WO2012096202A1 - 送信装置、送信方法、受信装置、受信方法、プログラム、およびコンテンツ配信システム - Google Patents
送信装置、送信方法、受信装置、受信方法、プログラム、およびコンテンツ配信システム Download PDFInfo
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- WO2012096202A1 WO2012096202A1 PCT/JP2012/050059 JP2012050059W WO2012096202A1 WO 2012096202 A1 WO2012096202 A1 WO 2012096202A1 JP 2012050059 W JP2012050059 W JP 2012050059W WO 2012096202 A1 WO2012096202 A1 WO 2012096202A1
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Definitions
- the present invention relates to a transmission device, a transmission method, a reception device, a reception method, a program, and a content distribution system, and in particular, a transmission device and a transmission method that are suitable for use when distributing content using a network or a broadcast as needed.
- the present invention relates to a receiving device, a receiving method, a program, and a content distribution system.
- Patent Document 1 a service for distributing contents such as television programs and movies via a network represented by the Internet has been realized by unicast distribution (see, for example, Patent Document 1).
- FIG. 1 shows a configuration example for realizing unicast distribution.
- each terminal device 4 accesses the distribution server 1 via the Internet 2 and requests distribution of content.
- the distribution server 1 distributes contents to each terminal device 4 via the Internet 2. That is, in the unicast distribution, the distribution server 1 and each terminal device 4 communicate one to one. In this case, when the number of terminal devices 4 increases, the processing load of the distribution server 1 increases and the amount of data communication in the network 2 increases.
- the content is multicasted in addition to caching the content in the router 3 of each ISP (internetinterservice provider) that constitutes the Internet 2.
- ISP Internetinterservice provider
- FIG. 2 shows a configuration example for realizing IP multicast distribution.
- IP multicast distribution when a terminal device 4 that wants to belong to a multicast group 5 (a group of terminal devices 4 that can receive broadcasted content) notifies the router 3 that constitutes the Internet 2 to that effect, each router 3 cooperates.
- a multicast distribution tree is configured. With this multicast distribution tree, the content from the distribution server 1 is broadcast only to the multicast group 5.
- each router 3 needs to be compatible with IP multicast distribution (having a function of cooperating to form a multicast distribution tree).
- the Internet 2 is composed of routers 3 operated by a number of different ISPs, and there are many routers 3 that do not support IP multicast distribution, so it is difficult to realize IP multicast distribution. .
- FIG. 3 shows a configuration example for realizing overlay multicast delivery.
- the overlay multicast distribution is realized by an application program executed by the terminal device 4 without depending on the function of the router 3. That is, in the overlay multicast distribution, when the terminal device 4A receives the content from the distribution server 1 via the Internet 2, information indicating that the received content can be relayed to another terminal device 4 is disclosed. When another terminal device 4 (for example, the terminal device 4C) requests the terminal device 4A to relay based on the disclosed information, the terminal device 4A relays the received content to the other terminal device 4. Similarly to the terminal device 4A, the other terminal device 4 that has received the relayed content can also relay the content to another terminal device (for example, the terminal device 4D).
- another terminal device 4 for example, the terminal device 4C
- the terminal device 4C that desires to relay the content needs to search for the terminal device 4A that can relay the content. Further, the terminal device 4A that relays the content is required to have a processing capability for maintaining an upstream communication speed comparable to the downstream communication speed of the content via the Internet 2. Furthermore, there is a problem that the content that has been relayed is degraded in quality (such as a large delay) as compared to the content directly distributed from the distribution server 1.
- the present invention has been made in view of such a situation, and enables content to be stably supplied to a large number of terminal devices.
- the transmission device is notified from the transmission device that supplies the content, the transmission unit that transmits the content to the reception device via the network, and the reception device that has received the content.
- a manifest file receiving means for receiving a manifest file indicating the quality of the content; an analyzing means for analyzing the received manifest file; and a broadcasting means for distributing the content by broadcasting based on an analysis result of the manifest file; Delivery means for delivering the received manifest file.
- the analyzing means detects presence / absence of quality deterioration of the content based on the received manifest file, and the broadcasting means distributes the content by broadcasting when the quality deterioration of the content is detected. it can.
- the distribution unit When the content is distributed by broadcast based on the analysis result of the manifest file, the distribution unit adds information for receiving the content distributed by broadcast to the received manifest file and distributes the content can do.
- the transmission device acquires a reception report indicating that the content is received, which is notified from the reception device that has received the content distributed by broadcasting, and has acquired the content
- the information processing apparatus may further include reception report acquisition means for determining whether or not the distribution of the content broadcast is continued based on the number of reception reports.
- the broadcast report acquisition means determines that the distribution of the content by broadcasting is not continued, the broadcast report is controlled by the broadcast means to distribute the broadcast distribution stop notice indicating that the distribution of the content by broadcasting is stopped. Can be made.
- a transmission method is a transmission method of a transmission device that supplies content, wherein the broadcasting device transmits the content to a reception device via a network, and the content is received.
- the manifest file receiving step for receiving the manifest file indicating the quality of the content, which is notified from the receiving device, the analyzing step for analyzing the received manifest file, and the content based on the analysis result of the manifest file
- a program is a program for controlling a transmission device that supplies content, and includes a transmission step of transmitting the content to a reception device via a network, and the reception of the content received
- a manifest file reception step of receiving a manifest file indicating the quality of the content notified from the device, an analysis step of analyzing the received manifest file, and the content based on the analysis result of the manifest file by broadcasting
- the computer of a transmission apparatus is made to perform the process including the broadcast step to distribute, and the distribution step to distribute the received manifest file.
