JP2008017035A - Program code distribution method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily acquire a decoder suitable for the usage of each adaptor terminal according to the a format of an image to be received, or application software attached to the decoder in the network environment. <P>SOLUTION: When a digital camera 100 is mounted to a cradle device 200, a format of images recorded by the digital camera 100 is searched for. Then, the type of the data and an address are notified to a display adaptor terminal 700 or a print adaptor terminal 710, where the decoder software or application software required for dealing with the data exists. The adaptor terminal, which has received the notification, requests for the acquisition of the decoder software and application software that are required for that address and downloads those software. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a program code distribution method, and in particular, in a media data distribution system including a digital camera and a cradle device that mounts the digital camera and distributes media data such as captured still images and moving images to a network. The present invention relates to a method for distributing a program code to a network adapter for configuring a device such as a display or a printer that receives distributed media data as a system.

  In recent years, with the widespread use of digital cameras, various uses of digital cameras have been studied. For example, there is a pan head for a digital camera provided with a pan / tilt function (see Patent Document 1). In addition, there is a technique in which image data stored in the digital camera is read from the outside by providing a network function in the cradle device for the digital camera (see Patent Document 2). Also, there is a digital camera that captures an image using a wireless network such as PHS, and further allows remote control such as pan tilt and remote shutter (see Patent Document 3).

  Also, although not compatible with a network, there is a camera that is used as a surveillance camera by interval shooting or the like when a digital camera is mounted on a cradle device (see Patent Document 4).

  As described above, a technique for expanding the use of a digital camera by using a cradle device is increasing.

  Currently, most digital cameras of the compact type are provided with a color liquid crystal panel, and the photographer of the digital camera can determine the composition by continuously displaying images before shooting. By attaching the viewfinder image displayed on the color liquid crystal panel to the cradle device described above, it is possible to distribute it to the network in real time.

  Images distributed to the network can be received and displayed by a network adapter connected to a display such as a television. Thus, an image distribution system can be configured that can be used like a surveillance camera when a digital camera is normally taken out when taking a picture to take a picture, and when the photographer returns home and attaches it to a cradle device placed at home.

  Furthermore, a photograph taken when going out is also distributed to the network through the cradle device and received by the display adapter terminal, so that it can be viewed on a television connected to the adapter.

  Similarly, by receiving the photos to be distributed to the network by the printer adapter terminal connected to the printer, the photos recorded in the digital camera can be printed by a printer distant from the network. .

  In addition, various application software can be operated by each device connected to each network adapter. For example, in a display adapter terminal, an electronic album is created and displayed using a picture in a digital camera mounted on a cradle device via a network, or a moving image is edited. The printer adapter terminal prints the created electronic album.

JP 2002-199251 A JP 2004-15388 A JP-A-11-261875 JP 2004-140589 A

  As described above, a digital camera is mounted on a cradle device having a conventional network communication function, and a photographed image in the digital camera is displayed from a display connected to a display adapter terminal on the network, or a printer adapter terminal on the network. When printing a photographed image from a printer connected to the printer, there are various formats for recorded still images or moving images depending on the type of digital camera. For this reason, each adapter that receives an image to be distributed must prepare a decoder or application software accompanying it for each adapter corresponding to the format of the received image.

  An object of the present invention is to make it possible to easily obtain a decoder or application software associated therewith according to the use of each adapter terminal corresponding to the format of a received image in a network environment.

  The program code distribution method of the present invention includes an imaging device, a server device that is connected to the imaging device and distributes media data captured by the imaging device to a packet communication network, and a receiving device that receives the media data. A program code distribution method in a configured media data distribution system, a media format information search step for searching format information of media data shot using the imaging device, and a medium searched by the media format information search step And an information notification step of notifying the receiving device of address information in which necessary program codes related to the media format information are present together with the format information, and the media format information from the address information received by the receiving device Against Characterized in that to obtain the necessary program code.

  According to the present invention, in a network environment, the format of an image recorded by a digital camera when the digital camera is mounted on a cradle device is searched. Then, the display adapter terminal or the print adapter terminal is notified of the type of the data and the address where the decoding software or application software necessary for handling the data exists. The adapter terminal that has received the notification makes a decoder software and application acquisition request necessary for the address. Then, by downloading, it is possible to easily obtain a decoder or application software associated therewith according to the use for each adapter terminal corresponding to the format of the received image.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
(First embodiment)
FIG. 1 is a network connection configuration diagram of a media data distribution system. The media data distribution system includes a digital camera 100 and a cradle device 200. A display adapter terminal 700, a printer adapter terminal 710, and a storage device 720 are connected to the LAN 500. Furthermore, a file server 800 connected to the LAN 500 via a WAN such as the Internet is provided.

