JP5306152B2 - Video division reproduction method, video division reproduction apparatus, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly display images on multiple screens without increasing a load of a server and according to the arrangement and the number of display devices. <P>SOLUTION: A radio-controlled clock 47 of a master reproduction terminal 40 and a radio-controlled clock 57 of slave reproduction terminals 50 (60, 70) automatically receive standard waves transmitted from a radio wave transmitting station 10 to correct the date and time. The master reproduction terminal 40 and the slave reproduction terminals 50, 60, 70 start decoding of coding video data when internal clocks 47, 57 reach decoding start time, clip images to be reproduced by each terminal based on selection region information that is generated by the master reproduction terminal 40 and indicates a division region to be reproduced for each reproducing unit, and displays the clipped images on each of display units 46, 56 in a synchronized manner. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a video division reproduction method, a video division reproduction device, and a program for dividing one video and reproducing it on a plurality of terminals.

  In a case where one image is divided and displayed by a plurality of display devices, there are a server device, a display device, and a display method for generating and displaying an appropriate divided image according to the arrangement and number of display devices (for example, Patent Document 1).

JP 2005-301131 A

  In the prior art disclosed in Patent Document 1, a divided image creation process for displaying on each display device is performed based on information received by the server device from each display device. Therefore, there is a problem that the load on the server increases.

  The present invention has been made in consideration of such circumstances, and its object is to display each image without increasing the load on the server when one image is divided and displayed by a plurality of display devices. An object of the present invention is to provide a video division reproduction method, a video division reproduction device, and a program capable of displaying an appropriate divided image according to the arrangement and number of apparatuses.

In order to solve the above-described problem, the present invention is a video split playback method in which encoded video data distributed from a distribution server is split and displayed by one master playback terminal and at least one slave playback terminal. Te, the master playback terminal, and the location of the marks Goka video data, and vertical and horizontal division number on the display screen of the image corresponding to the number of the said one master playback terminal at least one slave reproduction device, and a selection area information indicating an area to be reproduced and displayed on Oite the display screen on the entire image, the multi-view reproduction information stored in the delivery server, and request to the distribution server, in response to the request Receiving the multi-view playback information transmitted from the distribution server; and encoding performed by the master playback terminal included in the received multi-view playback information. A step of transmitting a video distribution request to the distribution server based on a location where the image data exists, receiving encoded video data distributed from the distribution server in response to the video distribution request, and the master reproduction terminal, Transmitting to the one or more slave playback terminals a request instruction to request the distribution server for the same multi-view playback information as the multi-view playback information received from the distribution server; and the one or more slave playback terminals , based on the request instruction of the multi-view playback information from the master playback terminal, it sends a request for multi-view playback information to the distribution server, a multi-view playback information transmitted from the distribution server in response to 該要 determined And receiving the encoded video data included in the received multi-view playback information by the one or more slave playback terminals. A step of transmitting a video distribution request to the distribution server based on a location and receiving encoded video data distributed from the distribution server in response to the video distribution request; and the one or more slave playback terminals Receiving the encoded video data distributed from the distribution server, transmitting the encoded video data reception start notification to the master playback terminal, and the master playback terminal from all of the one or more slave playback terminals. Upon receiving the encoded video data reception start notification, based on the selected region information and the vertical and horizontal division number included in the received multi-view playback information, indicating the divided regions to be reproduced for each of the one or more slave reproduction device Generating reproduction area information; transmitting the reproduction area information to the one or more slave reproduction terminals; and the master
Playing terminal determines the decoding start time is the time to start decoding, and transmitting the decoded initiation time for the previous SL one or more slave reproduction end end respectively, said master reproduction terminal wherein each of the one or more slave reproduction terminal, the respective internal clocks that are of-sync is decoding start time to begin decoding of the encoded video data based on the respective reproduction area information, respectively There excised division image to be reproduced, a video division reproducing method characterized by comprising the steps of: playback display the divided image which is cut out said each of the display unit.

The present invention is the above invention, wherein the multi-view playback information further includes scenario information describing a playback procedure of the encoded video data,
Determining a scenario playback start time, which is a time at which the master playback terminal starts playback of the scenario information, and transmitting the scenario playback start time to each of the one or more slave playback terminals; each terminal and said one or more slave reproduction terminal, the respective internal clocks that are taken in synchronization is the scenario playback start time, based on the scenario information, the decoding of the encoded video data in order started, each cut out is divided video to be reproduced, characterized in that the division image obtained by cutting the further comprising the step of playback display in each display section.

According to the present invention, in the above invention, the master playback terminal holds an IP address list of the one or more slave playback terminals, and based on the number of vertical and horizontal divisions included in the multi-view playback information , The playback area information is created by allocating playback areas in the raster scan order in the order in which the terminal selection area is always the upper left corner and the selection areas of the one or more slave playback terminals are read from the IP address list. It is characterized by.

Further, in order to solve the above-described problem, the present invention provides a video division reproduction apparatus that divides and displays encoded video data distributed from a distribution server by one master reproduction terminal and at least one slave reproduction terminal. a is the master playing terminal, it marks Goka and the location of the video data, vertical and horizontal division number of the display on the screen of the image corresponding to the number of the said one master playback terminal at least one slave reproduction device When, and a selection area information indicating an area to be reproduced and displayed on Oite the display screen on the entire image, the multi-view reproduction information stored in the delivery server, request, to the request to the distribution server In response, a master-side multi-view playback information receiving means for receiving multi-view playback information transmitted from the distribution server, and included in the received multi-view playback information. Master-side encoded video data that transmits a video distribution request to the distribution server and receives the encoded video data distributed from the distribution server in response to the video distribution request based on the location of the encoded video data receiving means, multi-view playback information request instruction sent to the transmission request instructing that request to the distribution server multi-view playback information same multi-view playback information and said received from the distribution server to the one or more slave reproduction device means, the master side internal clock for measuring the time, when receiving the coded video data reception start acknowledgment from the one or more slave reproduction terminal all, the selection region information and the vertical and horizontal included in the received multi-view playback information based on the division number, and generates a reproduction area information indicating the divided region to be reproduced for each of the one or more slave reproduction terminal re An area information generating means, wherein the reproduction area information transmitting means for transmitting the reproduced region information to the one or more slave reproduction device determines the decoding start time is the time to start decoding, the one or more a synchronous reproduction controlling means for transmitting the decoding of the start time to the slave reproducing terminal respectively, and the master-side display means for displaying the decoded video and the master side internal clock is the decoding start time, the Master side decoding means for starting decoding of the encoded video data based on reproduction area information, cutting out the divided video to be reproduced, and reproducing and displaying the cut out divided video on the master side display means The one or more slave playback terminals send a request for multi-view playback information to the distribution server based on a multi-view playback information request instruction from the master playback terminal. And Shin, based on the location of the multi-view and the slave multi-view playback information receiving means for receiving the reproduction information, the coded video data included in the multi-view playback information thus received from the distribution server in response to 該要 determined Slave side encoded video data receiving means for transmitting a video distribution request to the distribution server and receiving encoded video data distributed from the distribution server in response to the video distribution request, and distributed from the distribution server. The encoded video data reception start notification transmitting means for transmitting the encoded video data reception start notification to the master reproduction terminal, and the slave side synchronized with the master side internal clock of the master reproduction terminal. When the internal clock, the slave-side display means for displaying the decoded video, and the slave-side internal clock reach the decoding start time Slave side decoding means for starting decoding of the encoded video data based on the playback area information, cutting out the divided video to be played back, and playing back and displaying the cut out divided video on the slave side display means; A video segmentation playback apparatus comprising:

