instrument having stored therein personal information that is available for general purposes and in the electronic apparatus, to have the personal information transferred to the electronic apparatus. The user is categorized based upon the personal information available for general purposes and various operational settings are automatically selected for the electronic apparatus based upon the categorization results. 
     In the electronic camera, the image display apparatus and the image display method according to the present invention, information related to a subject, which is made to correlate to the position of the subject in the image plane is appended to the electronic image data and stored in memory and the information related to the subject is displayed in correspondence to the subject position within the image plane in a reproduced display of the electronic image data. 
     In the information transmission system (or image transmission system) and the information transmission method (or image transmission method) according to the present invention, an image generating apparatus (a photographing apparatus, or an electronic camera) has a function which allows it to be connected to the Internet, information (or an image) that has been generated and appended with identification data (or a file name), is first transmitted to a specific information server (or image server) on the Internet where it is temporarily saved (or uploaded), a direct connection is established with an electronic instrument which is the recipient of the information (image) through a short-distance communication, information indicating the address of the Information server (or image server) on the Internet and the identification data corresponding to the generated information (image) are transmitted to the electronic instrument and the electronic instrument utilizes the information (image) by reading it out (or downloading) from the Information server (or image server) on the Internet based upon the address information and the identification data having been received. 
     In the information transmission system (or image transmission system) and the information transmission method (or image transmission method) according to the present invention, an image generating apparatus (a photographing apparatus, or an electronic camera) achieves a direct connection with an electronic instrument which is the recipient of information (or image) through short-distance communication, receives information indicating the address of the electronic instrument on the Internet from the electronic instrument on the partner side and transmits (or uploads), on a temporary basis, the address information of the electronic instrument together with the information (or image) which has been generated to a specific information server (or image server) on the Internet, and the information server (or image server), in turn, automatically transmits the information (or image) which has been received to the electronic instrument corresponding to the received address information. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  a conceptual diagram of the system configuration adopted in a first embodiment of the present invention; 
         FIG. 2  is an external view (a front view) of the electronic camera achieved in the first embodiment of the present invention; 
         FIG. 3  is an external view (a rear view) of the electronic camera achieved in the first embodiment of the present invention; 
         FIG. 4  is a block diagram of the electrical structure adopted in the electronic camera in the first embodiment; 
         FIG. 5  shows the structure of the user registration information; 
         FIG. 6  shows the structure of the personal information data; 
         FIG. 7  is a transition diagram of the state assumed in the electronic camera according to the present invention; 
         FIG. 8  presents a correspondence list relevant to the user identification operation; 
         FIG. 9  presents a flowchart of the main routine executed at the CPU; 
         FIG. 10  presents a flowchart of a subroutine; 
         FIG. 11  presents a flowchart of a subroutine; 
         FIG. 12  presents a flowchart of a subroutine; 
         FIG. 13  presents an example of screen display; 
         FIG. 14  presents a flowchart of a subroutine; 
         FIG. 15  presents a flowchart of a subroutine; 
         FIG. 16  presents an example of screen display; 
         FIG. 17  presents a flowchart of a subroutine; 
         FIG. 18  presents a flowchart of a subroutine; 
         FIG. 19  presents an example of screen display; 
         FIG. 20  presents a flowchart of a subroutine; 
         FIG. 21  presents a flowchart of a subroutine; 
         FIG. 22  presents an example of screen display; 
         FIG. 23  presents an example of screen display; 
         FIG. 24  presents an example of screen display; 
         FIG. 25  presents an example of screen display; 
         FIG. 26  presents a flowchart of a subroutine; 
         FIG. 27  presents an example of screen display; 
         FIG. 28  presents an example of screen display; 
         FIG. 29  presents an example of screen display; 
         FIG. 30  presents an example of screen display; 
         FIG. 31  presents a flowchart of a subroutine; 
         FIG. 32  presents a flowchart of a subroutine; 
         FIG. 33  presents a flowchart of a subroutine; 
         FIG. 34  presents a flowchart of a subroutine; 
         FIG. 35  illustrates the structure of the wireless circuit; 
         FIG. 36  illustrates the communication directivity; 
         FIG. 37  illustrate the positional detection; 
         FIG. 38  presents a flowchart of a subroutine; 
         FIG. 39  presents a flowchart of a subroutine; 
         FIG. 40  presents an example of screen display; 
         FIG. 41  presents a flowchart of a subroutine; 
         FIG. 42  presents a flowchart of a subroutine; 
         FIG. 43  presents a flowchart of a subroutine; 
         FIG. 44  presents an example of screen display; 
         FIG. 45  illustrates the diopter adjustment; 
         FIG. 46  presents a flowchart of a subroutine; 
         FIG. 47  illustrates communication achieved through a user internal path; 
         FIG. 48  presents a flowchart of a subroutine; 
         FIG. 49  is a conceptual diagram of an example of a variation of the system configuration; 
         FIG. 50  shows an example of a variation of the communication sequence; 
         FIG. 51  illustrates a communication mode; 
         FIG. 52  presents an external view of a portable telephone; 
         FIG. 53  presents an example of screen display; 
         FIG. 54  presents an example of screen display; 
         FIG. 55  presents an example of screen display; 
         FIG. 56  illustrates the concept adopted in a second embodiment of the present invention; 
         FIG. 57  illustrates the system configuration adopted in the second embodiment of the present invention; 
         FIG. 58  is an external view (a front view) of the electronic camera achieved in the second embodiment of the present invention; 
         FIG. 59  is an external view (a rear view) of the electronic camera achieved in the second embodiment of the present invention; 
         FIG. 60  is a block diagram of the electrical structure adopted in the electronic camera in the second embodiment; 
         FIG. 61  shows the structure of the data in the memory; 
         FIG. 62  shows the structure of the photograph information data; 
         FIG. 63  shows the structure of the general information data; 
         FIG. 64  shows the structure of the personal information data; 
         FIG. 65  is a transition diagram of the state assumed in an electronic camera according to the present invention; 
         FIG. 66  presents a flowchart of the main program; 
         FIG. 67  presents a flowchart of a subroutine; 
         FIG. 68  presents an example of screen display; 
         FIG. 69  presents a flowchart of a subroutine; 
         FIG. 70  presents a flowchart of a subroutine; 
         FIG. 71  illustrates the communication sequence; 
         FIG. 72  illustrates the position information detection; 
         FIG. 73  illustrates the position information detection; 
         FIG. 74  illustrates the position information detection; 
         FIG. 75  presents a flowchart of a subroutine; 
         FIG. 76  presents a flowchart of a subroutine; 
         FIG. 77  presents an example of screen display; 
         FIG. 78  presents a flowchart of a subroutine; 
         FIG. 79  presents an example of screen display; 
         FIG. 80  presents a flowchart of a subroutine; 
         FIG. 81  presents an example of screen display; 
         FIG. 82  presents an example of screen display; 
         FIG. 83  presents an example of screen display; 
         FIG. 84  presents an example of screen display; 
         FIG. 85  presents an example of screen display; 
         FIG. 86  illustrates the structure of the wireless circuit; 
         FIG. 87  illustrates the communication directivity; 
         FIG. 88  presents an external view of a portable telephone; 
         FIG. 89  presents an example of screen display; 
         FIG. 90  illustrates the image-plane position information detection; 
         FIG. 91  illustrates the communication directivity; 
         FIG. 92  presents a flowchart of a subroutine; 
         FIG. 93  presents an example of screen display; 
         FIG. 94  presents an example of screen display; 
         FIG. 95  illustrates how a subject is specified; 
         FIG. 96  presents a flowchart of a subroutine; 
         FIG. 97  illustrates an example of a variation of the system configuration; 
         FIG. 98  illustrates the concept adopted in a third embodiment of the present invention; 
         FIG. 99  illustrates the system configuration adopted in the third embodiment of the present invention; 
         FIG. 100  is an external view (front view) of the electronic camera achieved in the third embodiment of the present invention; 
         FIG. 101  is an external view (rear view) of the electronic camera achieved in the third embodiment of the present invention; 
         FIG. 102  presents an external view (front view) of a portable telephone terminal; 
         FIG. 103  is a block diagram of the electrical structure adopted in the electronic camera; 
         FIG. 104  is a block diagram of the electrical structure adopted at the portable telephone terminal; 
         FIG. 105  presents a list of upload dial numbers and the corresponding image servers; 
         FIG. 106  shows the structure of the data in the memory card; 
         FIG. 107  shows the structure of the photograph information data; 
         FIG. 108  presents a transition diagram of the operating state of the electronic camera; 
         FIG. 109  presents a flowchart of the main program; 
         FIG. 110  presents a flowchart of a subroutine; 
         FIG. 111  presents an example of screen display; 
         FIG. 112  presents a flowchart of a subroutine; 
         FIG. 113  illustrates the communication sequence; 
         FIG. 114  presents a flowchart of a subroutine; 
         FIG. 115  presents a flowchart of a subroutine; 
         FIG. 116  presents an example of screen display; 
         FIG. 117  presents a flowchart of a subroutine; 
         FIG. 118  presents an example of screen display; 
         FIG. 119  illustrates the communication sequence; 
         FIG. 120  presents a flowchart of a subroutine; 
         FIG. 121  presents an example of screen display; 
         FIG. 122  illustrates the communication sequence; 
         FIG. 123  illustrates the concept adopted in an embodiment of the present invention; 
         FIG. 124  presents a flowchart of a subroutine; 
         FIG. 125  presents an example of screen display; 
         FIG. 126  illustrates the structure of the wireless circuit; 
         FIG. 127  illustrates the communication directivity; and 
         FIG. 128  illustrates the concept adopted in an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     First Embodiment 
     The first embodiment of the present invention is explained in reference to the drawings.  FIG. 1  is a conceptual diagram of an electronic camera adopting the present invention and an electronic image communication system achieved by utilizing the electronic camera. In  FIG. 1 , an electronic camera  100  that includes a memory card saves electronic image data or digital image data (hereafter referred to as image data) obtained through a photographing operation into the memory card. In addition, the electronic camera  100  has a short-distance wireless communication function (e.g., Bluetooth (registered trademark; RTM) enabling communication within a range of approximately a 10M) and engages in communication with a portable telephone  160  that also has a short-distance wireless communication function. It is assumed that this portable telephone  160  is carried by a user of the electronic camera  100  and that a UIM card (user identification module card)  170  having stored therein user personal information (or user information) can be loaded at the portable telephone  160 . 
     Through communication between the electronic camera  100  and the portable telephone  160  carried by the user, the user personal information is transferred to the electronic camera  100  and the electronic camera  100 , in turn, sets itself up for the specific user in conformance to the transferred personal information. In addition, image data obtained through a photographing operation at the electronic camera  100  are transferred to the portable telephone  160  from the electronic camera  100 , and then the image data are transferred to a personal computer  140  for personal use or an image server  150 , first via a wireless base station  120  through a wireless portable telephone line  120  and then via a wired or wireless public telephone line or the Internet  130 . 
       FIGS. 2 and 3  present external views (a front view and a rear view) of an embodiment of the electronic camera  100  in  FIG. 1 . As shown in  FIG. 2 , at the front of the electronic camera  100 , a photographic lens  10  which forms a subject image, a viewfinder  11  used to check the photographic image plane, a strobe  12  used to illuminate the subject during a photographing operation, a photometering circuit  13  that detects the brightness of the subject and a grip portion  14  that projects out from the camera main body to allow the electronic camera  100  to be held by hand are provided, whereas a shutter release button  16  operated to issue an instruction for a photographing start and a power switch  17  (a momentary switch which is alternately set to ON or OFF each time it is operated) through which the on/off state of the power to the electronic camera  100  is controlled are provided at the upper surface. 
     As shown in  FIG. 3 , at the rear of the electronic camera  100 , an eyepiece unit of the viewfinder  11 , a MODE dial  19  that can be rotated to select a user-identify mode (a registration mode selected for user registration, an automatic mode selected for automatic user identification or a fixed mode selected for the user), a dot  20  used to indicate the setting position of the MODE dial  19 , a left LCD (left screen)  21  having a substantially quadrangular screen for displaying text and images and a right LCD (right screen)  22  having a substantially quadrangular screen for displaying text and images are provided. In the vicinity of the left screen  21  on its left side, an up button  23  and a down button  24  operated to switch the image displayed at the left screen  21  are provided, whereas under the right screen  22  and the left screen  21 , a SET button  25  operated to set various operations of the electronic camera  100 , a SEND button  26  operated to issue an instruction for an image data transmission to the outside, a CONFIRM button  27  used to finalize user selections and setting items and an INITIALIZE button  29  operated to initialize the various operational settings in the electronic camera  100  are provided. Above the left screen  21 , a PHOTOGRAPH/DISPLAY button  28  operated to select a reproduction mode in which image data saved in a memory card  104  are displayed at the left screen  21  or a photographing mode in which image data are obtained through photographing (the photographing mode or the reproduction mode is alternately selected each time the button is operated) is provided. At a side surface, a memory card slot  30  in which the memory card  104  can be loaded is provided. 
     It is to be noted that the shutter release button  16 , the MODE dial  19 , the up button  23 , the left LCD  24 , the SET button  25 , the SEND button  26 , the CONFIRM button  27 , the PHOTOGRAPH/DISPLAY button  28  and the INITIALIZE button  29  are all operating keys operated by the user. 
     It is also to be noted about over the surfaces of the left screen  21  and the right screen  22 , so-called touch tablets  66  having a function of outputting position data corresponding to a position indicated through a finger contact operation are provided, and they can be used to make a selection from selection items displayed on the screens or to select specific image data. The touch tablets  66  are each constituted of a transparent material such as a glass resin so that the user can observe images and text formed inside the touch tablets  66  through the touch tablets  66 . 
     In the block diagram in  FIG. 4 , which presents an example of an internal electrical structure that may be assumed in the electronic camera  100  shown in  FIGS. 2 and 3 , various components are connected with one another via a data/control bus  51  through which various types of information data and control data are transmitted. 
     The components are divided into the following five primary blocks, i.e., 1) a block, the core of which is a photographing control circuit  60  that executes an image data photographing operation, 2) a block, the core of which is constituted by a wireless transmission circuit  71  and a wireless reception circuit  72  that execute transmission/reception of image data to and from the outside, 3) a block constituted of the memory card  104  in which image data are stored and saved, 4) a block, the core of which is a screen control circuit  92  that executes display of image data and information related to the image data and 5) a block, the core of which is constituted of user interfaces such as operating keys  65  and a CPU  50  that implements integrated control on various control circuits. 
     The CPU  50  (central processing unit), which is a means for implementing overall control on the electronic camera  100 , issues various instructions for the photographing control circuit  60 , the wireless transmission circuit  710 , the wireless reception circuit  720 , the screen control circuit  92  and a power control circuit  64  in conformance to information input from the operating keys  65 , the touch tablets  66 , various detection circuits  70 , the power switch  17 , a timer  74 , the photometering circuit  13 , a GPS circuit  61  and an attitude change detection circuit  62 . It is to be noted that the various detection circuits  70  include a grip sensor to be detailed later and the like. 
     The photometering circuit  13  measures the brightness of the subject and outputs photometric data indicating the results of the measurement to the CPU  50 . In conformance to the photometric data, the CPU  50  sets the length of the exposure time and the sensitivity of a CCD  55  through a CCD drive circuit  56 , and in addition, it controls the aperture value for an aperture  53  with an aperture control circuit  54  via the photographing control circuit  60  in conformance to the data indicating the settings. In the photographing mode, the CPU  50  controls the photographing operation via the photographing control circuit  60  in response to an operation of the shutter release button  15 . In addition, if the photometric data indicate a low subject brightness, the CPU  50  engages the strobe  12  in a light emission operation via a strobe drive circuit  73  during the photographing operation. 
     The GPS circuit  61  (global positioning system circuit) detects information indicating the position of the electronic camera  100  by using information provided by a plurality of satellites orbiting around the earth and provides the detected position information to the CPU  50 . When an image is photographed, the CPU  50  transfers this position information or processed position information (the name of the site, the geographic location or the like) together with the image data to the memory card  104  for storage. 
     The attitude-change detection circuit  62 , which is constituted of an attitude sensor of the known art or the like, capable of detecting a change in the attitude of the electronic camera  100 , provides information indicating the extent of the attitude change having occurred between the immediately preceding photographing operation and the current photographing operation to the CPU  50 . Based upon the attitude change information, a decision can be made with regard to whether or not the photographic composition has been changed for the current photographing operation from that for the immediately preceding photographing operation. The CPU  50  transfers this attitude change information together with the image data to the memory card  104  for storage. 
     The timer  74 , having an internal clock circuit provides time information corresponding to the current time point to the CPU  50 . The CPU  50  transfers the time point information indicating a photographing operation time point together with the image data to the memory card  104  for storage. The CPU  50  controls the various units in conformance to a control program stored in a ROM  67  (read-only memory). In an EEPROM  68  (electrically erasable/programmable ROM) which is a nonvolatile memory, personal information, registration setting information and the like necessary for the operations of the electronic camera  100  are stored. The CPU  50  implements control on a power supply  63  via the power control circuit  64  by detecting the operating state of the power switch  17 . 
     The photographing control circuit  60  focuses or zooms the photographic lens  10  through a lens drive circuit  52 , controls the exposure quantity at the CCD  55  through control implemented on the aperture  53  by engaging the aperture control circuit  54  and controls the operation of the CCD  55  through the CCD drive circuit  56 . The photographic lens  10  forms a subject image onto the CCD  55  with a light flux from the subject via the aperture  53  which adjusts the light quantity. This subject image is captured by the CCD  55 . The CCD  55  (charge-coupled device) having a plurality of pixels is a charge storage type image sensor that captures a subject image, and outputs electrical image signals corresponding to the intensity of the subject image formed on the CCD  55  to an analog processing unit  57  in response to a drive pulse supplied by the CCD drive circuit  56 . 
     The analog processing unit  57  samples the image signals having undergone photoelectric conversion at the CCD  56  with predetermined timing and amplifiers the sampled signals to a predetermined level. An A/D conversion circuit  58  (analog digital conversion circuit) converts the image signals sampled at the analog processing unit  57  to digital data through digitization and the digital data are temporarily stored into a photographic buffer memory  59 . 
     In the photographing mode, the photographing control circuit  60  repeatedly executes the operation described above and the screen control circuit  92  repeatedly executes an operation in which the digital data sequentially stored into the photographic buffer memory  59  are readout via the data/control bus  51 , the digital data thus read out are temporarily stored into a frame memory  69 , the digital data are converted to display image data and are restored into the frame memory  69  and the display image data are displayed at the left screen  21 . In addition, the screen control circuit  92  obtains text display information from the CPU  50  as necessary, converts it to display text data which are then stored into the frame memory  69  and displays the display text data at the left screen  21  and the right screen  22 . Since the image currently captured by the CCD  55  is displayed at the left screen  21  in real time in the photographing mode in this manner, the user is able to set the composition for the photographing operation by using this through screen (through image) as a monitor screen. 
     The photographing control circuit  60  detects the state of the focal adjustment at the photographic lens  10  by analyzing the degree of the high-frequency component of the digital data stored in the photographic buffer memory  59  and performs a focal adjustment for the photographic lens  10  with the lens drive circuit  52  based upon the results of the detection. Upon receiving a photographing instruction from the CPU  50 , the photographing control circuit  60  engages the CCD  55  to capture a subject image via the CCD drive circuit  56  and temporarily stores image signals generated through the image-capturing operation as digital data (raw data) into the photographic buffer memory  59  via the analog processing unit  57  and the A/D converter circuit  58 . The photographing control circuit  60  then generates image data by converting or compressing the digital data stored in the photographic buffer memory  59  on a temporary basis to a predetermined recording format (such as JPEG) and stores the image data back into the photographic buffer memory  59 . The photographing control circuit  60  stores the image data stored back into the photographic buffer memory  59  into the memory card  104  as an image file. 
     In the reproduction mode, the screen control circuit  92  reads out an image file specified by the CPU  50  from the memory card  104 , temporarily stores the image file into the frame memory  69 , converts the image data to display image data and stores the display image data back into the frame memory  69  and then displays the display image data at the left screen  21 . 
     In the reproduction mode, upon receiving a transmission instruction from the CPU  50 , the wireless transmission circuit  71  reads out a specified image file from the memory card  104  and outputs this image file to the outside through wireless transmission. The wireless transmission circuit  71  and the wireless reception circuit  72  engage in communication with an external wireless instrument during a user identification operation and provides the results of the communication to the CPU  50 . 
       FIGS. 5 and 6  show the data structure of user registration information saved within the EEPROM  68 . As shown in  FIG. 5 , the user registration information is prepared for individual users (user A, user B, default user and most recent user in  FIG. 5 ). The default user is a general-purpose user having set for use in case a user identification could not be performed successfully, and the most recent user is the user who last operated the electronic camera  100 . Each set of individual user information includes identification data (individual identification data used to identify the instrument at the communication partner), personal information data (see  FIG. 6 ), camera data and priority order data. The camera data are constituted of camera information, communication information, custom setting data, last operating time point data and last setting data. 
     As shown in  FIG. 6 , the personal information data are general personal-information data having no relevance to the settings at the electronic camera  100 , which can be utilized for multiple purposes. For this reason, it is not necessary to specially set these personal information data in order to operate the electronic camera  100 . The personal information data include the name, the date of birth and the preferred language of the individual, physical data (visual acuity, diopter(eyesight) and hand preference), tastes (favorite color, etc.) and other data, and the electronic camera  100  can be customized by using the personal information data. 
       FIG. 7  is a transition diagram of the state assumed in the electronic camera in the embodiment of the present invention. As the power is turned on, wireless user identification processing is executed. During the user identification processing, a communication operation and a camera setting operation are performed. Once the user identification processing at power ON is completed, the operation shifts to the photographing mode in which a photographing operation and a camera setting operation are performed. In response to an operation of the PHOTOGRAPH/DISPLAY button  28 , the operation shifts from the photographing mode to the reproduction mode or from the reproduction mode to the photographing mode. In the reproduction mode, an image data reproducing operation, a camera setting operation and an image data transmission operation are performed. If the MODE dial  19  is set for registration, the operation shifts to user registration processing from the photographing mode or the reproduction mode, a communication operation and a registration operation for user registration are performed, and then when these operations are completed, the operation shifts back into the original mode, i.e., the photographing mode or the reproduction mode. 
     The table in  FIG. 8  provided to facilitate an explanation of the user identification processing operation indicates that the default user is set as the current user if the number of users detected through the wireless communication operation is 0, the detected user is set as the current user if the number of detected users is one, and the user selected through automatic selection processing which is to be detailed later is set as the current user if the number of detected users is two or more. 
       FIG. 9  presents a chart of the main flow of the operations executed in the electronic camera  100  (the CPU  50 ) in the embodiment described above. First, the power is turned on as the power switch  17  is operated in S 10 , and a user identification processing subroutine to be detailed later is executed in S 20  to identify the current user of the electronic camera  100 . When the user identification processing in S 20  is completed, a photographing mode subroutine is executed in S 30  and thus the camera enters a photographing-enabled state. If the shutter release button  16  is operated in the photographing mode, a release interrupt processing subroutine in S 40  is executed to perform a photographing operation. If the PHOTOGRAPH/DISPLAY button  28  is operated in the photographing mode, a photographing/reproduction interrupt processing subroutine in S 70  is executed and a reproduction mode subroutine in S 80  is executed to display the reproduced image of image data stored in the memory card  104  at the left screen  21 . If, on the other hand, the PHOTOGRAPH/DISPLAY button  28  is operated in the reproduction mode, the photographing/reproduction interrupt processing subroutine in S 70  is executed and the photographing mode subroutine in S 30  is executed. 