  Reference numeral 100 denotes a digital camera, which is normally attached to a cradle device 200 when the user goes home to take a picture with a battery or battery attached.

  Reference numeral 200 denotes a cradle device. The cradle device 200 distributes a still image such as JPEG captured by the viewfinder image of the digital camera 100 as an MPEG moving image stream or the digital camera 100 to the display adapter terminal 700 or the like via the wireless access point 600.

  Reference numeral 211 denotes an external media storage such as a CF card that can be attached to and detached from the cradle device 200. When the digital camera 100 is attached to the cradle device 200, an image taken before the attachment or an image taken in the attached state can be recorded and saved, and can be carried.

  Reference numeral 600 denotes a wireless access point that performs wireless communication with the cradle device 200 and mediates connection with the LAN 500 that is a packet communication network.

  Reference numeral 701 denotes a remote controller that operates the display adapter terminal 700 and can operate the cradle device 200 on which the digital camera 100 is mounted via the LAN 500 and the wireless access point 600.

  Reference numeral 700 denotes a display adapter terminal that receives a stream in which each medium in the digital camera 100 and the cradle apparatus 200 is distributed, decodes each medium encoded in various formats, and displays it on a connected display. .

  A printer adapter terminal 710 receives a stream in which each medium in the digital camera 100 and the cradle apparatus 200 is distributed, decodes each medium encoded in various formats, and prints it from the connected printer. .

  Reference numeral 720 denotes a storage device, which records an image taken by the digital camera 100 via the LAN 500, and can further include an application such as an electronic album for image management and search.

  Reference numeral 800 denotes a file server, which is connected via a WAN such as the Internet and is prepared so that a program code module required for the display adapter terminal 700 or the printer adapter terminal 710 can be downloaded.

  Processing operations in the configuration of the media data distribution system will be described. For example, moving images, still images, or sounds in the digital camera 100 are distributed via the cradle device 200, received by the display adapter terminal 700, and displayed on the display. Alternatively, still images and moving images are received by the printer adapter terminal 710 and printed on the printer as photographs.

  FIG. 2 is a block diagram of the digital camera 100. In FIG. 2, reference numeral 100 denotes a digital camera body. Reference numeral 101 denotes a photographic lens having a focusing function and a zoom function. Reference numeral 102 denotes a shutter having an aperture function. Reference numeral 103 denotes an image sensor such as a CCD sensor or a CMOS sensor. The light image transmitted through the image pickup lens 101, adjusted by the shutter 102, and formed on the image pickup surface is converted into an image signal by photoelectric conversion. Hereinafter, an example of a CCD will be described.

  Reference numeral 104 denotes an automatic gain control unit (hereinafter referred to as CDS / AGC), which adjusts the gain of the correlated double sampling unit that reduces the accumulated electric noise of the CCD 103 and the image signal. Reference numeral 105 denotes an A / D converter that converts an analog image signal from the CCD 103 into a digital image signal. Reference numeral 110 denotes a timing pulse generator (hereinafter referred to as TG) that outputs an operation timing pulse for controlling the charge accumulation time in the CCD 103, and is controlled by the system control unit 116.

  An image processing unit 106 performs predetermined pixel interpolation and color conversion processing on the digital image signal from the A / D converter 105. Further, the image processing unit 106 performs a predetermined calculation process using the captured digital image signal. The system control unit 116 performs TTL (through-the-lens) AF, AE, and EF (strobe pre-emission) processing on the exposure control unit 111, the focus control unit 112, and the strobe 114 based on the obtained calculation result. I do. Further, the image processing unit 106 performs predetermined arithmetic processing using the photographed digital image signal, and also performs TTL AWB processing based on the obtained result.

  Reference numeral 107 denotes a memory for storing captured still images and moving images, which has a sufficient storage capacity for storing a predetermined number of still images and moving images for a predetermined time. This makes it possible to write a large amount of images at high speed even in continuous shooting or panoramic shooting in which a plurality of still images are continuously shot. The memory 107 also has a function as a memory for displaying an image on the image display / audio output unit 109 via the D / A converter 108 and outputting sound.

