WO2013114939A1 - Dispositif et procédé de génération, dispositif et procédé de reproduction, structure de données, programme de commande, et support d'enregistrement - Google Patents

Dispositif et procédé de génération, dispositif et procédé de reproduction, structure de données, programme de commande, et support d'enregistrement Download PDF

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Publication number
WO2013114939A1
WO2013114939A1 PCT/JP2013/050520 JP2013050520W WO2013114939A1 WO 2013114939 A1 WO2013114939 A1 WO 2013114939A1 JP 2013050520 W JP2013050520 W JP 2013050520W WO 2013114939 A1 WO2013114939 A1 WO 2013114939A1
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WIPO (PCT)
Prior art keywords
unit
information
update
packet
reproduction
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PCT/JP2013/050520
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English (en)
Japanese (ja)
Inventor
徳毛　靖昭
渡部　秀一
琢也 岩波
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シャープ株式会社
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Publication of WO2013114939A1 publication Critical patent/WO2013114939A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64322—IP

Definitions

  • the present invention relates to a data structure or the like when transmitting content composed of a plurality of components via a network.
  • MPEG MMT MPEG Media Transport: MPEG media transmission protocol
  • MPEG ⁇ ⁇ ⁇ ⁇ ⁇ MMT are stored as a package (MMT Package), and in addition to a plurality of components (MMT Asset), composition information (Composition Information) indicating the playback conditions such as the layout of each component and the layout and combination availability : CI), and at least data related to transmission characteristic information (Transport Characteristics: TC) such as necessary bandwidth and allowable delay of each component for determining the optimum delivery route.
  • MMT Package a package
  • Composition Information Composition Information
  • CI the layout of each component and the layout and combination availability
  • TC Transmission Characteristics
  • FIG. 11A and 11B are diagrams illustrating a content transmission mode.
  • FIG. 11A illustrates an example of transmission by a single network
  • FIG. 11B illustrates an example of hybrid transmission by a plurality of networks.
  • one transmission packet is described as one block.
  • a transmission packet CI 1 of configuration information and a transmission packet TC 1 of transmission characteristic information are followed by a plurality of transmission packets (A 1,1 , A 2,1 , etc .
  • CI 2 another transmission packet of configuration information is included (CI 2 ), and a plurality of transmission packets (A 1, p , A 2, q ,...) Are included after this transmission packet. in the process of. Media unit contained in these transmission packets are reproduced based on the CI 2. That is, the configuration information to be referred to in the middle of one asset is changed from CI 1 to CI 2 .
  • all these transmission packets are distributed from the transmitter to the receiver through one network via one network.
  • the transmission packet of configuration information (CI 1 , CI 2 ,%) And the transmission packet (A 1,1 ,..., A 1 including the media unit constituting the first asset. , P , etc And transmission packets (A 2,1 ,..., A 2, q ,%) Including the media units that form the second asset are transmitted through different networks through different paths. Is done.
  • the hybrid transmission is also described in Patent Document 1 below.
  • JP 10-173612 A Japanese Patent Publication “JP 10-173612 A” (published June 26, 1998)
  • the receiver that has received the transmission packet as described above presents the component to the user based on the content of the configuration information (CI). For this reason, when the reception of the updated configuration information is delayed more than expected for some reason, the processing associated with the update of the configuration information is delayed, which may delay the start of component reproduction. In addition, an incorrect layout or combination may be displayed based on the configuration information before update.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a generation device and the like that can reduce the possibility of erroneous reproduction without reflecting the update of reproduction information. There is to do.
  • the generation apparatus of the present invention is one of a plurality of units generated by dividing the component by a predetermined division unit in order to transmit content composed of the plurality of components.
  • An update unit specifying means for indicating a playback mode of the component among the plurality of units, and specifying a unit in which playback information to be referred to at the time of playback is updated;
  • Packet generating means for generating a packet including a unit specified by the update unit specifying means and update information indicating the update of the reproduction information is provided.
  • the generation method of the present invention transmits a plurality of components to a plurality of units generated by dividing the component into predetermined division units.
  • a method for generating a packet by a generating device that generates a packet including one, showing a reproduction mode of the component among the plurality of units, and specifying a unit in which reproduction information to be referred to at the time of reproduction is updated
  • An update unit specifying step, a packet generating step for generating a packet including the unit specified in the update unit specifying step, and update information indicating the update of the reproduction information are included.
  • a unit in which the reproduction information to be referred to at the time of reproduction is updated is identified from among the plurality of units, and the packet including the identified unit and update information indicating the update of the reproduction information is included. Generate.
  • the update information can specify that the playback information to be referred to when the unit is played back has been updated from the previous one. That is, according to the above configuration, the reproduction information to be referred to when reproducing the unit included in the packet is updated in the reproduction apparatus that has received the packet including the unit to be reproduced with reference to the updated reproduction information. Can be recognized.