According to the present invention, in the above invention, the multi-view reproduction information further includes scenario information describing a reproduction procedure of the encoded video data, and the time when the synchronous reproduction control unit starts reproduction of the scenario information The scenario playback start time is determined, the scenario playback start time is transmitted to each of the one or more slave playback terminals, and the master side decoding means sets the master side internal clock to the scenario playback start time. comes to, based on the scenario information, and starts decoding of the encoded video data in order, cut split video to re eggplant, the division image obtained by cutting the re-live in a tabular radical 113, the slave each of the decoding means, when the slave-side internal clock, which is 2.45 of the master side internal clock synchronization is the scenario reproduction start time, based on the scenario information Te, and starts decoding of the encoded video data in order, respectively cut out the division image to be reproduced, characterized by playback displays the divided image which is cut out said each of the display unit.

The present invention is the above invention, wherein the master playback terminal further comprises holding means for holding an IP address list of the one or more slave playback terminals, and the playback area information generating means is configured to store the multi-view playback information. The selection area of the master reproduction terminal is always the upper left corner based on the number of vertical and horizontal divisions included in the reproduction area in the raster scan order in the order of reading the selection area of the one or more slave reproduction terminals from the IP address list. The reproduction area information is created by allocating.

Further, in order to solve the above-described problem, the present invention provides a video division reproduction apparatus that divides and displays encoded video data distributed from a distribution server by one master reproduction terminal and at least one slave reproduction terminal. the computer, the master playing terminal, marks Goka and the location of the video data, vertical and horizontal division number of the display on the screen of the image corresponding to the number of the said one master playback terminal at least one slave reproduction device When requests the multi-view playback information held and a selection area information indicating an area to be reproduced and displayed on Oite the display screen on the entire image, the distribution server, sent from the distribution server in response to the request Multi-view playback information receiving function for receiving the received multi-view playback information, encoded video data included in the received multi-view playback information Based on the location of data, sends said video distribution request to the distribution server, master encoded video data receiving function for receiving encoded video data distributed from the distribution server in response to the video delivery request, the Multi-view reproduction information request instruction transmission function for transmitting a request instruction for requesting the distribution server the same multi-view reproduction information as the multi-view reproduction information received from the distribution server to the one or more slave reproduction terminals ; master side internal clock function, receives the encoded video data reception start acknowledgment from the one or more slave reproduction terminal all, based on the selected region information and the vertical and horizontal division number included in the received multi-view playback information, the A reproduction area information generation function for generating reproduction area information indicating a divided area to be reproduced for each of one or more slave reproduction terminals; Play area information transmitting function of transmitting the reproduction area information to the one or more slave reproduction device determines the decoding start time is the time to start decoding, the one or more slave reproduction device said to each Synchronous playback control means for transmitting the decoding start time and when the master side internal clock reaches the decoding start time, the decoding of the encoded video data is started based on the playback area information, and the division to be played back A master side decoding function for cutting out video and reproducing and displaying the cut-out divided video is realized, and the one or more slave playback terminals are configured to receive the multi-view playback information request instruction from the master playback terminal. A slave-side multi-view playback information that transmits a request for multi-view playback information to the distribution server and receives the multi-view playback information from the distribution server in response to the request. A video reception request is transmitted to the distribution server based on the presence location of the encoded video data included in the received multi-view reproduction information, and is distributed from the distribution server in response to the video distribution request. A slave-side encoded video data receiving function for receiving encoded video data, and encoded video data for transmitting an encoded video data reception start notification to the master playback terminal upon reception of encoded video data distributed from the distribution server a reception start notification transmission unit, the slave-side internal clock function to be synchronized with the master side internal clock, when the slave-side internal clock is the decoding start time, on the basis of the reproduction area information, decoding the encoded video data A slave that starts segmentation, cuts out the divided video to be reproduced, and reproduces and displays the cut out divided video on the slave side display means Is a program for causing realize and decryption functions.

  According to the present invention, when one image is divided and displayed by a plurality of display devices, an appropriate divided image is displayed without increasing the load on the server and according to the arrangement and number of the display devices. be able to.

It is a block diagram which shows the structure of the system (division reproduction | regeneration) by embodiment of this invention. It is a conceptual diagram for demonstrating the multi view reproduction | regeneration file by this embodiment. It is a figure for demonstrating the IP address for distinguishing the slave reproduction | regeneration terminal by this embodiment. It is a conceptual diagram for demonstrating reproduction area information by this embodiment. It is a conceptual diagram for demonstrating the area | region in charge of reproduction | regeneration in each reproduction | regeneration terminal 40, 50, 60, 70 by this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration start) of this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration start) of this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration start) of this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration start) of this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration start) of this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration start) of this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration by a scenario) of this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration by a scenario) of this embodiment. It is a flowchart for demonstrating the operation | movement (division reproduction | regeneration by a scenario) of this embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of a system (divided playback) according to an embodiment of the present invention. In the figure, the distribution server 20 includes a reception unit 21, a reproduction data storage unit 22, and a transmission unit 23. The receiving unit 21 receives requests from the master playback terminal 40 and the slave playback terminals 50, 60, and 70 via the network 30 and notifies the playback data storage unit 22 of the received request. The reproduction data storage unit 22 reads data according to the request received from the reception unit 21 and sends the data to the transmission unit 23.

  The reproduction data storage unit 22 stores at least a multi-view reproduction file and encoded video data. The multi-view playback file is a text file in which at least the location of the encoded video data, the number of divisions (vertical and horizontal) of the playback video, playback time, selection area information, and a scenario based on the playback time of the area are described.

  There are two types of encoded video data: navigation encoded video data for freely selecting a region to be viewed from the entire video, in whole or in part, and main encoded video data for reproducing the selected region. Consists of. These are stored in the reproduction data storage unit 22 as one encoded video data. The main encoded video data is a video having a higher resolution than the navigation encoded video data.

  The transmission unit 23 receives the data read from the reproduction data storage unit 22 and distributes it to the master reproduction terminal 40 and the slave reproduction terminals 50, 60, 70 via the network 30. The distribution server 20, the master reproduction terminal 40, and the slave reproduction terminals 50, 60, and 70 are connected via the network 30.

  There are one master playback terminal 40, at least one slave playback terminal 50, 60, and 70, and three in this embodiment. The master playback terminal 40 controls the slave playback terminals 50, 60, and 70, and performs playback control between the slave playback terminals 50, 60, and 70. The master playback terminal 40 starts and stops playback, and the slave playback terminals 50, 60, and 70 follow the master playback terminal 40.

