WO2012043358A1 - コンテンツ供給装置、コンテンツ供給方法、コンテンツ再生装置、コンテンツ再生方法、プログラム、およびコンテンツ視聴システム - Google Patents
コンテンツ供給装置、コンテンツ供給方法、コンテンツ再生装置、コンテンツ再生方法、プログラム、およびコンテンツ視聴システム Download PDFInfo
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- content
- video
- switching
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Definitions
- the present disclosure relates to a content supply device, a content supply method, a content reproduction device, a content reproduction communication method, a program, and a content viewing system, and in particular, broadcast content by digital television broadcasting and distribution content distributed via the Internet.
- the present invention relates to a content supply device, a content supply method, a content reproduction device, a content reproduction method, a program, and a content viewing system that can be associated and reproduced.
- digital television broadcast receivers typified by digital television receivers have a VOD (Video On Demand) function that allows video content to be viewed to be obtained and played back via the Internet at any timing. There is something to have.
- VOD Video On Demand
- broadcast content digital television broadcasting
- distribution content video content
- the present disclosure has been made in view of such a situation, and realizes quick continuous reproduction of related broadcast contents and distribution contents.
- a content supply apparatus is a video switch for causing a content reproduction apparatus to execute processing related to switching of video content to be reproduced in the content supply apparatus that supplies video content to the content reproduction apparatus.
- a generation unit that generates a command
- a broadcast unit that broadcasts the generated video content embedded with the video switch command via a broadcast network
- a distribution unit that distributes the video content via the Internet.
- the generation unit includes a preselect command that allows the user to confirm whether or not to switch the video content to be played before the switching timing of the video content to be played back, and a switching destination before the switching timing of the video content to be played back.
- the video switch command can be generated as a preload command for acquiring the video content or a switch command for switching the video content to be reproduced.
- the generation unit can generate the video switch command including an element for instructing whether or not to perform loopback when switching to the video stream before switching after switching the video content to be reproduced.
- the generation unit can generate the video switch command including an element for instructing whether or not to perform user authentication when acquiring the switching destination video content.
- the generation unit includes the preselect command, the preload command, the switch command, an enable switch command that enables switching to video content corresponding to a viewpoint specified by a user, or a video corresponding to a viewpoint specified by a user.
- the video switch command can be generated as a disable switch command for ending the state where switching to content is possible.
- the distribution unit can also distribute the video content in which the generated video switch command is embedded via the Internet.
- a content supply method is a content supply method of a content supply apparatus that supplies video content to a content reproduction apparatus, wherein the content supply apparatus performs processing related to switching of video content to be reproduced by the content supply apparatus.
- a program generates a video switch command for causing a computer that supplies video content to a content playback device to cause the content playback device to execute processing related to switching of video content to be played back. It functions as a generation unit, a broadcast unit that broadcasts the generated video content embedded with the video switch command via a broadcast network, and a distribution unit that distributes the video content via the Internet.
- a video switch command for causing a content playback device to execute processing relating to switching of video content to be played back is generated, and the video content embedded with the generated video switch command is transmitted to a broadcast network.
- the video content is distributed via the Internet.
- a content playback device is a content playback device that plays back video content supplied from a content supply device, and that is distributed via video content broadcast over a broadcast network or the Internet.
- An acquisition unit for acquiring video content, an analysis unit for analyzing a video switch command embedded in the acquired video content, and processing related to switching of video content to be played back are controlled according to the analysis result of the video switch command. And a control unit.
- the video switch command is preceded by the switching timing of the video content to be played back, a preselect command for allowing the user to confirm whether or not the switching of the video content to be played back can be executed, and switched before the switching timing of the video content to be played back. It may be a preload command for acquiring the previous video content or a switch command for switching the video content to be reproduced.
- the content playback apparatus may further include a buffer unit that buffers the video content broadcast via a broadcast network, and the video switch command switches the video content to be played back. After that, when returning to the video stream before switching, an element for instructing whether or not to perform loopback can be included.
- the content playback method is a content playback method of a content playback device that plays back video content supplied from a content supply device, wherein the video content is broadcast by a content playback device via a broadcast network. Or an acquisition step of acquiring video content distributed via the Internet, an analysis step of analyzing a video switch command embedded in the acquired video content, and playback according to the analysis result of the video switch command And a control step for controlling processing relating to switching of video content.
- the program according to the second aspect of the present disclosure acquires a video content broadcast via a broadcast network or a video content distributed via the Internet by a computer that reproduces the video content supplied from the content supply device Functions as an acquisition unit that performs analysis, a video switch command that is embedded in the acquired video content, and a control unit that controls processing related to switching of video content to be played according to the analysis result of the video switch command
- video content broadcasted via a broadcast network or video content distributed via the Internet is acquired, and a video switch command embedded in the acquired video content is Based on the analysis result of the video switch command, processing relating to switching of video content to be reproduced is controlled.
- a content viewing system is a content viewing system including a content supply device and a content reproduction device, in which the content supply device causes the content reproduction device to execute processing related to switching of video content to be reproduced.
- a generating unit that generates the video switch command, a broadcasting unit that broadcasts the video content embedded with the generated video switch command via a broadcasting network, and a distribution unit that distributes the video content via the Internet.