- content is transmitted to a receiving device via a network, a manifest file indicating the quality of the content notified from the receiving device that has received the content is received, and the received manifest file Content is distributed by broadcast based on the analysis result.
- the receiving apparatus generates a manifest file indicating the quality of the received content and receiving means for receiving the content transmitted via a network in the receiving apparatus for receiving the content Notification means for notifying the transmitting apparatus, and relay means for relaying the received content to another receiving apparatus via the network.
- the reception device further includes a manifest file acquisition unit that acquires the manifest file distributed by the transmission device and generated by another reception device, wherein the reception unit is acquired Based on the manifest file, another content receiving device can be accessed and the content relayed from the other content receiving device can be received.
- the receiving apparatus further includes conversion means for converting an encoding method of the received content, and the relay means receives the content that has been received and converted in encoding method. It can be relayed to other receiving apparatuses via the network.
- the manifest file may include at least one of a delay amount, a packet loss number, and a jitter amount when the content is received as information indicating the quality of the content.
- the receiving method according to the second aspect of the present invention is a receiving method of a receiving apparatus for receiving content, wherein the receiving method receives the content transmitted via a network according to the receiving method, and the received content.
- a program according to a second aspect of the present invention is a program for controlling a receiving device that receives content, and includes a reception step of receiving the content transmitted via a network, and the quality of the received content
- the receiving device computer executes a process including a notification step of generating a manifest file indicating the above and notifying the transmitting device, and a relaying step of relaying the received content to another receiving device via the network. .
- content transmitted via the network is received, a manifest file indicating the quality of the received content is generated and notified to the transmission device, and the received content is transmitted via the network. Relayed to other receivers.
- a content distribution server is a content distribution system including a transmission device that transmits content and a reception device that receives the transmitted content.
- the transmission device transmits the content via a network.
- a distribution unit an analysis unit that analyzes the received manifest file; and a broadcast unit that distributes the content by broadcasting based on an analysis result of the manifest file.
- the reception device receives the content transmitted via the network, a notification unit that generates a manifest file indicating the quality of the received content and notifies the transmission device; Relay means for relaying the received content to another receiving device via the network.
- the transmitting device transmits the content to the receiving device via the network, and receives and receives the manifest file indicating the quality of the content notified from the receiving device that has received the content.
- Content is distributed by broadcasting based on the analysis result of the manifest file.
- the content transmitted via the network is received by the receiving device, a manifest file indicating the quality of the received content is generated and notified to the transmitting device, and the received content is received by other receiving via the network. Relayed to the device.
- content can be stably transmitted to a large number of receiving devices.
- content can be received stably.
- content can be stably distributed to a large number of receiving devices.
- FIG. 4 shows a configuration example of the content distribution system according to the embodiment of the present invention.
- the content distribution system 10 includes a content distribution server 11, a manifest file distribution server 12, and a TV broadcast device 13 that are provided on the content transmission (supply) side, and a large number of content provided on the content reception (acquisition) side.
- the terminal device 21 is configured. Each terminal device 21 can communicate with the content distribution server 11 and the manifest file distribution server 12 via the Internet 2.
- the terminal device 21 is also referred to as a node. Further, when it is necessary to distinguish each terminal device 21 individually, the terminal devices 21A and 21B (nodes A and B) are referred to.
- the content distribution server 11 mainly performs streaming distribution of content via the Internet 2.
- the manifest file distribution server 12 mainly distributes the manifest file notified from the terminal device 21 through the TV broadcast network.
- the manifest file distribution server 12 supplies the manifest file via the Internet 2 in response to a request from the terminal device 21.
- the TV broadcasting device 13 mainly distributes content by broadcasting according to control from the content distribution server 11.
- the TV broadcast device 13 distributes the manifest file through the TV broadcast network in accordance with control from the manifest file distribution server 12.
- the TV broadcast network used by the TV broadcast device 13 is not limited to any one of a satellite broadcast network, a terrestrial digital broadcast network, a cable TV broadcast network, a mobile phone broadcast network, and the like, and is arbitrary.
- Each terminal device 21 holds URLs of the content distribution server 11 and the manifest file distribution server 12 in advance, and can communicate with the content distribution server 11 and the manifest file distribution server 12 via the Internet 2.
- FIG. 5 shows a configuration example of the content distribution server 11.
- the content distribution server 11 includes a content streaming distribution unit 31 and a content broadcast control unit 32.
- the content streaming distribution unit 31 performs streaming distribution of content via the Internet 2 in response to a request from the terminal device 2 via the Internet 2.
- the content broadcast control unit 32 controls the TV broadcast device 13 to distribute the content by broadcasting.
- FIG. 6 shows a configuration example of the manifest file distribution server 12.
- the manifest file distribution server 12 includes a manifest file acquisition unit 41, a manifest file analysis unit 42, a manifest file distribution unit 43, a content distribution server control unit 44, and a reception report acquisition unit 45.
- the manifest file acquisition unit 41 acquires a manifest file periodically notified from the terminal device 21 that has acquired the content.
- the manifest file includes information (hereinafter referred to as relay quality information) indicating a situation such as a delay amount and packet loss when the terminal device 21 that has acquired the content acquires the content.
- relay quality information information indicating a situation such as a delay amount and packet loss when the terminal device 21 that has acquired the content acquires the content.
- the manifest file analysis unit 42 analyzes the relay quality information of the manifest file acquired by the manifest file acquisition unit 41.
- the manifest file distribution unit 43 causes the TV broadcast device 13 to broadcast the manifest file acquired by the manifest file acquisition unit 41 via the content distribution server control unit 44.