  Reference numeral 109 denotes an image display / sound output unit comprising a TFT LCD or the like and a speaker. Display image data and sound data written in the memory 107 are sent to the image display / sound output unit 109 via the D / A converter 108. Displayed / outputted. By using this image display / sound output unit 109 to sequentially display captured images, an electronic viewfinder function can be realized. Further, the image display / sound output unit 109 can be arbitrarily turned on / off according to an instruction from the system control unit 116, and when the display is turned off, the power consumption of the digital camera 100 can be greatly reduced. Can do.

  Reference numeral 117 denotes an image / speech encoding unit that performs predetermined compression / decompression and multiplexing together with the digital image signal in Y, Cr / Cb format and the audio signal recorded from the microphone unit 127. The image / sound encoding unit 117 reads the image and sound stored in the memory 107 and performs compression processing or decompression processing, and writes the processed moving image / still image / sound data to the memory 107 again.

  Reference numeral 127 denotes a microphone unit, which is used as a voice input for voice recording or moving image shooting. An exposure control unit 111 controls the shutter 102, the TG 110, and the CDS / AGC 104, and has a flash light control function in cooperation with the strobe 114.

  A focus control unit 112 controls the distance measurement of the photographing lens 101. A zoom control unit 113 controls the zoom function of the photographing lens 101. A strobe 114 has an AF auxiliary light projecting function and flash light control. The exposure control unit 111 and the focus control unit 112 are controlled using the TTL method, and the system control unit 116 performs the exposure control unit 111 and the focus control unit 112 based on the calculation result obtained by calculating the captured image by the image processing unit 106. To control.

  A system control unit 116 controls the entire digital camera 100. A flash memory 121 is an electrically erasable / recordable nonvolatile memory. The flash memory 121 stores a program code for decoding the format encoded by the image / audio encoding unit 117. Also, the address information of the file server of the download destination where application software such as an electronic album and editing software associated therewith is stored is stored.

  Reference numeral 122 denotes a display unit such as a display device or a speaker that notifies the user of an operation state, a message, and the like using characters, images, sounds, and the like in accordance with program execution in the system control unit 116. Located near the portion 120. For example, it is configured by a combination of LCD, LED, sound generation element and the like.

  Reference numeral 118 denotes a mode switch, which can switch and set each function mode of the digital camera 100 such as power-off, shooting mode, and playback mode. The shooting mode includes a fully automatic mode in which all AE-related parameters are automatically set, a simple shooting mode in which AE parameters are adjusted according to shooting conditions and subjects, and an applied shooting mode in which all the AE parameters are set by the photographer himself.

  The simple shooting mode includes a portrait mode, a landscape mode, a sports mode, and the like. In portrait mode, the aperture is fixed to the open side, and the background is blurred to make the person stand out. In the landscape mode, the aperture is reduced to increase the subject depth. In the sport mode, the shutter speed is fixed to the high speed side so that a moving subject can be photographed without shaking.

  The application shooting mode includes a program AE that automatically sets the shutter speed and aperture according to the brightness of the subject, a shutter priority AE that prioritizes shutter speed, an aperture priority AE that prioritizes aperture value, and the like. is there. The photographer selects an AE mode according to each shooting situation and performs shooting.

  Reference numeral 119 denotes a shutter switch, which is turned on when the shutter button is pressed lightly at SW1, and instructs to start operations such as AF, AE, AWB, and EF processing. Furthermore, it is turned on when the shutter button is pressed deeply with SW2. As a result, the image signal read from the CCD 103 is written into the memory 107 through the development process in the CDS / AGC 104, the A / D converter 105, and the image processing unit 106. Further, the image encoding unit 117 instructs to start a series of operations of compressing and writing to the SD card 126 as a recording medium via the SD I / F 125.

  An operation unit 120 includes various buttons and a touch panel, and performs all settings related to the shooting function of the digital camera 100 using a menu button, a set button, a cross button, and the like. Reference numeral 115 denotes a power supply control unit, which includes a battery detection circuit, a DC-DC converter, a switch circuit that switches a block to be energized, and the like. The power supply control unit 115 detects the presence / absence of a battery, the type of the battery, and the remaining battery level, and supplies the necessary voltage based on the detection result and an instruction from the system control unit 116 for a necessary period. To supply.