- the content reproduction apparatus acquires an image content broadcast via a broadcast network or an image content distributed via the Internet, and a video switch command embedded in the acquired image content.
- An analysis unit for analyzing, and a control unit for controlling processing related to switching of video content to be reproduced according to the analysis result of the video switch command.
- a video switch command for causing a content playback device to execute processing related to switching of video content to be played is generated by the content supply device, and the generated video switch command is embedded in the video Content is broadcast via a broadcast network, and video content is distributed via the Internet. Further, the video content broadcasted via the broadcast network or the video content distributed via the Internet is acquired by the content reproduction device, and the video switch command embedded in the acquired video content is analyzed, In accordance with the analysis result of the video switch command, processing related to switching of video content to be reproduced is controlled.
- broadcast content and distribution content that can be continuously played back can be supplied to the reception side.
- related broadcast content and distributed content can be continuously played back.
- FIG. 1 is a diagram for explaining a first continuous reproduction scenario (replacement of broadcast CM).
- CM commercial
- the broadcast CM is replaced and the viewer is specialized for the viewer with accumulated content or streaming content.
- Specialized CM is played.
- the specialized CM for example, a local one that matches the viewer's address or a one that suits the taste is assumed. It is assumed that the profile information such as the viewer's address and preference is registered in advance in the receiving device, and the replacement of the broadcast CM by the specialized CM is performed only in the receiving device in which the profile information has been registered.
- FIG. 2 and 3 are diagrams for explaining the second continuous reproduction scenario (time variable length program).
- this scenario at the beginning of a program composed of a plurality of parts such as a news program as broadcast content, as shown in the screen display example of FIG. It is possible to select whether the long version (L) is based on the content. Also, neither the short version nor the long version can be selected. Thereby, the reproduction time of the program becomes a variable length.
- the end time of the distribution content may be delayed from the end time of the initial broadcast content. In this case, there is a problem when it is desired to view the next program (broadcast content) of the broadcast content.
- the reproduction of the distribution content may be interrupted at the start time of the next program (broadcast), or the next program (broadcast content) may be buffered. Note that when the program (broadcast content) next to the broadcast content is not viewed, the distributed content may be reproduced to the end.
- FIG. 4 and 5 are diagrams for explaining the third continuous reproduction scenario (interactive program).
- the third continuous reproduction scenario interactive program.
- the entrance to the maze-like old city area that is famous as a tourist spot as shown in FIG. 5 is introduced, and there is free walking time as a dissolution point.
- Fig. 6 after preparing a video to walk through a maze-like road or building, it is possible to switch to individual branched video by the viewer selecting at the branch point or store.
- the viewer can receive and reproduce the distribution contents corresponding to countless various walking courses on a free route while sequentially switching. Therefore, it is assumed that there is a course that not only passes through various streets and markets depending on the selection of the viewer, but also enters the store.
- a meeting point may be set in various routes, and only when the meeting point can be gathered during a predetermined time, it is possible to return to the broadcast content (video switching).
- FIG. 6 and 7 show a fourth continuous reproduction scenario (arbitrary image frame designation program).
- a high-definition (4K2K or higher) video camera is used to shoot a sports program such as a soccer broadcast as broadcast content.
- the obtained plurality of videos are supplied to the receiving side as broadcast contents or streaming contents.
- the viewer sets an image frame of an arbitrary size (hereinafter referred to as an arbitrary image frame) at an arbitrary position, and the specified arbitrary image frame is cut out from the received broadcast content or streaming content and displayed.
- an arbitrary image frame may be extracted after linking.
- the arbitrary image frame designated by the viewer may be notified to the transmission side, and the video corresponding to the arbitrary image frame may be cut out on the transmission side and distributed by streaming.
- FIG. 8 to 10 show a fifth continuous reproduction scenario (panoramic multi-view program).
- this scenario as shown in FIG. 9, 360 ° of the entire periphery centering on the camera is simultaneously imaged, and the viewpoint video V0 that becomes the entry among a plurality of viewpoint videos V0 to V7 obtained as a result is broadcast. Content and others are considered streaming content. Note that it is not always necessary to photograph 360 ° of the entire circumference, and a portion of the entire circumference may be used.
- the viewer sets an image frame (hereinafter referred to as an arbitrary image frame) in an arbitrary direction, and the specified arbitrary image frame is cut out from the received broadcast content or streaming content and displayed.
- an image frame hereinafter referred to as an arbitrary image frame
- the specified arbitrary image frame is cut out from the received broadcast content or streaming content and displayed.
- FIG. 10 when the arbitrary image frame extends over the image frame 1 of the broadcast content and the image frame 2 of the streaming content, both are simultaneously received and reproduced, and the resulting video signal is obtained.
- the arbitrary image frames may be extracted after connecting.
- FIG. 11 and 12 show a sixth continuous reproduction scenario (theatrical multi-view program).
- a plurality of video cameras C0 to C6 are arranged on concentric circles centered on a stage to be imaged and simultaneously imaged, and a plurality of viewpoint videos V0 obtained as a result are obtained. From V6 to V6, the entry viewpoint video V0 is broadcast content, and the other is streaming content.
