WO2006013794A1 - 画像閲覧方法及び画像配信方法 - Google Patents
画像閲覧方法及び画像配信方法 Download PDFInfo
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- WO2006013794A1 WO2006013794A1 PCT/JP2005/013965 JP2005013965W WO2006013794A1 WO 2006013794 A1 WO2006013794 A1 WO 2006013794A1 JP 2005013965 W JP2005013965 W JP 2005013965W WO 2006013794 A1 WO2006013794 A1 WO 2006013794A1
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- image
- browsing
- images
- frames
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- 238000000034 method Methods 0.000 title claims description 78
- 238000004891 communication Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 23
- 238000003384 imaging method Methods 0.000 claims description 5
- 238000002716 delivery method Methods 0.000 claims 2
- 230000006870 function Effects 0.000 description 26
- 238000010586 diagram Methods 0.000 description 13
- 238000012546 transfer Methods 0.000 description 8
- 230000001413 cellular effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00347—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with another still picture apparatus, e.g. hybrid still picture apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6181—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via a mobile phone network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
- H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet
Definitions
- the present invention relates to a technique for acquiring and displaying an image captured by a camera on a terminal such as a mobile phone via a network.
- a device called a network camera or a WEB camera has an image pickup sensor and a WEB server function and a network function. Image data captured by the image sensor can be distributed to various terminals via a network such as the Internet.
- a method of automatically updating an image a method of performing a refresh function can be considered.
- the refresh function in HTML hypertext makeup language
- HTML hypertext makeup language
- HTTP hypertext transfer protocol
- object transfer is performed once. Each time you do this, the HTTP connection is disconnected. Therefore, in order to acquire a new image, it is necessary to connect an HTTP connection again. This is a factor that delays the time until the next image is displayed when the user operates the “Update” button.
- the present invention provides a technique for allowing a new image to be browsed without requiring a complicated operation in a method for browsing an image distributed by a network camera. It is another object of the present invention to provide a technique that enables browsing of moving images as well as still images.
- the first to third aspects of the image browsing method according to the present invention are methods for browsing an image acquired via a network.
- the browsing terminal operates a program incorporated in the browsing terminal to obtain a first image from the image capturing device via a network, and the browsing terminal In parallel with the second step of displaying the first image on the display device of the viewing terminal and the second step, the program operates according to a set schedule, whereby the browsing terminal In parallel with the third step of executing a connection process with the image capturing device and the second step, the browsing terminal causes the browsing terminal to receive the second image from the image capturing device.
- a second aspect of the image browsing method according to the present invention is the first aspect, wherein the program is a program that operates on HTTP, and the connection processing is based on HTTP. Connection establishment process.
- a third aspect of the image browsing method according to the present invention is the first aspect or the second aspect, and further, the viewing terminal issues a save instruction from an operation input unit provided in the viewing terminal. And a step of storing an image currently displayed on the display device by input and stored in a storage device.
- the fourth to tenth aspects of the image browsing method according to the present invention are methods for browsing an image acquired via a network from an image capturing apparatus that always captures an image at a predetermined frame rate.
- the browsing terminal operates a program incorporated in the browsing terminal to acquire N frames of images stored in the image capturing apparatus via the network.
- a schedule that is set in parallel with the first step, the second step in which the browsing terminal displays the image for the N frames as a video on the display device of the browsing terminal, and the second step.
- the browsing terminal executes a connection process with the image capturing device, and the program operates in parallel with the second process.
- a fourth step in which the browsing terminal acquires images for a new N frames stored in the image capturing device; and the browsing terminal displays the images for the new N frames as moving images on the display device. And a fifth step.
- a fifth aspect of the image browsing method according to the present invention is the fourth aspect thereof, wherein the images for the N frames do not exceed the maximum communication buffer size of the program, and the maximum of the range. It is an image of the number of frames.
- a sixth aspect of the image browsing method according to the present invention is the fourth aspect, in which the number N of frames of an image acquired by the viewing terminal in one step is dynamically changed.
- a seventh aspect of the image browsing method according to the present invention is any one of the fourth aspect to the sixth aspect, wherein the second step is to display a moving image for the N frames.
- An eighth aspect of the image browsing method useful for the present invention is the fourth aspect to the seventh aspect.
- the fourth step is still finished.
