Abstract:
A display method and display apparatus. Shooting a physical medium generates a captured image from the physical medium. An image pattern on the physical medium, which includes an identification code and binary indicators, is scanned. The identification code identifies a location on a storage medium of at least one image object. Each binary indicator is associated with a corresponding status parameter and has a positive value or a null value. At least one status parameter value is acquired and has a status parameter value for each status parameter whose binary indicator has the positive value. A display object is generated in dependence on the location appearing in the identification code and the acquired at least one status parameter value. The display object and the captured image are displayed, on a display unit of the display apparatus, in an overlapping relationship in which the display object overlaps the captured image.

Description:
DETAILED DESCRIPTION OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a display apparatus, an output device, a display system, a display method, a medium, a program product, and an external unit. The present invention relates particularly to a display apparatus that scans an image pattern to display an outputted image according to the image pattern thus scanned, a display system, a display method, a medium a program product, and an external unit. 
         [0003]    2. Background Art 
         [0004]    A code image, such as QR code (ISO/IEC18004), has conventionally been used (for example, refer to Non-patent Document 1.). The code image is used to acquire an address (URL) into a cell phone or the like in accessing, for example, the Internet. When accessing an address on the Internet, which is displayed using the code image, the personal digital assistant captures an image of the code image with a built-in camera, and decodes the captured image. The personal digital assistant then accesses the address on the Internet, which is designated with a code obtained by the decoding, to display a screen of an Internet site. Making use of the code image like this makes it possible to eliminate the time and effort of entering the address with keys. For that reason, the code image is suitable to be used for displaying an advertisement for the user&#39;s personal digital assistant. 
         [0005]    Meanwhile, as a reference technique, there is proposed such a camera that, music data recorded upon shooting an image is overlapped with the image obtained by that shooting, and printed with a special ink that is not normally visible (for example, refer to Patent Document 1.). 
         [0006]    [Patent Document 1] 
         [0007]    Japanese Unexamined Patent Publication (Kokai) No. [Non-patent Document 1] 
         [0008]    Feature of QR code, homepage URL “http://www.denso-wave.com/qrcode/qrfeature.html”, searched on Aug. 11, 2005 
       DISCLOSURE OF THE INVENTION 
     Problems to be Solved by the Invention 
       [0009]    In a conventional art, when image information designated by a code image is displayed, it is general that a display image is uniquely determined according to the code image to be scanned. As a result, an unsuitable image may be displayed depending on a user&#39;s situation. 
         [0010]    Therefore, the object of the present invention is to provide a display apparatus, an output device, a display system, a display method, a medium, a program product, and an external unit, which can solve the aforementioned problems. The object will be achieved by combinations of features set forth in independent claims in the scope of claims. In addition, dependent claims define more advantageous, specific examples of the present invention. 
       Means for Solving the Problems 
       [0011]    In order to solve the aforementioned problems, according to a first aspect of the present invention, there is provided a display apparatus including a scanning unit for scanning an image pattern on a physical medium, an acquisition unit for acquiring at least one status parameter of an external environment acquired by an environmental sensor, a decision unit for determining a display object to be presented to a user based on the image pattern scanned by the scanning unit according to the status parameter acquired by the acquisition unit, and a display unit for displaying the display object thus determined by the decision unit, and also a display system including the display apparatus, a display method, and a program product for causing an information processing apparatus to operate as the display apparatus. 
         [0012]    Moreover, according to a second aspect of the present invention, there is provided an output device including a scanning unit for scanning information, an acquisition unit for acquiring at least one status parameter indicative of a status of an external environment, a generating unit for generating output data according to the information scanned by the scanning unit and the status parameter acquired by the acquisition unit, and an output unit for outputting the output data generated by the generating unit to a user. 
         [0013]    Moreover, according to a third aspect of the present invention, there is provided a medium with an image pattern including a code indicative of information to be presented to a user attached thereto, wherein the code includes information for designating a type of a status parameter of an external environment to be acquired by an apparatus operable to present the information indicated by the code to the user, and wherein the medium permits the apparatus, which has scanned the image pattern, to acquire the type of the status parameter of the external environment and to display the display object according to the status parameter. 