  A battery 127 is a secondary battery such as a nickel cadmium battery or a lithium ion battery. The battery 127 can be replaced by a primary battery such as an alkaline battery. Hereinafter, an example using a battery will be described.

  Reference numeral 123 denotes a DC coupler and a battery charging unit, and when the digital camera 100 is mounted on the cradle device 200, the power is supplied to the adapter and the battery 127 in the meantime when receiving power supply via the power cable 400. A USB I / F unit 124 is a communication interface for exchanging images and control data with the cradle device 200. In the present embodiment, USB communication is shown, but other communication methods such as 1394 may be used. In this case, the USB I / F unit 124 is an interface compliant with each communication standard.

  Reference numeral 126 denotes an SD card which is a recording medium, and the captured image is written to the SD card 126 via the SD I / F 125. The SD card 126 can be another recording medium such as a CF card or a micro drive. In that case, the SD I / F 125 is an interface that conforms to the standard of each recording medium.

  FIG. 3 is a block configuration diagram of the cradle device 200. In FIG. 3, reference numeral 200 denotes a main body of the cradle apparatus. Reference numeral 201 denotes a pan driving unit which is a motor that performs panning operation of the pan head. A tilt driving unit 202 is a motor that performs a tilting operation of the camera platform. The pan driving unit 201 and the tilt driving unit 202 are each configured by a stepping motor, an ultrasonic motor, or the like.

  A pan control unit 203 controls the angle and speed of the pan driving unit 201 according to an instruction from the system control unit 209. A tilt control unit 204 controls the angle, speed, and the like of the tilt drive unit 202 according to an instruction from the system control unit 209.

  A power supply unit 205 supplies power via the power cable 400 when the digital camera 100 is attached to the cradle device 200. When the digital camera 100 is connected to the cradle device 200 with the battery 127 attached, the power supply unit 205 supplies power for charging the battery 127.

  Reference numeral 206 denotes a communication interface USB I / F that exchanges images and control data with the digital camera 100. A flash memory 212 is an electrically erasable / recordable nonvolatile memory. An operation unit 210 includes various buttons and a touch panel. For example, when a switch button 210 is pressed, an image recorded on the SD card 126 of the digital camera 100 is converted into a CF card of a recording medium attached to the cradle device 200. The image is copied to 211. Alternatively, certain functional operations of the cradle device 200 such as transferring an image to the display adapter terminal 700 can be started via the wireless LAN I / F 207, the wireless access point 600, and the LAN 500.

  Reference numeral 211 denotes a CF card that is a recording medium, and writes an image captured by the digital camera 100 to the CF card 211 via the USB I / F 206 and the CF I / F 208 by communication using the USB 300. Alternatively, the image written in the CF card 211 is transferred to the display adapter terminal via the CF I / F 208, the wireless LAN I / F 207, the wireless access point 600, and the LAN 500. The CF card 211 can be another recording medium such as an SD card or a micro drive. In that case, the CF I / F 208 is an interface that conforms to the standard of each recording medium.

  Reference numeral 207 denotes a wireless LAN I / F, which measures adaptation of wireless communication with the wireless access point 600 by the antenna unit 213. Reference numeral 209 denotes a system control unit that controls the entire cradle apparatus 200. The system control unit 209 instructs the pan control unit 203 and the tilt control unit 204 to control the pan head. Further, detection and instruction are performed with respect to each unit of the power supply unit 205, USB I / F 206, CF I / F 208, and wireless LAN I / F 207.

  FIG. 4 is a block configuration diagram of the display adapter terminal 700. In FIG. 4, reference numeral 700 denotes a main body of the display adapter terminal. Reference numeral 701 denotes a remote controller for operating the display adapter terminal. Reference numeral 707 denotes a remote control light receiving unit that receives a signal from the remote control 701.

  A LAN I / F unit 702 is an interface with a network via the LAN 500 and receives media data distributed from the cradle device 200 or the storage device 720.

  An image processing decoding unit 703 decompresses and decodes image data distributed from the cradle device 200 or the storage device 720 based on a predetermined compressed method. If the received image data is RAW data that has not been subjected to image processing, development processing is performed and the image data is sent to the video I / F unit 704.

  Reference numeral 706 denotes a flash memory that is an electrically erasable / recordable nonvolatile memory that records and saves microcode and other application software for image signal processing or decoding by the image processing decoding unit 703. I can keep it.