     If the SEND button  26  is operated in the reproduction mode, a transmission interrupt processing subroutine in S 90  is executed to transmit the image data currently reproduced in the reproduction mode to the outside. In addition, if the SET button  25  is operated either in the photographing mode or the reproduction mode, a setting interrupt processing in S 60  is executed to enable manual setting of the camera, if the INITIALIZE  29  is operated either in the photographing mode or the reproduction mode, initialize interrupt processing in S 95  is executed to initialize the camera settings in correspondence to the specific user and if the MODE dial  19  is set for registration in the photographing mode or the reproduction mode, a registration interrupt processing in S 50  is executed to enable a new user registration. 
     In the detailed flowchart of the user identification processing subroutine presented in  FIG. 10 , the last user is set as the most recent user in S 201  after the subroutine is started up in S 20 . In S 202 , the MODE dial  19  is checked to ascertain whether or not it is set to “auto”, the most recent user is set as the current user if the MODE dial  19  is not set to “auto” and, accordingly, the most recent user settings are selected for the camera before the operation proceeds to S 210 . Namely, if the MODE dial  19  is set to “fixed”, the last user who operated the camera is set as the current user and the camera settings are selected accordingly without executing a user identification. If, on the other hand, it is ascertained in S 202  that the MODE dial  19  is set to “auto”, the operation proceeds to step S 204  to attempt communication with the outside for user detection by engaging the wireless transmission circuit  71  and the wireless reception circuit  72 . At this time, the user detection is performed over the maximum wireless communication range by setting the output signal level G of the wireless transmission circuit  71  to the maximum (Gmax). 
     In S 205 , a verification as to whether or not the number of registered users among the detected users is 0 is accomplished, and if the number of registered users is 0, the default setting is selected for the user, the camera settings for the default user are selected and the most recent user is updated as the default user in S 206  before the operation proceeds to S 210 . If, on the other hand, it is ascertained in S 205  that the number of registered users is not 0, a verification is achieved in S 207  as to whether or not the number of registered users among the detected users is 1, and if the number of registered users is 1, the detected registered user is set as the current user, the camera settings for the detected registered user are selected and the most recent user is updated as the detected registered user in S 208  before the operation proceeds to S 209 . 
     If it is ascertained in S 207  that the number of registered users among the detected users is not 1, i.e., if number of registered users among the detected users is at least 2, a single registered user is selected through an automatic user selection subroutine executed in S 25  which is to be detailed later, and then the operation proceeds to S 209 . In S 209 , the individual user information of the registered user having determined to be the current user is read and stored into the EEPROM  68  by communicating with the selected registered user again. 
     In step S 210 , a verification as to whether or not the most recent user whose individual user information is stored in the EEPROM  68  matches the last user is achieved, and if they match, the operation makes a direct return in S 211 . If, on the other hand, they do not match, an automatic setting subroutine in S 22  which is to be detailed later is executed to initialize the camera settings before the operation makes a return in S 211 . 
     In the detailed flowchart of the automatic user selection subroutine presented in  FIG. 11 , after the subroutine is started up in S 25 , the output signal level G of the wireless transmission circuit  71  is first initialized to the minimum (Gmin) in S 251  to reduce the wireless communication range to the minimum, and then a wireless communication is attempted at the output signal level setting G to communicate with a registered user in S 252 . A verification is achieved in S 253  as to whether or not communication with the registered user has been achieved, and if no communication has been achieved, the output signal level G of the wireless transmission circuit  71  is increased by AG in S 254 . In S 255 , a verification is achieved as to whether or not the output signal level G of the wireless transmission circuit  71  exceeds the maximum (Gmax), and if the output signal level G does not exceed the maximum level, the operation returns to S 252  to attempt communication with a registered user by slightly increasing the output signal level. 
     If it is confirmed in S 253  that communication with a registered user has been achieved, a verification is achieved in S 257  as to whether or not communication with a plurality of registered users has been achieved at the output signal level setting, and if communication has not been achieved with a plurality of registered users, the registered user with whom communication has been achieved is accepted as the current user, the camera settings for the registered user with whom communication has been achieved are selected and the most recent user is updated as the registered user with whom communication has been achieved in S 258  before the operation makes a return in S 261 . 
     If, on the other hand, it is verified in S 257  that communication with a plurality of registered users has been achieved at the output signal level setting, the registered user ranked highest in the priority order among the registered users with whom communication has been achieved is selected as the current user in S 259 , and the registered user thus selected is set as the current user, the camera settings for the selected registered user are selected and the most recent user is updated as the selected registered user in S 260  before the operation makes a return in S 261 . 
     If it is decided in S 255  that the output signal level G of the wireless transmission circuit  71  exceeds the maximum (Gmax), the default user is set as the current user, the camera settings for the default user are selected and the most recent user is updated as the default user in S 256  before the operation makes a return in S 261 . 
     As described above, since the registered users are searched while gradually increasing the wireless communication range in the user automatic selection subroutine shown in  FIG. 11 , the registered user present within the shortest distance from the camera (likely to be the current user of the camera) can be automatically selected and even if communication is achieved simultaneously with a plurality of registered users, the user most likely to be operating the camera can be selected in conformance to the predetermined priority order. 
     In the detailed flowchart of the automatic setting processing subroutine presented in  FIG. 12 , after the subroutine is started up in S 22 , the last user and the most recent user are displayed at the left screen  21  and a message indicating that the last user and the most recent user do not match is displayed at the right screen  22  in S 221 . Next, the initialize interrupt processing subroutine in S 95  is executed before the operation makes a return in S 222 . 
     In the detailed flowchart of the initialize interrupt processing subroutine presented in  FIG. 14 , after the subroutine is started up in S 95 , the camera settings are initialized to the custom settings corresponding to the most recent user in S 951  and then the operation makes a return in S 952 . 
     In the detailed flowchart of the photographing mode subroutine presented in  FIG. 15 , after the subroutine is started up in S 30 , the processing in S 301  is repeatedly executed. In S 301 , image data sequentially generated by the CCD  55  under the camera setting condition selected by the user or in the initialized camera setting condition are displayed at the left screen  21  and the corresponding camera setting condition and the user name are displayed in text at the right screen  22 , as shown in  FIG. 16 . 
     In the detailed flowchart of the release interrupt processing subroutine presented in  FIG. 17 , after the subroutine is started up in S 40 , a verification is achieved in S 401  as to whether or not the camera is currently set in the photographing mode, and if it is decided that the camera is not set in the photographing mode, the operation makes a return in S 403 . If, on the other hand, the camera is set in the photographing mode, an image-capturing operation is executed in the camera setting condition corresponding to the user and image data obtained through the image-capturing operation are stored into the memory card  104  in S 402 . In addition, the image data are displayed at the screen over a predetermined length of time before the operation makes a return in S 403 . 
     In the detailed flowchart of the reproduction mode subroutine presented in  FIG. 18 , after the subroutine is started up in S 80 , the processing in S 801  is repeatedly executed. In S 801 , specific image data stored in the memory card  104  are selected and read out in response to an operation of the direction buttons  23  and  24  and the image data are reproduced and displayed at the left screen  21  and the operating instructions and the user name are displayed at the right screen  22 , as shown in  FIG. 19 . 
     In the detailed flowchart of the transmission interrupt processing subroutine presented in  FIG. 20 , after the subroutine is started up in S 90 , a verification is achieved in S 901  as to whether or not the camera is currently set in the reproduction mode and the operation makes a return in S 903  if the camera is not set in the reproduction mode. If, on the other hand, the camera is currently set in the reproduction mode, the image data the reproduced image of which is currently displayed at the left screen  21  are read out from the memory card  104  and the image data are wirelessly transmitted to the recipient corresponding to the user through the wireless transmission circuit  71  in S 902 , and then the operation makes a return in S 903 . 
     In the detailed flowchart of the registration interrupt processing subroutine presented in  FIG. 21 , after the subroutine is started up in S 50 , two selection items, i.e., “new user registration” and “registered user selection” are displayed is at the left screen  21 , as shown in  FIG. 22 , to allow the user to select one of the selection items in S 501 . If the user selects “new user registration”, a communication for user detection is attempted through the wireless transmission circuit  71  and the wireless reception circuit  72  by setting the output signal level G to the maximum (Gmax) in S 502 . In S 503 , the names of the detected users and their identification data are displayed at the left screen  21  as shown in  FIG. 23  to enable a selection of the user to be registered. In S 504 , the registered users are displayed in conformance to the priority order at the left screen  21 , as shown in  FIG. 24 , to enable selection of a priority order rank for the user to be newly registered. 
     In S 505 , data indicating the selected user and his priority order rank and data related to the selected user (the identification data and the personal information data) are registered and saved at the EEPROM  68 . In S 60 , the setting interrupt processing subroutine is executed to select the camera settings and the like for the newly registered user, and then in S 506 , data indicating the selected settings and the like are registered and saved at the EEPROM  68  as the camera data of the newly registered user and also the setting data are sent back through the wireless transmission circuit  71  to be saved into an instrument such as a portable telephone carried by the user before the operation proceeds to S 509 . 
     If, on the other hand, “registered user selection” is selected in S 501 , the names of the registered users are displayed at the left screen  21  as shown in  FIG. 25  to enable a selection of the desired registered user in S 507 , and then the current user is switched to the selected registered user, the camera settings are switched to those for the selected registered user and the most recent user is updated as the selected registered user in S 508  before the operation proceeds to S 509 . In S 509 , the MODE dial  19  is repeatedly checked to verify whether or not a setting other than the registration mode has been selected through the MODE dial  19 , and if a setting other than the registration mode has been selected, the operation makes a return in S 510 . 
     In the detailed flowchart of the setting interrupt processing subroutine presented in  FIG. 26 , after the subroutine is started up in S 60 , exposure-mode selection items are displayed at the left screen  21  as shown in  FIG. 27  in S 601  to enable a user selection. In S 602 , AF mode (automatic focal adjustment mode) selection items are displayed at the left screen  21 , as shown in  FIG. 28 , to enable a user selection. In S 603 , image-data-recording-mode selection items are displayed at the left screen  21 , as shown in  FIG. 29 , to enable a user selection. In S 604 , image-data-display-mode selection items are displayed at the left screen  21 , as shown in  FIG. 30 , to enable a user selection. Then, in S 605 , the current camera settings are updated in conformance to the selected camera settings before the operation makes a return in S 606 . 
     In the detailed flowchart of the photographing/reproduction interrupt processing subroutine presented in  FIG. 31 , after the subroutine is started up in S 70 , a verification is achieved as to whether or not the camera is currently set in the reproduction mode, and if it is decided that the camera is set in the reproduction mode, the operation exits the reproduction mode in S 702  to shift to the photographing mode subroutine in S 30 . If, on the other hand, the camera is not set in the reproduction mode, the operation exits the photographing mode in S 703  to shift to the reproduction mode subroutine in S 80 . 
     In the detailed flowchart of an example of a variation of the automatic user selection subroutine presented in  FIG. 32 , after the subroutine is started up in S 25 , communication with detected registered users is executed with the output level of the wireless transmission signal set at a constant level and data indicating the reception signal output levels at the user-side instruments are obtained from the user-side instruments in S 271 . Then, in S 272 , the registered user whose data indicate the highest reception signal output level is selected. In S 273 , the selected registered user is set as the current user, the camera settings for the selected registered user are selected and the most recent user is updated as the selected registered user before the operation makes a return in S 274 . 
     As described above, in the automatic user selection subroutine shown in  FIG. 32 , signal output levels of the signal transmitted by the electronic camera and received by the users are detected on the reception side, and the data indicating the detected reception signal output levels are sent back to the camera where the registered user with the highest output level for reception signal (within the shortest distance) is selected. 
     In the detailed flowchart of another example of a variation of the automatic user selection subroutine presented in  FIG. 33 , after the subroutine started up in S 25 , the electronic camera communicates with detected registered users and obtains data indicating the output levels of signals transmitted by the user-side instruments from the user-side instruments in S 281 . In S 282 , the signals transmitted by the user-side are received and the output levels of the received signals are detected. In S 283 , the registered user with the lowest signal-attenuation rate is selected by comparing the reception-signal output levels with the transmission signal output-level data. In S 284 , the registered user thus selected is set as the current user, the camera settings for the selected registered user are selected and the most recent user is updated as the selected registered user, and then the operation makes a return in S 285 . As described above, in the user automatic selection subroutine shown in  FIG. 33 , the registered user with the lowest signal attenuation rate at the electronic camera (the registered user within the shortest distance) is selected. 
     In the detailed flowchart of yet another example of a variation of the user automatic selection subroutine presented in  FIG. 34 , after the subroutine is started up in S 25 , the registered user whose last operation of the electronic camera is recorded with the most recent time among the detected registered users is selected in S 291 . In S 292 , the registered user thus selected is set as the current user, the camera settings for the selected registered user are selected and the most recent user is updated as the selected registered user before the operation makes a return in S 285 . 
     As described above, in the user automatic selection subroutine shown in  FIG. 34 , the registered user whose last operation of the electronic camera is the most recent (most likely to be the current user) is selected from the detected registered users. By referencing the history of the use of the camera by the users in this manner, the level of the user identification capability can be improved. 
     In  FIG. 35  illustrating the structure of the wireless transmission circuit  71  and the wireless reception circuit  72  within the electronic camera, the wireless transmission circuit  71  and the wireless reception circuit  72  are enclosed by an electromagnetic shield film  79  over the camera front surface (along with the photographic optical axis), the camera lower surface, the camera upper surface and the camera left and right side surfaces. Accordingly, the wireless transmission circuit  71  and the wireless reception circuit  72  are allowed to achieve communication readily with a portable instrument  180 A carried by a user likely to be present to the rear of the camera, i.e., the photographer (user A in the figure) and are not allowed to achieve ready communication with a portable instrument  180 B carried by the subject (user B in the figure) or the like present along the photographing direction.  FIG. 36 , which shows the communication directivity of the wireless transmission circuit  71  and the wireless reception circuit  72 , indicates that the directivity on the side to the rear of the electronic camera  100  is extreme and that the directivity on the side to the front (along the optical axis  40 ) is slight. 
     By adopting the structure shown in  FIG. 35  to allow the wireless transmission circuit  71  and the wireless reception circuit  72  to assume extreme directivity on the side to the rear of the camera as described above, the likelihood of detecting the photographer as the current user is increased. It is to be noted that the directivity may be adjusted by adopting a specific antenna structure as well as by using an electromagnetic shield film. 
     In  FIG. 37  illustrating a user selection achieved based upon the positional relationships between the camera and users, camera user A and camera user B individually detect position data (x, y, z) with GPS (global positioning system) units, and the detected position data (x 1 , y 1 , z 1 ) and (x 2 , y 2 , z 2 ) of user A and user B respectively are provided to the camera which calculates the relative distances between the camera and user A and between the camera and user B based upon its own position data (x 0 , y 0 , z 0 ) and selects the user present within the shortest relative distance. For instance, the relative distance between the camera and user A can be calculated as the square root of the sum of the squares of (x 1 -x 0 ), (y 1 -y 0 ) and (z 1 -z 0 ). 
     In the detailed flowchart of an embodiment of the user automatic selection subroutine which is achieved by utilizing GPS units presented in  FIG. 38 , after the subroutine is started up in S 25 , the position data indicating the user positions are obtained by communicating with the detected registered users in S 391 . In S 392 , position data indicating the position of the camera itself are detected. In S 393 , based upon the user position data and the camera position data, the relative distances between the camera and detected registered users are calculated. In S 394 , the registered user present within the shortest relative distance is selected. In S 395 , the registered user thus selected is set as the current user, the camera settings for the selected registered user are selected and the most recent user is updated as the selected registered user before the operation makes a return in S 396 . 
     As described above, in the user automatic selection subroutine shown in  FIG. 38 , the registered user present within the shortest distance from the camera is selected based upon the positions detected with the GPS units. 
     In the detailed flowchart of a user manual selection subroutine executed to manually select the current user instead of through the user automatic selection subroutine, after the subroutine is started up in S 35 , the registered users detected as a result of a communication trial are displayed at the left screen  21 , as shown in  FIG. 40 , to enable a user selection in S 351 . In S 352 , the registered user that has been selected is set as the current user, the camera settings for the selected registered user are selected and the most recent user is updated as the selected registered user, before the operation makes a return in S 353 . As described above, in the user manual selection subroutine shown in  FIG. 39 , a registered user is manually selected from the detected users indicated as the results of communication and thus, the current user can be selected with a high degree of reliability. 
     In the detailed flowchart of a grip sensor interrupt processing subroutine presented in  FIG. 41 , through which the user identification processing can be started at power ON, as well as in response to an output from a grip sensor internally provided at the grip portion  14 , the grip-sensor-interrupt-processing subroutine in S 45  is started up as the grip sensor senses that there has been a change at the grip portion  14 , i.e., a change from a non-gripped state to a gripped state and the user identification processing subroutine in S 20  is executed accordingly before the operation makes a return in S 451 . By executing the grip sensor interrupt subroutine shown in  FIG. 41  as described above, the current user can be identified with a high degree of reliability even when a change of photographer occurs while the power is on. 
     In the detailed flowchart of a timer interrupt processing subroutine presented in  FIG. 42 , through which the user identification processing is started up by a timer interrupt, the timer interrupt processing in S 46  is started up over a predetermined time interval, a verification is achieved in S 461  as to whether or not the camera is currently set in a self timer photographing mode (a mode set with an operating member (not shown), in which an image-capturing operation is executed with a predetermined delay following a shutter release operation) or a remote control mode (a mode set with an operating member (not shown), in which the shutter is released in the camera through a remote control operation), and if the camera is set in either the self timer photographing mode or the remote control mode, the operation makes a return in S 462  without executing a user identification. If, on the other hand, the camera is not set in the self timer photographing mode or the remote control mode, the user identification processing subroutine in S 20  is executed and then the operation makes a return in S 462 . 
     As described above, the timer interrupt processing subroutine shown in  FIG. 42 , the user identification is executed over predetermined time intervals to achieve a reliable user identification even when the photographer hands the camera over to another operator while the power is on. In addition, since the user identification is not executed in an operating mode (the self timer photographing mode or the remote control mode) in which the photographer is likely to be away from the camera, the reliability of user identification is improved. 
     In the detailed flowchart of an example of a variation of the initialize-interrupt-processing subroutine presented in  FIG. 43 , the camera operation is set based upon the personal information data. After the subroutine is started up in S 95 , the default settings for the preferred language, the display character size, the preferred text style and the operating mode (preferred language=Japanese, character size=enlarged size, text style=easy, operating mode=full automatic) are selected in S 961 . In S 962 , a verification is achieved as to whether or not the most recent user is the default user, and if the most recent user is the default user, the operation makes a return in SS 70 . If, on the other hand, the most recent user is not the default user, a verification is achieved in S 963  as to whether or not the preferred language of the most recent user is Japanese, and if the preferred language is Japanese, the operation proceeds to S 965 . If, on the other hand, the preferred language of the most recent user is not Japanese, English is set for the preferred language in S 964  before the operation proceeds to S 965 . In S 965 , a verification is achieved as to whether or not the visual acuity of the most recent user is equal to or higher than 1.0 and if the visual acuity of the most recent user and is not equal to or higher than 1.0, the operation proceeds to S 967 . If the visual acuity of the most recent user is equal to or higher than 1.0, on the other hand, the character size is set to a standard size before the operation proceeds to S 967 . In S 967 , a verification is achieved as to whether or not the age of the most recent user is equal to or higher than 15 and equal to or lower than 60, and if the age of the most recent user is not equal to or higher than 15 and equal to or lower than 60, the operation makes a return in SS 70 . If, on the other hand, the age of the most recent user is equal to or higher than 15 and equal to or lower than 60, the text style is set to “standard” in S 968 , the operating mode is set to “manual” in S 969  and then the operation makes a return in SS 70 . The settings thus selected are reflected in the camera operation and the display operation executed after the return. 
     As described above, in the initialize interrupt subroutine shown and  FIG. 43 , the operating mode of the camera is adjusted to satisfy individual user needs (a user likely to be inexperienced can use the camera with ease in the full auto (fully automatic) mode, whereas an experienced user can use the camera in a more advanced application through manual setting), the character size is adjusted for an easy-to-check display (a display of larger-sized characters for a user with poor vision), the text style is adjusted to ensure that an error-free operation is performed (an easy text style, free of technical terms, and graphics are used for seniors and children) and a reliable man-machine interface is provided by adjusting the preferred language, based upon the personal information data (the age, the visual acuity and the preferred language).  FIG. 44  presents an example of a screen display brought up in the photographing mode with the preferred language set to English, the character size set to large and the text style set to easy. Simple English text (without any technical terms) is displayed by using large-size alphanumeric characters together with graphics and, in this case, the camera assumes the full auto settings (program exposure mode, one-shot AF mode, normal recording mode and color normal display mode), thereby allowing even an inexperienced photographer to perform a reliable photographing operation without having to select special settings. 
     In  FIG. 45 , presenting an example of a configuration that may be adopted to automatically adjust the viewfinder diopter in conformance to data indicating the user diopter (eyesight), a Kepler viewfinder (a real-image finder) is constituted with an objective lens  110 , an erecting prism  111  and an eyepiece lens  112  and the photographic field can be observed with an eye  113  set on a viewfinder optical axis  115 . By moving the eyepiece lens  112  along the viewfinder optical axis, the diopter can be adjusted. The eyepiece lens  112  is moved by a motor  114  which is controlled by the CPU  50 . 
       FIG. 46  presents a detailed flowchart of an automatic diopter (eyesight) adjustment performed for each user by adopting the configuration shown in  FIG. 45  through the initialize interrupt processing subroutine. After the subroutine is started up in S 95 , the diopter is set to the default value in S 971 , a verification is achieved in S 972  as to whether or not the most recent user is the default user and if the most recent user is the default user, the operation proceeds to S 975 . If, on the other hand, the most recent user is not the default user, the operation proceeds to S 973  to make a verification as to whether or not the diopter data of the most recent user are available and if the diopter data are not available, the operation proceeds to S 975 . If the diopter data are available, the diopter is set as indicated by the diopter data of the most recent user and then the operation proceeds to S 975 . In S 975 , the CPU  50  drives the motor  114  in conformance to the diopter that has been set to adjust the position of the eyepiece lens  112 , thereby completing the diopter adjustment executed in conformance to the user diopter before the operation makes a return in S 976 . It is to be noted that data indicating the extent of user fatigue may be read out by communicating with the user over predetermined time intervals to fine-adjust the diopter in conformance to the fatigue data, or the length of time over which the electronic camera  100  has been continuously used since the user started operating the electronic camera  100  may be measured to fine-adjust the diopter in conformance to the length of the continuous operation. 
     In  FIG. 47  showing the structure that may be adopted in an example of a variation of the wireless communication between the electronic camera and an instrument carried by the user, a weak electrical current (a weak electromagnetic wave) traveling through a path  202  inside the body (a hand  201 ) of the user holding the portion  14  of the electronic camera  100  is used to enable communication between the CPU  50  and a wristwatch-type instrument  200  worn by the user at which the user information is stored, through a transmission/reception circuit  75 . The surface of the grip portion  45 , an electrical contact layer that transmits/receives electrical signals through the hand placed in contact with the surface is formed. This contact layer is connected with the transmission/reception circuit  75 , so as to enable communication with the instrument  200  carried by the user via the hand holding the portion  14 . The instrument  200 , too, includes an electrical contact layer to be placed in contact with the hand  201  of the user, so that data can be received and stored data can be transmitted through the contact layer. 