         [0014]    Moreover, according to a fourth aspect of the present invention, there is provided an external unit to be attached to an information processing apparatus including an acquisition unit for acquiring at least one status parameter of an external environment acquired by an environmental sensor, and a program memory operable to store a program product for causing the information processing apparatus to operate as a display apparatus, wherein the program memory stores a program product for causing the information processing apparatus, to which the external unit is being attached, to operate as a scanning unit for scanning an image pattern on a physical medium, an acquisition unit for acquiring at least one status parameter of an external environment acquired by an environmental sensor, a decision unit for determining a display object to be presented to a user based on the image pattern scanned by the scanning unit according to the status parameter acquired by the acquisition unit, and the display unit for displaying the display object thus determined by the decision unit. 
         [0015]    Note herein that, the aforementioned summary of the invention does not enumerate all of the necessary features of the present invention, and sub-combinations of these features may be the inventions. 
       ADVANTAGES OF THE INVENTION 
       [0016]    According to the present invention, the most suitable image according to the environment can be displayed to the user. 
       BEST MODE FOR CARRYING OUT THE INVENTION 
       [0017]    Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims, and any combinations of features described in the embodiments are not essential in order to solve problems of the invention. 
         [0018]      FIG. 1  illustrates an entire configuration of a display system  1 . The display system  1  includes a physical medium  20  on which a code image  10  is attached, and a display apparatus  30 . The physical medium  20  is a magazine in the present embodiment, or alternatively, it may be goods having a surface on which the code image  10  can be attached, for example, a newspaper, an electric appliance, a wall, or the like. The code image  10  is attached on the surface of the physical medium  20  by printing or the like, and is an image including a code indicative of the information to be supplied to a user. The code image  10  may be an image that the user cannot visually recognize in the state of being attached onto the physical medium  20 . For example, the code image  10  is printed with a special ink, which does not display the image under a normal light, but displays a light image under a predetermined light, such as infrared light or ultraviolet light, and is not visible with human being&#39;s eyes, but may be shot by irradiating an auxiliary light, such as infrared light or ultraviolet light. Such the code image  10  is an example of an image pattern in accordance with the present invention. 
         [0019]    The display apparatus  30  scans the code image  10  and displays a display object according to contents thus scanned. 
         [0020]      FIG. 2  shows an example of the code image  10  in which information showing the information to be supplied to the user is indicated with a QR code. 
         [0021]    The code image  10  includes an identification code for designating a storage location of an image to be displayed to the user, a type of the image, or the like. Additionally, the code image  10  may include attribution information for designating a type of a status parameter of an external environment to be acquired by the display apparatus  30  that has scanned the code image  10 . 
         [0022]    Here, the status parameter of the external environment is information indicative of a status of the external environment of the display apparatus  30 , and specifically, it is information, such as a time in acquisition, a date in acquisition, a day of the week in acquisition, a latitude and a longitude of the display apparatus, a brightness around the display apparatus, a temperature outside the display apparatus, a humidity outside the display apparatus, an acceleration applied to the display apparatus, a sound around the display apparatus, an orientation of the display apparatus, an atmospheric pressure around the display apparatus, or the like. The attribution information includes information for designating at least one of these status parameters. An originator of the code image  10  can arbitrarily designate any combinations of the status parameters to be acquired by the display apparatus  30  with the code image  10 . Note herein that, the code image  10  is not limited to the QR code, but may be a bar code or the other two-dimensional code. 
         [0023]      FIG. 3  shows a configuration of the display apparatus  30 . The display apparatus  30  includes a shooting unit  31 , a scanning unit  32 , an acquisition unit  33 , a decision unit  34 , a database  35 , and a display unit  36 . 
         [0024]    The shooting unit  31  shoots an object to be shot and generates a captured image. The shooting unit  31  supplies the captured image to the decision unit  34 . The scanning unit  32  scans the code image  10 . The scanning unit  32  supplies the code image  10  thus scanned to the decision unit  34 . 
         [0025]    The acquisition unit  33  acquires one or a plurality of status parameters designated by the decision unit  34  and supplies the acquired status parameter to the decision unit  34 . The acquisition unit  33  includes an environmental sensor  37 , a timer unit  38 , and a GPS unit  39 , for example. The acquisition unit  33  acquires output values from the environmental sensor  37 , the timer unit  38 , and the GPS unit  39 . The environmental sensor  37  measures, for example, the brightness around the display apparatus  30 , the external temperature, the external humidity, the acceleration, the sound, the orientation, the atmospheric pressure, the smell, or the like. The timer unit  38  outputs the time, the date, and the day of the week. The GPS unit  39  outputs the latitude and the longitude of the display apparatus  30 . 
         [0026]    The decision unit  34  determines the display object to be presented to the user based on the code image  10  supplied from the scanning unit  32 , according to the status parameter acquired by the acquisition unit  33 . The database  35  manages data serving as a base of the display object generated by the decision unit  34 . The display unit  36  displays the display object generated by the decision unit  34 . 