  The master playback terminal 40 and the slave playback terminals 50, 60, and 70 are based on the selection area information that is generated by the master playback terminal 40 and indicates the divided areas that should be played back for each slave playback device 50, 60, and 70. The encoded video data is divided and reproduced. At the start of playback, the initial value selection area is used and the content starts from the beginning. The same scenario as the scenario selected by the master reproduction terminal 40 is also reproduced by the slave reproduction terminals 50, 60, and 70. Scenario playback starts from the beginning of the content.

  The radio clock 47 of the master playback terminal 40 and the radio clock 57 of the slave playback terminals 50, 60 and 70 automatically receive the standard radio wave transmitted from the radio transmitting station 10 and correct the date and time of each playback terminal. , 50, 60, and 70 start decoding (reproduction start) or scenario reproduction all at once when the designated time comes.

  The master reproduction terminal 40 includes a reproduction request unit 41, a synchronous reproduction control unit 42, a transmission unit 43, a reception unit 44, a decoding unit 45, a display unit 46, and a radio clock 47. The playback request unit 41 inputs a multi-view playback file URL. The synchronized playback control unit 42 holds a list of IP addresses of all slave playback terminals 50, 60, and 70. The synchronized playback control unit 42 creates playback area information of an area played by each playback terminal. The synchronous reproduction control unit 42 performs request control from the reproduction request unit 41, the reception unit 44, and the decoding unit 45, and request control to the reception unit 44, the decoding unit 45, and the transmission unit 43.

  The master playback terminal 40 establishes TCP / IP connection with all the slave playback terminals 50, 60, and 70. This is used to transmit at least the multi-view playback file URL, playback area information, and selected scenario selection information to each slave playback terminal 50, 60, 70. From the slave playback terminals 50, 60, 70, it is used for notification of completion of playback preparation and for receiving and returning information from the master playback terminal 40.

  The transmission unit 43 of the master reproduction terminal 40 receives the request from the synchronous reproduction control unit 42 and transmits it to the distribution server 20 or the slave reproduction terminals 50, 60, and 70 depending on the request content. More specifically, the transmission unit 43 makes a multi-view playback file distribution request and an encoded video data distribution request to the distribution server 20. At least the multi-view playback file URL, playback area information, and scenario selection information are transmitted to the slave playback terminals 50, 60, and 70.

  The receiving unit 44 receives data from the distribution server 20 and the slave playback terminals 50, 60, and 70. If the received data is encoded video data, the receiving unit 44 sends the data to the decoding unit 45; otherwise, The data is sent to the synchronized playback control unit 42.

  The decoding unit 45 receives the encoded video data from the receiving unit 44, and decodes the navigation encoded video data and the main encoded video data of the received encoded video data in units of 1 GOP (Group Of Picture). Note that 1 GOP is generally 15 frames and 0.5 seconds, but it is not always necessary. The main encoded video data is decoded based on the selection area information and the master reproduction area information, and further, the master reproduction area video is cut out based on the master reproduction area value. Further, the decoding unit 45 sends the decoded navigation video and master reproduction area video to the display unit 46.

  The display unit 46 receives the decoded navigation video and the master playback area video from the decoding unit 45, and performs playback.

  The thumbnail playback of scenario 1 and scenario 2 on the master playback terminal 40 is based on the selection area information of scenario 1 and scenario 2 described in the multi-view playback file from the navigation video decoded by the decoding unit 45. Then, the selected area video of scenario 2 is cut out and further thumbnailed.

  The display unit 46 receives the thumbnailed scenario 1 and scenario 2 selection area videos from the decoding unit 45 and plays them. The radio clock 47 automatically receives the standard radio wave transmitted from the radio transmission station 10 and corrects the date and time of the radio clock of the master reproduction terminal 40.

  Since the slave playback terminals 50, 60, and 70 have the same configuration, the slave playback terminal 50 will be described as an example. The slave reproduction terminal 50 includes a synchronous reproduction control unit 52, a transmission unit 53, a reception unit 54, a decoding unit 55, a display unit 56, and a radio clock 57. In this embodiment, there are three slave playback terminals, but the number is not limited to three.

  The synchronized playback control unit 52 performs request control from the receiving unit 54 and the decoding unit 55 and request control to the receiving unit 54, the decoding unit 55, and the transmission unit 53. The transmission unit 53 receives the request from the synchronous reproduction control unit 52 and transmits the request to the distribution server 20 or the master reproduction terminal 40 depending on the content of the request. A multi-view playback file distribution request and an encoded video data distribution request are made to the distribution server 20, while a reproduction preparation completion notification and information reception reply from the master reproduction terminal 40 are made to the master reproduction terminal 40.

  The receiving unit 54 receives data from the distribution server 20 and the master reproduction terminal 40. If the received data is encoded video data, the receiving unit 54 sends the data to the decoding unit 55. Otherwise, the synchronous reproduction control unit Send to 52. Further, the receiving unit 54 receives the playback area information of the own terminal from the master playback terminal 40.

  The decoding unit 55 receives the encoded video data from the receiving unit 54, and decodes the navigation encoded video data and the main encoded video data of the received encoded video data in parallel in units of 1 GOP. The main encoded video data is decoded based on the selection area information and the reproduction area information of the slave reproduction terminal 50 (60, 70), and further to the reproduction area value of the slave reproduction terminal 50 (60, 70). Based on this, the playback area image is cut out. Further, the decoding unit 55 sends the decoded navigation video and the playback area video of the slave playback terminal 50 (60, 70) to the display unit 56. The display unit 56 receives the decoded navigation video from the decoding unit 55 and the playback area video of the slave playback terminal 50 (60, 70) and plays back.

  The thumbnail playback of scenario 1 and scenario 2 on the slave playback terminal 50 (60, 70) is the selected area information of scenario 1 and scenario 2 described in the multi-view playback file from the navigation video decoded by the decoding unit 55. Based on this, the selected area video is cut out and further thumbnailed.

  The display unit 56 receives the thumbnail-selected scenario 1 and scenario 2 selection area videos from the decoding unit 55 and plays them. The radio clock 57 automatically receives the standard radio wave transmitted from the radio transmitting station 10 and corrects the date of the radio clock of the slave playback terminal. The master playback terminal 40 and the slave playback terminal 50 (60, 70) start decoding (start playback) or scenario playback all at once when the respective radio clocks reach the designated time.

  The radio transmission station (standard frequency station) 10 is one or both of the two locations in Japan, and transmits standard radio waves based on a cesium atomic radio clock that is said to have an error of 1 second in 100,000 years.

  FIG. 2 is a conceptual diagram for explaining a multi-view playback file. As described above, the multi-view playback file is one of the data stored in the playback data storage unit 22 of the distribution server 20, and includes at least the location where the encoded video data exists and the number of playback video divisions (vertical, horizontal). ), A text file in which a scenario based on reproduction time, selected area information, and reproduction time of the area is described.