  • the playback apparatus can start preparation for updating the playback information after receiving the update information, playback based on the updated playback information can be smoothly started.
  • the playback information is information that should be referred to when the unit is played back, and may be any information that indicates the playback mode of the component. For example, it may indicate a component layout, may indicate whether a component can be combined with other components, or may indicate information indicating both of them.
  • the playback device of the present invention receives and plays back content composed of a plurality of components as a packet included as a unit obtained by dividing the component into predetermined units.
  • a detecting device for detecting that the received packet includes update information indicating a playback mode of the component and indicating an update of playback information to be referred to at the time of playback;
  • the unit includes reproduction means for reproducing the unit included in the packet according to the updated reproduction information.
  • the playback method of the present invention receives and plays back content composed of a plurality of components as a packet included as a unit obtained by dividing the component by a predetermined division unit.
  • a playback method by a playback device the detection step for detecting that the received packet includes update information indicating a playback mode of the component and indicating update of playback information to be referred to during playback, and And a reproduction step of reproducing the unit included in the packet according to the updated reproduction information when it is detected in the detection step that the update information is included in the packet.
  • the unit included in the packet is reproduced according to the updated reproduction information. There is no possibility of incorrect playback without being reflected.
  • the data structure of the present invention is a data structure of a packet for transmitting content composed of a plurality of components in order to solve the above problems, and the components are divided into predetermined division units.
  • the reproduction mode of the component is shown, and includes a unit in which reproduction information to be referred to at the time of reproduction is updated, and update information indicating the update of the reproduction information. .
  • the packet having the above data structure includes a unit in which the reproduction information is updated and update information indicating the update of the reproduction information. For this reason, the playback apparatus that has received the packet having this data structure can specify from the update information that the playback information to be referred to during playback of the unit has been updated from the previous one.
  • the playback device it is possible to reduce the possibility of erroneous playback without reflecting the update of the playback information.
  • the playback apparatus can start preparation for updating the playback information after receiving the update information, playback based on the updated playback information can be smoothly started.
  • the generation device and the playback device may be realized by a computer.
  • the generation device and the playback device are operated by causing the computer to operate as each unit of the generation device and the playback device.
  • a control program realized by a computer and a computer-readable recording medium on which the control program is recorded also fall within the scope of the present invention.
  • the generation apparatus includes the update unit specifying means for specifying the unit in which the reproduction information to be referred to at the time of playback is shown, indicating the playback mode of the component among the plurality of units, and the update unit.
  • Packet generating means for generating a packet including the unit specified by the specifying means and update information indicating the update of the reproduction information is provided.
  • the generation method of the present invention shows a component reproduction mode among a plurality of units, and an update unit specifying step for specifying a unit whose playback information to be referred to at the time of playback is updated;
  • This is a configuration including a packet generation step for generating a packet including the unit specified in the update unit specifying step and the update information indicating the update of the reproduction information.
  • the playback apparatus of the present invention detects that the received packet contains update information indicating the playback mode of the component and indicating the update of playback information to be referred to during playback. And means for reproducing the unit included in the packet according to the updated reproduction information when the detection means detects that the update information is included in the packet. It is the composition which is.
  • the playback method of the present invention detects that the received packet includes update information indicating the playback mode of the component and indicating the update of playback information to be referred to during playback. And a reproduction step of reproducing the unit included in the packet according to the updated reproduction information when it is detected in the detection step that the update information is included in the packet. It is.
  • the data structure of the present invention shows the reproduction mode of the component among a plurality of units generated by dividing the component by a predetermined division unit, and the reproduction information to be referred to at the time of reproduction is
  • the configuration includes an updated unit and update information indicating an update of the reproduction information.
  • the playback device it is possible to reduce the possibility of erroneous playback without reflecting the update of the playback information.
  • FIG. 1 is a block diagram showing a main configuration of a transmitter (generating device) 1 and a receiver (reproducing device) 2 that constitute a content transmitting / receiving system 3.
  • the content transmission / reception system 3 has a configuration in which a transmitter 1 and a receiver 2 are connected via a network.
  • the receiver 2 receives the content transmitted by the transmitter 1. And play it.
  • the transmitter 1 and the receiver 2 communicate directly, but the present invention is not limited to this.
  • the communication between the transmitter 1 and the receiver 2 may be relayed by a relay machine, or the content is distributed from the transmitter 1 to another distribution server, and the content is distributed from the distribution server to the receiver 2. Also good.
  • this network may be any network that allows the transmitter 1 and the receiver 2 to transmit and receive content. It is not limited to this.
  • a broadcast network may be applied as the network, or hybrid distribution using both the Internet and the broadcast network may be employed.