- the manifest file distribution unit 43 supplies the manifest file acquired by the manifest file acquisition unit 41 to the terminal device 21 that has requested through the Internet 2.
- the content distribution server control unit 44 controls the content distribution server 11 to control the start and stop of streaming distribution by content broadcasting.
- the reception report acquisition unit 45 causes the TV broadcast device 13 to broadcast a reception report request via the content distribution server control unit 44.
- the reception report is returned from the terminal device 21 that receives the content that is streamed by broadcasting, and is used for measuring the total number of the terminal devices 21 that are receiving the content.
- FIG. 7 shows a configuration example of the terminal device 21.
- the terminal device 21 includes a content acquisition unit 51, a manifest file generation unit 52, a content holding unit 53, a manifest file acquisition unit 54, a content conversion unit 55, a content reproduction unit 56, and a content relay unit 57.
- the content acquisition unit 51 accesses the content distribution server 11 whose URL is known via the Internet 2 and acquires the content distributed from the content distribution server 11. Also, the content acquisition unit 51 accesses another terminal device 21 based on the distributed manifest file, and acquires the content that the other terminal device 21 relays streaming distribution. Furthermore, based on the distributed manifest file, the content acquisition unit 51 acquires the content by receiving the broadcast when the desired content is distributed by broadcast.
- the manifest file generation unit 52 generates a manifest file corresponding to the acquired content, and transmits it to the manifest file distribution server 12 via the Internet 2.
- FIG. 8 shows each item constituting the manifest file.
- the manifest file is generated including relay quality information 61, attribute information 62, and one or more content relay source URLs 63. Further, channel information 64 at the time of broadcast distribution may be added to the manifest file.
- the relay quality information 61 includes the amount of delay, the number of packet losses, the amount of jitter, etc. occurring in the acquired content.
- the relay quality information 61 indicates the quality of content that the terminal device 21 can relay to other terminal devices 21.
- the relay quality information 61 is used as information for determining whether or not another terminal device 21 requests the terminal device 21 to relay content.
- the delay amount is based on the timing at which the content is distributed from the content distribution server 11, and is calculated as the difference between the time received at the terminal device 21 from the transmission time included in the content streaming packet. Is done.
- the attribute information 62 includes content attribute metadata including the title and outline of the content, the original bit rate and codec type of the content, and the codec type that can be converted by the terminal device 21.
- the metadata of the encoding attribute which shows is included.
- the URL of the communication port of the content relay unit 57 that is different for each type of codec that can be converted by the terminal device 21 is described. However, when the terminal device 21 does not have a function of converting the codec or the like of the original content, only one content relay source URL 63 is described.
- the channel information 64 at the time of broadcast distribution is added by the manifest file distribution server 12 when the corresponding content is distributed by streaming.
- the channel information 64 at the time of broadcast distribution describes a broadcast channel through which the content is streamed.
- the content holding unit 53 temporarily holds the content acquired by the content acquisition unit 51.
- the manifest file acquisition unit 54 automatically acquires and holds a manifest file that is broadcast from the TV broadcasting device 13 and is generated by another terminal device 21. Further, the manifest file acquisition unit 54 can access the manifest file distribution server 12 via the Internet 2 and request the supply of the manifest file generated by the other terminal device 21. In this case, the manifest file distribution server 12 supplies the manifest file via the Internet 2.
- the content conversion unit 55 converts the encoding method (bit rate, codec, etc.) of the content held in the content holding unit 53 into one or more predetermined encoding methods and outputs the converted one to the content relay unit 57 To do.
- the type of encoding method that can be converted by the content conversion unit 55 may be set according to the processing capability of each terminal device 21. Further, the content conversion unit 55 may be omitted, that is, the acquired content may be relayed as it is.
- the content reproduction unit 56 reproduces the content held in the content holding unit 53, and outputs the video signal and audio signal obtained as a result to a subsequent monitor (not shown).
- the content relay unit 57 has a plurality of communication ports for the Internet 2, and the content held in the content holding unit 53 according to the communication ports accessed by other terminal devices 21 via the Internet 2, Alternatively, the content whose encoding method has been converted by the content conversion unit 55 is streamed to the other terminal device 21.
- FIG. 9 is a flowchart for explaining the reproduction process by the terminal device 21. This reproduction process is started when the user of the terminal device 21 selects content to be viewed by a predetermined operation.
- step S1 the content acquisition unit 51 determines whether or not the manifest file corresponding to the selected content has already been acquired by the manifest file acquisition unit 54. If it is determined that the corresponding manifest file has not been acquired, the process proceeds to step S2.
- step S2 the content acquisition unit 51 accesses the known content distribution server 11 via the Internet 2 and requests streaming distribution of the selected content.
- the content distribution server 11 starts streaming distribution of the selected content to the terminal device 21.
- step S3 the content acquisition unit 51 analyzes the acquired manifest file and selects a node (other terminal device 21) that can relay the selected content.
- the content acquisition unit 51 accesses the selected other terminal device 21 (the communication port of the content relay unit 57) via the Internet 2 and requests streaming distribution of the selected content.
- streaming distribution of the selected content is started from another terminal device 21 to the terminal device 21.
- step S4 the content acquisition unit 51 starts receiving content for which streaming distribution has been started.
- the received content is held by the content holding unit 53 and is started to be played back by the content playback unit 56.
- step S5 the manifest file generation unit 52 generates a manifest file corresponding to the content for which reception has been started, and transmits the manifest file to the manifest file distribution server 12 via the Internet 2. Further, the manifest file generation unit 52 updates the manifest file in response to a change in the reception status (delay amount, etc.) during the period in which the content is received, and transmits the updated manifest file to the manifest file distribution server 12.