  The multi-view playback file includes at least a content URL (location where encoded video data exists, in the example shown, “rtsp: //XXX.XXX.XXX/encoded video data”), the number of vertical divisions (selected area) , The number of divisions in the vertical direction (“2” in the example shown), the number of horizontal divisions (the number of divisions in the horizontal direction of the selected region, “2” in the example shown), the playback time (from the start of playback to the playback end time, In the example, the playback start is “0” and the playback end is “1800 (msec).” Furthermore, for each scenario, the selection area information, playback time (msec), selection area change, The change speed and the change amount are described in the order of reproduction.

  One scenario is not always described in one multi-view playback file, and a plurality of scenarios may be described as in the illustrated example. In order to distinguish the scenario, in this embodiment, the number is assigned to SCENARIO_NO from “1”, but it is not necessary to be a number. In this embodiment, there are two scenarios, but it is not necessary to have two. At the end of the scenario, the symbol “#” is described.

  The master playback terminal 40 and the slave playback terminals 50, 60, and 70 are selected areas divided with respect to the encoded video data (navigation encoded video data and main encoded video data) according to the selection area information described in the scenario. And the selected playback areas 40, 50, 60 and 70 are played back by the corresponding playback terminals 40, 50, 60 and 70.

  FIG. 3 is a diagram for explaining an IP address for distinguishing slave reproduction terminals. A unique IP address is assigned to each of the slave playback terminals 50, 60, and 70. The master playback terminal 40 identifies the slave playback terminals 50, 60, and 70 by the IP address.

  FIG. 4 is a conceptual diagram for explaining reproduction area information according to the present embodiment. FIG. 5 is a conceptual diagram for explaining a playback charge area in each of the playback terminals 40, 50, 60 and 70. Based on the number of divisions described in the multi-view playback file shown in FIG. 2, the master playback terminal 40 applies the main video and navigation video to the slave playback terminal IP address list shown in FIG. The playback areas of the playback terminals 50, 60, and 70 are allocated. As shown in FIG. 5, the upper left corner is always the area of the master playback terminal 40, and the other slave playback terminals 50, 60, and 70 are in raster scan order.

  That is, the playback area of the master playback terminal 40 is the upper left corner of the selection area, and the playback area of the slave playback terminal 50 is the upper right corner of the selection area, and the playback area of the slave playback terminal 60 is the selection area. The playback area of the slave playback terminal 70 is the lower right corner of the selected area.

  In this embodiment, the resolution of the navigation video is 400 × 200, and the selection area information (X, Y, width, height) to be cut out from the navigation video being played back is (30, 70, 260, 100). Yes, this is divided into four equal parts. Each playback area value (X, Y, width, height) in the navigation video is as follows: (30, 70, 130, 50) for the playback area value of the master playback terminal 40, and (160, 70, 130, 50), the playback area value of the slave playback terminal 60 is (30, 120, 130, 50), and the playback area value of the slave playback terminal 70 is (160, 120, 130, 50). Become.

  When the resolution of the main video is 2000 × 4000, the selection area (X, Y, width, height) is (300, 700, 2600, 1000), and the reproduction area value (X , Y, width, height) is (300, 700, 1300, 500), the playback area value of the slave playback terminal 50 is 1600, 700, 1300, 500, and the playback area value of the slave playback terminal 60 is (300 , 1200, 1300, 500), and the playback area value of the slave playback terminal 70 is (1600, 1200, 1300, 500).

Next, the operation of this embodiment will be described.
In the following description, only the slave playback terminal 50 will be described as the slave playback terminal. However, since the same operation is performed in the other slave playback terminals 60 and 70, only the reference numerals are shown in parentheses after the slave playback terminal 50.

  6 to 11 are flowcharts for explaining the operation (start of divided reproduction) of this embodiment. The master playback terminal 40 refers to the slave playback terminal IP address list held in the synchronous playback control unit 42 and establishes a TCP / IP (Transmission Control Protocol / Internet Protocol) connection with the slave playback terminal 50 (60, 70). Perform (step 401). The slave playback terminal IP address list is set in advance. Next, when the multi-view playback file URL is input to the playback request unit 41, the playback request unit 41 sends the input multi-view playback file URL to the synchronous playback control unit 42 (step 402).

  The synchronous playback control unit 42 receives the multi-view playback file URL input from the playback request unit 41, and sends the received multi-view playback file URL to the transmission unit 43 (step S403). Next, the transmission unit 43 receives the multi-view reproduction file URL from the synchronous reproduction control unit 42 and transmits a multi-view reproduction file distribution request for the received URL to the distribution server 20 (step 404).

  In the distribution server 20, the receiving unit 21 receives the multi-view playback file URL from the master playback terminal 40 via the network 30, and sends a multi-view playback file request to the playback data storage unit 22 (step 405). The reproduction data storage unit 22 receives the multi-view reproduction file URL from the reception unit 21, reads the multi-view reproduction file of the received URL, and transmits it to the transmission unit 23 (step 406). The transmission unit 23 receives the multi-view playback file from the playback data storage unit 22, and transmits the received multi-view playback file to the master playback terminal 40 via the network 30 (step 407).

  In the master playback terminal 40, the receiving unit 44 receives the multi-view playback file from the distribution server 20 via the network 30, and sends it to the synchronous playback control unit 42 (step 408). When the synchronous playback control unit 42 receives the multi-view playback file from the receiving unit 44, the synchronous playback control unit 42 sends a distribution request for the encoded video data of the content URL described in the multi-view playback file to the transmission unit 43, and The reproduction file is sent to the decryption unit 45 (step 409). The transmission unit 43 receives the encoded video data distribution request from the synchronous reproduction control unit 42, and sends the received encoded video data distribution request to the distribution server 20 via the network 30 (step 410).

  In the distribution server 20, the receiving unit 21 receives the distribution request for the encoded video data from the master reproduction terminal 40 via the network 30, and sends the received distribution request for the encoded video data to the reproduction data storage unit 22 (Step S21). 411). Next, the reproduction data storage unit 22 receives the encoded video data distribution request from the reception unit 21, reads out the requested encoded video data, and sends it to the transmission unit 23 (step 412). The transmission unit 23 receives the encoded video data transmitted from the reproduction data storage unit 22, and transmits the received encoded video data to the master reproduction terminal 40 via the network 30 (step 413).

  In the master reproduction terminal 40, the reception unit 44 receives the encoded video data transmitted from the transmission unit 23 of the distribution server 20 via the network 30, and notifies the synchronous reproduction control unit 42 of the start of reception of the encoded video data. Further, only 1 GOP of the navigation encoded video data and the main encoded video data of the encoded video data is sent to the decoding unit 45. (Step 414). At this time, the decoding unit 45 does not perform decoding yet. Since the receiving unit 44 performs distribution control from the remaining buffer capacity, the receiving buffer does not overflow.

  Next, when receiving the reception start notification of the encoded video data from the receiving unit 44, the synchronized playback control unit 42 sends the same multi-view playback file URL as in step 402 to all the slave playback terminals connected in TCP / IP in step 401. An instruction to notify is sent to the transmission unit 43 (step S415). The transmission unit 43 receives an instruction from the synchronous playback control unit 42 to notify the same multi-view playback file URL as in step 402 to all slave playback terminals connected in TCP / IP in step 401, and the received multi-view playback file URL is Transmission to all slave playback terminals 50 (60, 70) via the network 30 by TCP / IP (step S416).

