Abstract:
An image reproduction system configured by an image reproduction device that can accumulate a still image or a moving image for reproduction, and an information processing device that makes a setting to the image reproduction device. The image reproduction device includes: image data recording means recorded with image data; audio data recording means recorded with audio data; setting information recording means recorded with setting information about the audio data recorded on the audio data recording means; a display section displaying thereon the image data recorded on the image data recording means; an audio output section outputting the audio data recorded on the audio data recording means; and a control section making a selection from the audio data for output from the audio output section based on preset details when the image data is displayed on the display section in a predetermined manner, and the information processing device includes: an identification section acquiring, for identification, the setting information about the audio data recorded on the setting information recording means in the image reproduction device; an audio data recording section recorded with audio data; and an audio data process section converting the audio data recorded on the audio data recording section into a predetermined format based on the setting information about the audio data identified by the identification section, and forwarding resulting audio data to the image reproduction device for recording to the audio data recording means.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application claims priority from Japanese Patent Application No. JP 2005-252536 filed on Aug. 31, 2005, the disclosure of which is hereby incorporated by reference herein. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an image reproduction system and device, an image capture device, and an information processing device and, more specifically, to a technology suitable for an image capture device called digital camera to reproduce images in storage. 
     2. Description of the Related Art 
     A camera device called digital camera displays a captured still or moving image for user perception. The captured image is stored in a memory card or others inserted to the camera device, and the image is displayed on a relatively small-sized display equipped to the camera device. The camera device has a reproduction function called slide show reproduction, and sequentially reproduces captured and accumulated still images on a display on an image-by-image basis each for a few seconds. 
     With such image reproduction in a slide show in the device provided with the image reproduction function, e.g., previous camera device, images simply appear one after another, and thus there has been a demand for more advanced processing. For example, if an internal speaker outputs background music (BGM) during a slide show, the image reproduction can be performed with effects. 
     For output of BGM, the camera device is required to store therein audio data. If users want to accumulate any arbitrary music for use as the audio data, there is a possible technology of downloading the audio data from outside sources to a memory or others whatever equipped in a so-called portable audio reproduction device. 
     Patent Document 1 (JP-A-2005-56289) describes an exemplary process of content management with which downloaded audio is accumulated in an audio reproduction device, and accumulated audio data is reproduced. 
     SUMMARY OF THE INVENTION 
     As with Patent Document 1, the technology of downloading audio data to an audio reproduction device has been variously developed. The audio data is acquired by an information processing device, e.g., personal computer device, over the Internet or others through a connection established between the information processing device and the reproduction device. The issue here is that this previous technology is developed with a presumption that the audio reproduction device side is ready for the advanced audio reproduction process, i.e., on the computer device side, the audio data is transferred to an audio data file in a memory of the audio reproduction device, and the transferred audio data is reproduced in the audio reproduction device. 
     Therefore, if such a technology developed for a portable audio reproduction device of a previous type is applied as it is to the audio reproduction function of a level for use for a slide show in the aforementioned digital camera, it means a need arises for the digital camera itself to have an advanced function to execute an audio reproduction process. This is thus considered not preferable. What is more, in the digital camera, if the audio data is allowed to be freely stored in an internal memory of a limited memory capacity, this means that the memory capacity that is supposed to be available for images as the camera device is limited. This is also considered not desirable. If with a portable audio reproduction device, as is originally designed for audio reproduction, the device is capable for various operations for audio reproduction, e.g., tune selection prior to reproduction. Such functions for audio reproduction operations are complicated, and it is thus not considered preferable to provide such functions to the digital camera only for audio reproduction of a level for use for a slide show. 
     Exemplified above is the case with the image reproduction in a slide show using a digital camera. If for audio reproduction at the time of image reproduction using a relatively small-sized terminal of a similar type, the same problems as above will occur. The problem caused when the audio data is transferred to a terminal, e.g., digital camera, is also observed when various types of data is transferred to a terminal being relatively limited in function. 
     It is thus desirable to enable smooth audio data exchange for audio reproduction at the same time as image reproduction utilizing an image reproduction function. 
     An embodiment of the invention is directed to a device including: for reproduction control over accumulated still images or moving images, an image data recording section recorded with image data; an audio data recording section recorded with audio data; and a setting information recording section recorded with setting information about the audio data recorded on the audio data recording section. When the image data is displayed on a display section in a predetermined manner, executed is an audio output process of selecting and outputting the audio data based on preset details. The device is connected to an information processing device, including an identification section that acquires, for identification, the setting information about the audio data recorded on the setting information recording section; an audio data recording section recorded with audio data; and an audio process section that converts the audio data recorded on the audio data recording section into a predetermined format based on the setting information about the audio data identified by the identification section, and forwards the resulting audio data to the connected device for recording to the audio data recording section. 