- a message indicating that the image is being acquired is displayed to the display device. Displaying.
- a ninth aspect of the image browsing method according to the present invention is any one of the fourth to eighth aspects, wherein the program is a program operating on HTTP, and the connection The process is a connection establishment process in HTTP.
- a tenth aspect of the image browsing method according to the present invention is any one of the fourth to ninth aspects, wherein the browsing terminal further includes an operation input unit included in the browsing terminal. Storing a frame image currently displayed on the display device as a still image in a storage device by inputting a save instruction.
- the image distribution method is a method in which an image capturing apparatus that always captures images at a predetermined frame rate distributes images via a network.
- the first aspect is the first step in which the image capturing device stores and distributes N frames of images selected according to a predetermined algorithm from among the stored images; and And a second step of distributing images for a new N frames selected in accordance with the algorithm from the stored images after a lapse of a set time for the first process power.
- a second aspect of the image distribution method according to the present invention is the first aspect thereof, wherein the N frames of images do not exceed the maximum communication buffer size of the program, and the maximum frame in the range. It is a number of images.
- a connection process from the terminal to the image capturing device is performed in parallel with the process of displaying the first image on the display device of the terminal. Then, the second image is acquired. As a result, the display image is automatically switched without the user having to operate the update button or the like, which is convenient.
- the fourth to tenth aspects of the image browsing method a process of displaying a moving image on a terminal using a plurality of images acquired from an image capturing device, and In parallel, a connection process is executed from the terminal camera to the image capturing apparatus, and a plurality of images are acquired.
- a connection process is executed from the terminal camera to the image capturing apparatus, and a plurality of images are acquired.
- the first and second aspects of the image distribution method according to the present invention are suitable for the fourth to tenth aspects of the image browsing method according to the present invention.
- FIG. 1 is an overall view of an image distribution system.
- FIG. 2 is a block diagram of a network camera that is helpful in the first embodiment.
- FIG. 3 is a block diagram of a mobile phone terminal that works on the first embodiment.
- FIG. 4 is a diagram showing a processing flow that is helpful for the first embodiment.
- FIG. 5 is a block diagram of a network camera that is helpful in the second embodiment.
- Fig. 6 is a block diagram of a mobile phone terminal that is helpful in the second embodiment.
- Fig. 7 is a diagram showing a processing flow that is helpful for the second embodiment.
- FIG. 8 is a diagram showing a processing flow for displaying a still image after moving image display is completed.
- FIG. 1 is an overall view of an image browsing system that is useful for an embodiment of the present invention.
- the network camera 1 is generally called a WEB camera and includes an image capturing function, a network connection function, and a WEB server function.
- the network camera 1 is connected to the Internet 2.
- the mobile phone terminal 5 has a network connection function in addition to a voice call function as a basic function of the mobile phone.
- the mobile phone terminal 5 is connected to the mobile phone network 3 via the base station 4.
- the network camera 1 and the mobile phone terminal 5 can communicate with each other.
- the network camera 1 distributes an image captured by itself to various terminals using the W EB server function.
- the network camera 1 distributes captured images to terminals connected to the Internet 2 and various terminals connected to various networks connected via the Internet 2. It is possible.
- the mobile phone terminal 5 has a web content browsing function. The images distributed by Kucamera 1 can be viewed.
- FIG. 2 is a block diagram of the network camera 1.
- the network camera 1 includes an imaging sensor 11, an image processing unit 12, a communication unit 13, a memory 14, and a CPU 15.
- the image sensor 11 includes an optical lens, a CCD image sensor, and the like, and can capture a subject image.
- the image data output from the imaging sensor 11 is subjected to various types of image processing in the image processing unit 12.
- the communication unit 13 has a function of transmitting / receiving data to / from the Internet 2.
- the CPU 15 executes various programs stored in the memory 14.
- the memory 14 stores a Web server program (not shown), and the CPU 15 can implement the WEB Sano function in the network camera 1 by executing the WEB server program.
- FIG. 3 is a block diagram of the mobile phone terminal 5.
- the cellular phone terminal 5 includes an antenna 51, a communication unit 52, a CPU 53, a memory 54, an operation unit 55, and a display unit 56.
- the communication unit 52 has a function of transmitting and receiving data to and from the base station 4 via the antenna 51.