  Reference numeral 708 denotes a system control unit that controls the entire display adapter terminal 700. The system control unit 708 loads the image signal processing or decoding microcode recorded and stored in the flash memory 706 at startup to the image processing decoding unit 703 for operation. Further, when the media data distributed from the cradle device 200 or the storage device 720 is sent as audio compressed data, it is decompressed and decoded based on a predetermined compressed method and sent to the audio I / F unit 705.

  In addition, the system control unit 708 loads application software recorded and stored in the flash memory 706 to execute applications such as an electronic album and image editing.

  Reference numerals 704 and 705 denote a video I / F unit and an audio I / F unit, respectively, which output video and audio to a display such as a television connected to the display adapter terminal 700.

  The number of devices connected to the network of the cradle device 200, the wireless access point 600, the display adapter terminal 700, the printer adapter terminal 710, and the storage device 720 is not limited to the example shown in FIG. There may be many as long as it can be identified by an address or the like. The LAN 500 may be any network such as the Internet or an intranet that has a sufficient bandwidth for passing camera control signals and compressed images. The display adapter terminal 700 is assumed to be a personal computer, a mobile phone, a PDA, or a network-compatible television. Therefore, the physical connection form to the LAN 500 may be not only wired but wireless, but the physical form is not particularly limited as long as it is connected in a protocol manner.

  An operation of the media data distribution system after the digital camera 100 is mounted on the cradle device 200 with the above configuration will be described. FIG. 5 shows a program code distribution operation procedure in the media data distribution system of the first embodiment. First, the digital camera 100 is taken out, a still image or a moving image is taken, a sound is recorded, and the digital camera 100 is attached to the cradle device 200 after returning home. At that time, media data in various formats such as JPEG and RAW formats for still images, MPEG4 for moving images, MP3 for audio, etc. depending on camera functions and photographer's preference is recorded on the SD card 126 in the digital camera 100. The

  When the digital camera 100 is attached to the cradle device 200, the system control unit 209 of the cradle device 200 detects that the digital camera 100 is attached through the USB 300. The detected system control unit 209 similarly requests the format information of the media data recorded in the digital camera 100 from the system control unit 116 of the digital camera 100 through the USB 300.

  Upon receiving the request, the system control unit 116 of the digital camera 100 searches the format information of the media data recorded on the SD card 126. Then, along with the result, a decoding program code corresponding to the format of the media data recorded in the SD card 126 stored in the flash memory 121 and the download destination where application software such as an electronic album and editing software associated therewith is placed. The file server address information is transferred to the system control unit 209 of the cradle apparatus 200 through the USB 300.

  The system control unit 209 transfers the transferred information to the display adapter terminal 700 via the wireless LAN I / F 207, the wireless access point 600, and the LAN 500. At this time, when another adapter terminal such as a printer adapter terminal exists on the LAN 500, this information is also transferred to the printer adapter terminal. These adapter terminals are performed by holding their presence in advance in the system control unit 209 of the cradle device 200. However, even within a limited range such as a home LAN, it is possible to cope by broadcasting the above information even if the existence is not known beforehand.

  The transferred information is received by the system control unit 708 of the display adapter terminal 700 via the LAN 500. The received system control unit 708 returns a notification of confirmation notifying that the information has been received to the system control unit 209 of the cradle apparatus 200.

  If there is no response from the display adapter terminal 700 within a certain period of time, the system control unit 209 determines that the display adapter terminal 700 is not turned on and sends a Wake on LAN signal. Thereafter, when a reply is received from the display adapter terminal 700, the above information is transferred to the display adapter terminal 700 again.

  Upon receiving the information, the system control unit 708 of the display adapter terminal 700 makes a download request for the program code module to the file server 900 specified by the download destination address in the information. The download request is made together with the information from the cradle apparatus 200 that the terminal is a display adapter terminal.

  Upon receiving the request, the file server 900 transfers to the display adapter terminal 700 a program code for decoding the requested format and an application program code associated therewith. The display adapter terminal 700 receives the transfer by the system control unit 708 via the LAN I / F unit 702 and stores the received program code in the flash memory 706.

  When the display adapter terminal 700 is activated, the decoded program code related to the image among the received program codes is loaded into the image processing decoding unit 703 and executed. The decoding program code related to sound and other application program codes are executed by its own CPU. As a result, an image shot and encoded by the digital camera 100 can be decoded and displayed on a display device, and further, application software such as an electronic album and moving image still image editing can be executed.