- the viewer designates an arbitrary viewpoint (camera position), receives a viewpoint video corresponding to the designated arbitrary viewpoint from the broadcast content or streaming content, plays it, and displays it. If the specified viewpoint is different from the actual camera position, the viewpoint images corresponding to the two actual camera positions sandwiching the specified viewpoint are received and played back, and the specified viewpoint is obtained by interpolation processing using them. It is sufficient to generate a video corresponding to.
- FIG. 13 shows a configuration example of the content viewing system.
- the content viewing system 10 includes a content content transmission device 20 and content reproduction devices 30-1 to 30-n.
- a content content transmission device 20 and content reproduction devices 30-1 to 30-n.
- the content reproduction device 30 when there is no need to individually distinguish the content reproduction devices 30-1 to 30-n, they are simply referred to as the content reproduction device 30.
- the content reproduction apparatus 30 may exist as a single unit, or may be incorporated in a television receiver, a video recorder, or the like.
- the content transmission apparatus 20 includes a content storage 21, a command generation unit 22, a VRT generation unit 23, a broadcast unit 24, and a distribution unit 25.
- the content storage 21 holds video content that is broadcast or distributed.
- the video content is composed of a video stream and an audio stream.
- the command generation unit 22 generates a video switch command for causing the content receiving device 30 to execute processing related to video switching, and outputs the video switch command to the broadcast unit 24 or the distribution unit 25.
- the generated video switch command is embedded and broadcast in the video stream or audio stream of the broadcast content, or is embedded and distributed in the video stream or audio stream of the streaming content.
- the VRT generating unit 23 generates a VRT (View Relation Table) that is referred to when switching the video in the content receiving device 30 and outputs the VRT (View Relation Table) to the broadcasting unit 24 or the distribution unit 25.
- VRT View Relation Table
- VRT contains information such as the viewpoint column type of multiple multi-view videos that make up the video content, and the URL to acquire (Broadcast Stream or Internet Stream URL). Details of the VRT will be described later with reference to FIG.
- the broadcast unit 24 reads out the video content held in the content storage 21 to be broadcast as broadcast content, and broadcasts it via the broadcast network 11 as a television broadcast program.
- the broadcast unit 24 embeds the generated video switch command in the video stream or audio stream of the broadcast content and broadcasts it.
- the broadcast unit 24 stores the generated VRT at a predetermined position of the broadcast signal and broadcasts it.
- the broadcast unit 24 stores the generated VRT at a predetermined position of the broadcast signal and broadcasts it. Further, the broadcasting unit 24 can read out the video content held in the content storage 21 to be broadcast as stored content and broadcast it via the broadcast network 11.
- the distribution unit 25 reads out the video content held in the content storage 21 to be distributed as streaming content or stored content, and distributes it to the content receiving device 30 via the Internet 12. Further, the distribution unit 25 supplies the generated VRT to the content reproduction device 30 that is a supply request source via the Internet 12 in response to a request from the content reproduction device 30.
- FIG. 14 shows a configuration example of the content reproduction apparatus 30.
- the content reproduction apparatus 30 includes an operation input unit 31, a control unit 32, a tuner 33, a primary separation unit 34, a retention buffer 35, a secondary separation unit 36, a decoder 37, and a switch 38. Further, the content reproduction apparatus 30 includes a communication I / F 39, a streaming reception unit 40, a content storage unit 42, a flute processing unit 41, a switch 43, a decoder 44, and a command analysis unit 45.
- the operation input unit 31 includes, for example, a remote controller and a receiving unit (both not shown), and receives a user operation and notifies the control unit 32 of the operation.
- the control unit 32 controls each unit of the content reproduction device 30 based on the user operation input from the operation input unit 31 and the analysis result of the received video switch command input from the command analysis unit 45.
- illustration of the control line which connects the control part 32 and each part is abbreviate
- the tuner 33 receives a television broadcast signal broadcast via the broadcast network 11 and outputs it to the primary separation unit 34.
- the primary separation unit 34 separates the broadcast content TS (transport stream) corresponding to the channel selection from the control unit 32 and outputs it to the retention buffer 35.
- the retention buffer 35 writes TS of the broadcast content in the loopback mode in which the broadcast signal is switched to the streaming signal or the like according to the control from the control unit 32, but does not perform the read output to the secondary separation unit 36. In this case, the TS from the previous stage is simultaneously written and read and output to the secondary separation unit 36.
- the secondary separation unit 36 separates the input broadcast content TS into a video stream and an audio stream and outputs them to the decoder 37. Further, the secondary separation unit 36 outputs the TS including the stored content to the flute processing unit 41.
- the decoder 37 decodes the input video stream and audio stream, and outputs the resulting video signal and audio signal to the switch 38. In addition, the decoder 37 extracts a video switch command embedded in the input video stream or audio stream and outputs the video switch command to the command analysis unit 45.
- the switch 38 outputs the input from the decoder 37 (video signal and audio signal) or the input from the decoder 44 to a monitor (not shown) in the subsequent stage according to the control from the control unit 32.
- the switch 38 is connected to the input from the decoder 37 (video signal and audio signal) and the input from the decoder 44 in accordance with the control from the control unit 32, and an arbitrary image frame or A video signal and an audio signal corresponding to an arbitrary viewpoint are generated and output to the subsequent stage.
- the communication I / F 39 is connected to the content transmission device 20 via the Internet 12.
- the streaming receiving unit 40 acquires streaming content from the content transmission device 20 via the communication I / F 39 and the Internet 12 and outputs the streaming content to the switch 43.