     In the detailed flowchart of a user processing subroutine presented in  FIG. 48 , which is achieved by adopting the embodiment illustrated in  FIG. 47 , after the subroutine is started up in S 25 , a verification is achieved in S 551  through the grip sensor as to whether or not the portion  14  is gripped and if it is judged that the portion  14  is not gripped, the most recent user is set as the current user, the camera settings for the most recent user are selected and the most recent user setting is left unchanged in S 552  before the operation makes a return in S 557 . If, on the other hand, it is judged in S 551  that the portion  14  is gripped, a communication is attempted via the path  202  within the hand  201  in S 553 , and if it is judged in S 554  that communication has been achieved, the user with whom communication has been achieved is set as the current user, the camera settings for the user with whom communication has been achieved are selected and the most recent user is updated as the user with whom communication has been achieved in S 555  before the operation makes a return in S 557 . If, on the other hand, it is judged in S 554  that communication has not been achieved, the default user is set as the current user, the camera settings for the default user are selected and the most recent user is updated as the default user in S 556 , and then the operation makes a return in S 557 . As described above, since communication with the instrument having stored therein the user personal information is achieved through the hand holding the electronic camera  100  in the user automatic selection subroutine shown in  FIG. 48 , the operator (the user) of the electronic camera  100  can be selected with a high degree of reliability. 
       FIG. 49  is another conceptual diagram of an electronic camera adopting the present invention and an electronic image communication system achieved by utilizing this electronic camera. While the personal information data stored in the UIM card  170  loaded at the portable telephone  160  are read into the electronic camera  100  through a short-distance wireless communication between the electronic camera  100  and the portable telephone  180  carried by the user in the electronic image communication system in  FIG. 1 , personal information data stored in a wireless tag (a non-contact IC card) are automatically read from the wireless tag into the electronic camera  100  as the wireless tag enters the vicinity of the electronic camera  100  internally provided with a non-contact wireless read unit in the electronic image communication system shown in  FIG. 49 . The electronic camera  100  also has a function of engaging in wireless communication through a wireless telephone line  190  and thus is capable of transmitting image data obtained through an image-capturing operation to an external database  140  and the like. As described above, in the electronic image communication system shown in  FIG. 49 , the operations of the electronic camera  100  can be customized by the user simply by holding a compact wireless tag (a non-contact IC card) which does not require a power source. 
     In the embodiment described above (see  FIGS. 1 and 10 ), a wireless communication between the electronic apparatus and a portable instrument carried by a user is achieved simply as the user approaches the electronic apparatus, the personal information on the user is transferred to the electronic apparatus and the electronic apparatus automatically selects operational settings that are optimal for the user in conformance to the personal information. As a result, the user is able to immediately operate the electronic apparatus which has been customized for his use without having to perform a special operation. 
     In the embodiment described above (see  FIG. 1 ), in which the user identification is executed through short-distance wireless communication, the likelihood of communicating with a partner (or an opponent) that is the current user is increased. 
     In the embodiment (see  FIG. 9 ), the user identification is executed at power ON before the main operation of the electronic apparatus starts and the settings of the electronic apparatus are selected in correspondence to the identified user. Thus, a given user can always operate the electronic apparatus at the settings customized for the user. 
     Since the communication partner most likely to be the current user is automatically selected as the user if wireless communication with a plurality of partners has been achieved during the wireless user identification in the embodiment described above (see  FIG. 10 ), the confusion that might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus is prevented. 
     Since the user is selected from the pre-registered users if wireless communication with a plurality of partners has been achieved during the wireless user identification in the embodiment described above (see  FIG. 10 ), the confusion that might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus is prevented. 
     Since the predetermined default user is set as the current user if wireless communication has not been achieved with any partner during the wireless user identification in the embodiment described above (see  FIG. 10 ), even a user who is not capable of transferring his personal information data to the electronic apparatus can operate the electronic apparatus at the default settings. 
     Since the electronic apparatus can be operated at the settings corresponding to the most recent user without executing a user identification if the MODE dial  19  is set to “fixed” in the embodiment described above (see  FIG. 10 ), the confusion that might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus is prevented. 
     In the embodiment described above (see  FIG. 11 ), if wireless communication with a plurality of partners has been achieved during the wireless user identification, communication is attempted by gradually adjusting the transmission output from low to high and the first user with whom communication is achieved is selected as the current user. As a result, the partner most likely to be the current user (the partner present over the shortest distance from the electronic apparatus) can be selected and the confusion that might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus is prevented. 
     Since the user is selected in conformance to the predetermined priority order if wireless communication with a plurality of partners has been achieved during the wireless user identification in the embodiment described above (see  FIG. 11 ), a partner likely to be the current user can be selected and the confusion that might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus is prevented. 
     Since the names of the last user and the current user are displayed only if the last user does not match the current user as a result of the user identification in the embodiment described above (see  FIGS. 10, 12 and 13 ), no unnecessary display is brought up when a single user is continuously operating the electronic apparatus and, in addition, an appropriate action (registration setting) can be promptly taken manually if a user has been erroneously identified. 
     In the embodiment described above (see  FIG. 14 ), the electronic apparatus can be initialized to the custom settings set in advance for a given user through a single action, and thus, the camera can be set to the user&#39;s preferred settings promptly to correspond to a specific photographing condition. 
     Since the name of the identified user remains on display at the screen in the embodiment described above (see  FIG. 16  and the like), an appropriate action (registration setting) can be manually taken promptly even when the user has been erroneously identified. 
     When registering a new user, the names of the partners with whom wireless communication has been achieved are brought up on displayed at the screen and the user himself selects the name of the user to be newly registered in the embodiment described above (see  FIGS. 21 and 23 ) and, as a result, the user to be newly registered can be specified with a high degree of reliability. 
     Since the user automatically identified by the camera can be manually changed in the embodiment described above (see  FIGS. 21 and 25 ), an appropriate action can be promptly taken manually even when the wrong user has been identified by the camera. 
     In the embodiment described above (see  FIG. 32 ), the communication partner reporting the highest-reception-signal level among a plurality of partners with whom wireless communication has been achieved is selected as the current user during the wireless user identification and, as a result, the partner most likely to be the current user (the partner present at the shortest distance from the electronic apparatus) can be selected, thereby preventing the confusion which might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus. 
     In the embodiment described above (see  FIG. 33 ), the communication partner with the lowest transmission signal attenuation rate among a plurality of partners with whom wireless communication has been achieved is selected as the current user during the wireless user identification and, as a result, the partner most likely to be the current user (the partner present at the shortest distance from the electronic apparatus) can be selected, thereby preventing the confusion which might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus. 
     In the embodiment described above (see  FIG. 34 ), the communication partner who has operated the electronic apparatus most recently among a plurality of partners with whom wireless communication has been achieved is selected as the current user during the wireless user identification and, as a result, the partner most likely to be the current user can be selected, thereby preventing the confusion which might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus. 
     In the embodiment described above (see  FIGS. 35 and 36 ), the directivity of the wireless communication in the electronic apparatus is restricted along the direction in which the operator of the electronic apparatus is likely to be present relative to the position of the electronic apparatus main unit by using an electromagnetic shield or the like and, as a result, the likelihood of wireless communication being achieved with the true user is increased and the likelihood of wireless communication being achieved with parties other than the true user is reduced during the user identification executed through a wireless communication, thereby preventing the confusion which might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus. 
     In the embodiment described above (see  FIGS. 37 and 38 ), the communication partner who is present within the shortest distance from the electronic apparatus among a plurality of partners with whom wireless communication has been achieved is selected as the current user during the wireless user identification and, as a result, the partner most likely to be the current user can be selected, thereby preventing the confusion which might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus. 
     In the embodiment described above (see  FIGS. 39 and 40 ), if wireless communication has been achieved with a plurality of partners during the wireless user identification, the names of the partners with whom communication has been achieved are brought up on display at the screen and then the user himself is allowed to select the true user from the partners on display. As a result, the correct user can be specified with a high degree of reliability and the confusion that might otherwise result when a plurality of partners with whom wireless communication is enabled are present in the vicinity of the electronic apparatus is prevented. 
     Since the user identification is executed by detecting that the electronic apparatus is held by the user in the embodiment described above (see  FIG. 41 ), the user identification is executed only if there is a user who is bound to be operating the electronic apparatus and thus, an erroneous user identification resulting from wireless communication achieved with a non-user partner when there is no true user present in the vicinity of the electronic apparatus is prevented. 
     In the embodiment described above (see  FIG. 42 ), the user identification is executed over predetermined time intervals. As a result, a change-over of the user taking place when the power to the electronic apparatus is on can be automatically detected with a high degree of reliability and the electronic apparatus can be set for operation by the new user. 
     Since no user identification is executed through the short-distance wireless communication in an operating mode in which a true user is not likely to be in the vicinity of the electronic apparatus in the embodiment described above (see  FIG. 42 ), the risk of erroneously identifying a party other than the true user as the current user is reduced. 
     Since the operational settings and the display settings are selected for the electronic apparatus in conformance to the extent of expertise of a given user in handling the electronic apparatus which is indirectly assessed based upon the general personal information on the user (information bearing no direct relevance to the electronic apparatus) in the embodiment described above (see  FIGS. 43 and 44 ), unexperienced users (e. g. seniors and children) unaccustomed to handling electronic apparatuses can use the electronic apparatus through an easy and simple operation and, at the same time, users in the age group likely to be familiar with handling electronic apparatuses can utilize the electronic apparatus in a more advanced application through manual settings and the like. 
     Since the diopter adjustment of the viewfinder is executed based upon the information indicating the user&#39;s visual acuity in the embodiment described above (see  FIGS. 45 and 46 ), it is not necessary to manually perform a viewfinder diopter adjustment each time one of a plurality of users sharing the camera operates the camera and, as a result, a photographing operation can be started promptly without missing a good photo opportunity. 
     Since the electronic apparatus communicates with an instrument worn by the user through the hand of the user holding the electronic apparatus in the embodiment described above (see  FIGS. 47 and 48 ), the user can be identified with a high degree of reliability. Alternatively, the electronic instrument may be embedded in the body of the user. 
     Since the electronic apparatus includes a read circuit that reads a non-contact IC card (wireless tag) and thus is able to perform a non-contact read of the personal information from the non-contact IC card (wireless tag) in the embodiment described above (see  FIG. 49 ), the personal information on the user carrying a light weight and compact non-contact IC card that does not require a power supply is provided to the electronic apparatus without requiring the user to perform any special operation and thus, the electronic apparatus can be operated with the settings preferred by the user. 
     EXAMPLES OF VARIATIONS 
     The present invention is not limited to the embodiment described above and allows for a number of variations and modifications. 
     In the embodiment described above (see  FIG. 9 ), communication with the electronic instrument (a portable telephone, a wireless tag) carried by the user is attempted from the electronic apparatus (electronic camera) side for user identification. However, an operating member that executes a trial communication may be provided at the user-side electronic instrument so that the electronic apparatus near the electronic instrument responds only when the user operates the operating member to enable transmission of the user personal information to the electronic apparatus, instead. 
       FIG. 50  illustrates the sequence of a wireless communication exchange between an electronic instrument carried by the user and the electronic apparatus that the user wishes to utilize, which is initiated on the electronic instrument side. The electronic instrument is a portable telephone  160  shown in  FIG. 52  at which a UIM card or the like is loaded and thus the personal information on the user carrying the portable telephone  160  is stored and saved. The portable telephone  160  includes a display screen  161  and operating buttons  162 . As shown in  FIG. 51 , an electronic camera A, an electronic camera B, a printer A and a scanner A are present in the vicinity of the electronic instrument, and the user carrying the electronic instrument (the portable telephone  160 ) wishing to use an electronic apparatus (the electronic camera A) first operates an operating button  162  at the portable telephone  160  to set the portable telephone  160  in the communication mode, whereby various categories of electronic apparatuses that may be used are brought on display at the display screen  161 , as shown in  FIG. 53 , to allow the user to select the category of the electronic apparatus he wishes to use with a selection member (not shown).  FIG. 53  presents an example of a display in which the electronic camera is selected as the category of the electronic apparatus the user wishes to use. 
     Once the category of the electronic apparatus that the user wishes to utilize is the selected, the electronic instrument transmits electronic instrument identification information, information indicating the selected category and the user identification information to the electronic apparatuses present in the vicinity of the electronic instrument together with a utilization state information request  1 . Among the electronic apparatuses having received the utilization state information request  1  from the electronic instrument, any electronic apparatus that does not belong to the category indicated by the category information does not return any response. However, if a given electronic apparatus fits into the category indicated by the category information, the electronic apparatus verifies the current utilization state (i.e. whether or not the user indicated by the user information can use the apparatus) and then executes communication  2  to transmit the utilization state information, resulting from the verification, to which both the identification information of the sender electronic apparatus and the electronic instrument information corresponding to the recipient are appended. 
     The electronic instrument corresponding to the electronic instrument information that has received the utilization state information  2  from eligible electronic apparatuses displays their utilization states, i.e., the identities of the electronic apparatuses that are available for use, as shown in  FIG. 54 , at the display screen  161  and then automatically selects a single electronic apparatus based upon, for instance, varying distances between the electronic instrument and the electronic apparatuses. Alternatively, the user may be allowed to select the specific category of the electronic apparatus that he wishes to use with a selection member (not shown).  FIG. 54  presence an example of a display in which the electronic camera A is selected as the electronic apparatus to be used. 
     After the electronic apparatus to be used is selected at the electronic instrument, the electronic instrument issues a utilization request to the selected electronic apparatus by transmitting the identification information corresponding to the selected electronic apparatus, the identification information corresponding to the sender electronic instrument and the user personal information through a communication  3 . Upon receiving the utilization request  3 , the electronic apparatus selected by the electronic instrument performs a custom setting operation for the electronic apparatus based upon the user personal information and also, it sends a verification notification attached with the identification information corresponding to the sender electronic apparatus and the identification information corresponding to the recipient electronic instrument through a communication  4  with the electronic instrument that has transmitted the utilization state. Upon receiving the verification notification  4 , the electronic instrument, i.e., the recipient of the verification notification, displays a message indicating that the selected electronic apparatus is now available for use at the display screen  161 , as shown in  FIG. 55 , for the user. Subsequently, the user can operate the electronic apparatus at the settings customized for his use. 
     Since this allows the electronic apparatus to verify with a high degree of reliability that the electronic instrument having initiated a trial communication belongs to a user, an erroneous user identification can be prevented and, at the same time, since the electronic apparatus is able to execute the user identification with arbitrary timing, the current user of the electronic apparatus can be effectively identified even after a user has changed-over. 
     The user-side electronic instrument, having received the electronic apparatus utilization information from an electronic apparatus (e.g., information indicating that the electronic apparatus is currently being used by another person, information indicating that only limited users are allowed use of the electronic apparatus), makes a decision as to whether or not the user can use this particular electronic apparatus. If the user-side electronic instrument decides that there is a single electronic apparatus in its vicinity that can be used by the user, this electronic apparatus is selected as the apparatus to be used by the user and transmits a message indicating that the user&#39;s intention to use the electronic apparatus and the user personal information to the electronic apparatus. Upon receiving the message indicating the user&#39;s intention to use the electronic apparatus and the user personal information from the electronic instrument, the electronic apparatus identifies the user carrying the electronic instrument as the user of the electronic apparatus and customizes the settings of the electronic apparatus for the user based upon the user personal information. 
     If the user-side electronic instrument determines that there are a plurality of electronic apparatuses in its vicinity that can be used by the user, it automatically selects the electronic apparatus that the user most likely wishes to use through a method similar to any of those adopted in the embodiment (the electronic apparatus present at the shortest distance, the electronic apparatus which is highest in the priority order, manual selection, etc.) and transmits a message indicating the user&#39;s intention to use the electronic apparatus and the user personal information to the selected electronic apparatus. Upon receiving the message indicating the user&#39;s intention to use the electronic apparatus and the user personal information from the electronic instrument, the electronic apparatus identifies the user carrying the electronic instrument as the user of the electronic apparatus and customizes the settings of the electronic apparatus for the user based upon the user personal information. 
     Alternatively, if the user-side electronic instrument determines that there are a plurality of electronic apparatuses in its vicinity that can be used by the user, it may transmits a message indicating the user&#39;s intention to use the electronic apparatus and the user personal information to the plurality of electronic apparatuses. In this case, upon receiving the message indicating the user&#39;s intention and the personal information from the electronic instrument, each of the plurality of electronic apparatuses identifies the user carrying the electronic instrument as the user of the electronic apparatus and, as a result, the settings at the plurality of electronic apparatuses are simultaneously customized for the user based upon the user personal information. Thus, the need to execute the user identification at each electronic apparatus is eliminated when the user wishes to use a plurality of electronic apparatuses at the same time. 
     As another alternative, the user-side electronic instrument may immediately transmit a message indicating the user&#39;s intention and the user personal information to any electronic apparatus in its vicinity without verifying the number of electronic apparatuses in its vicinity that can be used by the user. In this case, each electronic apparatus having received the message indicating the user&#39;s intention to use and the personal information from the electronic instrument identifies the user carrying the electronic instrument as the user of the electronic apparatus and, as a result, the settings at a plurality of electronic apparatuses or a single electronic apparatus can be customized for the user based upon the user personal information. While this does not allow the user to select a specific electronic apparatus for use, it eliminates the step in which a decision is made as to whether or not a given electronic apparatus is available for use by the user and, for this reason, it is effective in a situation in which the user urgently needs to operate an electronic apparatus customized for his use. 
     In addition, the electronic apparatus automatically selected by the user-side electronic instrument may be displayed at the display unit of the electronic instrument for user verification. Alternatively, a list of electronic apparatuses available for use by the user may be displayed at the user-side electronic instrument based upon the results of the communication to allow the user to select the electronic apparatus he wishes to use. 
     In the embodiment described above (see  FIG. 9 ), the user identification is achieved through a wireless (electromagnetic wave) communication between the electronic apparatus and the electronic instrument carried by the user. However, during this process, a redundant communication with an electronic instrument carried by a party other than the true user should be prevented by keeping the wireless transmission signal output level within a range lower than a predetermined value and thus, limiting the communication-enabled distance range based upon the assumption that electronic instruments have the average reception capability. This distance range is determined by taking into consideration the standard manner in which the electronic apparatus is operated, whether or not an object that blocks the electromagnetic waves is present between the electronic apparatus and the electronic instrument, the performance of the receiver at the electronic instrument and the like. It is desirable to set the range equal to or less than approximately 10 m under normal circumstances and to set the range equal to or less than 2 m and preferably equal to or less than 1 m in the case of an electronic apparatus that is primarily operated by the user carrying the apparatus. 
     In the embodiment described above (see  FIG. 9 ), the user identification is achieved through a wireless (electromagnetic wave) communication between the electronic apparatus and the electronic instrument carried by the user. However, the user identification may be instead achieved through either a non-contact method or a contact method other than wireless communication. In addition, by combining a contact-type user identification method (e.g., finger print detection) or a non-contact user identification method (e.g., pupil pattern detection, retina pattern detection, face image detection or voiceprint detection), both achieved based upon physical characteristics of the user, with the wireless user detection method that uses the electromagnetic wave described above, an even more reliable user identification is enabled. By adopting such a combined method, the electronic apparatus detects the user&#39;s physical characteristics and then identifies the communication partner whose physical characteristics read out from his electronic instrument present in the vicinity of the electronic apparatus through wireless communication match the detected physical characteristics as the true user. 
     In the embodiment described above (see  FIG. 9 ), the user identification is executed through wireless communication between the electronic apparatus and the electronic instrument carried by the user and the user verifies that he has been identified by the electronic apparatus by checking the user name displayed at the screen of the electronic apparatus. Instead, the electronic apparatus information may be transmitted by the electronic apparatus to the electronic instrument of the user identified by the electronic apparatus and the user&#39;s instrument, upon receiving the information, may display at the user-side electronic instrument, information indicating specifically which electronic apparatus has identified the user. In addition, the electronic instrument may notify the user that he has been identified by an electronic apparatus by utilizing a means for sound generation. In such a case, one of various sound patterns may be used in correspondence to a specific electronic apparatus type so that a user can ascertain the type of electronic apparatus which has identified him without having to check the display. 
     By adopting the structure described above, it becomes possible for the user to verify that he has been correctly identified by an electronic apparatus that does not include a means for display. In addition, such an audio notification allows the user to verify that he has been correctly identified by an electronic apparatus even if his electronic instrument does not include a means for display while keeping the electronic instrument in his pocket or the like. 
     In the embodiment described above (see  FIG. 11 ), the electronic apparatus wirelessly communicates with an electronic instrument carried by a user, and if a plurality of users are detected as a result, the electronic apparatus attempts communication with the electronic instruments by gradually increasing the transmission output and selects the user able to use the electronic apparatus with whom communication is achieved initially, as the correct user. However, the electronic apparatus may attempt communication with electronic instruments by gradually increasing the transmission output from the initial state and select the user able to use the electronic apparatus with whom communication is achieved first as the correct user, instead. 
     In the embodiment described above (see  FIG. 41 ), the user identification is executed with the timing with which the electronic apparatus is held by the user. However, the user identification may instead be executed through another method or with timing other than that used in the embodiment. For instance, the user identification may be executed with timing with which a given operating member of the electronic apparatus is operated (e.g., the timing with which the shutter release button  16  of the electronic camera  100  is pressed half way down). Since this allows the user identification to be executed at time when the user of the electronic apparatus is surely present in the vicinity of the electronic apparatus, a reliable user identification is achieved and, at the same time, the need for a special detection sensor such as a grip sensor is eliminated. Alternatively, a pair of elements, i.e., a light emitting element and a light-receiving element may be provided near the eyepiece unit of the viewfinder  11  to execute the user identification with the timing with which an increase in the quantity of reflected light is detected as a user moves his eyes or face closer to the eyepiece unit. As a further alternative, the user identification may be executed with the timing with which the memory card  104  is detached. Furthermore, the user identification may be executed with the timing with which the photographic lens is replaced, a zooming operation is performed, a focusing operation is performed or an external strobe is detached/attached in the electronic camera. 
     In the embodiment described above (see  FIG. 42 ), no user identification is executed if the electronic apparatus is set in the remote control mode. However, the remote control device may be equipped with a user identification function, instead. In this case, a user identification is enabled even in the remote control mode and, at the same time, it is not necessary to execute the user identification at individual electronic apparatuses when a plurality of electronic apparatuses are controlled by using a single remote control device. 
     In the embodiment described above (see  FIG. 43 ), the camera setting operation and the display operation are customized based upon the personal information on the user identified by the electronic apparatus. However, processing other than the camera setting operation and the display operation may be executed in conformance to the personal information which has been obtained. 
     For instance, the functions of operating members may be changed (e.g., the functions of the shutter release button  16  and the power switch  17  in  FIG. 2  may be switched) in conformance to the information indicating the user&#39;s favored hand (left-handed or right-handed). The level of force (resistance) required to depress the shutter release button  16  may be adjusted in correspondence to the age or gender of the user. Moreover, any portion of the display on the screen that uses different hues may instead be displayed with varying levels of contrast if the user has a vision problem such as color blindness. 
     In the embodiment described above (see  FIG. 9 ), the electronic camera  100  communicates with the electronic instrument carried by the photographer (user) and identifies the photographer operating the electronic camera  100 . However, the electronic camera  100  may instead communicate with an electronic instrument carried by a subject to set the operations of the electronic camera  100  in conformance to the personal information of the subject. 