- the transmitted manifest file is periodically and repeatedly distributed from the TV broadcasting device 13 by broadcasting according to the control of the manifest file distribution server 12. Above, description of the reproduction
- FIG. 10 is a flowchart for explaining relay processing by the terminal device 21. This relay process is started in response to another terminal device 21 accessing the content relay unit 57 via the Internet 2.
- step S11 the content conversion unit 55 determines the encoding method according to the communication port of the content relay unit 57 accessed by another terminal device 21.
- step S12 the content conversion unit 55 converts the content encoding method held in the content holding unit 53 into the encoding method determined in step S11, and outputs the result to the content relay unit 57.
- the encoding method determined in step S11 is the same as the content encoding method held in the content holding unit 53
- the content conversion unit 55 outputs the held content as it is to the content relay unit 57.
- step S13 the content relay unit 57 starts streaming distribution of the content input from the content conversion unit 55 via the communication port accessed by the other terminal device 21 and the Internet 2. Above, description of the relay process by the terminal device 21 is complete
- FIG. 11 is a flowchart for explaining processing of the manifest file distribution server 12.
- the manifest file distribution server 12 repeatedly executes the process described below continuously.
- step S21 the manifest file acquisition unit 41 waits until it is determined that a predetermined number of manifest files transmitted from each terminal device 21 via the Internet 2 have been received. If it is determined that a predetermined number of manifest files have been received, the process proceeds to step S22.
- the manifest file analysis unit 42 analyzes the relay quality information of the received manifest file, and determines whether or not the quality is deteriorated in the content distributed or relayed via the Internet 2. Specifically, a ratio of a predetermined number of received manifest files in which at least one of delay amount, packet loss number, jitter amount, etc. included in the relay quality information exceeds a predetermined threshold is constant. When the reference value is exceeded, it is determined that quality degradation has occurred.
- step S23 the manifest file distribution unit 43 controls the TV broadcast device 13 to distribute the received manifest file by broadcasting. Thereafter, the process returns to step S21.
- step S24 the content distribution server control unit 44 requests the content distribution server 11 to broadcast and distribute the content corresponding to the received manifest file.
- the content broadcast control unit 32 of the content distribution server 11 controls the TV broadcast device 13 to start streaming distribution by broadcasting the content.
- step S25 the manifest file distribution unit 43 changes the received manifest file, that is, adds the channel information 64 at the time of broadcast distribution to the received manifest file, and distributes the updated manifest file by broadcast.
- the manifest file distribution unit 43 supplies the changed manifest file to the terminal device 21 that has requested it via the Internet 2.
- the content is not only distributed via the network 2 but also distributed via the broadcasting network.
- the terminal device 21 since each terminal device 21 detects that the content is distributed by broadcasting from the updated manifest file, the terminal device 21 capable of receiving the broadcast is stably distributed by broadcasting. Will receive the content.
- step S26 the reception report acquisition unit 45 requests the TV broadcast device 13 to distribute the reception report request.
- the TV broadcast device 13 distributes the reception report request by broadcasting.
- This reception report request is received by the terminal device 21 that is receiving the content that is being streamed by broadcasting.
- a reception report indicating that the content being streamed by broadcasting is being received is sent back to the manifest file distribution server 12 via the Internet 2.
- step S27 the reception report acquisition unit 45 evaluates the broadcast cost based on the number of replies of the reception report returned from the terminal device 21 that is receiving the content distributed by broadcasting. Further, based on the evaluation result, the reception report acquisition unit 45 determines whether or not to continue streaming distribution by broadcasting the content in step S28.
- the cost is higher than when the content is streamed via the Internet 2, but whether or not the number of viewers can be met by the cost. Based on this, it is determined whether or not to continue streaming delivery by broadcasting. Specifically, when the number of received report replies is equal to or greater than a predetermined threshold, it is determined that streaming delivery by broadcasting is continued.
- step S28 If it is determined in step S28 that the streaming distribution by the content broadcast is to be continued, the process returns to step S26, and steps S26 to S28 are repeated.
- step S29 when it is determined that the number of viewers of the content being streamed by broadcasting (the number of replies to the reception report) is reduced and the streaming delivery by broadcasting the content is to be stopped, the process proceeds to step S29.
- step S29 the reception report acquisition unit 45 requests the TV broadcast device 13 to distribute a broadcast distribution stop notice indicating that streaming distribution due to the content broadcast will be stopped soon.
- the TV broadcast device 13 delivers a broadcast distribution stop notice by broadcasting.
- the content acquisition is changed to distribution via the Internet 2 based on the acquired manifest file.
- the terminal device 21 transmits a manifest file indicating the quality of the received content to the manifest file distribution server 12.
- the manifest file acquisition unit 41 receives the manifest file transmitted from the terminal device 21.
- the manifest file analysis unit 42 analyzes the relay quality information of the received manifest file and waits until it is determined that the quality deterioration of the content distributed or relayed via the Internet 2 has been recovered. Specifically, this determination is a ratio of a plurality of received manifest files in which at least one of a delay amount, a packet loss number, a jitter amount, etc. included in the relay quality information exceeds a predetermined threshold value. Is less than a certain reference value, it is determined that the quality deterioration has been recovered.
- step S30 If it is determined in step S30 that the quality degradation of the content distributed or relayed via the Internet 2 has been recovered, the process proceeds to step S31.
- step S31 the content distribution server control unit 44 requests the content distribution server 11 to stop the streaming distribution of the content corresponding to the received manifest file.