- the flute processing unit 41 extracts the stored content from the TS input from the secondary separation unit 36 and outputs it to the content storage unit 42.
- the content accumulation unit 42 holds broadcast accumulated content input from the flute processing unit 41.
- the content storage unit 42 acquires and holds stored content from the content transmission device 20 via the communication I / F 39 and the Internet 12. Further, the content storage unit 42 outputs the stored content to be held to the switch 43 according to the control from the control unit 32.
- the switch 43 outputs the streaming content from the streaming reception unit 40 or the storage content input from the content storage unit 42 to the decoder 44 according to the control from the control unit 32.
- the decoder 44 decodes the streaming content or the stored content input from the switch 43 and outputs the resulting video signal and audio signal to the switch 38. Further, the decoder 44 extracts a video switch command embedded in the input video stream or audio stream and outputs it to the command analysis unit 45.
- the command analysis unit 45 analyzes the input video switch command and outputs the analysis result to the control unit 32.
- FIG. 15 shows the transmission timing of the video switch command. As shown in the figure, the same video switch command is continuously embedded in a video stream or an audio stream a plurality of times and broadcast in order to suppress reception errors in the content receiving device 30.
- the content receiving apparatus 30 switches the video in response to the video switch command directly embedded in the video stream or the audio stream. As a result, for example, it is possible to switch video very quickly as compared with a case where a predetermined application program linked to a video stream is started and video is switched as an operation of the application program.
- Video switch command types Next, five types of video switch commands will be described. Video switch commands are classified as one of switch commands, preload commands, preselect commands, enable switch commands, or disable switch commands.
- FIG. 16 shows elements constituting a video switch command as a switch command.
- the switch command is a command for controlling the content receiving device 30 to switch the video, that is, to change the video content received and decoded.
- Command_id is identification information of the video switch command. When the same video switch command is continuously transmitted a plurality of times, the command_id is the same. Switch_id is identification information given to each event for switching video. Command code is a code number indicating that the video switch command is a switch command.
- Target Media Type indicates whether the switching destination video stream is broadcast content, MP4 format distribution content, MPEG2_TS format distribution format, or AVC_TS format distribution content.
- Target Stream URL indicates the acquisition destination URL of the video content of the switching destination.
- Stream_Start_Position indicates the playback start time position of the switching destination video content.
- Loop Back Mode specifies whether to use non-loopback mode or loopback mode.
- the loopback mode refers to the case where the playback of the switching source video is resumed from the switched scene after the switching of the video after switching the video and the non-loopback mode is the loopback. The case of switching other than the mode is shown.
- FIG. 3A shows a non-loopback mode
- FIG. 3B shows a loopback mode
- the switching source video (program A in the case of FIG. A) is written in the retention buffer 35 during the video switching period. If the video is not read and is not output to the secondary separation unit 36, and the playback is resumed after returning to the switching source video, the video is played back from the video immediately after the switching stored in the retention buffer. Therefore, the viewer views the state where the switching destination video is inserted into the switching source video.
- Personalized Mode indicates whether or not user authentication is performed when the distribution content is acquired, and indicates whether the device ID of the content receiving apparatus 30 is used for user authentication or whether the user is requested to input a password.
- the content transmission apparatus 20 supplies a distribution stream specialized for the user according to the result of the user authentication.
- Auto Switch flag indicates whether to confirm with the user before switching the video. Switching message is a question sentence to be presented to the user when confirming with the user before switching the video.
- FIG. 18 shows elements constituting a video switch command as a preload command.
- the preload command is a command for controlling the content receiving device 30 to receive the video content at the switching destination prior to the video switching timing.
- Command_id is identification information of the video switch command.
- Switch_id is identification information given to each event for switching video.
- Command code is a code number indicating that the video switch command is a preload command.
- Target Media Type indicates whether the switching destination video stream is broadcast content, MP4 format distribution content, MPEG2_TS format distribution format, or AVC_TS format distribution content.
- Target Stream URL indicates the acquisition destination URL of the video content of the switching destination.
- Stream_Start_Position indicates the playback start time position of the switching destination video content.
- Loop Back Mode specifies whether to use non-loopback mode or loopback mode.
- Personalized Mode indicates whether or not user authentication is performed when the distribution content is acquired, and indicates whether the device ID of the content receiving apparatus 30 or a password is used for user authentication.
- Auto Switch flag indicates whether to confirm with the user before switching the video.
- Time_to_switch indicates a scheduled time until switching to the video of the video content acquired in accordance with the preload command.
- FIG. 19 shows elements constituting a video switch command as a preselect command.
- the preselect command is a command for controlling the content receiving device 30 to allow the user to confirm whether or not to switch video before the video switching timing.
- Command_id is identification information of the video switch command.
- Switch_id is identification information given to each event for switching video.
- Command code is a code number indicating that the video switch command is a preselect command.
- Switching ⁇ message is a question sentence to be presented to the user when confirming with the user before switching the video.
- Time_to_switch indicates a scheduled time until switching to the video of the video content selected according to the preselect command.
- FIG. 20 shows elements constituting a video switch command as an enable switch command.
- the enable switch command is a command for controlling the content receiving device 30 to acquire a VRT so as to enable viewpoint switching in a panoramic multi-view video program or a theater multi-view video program.