     In this case, the electronic camera  100  engages in wireless communication with electronic instruments in the vicinity and eliminates the electronic instrument that appears to be carried by the photographer among the electronic instruments with which communication has been achieved, for instance. The photographer&#39;s electronic instrument may be pre-registered at the electronic camera  100 , or the electronic instrument present at the shortest distance from the electronic camera  100  may be identified as the electronic instrument carried by the photographer and thus eliminated. Next, the electronic camera  100  sets the distance range over which the subject of the electronic camera  100  should be present by using information indicating the photographic lens focal length or information indicating the photographic lens photographing distance and then selects the electronic instrument carried by the user (subject) of the electronic camera  100  present within the subject distance range from the electronic camera  100  among the electronic instruments with which wireless communication has been achieved based upon information related to the distances between the electronic camera  100  and the electronic instruments (the signal levels, the position information or the like). During this process, the photographing direction and the photographic field angle of the electronic camera  100  may be determined based upon azimuth information detected by a means for azimuth detection internally provided at the electronic camera  100  and the information indicating the photographic lens focal length, and the positions (the directions of the electronic instruments relative to the electronic camera  100  may be calculated based upon information indicating the measured positions (position information) of the electronic camera  100  and the electronic instruments so as to select the electronic instrument present within the photographic field angle along the photographing direction. 
     By selecting the electronic instrument carried by a party other than the photographer, i.e., the subject, as described above and, selectively engaging in wireless communication with the electronic instrument, the electronic camera  100  may obtain data indicating the color of the irises of the subject so that if any red-eye phenomenon occurs in the image data obtained by photographing the subject, the portion of the image data corresponding to the red-eye can be touched up by using the pupil color data. 
     In addition, the personal information may include data indicating whether or not the red-eye phenomenon tends to occur readily so that the electronic camera  100  can automatically set itself in a red-eye reproduction mode (a mode for reducing the extent of the red-eye phenomenon by emitting a small quantity of light at the strobe prior to a photographing operation and causing the pupils of the subject to contract) to perform a strobe photographing operation if the personal information obtained from the subject indicates that the user tends to induce the red-eye phenomenon readily. Furthermore, the personal information does not necessarily need to include direct data indicating whether or not the red-eye phenomenon tends to occur readily and, instead, it may include indirect data obtained by deducing the likelihood of the red-eye phenomenon based upon the general personal information such as the user&#39;s age and visual acuity. For instance, statistically, young children and myopic people tend to have large pupils and thus are likely to induce the red-eye phenomenon. Accordingly, the camera is forcibly set in the red-eye reproduction mode when photographing a young child or a myopic person. As an alternative means to a strobe light emission for causing the pupils to contract, a lamp or a very bright LED capable of continuously providing illumination over a predetermined length of time may be set in an ON state continuously prior to the photographing operation. 
     The first embodiment described above, in which a prompt user identification is achieved without placing a great onus on the user by identifying the user through wireless communication and the user highly likely to be the true user is automatically selected if a plurality of user candidates are detected wirelessly, enables the user to promptly start operating the electronic apparatus such as an electronic camera without having to perform any time-consuming tasks. 
     In addition, since the settings and the display at the electronic apparatus are adjusted by automatically optimizing them for use by the specific user in conformance to the general personal information bearing no direct relevance to the electronic apparatus settings, which the electronic apparatus has obtained from the user, an environment that allows inexperienced users, seniors and children as well as seasoned users to operate the electronic apparatus with ease and comfort is provided. 
     Second Embodiment 
     The second embodiment of the present invention is now explained in reference to the drawing. In the conceptual diagram of the second embodiment of the present invention presented in  FIG. 56 , an electronic camera that photographs a subject present within the photographing range also obtains related information from the subject and an information source present in the vicinity of the camera through wireless communication. In addition, the information related to the subject, which is made to correspond to the position of the subject within the photographic image plane, is appended to the image data obtained through the photographing operation together with other related information to constitute an image file. 
     When reproducing an image file, the image data having been obtained through a photographing operation are first reproduced and displayed as a home screen. Then, as the position within the image plane is specified at the home screen, the information related to the subject reproduced and displayed at the position is displayed at the screen. From the related information thus displayed, further related information linked with the information can be brought up on display. 
       FIG. 57  is a conceptual diagram of an electronic camera adopting the present invention and an electronic image communication system achieved by utilizing the electronic camera. In  FIG. 56 , an electronic camera  100  that includes a memory card saves electronic image data or digital image data (hereafter referred to as image data) obtained by photographing a photographic field contained within a photographic image plane in a predetermined size into a memory card. In addition, the electronic camera  100  has a short-distance wireless communication function (e.g., Bluetooth (registered trademark) enabling communication within a range of approximately a 10 meters) and engages in communication with a portable telephone  160  that also has a short-distance wireless communication function. It is assumed that this portable telephone  160  is carried by a subject, i.e., a person to be photographed by the electronic camera  100  and that a UIM card (user identification module card)  170  having stored therein user personal information, that can be loaded at the portable telephone  160 . In addition, the portable telephone  160  is internally provided with a means for positional measurement (a means for positional detection such as a GPS) unit. 
     When the person, i.e., the subject, is photographed with the electronic camera  100 , the personal information of the subject is transferred to the electronic camera  100  through communication between the electronic camera  100  and the portable telephone  160  carried by the subject. In addition, the electronic camera  100  detects the position of the subject within the photographic image plane through a method which is to be detailed later and stores an image file constituted of a set of the image-plane position information and the personal information as well as the image data obtained through the photographing operation into the memory card. The electronic camera  100  also transfers the image file to a personal computer  140  for personal use or an image server  150  via a wireless base station  120  through a wireless portable telephone line  190  and then via a wired or wireless public telephone line or the Internet  130 . 
     The electronic camera  100  includes a liquid crystal display screen at which an image file can be reproduced and displayed by reading out the image file saved in the memory card. In addition, the electronic camera  100  is capable of accessing various information servers and information sites based upon the information related to the subject via the wireless portable telephone line  190  and the Internet  130 , obtaining detailed information on the subject and reproducing and displaying the detailed information at the liquid crystal display screen. 
     The personal computer  140  for personal use includes a CRT display screen at which an image file can be reproduced and displayed by reading out the image file saved at the image server  150 . The personal computer  140  for personal use is also capable of accessing various information servers and information sites based upon the information related to the subject via the Internet  130 , obtaining detailed information on the subject and reproducing and displaying the detailed information at the CRT display screen. 
       FIGS. 58 and 59  present external views (a front view and a rear view) of the electronic camera  100  in  FIG. 57 , as achieved in an embodiment. As shown in  FIG. 58 , at the front of the electronic camera  100 , a photographic lens  10  which forms a subject image, a viewfinder  11  through which the photographic image plane is checked, a strobe  12  used to illuminate the subject during a photographing operation, a photometering circuit  13  that detects the brightness of the subject and a grip portion  14  that projects out from the camera main body to allow the electronic camera  100  to be held by hand are provided, whereas a shutter release button  16  operated to issue an instruction for a photographing start and a power switch  17  (a momentary switch which is alternately set to ON and OFF each time it is operated) through which the on/off state of the power to the electronic camera  100  is controlled are provided at the upper side of the camera. 
     As shown in  FIG. 59 , at the rear of the electronic camera  100 , an eyepiece unit of the viewfinder  11 , a left LCD (left screen)  21  having a substantially quadrangular screen for text and image display and a right LCD (right screen)  22  having a substantially quadrangular screen for text and image display are provided, and an up button  23  and a down button  24  for switching the image displayed at the left screen  21  are provided in the vicinity of, and to the left of the left LCD  21 , whereas the photographing mode button  25  operated to set the electronic camera  100  in a photographing mode, a reproduction mode button  26  operated to set the electronic camera  100  in a reproduction mode, an information display mode button  27  operated to set the electronic camera  100  in an information display mode and a CONFIRM button  29  used to set a selection item are provided around the right screen  22  and the left screen  21 . At a side surface, a memory card slot  30  at which a memory card  104  may be loaded is provided. 
     It is to be noted that the shutter release button  16 , the up button  23 , the down button  24 , the photographing mode button  25 , the reproduction mode button  26 , the information display mode button  27 , the SEND button  28  and the CONFIRM button  29  are all operating keys operated by the user. 
     It is also to be noted that over the surfaces of the left screen  21  and the right screen  22 , so-called touch tablets  66  having a function of outputting position data corresponding to a position indicated through a finger contact operation are provided, and they can be used to make a selection from selection items displayed on the screens or to select a subject displayed on the screen. The touch tablets  66  are each constituted of a transparent material such as a glass resin so that the user can observe images and text formed inside the touch tablets  66  through the touch tablets  66 . 
     In the block diagram in  FIG. 60 , which presents an example of an internal electrical structure that may be assumed in the electronic camera  100  shown in  FIGS. 58 and 59 , various components are connected with one another via a data/control bus  51  through which various types of information data and control data are transmitted. 
     The components are divided into the following five primary blocks, i.e., a block, the core of which is a photographing control circuit  60  that executes an image data photographing operation, a block, the core of which is constituted of a wireless communication circuit  710  that communicates with electronic instruments in the vicinity of the electronic camera  100  through wireless communication (Bluetooth or the like) and a wireless telephone circuit  720  that exchanges data with the outside through a wireless portable telephone line, a block constituted of the memory card  104  in which image files are stored and saved, a block, the core of which is a screen control circuit  92  that executes display of image data and information related to the image data and a block, the core of which is constituted of user interfaces such as operating keys  65  and a CPU  50  that implements integrated control on various control circuits. 
     The CPU  50  (central processing unit), which is a means for implementing overall control on the electronic camera  100 , issues various instructions for the photographing control circuit  60 , the wireless communication circuit  710 , the wireless telephone circuit  720 , the screen control circuit  92  and a power control circuit  64  in conformance to information input from the operating keys  65 , the touch tablets  66 , various detection circuits  70 , the power switch  17 , a timer  74 , the photometering circuit  13 , a GPS circuit  61  and an attitude detection circuit  62 . 
     An audio recording circuit  80  records sound generated by the subject during a photographing operation and sound made by the photographer after the photographing operation as a memorandum as audio data in conformance to control implemented by the CPU  50 , and such audio data are stored in the image file together with the image data. An audio reproduction circuit  81  reproduces the audio data which are stored in the image file together with the image data during an image data reproduction or other audio data, in conformance to control implemented by the CPU  50 . 
     The photometering circuit  13  measures the brightness of the subject and outputs photometric data indicating the results of the measurement to the CPU  50 . In conformance to the photometric data, the CPU  50  sets the length of the exposure time and the sensitivity of a CCD  55  through a CCD drive circuit  56 , and in addition, it controls the aperture value for an aperture  53  with an aperture control circuit  54  via the photographing control circuit  60  in conformance to the data indicating the settings. 
     In the photographing mode, the CPU  50  controls the photographing operation via the photographing control circuit  60  in response to an operation of the shutter release button  15 . If the photometric data indicate a low subject brightness, the CPU  50  engages the strobe  12  in a light emission operation via a strobe drive circuit  73  during the photographing operation. 
     The  61  (global positioning system circuit) detects information indicating the position of the electronic camera  100  by using information provided by a plurality of satellites orbiting around the earth and provides the photographing position information to the CPU  50  when an image is photographed. The attitude change detection circuit  62 , which is constituted of an attitude sensor of the known art (a gyro sensor, an azimuth sensor or the like) capable of detecting the attitude of the electronic camera  100 , detects information indicating the camera attitude and provides the photographing attitude information to the CPU  50  during the image photographing operation. 
     The timer  74  having an internal clock circuit detects information indicating a current time point and provides the photographing time point (day and time) information to the CPU  50  when a photographing operation is executed, the CPU  50  controls the various units in conformance to a control program stored in a ROM  67  (read only memory). In an EEPROM  68  (electrically erasable/programmable ROM) which is a nonvolatile memory, the setting information and the like necessary for the operations of the electronic camera  100  are stored. The CPU  50  implements control on a power supply  63  via the power control circuit  64  by detecting the operating state of the power switch  17 . 
     The photographing control circuit  60  focuses or zooms the photographic lens  10  through a lens drive circuit  52 , controls the exposure quantity at the CCD  55  through control implemented on the aperture  53  by engaging the aperture control circuit  54  and thus controls the operation of the CCD  55  through the CCD drive circuit  56 . The photographic lens  10  forms a subject image onto the CCD  55  with a light flux from the subject via the aperture  53  which adjusts the light quantity. This subject image is captured by the CCD  55 . The CCD  55  (charge-coupled device) having a plurality of pixels is a charge storage type image sensor that captures a subject image, and outputs electrical image signals corresponding to the intensity of the subject image formed on the CCD  55  to an analog processing unit  57  in response to a drive pulse supplied by the CCD drive circuit  56 . It is to be noted that the photographic field contained inside the angle of field which is determined by the effective image plane size at the CCD  55  and the focal length of the photographic lens  10  is photographed into the photographic image plane as image data. 
     The photographing control circuit  60  repeatedly executes the operation described above and, concurrently, the screen control circuit  92  repeatedly executes an operation in which the digital data sequentially stored into a photographic buffer memory  59  are read out via the data/control bus  51 . The digital data thus read out are temporarily stored into a frame memory  69 , the digital data are converted to display image data and are restored into the frame memory  69  and the display image data are displayed at the left screen  21 . In addition, the screen control circuit  92  obtains text display information from the CPU  50  as necessary, converts it to display text data which are then stored into the frame memory  69  and displays the display text data at the left screen  21  or the right screen  22 . Since the image currently captured by the CCD  55  is displayed at the left screen  21  in real time in the photographing mode in this manner, the user is able to set the composition for the photographing operation by using this through screen as a monitor screen. 
     The photographing control circuit  60  detects the state of the focal adjustment at the photographic lens  10  by analyzing the degree of the high-frequency component of the digital data stored in the photographic buffer memory  59  and performs a focal adjustment for the photographic lens  10  with the lens drive circuit  52  based upon the results of the detection. 
     During a photographing operation, upon receiving a photographing instruction from the CPU  50 , the photographing control circuit  60  engages the CCD  55  to capture a subject image via the CCD drive circuit  56  and temporarily stores image signals generated through the image-capturing operation as digital data (raw data) into the photographic buffer memory  59  via the analog processing unit  57  and the A/D conversion circuit  58 . The photographing control circuit  60  then generates image data by converting or compressing the digital data stored in the photographic buffer memory  59  on a temporary basis in a predetermined recording format (such as JPEG) and stores the image data back into the photographic buffer memory  59 . 
     The CPU  50  communicates with the electronic instrument such as a portable telephone carried by the subject via the wireless communication circuit  710  to collect information related to the subject and also to obtain information indicating the position of the electronic instrument. In addition, the CPU  50  obtains the photographing position information from the GPS circuit  61 , the photographing attitude information from the attitude detection circuit  62  and the focal length information with regard to the focal length of the photographic lens  10  from the photographing control circuit  60  and executes an arithmetic operation to obtain image-plane position information indicating the subject position within the image plane through a method which is to be detailed later based upon the information indicating the electronic instrument position, the photographing position information, the photographing attitude information and the focal length information. The CPU  50  stores the image data, the information related to the subject and the image plane subject position information into the memory card  104  as an image file. 
     In the reproduction mode, the screen control circuit  92  reads out an image file specified by the CPU  50  from the memory card  104 , temporarily stores the image file into the frame memory  69 , converts the image data to display image data and stores the display image data back into the frame memory  69  and then displays the display image data at the left screen  21 . It also stores text data of the reproduction mode instructions and the like into the frame memory  69  and displays the text data at the right screen  22  in response to an instruction issued by the CPU  50 . In the reproduction mode, upon receiving a transmission instruction issued by the CPU  50 , the wireless telephone circuit  720  reads out the specified image file from the memory card  104  and wirelessly transmits the image file to the outside. 
     In the information display mode, the CPU  50  first reproduces and displays specific image data at the left screen  21  via the screen control circuit  92  as in the reproduction mode, and also brings up a superimposed display of an information icon at the position in the image plane of the subject corresponding to the position information. In addition, it displays instruction text data at the right screen  22 . If the information icon is selected through the touch tablet  66  in the information display mode, the CPU  50  accesses the information source (homepage or the like) on the Internet via the wireless telephone circuit  720  based upon the subject-related information corresponding to the image-plane position information, displays a screen or the like of the homepage at the left screen  21  and display is an operational instruction screen at the right screen  22 . 
       FIG. 61  shows the data structure of image files stored in the memory card  104 . As shown in  FIG. 61 , a plurality of image files are saved at the memory card  104 . The image files are each constituted of image data and additional information data. The additional information data are constituted of photographing information data (see  FIG. 62 ) indicating various settings selected for the photographing operation, time point information data indicating the photographing time point, the position information data indicating the photographing position, the attitude information data indicating the camera attitude during the photographing operation, audio information data recorded during or after the photographing operation, general information data (see  FIG. 63 ) containing general information related to the photographing operation input during or after the photographing operation and subject information data containing information related to subjects which is entered during or after the photographing operation. 
     The subject information data are constituted of information related to the subjects (each of which may be a person, a building, a landscape or the like) photographed in the photographic image plane. For instance, the subject information data may be constituted of personal information data (see  FIG. 64 ) of a subject person and general information data related to a subject building. 
       FIG. 62  shows the structure of the photographing information data constituted of setting information indicating the photographic lens setting and the camera settings selected for the photographing operation. 
       FIG. 63  shows the structure of the general information data constituted of Internet access data (homepage addresses or the like) indicating how individual sets of information may be accessed on the Internet, data indicating the contents of the individual sets of information and position information data indicating the positions of the originators of the individual sets of information. 
       FIG. 64  shows the structure of the personal information data constituted of the image-plane position information indicating a specific subject within the image plane to which the personal information corresponds, position information indicating the position of the electronic instrument from which the personal information has been transmitted, Internet access information data (the homepage URL and the like) of the individual, the e-mail address of the individual, the individual&#39;s name, date of birth, preferred language, physical data (visual acuity, diopter, favored hand), tastes or person&#39;s liking (favorite color, etc.) and other data. 
       FIG. 65  is a transition diagram of the state assumed by the electronic camera  100  in the embodiment of the present invention. The electronic camera, which assumes one of the three operating modes, i.e., the photographing mode, the reproduction mode and the information display mode, makes a shift among the modes in response to an operation of one of the three operating buttons (the photographing mode button  25 , the reproduction mode button  26  and the information display mode button  27 ). As the power is turned on, the electronic camera shifts to the photographing mode first. In the photographing mode, a photographing operation, a wireless communication operation and an image file preparation and storage operation are executed. In the reproduction mode, an image file reproducing operation and a transmission operation to transmit an image file to the outside are executed. In the information display mode, information related to the image data is collected by, for instance, accessing the Internet based upon the additional information data corresponding to the image data and the information thus collected is displayed. 
       FIG. 66  presents a flowchart of the main flow of the operations executed in the electronic camera  100  (the CPU  50 ) in the embodiment described above. First, the power is turned on as the power switch  17  is operated in S 10 , and then, a photographing mode subroutine is executed in S 20  to enter a photographing-enabled state. If the shutter release button  16  is operated in the photographing mode, a release interrupt processing subroutine in S 30  is executed to perform a photographing operation. In addition, while the photographing operation is executed, a wireless interrupt subroutine in S 40  is called up from the release interrupt processing subroutine in S 30  to engage the electronic camera in wireless communication with electronic instruments present in the vicinity of the electronic camera to collect subject information data and general information data. The subject information data and the general information data thus collected constitute the additional information data together with the photographing information data, and the additional information data are stored together with the image data into the memory card  104  as an image file. 
     If one of the three operating buttons (the photographing mode button  25 , the reproduction mode button  26  and the information display mode button  27 ) is operated in a given operating mode, mode switching interrupt processing in S 50  is started up to switch over to the mode selected in correspondence to the operating button which has been operated. 
     In the reproduction mode in S 60 , an image file stored in the memory card  104  is read out and the image data are reproduced and displayed at the display screen, and if the SEND button  28  is operated, a transmission interrupt processing subroutine in S 70  is executed to transmit the image file containing the image data currently reproduced in the reproduction mode to an external recipient. 
     In the information display mode in S 80 , image data are first reproduced and displayed at the display screen as detailed later and also, the subject information itself, which includes the image-plane position information corresponding to the position specified by the user through the touch tablet  66  on the display screen, or information collected by accessing the Internet based upon the Internet access information contained in the subject information is brought on display at the display screen. 
     In the detailed flowchart of the photographing mode subroutine presented in  FIG. 67 , after the subroutine is started up in S 20 , the processing in S 201  is repeatedly executed. In S 201 , image data sequentially generated by the CCD  55  in conformance to the photographing setting condition selected by the user are displayed at the left screen  21  as shown in  FIG. 68  and the selected photographing setting condition is displayed in text at the screen LCD  22 . 
     In the detailed flowchart of the release interrupt processing subroutine presented in  FIG. 69 , after the subroutine is started up in S 30 , a verification is achieved in S 301  as to whether or not the camera is currently set in the photographing mode, and if it is decided that the camera is not set in the photographing mode, the operation makes a return in S 305 . If, on the other hand, it is decided that the camera is set in the photographing mode, an image-capturing operation is executed in conformance to the photographing setting condition selected by the user in S 302  to generate image data, and then the wireless communication processing subroutine in S 40 , which is to be detailed later, is executed to generate additional information data. In S 303 , an image file is generated by incorporating the image data and the additional information data and the image file is saved into the memory card  104 . In S 304 , the image data are displayed at the screen over a predetermined length of time, and then the operation makes a return in S 305 . It is to be noted that the image data achieves a predetermined photographic image plane size so that a photographed subject is bound to be present somewhere within this photographic image plane in accordance to the photographic composition. 
     In the detailed flowchart of the wireless communication processing subroutine presented in  FIG. 70 , after the subroutine is started up in S 40 , a verification is achieved in S 401  as to whether or not the electronic camera is currently set in the photographing mode, and if it is decided that the camera is not set in the photographing mode, the operation makes a return in S 408 . If, on the other hand, it is decided the camera is set in the photographing mode, a means for wireless communication  710  is engaged in S 402  to attempt wireless communication with electronic instruments in the vicinity of the electronic camera  100  (a portable telephone carried by a subject person, an electronic sightseeing guide apparatus installed in the vicinity of a historical site and capable of transmitting sightseeing information with regard to the historic site through wireless communication or the like). During this process, the signal transmission output for the wireless communication is adjusted in conformance to the focal length of the photographic lens. For instance, since it can be assumed that the subject is present over a long distance when the focal length is large, a signal transmission output level is set higher accordingly. If it is decided in S 403  that no communication has been achieved, the operation makes a return in S 408 . If communication has been achieved, on the other hand, the position information data indicating the electronic instrument position and the subject information data (or the general information data) are obtained through wireless communication from the electronic instrument of the communication partner with whom communication has been achieved in S 404 . In S 405 , the position information indicating the position of the electronic camera  100  itself is received from the GPS circuit  61 , the attitude information indicating the attitude of the electronic camera  100  itself is received from the attitude detection circuit  62 , and the position of the subject (electronic instrument) relative to the electronic camera  100  is determined by using the electronic instrument position information, the position information indicating the position of the electronic camera  100  and the attitude information indicating the attitude of the electronic camera  100 , as explained later. In S 407 , the focal length information indicating the focal length of the photographic lens  10  is received from the photographing control circuit  60  and the angle of field for the photographing operation is calculated based upon the focal length information and the effective image plane size at the image-capturing element as detailed later, and also, based upon the position information indicating the position of the subject relative to the electronic camera  100 , data indicating the position of the subject within the photographed image plane (image-plane position information data) are generated before the operation makes a return in S 408 . 