- the manifest file distribution unit 43 distributes the received manifest file by broadcasting.
- the manifest file distribution unit 43 also supplies the manifest file to the terminal device 21 that has requested it via the Internet 2.
- the content broadcast control unit 32 of the content distribution server 11 controls the TV broadcast device 13 to start streaming distribution by broadcasting the content. Thereafter, the process returns to step S21, and the subsequent steps are repeated. Above, description of the process of the manifest file delivery server 12 is complete
- the terminal device 21A (node A) acquires content X from the content distribution server 11
- the terminal device 21B (node B) acquires content X relayed from the node A
- the terminal device 21C (node C). Shows an operation scenario when the content X relayed from the node B is acquired.
- the node A accesses the content distribution server 11 via the Internet 2 and requests streaming distribution of the content X. In response to this request, the content distribution server 11 starts streaming distribution of the content X to the node A via the Internet 2.
- the node A that has started receiving the content distributed by streaming generates a manifest file corresponding to the content X, and transmits the generated manifest file to the manifest file distribution server 12 via the Internet 2.
- the manifest file distribution server 12 that has received the transmitted manifest file determines whether or not the content X has deteriorated based on the relay quality information of the manifest file. If it is determined that no quality degradation has occurred, the manifest file is distributed from the TV broadcast device 13 by broadcasting.
- the distributed manifest file is received by each node. After that, when the user of the node B instructs the reception of the content X, the node B refers to the manifest file generated by the node A corresponding to the content X that is already held, and distributes the content to the node A by streaming. (Relay) is requested. In response to this request, the node A starts streaming distribution (relay) of the content X to the node B via the Internet 2.
- the node B that has started receiving the relayed content generates a manifest file corresponding to the content X relayed by the node A, and transmits the generated manifest file to the manifest file distribution server 12 via the Internet 2.
- the manifest file distribution server 12 that has received the transmitted manifest file determines whether or not the content X has deteriorated based on the relay quality information of the manifest file. If it is determined that no quality degradation has occurred, the manifest file is distributed from the TV broadcast device 13 by broadcasting.
- the distributed manifest file is received by each node. Thereafter, when the user of the node C instructs the reception of the content X, the node C refers to the manifest file generated by the node A or B corresponding to the content X already held, Request streaming delivery (relay). In response to this request, the node B starts streaming distribution (relay) of the content X to the node C via the Internet 2.
- FIG. 13 shows an operation scenario when the content X is streamed even by broadcasting in response to the quality degradation occurring in the content X being relayed.
- the manifest file distribution server 12 that has received the manifest file transmitted from the node B or the like determines the presence or absence of quality degradation of the content X based on the relay quality information of the manifest file.
- the manifest file distribution server 12 requests the content distribution server 11 to control distribution start by broadcasting the content X.
- the content distribution server 11 controls the TV broadcast device 13 to start streaming distribution by broadcasting of the content X.
- the manifest file distribution server 12 changes the manifest file transmitted from the node B (adds channel information 64 at the time of broadcast distribution) and distributes it from the TV broadcast device 13 by broadcast.
- the distributed manifest file is received by each node, and thereafter, when each node receives the content X, the content X distributed by streaming is received.
- FIG. 14 shows an operation scenario when the streaming distribution of the content X broadcast is stopped in response to the decrease in the number of viewers of the content X distributed by broadcasting.
- the manifest file distribution server 12 requests the TV broadcast device 13 to distribute the reception report request.
- the TV broadcast device 13 distributes the reception report request by broadcasting.
- the distributed reception report request is received by the node receiving the content X.
- Each node that has received the reception report request returns a reception report indicating that the content X streamed by broadcasting is being received to the manifest file distribution server 12.
- the manifest file distribution server 11 that has received the reception report evaluates the broadcast cost based on the number of replies of the reception report returned from each node, and determines whether or not to continue streaming distribution of the content X broadcast.
- the manifest file distribution server 11 determines not to continue streaming distribution of the content X broadcast, it requests the TV broadcast apparatus 13 to distribute the broadcast distribution stop notice. In response to this request, the TV broadcast device 13 distributes a broadcast distribution stop notice by broadcasting.
- the node A that has received the broadcast distribution stop notice accesses the content distribution server 11 via the Internet 2 and requests streaming distribution of the content X. In response to this request, the content distribution server 11 starts streaming distribution of the content X to the node A via the Internet 2.
- the node B can also request the content distribution server 11 for streaming distribution of the content X.
- the node A that has started receiving the content distributed by streaming generates a manifest file corresponding to the content X, and transmits the manifest file to the manifest file distribution server 12 via the Internet 2.
- the manifest file distribution server 12 that has received the transmitted manifest file determines whether or not the content X has deteriorated based on the relay quality information of the manifest file. If it is determined that no quality degradation has occurred, the manifest file is distributed from the TV broadcast device 13 by broadcasting.
- the node B that has not requested the content distribution server 11 for the streaming distribution of the content X refers to the distributed manifest file and requests the node A for the streaming distribution (relay) of the content. In response to this request, the node A starts streaming distribution (relay) of the content X to the node B via the Internet 2.
- the node B that has started receiving the relayed content generates a manifest file corresponding to the content X relayed by the node A, and transmits the manifest file to the manifest file distribution server 12 via the Internet 2.
- the manifest file distribution server 12 that has received the transmitted manifest file determines whether or not the content X has deteriorated based on the relay quality information of the manifest file, and determines whether to recover the quality deterioration. If it is determined that the quality degradation has been recovered, the manifest file distribution server 12 requests the content distribution server 11 to stop streaming distribution of the content X by broadcasting. In response to this request, the content distribution server 11 causes the TV broadcast device 13 to stop streaming distribution by broadcasting the content X.