- the communication unit 52 includes a buffer memory 57 and has a function of temporarily storing received data.
- the CPU 53 executes various programs stored in the memory 54.
- the memory 54 stores a WEB browser program (not shown), and the CPU 53 can browse web contents by executing the web browser program.
- the memory 54 stores an image acquisition program 61.
- Image acquisition program 61 Image acquisition program
- 61 is a program that operates on HTTP, and for example, a JAVA (registered trademark) application program can be used.
- JAVA registered trademark
- Specific examples of such programs include i-appli (i-appli) for mobile phones manufactured by NTT Docomo and EZ-appli (EZ-Appli) for mobile phones manufactured by KDDI.
- the operation unit 55 includes operation buttons and a cross force for executing various functions of the mobile phone terminal 5. It is composed of one sol etc.
- the user can input various characters such as a telephone number and an e-mail address, and can perform a process of connecting to a network, a browsing operation of WEB contents, and the like.
- the display unit 56 is configured by an LCD, for example, and displays WEB content.
- the display unit 56 is also used for displaying telephone numbers and mails.
- FIG. 4 is a diagram showing a flow of processing for browsing an image distributed by the network camera 1 in the mobile phone terminal 5.
- the cellular phone terminal 5 displays an image captured by the network camera 1 as a still image.
- step S 1 is a step in which image A 1 is displayed on display unit 56 of mobile phone terminal 5.
- this step S1 is a step of displaying the image A1 stored in the web browser program power memory 54 operating on the CPU 53. The user can view the image A1 by referring to the display unit 56.
- Step S2 is a step in which the mobile phone terminal 5 establishes an HTTP connection with the network camera 1, and is a step executed in parallel with step S1. That is, step S2 is a step that is executed in parallel in the knock ground while the image A1 is being displayed.
- step S 3 the mobile phone terminal 5 acquires the image A 2 from the network camera 1.
- Step S2 and step S3 are steps in which the image acquisition program 61 is executed in accordance with a set schedule. For example, if one still image is displayed on the display unit 56 and the time is assumed to be T1, and the time required for HTTP connection processing and image acquisition processing is assumed to be T2, the disclosure time of step S1 From step (Tl-T2), step S2 can be started.
- a schedule that assumes such a time Tl and ⁇ 2 is set as a default setting. However, these schedules can be freely changed by the user.
- step S4 the mobile phone terminal 5 switches the display content on the display unit 56 from the image A1 to the image ⁇ 2.
- the web browser Switch the display image from image Al to image A2.
- step S4 an HTTP connection is established between mobile phone terminal 5 and network camera 1 in step S5, and the next image A3 is acquired in step S6. In this way, each time an image is to be acquired, an HTTP connection establishment process is performed.
- step S6 ends and acquisition of image A3 is completed
- step S7 mobile phone terminal 5 switches the display content on display unit 56 from image A2 to image A3.
- Step 8 and Step 9 are executed in parallel with Step S7, and the image A4 is acquired.
- the image acquisition program 61 automatically starts operating in the knock ground while displaying an image on the display unit 56 of the mobile phone terminal 5, and the network camera. Execute connection processing and image acquisition processing with 1. Therefore, the user of the mobile phone terminal 5 does not need to perform an operation for updating an image in order to view a new image.
- a protocol such as HTTP is used in which disconnection processing is performed each time an object is transmitted. Even in this case, according to the present invention, since the connection process is performed in the background during image display, it is possible to shorten the time until image display.
- Still images are sequentially switched and displayed on the display unit 56 of the mobile phone terminal 5 as described above. While the still image is being displayed, the user can operate the operation unit 55 to input an image storage instruction. When the CPU 53 inputs the image saving instruction, the display unit 56 The displayed image is stored in the memory 54 for storage. As a result, the user can browse through the images that are displayed in turn and save the images immediately after finding a favorite image.
- an operation button for instructing image saving is associated with one of the operation buttons on the operation unit 55, and the position of the associated operation button is displayed on the display unit. If it is displayed on 56, it is convenient. For example, it is convenient to display operation buttons for instructing image saving on the display unit 56 with a title such as “snap”.
- the mobile phone terminal 5 has switched to display still images, but in this embodiment, the mobile phone terminal 5 continuously displays a plurality of images. .