     In the sequence diagram provided in  FIG. 71  to facilitate an explanation of the wireless communication operation between the electronic camera and an electronic instrument during the release interrupt processing and the wireless communication processing, a shutter release operation is first performed at the electronic camera  100 , a photographing operation is performed in response and then wireless communication is attempted at the electronic camera  100  by transmitting a communication request  1  to electronic instruments present in the vicinity. The transmission request  1  includes the identification information of the electronic camera  100  indicating the sender. 
     An electronic instrument having received the communication request  1  returns a response  2  to the electronic camera  100  by transmitting the identification information of the sender electronic instrument and the identification information of the recipient electronic camera. 
     Upon receiving the response  2 , the electronic camera  100  verifies the communication partner based upon the electronic instrument identification information and transmits an information request  3  so that information related to the communication partner can be requested by specifying the communication partner&#39;s electronic instrument. The information request  3  transmitted to the electronic instrument includes the identification information of the recipient electronic instrument, the identification information of the sender electronic camera  100 , the contents of the information being requested and the like. 
     The electronic instrument corresponding to the electronic instrument identification information included in the information request  3  transmits information  4 , i.e., the requested related information (the position information, the access information, etc.) to the electronic camera. The information  4  transmitted to the electronic camera includes the identification information corresponding to the electronic camera  100 , i.e., the recipient, the identification information corresponding to the electronic instrument, i.e., the sender and the related information. 
     The electronic camera  100  receives the information  4  transmitted by the electronic instrument. The electronic camera  100  sequentially issues the information request  3  to all the electronic instruments having responded to the communication request  1 . Upon receiving the information  4  from all the electronic instruments, it ends the wireless communication, generates an image file and saves the image file into the memory card  104 . 
       FIGS. 72 and 73  illustrate how the image-plane position information data indicating the position of a subject within the image plane may be obtained. The subject position information data and the photographing position information data are provided as positional coordinates in a three-dimensional coordinate system the center of which is set at a predetermined reference origin point. First, as shown in  FIG. 72 , the reference coordinate system is converted to a coordinate system (an axis P: extending along the camera optical axis, an axis Q: extending along the lateral side of the camera, an axis R: extending along the longitudinal side of the camera) through a parallel translation of the origin point of the reference coordinate system to a central point  3  (the photographing position) of the electronic camera  100 , and the positional coordinates of the subject  203  after the conversion are determined. 
     In addition, as shown in  FIG. 73 , an angle of field  5  (indicated by the one-dot-and-bar chain line) is calculated along photographic optical axis (along the P axis) based upon the photographic lens focal length information and the effective image plane size of the CCD . Next, the direction in which a straight line connecting the origin point  3  and the subject position  203  extends is calculated. By comparing the angle of field  5  and the direction of the straight line  4 , a decision can be made as to whether or not the subject is contained in the image plane and the position of the subject within the image plane (the image-plane position information data) can be calculated as shown in  FIG. 74 . 
     In the detailed flowchart of the mode switching interrupt processing subroutine presented in  FIG. 75 , which is started up in response to an operation of an operating button (the photographing mode button  25 , the reproduction mode button  26  or the information display mode button  27 ), after the subroutine is started up in S 50 , a verification is achieved in S 501  as to whether or not the operated button is the photographing mode button  25  and if it is decided that the photographing mode button  25  has been operated, the operation shifts to the photographing mode subroutine in S 20 . If, on the other hand, it is decided that the photographing mode button  25  has not been operated, a verification is achieved in S 501  as to whether or not the operated button is the reproduction mode button  26 , and if it is decided that the reproduction mode button  26  has been operated, the operation shifts to the reproduction mode subroutine in S 60 . If it is decided that the reproduction mode button  26  has not been operated, the operation shifts to the information display mode subroutine in S 80 . 
     In the detailed flowchart of the reproduction mode subroutine presented in  FIG. 76 , after the subroutine is started up in S 60 , the processing in S 601  is repeatedly executed. In S 601 , image data of an image file selected from the image files stored in the memory card  104  are read out in response to an operation of the direction button  23  or  24 , the selected image data are reproduced and displayed at the left screen  21  and the operational instructions are displayed at the right screen  22 , as shown in  FIG. 77 . 
     In the detailed flowchart of the transmission interrupt processing subroutine presented in  FIG. 78 , after the subroutine is started up in S 70 , a verification is achieved in S 701  as to whether or not the electronic camera is currently set in the reproduction mode, and if it is decided that the electronic camera is not set in the reproduction mode, the operation makes a return in S 703 . If, on the other hand, it is decided that the camera is set in the reproduction mode, potential recipients are displayed at the right screen  22  in S 702  as shown in  FIG. 79 . The recipients include the subject within the image currently reproduced and displayed at the left screen  21 . Once the desired recipient is specified by the user, the image file containing the image data currently reproduced and displayed at the left screen  21  is read out from the memory card  104  and this image file is transmitted through the wireless telephone circuit  720  to the recipient specified by the user before the operation makes a return in S 703 . 
     In the detailed flowchart of the information display mode subroutine presented in  FIG. 80 , after the subroutine is started up in S 80 , the home screen of the information display mode is first displayed in S 801 . In the home screen, image data are displayed at the left screen  21 , as shown in  FIG. 77 . If the operation has shifted into the information display mode from the reproduction mode, the image data that were reproduced and displayed at the left screen  21  in the reproduction mode are kept on display, whereas if the operation has shifted into the information display mode from the photographing mode, the image data of the image file obtained through the most recent photographing operation are displayed. In addition, at the left screen  21 , graphics  82  and  83  indicating subject information are displayed at positions corresponding to individual sets of image-plane position information data contained in the additional information data and also an icon  85  for bringing up a display of a map based upon the photographing position information data, an icon  84  for bringing up a display of news items reported on the photographing date based upon the photographing time point information data and an icon  86  for bringing up a display of the general information are displayed, all superimposed over the image data. At the right screen  22 , the operating instructions with respect to the left screen  21  are displayed. 
     When the user touches a desired icon at the left screen  21 , the position of the point on the screen touched by the user is detected through the touch tablet  66  in S 802  and subsequently, the operation branches to one of the following steps in correspondence to the position on the screen that has been touched by the user. 
     If the icon  85  in  FIG. 81  is touched, the operation branches to S 803  in which a map database on the Internet is accessed via the wireless telephone circuit  720 , map data containing the photographing position are downloaded from the map database in conformance to the photographing position information corresponding to the image data displayed at the home screen and the downloaded map data are displayed at the left screen  21 , as shown in  FIG. 82 . At the left screen  21 , a reduction icon  87  and an enlargement  88  are superimposed over the map display and as the user touches one of the icons, the map display is either reduced or enlarged in correspondence to the icon that has been touched. At the right screen  22 , a thumbnail image (reduced image) of the image data having been displayed at the home screen is displayed and the home screen display in S 801  is restored if the user touches this thumbnail image. 
     If the icon  84  in  FIG. 81  is touched, the operation branches to S 804  in which a news database on the Internet is accessed via the wireless telephone circuit  720 , news data of the news reported on the photographing date are downloaded from the news database based upon the photographing time point information corresponding to the image data displayed at the home screen and the downloaded news data are displayed at the left screen  21 , as shown in  FIG. 83 . At the left screen  21 , a list of news items and detail graphics  89  are displayed and if a user touches a specific detail icon, details of the corresponding news item are displayed at the left screen  21 . At the right screen  22 , a thumbnail image (reduced image for pre-view) of the image data having been displayed at the home screen is displayed and the home screen display in S 801  is restored if the user touches this thumbnail image. 
     If the icon  82  or the icon  83  in  FIG. 81  is touched, the operation branches to S 805  in which an information source (a homepage or a database) where detailed information related to the subject is stored is accessed on the Internet via the wireless telephone circuit  720  in conformance to the Internet access information data contained in the subject information indicated by the icon and the top screen of the homepage is brought up on display. For instance, if the icon  82  is touched, the top screen of the homepage of the subject person is displayed at the left screen  21 , as shown in  FIG. 84 , to enable the user to display a screen at a lower layer or link to another homepage through the touch tablet  66 . If, on the other hand, the icon  83  is touched, a commentary screen related to a historical structure photographed in the image is brought up on display at the left screen  21 , as shown in  FIG. 85 , to enable the user to display a more detailed description or an image of the historical structure at the left screen  21  through the touch tablet  66 . At the right screen  22 , a thumbnail image (reduced image) of the image data having been displayed at the home screen is displayed and the home screen display in S 801  is restored if the user touches this thumbnail image. 
     In  FIG. 86  illustrating the structure of the wireless communication circuit  710  in the electronic camera, the wireless communication circuit  710  is enclosed by an electromagnetic shield film  79  along the camera rear surface (in the direction opposite from the direction along which the photographic optical axis extends, i.e., the side on which the photographer is present), the camera lower surface, the camera upper surface and the camera left and right side surfaces. Thus, the wireless communication circuit  710  is allowed to communicate readily with the portable telephone  160  carried by the subject present in the direction along which the photographing operation is performed with the camera to collect the subject information with a high degree of reliability. At the same time, since it cannot readily communicate with a portable instrument carried by a non-subject party who is not present along the photographic optical axis, the collection of unnecessary information irrelevant to the subject can be minimized. In  FIG. 87  showing the communication directivity of the wireless communication circuit  710 , extreme directivity manifests to the front of the electronic camera  100  (along the optical axis  40 ) and the directivity to the rear is slight. 
     By allowing the wireless communication circuit  710  to manifest extreme directivity along the direction in which the photographing operation is performed with the camera through the structure shown in  FIG. 86  as described above, the likelihood of communicating with the electronic instrument carried by the subject is increased. It is to be noted that the directivity may be adjusted by adopting a specific antenna structure instead of by using an electromagnetic shield film. 
     In the wireless communication processing shown in  FIG. 71 , the electronic camera  100  collects subject information by communicating with electronic instruments in the vicinity during the photographing operation. However, the subject information may be transmitted to the electronic camera engaged in the photographing operation from a subject-side electronic instrument either before or after the photographing operation, instead. At the portable telephone  160  carried by the subject, such as that shown in  FIG. 88 , a UIM card or the like having stored and saved therein the personal information on the user carrying the portable telephone  160  is loaded. The portable telephone  160  includes a display screen  161  and operating buttons  162 . When the subject person wishes to transmit his personal information to the electronic camera, the subject person first operates an operating button  162  of the portable telephone  160  to set the portable telephone  160  in a personal information transmission mode, enabling transmission of the subject information to the electronic camera. Once the transmission is completed, a message indicating the recipient electronic camera and the transmission completion is displayed at the display screen  161 , as shown in  FIG. 89 . Since this allows the subject to decide whether or not his personal information should be transmitted, random circulation of the personal information is prevented. 
     In the detection of the position of the subject within the image plane shown in  FIG. 73 , the information indicating the electronic camera position and the information indicating the electronic instrument position detected with GPS units are utilized. However, the subject position within the image plane may be detected through a method other than this.  FIG. 90  shows an example in which the subject position within the photographic image plane is detected by using a highly-directional wireless antenna  75  (its directivity  43  manifests with great intensity along a single direction  42 , as shown in  FIG. 91 ) which is utilized as a communication antenna of the wireless communication circuit  710 . It is to be noted that details of a structure that may be adopted in such a compact directional antenna are disclosed in, for instance, Japanese Laid-Open Patent Publication No. 2000-278037. 
     The electronic camera  100  is internally provided with the highly-directional wireless antenna  75  and a drive unit  76  that adjusts the direction of the highly-directional wireless antenna  75  by scanning the highly-directional wireless antenna  75  through mechanical drive. While the wireless communication processing is in progress during the photographing operation, the CPU  50  engages the drive unit  76  to drive the highly-directional wireless antenna so as to scan inside the photographic image plane and it concurrently communicates with a subject present within the image plane to collect the subject information data. This makes it possible to correlate scanning position of the highly-directional wireless antenna  75  (i.e., image-plane position information data) with the subject information data. 
     In the detailed flowchart of the wireless communication processing subroutine executed in conjunction with using the highly-directional wireless antenna  75 , which is presented in  FIG. 92 , after the subroutine is started up in S 40 , a verification is achieved in S 411  as to whether or not the electronic camera is currently set in the photographing mode, and if it is decided that the camera is not set in the photographing mode, the operation makes a return in S 419 . If, on the other hand, it is decided that the camera is set in the photographing mode, the scanning position of the highly-directional wireless antenna  75  is initialized in S 412 . It is to be noted that the image plane size is determined in conformance to the photographic lens focal length information and the CCD effective image plane size. In S 413 , wireless communication with electronic instruments present in the vicinity of the electronic camera  100  (a portable telephone carried by a subject person, an electronic sightseeing guide apparatus installed near a historical site and capable of transmitting sightseeing information with regard to the historical site through wireless communication) is attempted with the means for wireless communication  710 . If it is decided in S 414  that no communication has been achieved, the operation proceeds to S 417 . If, on the other hand, communication has been achieved, the subject information data are obtained through wireless communication from the electronic instrument of the communication partner with whom communication has been achieved in S 415 . In S 416 , image-plane position information contained in the subject information data is designated as the information indicating the scanning position of the highly-directional wireless antenna  75 . In S 417 , the scanning position of the highly-directional wireless antenna  75  it is updated. In S 418 , a verification is achieved as to whether or not the scanning position of the highly-directional wireless antenna  75  is at the end position and, if it is decided that the scanning position is not at the end position, the operation returns to S 413  to repeatedly executed the operation described above, whereas if the scanning position is at the end position, the operation makes a return in S 419 . 
     In  FIG. 93  showing a display example of the home screen brought up in the information display mode, no graphics are displayed at the left screen  21  unlike the example shown in  FIG. 81 . If the user touches the display of the person or the building on the left screen, the contact position is detected through the touch tablet  66 , and the subject information containing the image-plane position information data corresponding to the contact position is brought up on display at the right screen  22 , as shown and  FIG. 94 . In addition, on the left screen  21 , an arrow mark  44  is displayed at the subject position corresponding to the subject information. This allows the user to view the image data reproduced and displayed at the left screen  21  without obtrusive graphics crowding on the screen and to review the subject information at the right screen  22  while the image data remains on display at the left screen  21  and to verify the relationship between the subject information and the subject on the image simply by touching the subject which interests the user at the left screen  21 . In addition, it makes it possible to display the subject information directly from the reproduction mode by integrating the information display mode and the reproduction mode. 
     Furthermore, the outlines of the image a subjects in the image and displayed may be extracted through an image analysis, so as to enable a display of the subject information corresponding to image-plane position information data contained in an area  46  at the left screen  21  if the user touches the area near an outline (the area  46  in the vicinity of the person  45  in  FIG. 95 ). In this case, even if the user touches a position other than the position of the electronic instrument which has transmitted the subject information to the electronic camera, e.g., if the user touches the face of the subject person, the subject information corresponding to the subject person can be brought up on display. 
       FIG. 96  presents a detailed flowchart of an information display mode subroutine achieved by executing additional processing between S 801  and S 802  in the information display mode subroutine shown in  FIG. 80 . Through the additional processing, the subject information contained in an image file is transplanted into a similar image file that does not have any subject information. 
     After the home screen is displayed in S 801 , an image analysis is executed on the image data reproduced and displayed at the left screen  21  in S 811  to identify the primary subjects (a primary subject may be, for instance, a person or a building taking up a relatively large area in the image plane) and then a verification is achieved in S 812  as to whether or not there is any subject information containing image-plane position information data present in the area occupied by a primary subject. If it is decided that there is such subject information, the operation proceeds to S 802 . If, on the other hand, it is decided that there is no such subject information, image files with the photographing time point data indicating the same photographing date as the photographing date indicated by the photographing time point data of the image data the reproduced image of which is currently on display are searched in the memory card  104  and are extracted in S 813 . Next, an image analysis is executed on the image data in these files and image data having a subject similar to the primary subject of the image data the reproduced image of which is currently on display are extracted. Then, a verification is achieved as to whether or not image-plane position information is attached to the similar subject in the extracted image data and, if any image-plane position information is attached, the subject information containing this image-plane position information is appropriated as the subject information of the primary subject of the image data the reproduced image of which is currently on display. Accordingly, the image file containing the image data the reproduced image of which is currently on display is updated by attaching image-plane position information indicating the position of the primary subject within the image plane determined through the image analysis. 
     In S 814 , the photographing position information data, the photographing attitude information data and the focal length information data are read out from the image file containing the image data the reproduced image of which is currently on display, and a primary subject is identified upon data corresponding to the information data, which are obtained from a map database on the Internet and the results of the image analysis executed in S 813 . For instance, if a triangular object appearing to be a mountain is shown in an image plane photographed along a southerly direction from the vicinity of Lake Yamanaka, the object is identified as Mount Fuji. After a specific primary subject is identified, a search is conducted on the Internet by using the name of the primary subject as a keyword, access information with regard to a homepage providing information on the primary subject is obtained and the image file containing the image data the reproduced image of which is currently on display is updated by appending image-plane position information corresponding to the position of the primary subject within the image plane ascertained through the image analysis. 
     After transplanting the subject information into the image file with no subject information from another file or from the Internet, as described above, the operation proceeds to S 802 . Thus, even when no subject information related to a subject has been obtained during the photographing operation (e.g. when there is no sightseeing guide apparatus capable of wirelessly providing subject information present in the vicinity of the electronic camera used to photograph a landscape image or the like), information related to the subject can be displayed when the image data are reproduced in the information display mode through this subroutine. It is to be noted that the image files searched in S 813  are not limited to those obtained on the same photographing date. For instance, a predetermined number of image files photographed before and after the image file with no subject information may be searched, instead. The camera automatically identifies the subject by using the photographing position information data, the photographing attitude information data and the focal length information data and downloads information on the identified subject from the Internet in S 814 . However, the user may identify the subject by reviewing the image data, input or download from the Internet information on the specified subject and update the image file by pasting the information onto the subject position on the screen image instead. 
       FIG. 97  is another conceptual diagram of an electronic camera adopting the present invention and an electronic image communication system achieved by using the electronic camera. In the electronic image communication system in  FIG. 57 , the personal information data stored in the UIM card  170  loaded at the portable telephone  160  are read into the electronic camera  100  through a short-distance wireless communication between the electronic camera  100  and the portable telephone  160  carried by the user. In the electronic image communication system in  FIG. 97 , on the other hand, as a wireless tag (a non-contact IC card) having stored therein personal information data moves closer to the electronic camera  100  having an internal non-contact wireless read unit, the personal information data are automatically read from the wireless tag into the electronic camera  100 . 
     As described above, the electronic image communication system shown in  FIG. 97  allows the subject to communicate with the electronic camera  100  simply by carrying a compact wireless tag (a non-contact IC card) which does not require a power source. 
     In the embodiment described above (see  FIGS. 56 and 66 ), subject information (including position information) is automatically transferred to the electronic camera through wireless communication between the electronic camera and a portable instrument carried by the subject during an image data photographing operation and, as a result, the need to perform a special operation to obtain the subject information is eliminated. In addition, since the information indicating the subject position assumed at the time when the image data are photographed can be obtained, the image-plane position information data indicating a position accurately corresponding to the actual position on the image plane can be obtained by using the position information. It is to be noted that the subject position information should be obtained without a significant time lag relative to the timing with which the subject is photographed (it is desirable to obtain the subject position information within about 1 second prior to or following the photographing operation) in order to ensure that a position accurately corresponding to the actual position on the image plane is ascertained. 
     In the embodiment described above (see  FIGS. 56 and 66 ), information related to a subject in the image which interests the user viewing the reproduced image data on display can be reviewed with ease and speed simply by touching the icon displayed in correspondence to the image-plane position information at the screen or by touching the subject. 
     In the embodiment described above (see  FIGS. 56 and 70 ), subject information is obtained from a subject through a short-distance wireless communication to raise the probability of achieving communication with the subject present in the vicinity of the electronic camera and also to reduce the likelihood of unnecessarily communicating with an electronic instrument that is present at a long distance from the electronic camera and that has no relation to the subject. In addition, since the signal transmission output level for the wireless communication is adjusted in conformance to the photographic lens focal length , a reliable wireless communication with the subject is achieved and, at the same time, the likelihood of achieving wireless communication with a party other than the subject is reduced. 
     In the embodiment described above (see  FIG. 78 ), the image data reproduced and displayed in the reproduction mode can be transmitted to a transfer address indicated in subject information data obtained during the image data photographing operation. Thus, image data can be transmitted with ease to a stranger met by chance on a trip or the like without having to keep track of the postal address, the e-mail address or the like of the stranger. This feature is particularly convenient when there are numerous people photographed in a group picture because it relieves the user from the task of performing a special operation to send the image data to multiple recipients. 
     In the embodiment described above (see  FIG. 82 , etc.), when displaying subject information specified by the user at the screen in the information display mode, the original image data in which the subject is photographed are displayed (as a thumbnail image) at the same time, enabling the user to understand the relationship between the image data and the subject intuitively, and also, the home screen display can be promptly recovered by specifying the image data through the touch tablet  66  which enables the user to quickly and easily review the subject information in reference to the image data. 
     In the embodiment described above (see  FIGS. 86 and 87 ), the wireless communication directivity of the wireless communication circuit  710  is restricted so as to manifest along the direction in which the subject is likely to be present relative to the electronic apparatus main unit by using an electromagnetic shield or the like and thus, reliable wireless communication with the subject is achieved to obtain the subject information wirelessly and the likelihood of achieving wireless communication with a party other than the subject is reduced. 
     In the embodiment described above (see  FIGS. 88 and 89 ), a subject information transmission to the electronic camera is initiated on the subject side and, as a result, it becomes possible to prevent uncontrolled circulation of personal information and the like to the outside, as necessary. 
     In the embodiment described above (see  FIG. 92 ), a scan within the image plane is performed with a highly-directional wireless antenna to collect the image plane position information corresponding to a subject, to allow the system to be configured at low cost without having to provide a special means for positional measurement such as GPS unit at the electronic instrument on the subject side. 
     In the embodiment described above (see  FIG. 96 ), the image plane position information corresponding to a specific subject is detected through an image analysis and the subject information is copied from a similar image file, to enable the user to reference the subject information for a review even when no subject information has been obtained during the photographing operation. In addition, since information indicating the image-plane position of a subject is detected through image analysis, the subject is identified based upon the results of the image analysis and the position information and subject information related to the identified subject is collected from an information source on the Internet or the like, the user is able to reference the subject information for review even when no subject information has been obtained during the photographing operation. 
     In the embodiment described above (see  FIG. 97 ), the electronic camera includes a non-contact IC card (wireless tag) read circuit to execute a non-contact read of subject information from a non-contact IC card (wireless tag) carried by the subject. Thus, the subject only needs to hold a compact and light-weight non-contact IC card which does not require a power source to ensure that his subject information is provided to the electronic camera without having to perform any operation. 
     EXAMPLES OF VARIATIONS 
     The present invention is not limited to the embodiment described above and allows for numerous variations and modifications. 
     In the embodiment described above (see  FIG. 56 ), subject information is obtained through a wireless (electromagnetic wave) communication between the electronic camera and the electronic instrument carried by a subject. During this process, a redundant communication with electronic instruments carried by parties other than the true user should be prevented by keeping the wireless transmission signal output level within a range lower than a predetermined value and thus limiting the communication-enabled distance range based upon the assumption that electronic instruments have the average reception capability. This distance range is determined by taking into consideration standard manner in which the electronic apparatus is operated, whether or not an object that blocks electromagnetic waves is present between the electronic apparatus and the electronic instrument, the performance of the receiver at the electronic instrument and the like. However, it is desirable to set the distance range to approximately 10 m or less in correspondence to the focal length of the standard photographic lens. 