(Second Embodiment)
As a second embodiment, referring to FIG. 6, the download destination where the decoding program code to be notified to the display adapter terminal 700 and the application program code associated therewith is the flash memory 121 in the digital camera 100 Will be explained. The operation procedure is the same as that described above except that the download destination device is not the file server 900 but the digital camera 100.

  Furthermore, the executable state of the application program code transferred in both the first embodiment and the second embodiment can be restricted only when the digital camera 100 is mounted on the cradle device 200. In this case, an execution key is provided in the transferred application program code, and the removal of the digital camera 100 from the cradle device 200 causes the system control of the display adapter terminal 700 in the same manner as described above. Section 708 is notified. Then, the execution key of the application program code is canceled to make it impossible to execute.

  The communication between the cradle device 200 and the display adapter terminal 700 is basically performed using TCP / IP, but can also be performed according to an application communication protocol such as HTTP or SIP.

  Furthermore, recently, a digital camera 100 equipped with a wireless LAN function has been put on the market. In the case of this type of digital camera, the cradle device 200 as described above has a configuration in which the digital camera 100 is attached and detached. You do not have to take it.

  A digital camera of such a model is equipped with a wireless LAN I / F and an antenna inside, and as a server device having the same block configuration as the cradle device 200 shown in FIG. Communication with F207 is performed. Communication can be realized by using a protocol such as TCP / IP and operating in the same manner as the data transmission / reception via the USB 300 described above. In this case, the address information of the download destination file server where the decoding program code and the application software associated therewith are placed may be sent when a communication session is established between the digital camera 100 and the server device.

  An object of the present invention is to supply a storage medium storing software program codes for realizing the functions of the above-described embodiments to a system or apparatus, and the computer (or CPU or MPU) of the system or apparatus stores the storage medium. Needless to say, this can also be achieved by reading and executing the program code stored in.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code itself and the storage medium storing the program code constitute the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (basic system or operating system) running on the computer based on the instruction of the program code. Needless to say, a case where the functions of the above-described embodiment are realized by performing part or all of the actual processing and the processing is included.

  Further, after the program code read from the storage medium is written to a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

It is a network connection block diagram of a media data distribution system. It is a block block diagram of a digital camera. It is a block block diagram of a cradle apparatus. It is a block block diagram of a display adapter terminal. It is a figure which shows the program code delivery operation | movement procedure in the media data delivery system of 1st Embodiment. It is a figure which shows the program code delivery operation | movement procedure in the media data delivery system of 2nd Embodiment.

Explanation of symbols

100: Digital camera 200: Cradle device 211: External media storage 500: LAN
600: Wireless access point 700: Display adapter terminal 701: Remote controller 710: Printer adapter terminal 720: Storage device 800: File server 201: Pan drive unit 202: Tilt drive unit 203: Pan control unit 204: Tilt control unit 205: Power supply Supply unit 206: USB I / F unit 207: Wireless LAN I / F unit 208: CF card I / F unit 209: System control unit 210: Switch button 211: CF card 212: Flash memory 213: Antenna unit

Claims (5)

A program in a media data distribution system comprising an imaging device, a server device that is connected to the imaging device and distributes media data captured by the imaging device to a packet communication network, and a receiving device that receives the media data A code delivery method,
A media format information search step for searching format information of media data shot using the imaging device;
An information notifying step of notifying the receiving device of address information in which necessary program codes related to the media format information are present together with the media format information searched by the media format information searching step;
A program code distribution method, comprising: obtaining a program code required for the media format information from the address information received by the receiving device.   2. The program code distribution method according to claim 1, wherein a display device is connected to the receiving device, and the receiving device acquires a program code necessary for display from the address information.   2. The program code distribution method according to claim 1, wherein a printing device is connected to the receiving device, and the receiving device obtains a program code necessary for printing from the address information.   The said receiving apparatus sends the attribute of the apparatus with which this receiving apparatus is connected with respect to the said address information which received the notification by the said information notification process, The program code corresponding to this attribute is acquired. The program code distribution method according to 1.   2. The program code according to claim 1, wherein the program code acquired by each receiving device configured on the network can be activated only when the imaging device is connected to the server device. Delivery method.

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