- the id attribute of the neighbor_view element is identification information of a viewpoint video (hereinafter referred to as an adjacent viewpoint video) captured at a camera position adjacent to the camera position where the viewpoint video corresponding to the View_object element is captured.
- the type attribute is the viewpoint video specified in the View_object element and the adjacent command_id is identification information of the video switch command.
- Switch_id is identification information given to each event for switching video.
- Command code is a code number indicating that the video switch command is an enable switch command.
- Switching Meta URL indicates the URL from which VRT is acquired.
- FIG. 21 shows an example of elements constituting the VRT.
- the View_object element is information about each viewpoint video that constitutes a panoramic multi-view program or a theater multi-view program, and is described by the number of viewpoint videos.
- the View_object element is provided with six attributes: an id attribute, a name attribute, a format attribute, a horizontal_size attribute, a vertical_size attribute, and a location attribute.
- the id attribute of the View_object element is identification information for the viewpoint video.
- the name attribute a name for the multi-view video is described.
- the format attribute indicates the encoding format of the multi-view video.
- the horizontal_size attribute indicates the size of the multi-view video in the horizontal direction.
- the vertical_size attribute indicates the vertical size of the multi-view video.
- the location attribute indicates the acquisition destination URL of the viewpoint video.
- a neighbor_view element indicating information on the multi-view video captured at the camera position adjacent to the camera position where the multi-view video is captured is described as a child element.
- the neighbor_view element has four attributes, an id attribute, a type attribute, a direction attribute, and a distance attribute.
- a viewpoint column type panoramic type or theater type representing the relationship with the viewpoint video is shown.
- the direction attribute describes the direction of the camera position at which the adjacent viewpoint video is captured with respect to the camera position at which the viewpoint video corresponding to the View_object element is captured.
- the distance attribute indicates the viewing angle of the camera position at which the adjacent viewpoint video is captured with respect to the camera position at which the viewpoint video corresponding to View_object is captured.
- FIG. 22 shows elements constituting a video switch command as a disable switch command.
- the disable switch command controls the content receiving device 30 to invalidate the acquired VRT so that viewpoint switching in a panoramic multi-view video program or theater multi-view video program is impossible. It is a command.
- Command_id is identification information of the video switch command.
- Switch_id is identification information given to each event for switching video.
- Command code is a code number indicating that the video switch command is a disable switch command.
- FIG. 23 shows a usage example of the preselect command in the auto switching operation.
- a preselect command is transmitted prior to the switching timing, and a switch command is transmitted at the switching timing.
- the viewer On the receiving side, the viewer (the user of the content reproduction device 30) is made to select whether or not to perform video switching according to the preselect command.
- an auto switch is set for the video switching event indicated by Switch_id of the preselect command.
- no switching is set for the video switching event indicated by Switch_id of the preselect command.
- FIG. 24 shows a usage example of the preselect command and the preload command in the auto switching operation.
- a preselect command and a preload command are transmitted prior to the switching timing, and a switch command is transmitted at the switching timing.
- the viewer On the receiving side, the viewer (the user of the content reproduction device 30) is made to select whether or not to perform video switching according to the preselect command.
- an auto switch is set for the video switching event indicated by Switch_id of the preselect command.
- acquisition of the switching destination distribution content is started.
- video switching is executed promptly if the auto switch is set according to the previous preselect command.
- the distribution content of the switching destination is acquired according to the preload command, so that the video can be switched seamlessly.
- FIG. 25 shows an example of using the switch command in the manual switching operation.
- the Auto Switch Flag of the switch command is set to the manual switch, a message is displayed to the viewer (the user of the content playback device 30) to select whether or not to perform video switching.
- the viewer selects the presence / absence of video switching, acquisition of switching destination distribution content is started and video switching is performed.
- the switch command Loop Back Mode is set to loop back mode, the broadcast content that is the source of switching is buffered and the display is paused while waiting for the selection operation input from the user. Is done.
- the switch command Loop Back Mode is set to non-loopback mode, the broadcast content that was switched is being passed through while the selection operation input from the user is waiting, and the video of the broadcast content continues to be displayed. Is done.
- FIG. 26 shows an example of using the enable switch command and the disable switch command in the viewpoint switching operation.
- the receiving side acquires a VRT by sending an enable switch command.
- the receiving side acquires the VRT, the viewer is notified that the viewpoint can be arbitrarily designated.
- the viewpoint When the viewer arbitrarily designates the viewpoint, a multi-view video corresponding to the designated viewpoint is received and reproduced.
- a disable switch command is transmitted.
- the acquired VRT is invalidated according to the disable switch command.
- FIG. 27 is a flowchart for explaining the reproduction processing by the content reproduction apparatus 30.
- the content reproduction apparatus 30 has already received broadcast content as a program broadcast via the broadcast network 11.
- step S1 the command analysis unit 45 determines whether a video switch command has been received based on the presence / absence of an input from the decoder 37. If it is determined that a video switch command has been received, the process proceeds to step S2. In step S ⁇ b> 2, the command analysis unit 45 analyzes the video switch command input from the decoder 37 and performs processing according to the type of command indicated by the Command_code.