     In the embodiment described above (see  FIG. 56 ), the wireless communication circuit engages in communication through a short-distance wireless system such as Bluetooth. However, the short-distance wireless communication may be achieved through a system other than Bluetooth, such as wireless LAN (IEEE802.11) or infrared communication (IrPA). In addition, communication may be achieved by simultaneously utilizing a plurality of short-distance wireless systems. In the latter case, an electronic instrument with any type of short-distance function, carried by a subject can engage in wireless communication with the electronic camera. 
     In the embodiment described above (see  FIG. 56 ), subject information is transferred through a wireless (electromagnetic wave) communication between the electronic camera and the electronic instrument carried by a subject. However, the subject information may instead be transferred through another non-contact or contact method. 
     In the embodiment described above (see  FIG. 60 ), sound can be recorded with the audio recording circuit  80  during the photographing operation. However, a highly directional microphone may be utilized during a photographing operation to record sound generated by a subject present within the image plane, the recorded audio data may be stored into the image file in correspondence to the image plane subject position information and the recorded audio may be reproduced if the subject in the reproduced image display is specified through the touch tablet or the like in the information display mode, instead. In addition, a plurality of microphones with extreme directivity may be utilized to record sound generated by a plurality of subjects in the image plane at the same time and the sound corresponding to a subject specified through the touch tablet or the like in the reproduced image display in the information display mode may be reproduced. 
     Also, sound generated by a subject or voice commentary related to the subject may be transmitted as subject audio information to the electronic camera from an electronic instrument mounted with a microphone which is carried by the subject or an electronic instrument having pre-stored audio data of the information related to the subject any time, regardless of whether or not a photographing operation is in progress and regardless of photographing timing. In such a case, subject audio information may be appended to image data obtained by photographing the subject and saved in correspondence to the position of the subject within the photographic image plane indicated by the image-plane position information. Then. if a given subject is specified with a pointing device such as a touch tablet at the display screen while the user is reviewing the image reproduced from the image data in the information display mode, the subject audio information stored in correspondence to the position of this particular subject is reproduced. As a result, it becomes possible to provide the viewer with diverse types of subject information including visual information and audio information. 
     In the embodiment described above (see  FIG. 60 ), a position on the left screen  21  or the right screen  22  is specified through the touch tablet  66 . However, another pointing device may be utilized for this purpose. For instance, a track ball or a mouse may be utilized as a means for screen position specification. In addition, if an electronic viewfinder (a viewfinder that enlarges through an optical system a screen display brought up at a compact means for screen display to facilitate user observation) is used, the direction along which the line of sight of the user extends (the site line position, the visual focus position) may be detected to enable a screen position specification. In addition, when using the touch tablet  66 , a member (pen) provided exclusively for position specification may be used instead of the user&#39;s finger to ensure that a position is specified with greater accuracy and that unnecessary subject information is not displayed in response to an inadvertent finger contact. 
     In the embodiment described above (see  FIG. 64 ), subject information is transferred through wireless (electromagnetic wave) communication between the electronic camera and the electronic instrument carried by a subject. In addition, a notification acknowledging the reception of the subject information may be issued from the electronic camera to the electronic instrument having transmitted the subject information to the electronic camera, and a message indicating that the subject information has been transferred may be brought up on display at the subject-side electronic instrument as well. Alternatively, the electronic instrument may issue an audio message for the subject person to notify him that the subject information has been transferred by employing a means for sound generation. 
     By adopting the features described above, the subject can verify that the subject information has been transferred. In addition, the subject provided with an audio notification can verify that the subject information has been transferred even if his electronic instrument does not include a means for display, while the electronic instrument is left in a pocket or the like. 
     In the embodiment described above (see  FIG. 66 ), the electronic camera engages in the photographing mode operation, the reproduction mode operation and the information display mode operation. However, image data may be generated through a photographing operation performed in the electronic camera, an image file may be prepared by collecting subject information and image-plane position information through wireless communication and this image file may be transferred on line or off-line to an image display apparatus other than the electronic camera, which then executes the reproduction mode operation and the information display mode operation, instead. 
     In the embodiment described above (see  FIG. 66 ), the switch over between the reproduction mode and the information display mode is achieved through a manual operation. Instead, the user may specify a given subject at a specific position within the reproduced image display through the touch tablet in the reproduction mode to bring up a display of the subject information related to this particular subject. This allows the user to check the information on the subject immediately as he becomes interested in the subject while reviewing the image data, without having to switch from the reproduction mode to the information display mode. 
     With respect to the reproduction mode and the information display mode in the embodiment described above (see  FIG. 66 ), audio data recorded with the audio recording circuit  80  during a photographing operation may be reproduced with the audio reproduction circuit  81  when reproducing the image data. In addition, a music database on the Internet may be accessed based upon the photographing time point data to download music which was popular at the time of the photographing operation and this downloaded music may be automatically reproduced as background music when reproducing the image data, as well. In this case, the user, who is reminded both visually and audibly of the time when the picture was taken, can fully enjoy the viewing experience. 
     In the embodiment described above (see  FIG. 69 ), the electronic camera does not provide the photographer with a report of the subject information collected through communication with subjects during the photographing operation. However, a list of collected subject information may be brought up on display together with the image data obtained through the photographing operation, instead. Since this allows the photographer to verify exactly what subject information was collected during the photographing operation, he is then able to take further action to collect more information if there is any missing information. 
     In the embodiment described above (see  FIG. 70 ), the electronic camera attempts wireless communication with electronic instruments present in the vicinity of the electronic camera to collect subject information during a photographing operation. The electronic camera may be set in advance so as not to engage in wireless communication with the electronic instrument carried by the photographer operating the electronic camera in this situation. Alternatively, the electronic camera may engage in wireless communication with the electronic instrument carried by the photographer during the photographing operation and record information related to the photographer collected through the wireless communication as photographer information constituting part of the photographing information data. 
     In the embodiment described above (see  FIG. 70 ), the electronic camera attempts wireless communication with electronic instruments present in the vicinity of the electronic camera to collect subject information during a photographing operation. During this process, the transmission signal output level for the wireless communication (by means of e.g. electromagnetic waves, infrared light) may be adjusted in conformance to the subject distance (the output level is raised as the distance to the subject increases). The distance to a subject can be obtained through a detection performed by a distance detection device of the known art, or the photographing distance of the photographic lens, which is manually set, may be used as the subject distance. Through this output level adjustment, the electronic camera is able to achieve communication with the electronic instrument held by a subject with a high degree of possibility , while the likelihood of achieving communication with an electronic instrument held by a party other than the subject is reduced. 
     In the embodiment described above (see  FIG. 71 ), subject information is automatically transferred to the electronic camera through a wireless communication between the electronic camera and the electronic instrument held by a subject during a photographing operation. However, when the electronic instrument receives the communication request  1  or the information request  3  from the electronic camera, the electronic instrument may notify the subject of the reception so as to determine whether or not any further communication is to be carried out in conformance to an instruction from the subject. Since the subject is given the option of refusing further communication as necessary in this manner, uncontrolled circulation of his personal information to the outside is prevented. 
     Alternatively, when the electronic instrument receives the communication request  1  or the information request  3  from an electronic camera, the electronic instrument may compare the identification number of the electronic camera having transmitted the request with the identification numbers of electronic cameras preregistered at the electronic instrument and may refuse any further communication if the electronic camera is not registered. In this case, the extent to which the personal information is allowed to circulate can be automatically controlled. 
     In the embodiment described above (see  FIG. 71 ), subject information is automatically transferred to the electronic camera through a wireless communication between the electronic camera and the electronic instrument held by a subject during a photographing operation. Instead, the subject information may be automatically transferred into the electronic camera through a wireless communication between the electronic camera and the electronic instrument held by the subject while a photographing operation is not in progress. In this case, since it is not necessary to engage in wireless communication for each of a plurality of pictures being taken without changing the composition (as in an exposure bracket photographing operation), a series of pictures can be taken quickly, and also, subject information corresponding to the plurality of sets of image data can be collected through a single wireless communication executed either automatically or manually when the photographing operation has been completed or the like. 
     In the embodiment described above (see  FIG. 71 ), subject information is automatically transferred to the electronic camera through a wireless communication between the electronic camera and the electronic instrument held by a subject, which is carried on at all times during a photographing operation. However, the wireless communication operation for subject information collection may be disallowed to prevent a delay in the photographing operation. For instance, when a continuous photographing (continuous shooting) operation is performed with the electronic camera, wireless communication may be automatically disallowed to prevent a significant lag between continuously photographed image frames due to the wireless communication operation. 
     In the embodiment described above (see  FIG. 73 ), information indicating the position of a subject within the image plane is calculated by using the electronic camera attitude information and the positional measurement information for the electronic camera and the electronic apparatus obtained through the GPS units. However, the image plane subject position information may be detected through another method. For instance, if the electronic camera and the electronic instrument held by a subject engage in communication with each other by using infrared light, the position of the electronic instrument within the image plane may be specified by detecting the light-receiving position on a two-dimensional infrared light image-capturing element provided at the electronic camera based upon the image data captured at the image-capturing element. Alternatively, the image-plane position information alone may be obtained by detecting the position of a point light source of infrared light originating from the electronic instrument with a two-dimensional infrared light image-capturing element, and the subject information may be obtained through a wireless communication (electromagnetic waves). In such a case, the infrared point light source should be turned on with the timing with which the electronic instrument engages in wireless communication. 
     In the embodiment described above (see  FIG. 80 ), the subject information corresponding to a position at which the user touches the screen is accessed on the Internet and is brought up on display in the information display mode. However, the Internet does not always need to be accessed, and if sufficient subject information has been collected during the photographing information, such subject information alone may be brought up on display at the screen. Since this eliminates the need to access the Internet to display subject information, a prompt subject information display is achieved, thereby reducing the stress of the user as he no longer needs to wait a long time for the subject information to come up on display for review. 
     In the embodiment described above (see  FIG. 81 ), image data having been photographed in a predetermined photographic image plane size are reproduced and displayed in a size matching the display screen size and the subject information corresponding to a position on the display screen specified by the user is brought up on display at the display screen in the information display mode. However, the sizes of the photographic image plane and the display screen do not necessarily need to match each other, and the photographic image plane may be displayed either in an enlargement or in a reduction on the display screen, instead. In addition, the image data may be modified, rotated or the like for display at the display screen. If the photographic image plane size and the display screen size do not match, the coordinates of a position specified on the display screen are converted to positional coordinates on the photographic image plane (through enlargement, reduction, shifting, rotation or the like) and the subject information is displayed based upon the positional coordinates resulting from the conversion. Since this eliminates the need to ensure that the shape of the photographic image plane and the shape of the display screen are congruent with each other, it becomes possible to utilize various types of image display apparatus in the information display mode and to specify a desired subject by enlarging the image at the display screen if multiple subjects are present in close proximity to one another in the image. 
     In the embodiment described above (see  FIG. 82 ), the electronic camera includes two display screens, at one of which subject information is displayed with the image data obtained by subjects displayed (as a thumbnail image) at the other screen in the information display mode. However, if the electronic camera has only one screen, the subject information may be displayed over the entire screen with a superimposed display of the image data containing the subjects brought up over part of the screen. As this allows simultaneous review of the subject information and the corresponding image data, the user can intuitively understand the relationship between the subject information and the image data even when the electronic camera has a single display screen. 
     In the second embodiment described above, information related to a subject, which is made to correlate to a subject position within the image plane, is appended to the electronic image data for storage, and the subject-related information is brought up on display in correspondence to the subject position within the image plane when the electronic image data are reproduced and displayed. As a result, information related to a subject photographed in an image, which interests the user reviewing reproduced electronic image data on display, can be quickly and easily reviewed in connection with the reproduced display of the electronic image data. 
     Third Embodiment 
     The third embodiment of the present invention is now explained in reference to the drawings.  FIG. 98  is a conceptual diagram of the third embodiment of the present invention. An electronic camera photographs subjects within the photographing range, assigns a file name to image data obtained through the photographing operation, connects with an image server on the Internet and uploads the image data into a specific folder at the image server. In addition, the electronic camera transmits address information (the Internet address of the image server is equivalent to URL (Uniform Resource Locator), the folder name and the image data file name at the image server) to electronic instruments (such as portable telephones) carried by the subjects in the vicinity of the camera through short-distance wireless communication. The electronic instrument (such as a portable telephone) carried by a subject connects to the image server on the Internet based upon the information received from the electronic camera through short-distance wireless communication and displays at its screen the image data downloaded from the specific folder at the image server. 
       FIG. 99  is a conceptual diagram of an information transmission system achieved by utilizing an electronic camera, an image server and a portable telephone terminal adopting the present invention. In  FIG. 99 , an electronic camera  100  photographs a subject present within its photographic range and generates electronic image data or digital image data (hereafter referred to as “image data”). The electronic camera  100  having a wireless telephone function is capable of connecting with a public telephone line network  140  via a base station  120  through a wireless portable telephone line  190 . The public telephone line network  140  is also connected with the Internet  130  to allow the electronic camera  100  to connect with an image server  150  accessible via the Internet  130 . The image server  150  having a large capacity memory for saving image data saves image data uploaded via the Internet  130  into folders set in correspondence to individual users and downloads specified image data via the Internet  130  if a read request is issued from an external partner via the Internet  130 . By connecting with the image server  150 , the electronic camera  100  uploads and saves image data into a specific folder. 
     In addition, the electronic camera  100  has a short-distance wireless communication function such as Bluetooth (registered trademark) and transfers identification data (URL) of the image server to which image data have been uploaded, folder identification data (folder name) and image data identification data (filename) to a portable telephone terminal  160  through communication achieved via a short-distance wireless line  180  with the portable telephone  160  having a matching short-distance wireless communication function. The portable telephone  160  is assumed to be carried by a person who is the subject of a photographing operation executed with the electronic camera  100 , and a UIM card (user identity module card)  170  having stored therein user personal information at which image data can also be stored is loaded at the portable telephone  160 . 
     The portable telephone  160  having a wireless telephone function is capable of connecting with public telephone line network  140  through the wireless portable telephone line  190 . The public telephone line network  140  is also connected with the Internet  130  and thus allows the portable telephone  160  to connect with the image server  150  installed on the Internet  130 . By connecting with the image server  150 , the portable telephone  160  downloads the image data in the specific folder, saves the image data into the UIM card  170 , and also displays the downloaded image data at its screen. 
     It is to be noted that Bluetooth refers to a mobile communication technology (for portable electronic instruments) with a low transmission output for short-distance communication, which covers a short-range of approximately 10 m by using wireless electromagnetic waves in the 2.45 GHz band and realizes a one-on-one or multiple-partner connection at a transfer rate of 1M bps. 
       FIGS. 100 and 101  present external views (a front view and a rear view) of an embodiment of the electronic camera  100  in  FIG. 99 . As shown in  FIG. 100 , at the front surface of the electronic camera  100 , a photographic lens  10  which forms a subject image, a viewfinder  11  used to check the photographic image plane, a strobe  12  used to illuminate the subject during a photographing operation, a photometering circuit  13  that detects the brightness of the subject and a grip portion  14  that projects out from the camera main body to allow the electronic camera  100  to be held by hand are provided, whereas a shutter release button  16  operated to issue an instruction for a photographing start and a power switch  17  (a momentary switch which is alternately set to on and off each time it is operated) through which the on/off state of the power to the electronic camera  100  is controlled are provided at the upper surface. 
     As shown in  FIG. 101 , at the rear surface of the electronic camera  100 , an eyepiece unit of the viewfinder  11 , a left LCD (left screen)  21  having a substantially quadrangular screen for text and image display and a right LCD (right screen)  22  having a substantially quadrangular screen for text and image display are provided, and an up button  23  and a down button  24  for scrolling the image displayed at the left screen  21  are provided in the vicinity of, and to the left of the left screen  21 , whereas a photographing mode button  25  operated to set the electronic camera  100  in a photographing mode, a reproduction mode button  26  operated to set the electronic camera  100  in a reproduction mode, a PRINT button  27  operated to print image data, a SEND button  28  operated to transmit image data and a DOWNLOAD button  29  operated to download image data are provided around the right screen  22  and the left screen  21 . An upload dial  32  is an operating member rotated to select an image server to which specific image data are to be uploaded and as it is rotated, the image server corresponding to the number at the position of a dot  31  is selected. At a side surface, a memory card slot  30  at which a memory card  77  can be loaded is provided. 
     It is to be noted that the shutter release button  16 , the up button  23 , the down button  24 , the photographing mode button  25 , the reproduction mode button  26 , the PRINT button  27 , the SEND button  28 , the DOWNLOAD button  29  and the upload dial  32  are all operating keys operated by the user. 
     It is also to be noted that over the surfaces of the left screen  21  and the right screen  22 , so-called touch screens  66  having a function of outputting position data corresponding to a position indicated through a finger contact operation are provided, and they can be used to make a selection from selection items or make an image data selection on the screens. The touch screens  66  are each constituted of a transparent material such as a glass resin so that the user can observe images and text formed inside the touch screens  66  through the touch screens  66 . 
       FIG. 102  presents an example of an external view (front view) of the portable telephone  160  shown in  FIG. 99 . As shown in  FIG. 102 , the portable telephone  160  includes a display screen  161 , operating keys  162  and a UIM card loading slot  163 . 
     In the block diagram in  FIG. 103 , which presents an example of an internal electrical structure to be positioned assumed in the electronic camera  100  shown in  FIGS. 100 and 101 , various components are connected with one another via a data/control bus  51  through which various types of information data and control data are transmitted. The components are divided into the following five primary blocks, i.e., (1) a block, the core of which is a photographing control circuit  60  that executes an image data photographing operation, (2) a block, the core of which is constituted of wireless communication circuit  710  that communicates with electronic instruments in the vicinity of the electronic camera  100  through short-distance wireless communication (Bluetooth or the like) and a wireless telephone circuit  720  that exchanges data with the outside through a wireless portable telephone line, (3) a block constituted of the memory card  77  in which image files are stored and saved, (4) a block, the core of which is a screen control circuit  92  that executes display of image data and information related to the image data and (5) a block, the core of which is constituted of user interfaces such as operating keys  65  and a CPU  50  that implements integrated control on various control circuits. 
     The CPU  50  (central processing unit), which is a means for implementing overall control on the electronic camera  100 , issues various instructions for the photographing control circuit  60 , the wireless communication circuit  710 , the wireless telephone circuit  720 , the screen control circuit  92  and a power control circuit  64  in conformance to information input from the operating keys  65 , the touch screen  66 , the power switch  17 , a timer  74  and the photometering circuit  13 . The photometering circuit  13  measures the brightness of the subject and outputs photometric data indicating the results of the measurement to the CPU  50 . In conformance to the photometric data, the CPU  50  sets the length of the exposure time and the sensitivity of a CCD  55  through a CCD drive circuit  56 , and in addition, it controls the aperture value for an aperture  53  with an aperture control circuit  54  via the photographing control circuit  60  in conformance to the data indicating the settings. 
     In the photographing mode, the CPU  50  controls the photographing operation via the photographing control circuit  60  in response to an operation of the shutter release button  15 . In addition, if the photometric data indicate a low subject brightness, the CPU  50  engages the strobe  12  in a light emission operation via a strobe drive circuit  73  during the photographing operation. The timer  74  having an internal clock circuit detects information indicating a current time point and provides the photographing time point information to the CPU  50  during the photographing operation. The CPU  50  controls the various units in conformance to a control program stored in a ROM  67  (read only memory). In an EEPROM  68  (electrically erasable/programmable ROM), which is a nonvolatile memory, the setting information and the like necessary for the operations of the electronic camera  100  are stored. A RAM  70  which is a volatile memory is used as a work area of the CPU  50 . The CPU  50  implements control on a power supply  63  via the power control circuit  64  by detecting the operating state of the power switch  17 . 
     The photographing control circuit  60  focuses or zooms the photographic lens  10  through the lens drive circuit  52 , controls the exposure quantity at the CCD  55  through control implemented on the aperture  53  by engaging the aperture control circuit  54  and thus controls the operation of the CCD  55  through a CCD drive circuit  56 . The photographic lens  10  forms a subject image onto the CCD  55  with a light flux from the subject via the aperture  53  which adjusts the light quantity and this subject image is then captured by the CCD  55 . The CCD  55  (charge-coupled device) having a plurality of pixels is a charge storage type image sensor that captures a subject image, and outputs electrical image signals corresponding to the intensity of the subject image formed on the CCD  55  to an analog processing unit  57  in response to a drive pulse supplied by the CCD drive circuit  56 . 
     The photographing control circuit  60  repeatedly executes the operation described above and the screen control circuit  92  repeatedly executes an operation in which the digital data sequentially stored into the photographic buffer memory  59  are read out via the data/control bus  51 , the digital data thus read out are temporarily stored into a frame memory  69 , the digital data are converted to display image data and are restored into the frame memory  69  and the display image data are displayed at the left screen  21 . In addition, the screen control circuit  92  obtains text display information from the CPU  50  as necessary, converts it to display text data which are then stored into the frame memory  69  and displays the display text data at the left screen  21  and the right screen  22 . Since the image currently captured by the CCD  55  is displayed at the left screen  21  in real time in the photographing mode in this manner, the user is able to set the composition for the photographing operation by using this through screen as a monitor screen. The photographing control circuit  60  detects the state of the focal adjustment at the photographic lens  10  by analyzing the degree of the high-frequency component of the digital data stored in the photographic buffer memory  59  and performs a focal adjustment for the photographic lens  10  with the lens drive circuit  52  based upon the results of the detection. 
     During a photographing operation, upon receiving a photographing instruction from the CPU  50 , the photographing control circuit  60  engages the CCD  55  to capture a subject image via the CCD drive circuit  56  and temporarily stores image signals generated through the image-capturing operation as digital data (raw data) into the photographic buffer memory  59  via the analog processing unit  57  and the A/D conversion circuit  58 . The photographing control circuit  60  then generates image data by converting or compressing the digital data stored in the photographic buffer memory  59  on a temporary basis in a predetermined recording format (such as JPEG) and stores the image data back into the photographic buffer memory  59 . 
     The CPU  50  engages the wireless telephone circuit  720  to wirelessly output the image data through an antenna  76  and thus uploads the image data into the folder at the image server on the Internet. It also engages the wireless communication circuit  710  to wirelessly output the identification data of the image server to which the image data have been uploaded, the folder identification data and the image data identification data through an antenna  75 . Subsequently, the CPU  50  converts the image data stored in the photographic buffer memory  59  to save them as reduced image data (hereafter referred to as “thumbnail image data”) with a smaller data volume and stores the thumbnail image data appended with the related information (the image server identification data, the folder identification data and the image data identification data), into the memory card  77 . 
     In the reproduction mode, the screen control circuit  92  reads out thumbnail image data specified by the CPU  50  from the memory card  77 , temporarily stores the thumbnail image data thus read out into the frame memory  69  and displays the thumbnail image data at the left screen  21 . It also stores text data such as reproduction mode instructions into the frame memory  69  and displays the text data at the right screen  22 , in response to an instruction issued by the CPU  50 . If the PRINT button  27  is operated in the reproduction mode, the CPU  50  executes an operation for having the image data corresponding to the reproduced thumbnail image data printed on a printer. If, on the other hand, the SEND button is operated in the reproduction mode, the CPU  50  executes an operation for having the image data corresponding to the reproduced thumbnail image data transmitted to a recipient electronic instrument. 
     In addition, if the DOWNLOAD button  29  is operated in the reproduction mode, the CPU  50  downloads the image data corresponding to the reproduced thumbnail image data from image server through the wireless telephone circuit  720  and sets the downloaded image data into the frame memory  69 . The screen control circuit  92  converts the image data set in the frame memory  69  to display image data, stores the display image data back into the frame memory  69  and displays the display image data at the left screen  21 . 