         [0027]      FIG. 4  shows a flow chart of the process of the display apparatus  30 . 
         [0028]    First, the display apparatus  30  scans the code image  10  according to a user&#39;s operation (Step S 10 ). Subsequently, the decision unit  34  determines whether or not the scanned code image  10  is larger than a standard size (Step S 11 ). If the scanned code image  10  is larger than the standard size, the decision unit  34  proceeds to Step S 12 , and if not, it proceeds to Step S 17 . The decision unit  34  decodes the code image  10  scanned by the scanning unit  32 , and recognizes the identification code and the attribution information included in the code image  10  (Step S 12 ). Subsequently, the decision unit  34  issues an acquisition request of one or a plurality of status parameters designated by the attribution information, to the acquisition unit  33  (Step S 13 ). Subsequently, the acquisition unit  33  acquires the status parameter in response to the request from the decision unit  34 , and transmits the acquired status parameter to the decision unit  34  (Step S 14 ). 
         [0029]    Subsequently, the decision unit  34  extracts the identification code included in the code image  10  and the image information specified by the acquired status parameter, by retrieving the database  35  (Step S 15 ). Subsequently, the decision unit  34  generates the display object based on the extracted image information (Step S 16 ). For example, the decision unit  34  generates the display object, by treating and changing the image specified by the identification code, according to the acquired status parameter. Meanwhile, when a plurality of images are allocated to one identification code to be managed, the decision unit  34  selects any one image among the images currently allocated according to the status parameter, and generates the display object based on the selected image. Subsequently, the display unit  36  displays the display object generated by the decision unit  34  and the captured image generated by the shooting unit  31  to the user in such a manner that the former overlaps with the latter (Step S 17 ). Incidentally, if it is determined at Step S 11  that the code image  10  is smaller than the standard size, the captured image is displayed as it is (Step S 17 ). 
         [0030]    According to this display system  1 , the optimum image according to the external environment of the display apparatus  30  can be displayed to the user. Incidentally, the decision unit  34  may display the display object independently. 
         [0031]      FIG. 5  shows a block diagram of an information processing apparatus  40  serving as the display apparatus  30 . The information processing apparatus  40  includes a camera unit  41 , a processor  43 , a monitor  44 , a key  45 , a communication unit  46 , a memory unit  47 , the environmental sensor  37 , the timer unit  38 , and the GPS unit  39 . The camera unit  41  receives light from the image object to generate the captured image. Additionally, the camera unit  41  receives light from the code image  10  to generate the image data of the code image  10 . For example, the camera unit  41  irradiates a fill light, such as ultraviolet light or infrared light, to the code image  10  that the user cannot visually recognize, and receives light emitted by the code image  10  resulting from the irradiation of the fill light to generate the image data. The camera unit  41  includes a lens  52  operable to converge light from the image object and the code image  10 , a filter  54  allowing ultraviolet light or infrared light to pass through in the case of shooting the code image  10 , an image sensor  56  operable to convert the light which has passed through the filter  54  into electric information, and an irradiation unit  58  operable to irradiate the fill light to the code image  10 . This camera unit  41  implements functions of the shooting unit  31  and the scanning unit  32  of the display apparatus  30 . 
         [0032]    The processor  43  executes a program stored in a RAM  43 - 1 , a ROM  43 - 2 , or the like, and performs control for each unit of the information processing apparatus  40 . The processor  43  operates the information processing apparatus  40  as the display apparatus  30  by controlling each unit. The monitor  44  displays the image to the user. The monitor  44  implements a function of the display unit  36  of the display apparatus  30 . The key  45  receives an operation input from the user. The communication unit  46  communicates with an external server of the display apparatus  30  or other apparatuses via a network. The memory unit  47  stores the image data to be supplied to the user. The memory unit  47  may be provided inside the display apparatus  30 , or may be connected therewith via the communication unit  46  while being provided on a network. 
         [0033]    The environmental sensor  37  includes, as one example, a brightness sensor for measuring the brightness around the display apparatus  30 , a temperature sensor for measuring the external temperature, a humidity sensor for measuring the external humidity, an acceleration sensor for measuring the acceleration, a sound volume sensor for measuring the sound volume, an orientation sensor for detecting the terrestrial magnetism to measure the orientation, an atmospheric pressure sensor for measuring the atmospheric pressure, a smell sensor for detecting the smell, or the like. The environmental sensor  37  outputs a measured external environment status in response to an acquisition request from the processor  43 . The timer unit  38  outputs the current time, the date, and the day of the week in response to the acquisition request from the processor  43 . The GPS unit  39  outputs latitude and longitude information at the current position in response to the acquisition request from the processor  43 . 