- step S3 the control unit 32 determines whether or not a viewpoint switching operation is input from the user. If it is determined NO, the process returns to step S1. Note that the viewpoint switching operation from the user can be input only when the viewpoint switching is enabled by an enable switch handling process described later. If it is determined in step S3 that a viewpoint switching operation has been input from the user, the process proceeds to step S4. In step S ⁇ b> 4, the control unit 32 controls each related unit to cause the distribution content corresponding to the designated viewpoint to be resinated and reproduced to switch the video.
- FIG. 28 is a flowchart for explaining processing (preselect command handling processing) when the received video switch command is a preselect command.
- step S11 the control unit 32 presents to the user a question sentence described in the pre-command “Switching ⁇ ⁇ message” to select whether to switch the video, and in step S12, determines whether switching is selected. To do. If switching video is selected, the process proceeds to step S13. In step S13, the control unit 32 sets the video switch indicated by Switch_id to an auto switch.
- step S12 when the video is switched but not selected, or when the selection time is timed out (determined based on Time_to_Switch), the preselect command handling process is terminated.
- FIG. 29 is a flowchart for explaining processing (preload command handling processing) when the received video switch command is a preload command.
- step S21 the control unit 32 determines whether or not the video switch indicated by the Switch_id is set to the auto switch according to the preselect command transmitted prior to the preload command. If it is determined that the auto switch is set, the process proceeds to step S22. In step S ⁇ b> 22, the control unit 32 controls each related unit to start preparation for receiving the delivery content to be switched to.
- step S21 If it is determined in step S21 that the video switch indicated by Switch_id is not set to the auto switch, the preload command handling process is terminated.
- FIG. 30 is a flowchart for explaining processing (switch command handling processing) when the received video switch command is a switch command.
- step S31 the command analysis unit 45 determines whether or not the switch command Auto Switch flag is an auto switch (a manual switch). If it is determined that the switch is an auto switch, the process proceeds to step S32. In step S ⁇ b> 32, the command analysis unit 45 determines whether the switching destination distribution content has been preloaded. If it is determined that the preload has not been completed, the process proceeds to step S33.
- step S33 it is determined whether or not the video switching indicated by Switch_id is set to the auto switch according to the preselect command transmitted prior to the switch command. If it is determined that the auto switch is set, the process proceeds to step S34.
- step S ⁇ b> 34 the command analysis unit 45 notifies the control unit 32 of the switch command analysis results so far. In response to this notification, the control unit 32 controls each related unit to start preparation for receiving the delivery content to be switched to.
- step S35 the control unit 32 controls each related unit to switch the video to that of the distribution content of the switching destination.
- step S32 If it is determined in step S32 that the switching destination distribution content has been preloaded, the processes in steps S33 and S34 are skipped. If it is determined in step S33 that the video switch indicated by Switch_id is not set to the auto switch according to the preselect command transmitted prior to the switch command, steps S34 and S35 are skipped, The switch command handling process is terminated without switching the video.
- step S31 If it is determined in step S31 that the switch command Auto Switch flag is not an auto switch (a manual switch), the process proceeds to step S36.
- step S ⁇ b> 36 the command analysis unit 45 notifies the control unit 32 of the switch command analysis results so far.
- the control unit 32 presents to the user the question text described in Switching message of the switch command, selects whether to switch the video, and determines whether switching is selected in step S37. To do. If switching video is selected, the process proceeds to step S34, and step S34 and subsequent steps are executed.
- the video command is not switched and the switch command handling process is terminated.
- FIG. 31 is a flowchart for explaining processing (enable switch command handling processing) when the received video switch command is an enable switch command.
- step S41 the control unit 32 acquires and analyzes the VRT by controlling each related unit based on the switching-meta-URL of the enable switch command.
- step S42 the control unit 32 enables the viewpoint to be switched, and presents to the user that the viewpoint can be switched by, for example, displaying an arrow indicating the direction of the switchable viewpoint on the screen. This is the end of the enable switch command handling process.
- FIG. 32 is a flowchart for explaining processing (disable switch command response processing) when the received video switch command is a disable switch command.
- step S51 the control unit 32 invalidates the acquired VRT according to the enable switch command. This makes it impossible to switch viewpoints. Thus, the disable switch command handling process is completed.
- the first to sixth continuous reproduction scenarios described above are realized by the reception processing described above.
- a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a program recording medium in a general-purpose personal computer or the like.
- FIG. 33 is a block diagram illustrating a configuration example of hardware of a computer that executes the above-described series of processing by a program.
- a CPU Central Processing Unit
- ROM Read Only Memory
- RAM Random Access Memory
- An input / output interface 105 is further connected to the bus 104.
- the input / output interface 105 includes an input unit 106 including a keyboard, a mouse, and a microphone, an output unit 107 including a display and a speaker, a storage unit 108 including a hard disk and a non-volatile memory, and a communication unit 109 including a network interface.
- a drive 110 for driving a removable medium 111 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is connected.
- the CPU 101 loads the program stored in the storage unit 108 to the RAM 103 via the input / output interface 105 and the bus 104 and executes the program, as described above. A series of processing is performed.
- the program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.
- the program may be processed by a single computer or may be distributedly processed by a plurality of computers. Furthermore, the program may be transferred to a remote computer and executed.
- system represents the entire apparatus composed of a plurality of apparatuses.