  In the slave playback terminal 50 (60, 70), the receiving unit 54 receives the multi-view playback file URL from the master playback terminal 40 via the network 30, and sends the multi-view playback file URL to the synchronous playback control unit 52 ( Step S417). The synchronous playback control unit 52 of the slave playback terminal 50 (60, 70) receives the multi-view playback file URL from the reception unit 54, and sends the multi-view playback file URL to the transmission unit 53 (step S418). The transmission unit 53 of the slave reproduction terminal 50 (60, 70) receives the multi-view reproduction file URL from the synchronous reproduction control unit 52, and sends a multi-view reproduction file distribution request of the received URL to the distribution server 20 (step S419).

  In the distribution server, the receiving unit 21 receives the multi-view playback file URL from the slave playback terminal 50 (60, 70) via the network 30, and sends it to the playback data storage unit 22 (step S420). The reproduction data storage unit 22 receives the multi-view reproduction file URL from the reception unit 21, reads the requested number of multi-view reproduction files of the received URL, and transmits the requested number to the transmission unit 23 (step S421). The transmission unit 23 receives the requested number of multi-view playback files from the playback data storage unit 22, and transmits the received multi-view playback files to the slave playback terminals 50 (60, 70) via the network 30 (step S422). ).

  In the slave playback terminal 50 (60, 70), the receiving unit 54 receives the multi-view playback file from the distribution server 20 via the network 30 and sends it to the synchronous playback control unit 52 (step S423). Next, in the slave playback terminal 50 (60, 70), when the synchronized playback control unit 52 receives the multi-view playback file from the receiving unit 54, the encoded video of the content URL described in the multi-view playback file. A data distribution request is sent to the transmission unit 53, and a multi-view playback file is sent to the decoding unit 55 (step S424). The transmission unit 53 receives the distribution request for the encoded video data from the synchronous reproduction control unit 52, and sends the distribution request for the encoded video data to the distribution server 20 via the network 30 (step S425).

  In the distribution server 20, the receiving unit 21 receives the encoded video data distribution request from the slave reproduction terminal 50 (60, 70) via the network 30, and stores the received encoded video data distribution request as reproduction data. The data is sent to the unit 22 (step S426). The reproduction data storage unit 22 receives the encoded video data distribution request from the reception unit 21, reads out the requested encoded video data by the requested number, and sends it to the transmission unit 23 (step S427). The transmission unit 23 receives the number of requests of the encoded video data sent from the reproduction data storage unit 22, and transmits the received encoded video data to the slave reproduction terminal 50 (60, 70) via the network 30 ( Step S428).

  In the slave reproduction terminal 50 (60, 70), the reception unit 54 receives the encoded video data transmitted from the transmission unit 23 of the distribution server 20 via the network 30, and synchronously reproduces the start of reception of the encoded video data. The control unit 52 is notified, and the navigation encoded video data and the main encoded video data of the encoded video data are each sent to the decoding unit 55 only by 1 GOP (step S429). At this time, the decoding unit 55 does not perform decoding yet. In the slave playback terminal 50 (60, 70), the receiving unit 54 performs distribution control from the remaining buffer capacity, so that the reception buffer does not overflow.

  The synchronized playback control unit 52 receives the encoded video data reception start notification from the reception unit 54, and sends the received encoded video data reception start notification to the transmission unit 53 (step 430). The transmission unit 53 receives the encoded video data reception start notification from the synchronous reproduction control unit 52, and sends the received encoded video data reception start notification to the master reproduction terminal 40 by TCP / IP via the network 30 (step S31). S431).

  In the master reproduction terminal 40, the receiving unit 44 receives the encoded video data reception start notification from the slave reproduction terminal 50 (60, 70) via the network 30, and performs the synchronous reproduction control on the received encoded video data reception start notification. This is sent to the unit 42 (step S432). The synchronous playback control unit 42 receives the encoded video data reception start notification of the slave playback terminals 50 (60, 70) from the receiving unit 44, and the encoded video data reception start notification from all the slave playback terminals 50 (60, 70). Is received, an instruction for creating the playback area information and notifying each slave playback terminal 50 (60, 70) of each playback area information is sent to the transmission unit 43, and the master playback area information is sent to the decoding unit 45. (Step 433).

  The reproduction area information is created by allocating the reproduction area of each terminal in order from the top of the slave reproduction terminal IP address list based on the number of divisions described in the multi-view reproduction file. As shown in FIG. 5, the master playback terminal always has the upper left corner, and the playback of each slave playback terminal 50 (60, 70) is in raster scan order. That is, the master playback terminal 40 has a quadrant upper left corner, the slave playback terminal 50 has a quadrant upper right, the slave playback terminal 60 has a lower quadrant, and the slave playback terminal 70 has a quadrant right It is below.

  The transmission unit 43 of the master playback terminal 40 receives an instruction to notify each playback area information from the synchronized playback control unit 42 to each slave playback terminal 50 (60, 70), and each slave playback terminal 50 (60) connected via TCP / IP. , 70), each reproduction area information is transmitted via the network 30 (step 434).

  In the slave reproduction terminal 50 (60, 70), the receiving unit 54 receives the reproduction area information of the own terminal from the master reproduction terminal 40 via the network 30, and receives the received reproduction area information of the own terminal as a synchronous reproduction control unit. 52 (step 435). Upon receiving the playback area information of the terminal itself, the synchronized playback control section 52 sends it to the decoding section 55 and sends a playback area information receipt notification to the transmission section 53 (step 436). The transmission unit 53 receives the reproduction area information receipt notification from the synchronous reproduction control unit 52 and sends it to the master reproduction terminal 40 via the network 30 by TCP / IP (step 437).

  In the master playback terminal 40, the receiving unit 44 receives the playback area information reception notification from the slave playback terminal 50 (60, 70), and sends the received playback area information reception notification to the synchronous playback control unit 42 (step 438). When the synchronized playback control unit 42 receives the playback area information reception notification from the receiving unit 44 and receives the playback area information reception notification from all the slave playback terminals 50, 60, 70, the time of the radio clock 47 is confirmed and confirmed. The decoding start time T = T1 + T2 is calculated by adding the maximum time T2 until the decoding start instruction arrives from the master playback terminal 40 to the slave playback terminals 50, 60, 70 at the time T1, and further, the decoding start An instruction to send the time T to all the slave playback terminals 50, 60, 70 is sent to the transmission unit 43 (step 439).

  It is assumed that the maximum time T2 until the decoding start instruction arrives from the master playback terminal 40 to the slave playback terminals 50, 60, 70 is set in advance. As this setting method, a test packet is transmitted from the master reproduction terminal 40 to the slave reproduction terminals 50, 60, 70, and the time for the response packet to return from each slave reproduction terminal 50, 60, 70 to the master reproduction terminal 40 is measured. Set.