         [0034]    The program installed in such an information processing apparatus  40  is provided by the user via a recording medium or a network. The program is executed in the processor  43 . The program, which is installed in the information processing apparatus  40  and causes the information processing apparatus  40  to operate as the display apparatus  30 , is provided with an image shooting module, a scanning module, an acquisition module, a generating module, a database module, and a display module. These program products or modules work with the processor  43  or the like, and causes the information processing apparatus  40  to operate as the shooting unit  31 , the scanning unit  32 , the acquisition unit  33 , the decision unit  34 , the database  35 , and the display unit  36 , respectively. 
         [0035]    The program or modules shown above may be stored in an external storage medium. As the storage medium, other than a flexible disk and a CD-ROM, an optical recording medium such as DVD, CD, or the like, a magneto optic recording medium such as MO or the like, a tape medium, a semiconductor memory such as an IC card or the like may be used. Moreover, the memory apparatus such as a hard disk, a RAM, or the like, provided in a server system connected to a private telecommunication network or the Internet may be used as the recording medium to provide the program to the information processing apparatus  40  via the network. 
         [0036]      FIGS. 6 and 7  show an advertisement system, which is one of application examples of the display system  1 . Note herein that, in  FIGS. 6 and 7 , the area surrounded by the dotted line represents a part of a magazine used as the physical medium  20  in this application example. More specifically, in the area surrounded by the dotted line, an article of a beer drink that is a new product is described, and the code image  10  for presenting an advertisement of the beer drink to the user, which is printed with a special ink that cannot be visually recognized by human being&#39;s eyes, is also described. 
         [0037]      FIG. 6  shows the display unit  36  in the situation before displaying the advertisement. In the case where the magazine as the physical medium  20  is shot, the decision unit  34  of the display apparatus  30  allows the display unit  36  to display the content of the article on the display unit  36 , and also a pointer  60  for indicating that advertisement information is present in a position on the display image where the code image  10  is attached. As a result, the display apparatus  30  can make the user recognize the presence of the code image  10 . Moreover, when the size of the code image  10  to an angle of field is smaller than a reference size, the decision unit  34  may display the pointer  60  indicative of the presence of the advertisement information. This makes it possible to make the user recognize the presence of the code image  10  even when the content of the code cannot be recognized. Additionally, the decision unit  34  of the display apparatus  30  may display an explanation character string  61  for indicating an operating instruction when the user wants to see the content of the advertisement, along with the pointer  60 , on the display unit  36 . 
         [0038]      FIG. 7  shows the display unit  36  in the situation after displaying the advertisement. In the case where the operation for displaying the advertisement or the like is made by the user while the pointer  60  is being displayed, and so on, the decision unit  34  of the display apparatus  30  acquires a predetermined advertisement image designated by the code image  10  from the database  35  and allows the display unit  36  to display it. In this instance, the decision unit  34  acquires the status parameter and switches the advertisement image to be displayed according to the acquired status parameter. For example, if the advertisement of the beer drink is displayed, the decision unit  34  will acquire the external temperature as the status parameter. As one example, when the atmospheric temperature is high, the decision unit  34  may cause to display foodstuffs, which are delicious to eat in a hot season, with the beer drink, and the background of the beer drink may be set to an image of a summer sea or the like. Meanwhile, when the external temperature is low, the decision unit  34  may cause to display foodstuffs, which are delicious to eat in a cold season, with the beer drink, and the background of the beer drink may be set to an image of the north pole or the like. By switching the advertisement image according to the status parameter like this, the display apparatus  30  can display the advertisement of the most suitable content to the user according to the external environment. 
         [0039]      FIG. 8  shows a virtual insect collecting system  70  for providing the user with a pseudo animate thing collecting attraction, which is one of the application examples of the display system  1 . The virtual insect collecting system  70  is provided with a building  72  used as the physical medium  20 , and the portable display apparatus  30 . 