- the content distribution system 10 may start or stop stream distribution by broadcasting content depending on the quality deterioration of the content relayed via the Internet 2 or the phenomenon of the viewer. it can. Accordingly, the content supply side can stably supply the content to a large number of terminal devices while suppressing an increase in cost.
- the content supply side is individually provided as the content distribution server 11, the manifest file distribution server 12, and the TV broadcast device 13, but these can be combined as appropriate. .
- the terminal device 21 can be incorporated in, for example, a TV receiver or a video recorder.
- the series of processes described above can be executed by hardware or software.
- 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. 15 is a block diagram showing an example of the hardware configuration 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. A series of processing is performed.
- the program executed by the computer 100 may be a program that is processed in time series in the order described in this specification, or a necessary timing such as in parallel or when a call is made. It may be a program in which processing is performed.
- 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
[コンテンツ配信システムの構成例]
図4は、本発明の実施の形態であるコンテンツ配信システムの構成例を示している。このコンテンツ配信システム10は、コンテンツを送信(供給)する側に設けられるコンテンツ配信サーバ11、マニフェストファイル配信サーバ12、およびTV放送装置13、並びに、コンテンツを受信(取得)する側に設けられる多数の端末装置21から構成される。各端末装置21は、インタネット2を介してコンテンツ配信サーバ11およびマニフェストファイル配信サーバ12と通信が可能である。
次に、コンテンツ配信システム10の動作について説明する。
次に、コンテンツ配信システム10に対して想定される動作シナリオについて図12乃至図14を参照して説明する。
Claims (14)
- コンテンツを供給する送信装置において、
前記コンテンツをネットワークを介して受信装置に送信する送信手段と、
前記コンテンツを受信した前記受信装置から通知される、前記コンテンツの品質を示すマニフェストファイルを受信するマニフェストファイル受信手段と、
受信された前記マニフェストファイルを解析する解析手段と、
前記マニフェストファイルの解析結果に基づいて前記コンテンツを放送によって配信する放送手段と、
受信された前記マニフェストファイルを配信する配信手段と
を含む送信装置。 - 前記解析手段は、受信された前記マニフェストファイルに基づいて前記コンテンツの品質劣化の有無を検出し、
前記放送手段は、前記コンテンツの品質劣化が検出された場合、前記コンテンツを放送によって配信する
請求項1に記載の送信装置。 - 前記配信手段は、前記マニフェストファイルの解析結果に基づいて前記コンテンツが放送によって配信される場合、放送によって配信される前記コンテンツを受信するための情報を、受信された前記マニフェストファイルに追加して配信する
請求項2に記載の送信装置。 - 放送によって配信される前記コンテンツを受信した前記受信装置から通知される、前記コンテンツを受信していることを示す受信レポートを取得し、取得した前記受信レポートの数に基づいて前記コンテンツの放送による配信の継続の有無を判断する受信レポート取得手段を
さらに含む請求項2または3に記載の送信装置。 - 前記受信レポート取得手段は、前記コンテンツの放送による配信を継続しないと判断した場合、前記放送手段を制御して、前記コンテンツの放送による配信が停止されることを示す放送配信停止予告を放送によって配信させる
請求項4に記載の送信装置。 - コンテンツを供給する送信装置の送信方法において、
前記放送装置による、
前記コンテンツをネットワークを介して受信装置に送信する送信ステップと、
前記コンテンツを受信した前記受信装置から通知される、前記コンテンツの品質を示すマニフェストファイルを受信するマニフェストファイル受信ステップと、
受信された前記マニフェストファイルを解析する解析ステップと、
前記マニフェストファイルの解析結果に基づいて前記コンテンツを放送によって配信する放送ステップと、
受信された前記マニフェストファイルを配信する配信ステップと
を含む送信方法。 - コンテンツを供給する送信装置の制御用のプログラムであって、
前記コンテンツをネットワークを介して受信装置に送信する送信ステップと、
前記コンテンツを受信した前記受信装置から通知される、前記コンテンツの品質を示すマニフェストファイルを受信するマニフェストファイル受信ステップと、
受信された前記マニフェストファイルを解析する解析ステップと、
前記マニフェストファイルの解析結果に基づいて前記コンテンツを放送によって配信する放送ステップと、
受信された前記マニフェストファイルを配信する配信ステップと
を含む処理を送信装置のコンピュータに実行させるプログラム。 - コンテンツを受信する受信装置において、
ネットワークを介して送信された前記コンテンツを受信する受信手段と、
受信された前記コンテンツの品質を示すマニフェストファイルを生成して前記送信装置に通知する通知手段と、
受信された前記コンテンツを前記ネットワークを介して他の受信装置に中継する中継手段と
を含む受信装置。 - 前記送信装置から配信された、他の受信装置が生成した前記マニフェストファイルを取得するマニフェストファイル取得手段を
さらに含み、
前記受信手段は、取得された前記マニフェストファイルに基づいて他の受信装置にアクセスし、前記他の受信装置から中継された前記コンテンツを受信する
請求項8に記載の受信装置。 - 受信された前記コンテンツの符号化方式を変換する変換手段を
さらに含み、
前記中継手段は、受信されて符号化方式が変換された前記コンテンツを前記ネットワークを介して他の受信装置に中継する
請求項9に記載の受信装置。 - 前記マニフェストファイルには、前記コンテンツの品質を示す情報として、前記コンテンツを受信した時の遅延量、パケットロス数、またはジッタ量のうちの少なくとも1つを含む
請求項9または10に記載の送信装置。 - コンテンツを受信する受信装置の受信方法において、
前記受信方法による、
ネットワークを介して送信された前記コンテンツを受信する受信ステップと、
受信された前記コンテンツの品質を示すマニフェストファイルを生成して前記送信装置に通知する通知ステップと、
受信された前記コンテンツを前記ネットワークを介して他の受信装置に中継する中継ステップと
を含む受信方法。 - コンテンツを受信する受信装置の制御用のプログラムであって、
ネットワークを介して送信された前記コンテンツを受信する受信ステップと、
受信された前記コンテンツの品質を示すマニフェストファイルを生成して前記送信装置に通知する通知ステップと、
受信された前記コンテンツを前記ネットワークを介して他の受信装置に中継する中継ステップと
を含む処理を受信装置のコンピュータに実行させるプログラム。 - コンテンツを送信する送信装置と、送信された前記コンテンツを受信する受信装置から成るコンテンツ配信システムにおいて、
前記送信装置は、
前記コンテンツをネットワークを介して前記受信装置に送信する送信手段と、
前記コンテンツを受信した前記受信装置から通知される、前記コンテンツの品質を示すマニフェストファイルを受信するマニフェストファイル受信手段と、