- FIG. 5 is a block diagram of the network camera 1. This network camera 1 also has a configuration similar to that of the network camera 1 in the first embodiment.
- the image sensor 11 always performs an image capturing operation at a predetermined frame rate, and the captured images are sequentially stored in the memory 14. Therefore, the memory 14 in the first embodiment does not require a large area in addition to the area for storing the program, but the memory 14 in the second embodiment has a buffer for storing a plurality of frame images. The difference is that it requires an area.
- M is an integer
- the number of image frames that can be stored varies depending on the frame rate and resolution.
- the imaging sensor 11 always performs an imaging operation.
- the image data output from the image sensor 11 is sequentially subjected to image processing in the image processing unit 12 and is sequentially stored in the memory 14.
- the memory 14 is configured, for example, as a ring buffer. When storing a new image, the oldest image is erased, so that the latest image Bl, ⁇ 2 is always stored. , ⁇ ' ⁇ Try to accumulate ⁇ .
- FIG. 6 is a block diagram of the mobile phone terminal 5. This mobile phone terminal 5 has the same configuration as the mobile phone terminal 5 in the first embodiment.
- the mobile phone terminal 5 acquires a plurality of images at a time from the network camera 1 and reproduces the plurality of images as moving images.
- the memory 57 and the memory 54 are also required to have a larger size than that of the first embodiment.
- the memory 54 can buffer K images, and the CPU 53 reproduces the images C 1 to CK buffered in the memory 54 as moving images (image C 1 to CK is one of the images B1 to BM stored in the network camera 1
- the image received from the network camera 1 is stored in the buffer memory 57 of the communication unit 52, and when an empty area is generated in the buffer area of the memory 54, the image is transferred from the buffer memory 57 to the memory 54. Is transferred and played.
- the noffer area of the memory 54 performs the same function as the ring buffer. In other words, when a new frame image is input, the old frame image power is also deleted in sequence. Therefore, the occurrence of an empty area in the noffer area indicates that the playback of the frame image stored in the noffer area has been completed and the erasable state has been reached.
- FIG. 7 is a diagram showing a flow of processing for browsing an image distributed by the network camera 1 in the mobile phone terminal 5.
- the cellular phone terminal 5 displays an image captured by the network camera 1 as a pseudo moving image.
- step S 11 is a step in which images B 1 to BN are continuously displayed as moving images on the display unit 56 of the mobile phone terminal 5. That is, N images B 1 to BN received from the network camera 1 are stored as images C 1 to CK in the buffer area of the memory 54 via the buffer memory 57. These images are displayed as moving images on the display unit 56 by a web browser and other programs operating on the CPU 53. By referring to the display unit 56, the user can view the images B1 to BN as moving images.
- Step S12 is an HTTP connection between the mobile phone terminal 5 and the network camera 1. Is a step that is executed in parallel with step S11. In other words, step S12 is a step that is executed in parallel in the knock ground while the moving image is being displayed.
- step S 13 the mobile phone terminal 5 acquires new images B 1 to BN from the network camera 1.
- the acquired images B1 to BN are stored in the buffer memory 57 of the communication unit 57 and then transferred to the memory 54.
- the network camera 1 always performs image capturing, and accumulates the latest M images B 1 to BM in the memory 14.
- the image acquisition program 61 is a program that operates on the HTTP, and the maximum communication buffer size is specified for one data transfer.
- step S 13 the maximum number of images not exceeding the maximum communication buffer size is transferred.
- N (N is an integer not exceeding M) images is the maximum number of images not exceeding the maximum communication buffer size. Therefore, the network camera 1 transmits the latest N images of the M images stored in the memory 14 to the mobile phone terminal 5.
- Step S12 and step S13 are steps in which the image acquisition program 61 is executed according to the set schedule. For example, if the time required to display N moving images is assumed to be T3, and the time required for HTTP connection processing and image acquisition processing is assumed to be T4, the time from the disclosure time of step S11 to (T3-T4) time Step S12 may be started after elapse.
- step S14 the mobile phone terminal 5 uses the newly acquired images ⁇ 1 to ⁇ as moving images on the display unit 56. indicate. That is, the web browser and other programs operating on the CPU 53 display the images C1 to CK stored in the memory 54 via the nother memory 57 on the display unit 56 as moving images.