         [0040]    The building  72  has therein an attraction space for forming such a pseudo situation that insects can be collected in a forest, a field of grass, or the like. Moreover, inside the building  72 , the code image  10  including a code for identifying a type of the insects is attached at a large number of locations where the insects are likely to exist. The user has the display apparatus  30  in its hand, and looks for the insect, with holding up the display apparatus  30  to the location where the insect is likely to exist. While the user is looking for the insect, the display apparatus  30  shoots the environment while irradiating a fill light, such as infrared light. When the code image  10  attached to the attraction space is recognized, the display apparatus  30  will then display a pointer on the display unit  36 , or will sound from a speaker to thereby notify the user that the insect has been discovered. When a predetermined capture operation is made by the user after discovering the insect, the display apparatus  30  downloads data regarding the discovered insect from, for example, the database  35  to register them into the internal memory, and displays the image of the insect or the like according to the user&#39;s operation after that. As a result, the display apparatus  30  can make the user experience of having caught the insect in pseudo. 
         [0041]    Here, when the insect is discovered (when the code image  10  is recognized), the decision unit  34  of the display apparatus  30  changes a type of insects to be displayed according to the status parameter, such as the time, the external brightness, or the like when the insect is discovered. Even when the same code image  10  is recognized, the decision unit  34  generates the display object so that a different insect may be discovered according to external temperature of the display apparatus, the external humidity of the display apparatus, the brightness around the display apparatus, the time, or the like, in scanning the code or the like. Hence, even when the insect is discovered at the same position in the attraction space, the display apparatus  30  makes the different insects appear in the morning and night, makes a very rare insect appear at a certain specific time, or makes different insects appear in summer and winter. Thus, the display system  1  can provide the real virtual insect collecting system  70  that the user can enjoy. 
         [0042]    Note herein that, when the insect is caught, the display apparatus  30  may set the caught insect as an object of a training game program, set the caught insect as an object of a fighting game for making it fight with an insect that other user has, set the caught insect as an object of a pseudo specimen of insects by registering it into the database on the network, or set the caught insect as an object of an exchange with other user. 
         [0043]    Further in collecting the insect, the decision unit  34  of the display apparatus  30  may switch and display a display object for indicating that the insect has been captured, and a display object for indicating that the insect has been escaped, depending on the status parameter. Moreover, the decision unit  34  may change motion of the insect displayed on the display object according to the status parameter. Moreover, when the display object of the insect has been generated based on the code image  10  of the same type in the past, the decision unit  34  may generate the display object of the insect with a growth degree according to the number of detection times of the code image  10 . Moreover, when the code image  10  with the same code as the code image  10  acquired in the past is acquired, or when a code image with the same code is acquired at predetermined times, the decision unit  34  may not generate a display object for displaying the same insect as that displayed according to the code image  10  of the code. 
         [0044]    Additionally, a function for managing the display object generated by the decision unit  34  is previously provided in the server on the network. The communication unit  46  of the display apparatus  30  transmits to the server at least one information according to the scanned code image  10 , and information according to the display object generated by the decision unit  34 . The display apparatus  30  receives from the server information on whether or not the display apparatus  30  or other display apparatus has generated a display object of the same insect based on the same code image  10  in the past. When the display apparatus  30  or other display apparatus has generated the display object of the same insect based on the same code image  10  in the past, the decision unit  34  may not generate the display object for displaying the insect according to the code indicated in the code image  10 , or may increase probability of not generating the display object for displaying the insect according to the code indicated in the code image  10 . Note herein that, while the virtual insect collecting system  70  has been described as an example of the animate thing collection attraction, the display system  1  may be applied to the collection attraction of other animate things. 
         [0045]      FIGS. 9 and 10  show a modification of the virtual insect collecting system  70 , using a book  80  as the physical medium  20  on which the code image  10  is attached.  FIG. 9  shows a situation before holding up the display apparatus  30  to the book  80 , and  FIG. 10  shows a situation where the display apparatus  30  is held up to the book  80 . 
         [0046]    In the example shown in  FIGS. 9 and 10 , a forest or the like is printed on the book  80  with a normal ink, instead of the structure  72  shown in  FIG. 8 , and the code image  10  is printed with the special ink thereon. This example makes it possible for the user to freely enjoy the pseudo insect collecting at home or the like. 
         [0047]      FIG. 11  shows an appearance of a display apparatus  90  as a modification of the display apparatus  30 . Members in the display apparatus  90  having the same symbols as those of the display apparatus  30  have almost the same function and configuration as those of the display apparatus  30  in the display apparatus  90 , so description thereof will be omitted hereinafter except for a different point. 
         [0048]    The display apparatus  90  includes a main body  92 , and an external unit  94 . The external unit  94  is detachably fitted in a slot  96  formed in the main body  92 . The external unit  94  is electrically connected with the main body  92  when the external unit  94  is fitted in the slot  96 , and the display apparatus  90  serves as a display apparatus similar to the display apparatus  30 . 