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Abstract
Description
次に、上述した第1乃至第6の連続再生シナリオを実現する、本開示の実施の形態であるコンテンツ視聴システムの構成例について説明する。
図15は、ビデオスイッチコマンドの送信タイミングを示している。同図示されるように、ビデオスイッチコマンドは、コンテンツ受信装置30での受信ミスを抑止するために、同一のものが映像ストリームまたは音声ストリームに複数回連続的に埋め込まれて放送される。
次に、5種類のビデオスイッチコマンドについて説明する。ビデオスイッチコマンドは、スイッチコマンド、プリロードコマンド、プリセレクトコマンド、イネーブルスイッチコマンド、またはディセーブルスイッチコマンドのいずれかに分類される。
command_idは、当該ビデオスイッチコマンドの識別情報である。Switch_idは、映像を切り替える各事象に対して付与される識別情報である。Command codeは、当該ビデオスイッチコマンドがイネーブルスイッチコマンドであることを示すコード番号である。Switching Meta URLは、VRTの取得先URLを示す。
次に、上述したビデオスイッチコマンドの4種類の利用例について説明する。なお、これら4種類の利用例は、上述した第1乃至第5の連続再生シナリオにおいて適宜採用することができる。
次に、図27は、コンテンツ再生装置30による再生処理を説明するフローチャートである。
Claims (14)
- コンテンツ再生装置に対して映像コンテンツを供給するコンテンツ供給装置において、
再生する映像コンテンツの切り替えに関する処理を前記コンテンツ再生装置に実行させるためのビデオスイッチコマンドを生成する生成部と、
生成された前記ビデオスイッチコマンドを埋め込んだ映像コンテンツを放送網を介して放送する放送部と、
映像コンテンツをインターネットを介して配信する配信部と
を備えるコンテンツ供給装置。 - 前記生成部は、
再生する映像コンテンツの切り替えタイミングに先行して、再生する映像コンテンツの切り替えの実行の可否をユーザに確認させるプリセレクトコマンド、
再生する映像コンテンツの切り替えタイミングに先行して、切替え先の映像コンテンツを取得させるプリロードコマンド、
または、再生する映像コンテンツを切り替えさせるスイッチコマンド
としての前記ビデオスイッチコマンドを生成する
請求項1に記載のコンテンツ供給装置。 - 前記生成部は、再生する映像コンテンツを切り替えた後、切替え前の映像ストリームに復帰するに際して、ループバックを行うか否かを指示するための要素を含む前記ビデオスイッチコマンドを生成する
請求項2に記載のコンテンツ供給装置。 - 前記生成部は、切替え先の映像コンテンツを取得するに際してユーザ認証を行うか否かを指示するための要素を含む前記ビデオスイッチコマンドを生成する
請求項2に記載のコンテンツ供給装置。 - 前記生成部は、
前記プリセレクトコマンド、
前記プリロードコマンド、
前記スイッチコマンド、
ユーザが指定する視点に対応する映像コンテンツに切替え可能な状態とさせるイネーブルスイッチコマンド、
または、ユーザが指定する視点に対応する映像コンテンツに切替え可能な状態を終了させるディセーブルスイッチコマンド
としての前記ビデオスイッチコマンドを生成する
請求項2に記載のコンテンツ供給装置。 - 前記配信部も、生成された前記ビデオスイッチコマンドを埋め込んだ映像コンテンツをインターネットを介して配信する
請求項2に記載のコンテンツ供給装置。 - コンテンツ再生装置に対して映像コンテンツを供給するコンテンツ供給装置のコンテンツ供給方法において、
コンテンツ供給装置による、
再生する映像コンテンツの切り替えに関する処理を前記コンテンツ再生装置に実行させるためのビデオスイッチコマンドを生成する生成ステップと、
生成された前記ビデオスイッチコマンドを埋め込んだ映像コンテンツを放送網を介して放送する放送ステップと、
映像コンテンツをインターネットを介して配信する配信ステップと
を含むコンテンツ供給方法。 - コンテンツ再生装置に対して映像コンテンツを供給するコンピュータを、
再生する映像コンテンツの切り替えに関する処理を前記コンテンツ再生装置に実行させるためのビデオスイッチコマンドを生成する生成部と、
生成された前記ビデオスイッチコマンドを埋め込んだ映像コンテンツを放送網を介して放送する放送部と、
映像コンテンツをインターネットを介して配信する配信部と
して機能させるプログラム。 - コンテンツ供給装置から供給された映像コンテンツを再生するコンテンツ再生装置において、
放送網を介して放送された映像コンテンツ、またはインターネットを介して配信された映像コンテンツを取得する取得部と、
取得された前記映像コンテンツに埋め込まれているビデオスイッチコマンドを解析する解析部と、
前記ビデオスイッチコマンドの解析結果に従い、再生する映像コンテンツの切り替えに関する処理を制御する制御部と
を備えるコンテンツ再生装置。 - 前記ビデオスイッチコマンドは、
再生する映像コンテンツの切り替えタイミングに先行して、再生する映像コンテンツの切り替えの実行の可否をユーザに確認させるプリセレクトコマンド、
再生する映像コンテンツの切り替えタイミングに先行して、切替え先の映像コンテンツを取得させるプリロードコマンド、
または、再生する映像コンテンツを切り替えさせるスイッチコマンド
である
請求項9に記載のコンテンツ再生装置。 - 放送網を介して放送された前記映像コンテンツをバッファリングするバッファ部を
さらに備え、
前記ビデオスイッチコマンドは、再生する映像コンテンツを切り替えた後、切替え前の映像ストリームに復帰するに際して、ループバックを行うか否かを指示するための要素を含む
請求項10に記載のコンテンツ再生装置。 - コンテンツ供給装置から供給された映像コンテンツを再生するコンテンツ再生装置のコンテンツ再生方法において、
コンテンツ再生装置による、
放送網を介して放送された映像コンテンツ、またはインターネットを介して配信された映像コンテンツを取得する取得ステップと、
取得された前記映像コンテンツに埋め込まれているビデオスイッチコマンドを解析する解析ステップと、
前記ビデオスイッチコマンドの解析結果に従い、再生する映像コンテンツの切り替えに関する処理を制御する制御ステップと
を含むコンテンツ再生方法。 - コンテンツ供給装置から供給された映像コンテンツを再生するコンピュータを、