受信された前記マニフェストファイルを配信する配信手段と、
受信された前記マニフェストファイルを解析する解析手段と、
前記マニフェストファイルの解析結果に基づいて前記コンテンツを放送によって配信する放送手段と
を含み、
前記受信装置は、
前記ネットワークを介して送信された前記コンテンツを受信するコンテンツ受信手段と、
受信された前記コンテンツの品質を示すマニフェストファイルを生成して前記送信装置に通知する通知手段と、
受信された前記コンテンツを前記ネットワークを介して他の受信装置に中継する中継手段と
を含む
コンテンツ配信システム。
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EP12733959.6A EP2665260B1 (en) | 2011-01-12 | 2012-01-05 | Transmitting device, transmitting method, receiving device, receiving method, program, and content delivery system |
RU2013130744/08A RU2598596C2 (ru) | 2011-01-12 | 2012-01-05 | Устройство передачи, способ передачи, устройство приема, способ приема, программа и система распределения содержания |
KR1020137015737A KR101924514B1 (ko) | 2011-01-12 | 2012-01-05 | 송신 장치, 송신 방법, 수신 장치, 수신 방법, 프로그램 및 콘텐츠 배신 시스템 |
SG2013052832A SG191910A1 (en) | 2011-01-12 | 2012-01-05 | Transmitting apparatus, transmitting method, receiving apparatus, receiving method, program, and content distribution system |
CN201280004754.3A CN103329561B (zh) | 2011-01-12 | 2012-01-05 | 发送装置、发送方法、接收装置、接收方法和内容发布系统 |
US13/976,116 US8910226B2 (en) | 2011-01-12 | 2012-01-05 | Transmitting apparatus, transmitting method, receiving apparatus, receiving method, program, and content distribution system |
BR112013017426A BR112013017426A2 (pt) | 2011-01-12 | 2012-01-05 | aparelho e método de transmissão para suprimento de conteúdo, programa de transmissão para controlar um aparelho de transmissão, aparelho e método de recepção para receber conteúdo, programa para controlar um aparelho de recepção, e, sistema de distribuição de conteúdo |
US14/541,411 US10432696B2 (en) | 2011-01-12 | 2014-11-14 | Transmitting apparatus, transmitting method, receiving apparatus, receiving method, program, and content distribution system |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6269168B2 (ja) * | 2014-02-28 | 2018-01-31 | 株式会社リコー | 管理装置、通信システム及びプログラム並びに通信管理方法 |
WO2016070380A1 (en) * | 2014-11-06 | 2016-05-12 | Qualcomm Incorporated | Embms session suspend/stop notification |
MX2017015855A (es) * | 2015-06-09 | 2018-06-06 | Arris Entpr Llc | Sincronizacion de cliente de video de transmision por secuencias en vivo http (hls). |
US10838924B2 (en) * | 2017-10-02 | 2020-11-17 | Comcast Cable Communications Management, Llc | Multi-component content asset transfer |
CN107995294B (zh) * | 2017-12-06 | 2020-07-03 | 常熟理工学院 | 一种多跳车联网的实现方法 |
IT201900013227A1 (it) * | 2019-07-29 | 2021-01-29 | Sky Italia S R L | Metodo, dispositivo, sistema, programma per elaboratore e supporto per programma per generare un canale lineare in streaming (Canale lineare in streaming) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009117944A (ja) * | 2007-11-02 | 2009-05-28 | Brother Ind Ltd | ツリー型放送システム、再接続処理方法、ノード装置、ノード処理プログラム、サーバ装置、及びサーバ処理プログラム |
JP2010074360A (ja) * | 2008-09-17 | 2010-04-02 | Ntt Docomo Inc | 放送及び通信システム並びにパラメータ決定装置 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5499046A (en) * | 1994-05-23 | 1996-03-12 | Cable Services Technologies, Inc. | CATV distribution system with each channel having its own remote scheduler |
CA2314038A1 (en) * | 2000-07-13 | 2002-01-13 | Psg Distribution Inc. | Pot-type burner |
US20020065922A1 (en) * | 2000-11-30 | 2002-05-30 | Vijnan Shastri | Method and apparatus for selection and redirection of an existing client-server connection to an alternate data server hosted on a data packet network (DPN) based on performance comparisons |
JP2002251350A (ja) * | 2001-02-22 | 2002-09-06 | Sony Corp | 送信装置、受信装置、送受信装置、送信方法および受信方法 |
US6856604B2 (en) * | 2001-12-19 | 2005-02-15 | Qualcomm Incorporated | Efficient multi-cast broadcasting for packet data systems |
JP2003296288A (ja) | 2002-04-02 | 2003-10-17 | Sony Broadband Solution Corp | コンテンツ再配置管理装置、コンテンツを再配置する方法、そのプログラム並びにプログラム記録媒体 |
JP4000905B2 (ja) | 2002-05-22 | 2007-10-31 | ソニー株式会社 | 情報処理システムおよび方法、情報処理装置および方法、記録媒体、並びにプログラム |