     In  FIG. 104  presenting a block diagram of an example of an electrical structure that may be adopted in the portable telephone  160  shown in  FIG. 102 , various components are connected around a CPU  151  at their center. The CPU  151  (central processing unit), which is a means for implementing overall control on the portable telephone  160 , controls a wireless communication circuit  171 , a wireless telephone circuit  172 , a display screen  161  and a power source  163  in conformance to information input through the operating keys  162 , a touch screen  166 , a power switch  117  and a timer  174 . In a talk mode, the CPU  151  converts sound input through a microphone  164  to audio data and outputs the audio data in a wireless transmission to the outside through an antenna  176  by engaging the public telephone line network  172  and reproduces through a speaker  165  audio data received from the outside at the wireless telephone circuit  172  via the antenna  176 . 
     In an Internet mode, the CPU  151  engages the antenna  175  and the wireless communication circuit  171  to exchange information related to image data with the electronic camera  100  through short-distance wireless communication and, based upon related information (the image server identification data, the folder identification data and the image data identification data) thus obtained, it connects with the image server on the Internet via the public telephone circuit  172 , downloads the desired image data, displays an image reproduced from the image data at its display screen and saves the image data into a UIM card or a flash memory  168 . 
     The CPU  151  controls the various components in conformance to a control program stored in a ROM  167  (read only memory). In the flash memory  168  (electrically erasable programmable memory) which is a nonvolatile memory, image data and the like are stored. A RAM  169  is a volatile memory which is used as a work area of the CPU  151 . The CPU  151  controls the power source  163  by detecting the operating state of the power switch  117 . 
       FIG. 105  shows the relationship between the numbers set at the upload dial  32  of the electronic camera  100  shown in  FIG. 101  and the image servers that are upload t recipients. As shown in  FIG. 105 , numbers  1 ,  2 ,  3  and  4  respectively correspond to image servers W, X, Y and Z. 
       FIG. 106  shows the structure of the data stored in the memory card  77 . As shown in  FIG. 106 , a plurality of image files are saved in the memory card  77 . Each image file is constituted of thumbnail image data and additional information data. The additional information data is constituted of photographing information data (see  FIG. 107 ) indicating the various settings selected for the photographing operation and upload information data obtained when the image data are uploaded to an image server. The upload of information data include date/time data indicating the date and time point at which the image data were uploaded to the image server, the image server identification data (upload destination (location) URL), the folder name, the file name, the volume of the image data, the format adopted in recording the image data and the like. 
     In  FIG. 107  showing the structure of the photographing information data, the photographing information data are constituted of photographing date/time point data and setting information data related to the photographic lens setting and the camera settings selected for the photographing operation. 
       FIG. 108  is a transition diagram for the state of the electronic camera according to the embodiment of the present invention. The electronic camera  100 , which may be set in either of the photographing mode or the reproduction mode, shifts from one mode to the other in response to an operation of one of two operating buttons (the photographing mode button  25  and the reproduction mode button  26 ). As the power is turned on, the electronic camera first shifts to the photographing mode. In the photographing mode, the electronic camera executes a photographing operation, an upload operation to upload the image data to an image server, an operation for converting the image data to thumbnail image data and then storing the thumbnail image data into the memory card  77 , and a short-distance wireless communication operation for communicating with a portable telephone. In the reproduction mode, it executes a reproducing operation for reproducing the thumbnail image data, a download operation for downloading image data from an image server, a transmission operation for transmitting the image data to a portable telephone and a print operation for printing the image data on the printer. 
       FIG. 108  presents a flowchart of the main flow of the operations executed in the electronic camera  100  (the CPU  50 ) in the embodiment described above. First, as the power switch  17  is operated, the power is turned on in S 10 , and then, a photographing mode subroutine is executed in S 20  thereby setting the electronic camera in a photographing-enabled state. If the shutter release button  16  is operated in the photographing mode, a release interrupt processing subroutine in S 30  is executed to perform a photographing operation. In addition, the image data obtained through the photographing operation are uploaded into an image server on the Internet specified with the upload dial  32  through a wireless telephone line, the image data are also converted to thumbnail image data and stored into the memory card  77 , and information with regard to the image data upload is automatically transmitted to the portable telephone  160  carried by a subject in the vicinity of the electronic camera  100  through short-distance wireless communication. 
     In addition, if either of the two operating buttons (the photographing mode button  25  and the reproduction mode button  26 ) is operated while the electronic camera is set in the other operating mode, then mode switching interrupt processing in S 50  is started up to switch over to a mode corresponding to the operating button that has been operated. 
     In the reproduction mode in S 60 , an image file saved in the memory card  77  is read out and the thumbnail image data are reproduced and displayed at the display screen, and as the SEND button  28  is operated, a transmission interrupt processing subroutine in S 70  is executed to transmit information with regard to the upload of the image data corresponding to the selected thumbnail image data to the portable telephone  160  carried by the subject present in the vicinity of the electronic camera  100  through short-distance wireless communication. The portable telephone  160 , in turn, automatically connects with the image server on the Internet based upon the information received from the electronic camera  100  and downloads the image data which are then displayed at the screen and saved into the UIM card. 
     If the PRINT button  27  is operated in the reproduction mode, a print interrupt processing subroutine in S 80  is executed to transmit the information related to the upload of the image data corresponding to the selected thumbnail image data to a printer present in the vicinity of the electronic camera  100  through short-distance wireless communication, and the printer, in turn automatically connects with the image server on the Internet based upon the information received from the electronic camera  100 , downloads the image data and then executes a printing operation. 
     If the DOWNLOAD button  29  is operated in the reproduction mode, a download interrupt processing subroutine S 90  is executed to download through a wireless telephone line the image data corresponding to the selected thumbnail image data from the image server at which the image data have been uploaded and the downloaded image data are reproduced and displayed at the display screen. 
     In the detailed flowchart of the photographing mode subroutine presented in  FIG. 110 , after the subroutine is started up in S 20 , the processing in S 201  is repeatedly executed. In S 201 , image data sequentially generated by the CCD  55  in conformance to the photographing condition set by the user are displayed at the left screen  21  as shown in  FIG. 111  and the condition is also displayed as a list at the right screen  22 . 
     In the detailed flowchart of the release interrupt processing subroutine presented in  FIG. 112 , after the subroutine is started up in S 30 , a verification is achieved in S 301  as to whether or not the camera is currently set in the photographing mode and, if it is decided that the camera is not set in the photographing mode, the operation makes a return in S 311 . If, on the other hand, it is decided that the camera is set in the photographing mode, an image-capturing operation is executed in conformance to the photographing setting condition selected by the user to generate image data in S 302  and then in S 303 , the image data are converted to thumbnail image data and the thumbnail image data appended with the upload information data are stored into the memory card  77  as an image file. Then, in S 304 , a wireless communication with an electronic instrument (a portable telephone carried by a subject person) present in the vicinity of the electronic camera  100  is attempted through the means for wireless communication  710 . At this time, the signal transmission output for the wireless communication is adjusted in conformance to the focal length of the photographic lens  10 . For instance, the signal transmission output level is raised as the focal length increases, since a subject is deduced to be present over a greater distance in such a case. If it is decided in S 305  that no communication has been achieved, the operation makes a return in S 311 . If, on the other hand, it is decided that communication has been achieved, the image data upload information is transmitted to the electronic instrument of the communication partner with whom communication has been achieved in S 306 . In S 307 , a display of the image data obtained through the photographing operation is started. 
     In S 308 , the image data are uploaded into a specific folder (a folder inherent to the photographer or the electronic camera  100 ) at the image server specified through the upload dial  32 . Once the image data upload is completed, a notification of the image data upload completion is transmitted to the electronic instrument in the vicinity of the electronic camera  100  through the means for wireless communication  710  in S 309 . In S 310 , the image data display ends and then the operation makes a return in S 311  to start a through image display in the photographing mode again. 
     In the sequence diagram presented in  FIG. 113  to facilitate an explanation of the wireless communication operation between the electronic camera and an electronic instrument (a portable telephone) executed during the release interrupt processing, a photographing operation is executed in response to a shutter release operation performed at the electronic camera  100 , and then the image data are converted to thumbnail image data which are saved. Next, the electronic camera  100  attempts a wireless search communication  1  with an electronic instrument in the vicinity. In the search communication  1 , the identification information of the electronic camera  100  indicating a sender is transmitted. 
     An electronic instrument having received the search communication  1  returns a response  2  to the electronic camera  100  in response, through which the identification information of the sender electronic instrument and the identification information of the recipient electronic camera are transmitted. 
     Upon receiving the response  2 , the electronic camera  100  verifies the communication partner based upon the electronic instrument identification information, and also executes an information transmission  3  to transmit the upload information to the specific communication partner&#39;s electronic instrument. Through the information transmission  3 , the identification information of the recipient electronic instrument, the identification information of the sender electronic camera  100 , the upload information, the thumbnail image data and the like are transmitted. 
     The electronic instrument corresponding to the electronic instrument identification information transmitted through the information transmission  3  executes an information transmission  4  to the electronic camera  100  in response. Through the information transmission  4 , the identification information of the recipient electronic camera  100 , the identification information of the sender electronic instrument and related information which includes specific image server information originating from the electronic instrument) are transmitted. 
     Upon receiving the information  4  transmitted by the electronic instrument, the electronic camera  100  uploads the image data to the image server on the Internet through a wireless telephone line. Once the image data upload is completed, the electronic camera  100  transmits an upload completion notification  5  to the electronic instrument. The electronic instrument having received this notification connects with the image server on the Internet through a wireless telephone line based upon the upload information received through the information transmission  3 , and downloads and utilizes the specified image data. 
     It is to be noted that if the response  2  is returned by a plurality of electronic instruments, the electronic camera  100  may either execute the information transmission  3  through a simultaneous one-to-multiple partner communication with the electronic instruments or may individually execute the information transmission  3  through a one-to-one communication with each electronic instrument. In the latter case, the information transmission  4  must be executed a plurality of times. 
     In the detailed flowchart of the mode switching interrupt processing subroutine presented in  FIG. 114 , which is started up in response to an operation of an operating button (the photographing mode button  25  or the reproduction mode button  26 ), after the subroutine is started up in S 50 , a verification is achieved in S 501  as to whether or not the operated button is the photographing mode button  25 , and if it is decided that the photographing mode button  25  has been operated, the operation shifts to the photographing mode subroutine in S 20 . If, on the other hand, it is decided that the photographing mode button  25  has not been operated, the operation shifts to the reproduction mode subroutine in S 60 . 
     In the detailed flowchart of the reproduction mode subroutine presented in  FIG. 115 , after the subroutine is started up in S 60 , the processing in S 601  is repeatedly executed. In S 601 , thumbnail image data in image files stored in the memory card  77  are sequentially read out starting with the data photographed most recently, and are reproduced and displayed at the left screen  21  while concurrently displaying relevant operational instructions at the right screen  22 , as shown in  FIG. 116 . The thumbnail image data displayed at the left screen  21  are scrolled in response to an operation of the direction button  23  or  24 . It is to be noted that in the reproduction mode, one of the plurality of sets of thumbnail image data displayed at the left screen  21  is selected by the user through the touch screen  66 , and the thumbnail image data thus selected subsequently undergo a transmission operation, a print operation or a download operation as described later. 
     In the detailed flowchart of the transmission interrupt processing subroutine presented in  FIG. 117 , after the subroutine is started up in S 70 , a verification is achieved in S 701  as to whether or not the electronic camera is currently set in the reproduction mode, and if it is decided that the electronic camera is not set in the reproduction mode, the operation makes a return in S 707 . If, on the other hand, it is decided that the electronic camera is set in the reproduction mode, a wireless communication with an electronic instrument in the vicinity of the electronic camera  100  is attempted at the signal transmission output level through the means for wireless communication  71  in S 702 . If it is decided in S 703  that no communication has been achieved, the operation makes a return in S 707 . If, on the other hand, it is decided that communication has been achieved, the electronic instruments with which communication has been achieved are displayed at the right screen  22  as possible image data recipients in S 704  to allow the user of the electronic camera  100  to select the desired recipient through the touch screen  66 , as shown in  FIG. 118 . In S 705 , the operation waits in standby for the SEND button  28  to be operated again, and if the SEND button  28  is operated, the image data upload information is transmitted to the selected recipient through short-distance wireless communication in S 706  before the operation makes a return in S 707 . 
     In the sequence diagram presented in  FIG. 119  to facilitate an explanation of the wireless communication operation between the electronic camera and an the electronic instrument (portable telephone) executed during the transmission interrupt processing, the image data to be transmitted are first selected at the electronic camera  100 . Then, as the SEND button  28  is operated, a wireless search communication  1  with electronic instruments present within the vicinity is attempted by the electronic camera  100 . Through the search communication  1 , the identification information of the sender electronic camera  100  is transmitted. 
     Each electronic instrument having received the search communication  1  returns a response  2  to the electronic camera  100  in response by transmitting the identification information of the sender electronic instrument and the identification information of the recipient electronic camera. 
     The electronic camera  100  having received the response  2  verifies the communication partners with whom the communication has been achieved based upon the electronic instrument identification information and selects a recipient. Next, it reads out the upload information corresponding to the selected image data from the memory card  77 . As the SEND button  28  is operated again, the electronic camera  100  executes an information transmission  3  to transmit the upload information to the specific electronic instrument carried by the selected recipient. Through the information transmission  3 , the identification information of the selected recipient&#39;s electronic instrument, the identification information of the sender electronic camera  100 , the upload information, the thumbnail image data and the like are transmitted. 
     The selected recipient&#39;s electronic instrument having received the information  3  connects with the image server on the Internet through a wireless telephone line based upon the upload information, and downloads and displays the specified image data. 
     In the detailed flowchart of the print interrupt processing subroutine presented in  FIG. 120 , after the subroutine is started up in S 80 , a verification is achieved in S 801  as to whether or not the electronic camera is currently set in the reproduction mode, and if it is decided that the electronic camera is not set in the reproduction mode, the operation makes a return in S 807 . If, on the other hand, it is decided that the electronic camera is set in the reproduction mode, short-distance wireless communication with any printer in the vicinity of the electronic camera  100  is attempted at the signal transmission output level through the means for wireless communication  710  in S 802 . If it is decided in S 803  that no communication has been achieved, the operation makes a return in S 807 . If, on the other hand, it is decided that communication has been achieved, the printers with which communication has been achieved are displayed at the right screen  22  in S 804  to allow the user of the electronic camera  100  to select the desired printer through the touch screen  66 , as shown in  FIG. 121 . In S 805 , the operation waits, in standby state, for the SEND button  28  to be operated again and if the PRINT button  27  is operated, the image data upload information and a print instruction are transmitted to the selected printer through short-distance wireless communication in S 806  before the operation makes a return in S 807 . 
     In the sequence diagram presented in  FIG. 122  to facilitate an explanation of the wireless communication operation between the electronic camera and a printer executed during the print interrupt processing, the image data to be transmitted are first selected at the electronic camera  100 . Then, as the PRINT button  27  is operated, a wireless printer search communication  1  with any printer within the vicinity is attempted by the electronic camera  100 . Through the printer search communication  1 , the identification information of the sender electronic camera  100  and function identification information (“printer” in this case) indicating the function of electronic device with which the electronic camera-side wishes to communicate are transmitted. 
     A printer having received the printer search communication  1  returns a response  2  to the electronic camera  100  in response by transmitting the identification information of the sender printer, the identification information of the recipient electronic camera and printer specification information and the like. 
     The electronic camera  100  having received the response  2  verifies all the communication partners with whom communicate has been achieved based upon the printer identification information and selects a desired printer. Next, it reads out the upload information corresponding to the selected image data from the memory card  77 . As the PRINT button  27  is operated again, the electronic camera  100  executes an information transmission  3  to transmit the upload information to the specific selected printer. Through the information transmission  3 , the identification information of the selected printer, the identification information of the sender electronic camera  100 , the upload information, the print instruction information and the like are transmitted. 
     The selected printer having received the information  3  connects with the image server on the Internet through a wireless telephone line based upon the upload information, downloads the specified image data, converts the image data to image data for printing based upon the print instruction information and executes a printing operation. 
     The conceptual diagram presented in  FIG. 123  illustrating a mode of the information transmission among the electronic camera, a printer and the image server executed during the print interrupt processing described above, the electronic camera uploads image data obtained through a photographing operation to the image server on the Internet through a wireless telephone line. Next, the electronic camera transmits image data the upload information (the image server&#39;s Internet address is equivalent to URL (Uniform Resource Locator), the folder name and the image data filename at the image server) and control information (the print instruction information) an electronic device (printer) within a short-distance wireless communication range through short-distance wireless communication. Based upon the information received from the electronic camera through the short-distance wireless communication, the electronic device (printer) connect with the image server on the Internet through a wireless telephone line, downloads the image data from the specific folder at the image server and executes an operation (printing processing) on the downloaded image data based upon the control information (print instruction information). 
     In the detailed flowchart of the download interrupt processing subroutine presented in  FIG. 124 , after the subroutine is started up in S 90 , a verification is achieved in S 901  as to whether or not the electronic camera is currently set in the reproduction mode and, if it is decided the electronic camera is not set in the reproduction mode, the operation makes a return in S 905 . If, on the other hand, it is decided that the electronic camera is set in the reproduction mode, the image server on the Internet is connected through the wireless telephone circuit  720  based upon the upload information data appended to the selected thumbnail image data to download the image data corresponding to the selected thumbnail image data in S 902 . In S 903 , the downloaded image data are reproduced and displayed at the left screen  21 , as shown in  FIG. 125 . In S 904 , the operation waits in standby for the DOWNLOAD button  29  to be operated again, and if the DOWNLOAD button  29  is operated, the operation makes a return in S 905 . 
       FIG. 126  illustrates the structure of the wireless communication circuit  710  in the electronic camera. The wireless communication circuit  710  is enclosed by an electromagnetic shield film  79  along the camera rear surface (in the direction opposite from the direction along which the photographic optical axis extends, i.e., the side on which the photographer is present), the camera lower surface, the camera upper surface and the camera left and right side surfaces. Thus, the wireless communication circuit  710  is allowed to communicate readily with the portable telephone  160  carried by a subject present in the direction along which the photographing operation is performed with the camera and since it cannot readily communicate with a portable telephone or an electronic device carried by a non-subject party who is not present along the photographic optical axis. Thus, the image data recipient can be limited to the portable telephone carried by the subject who has been photographed. In  FIG. 127  shows the communication directivity of the wireless communication circuit  710 , and extreme directivity manifests to the front of the electronic camera  100  (along the optical axis  40 ) and little directivity to the rear. 
     By allowing the wireless communication circuit  710  to manifest extreme directivity along the direction in which the photographing operation is performed with the camera through the structure shown in  FIG. 126  as described above, the likelihood of communicating with the electronic instrument carried by the subject is increased. It is to be noted that the directivity may be adjusted by adopting a specific antenna structure instead of by using an electromagnetic shield film. A compact directional antenna that may be adopted is disclosed, for instance, in Japanese Laid-Open Patent Publication No. 2000-278037. 
     In addition, the directivity of the wireless communication circuit  710  may be adjusted in conformance to the focal length of the photographic lens. For instance, the communication directivity should be reduced if the focal length is small since the photographic field angle will be wide in such a case, whereas the communication directivity should be increased if the focal length is larger since the photographic field angle will be narrow in such a case. The directivity of the wireless communication circuit  710  may be adjusted by mechanically moving the electromagnetic shield film or by selectively using one of a plurality of directional antennas with varying directional characteristics. By implementing such an adjustment, the likelihood of the electronic camera  100  achieving communication with an electronic instrument held by a photographed subject is increased without allowing ready communication with an electronic instrument carried by a party other than the subject. 
     In the conceptual diagram of the embodiment of the present invention presented in  FIG. 92 , the electronic camera uploads image data obtained through a photographing operation to an image server on the Internet, and an electronic instrument (such as a portable telephone) carried by a subject connects with the image server on the Internet based upon related information received from the electronic camera through short-distance wireless communication and displays at its screen the image data downloaded from a specific folder at the image server. As a variation, the electronic camera may obtain upload information (indicating an image server on the Internet, a folder name and an image data filename specified by the electronic instrument-side) from the electronic instrument during the short-distance wireless communication with the electronic instrument carried by the subject and upload the image data obtained through a photographing operation, appended with the filename specified by the electronic instrument into the specified folder at the specified image server on the Internet based upon the upload information. In this case, the electronic instrument downloads the image data assigned with the specified file name from the specified folder of the image server specified by itself. 
     This variation relieves the subject from a task of saving the downloaded image data into his own image server. 
     In addition, the location at which an image is to be saved (a specific folder at a specific image server) may be specified by the electronic instrument and a specific image data file name may be assigned by the electronic camera. Alternatively, the electronic camera may specify an image server and a folder, and the electronic instrument may assign a specific in image data filename. 
     In addition, as shown in  FIG. 128 , the electronic camera may obtain upload information (indicating an image server on the Internet, a folder name and an image data file name) specified by the electronic-instrument-side from an electronic instrument carried by a subject during the short-distance wireless communication with the electronic instrument and transmit the upload information obtained from the electronic instrument together with image data obtained through a photographing operation to a preassigned image server on the Internet so as to enable the preassigned server to transmit the received image data, appended the specified file name, into the specified folder at the specified image server on the Internet, instead. Also in this case, the electronic instrument can download the image data assigned with the specified file name from the specified folder on the image server specified by itself. 
     In the embodiment described above (see  FIGS. 98 and 113 ), short-distance communication between the electronic camera and a portable instrument carried by a subject is executed while obtaining image data through a photographing operation, or either immediately before or after the photographing operation, to automatically transfer the image data upload information to the portable instrument, which eliminates the need for performing a special operation such as manually writing down the upload information and also ensures that the image data upload information is transmitted to the portable instrument of a person highly likely to be a subject photographed in the image data. 
     In the embodiment described above (see  FIGS. 98 and 113 ), image data are not directly exchanged between the electronic camera used to obtain the image data through a photographing operation and the portable telephone which is the ultimate recipient of the image data and as a result, the electronic camera does not need to adjust the image data in conformance to various image display specifications of different portable telephones or to engage in communication with the individual portable telephones over an extended period of time in order to transfer the image data to multiple users. Thus, the onus placed on the electronic camera is reduced. 
     In the embodiment described above (see  FIGS. 98, 123 and 128 ), image data upload information is exchanged between the electronic camera and an electronic instrument through short-distance wireless communication. As a result, the likelihood of communicating with limited partners such as a portable telephone carried by a subject and a printer in the vicinity of the electronic camera is increased and, at the same time, the likelihood of communicating with an irrelevant electronic instrument present at a large distance from the electronic camera is practically eliminated. In addition, since the signal transmission output level for the wireless communication is adjusted in conformance to the focal length of the photographic lens, a reliable wireless communication with a subject is achieved while reducing the likelihood of wirelessly communicating with a party other than the subject. 
     In the embodiment described above (see  FIGS. 98, 123 and 128 ), image data upload information is exchanged between the electronic camera and an electronic instrument through short-distance wireless communication. Since the short-distance wireless communication is achieved at a lower information transmission rate than that of a wireless portable telephone line, the structure of the short-distance wireless communication circuit can be simplified, thereby making it possible to reduce the cost of the electronic camera and the cost of the portable telephone and also to reduce their sizes. 
     In the embodiment described above (see  FIGS. 98, 128 ), the electronic camera which only needs to upload image data obtained through a photographing operation to an image server on the Internet and does not need to individually transmit the image data to a plurality of electronic instruments is able to start the next photographing operation immediately after the image data upload. In addition, since each portable telephone downloads the image data through the image server with a high transmission capability, the individual electronic instruments can download the image data simultaneously at high speed and the downloaded image data can be promptly reviewed at the individual electronic instruments. 