     Such a configuration enables to output any prepared audio data simultaneously when the image data is displayed, and to replace the audio data with another if such a command comes from the information processing device. At the time of such data replacement, the data is changed in format and size to conform to the device prior to writing. 
     According to the embodiment of the invention, any prepared audio data can be output simultaneously when the image data is displayed, and the audio data can be replaced with another if such a command comes from any other device. At the time of such data replacement, by the process executed by any external device such as computer device connected to the device, the data is changed in format and size to conform to the device prior to writing. This favorably allows users to record the audio data without going through complicated operations, e.g., format or bit rate setting specifically for the device. What is more, the resulting audio data will be reduced to necessary minimum with the maximum reduction of load on the device in charge of image reproduction. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram showing an exemplary system configuration in an embodiment of the invention; 
         FIG. 2  is a diagram showing an exemplary area configuration in a memory in the embodiment of the invention; 
         FIG. 3  is a flowchart showing an exemplary music data transfer process in the embodiment of the invention; 
         FIGS. 4A to 4C  are each a diagram showing an exemplary display on a display of a computer device in the embodiment of the invention; and 
         FIGS. 5A and 5B  are each a diagram showing an exemplary display on a display section of a camera device in the embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     In the below, an embodiment of the invention is described by referring to the accompanying drawings. 
     Exemplified here is a system configured by a digital camera device and a personal computer device. The digital camera device captures images, i.e., still images and moving images, and the personal computer device is connected to the digital camera device. Described first is the configurations of such devices by referring to  FIG. 1 . 
     A digital camera  100  extracts, as an electric image capture signal, light of an image formed on an image capture element, i.e., CCD (Charge Coupled Device) imager  102 , via an optical system  101  exemplified by a lens or others. The image capture signal is supplied to an image capture process section  103  so that image data is derived. The image data is supplied to a data process section  104  from the image capture process section  103 , and is subjected to various data processes on a frame basis, i.e., format change to a predetermined format, compression if with moving image data, or others. 
     The digital camera device  100  of this embodiment is detachable with a memory card  115  in the predetermined shape, e.g., stick, and is equipped with an internal memory  114  separately from the memory card  115 . The internal memory  114  and the memory card  115  are both a nonvolatile memory. The image data provided by the data process section  104  can be stored in the memory card  115  or the internal memory  114  under the control of a control section  111 . When images are captured, the image data is subjected to a display process after supplied to a display section  112 , which is configured by a liquid crystal panel or others attached to the body of the digital camera device  100 . The captured image data stored in the internal memory  114  and the memory card  115  can be displayed on the display section  112  through operation of an operation section  113 , which is configured by operation keys, a touch panel, and others. 
     The captured image data is displayed in a display mode in which images are designated for display one by one through key operation or others. Other than such a display mode, a slide show display mode is also available in which a plurality of still images stored in the memory are sequentially displayed on an image-by-image basis each for a few seconds. In such a slide show display mode, background music (BGM) is made to be output (reproduced). The details about the process for BGM output will be left for later description. 
     The digital camera device  100  of this embodiment is equipped with a microphone  121 . The microphone  121  picks up audio signals, and outputs the audio signals to an audio input process section  112  for format conversion. The resulting audio data in a predetermined format can be stored in the memory card  115  or the internal memory  114 . Such storage of audio data to the memory  114  or  115  is performed also under the control of the control section  111 . If encoding is performed in the audio input process section  112 , the audio data is encoded to data of MPEG (Moving Picture Experts Group)-1 layer 2, for example. For whether the resulting audio data is stored or not, the mode setting for image capture is a determination factor. Although the audio data is often stored mainly when moving images are captured and stored, alternatively, another mode may be provided to store audio about for a few seconds when still images are captured. The audio data derived as a result of image capture, whichever moving or still images, is stored in an image data file as the data accompanying the image data. The image data file will be described later. 
     When the image data accompanied with the audio data is read from the memory  114  or  115  for display on the display section  112 , the audio data is supplied to an audio reproduction process section  123  for demodulation or analog conversion therein for reproduction. The resulting data is output from a connected speaker  124 . 
     In the digital camera device  100  of this embodiment, an external interface section  116  is connected to circuit components via an internal bus so that external equipment can be connected thereto. The external interface section  116  is provided with a port for connection with a universal serial bus (USB), for example, and can be connected to a computer device or others. When a connection is established via the external interface section  116  with any external equipment such as computer device, the external equipment side recognizes the data stored in the internal memory  114  and/or the memory card  115  for data writing and reading. 