放送網を介して放送された映像コンテンツ、またはインターネットを介して配信された映像コンテンツを取得する取得部と、
取得された前記映像コンテンツに埋め込まれているビデオスイッチコマンドを解析する解析部と、
前記ビデオスイッチコマンドの解析結果に従い、再生する映像コンテンツの切り替えに関する処理を制御する制御部と
して機能させるプログラム。 - コンテンツ供給装置とコンテンツ再生装置からなるコンテンツ視聴システムにおいて、
コンテンツ供給装置は、
再生する映像コンテンツの切り替えに関する処理を前記コンテンツ再生装置に実行させるためのビデオスイッチコマンドを生成する生成部と、
生成された前記ビデオスイッチコマンドを埋め込んだ映像コンテンツを放送網を介して放送する放送部と、
映像コンテンツをインターネットを介して配信する配信部と
を備え、
コンテンツ再生装置は、
放送網を介して放送された映像コンテンツ、またはインターネットを介して配信された映像コンテンツを取得する取得部と、
取得された前記映像コンテンツに埋め込まれているビデオスイッチコマンドを解析する解析部と、
前記ビデオスイッチコマンドの解析結果に従い、再生する映像コンテンツの切り替えに関する処理を制御する制御部と
を備える
コンテンツ視聴システム。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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JP2012536382A JP6184100B2 (ja) | 2010-10-01 | 2011-09-22 | コンテンツ供給装置、コンテンツ供給方法、コンテンツ再生装置、コンテンツ再生方法、プログラム、およびコンテンツ視聴システム |
MX2013003408A MX2013003408A (es) | 2010-10-01 | 2011-09-22 | Dispositivo de suministro de contenidos, metodos de suministro de contenidos, dispositivo de reproduccion de contenidos, metodo de reproduccion de contenidos, programa y sistema de visualizacion de contenidos. |
CN201180045978.4A CN103119959B (zh) | 2010-10-01 | 2011-09-22 | 内容提供装置、内容提供方法、内容再现装置、内容再现方法 |
RU2013113234/07A RU2564132C2 (ru) | 2010-10-01 | 2011-09-22 | Устройство подачи контента, способ подачи контента, устройство воспроизведения контента, способ воспроизведения контента и система просмотра контента |
EP11828915.6A EP2602995A4 (en) | 2010-10-01 | 2011-09-22 | Content release device, content release process, content reproduction device, content reproduction process, program and content display system |
BR112013006942-2A BR112013006942A2 (pt) | 2010-10-01 | 2011-09-22 | dtspositivo e método de suprimento de conteúdo, programa, disposttivo e método de reprodução de conteúdo, programa, e, sistema de visualizaçãq de conteúdo |
KR1020137007361A KR101855540B1 (ko) | 2010-10-01 | 2011-09-22 | 콘텐츠 공급 장치, 콘텐츠 공급 방법, 콘텐츠 재생 장치, 콘텐츠 재생 방법, 프로그램 및 콘텐츠 시청 시스템 |
CA2809316A CA2809316C (en) | 2010-10-01 | 2011-09-22 | Content supplying device, content supplying method, content reproducing device, content reproducing method, program, and content viewing system |
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CA2809316A1 (en) | 2012-04-05 |
RU2564132C2 (ru) | 2015-09-27 |
RU2013113234A (ru) | 2014-09-27 |
EP2602995A1 (en) | 2013-06-12 |
KR101855540B1 (ko) | 2018-05-04 |
BR112013006942A2 (pt) | 2020-09-29 |
US20150100997A1 (en) | 2015-04-09 |
US20120084829A1 (en) | 2012-04-05 |
JP6184100B2 (ja) | 2017-08-23 |
US9479833B2 (en) | 2016-10-25 |
JPWO2012043358A1 (ja) | 2014-02-06 |
CN103119959A (zh) | 2013-05-22 |
CA2809316C (en) | 2020-12-01 |
US20170099522A1 (en) | 2017-04-06 |
KR20130105637A (ko) | 2013-09-25 |
US8908103B2 (en) | 2014-12-09 |
MX2013003408A (es) | 2013-05-09 |
EP2602995A4 (en) | 2014-03-12 |
US11425463B2 (en) | 2022-08-23 |
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