     In the embodiment described above (see  FIGS. 98 and 128 ), thumbnail image data corresponding to a specific set of image data are transmitted by the electronic camera to the electronic instrument while the image data upload information is exchanged between the electronic camera and the electronic instrument through a wireless communication. Thus, the basic contents of the image data can be checked at the electronic instrument prior to downloading of an image data by reviewing the thumbnail image data and if necessary, an action such as cancellation of the downloading can be taken. 
     In the embodiment described above (see  FIGS. 112 and 113 , the electronic camera generates thumbnail image data correspondence to image data being obtained through a photographing operation, uploads the image data to an image server on the Internet and saves the upload information, appended to the thumbnail image data, in the electronic camera. As a result, desirable image data can be selected and promptly downloaded from the image server for use. 
     In the embodiment described above (see  FIGS. 126 and 127 ), the wireless communication directivity of the wireless communication circuit  710  is restricted so that the directivity manifests in a direction along which a subject is highly likely to be present relative to the electronic camera main unit by using an electromagnetic shield film or the like. Thus, reliable wireless communication with the portable telephone carried by the subject can be achieved to exchange the image data upload information between the electronic camera and the subject&#39;s portable telephone through wireless communication and, at the same time, the likelihood of wirelessly communicating with a party other than the subject is reduced. 
     In the embodiment described above (see  FIG. 128 ), the image data are ultimately saved at the image server specified by the subject. As a result, the subject is relieved from the task of saving the image data at his own image server, whereas the electronic camera is able to start the next photographing operation immediately after the image data upload since it only needs to upload the image to a single preassigned image server. 
     EXAMPLES OF VARIATIONS 
     The present invention is not limited to the embodiment described above and allows for numerous variations and modifications. 
     In the embodiment described above (see  FIGS. 98, 99, 123 and 128 ), the electronic camera uploads image data to an image server on the Internet and a portable telephone downloads the image data from this image server. However, the image server does not necessarily need to be one on the Internet, and it may be an image server on a local communication network, instead. For instance, the present invention may be adopted in a system in which an image server set up on a wireless LAN (local area network) conforming to the IEEE  802  standard is accessed by electronic cameras and portable telephones (electronic instruments) to upload and download image data. 
     In reference to the embodiment (see  FIGS. 98, 123 and 128 ), an information transmission system and an information transmission method, through which image data obtained through a photographing operation performed at an electronic camera are delivered to a portable telephone carried by a subject or a printer, are described. However, the present invention is not limited to the application in image data transmission, and it may be adopted in general information transmission between an information sender and an information recipient present in close proximity to each other. For instance, the present invention may be adopted in an audio data transmission between an information sender that is an audio recording apparatus and an information recipient that is a portable telephone, in which audio data recorded by the audio recording apparatus are transmitted to the portable telephone via an audio server on the Internet. 
     In the embodiment described above (see  FIGS. 98 and 123 ), the electronic camera uploads image data to an image server on the Internet and a portable telephone (electronic instrument) downloads the image data from this image server. However, the electronic camera may transmit the electronic instrument identification information of each electronic instrument with which communication has been achieved, together with the image data, to the image server and the image server, in turn, may only allow a download of the image data by the electronic instruments corresponding to the identification information thus received, in order to restrict recipients allowed to download the image data from the image server. In this case, an unauthorized image data download from the image server is prevented for privacy protection. 
     In the embodiment described above (see  FIGS. 98 and 123 ), the electronic camera uploads image data to an image server on the Internet and a portable telephone downloads the image data from this image server. However, the portable telephone may transfer the upload information received from the electronic camera to another electronic device (e.g., a personal computer belonging to the subject) to download the image data by accessing the image server from the other electronic device, instead. In this case, the image data can be reviewed on a screen larger than the portable telephone screen and also a sufficient memory capacity for saving the image data can be assured. 
     In the embodiment described above (see  FIGS. 98 and 123 ), the electronic camera uploads image data to an image server on the Internet and a portable telephone (electronic instrument) downloads the image data from this image server. Instead, the electronic camera may transmit the electronic instrument identification information of each electronic instrument with which communication has been achieved, together with the image data to the image server, and the image server, in turn, may transmit the image data (in a push-type information transmission) to the electronic instrument corresponding to the identification information by issuing a transmission request to the electronic instrument based upon the identification information. In such a case, since the electronic camera and the electronic instrument do not exchange the image data upload information and the image data are transmitted (pushed) to the specific electronic instrument only, privacy is protected and, at the same time, the image data recipient is relieved of the task of reading out the image data. 
     In the embodiment described above (see  FIGS. 98 and 123 ), the electronic camera and a portable telephone (electronic instrument) exchange the image data upload information (the image server address information and the image data identification information), the electronic camera uploads the image data to the image server on the Internet and the portable telephone (electronic instrument) downloads the image data from the image server. However, the configuration described below may be adopted to provide an image service system in which electronic cameras are installed at a plurality of photographing points in a larger premises such as a theme park, a guest having taken a picture at a desired photographing point downloads the image data obtained through the photographing operation from an image server. Namely, each camera does not need to include an internal means for communication to communicate with a portable telephone carried by the guest but is instead paired with a means for communication installed separately from the electronic camera, image data obtained through a photographing operation executed with a given electronic camera by a guest are appended with specific identification information and are saved at a specific image server and the image server address information and the image data identification information are transmitted to the portable telephone of the guests by the means for communication. In addition, by restricting the photographing position at which a guest can be photographed during a photographing operation and installing the means for communication provided as a separate member from the electronic camera at a position near the guest being photographed, the communication output can be lowered to prevent any interference from an electronic device other than the portable telephone of the guest who is the subject. 
     Furthermore, when offering image services such as those described above in a theme park or the like, a special electronic instrument for exclusive use in conjunction with the image transmission system according to the present invention may be offered to each guest at the time of admission to ensure that image data are transmitted to the guest who is photographed in the image data with a high degree of reliability by preventing interference from other electronic devices. In an image transmission system in which the photographing side, the image recipient side and the image server are fixed as described above, it is not necessary to provide the image recipient side with the image server address information, and the image recipient side only needs to be provided with the image data identification information. In this case, the image server address information is fixed and stored within the electronic cameras, the means for communication and the electronic instrument for exclusive use within the property. 
     Alternatively, the identification information of the special electronic instrument carried by each guest may be transmitted by the electronic instrument to the means for communication so that each set of image data, appended with the corresponding electronic instrument identification information is saved into the image server. In this case, no image data identification information needs to be transmitted to the special electronic instrument carried by the guest. Namely, the electronic instrument identification information is transmitted to the photographing side from the special electronic instrument during the photographing operation and the identification information is appended to the image data and is saved into the image server. The image server, accessed by the special electronic instrument carried by the guest, only needs to download the image data corresponding to the electronic instrument identification information to the electronic instrument. As an alternative, the image server may forcibly transmit the image data to the special electronic instrument corresponding to the identification information appended to the image data. In this case, the volume of data exchanged between the image data photographing side and the image data recipient side and the types of information exchanged between them can both be reduced. In addition, since the communication is conducted by using the special electronic instrument for exclusive use within the property, interference from other electronic devices can be prevented to improve the reliability of the communication. 
     In the embodiment described above (see  FIGS. 98 and 123 ), the electronic camera and a portable telephone (electronic instrument) exchange the image data upload information (the image server address information and the image data identification information), the electronic camera uploads the image data to the image server on the Internet based upon the upload information and the portable telephone (electronic instrument) downloads the image data from the image server based upon the upload information. However, the upload information does not need to include the image data identification information and may be constituted of the image server address information alone, instead. In this case, the portable telephone connects with the image server to which the image data have been uploaded based upon the image server address information, either manually or automatically searches for desired image data based upon the photographing data and the like after the connection is achieved and downloads the image data selected through the search from the image server. Since this eliminates the need for storing in memory identification information for each set of image data at the portable telephone, a means for storage with a small storage capacity can be utilized in the portable telephone. 
     In the embodiment described above (see  FIG. 98 ), the electronic camera and a portable telephone (electronic instrument) exchange the image data upload information (the image server address information and the image data identification information), the electronic camera uploads the image data to the image server on the Internet and the portable telephone (electronic instrument) downloads the image data from the image server. Instead, the electronic camera may transmit the image server address information to the portable telephone and receive the portable telephone identification information (the telephone number or the like) from the portable telephone during the photographing operation, generate identification information for the image data based upon the portable telephone identification information and upload the image data appended with the identification information thus generated to the image server. In this case, when the image server is accessed by the subject&#39;s portable telephone, the portable-telephone-identification information is provided to the image server so that the image data appended with the identification information corresponding to the portable telephone identification information are downloaded to the portable telephone. In addition, the electronic camera may generate image data identification information (an image data filename or the like) in combination with other photographing information (e.g., the photographing date/time point (date and time) information) as well as the portable telephone identification information. 
     In the variation described above, it is not necessary to store in memory the image-data-identification information for each set of image data at the portable telephone and the subject carrying the portable telephone is allowed to download all the image data in which the subject is photographed simply by notifying the image server of the portable telephone number. 
     In addition, the portable telephone may access the image server by specifying a given photographing date/time point to selectively download the image data photographed at the photographing date/time point specified by the subject carrying the portable telephone. Furthermore, the image server may keep track of a download history (portable telephone numbers of download recipients, download date/time points, etc.) for each set of image data so that when a portable telephone accesses the image server by specifying the download history, image data that have never been downloaded to the mobile telephone or image data that have not been downloaded over a predetermined length of time can be selectively downloaded. 
     In this case, the portable telephone is able to selectively download specific image data without having to store in memory the identification information for each set of image data. 
     In the embodiment described above (see  FIG. 98 ), the image data upload information is exchanged through a wireless (electromagnetic wave) communication between the electronic camera and an electronic instrument carried by a subject. During this process, a redundant communication with electronic instruments carried by parties other than the true subject should be prevented by keeping the wireless-transmission- signal output level within a range lower than a predetermined value and thus limiting the communication-enabled distance range based upon the assumption that electronic instruments have the average reception capability. This distance range is determined by taking into consideration the standard manner in which the electronic camera is electronic apparatus is used, whether or not an object that blocks electromagnetic waves is present between the electronic camera and the electronic instrument, the performance of the receiver at the electronic instrument and the like. It is desirable to set the distance range to approximately 10 m or less in correspondence to the focal length of the standard photographic lens. 
     In the embodiment described above (see  FIGS. 98, 123 and 128 ), the wireless communication circuit engages in communication through a short-distance wireless system such as Bluetooth. However, the short-distance wireless communication may be achieved through a system other than Bluetooth, such as a wireless LAN (IEEE802.11) or infrared communication (IrDA). Furthermore, communication may be achieved by simultaneously utilizing a plurality of short-distance wireless systems. In the latter case, an electronic instrument with any type of short-distance wireless function carried by a subject, can engage in wireless communication with the electronic camera. 
     In the embodiment described above (see  FIGS. 98, 123 and 128 ), the image data upload information is exchanged through a wireless (electromagnetic wave) communication between the electronic camera and the electronic instrument carried by the subject. However, the image data upload information may instead be exchanged through another non-contact or contact method. 
     In the embodiment described above (see  FIGS. 98, 123 and 128 ), the electronic camera attempts short-distance wireless communication with electronic instruments in the vicinity of the electronic camera in order to exchange image data upload information. The electronic camera, however, may be preset so as to disallow any wireless communication with an electronic instrument carried by the photographer operating the electronic camera. 
     In the embodiment described above (see  FIGS. 98 and 123 ), an electronic instrument having obtained upload information from the electronic camera through communication between the electronic camera and the electronic instrument accesses the image server to which image data have been uploaded based upon the upload information and downloads desired image data from the image server. Instead, during the communication between the electronic camera and the electronic instrument, the electronic camera may obtain the identification information of the electronic instrument and provide the electronic instrument identification information thus obtained to the image server before the electronic instrument accesses the image server. In this case, the image server enables exclusive access by the electronic instrument corresponding to the identification information received from the electronic camera on a specific condition. The specific condition may be a specific length of time allowed to elapse after the electronic instrument identification information is received from the electronic camera or a specific limit on the number of image data downloads. These measures prevent an electronic instrument that has not communicated with the electronic camera from downloading image data from the image server. In addition, by limiting the time period during which a given set of image data can be downloaded or the number of times the data can be downloaded, the risk of a third-party downloading the image data from the image server by using the same electronic instrument later on is reduced. 
     In the embodiment described above (see  FIGS. 98, 123 and 128 ), information (the image server address information, the image data identification information, the electronic instrument identification information and the like) exchange through wireless (electromagnetic wave) communication between the electronic camera and the electronic instrument carried by the subject. However, prior to the information exchange, an open key to be used to code the information may be transmitted from the information recipient to the information sender, the information sender may transmit the information coded by using the open key and the information recipient may decode the received information by using a secret key coupled with the open key. In this case, even if the information exchanged between the electronic camera and the electronic instrument is intercepted by another electronic instrument, the information remains secure. 
     In the embodiment described above (see  FIG. 98 ), the electronic camera attempts wireless communication with electronic instruments present in the vicinity of the electronic camera to exchange the image data upload information during a photographing operation. During this process, the transmission signal output level for the wireless communication (electromagnetic waves, infrared light) may be adjusted in conformance to the subject distance (the output level is raised as the distance to the subject increases). The distance to a subject can be obtained through a detection performed by a distance detection device of the known art, or a photographing distance of the photographic lens which is manually set may be used as the subject distance. Through this output level adjustment, the electronic camera is able to achieve communication with the electronic instrument held by a subject with a high degree of reliability and the likelihood of achieving communication with an electronic instrument held by a party other than the subject is reduced. 
     In the embodiment described above (see  FIG. 99 ), the electronic camera uploads image data obtained through a photographing operation to an image server on the Internet through its internal-wireless-telephone circuit. Instead, the electronic camera may first transmit the image data to a portable telephone carried by the photographer operating the electronic camera through short-distance wireless communication and the photographer&#39;s portable telephone may upload the image data to the image server on the Internet through a wireless telephone line. Since this eliminates the need to provide an internal wireless telephone circuit at the electronic camera, the electronic camera can be miniaturized and further advantages related to power consumption and cost are also achieved. 
     In the embodiment described above (see  FIG. 99 ), the electronic camera uploads image data obtained through a photographing operation to a selected image server. However, image data may be uploaded to a fixed image server instead. For instance, by setting up a fixed image server to be exclusively used for image data upload, marketing an electronic camera in a package in which image services are offered through the image server and ensuring all the images photographed with the camera are uploaded to the image server, the purchaser of the electronic camera is relieved from the task of signing up with an image server himself and the camera can be operated with ease even by users not familiar with the Internet or the like. It is to be noted that the address information of the fixed image server is stored in an nonvolatile memory such as an EEPROM in the electronic camera. 
     In the embodiment described above (see  FIG. 112 ), the electronic camera automatically downloads all image data photographed in the photographing mode to the image server (the download recording mode). However, the electronic camera may be allowed to assume another photographing mode (a recording mode for memory cards) for recording photographed image data into a memory card loaded at the electronic camera and may be manually or automatically switched to the download recording mode or the memory card recording mode. For instance, the electronic camera having been operated in the recording mode may be automatically switched to the download recording mode as the remaining capacity of the memory card becomes low or the electronic camera having been operated in the download recording mode may be automatically switched to the recording mode when the electronic camera moves out of the wireless telephone line communication range. Such features allow the photographer to take pictures with the electronic camera without having to worry about state of the memory card or the state of the wireless telephone line. 
     In addition, image data may be uploaded to the image server and also saved into the memory card at the same time under normal circumstances, and either the upload or the save may be skipped as necessary. This eliminates the need to create an image data back-up later on and thus, the image data can be saved with a higher degree of reliability. 
     In the embodiment described above (see  FIGS. 112 and 113 ), the image data upload information is exchanged between the electronic camera and the electronic instrument through short-distance wireless communication and then the electronic camera uploads the image data to the image server. However, this order may be reversed, i.e., the electronic camera may first upload the image data to the image server and then the image data upload information may be exchanged between the electronic camera and the electronic instrument through a short-distance wireless communication. 
     In the embodiment described above (see  FIGS. 112 and 113 ), a photographing operation is executed in response to an operation of the shutter release button provided at the electronic camera. However, a photographing operation in the electronic camera may be started up through short-distance wireless communication in response to remote control implemented from a portable telephone carried by a person to be photographed. In this case, the short-distance wireless circuit can be effectively utilized and, at the same time, the photographing operation can be executed with the timing desired by the subject. 
     In the embodiment described above (see  FIGS. 113 and 119 ), the short-distance wireless communication between the electronic camera and an electronic instrument in the vicinity is initiated by the electronic camera to transmit the image data upload information to the electronic instrument from the electronic camera. However, a communication request may be first issued to the electronic camera from an electronic instrument carried by the subject and then the image data upload information may be transmitted by the electronic camera to the electronic instrument, instead. For instance, a request for the image data upload information may be issued from the portable telephone  160  to an electronic camera in its vicinity in response to a specific operation of an operating key  162  at the portable telephone  160  shown in  FIG. 102 . Since this enables the subject side to initiate the short-distance wireless communication between the electronic camera and the portable telephone, the electronic camera does not need to engage in short-distance wireless communication each time a photographing operation is performed unless necessary and thus, the electronic camera can perform the next photographing operation immediately after the photographed image data are uploaded to the image server. 
     In the embodiment described above (see  FIGS. 113 and 119 ), the image data upload information is exchanged through wireless (electromagnetic wave) communication between the electronic camera and the electronic instrument carried by the subject. During this wireless communication, the electronic instrument having received search messages from the electronic camera may display a message indicating a communication from the electronic camera has been received or such a message may be provided to the subject via a means for sound generation on the subject side. 
     Such measures make it possible for the subject to verify that a communication from the electronic camera has been received. In addition, the subject, i.e., the user, provided with an audio message, can verify that communication from the electronic camera has been received while keeping the electronic instrument which may not include a means for display in a pocket or the like. In addition, the subject having verified that the communication has been received may refuse to download the image data if necessary by cutting off further communication. 
     In the embodiment described above (see  FIGS. 113 and 119 ), the image data upload information is automatically exchanged through wireless communication between the electronic camera and the electronic instrument held by the subject. However, the electronic instrument having received the search communication from the electronic camera may compare the identification number of the electronic camera initiating the search communication with the identification numbers of electronic cameras preregistered at the electronic instrument and may refuse any further communication with the electronic camera if it is determined to be an unregistered camera. In this case, the subject can reject any image data photographed by a stranger. 
     In the embodiment described above (see  FIGS. 113, 119 and 122 ), the image data upload information is exchanged between the electronic camera and an electronic instrument through wireless communication. During the wireless communication, the electronic camera may transmit information on the specifications (the data volume, the recording format, the image aspect ratio, the number of pixels, etc.) to the electronic instrument to allow the electronic instrument side to decide whether or not the image are to be downloaded in correspondence to a specific purpose of use for the image data based upon the received image data specification information. For instance, if the party on the electronic instrument side only wishes to review image data displayed at the screen of his portable telephone, he may choose to download image data with a small data volume or a small number of pixels. 
     In the embodiment described above (see  FIG. 113 ), the image data upload information is automatically exchanged between the electronic camera and the electronic instrument held by a subject through wireless communication during a photographing operation. Instead, photographed image data may be saved into a RAM or a memory card on a temporary basis, a series of sets of image data may be uploaded to the image server and the image data upload information may be exchanged between the electronic camera and the electronic instrument held by the subject through wireless communication when a series of photographing operations has been completed. Since this eliminates the need to upload the image data and engage in wireless communication each time one of a plurality of pictures taken without changing the composition (as in an exposure bracket photographing operation) is photographed, the series of pictures can be taken quickly. Then, after the series of photographing operations is completed or the like, the plurality of sets of image data can be uploaded in a batch and the upload information with regard to the plurality of sets of image data can be exchanged through a single wireless communication, either automatically or manually. 
     In the embodiment described above (see  FIG. 113 ), image data are uploaded to the image server and the electronic camera and the electronic instrument held by the subject engage in wireless communication every time a photographing operation is performed. However, the image data upload operation and the wireless communication operation may be disallowed if the image data upload and the wireless communication are likely to cause a delay in the photographing operation. For instance, by automatically disallowing the image data upload operation and the wireless communication operation when performing a continuous photographing (continuous shooting) operation, it is possible to prevent any significant lag attributable to the image data upload operation and the wireless communication operation from manifesting between the image frames obtained through the continuous photographing operation. In this case, the image data obtained through the continuous photographing operation should be saved into RAM or a memory card on a temporary basis so that the series of image data can be uploaded in a batch to the image server and the image data upload information can be exchanged between the electronic camera and the electronic instrument held by the subject through wireless communication either automatically or manually after the series of pictures are taken. 
     In the embodiment described above (see  FIG. 122 ), the upload information and the print instruction information corresponding to the image data to be printed are transmitted to the printer from the electronic camera in response to an operation of the PRINT button. The print instruction information transmitted through this process may include information on various printer settings (such as the print size, the print quality and the printing color). 
     In the embodiment described above (see  FIG. 122 ), the upload information and the print instruction information corresponding to the image data to be printed are transmitted to the printer from the electronic camera in response to an operation of the PRINT button. Instead, in response to PRINT button operation, the electronic camera may obtain from the printer the identification information (an IP address) used to identify the printer on the network and may transmit this identification information to the image server to enable the image server to transmit the image data to be printed to the printer corresponding to the identification information. In this case, it is not necessary to store image data at the electronic camera and, at the same time, image data to be printed can be quickly transmitted to the printer to undergo a print operation. 
     In the third embodiment described above, information (address information) with regard to an upload of information (image) to an information server (image server) on the Internet is exchanged through short-distance communication between the information (image) sender side and the information (image) recipient side, the information (image) is first uploaded to the information server on the Internet from the information (image) sender side and the information (image) recipient side downloads for a utilization the information (image) from the Information server (image server) on the Internet to which the information (image) has been uploaded. Thus, an information transmission system (image transmission system) and an information transmission method (image transmission method) that enable a speedy transmission of the information (image) to the information (image) recipient side without placing a great onus on the information (image) sender side during the information (image) transmission are provided. 
     In particular, when a group picture is taken with an electronic camera system that handles image data with a large data volume and the image data obtained through the photographing operation need to be delivered to portable telephones or the like of the plurality of subjects, the electronic camera is only required to execute the processing for transmitting the upload information to the individual portable telephones through short-distance communication and the processing for uploading the image data to the image server on the Internet, the onus of having to transmit the image data to the individual portable telephones through short-distance communication with the portable telephone is lifted from the electronic camera and the desired image data can be obtained promptly at each portable telephone as well. 
     The various programs explained in reference to the embodiments can be provided in a recording medium such as a CD-ROM or through data signals on the Internet. For instance, a program executed on the personal computer  140  in  FIG. 1  may be read from a CD-ROM drive device (not shown) mounted at the personal computer  140 . If a program installed at the electronic camera  100  or the portable telephone  160  can be overwritten, the electronic camera  100  or the portable telephone  160  may connect with the personal computer  140  to download an upgrade program. The programs may be downloaded via the Internet  130  by adopting the configuration shown in  FIG. 1  as well. By setting up an application program server in place of the image sever  150  in the configuration, the programs may be downloaded from this server via the Internet. When providing the programs via the Internet, they are embodied as data signals on a carrier wave to be transmitted via a communication line. Thus, programs can each be distributed as a computer-readable computer program product assuming any of the various modes such as a recording medium or carrier wave.