US20040237120A1 (en) * | 2003-05-22 | 2004-11-25 | Lewin Blake P. | Systems and methods for dynamically generating and distributing synchronized enhancements to a broadcast signal |
WO2006107165A1 (en) | 2005-04-02 | 2006-10-12 | Samsung Electronics Co., Ltd. | File distribution method and apparatus in a mobile broadcast system |
US20070009436A1 (en) * | 2005-07-08 | 2007-01-11 | Rondinone Adam J | Radionuclide nanoparticles encased by inorganic shell having vector biomolecules attached thereto |
US20070094366A1 (en) * | 2005-10-20 | 2007-04-26 | Ayoub Ramy P | System and method for real-time processing and distribution of media content in a network of media devices |
JP4669422B2 (ja) | 2006-03-17 | 2011-04-13 | 財団法人エヌエイチケイエンジニアリングサービス | データ中継装置およびそのプログラム |
RU2354049C1 (ru) * | 2007-08-10 | 2009-04-27 | Общество С Ограниченной Ответственностью "Мералабс" | Способ передачи информации в объединенной системе связи и вещания и объединенная система связи и вещания |
US7945205B1 (en) * | 2007-10-05 | 2011-05-17 | At&T Mobility Ii Llc | System and method for optimization of network delivery of streaming data |
JP2009277111A (ja) * | 2008-05-16 | 2009-11-26 | Funai Electric Co Ltd | 情報処理装置 |
US8661155B2 (en) * | 2008-12-30 | 2014-02-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Service layer assisted change of multimedia stream access delivery |
US9069585B2 (en) * | 2009-03-02 | 2015-06-30 | Microsoft Corporation | Application tune manifests and tune state recovery |
WO2010101996A1 (en) * | 2009-03-03 | 2010-09-10 | Davenport Ronald R | A wired internet network system for the internet video streams of radio stations |
JP2011254410A (ja) * | 2010-06-04 | 2011-12-15 | Ntt Docomo Inc | 放送コンテンツ送信装置及び放送コンテンツ受信装置 |
-
2011
- 2011-01-12 JP JP2011003597A patent/JP6026078B2/ja active Active
-
2012
- 2012-01-05 KR KR1020137015737A patent/KR101924514B1/ko active IP Right Grant
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- 2012-01-05 MY MYPI2013002574A patent/MY163377A/en unknown
- 2012-01-05 SG SG2013052832A patent/SG191910A1/en unknown
- 2012-01-05 BR BR112013017426A patent/BR112013017426A2/pt not_active Application Discontinuation
- 2012-01-05 RU RU2013130744/08A patent/RU2598596C2/ru active
- 2012-01-05 CN CN201280004754.3A patent/CN103329561B/zh active Active
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- 2012-01-05 WO PCT/JP2012/050059 patent/WO2012096202A1/ja active Application Filing
-
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- 2014-11-14 US US14/541,411 patent/US10432696B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009117944A (ja) * | 2007-11-02 | 2009-05-28 | Brother Ind Ltd | ツリー型放送システム、再接続処理方法、ノード装置、ノード処理プログラム、サーバ装置、及びサーバ処理プログラム |
JP2010074360A (ja) * | 2008-09-17 | 2010-04-02 | Ntt Docomo Inc | 放送及び通信システム並びにパラメータ決定装置 |
Non-Patent Citations (3)
Title |
---|
See also references of EP2665260A4 * |
TANAKA ET AL.: "A Study on P2P Video Streaming with Transcoding", IEICE TECHNICAL REPORT, vol. 108, no. 458, March 2009 (2009-03-01), pages 405 - 410, XP008169060 * |
ZONG ET AL.: "P2P Streaming Protocol (PPSP) Requirements draft-ietf-ppsp-reqs-00", IETF INTERNET-DRAFT, 15 October 2010 (2010-10-15), XP055113506, Retrieved from the Internet <URL:http://tools.ietf.org/html/draft-ietf-ppsp-reqs-00> * |
Also Published As
Publication number | Publication date |
---|---|
CN103329561A (zh) | 2013-09-25 |
BR112013017426A2 (pt) | 2016-09-27 |
MY163377A (en) | 2017-09-15 |
JP2012147222A (ja) | 2012-08-02 |
RU2013130744A (ru) | 2015-01-10 |
KR20140003441A (ko) | 2014-01-09 |
CN103329561B (zh) | 2019-03-08 |
US10432696B2 (en) | 2019-10-01 |
US20150074242A1 (en) | 2015-03-12 |
EP2665260B1 (en) | 2020-09-02 |
US8910226B2 (en) | 2014-12-09 |
JP6026078B2 (ja) | 2016-11-16 |
RU2598596C2 (ru) | 2016-09-27 |
KR101924514B1 (ko) | 2018-12-04 |
SG191910A1 (en) | 2013-08-30 |
US20130305303A1 (en) | 2013-11-14 |
EP2665260A1 (en) | 2013-11-20 |
EP2665260A4 (en) | 2014-07-30 |
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