  In the master reproduction terminal 40, the synchronous reproduction control unit 42 confirms the radio clock 47, and when the decoding start time T is reached, sends a decoding start instruction to the decoding unit 45. Furthermore, the synchronous reproduction control unit 42 An instruction to start transmission of the encoded video data to the decoding unit 45 is sent to the receiving unit 44 (step 440).

  Next, in the master reproduction terminal 40, when receiving the decoding start from the synchronous reproduction control unit 42, the decoding unit 45 decodes the navigation encoded video data, and selects the initial value selection area information and the master reproduction area information. Decoding of the main encoded video data based on the 1 GOP is started in parallel (the main video decoded based on the selection area information and the master reproduction area information is larger than the master reproduction area shown in FIG. 4). Further, based on the master playback area value, the master playback area is cut out, the master playback area video and the navigation video are sent to the display unit 46, and the multi-view playback file is further generated from the decoded navigation video. In accordance with scenario 1 and scenario 2 below, the images of scenarios 1 and 2 are cut out based on the selected area information and However, the video scenarios 1 and 2 that the thumbnails, and sends to the display unit 46 (step 441). In the master playback terminal 40, the display unit 46 receives the navigation video decoded by the decoding unit 45, the master playback area video, and the thumbnails of the scenarios 1 and 2 and starts playback (step 442).

  On the other hand, the transmission unit 43 of the master reproduction terminal 40 receives the decoding unit when the radio clock 47 (57, etc.) of all the reproduction terminals 40, 50 (60, 70) reaches the decoding start time T from the synchronous reproduction control unit 42. When receiving the instruction to send the decoding start to 45, 55, the instruction is transmitted to all the slave playback terminals 50, 60, 70 via the network 30 by TCP / IP (step S443).

  Next, the receiving unit 54 of the slave playback terminal 50 (60, 70) receives an instruction to send the decoding start to the decoding unit when the decoding start time T is received from the master playback terminal 40 via the network 30. Is sent to the synchronous reproduction control unit 52 (step 444). Next, when the synchronous reproduction control unit 52 of the slave reproduction terminal 50 (60, 70) receives an instruction from the reception unit 54 to send the decoding start to the decoding unit when the decoding start time T is reached, the radio clock 57 When the radio timepiece 57 reaches the decoding start time T, a decoding start instruction is sent to the decoding unit 55, and further, a transmission start instruction to the decoding unit for encoded video data is sent to the receiving unit 54 (step S1). S445).

  When receiving the decoding start instruction from the synchronous playback control unit 52, the decoding unit 55 of the slave playback terminal 50 (60, 70) receives the selection area information of the initial value and the slave playback terminal 50 (60, 70) of its own terminal. The decoding of the main encoded video data based on the reproduction area information and the decoding of the navigation encoded video data are started in parallel in units of 1 GOP (decoding based on the selection area information and the reproduction area information). The main video has a size larger than the slave playback area shown in FIG. 4), and each slave playback area video is cut out based on the playback area value of the slave playback terminal 50 (60, 70). The navigation video is sent to the display unit 56, and from the decoded navigation video, the scenario 1 of the multi-view playback file, Along the scenario Nario 2 thumbnails cut video scenarios 1 and 2 on the basis of each selected area information, the video scenarios 1 and 2 that the thumbnails, and sends to the display unit 56 (step S446).

  The display unit 56 of the slave playback terminal 50 (60, 70) displays the navigation video decoded from the decoding unit 55, the slave playback area video of the slave playback terminal 50 (60, 70), and thumbnails of scenarios 1 and 2. Receiving and starting reproduction (step 447).

  Then, it is determined whether or not the master playback terminal 40 has stopped playback (step 448). When the master playback terminal 40 has stopped playback, all the slave playback terminals 50, 60, and 70 also stop playback.

  12 to 14 are flowcharts for explaining the operation of the present embodiment (divided reproduction by scenario). When the user selects either scenario 1 or scenario 2 in the form of a thumbnail during stream playback on the display unit 46 of the master playback terminal 40, the display unit 46 of the master playback terminal 40 plays back the selected scenario selection information. The request is sent to the request unit 41 (step 501). In the following, it is assumed that scenario 1 is selected.

  Next, when the playback request unit 41 of the master playback terminal 40 receives the scenario 1 selection information from the display unit 46, the playback request unit 41 sends the received scenario 1 selection information to the synchronous playback control unit 42 (step 502). The synchronized playback control unit 42 receives the selected scenario 1 selection information from the playback request unit 41, sends the received scenario 1 selection information to the decoding unit 45, and also receives all the scenario 1 selection information received through TCP / IP connection. An instruction to notify the slave playback terminal 50 (60, 70) is sent to the transmission unit 43 (step 503). The transmission unit 43 receives an instruction to notify the scenario 1 selection information to all the slave reproduction terminals from the synchronous reproduction control unit 42, and the received scenario 1 selection information is transmitted to all the slave reproduction terminals 50 (60 via the network by TCP / IP). , 70) (step 504).

  Next, in the slave playback terminal 50 (60, 70), the receiving unit 54 receives the scenario 1 selection information from the master playback terminal 40 via the network 30, and sends the received scenario 1 selection information to the synchronized playback control unit 52. Send (step 505). The synchronized playback control unit 52 receives the scenario 1 selection information from the reception unit 54, sends the received scenario 1 selection information to the decoding unit 55, and sends a scenario 1 selection information receipt notification to the transmission unit 53 (step 506). . The transmission unit 53 receives the scenario 1 selection information reception notification from the synchronous reproduction control unit 52, and sends the scenario 1 selection information reception notification to the master reproduction terminal 40 by TCP / IP via the network 30 (step S507).

  In the master playback terminal 40, the receiving unit 44 receives the scenario 1 selection information reception notification from the slave playback terminal 50 (60, 70) via the network 30, and the received scenario selection information reception notification is sent to the synchronous playback control unit 42. (Step 508). When receiving the scenario 1 selection information reception notification of all the slave playback terminals 50 (60, 70) from the receiving unit 44, the synchronized playback control unit 42 checks the time of the radio clock 57, and at the confirmed time Z1, the master The scenario playback start time Z = Z1 + Z2 is calculated by adding the maximum time Z2 until the scenario playback start instruction arrives from the playback terminal 40 to the slave playback terminal 50 (60, 70), and the scenario playback start time Z is calculated for all slaves. An instruction to send to the playback terminals 50, 60, and 70 is sent to the transmitter 43 (step 509).

  It is assumed that the maximum time Z2 until the scenario playback start instruction arrives from the master playback terminal 40 to the slave playback terminal 50 (60, 70) is set in advance. As this setting method, a test packet is transmitted from the master reproduction terminal 40 to the slave reproduction terminal 50 (60, 70), and the time for the response packet to return from each slave reproduction terminal 50 (60, 70) to the master reproduction terminal 40 is measured. And set.

  Next, in the master playback terminal 40, the synchronous playback control unit 42 checks the radio clock 47, and when the scenario playback start time Z is reached, sends a scenario 1 playback start instruction to the decoding unit 45, and further to the receiving unit 44. Then, a transmission start instruction is sent to the decoding unit of the encoded video data (step 510).