- step S14 an HTTP connection is established between mobile phone terminal 5 and network camera 1 at step SI5, and new images B1 to BN are acquired at step S16. Is called. In this way, each time an image is to be acquired, the HTTP connection establishment process is performed, and new images B1 to BN are sequentially acquired.
- the image acquisition program 61 automatically starts operating in the knock ground while the moving image is displayed on the display unit 56 of the mobile phone terminal 5. Then, connection processing and image acquisition processing with the network camera 1 are executed. Therefore, the user of the mobile phone terminal 5 does not need to perform an operation for updating an image in order to view a new moving image. Since multiple images are acquired at a single transfer timing, it is possible to reduce the number of HTTP connections and improve the playback speed.
- the network camera 1 since the network camera 1 always captures and stores images, when receiving an image acquisition request from the mobile phone terminal 5, the network camera 1 can immediately deliver the image and transfer the image. It is possible to improve the feeding speed.
- a plurality of images are acquired and displayed by a WEB browser and an image acquisition program (for example, JAVA (registered trademark) application) operating on the WEB browser. Therefore, even in a V environment where a streaming data playback application does not operate, it is possible to play a moving image in a pseudo manner.
- an image acquisition program for example, JAVA (registered trademark) application
- the time for acquiring N images is longer than the time for displaying moving images using N images. This is influenced by the bandwidth of the communication line, but if the communication is performed using a mobile phone terminal as in the present embodiment, the time required for the image transfer speed becomes long. That is, when step S11 is completed, it is assumed that step S13 is completed.
- step S11 after the moving image display for the images B1 to BN is completed, the image BN that is the last frame is continuously displayed until step S13 is completed. Further, while this last frame is continuously displayed, a message indicating that an image is being acquired is displayed on the display unit 56. Make it. For example, a message such as “NOW LOADING” or “acquiring image” is displayed on the display unit 56.
- the still image state continues for a while and the moving image can be continuously displayed. Therefore, the user can simulate using the mobile phone terminal 5. It is possible to browse a moving image. For example, it is possible to display a moving image of about 3 frames / second, display a still image for a while, and then display a moving image of about 3 frames / second again. Also, while still images are displayed, a message indicating that images are being acquired is displayed, so there is no misunderstanding for the user.
- the moving image performance (ft) S ) indicating the moving image playback speed in the mobile phone terminal 5 has a correlation with the wait time of image acquisition, and if the weight is generated frequently, the moving image performance is improved. It is also possible to make it. For example, instead of lengthening the wait time, play the moving image in about 5 frames Z seconds.
- a moving image is displayed on the display unit 56 of the mobile phone terminal 5 as described above. While the moving image is displayed, the user can input an image saving instruction by operating the operation unit 55.
- the CPU 53 stores the frame image currently displayed on the display unit 56 in the memory 54 as a still image. As a result, the user can save the frame image immediately upon finding a favorite scene while browsing the moving image.
- an operation button for instructing image storage is associated with one of the operation buttons on the operation unit 55, and the position of the associated operation button is displayed on the display unit. If it is displayed on 56, it is convenient. For example, it is convenient to display operation buttons for instructing image saving on the display unit 56 with a title such as “snap”.
- the CPU 53 sequentially reproduces the images C1 to CK stored in the buffer area of the memory 54.
- the communication speed is very fast and the speed force buffered in the buffer memory 57 is faster than the playback speed of the moving image, there is not enough free space in the buffer area of the memory 54. Therefore, in such a case, the process of acquiring an image by communication is stopped.
- the maximum communication buffer size that can be transferred by the image acquisition program 61 corresponds to the data size that can be transferred in one data transfer in HTTP.
- the maximum communication buffer size is 150 KB and an image of 150 KB is transmitted from the network camera 1 in one transfer, if the bandwidth of the communication network is very narrow, the maximum communication buffer size I can't get the right performance.
- the cellular phone terminal 5 can dynamically change the maximum communication buffer size.
- the maximum communication buffer size can be changed automatically according to the traffic conditions of the network, and can be set manually by the user! Moyo! / ⁇
- the process of changing the maximum communication buffer size may be controlled from the mobile phone terminal 5 side, or the network camera 1 side power may be controlled.
- the image acquisition program 61 has been described as operating on HTTP.
- the protocol that the image acquisition program 61 operates in the present invention is not particularly limited. HTTP is an example. is there.