         [0049]      FIG. 12  shows a block diagram of the display apparatus  90 . The display apparatus  90  has the slot  96  to which the external unit  94  including a program memory  98  and the environmental sensor  37  is connected. The program memory  98  stores a program for causing the information processing apparatus to operate as the display apparatus  90 . The program stored in the program memory  98  will be scanned by the processor  43  when the main body  92  is attached thereto. The processor  43  executes the program product thus scanned. 
         [0050]    The environmental sensor  37  includes sensors, such as the atmospheric temperature sensor or the humidity sensor, for measuring the status parameter, such as atmospheric temperature, humidity, or the like requested by the program stored in the program memory  98 . Since in the display apparatus  90 , requested sensors are accommodated in the environmental sensor  37  of the external unit  94 , it is possible easily, for example, to add a function for acquiring the status parameter, to change the sensor function by upgrading the program, or the like. Meanwhile, the shooting unit  31  (camera unit  41 ), the timer unit  38 , and the GPS unit  39  may also be incorporated in the external unit  94 . 
         [0051]    While the embodiments using the code image  10  has been described as an example of the image pattern in accordance with the present invention as above, the image pattern may indirectly include a code using a digital watermark instead of a form in which the code information is directly included. Meanwhile, the display apparatus  30  may take in an image pattern not including the code to thereby perform, according to the status parameter, a processing or a change to the image pattern thus taken. Moreover, while the display apparatus  30  for displaying the image as the embodiment has been described, a sound may be outputted or a character string may be outputted. 
         [0052]    Moreover, while the present invention has been described using the embodiments, the technical scope of the present invention is not limited to the scope described in the aforementioned embodiments. It is obvious to those skilled in the art that various modification or improvement may be added to the aforementioned embodiments. It is clear from the description of claims that such aspects to which modification and the improvement are added can also be included in the technical scope of the present invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0053]      FIG. 1  illustrates an entire configuration of a display system  1  in accordance with an embodiment of the present invention; 
           [0054]      FIG. 2  illustrates a code image  10  represented with a QR code; 
           [0055]      FIG. 3  illustrates a configuration of a display apparatus  30  in accordance with the present embodiment; 
           [0056]      FIG. 4  illustrates a flow chart of the process of the display apparatus  30 ; 
           [0057]      FIG. 5  illustrates a block diagram of an information processing apparatus  40  serving as the display apparatus  30 ; 
           [0058]      FIG. 6  illustrates the display unit  36  in the situation before displaying an advertisement when the display system  1  in accordance with the present embodiment is applied to the advertisement system; 
           [0059]      FIG. 7  illustrates the display unit  36  in the situation after displaying the advertisement when the display system  1  in accordance with the present embodiment is applied to the advertisement system; 
           [0060]      FIG. 8  illustrates a virtual insect collecting system  70  in accordance with the present embodiment; 
           [0061]      FIG. 9  illustrates a book  80  as a modification of the virtual insect collecting system  70 ; 
           [0062]      FIG. 10  illustrates the book  80  as the modification of the virtual insect collecting system  70 , and the display apparatus  30  held up to the book  80 ; 
           [0063]      FIG. 11  illustrates an appearance of a display apparatus  90  in accordance with the modification of the present embodiment; and 
           [0064]      FIG. 12  illustrates a block diagram of the display apparatus  90  in accordance with the modification of the present embodiment. 
       
    
    
     DESCRIPTION OF SYMBOLS 
       [0000]    
       
         
           
               1 : Display system 
               10 : Code image 
               20 : Physical medium 
               30 : Display apparatus 
               31 : Shooting unit 
               32 : Scanning unit 
               33 : Acquisition unit 
               34 : Decision unit 
               35 : Database 
               36 : Display unit 
               37 : Environmental sensor 
               38 : Timer unit 
               39 : GPS unit 
               40 : Information processing apparatus 
               41 : Camera unit 
               42 : Sensor 
               43 : Processor 
               44 : Monitor 
               45 : Key 
               46 : Communication unit 
               47 : Memory unit 
               52 : Lens 
               54 : Filter 
               56 : Image sensor 
               58 : Irradiation unit 
               60 : Pointer 
               61 : Explanation character string 
               70 : Virtual insect collecting system 
               72 : Structure 
               80 : Book 
               90 : Display apparatus 
               92 : Main body 
               94 : External unit 
               96 : Slot 
               98 : Program memory