  In the master playback terminal 40, the decoding unit 45 receives a scenario 1 playback start instruction from the synchronized playback control unit 42, decodes navigation encoded video data in order from the top of the scenario 1 along the scenario, and selects area information. And decoding of the main encoded video data based on the master reproduction area information in parallel in units of 1 GOP (the decoded main video has a size larger than the master reproduction area shown in FIG. 4), and The master playback area is cut out based on the playback area value, the master playback area video and the navigation video are sent to the display unit 46, and from the decoded navigation video, the scenarios 1 and 2 of the multi-view playback file are displayed. Based on the selected area information, the videos of scenarios 1 and 2 are cut out and thumbnailed, and the thumbnailed scenes are displayed. Send video Rio 1,2 on the display unit 46 (step 511). In the master playback terminal 40, the display unit 46 receives the navigation video, the master playback area video, and the thumbnailed videos of scenarios 1 and 2, and starts playback (step 512).

  On the other hand, the transmission unit 43 of the master playback terminal 40 generates a scenario when the radio clock 47 (57, etc.) of all playback terminals 40, 50 (60, 70) reaches the scenario start time Z from the master playback terminal synchronized playback control unit. An instruction to send one reproduction start to the decoding unit is received, and the instruction is transmitted to all the slave reproduction terminals 50, 60, and 70 via the network 30 by TCP / IP (step 513).

  Next, the receiving unit 54 of the slave playback terminal 50 (60, 70) outputs the playback start of scenario 1 to the decoding unit when the scenario start time Z is received from the master playback terminal 40 via the network 30. An instruction is sent to the synchronous reproduction control unit 52 (step 514). Next, when the synchronous playback control unit 52 of the slave playback terminal 50 (60, 70) receives an instruction to send the scenario 1 playback start to the decoding unit at the scenario start time Z from the receiving unit 54, the radio clock 57 When the radio timepiece 57 reaches the scenario start time Z, a scenario 1 reproduction start instruction is sent to the decoding unit 55, and further, a transmission start instruction to the decoding unit of encoded video data is sent to the receiving unit 54 (step S1). 515).

  When receiving the scenario 1 playback start instruction from the synchronous playback control unit 52, the decoding unit 55 of the slave playback terminal 50 (60, 70) decodes the navigation encoded video data in order from the top of the scenario 1 along the scenario. And decoding of the main encoded video data based on the selection area information and the slave reproduction area information is started in parallel in units of 1 GOP (the decoded main video is larger in size than the slave reproduction area shown in FIG. 4). Furthermore, based on the playback area value of the slave playback terminal 50 (60, 70), the slave playback area video is cut out, the slave playback area video and the navigation video are sent to the display unit 56, and further decoded. Based on the selected area information of scenario 1 and scenario 2 of the multi-view playback file, And thumbnails cut video Oh 1, an image scenario 1 and 2 that the thumbnails, and sends to the display unit 56 (step 516).

  The display unit 56 of the slave playback terminal 50 (60, 70) receives the navigation video, the slave playback area video of the slave playback terminal 50 (60, 70), and the thumbnailed scenarios 1 and 2 and starts playback ( Step 517).

  Then, it is determined whether or not the master playback terminal 40 has stopped playback (step 518). If playback stop has been executed, all the slave playback terminals 50, 60, and 70 also stop playback.

  According to the embodiment described above, the playback terminal is divided into a master playback terminal and a slave playback terminal, and the radio clock is accurately synchronized with each of the master playback terminal and the slave playback terminal, and based on the playback area information of the own terminal all at once. Since the decoding is started and the video is played back, even a high-resolution video that has a high processing load and cannot be played back by one playback terminal is divided and played back by a plurality of playback terminals. be able to.

DESCRIPTION OF SYMBOLS 10 Radio transmitting station 20 Distribution server 21 Receiving part 22 Reproduction | regeneration data preservation | save part 23 Transmission part 30 Network 40 Master reproduction | regeneration terminal 41 Reproduction | regeneration request | requirement part 42 Synchronous reproduction control part 43 Transmission part 44 Receiving part 45 Decoding part 46 Display part 47 Radio clock 50, 60, 70 Slave playback terminal 52 Synchronous playback control unit 53 Transmission unit 54 Reception unit 55 Decoding unit 56 Display unit 57 Radio clock

Claims (7)