     As shown in  FIG. 2 , the internal memory  114  of the digital camera device  100  includes an image file area for storage of image data, a music information file area for storage of music information, and a program area for storage of program data operating the camera device. The program area stores therein a program for operating the digital camera device  100 , and the music information file area stores therein music information for use as BGM. The music information for use as BGM is stored as music data (audio data) of MPEG-1 layer 2, sharing the same format as for the data of audio picked up by the aforementioned microphone  121 . In this embodiment, presumably, the format can be recorded with four tunes at the maximum, i.e., each tune carries the music data of about the predetermined level. The stored tunes each carry the music data of 180 seconds at the maximum. Alternatively, the music data may be stored by fading in the starting portions of the corresponding tune, and fading out the ending portions thereof. In this embodiment, the music data is previously defined by maximum volume or maximum reproduction time prior to recording to the music information file area. This thus enables to make a setting in advance how many music data can be recorded to the music information file area. There is also an encoding format for music data that can be decoded by the audio reproduction process section  123  serving as the music data decoding section of the camera device. The music information file area is previously provided with setting data about the music data for storage therein. The setting data is stored, separately from the music data, as the setting information about the music data. 
     This setting data includes, for example,
         1. the number of music data, e.g., the number of tunes, possibly recorded in the music information file area,   2. the type of encoding format for music data possibly decoded by the camera device,   3. the maximum volume per music data possibly reproduced by the camera device,   4. the maximum reproduction time per music data possibly reproduced by the camera device, and   5. the bit rate suitable for reproduction of music data encoded by the camera device.       

     Described next is the configuration of a computer device  200  connected to the digital camera device  100  of this embodiment. The configuration of the computer device  200  of  FIG. 1  is general for a personal computer device. That is, the computer device  200  is configured to include: a control section  201  in charge of various types of computation and control exercise; a keyboard  202  for user operation; a display section  203  configured by a computer display; a hard disk drive section  204  for storing (accumulate) various types of programs, downloaded music and video data, and others; a RAM  205  being a memory for use for data computation or others; an external interface section  206  for connection with peripheral equipment; and a communications section  207  for connection to the Internet  99 . If with a notebook computer device, these components are collectively disposed in a cabinet, and if with a desk top computer device, the keyboard  202  and the display section  203  are often separately disposed. 
     The computer device  200  becomes accessible to a music data server  90 , for example, if connected to the Internet  99  via the communications section  207 . The computer device  200  can download tunes whatever desired by a user, and can store those to the hard disk drive section  204  or others. In the hard disk drive section  204  in this embodiment, software is installed for management of the digital camera device  100 , and can be accessed for activation as appropriate. 
     With the software for management of the digital camera device  100 , the music information for use as BGM can be managed. The music information is the one stored in the music information file area in the memory  114  of the digital camera device  100 . The software includes the same music data as the data in the music information file area stored in the internal memory  114  when the digital camera device  100  is shipped out. Using the music data, the music data in the digital camera  100  can be put back to its original state. This software includes software for converting the audio data in the computer device into data of MPEG-1 layer 2 in the audio data format conforming to the digital camera device  100 . 
     By referring to the flowchart of  FIG. 3 , described next is an exemplary process by the software activated by the computer device  200  for managing the digital camera device  100 , i.e., process for managing the music information for use as BGM. As shown in  FIG. 1 , first of all, the computer device  200  and the digital camera device  100  are directly connected to each other using a USB cable or others (step S 11 ), and then the corresponding software is activated (step S 12 ). Once the software is activated, executed next is a recognition process to the recording data in the internal memory  114  of the digital camera device  100 . In this recognition process, a determination is made whether the music information file area includes the setting data ( FIG. 2 ) (step S 13 ). If the determination is made that the music information file area includes no setting data, the display section  203  of the computer device  200  displays thereon a message telling “no digital camera for music data writing”, and this is the end of the procedure (step S 19 ). 
     When the determination is made that the music information file area includes the setting data, in step S 14 , executed is a process of checking the details of the setting data by the computer device  200  (step S 14 ). At this time, the computer device  200  determines the format or others for the music data possibly reproduced by the digital camera device  100 , and then determines whether the music data of the format can be created thereby (step S 15 ). With the determination of NO, the procedure goes to step S 19 , and an error message is displayed. 
     When it is determined that the music data can be created for reproduction in step S 15 , based on the information acquired from the setting data, the display section  203  GUI-displays thereon the number of BGM tunes possibly stored in the music information file area in the internal memory  114  of the digital camera device  100  (step S 16 ). 