- the present invention can be applied to other protocols and protocols that are proprietary to mobile phone carriers. Even in the case of these other protocols, the connection processing of the protocol is executed in the background while displaying a still image or playing back a moving image, and the image acquisition program 61 operates on the protocol, and a new It is only necessary to acquire correct images.
- the present invention can be applied to a program called BREW (Binary Runtime Environment for Wireless) that operates on a mobile phone of KDDI.
- BREW Binary Runtime Environment for Wireless
- the network camera 1 transmits a plurality of images in response to an image acquisition request from the mobile phone terminal 5.
- the network camera 1 may transmit an image according to a predetermined schedule without using the acquisition request from the mobile phone terminal 5 as a trigger.
- the network camera 1 may transmit the maximum number of images in a range that does not exceed the maximum communication buffer size of the destination terminal.
- This transmission timing may be, for example, the time T3 and T4 as described above registered in advance as default values, or information that specifies the transmission schedule only once from the mobile phone terminal 5 for the first time. Even if you receive it.
- which frame of images to transmit among a plurality of images stored in the network camera 1 may be set in accordance with a set algorithm.
- a plurality of algorithms may be selected and an instruction for selecting an algorithm may be sent from the mobile phone terminal 5.
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- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Telephone Function (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Signal Processing For Recording (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-229486 | 2004-08-05 | ||
JP2004229486A JP4549769B2 (ja) | 2004-08-05 | 2004-08-05 | 画像閲覧方法 |
Publications (1)
Publication Number | Publication Date |
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WO2006013794A1 true WO2006013794A1 (ja) | 2006-02-09 |
Family
ID=35787080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/013965 WO2006013794A1 (ja) | 2004-08-05 | 2005-07-29 | 画像閲覧方法及び画像配信方法 |
Country Status (3)
Country | Link |
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JP (1) | JP4549769B2 (ja) |
CN (1) | CN1799263A (ja) |
WO (1) | WO2006013794A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US8671299B2 (en) * | 2011-05-26 | 2014-03-11 | Google Inc. | Delaying the initiation of transitioning to a lower power mode by placing a computer system into an intermediate power mode between a normal power mode and the lower power mode |
JP6289076B2 (ja) * | 2013-12-18 | 2018-03-07 | キヤノン株式会社 | 情報処理装置、情報処理方法及びプログラム |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1040185A (ja) * | 1996-07-23 | 1998-02-13 | Canon Inc | サーバ及び端末及びその制御方法 |
JPH1042185A (ja) * | 1996-07-23 | 1998-02-13 | Canon Inc | 撮像サーバ及びその方法及び媒体 |
JPH11161322A (ja) * | 1997-11-26 | 1999-06-18 | Omron Corp | 生産ライン監視システム |
WO2003073763A1 (fr) * | 2002-02-28 | 2003-09-04 | Sony Corporation | Serveur de camera et procede de distribution d'image |
JP2004164098A (ja) * | 2002-11-11 | 2004-06-10 | Fuji Photo Film Co Ltd | ウェブカメラ |
-
2004
- 2004-08-05 JP JP2004229486A patent/JP4549769B2/ja not_active Expired - Fee Related
-
2005
- 2005-07-29 WO PCT/JP2005/013965 patent/WO2006013794A1/ja active Application Filing
- 2005-07-29 CN CNA200580000154XA patent/CN1799263A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1040185A (ja) * | 1996-07-23 | 1998-02-13 | Canon Inc | サーバ及び端末及びその制御方法 |
JPH1042185A (ja) * | 1996-07-23 | 1998-02-13 | Canon Inc | 撮像サーバ及びその方法及び媒体 |
JPH11161322A (ja) * | 1997-11-26 | 1999-06-18 | Omron Corp | 生産ライン監視システム |
WO2003073763A1 (fr) * | 2002-02-28 | 2003-09-04 | Sony Corporation | Serveur de camera et procede de distribution d'image |
JP2004164098A (ja) * | 2002-11-11 | 2004-06-10 | Fuji Photo Film Co Ltd | ウェブカメラ |
Also Published As
Publication number | Publication date |
---|---|
CN1799263A (zh) | 2006-07-05 |
JP2006050323A (ja) | 2006-02-16 |
JP4549769B2 (ja) | 2010-09-22 |
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