A video division reproduction method in which encoded video data distributed from a distribution server is divided and displayed by one master reproduction terminal and at least one slave reproduction terminal,
The master playback terminal, and the location of the marks Goka video data, and vertical and horizontal division number on the display screen of the image corresponding to the number of the said one master playback terminal at least one slave reproduction device, the entire image and a selection area information indicating an area to be reproduced and displayed on Oite the display screen, the multi-view reproduction information stored in the delivery server, and request to the distribution server, the distribution in response to the request Receiving multi-view playback information transmitted from the server;
The master reproduction terminal transmits a video distribution request to the distribution server based on the location where the encoded video data included in the received multi-view reproduction information exists, and distribution from the distribution server in response to the video distribution request Receiving encoded video data to be processed;
The master playback terminal transmits a request instruction for requesting the distribution server to receive the same multi-view playback information as the multi-view playback information received from the distribution server, to the one or more slave playback terminals;
The one or more slave reproduction terminal based on a request instruction of multi-view playback information from the master playback terminal, sends a request for multi-view playback information to the distribution server, the distribution server in response to 該要 determined Receiving the multi-view playback information transmitted from,
The one or more slave playback terminals transmit a video distribution request to the distribution server based on the location where the encoded video data included in the received multi-view reproduction information is present, and the distribution in response to the video distribution request Receiving encoded video data distributed from a server;
When the one or more slave playback terminals receive the encoded video data distributed from the distribution server, transmitting the encoded video data reception start notification to the master playback terminal;
The master playback terminal receives the encoded video data reception start acknowledgment from the one or more slave reproduction terminal all, based on the selected region information and the vertical and horizontal division number included in the received multi-view playback information, the Generating reproduction area information indicating a divided area to be reproduced for each of one or more slave reproduction terminals;
Transmitting the playback area information to the one or more slave playback terminals;
And transmitting the decoded initiation time relative to the master playback terminal determines the decoding start time is the time to start decoding, before Symbol one or more slave reproduction end end respectively,
When the master playback terminal and each of the one or more slave playback terminals have their respective internal clocks at the decoding start time, the decoding of the encoded video data is performed based on the playback area information. image segmenting reproducing method characterized by comprising the steps of the starts, each cut out is divided video to be played back, and playback display the divided image which is cut out said each of the display unit of. The multi-view reproduction information further includes scenario information describing a reproduction procedure of the encoded video data,
Determining a scenario playback start time, which is a time at which the master playback terminal starts playback of the scenario information, and transmitting the scenario playback start time to each of the one or more slave playback terminals;
Each of the said master reproduction terminal the one or more slave reproduction terminal, respectively are of-sync when the internal clock is the scenario playback start time, based on the scenario information, the encoded video data in order starts decoding, respectively cut out the division image to be reproduced, the clipped image segmenting reproducing method according to claim 1, wherein the division image and re-live display on each display unit further comprising a . The master playback terminal holds an IP address list of the one or more slave playback terminals, and based on the number of vertical and horizontal divisions included in the multi-view playback information , the selection area of the master playback terminal is always the upper left corner. The playback area information is created by allocating playback areas in raster scan order in the order in which selected areas of the one or more slave playback terminals are read from the IP address list. Item 2. The division reproduction method according to Item 2. A video division reproduction device that displays encoded video data distributed from a distribution server by one master reproduction terminal and at least one slave reproduction terminal.
The master playback terminal is
Marks Goka and the location of the video data, wherein one master playback terminal and the at least one or more slave and aspect division number on the display screen of the image according to the reproduction terminal number, Oite the display screen on the entire image Multi-view reproduction information held in the distribution server, including selection area information indicating an area to be reproduced and displayed on the distribution server , and the multi-server transmitted from the distribution server in response to the request. Master side multi-view playback information receiving means for receiving view playback information;
Based on the location of the encoded video data included in the received multi-view playback information, the video distribution request is transmitted to the distribution server, and the encoded video data distributed from the distribution server in response to the video distribution request A master side encoded video data receiving means for receiving
A multi-view playback information request instruction transmitting means for transmitting the multi-view playback information same multi-view playback information and a request instruction for requesting to the distribution server, to the one or more slave reproduction terminal said received from the distribution server,
An internal clock on the master side that measures the time ,
Upon receiving the encoded video data reception start acknowledgment from the one or more slave reproduction terminal all, based on the selected region information and the vertical and horizontal division number included in the received multi-view playback information, the one or more slave reproduction Reproduction area information generating means for generating reproduction area information indicating a divided area to be reproduced for each terminal;
Playback area information transmitting means for transmitting the playback area information to the one or more slave playback terminals;
Synchronous playback control means for determining a decoding start time which is a time to start decoding and transmitting the decoding start time to each of the one or more slave playback terminals ;
Master side display means for displaying the decoded video;
When the master side internal clock is the decoding start time, on the basis of the reproduction area information, the start the decoding of encoded video data, cut out division image to be reproduced, the master of the segmented images cut out the A master side decoding means for reproducing and displaying on the side display means,
The one or more slave playback terminals are:
Based on the request instruction of the multi-view playback information from the master playback terminal, it sends a request for multi-view playback information to the distribution server, to receive a multi-view playback information from the distribution server in response to 該要 determined slave Side multi-view playback information receiving means;
Based on the location of the encoded video data included in the received multi-view playback information, the video distribution request is transmitted to the distribution server, and the encoded video data distributed from the distribution server in response to the video distribution request Slave side encoded video data receiving means for receiving
When receiving encoded video data distributed from the distribution server, encoded video data reception start notification transmitting means for transmitting an encoded video data reception start notification to the master reproduction terminal;
A slave-side internal clock synchronized with the master-side internal clock of the master playback terminal ;
Slave side display means for displaying the decoded video;
When the slave-side internal clock reaches the decoding start time, decoding of the encoded video data is started on the basis of the reproduction area information, and the divided video to be reproduced is cut out. And a slave side decoding means for reproducing and displaying on the display means. The multi-view reproduction information further includes scenario information describing a reproduction procedure of the encoded video data,
The synchronized playback control unit determines a scenario playback start time which is a time to start playback of the scenario information, and transmits the scenario playback start time to each of the one or more slave playback terminals;
The master decoding means, when the master side internal clock is the scenario playback start time, based on the scenario information, and starts decoding of the encoded video data in order, cut split video to re eggplant , a split image which is cut out the re-live in a tabular radical 113,
Each of the slave decoding device, when the slave-side internal clock, which is 2.45 of the master side internal clock synchronization is the scenario reproduction start time, based on the scenario information, decoding the encoded video data in order the starts, each cut out is divided video to be reproduced, the video division reproducing apparatus according to claim 4, characterized in that the play displays the divided image which is cut out said each of the display unit. The master playback terminal further comprises holding means for holding an IP address list of the one or more slave playback terminals,
The reproduction area information generating means always sets the selection area of the master reproduction terminal as the upper left corner based on the number of vertical and horizontal divisions included in the multi-view reproduction information , and sets the selection area of the one or more slave reproduction terminals as the IP area. 6. The divided playback apparatus according to claim 4, wherein the playback area information is created by assigning playback areas in the order of raster scanning in the order read from the address list. On a computer of a video division reproduction device that displays encoded video data distributed from a distribution server by one master reproduction terminal and at least one slave reproduction terminal,
The master playback terminal is
Marks Goka and the location of the video data, wherein one master playback terminal and the at least one or more slave and aspect division number on the display screen of the image according to the reproduction terminal number, Oite the display screen on the entire image master and a selection area information indicating the area to be reproduced and displayed, and requests the multi-view reproduction information stored in the distribution server receives a multi-view playback information transmitted from the distribution server in response to the request Multi-view playback information reception function,
Based on the location of the encoded video data included in the received multi-view playback information, the video distribution request is transmitted to the distribution server, and the encoded video data distributed from the distribution server in response to the video distribution request Master side encoded video data reception function,
Request instruction to the multi-view playback information request instruction transmission function for transmitting to the one or more slave reproduction terminal requesting multi-view playback information same multi-view playback information and received from the distribution server to the distribution server,
Master side internal clock function to keep time ,
Upon receiving the encoded video data reception start acknowledgment from the one or more slave reproduction terminal all, based on the selected region information and the vertical and horizontal division number included in the received multi-view playback information, the one or more slave reproduction A reproduction area information generation function for generating reproduction area information indicating a divided area to be reproduced for each terminal;
A playback area information transmission function for transmitting the playback area information to the one or more slave playback terminals;
Synchronous playback control means for determining a decoding start time which is a time to start decoding and transmitting the decoding start time to each of the one or more slave playback terminals ;
When the master-side internal clock reaches the decoding start time, decoding of the encoded video data is started based on the reproduction area information, the divided video to be reproduced is cut out, and the cut out divided video is reproduced and displayed. Realize master side decryption function,
The one or more slave playback terminals are:
Based on a multi-view playback information request instruction from the master playback terminal, the slave side transmits a request for multi-view playback information to the distribution server and receives multi-view playback information from the distribution server in response to the request Multi-view playback information reception function,
Based on the location of the encoded video data included in the received multi-view playback information, the video distribution request is transmitted to the distribution server, and the encoded video data distributed from the distribution server in response to the video distribution request Slave side encoded video data reception function,
When receiving encoded video data distributed from the distribution server, encoded video data reception start notification transmitting means for transmitting an encoded video data reception start notification to the master reproduction terminal;
Slave side internal clock function synchronized with the master side internal clock ,
When the slave side internal clock is the decoding start time, on the basis of the reproduction area information, and starts decoding of the encoded video data, cut out division image to be reproduced, the slave divided image which is cut out the A slave-side decoding function for reproducing and displaying on the side display means.

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