       FIG. 4A  shows an exemplary GUI display in this case. In this example, displayed are graphics each indicating a tune, tune titles (Music1, Music2, Music3, and Music4), a reproduction button, a volume control, a tune change button, a tune deletion button, a reset button to put every tune back to its initial state, and the like. 
     With such GUI display, the user operates the keyboard or others to select any of the tune graphics, and depresses the reproduction button. This responsively reads out the corresponding music data from the internal memory  114  for transfer to the computer device  200 . The music data is then reproduced utilizing the music reproduction function in the computer device  200 . 
     Referring back to the flowchart of  FIG. 3 , when any tune change is made on the GUI display in step S 16 , a data creation process is executed (step S 17 ). That is, the list of music data accumulated in the computer device  200  is displayed for user to select his or her preferred tune. The music data of the selected tune is converted into the music data possibly reproduced by the digital camera device  100 . The resulting music data is transferred to the digital camera device  100  using a USB cable or others for connection, and replaces the music data of the corresponding tune in the music information file in the internal memory  114  of the camera device  100  (step S 18 ). 
     When the music data is created in step S 17 , the format change is made to derive data of MPEG-1 layer 2, and the bit rate is also changed to be suitable for storage to the digital camera device. When the length of tune is longer than 180 seconds, the data covers only 180 seconds from the starting portion. If necessary, the starting portion is faded in, and the ending portion is faded out. The information found in the setting data acquired in step S 14  is used for creation of the music data. That is, the processes in step S 17 , i.e., format change of the music data, bit rate determination suitable for the digital camera device, and length determination for a tune, are executed based on information in the setting data, i.e., the encoding format type of the music data possibly decoded by the digital camera device, the bit rate suitable for recording to the digital camera device, and the maximum reproduction time per tune possibly reproduced by the digital camera device. 
       FIG. 4B  shows an exemplary screen display when the user makes a tune change operation. In this example, “Music1” is selected out of four tunes for a change, and the list (tune titles and time) is displayed for the music data in the storage location (file) of the music data available for replacement. The music data for replacement varies in type, including data downloaded from the Internet, data read from music disks, and others. At this time, a warning message is displayed, telling “If with music play time longer than 180 seconds, latter portion is deleted”. In response to a user operation, i.e., any of the displayed tunes is selected, and then the change button is depressed, the process is started to change the data of “Music1” to the selected tune. During such a process, as shown in  FIG. 4C , the display section  203  displays thereon a message telling the progress of the change process. 
     With the GUI display of  FIG. 4A , when the tune reset button is depressed, the music data provided in the currently-in-progress program for initial setting is forwarded to the digital camera device  100  so that the music data is put back to its initial state. Herein, the setting data recorded in the music information file area can be restored using the restoration data recorded in the program area in the memory of the digital camera device  100 . 
     Because the music data for BGM use can be recorded in the memory of the digital camera device  100  in this way, the user can set any arbitrary tune for use as BGM, and at the time of slide show display of images, the user-set music is output as BGM from the speaker  124 . The reproducing tune can be selected through operation on the side of the digital camera device  100 . For example, as shown in  FIG. 5A , the menu screen for use to make various settings is displayed on the display section  112  of the camera device  100 . After “BGM setting” is selected, as shown in  FIG. 5B , the list is displayed for the four tunes prepared in the memory  114 . When the user selects his or her desired tune in this state, the selected tune is set to be output as BGM. Herein, although a tune is 180 seconds at the maximum, if with a slide show display of 180 seconds or longer, the same tune is repeatedly reproduced. 
     In the embodiment described above, the storage area of a music information file provided in the memory  114  of the digital camera device  100  is fixed in storage capacity. This is not restrictive, and the storage capacity may be made variable through operation on the side of the computer device  200  to enable storage of a large number of tunes or longer tunes. Alternatively, when only one BGM tune is needed, the storage area is reduced in the music information file, and the capacity available for storage of image data or others may be increased. 
     In the aforementioned embodiment, described is the case of outputting the music data stored in the digital camera device as BGM for a slide show. Alternatively, the music data may be output in other cases, or the music reproduction may be solely performed with no correlation to image reproduction. 
     In the aforementioned embodiment, described is the case that the computer device identifies the setting data stored in the memory of the digital camera device, i.e., terminal device, for recording or replacing of the music data. Alternatively, any external device may identify the various types of data stored in the memory of other terminal devices, e.g., format, data amount, and length. Every time the external device performs data replacing, the data may be converted as appropriate for data rewriting, e.g., format, data amount, and length. The external device is not necessarily a computer device as long as being an information processing device capable of a data process as such. 
     It should be understood by those skilled in the art that various modifications, combination, sub-combinations, and alterations may occur depending on design requirements and other factors insofar as they are within the scope of the appended claims or the equivalents thereof.