  • the transmitter 1 is a device for distributing content, and includes a transmitter control unit 10 that controls the functions of the transmitter 1 in an integrated manner, a transmitter storage unit 11 that stores data transmitted by the transmitter 1, and the transmitter 1. Includes a transmitter communication unit 12 for communicating with an external device.
  • the transmitter control unit 10 includes a content division unit 13, a header generation unit (packet generation unit) 14, and a CI update determination unit (update unit identification unit) 15, and the content 16 is stored in the transmitter storage unit 11. Has been.
  • the content dividing unit 13 divides the content 16 for distribution. Specifically, data for storing content components as, for example, media unit units is generated. Also, configuration information (Composition Information: CI, information for reproduction), transmission characteristic information (Transport Characteristics: TC), and the like are specified and extracted from the content 16. Details of the media unit, configuration information, and transmission characteristic information will be described later.
  • the header generation unit 14 generates a header to be added to the data generated by the content division unit 13. Specifically, the header generation unit 14 generates a payload format header (Payload Format Header) including at least information indicating the payload type (payload type), and uses this for each of the media unit, configuration information, and transmission characteristic information. Append to generate a payload. In addition, a transmission packet header (Transport ⁇ ⁇ ⁇ Packet (Header) is generated for each packet to be distributed, and this is added to the payload to generate a transmission packet.
  • a payload format header Payload Format Header
  • Transmission ⁇ ⁇ ⁇ Packet (Header) is generated for each packet to be distributed, and this is added to the payload to generate a transmission packet.
  • the CI update determination unit 15 determines whether or not the configuration information to be referred to when the media unit is reproduced from the configuration information to be referred to when the media unit distributed immediately before (the media unit to be reproduced immediately before) is reproduced. Judging. When it is determined that the header has been updated, the fact is notified to the header generation unit 14. The header generation unit 14 that has received this notification generates a header including update information indicating that the configuration information has been updated.
  • the update information is described in the header.
  • the receiver 2 can be surely recognized that the configuration information has been updated, and the media unit can be reproduced according to the intention on the transmitter 1 side.
  • Content 16 is content distributed by the transmitter 1. As described above, the content 16 is divided by the content dividing unit 13, the header is added to the header generating unit 14, and distributed as a transmission packet.
  • the receiver 2 is a device that receives and reproduces content, and includes a receiver control unit 20 that controls the functions of the receiver 2 in an integrated manner, and a receiver storage unit 21 that stores data received by the receiver 2.
  • the receiver 2 includes a receiver communication unit 22 for communicating with an external device, a display unit 23 for displaying an image, and an audio output unit 24 for outputting sound.
  • the receiver control unit 20 includes a header analysis unit (detection unit) 25, a decoder (preparation unit) 26, and a reproduction control unit (reproduction unit) 27.
  • the header analysis unit 25 analyzes the header of the received transmission packet and executes processing according to the analysis result. Specifically, when the header analysis unit 25 detects that the updated information is included in the analyzed header, the header analysis unit 25 notifies the decoder 26 that the configuration information is updated, and prepares to update the configuration information. Let it be done. In addition, when the analyzed header indicates that the analyzed header includes a media unit, the header analysis unit 25 transmits the payload to the decoder 26 for decoding. On the other hand, when the analyzed header indicates that the configuration information is included as a payload, the payload is transmitted to the reproduction control unit 27.
  • the decoder 26 decodes the media unit included in the received transmission packet.
  • the decoded data is output from the display unit 23 and the audio output unit 24 under the control of the reproduction control unit 27.
  • the decoder 26 performs a preparation process for updating the configuration information.
  • the reproduction control unit 27 reproduces the component according to the configuration information. Specifically, the playback control unit 27 causes the display unit 23 and the audio output unit 24 to output the media unit decoded by the decoder 26 according to the configuration information. Further, when the header analysis unit 25 detects the above update information, the reproduction control unit 27 reproduces the media unit included in the payload according to the updated configuration information.
  • FIG. 2 is a diagram illustrating an example of the data structure of the content 16.
  • the content 16 is stored in the transmitter storage unit 11 as a package including a header, configuration information (CI), transmission characteristic information (TC), and a plurality of assets (Asset).
  • CI configuration information
  • TC transmission characteristic information
  • Asset a plurality of assets
  • Assets are components such as video, audio and text, and are composed of a header and a plurality of media units (M-Unit: MU).
  • the media unit is a unit that is a unit for random access and time stamping, and is composed of a header and a plurality of media fragment units (Media Fragment Unit: MFU).
  • the configuration information indicates the playback mode of the component. Specifically, the configuration information indicates a layout such as a display position and a display size of each component, whether or not the components can be combined (whether or not simultaneous reproduction with other components), and the like. Each media unit is reproduced with reference to the configuration information.
  • Transmission characteristic information indicates the transmission characteristic of each component. Specifically, the transmission characteristic information indicates a necessary bandwidth and an allowable delay of each component for determining the optimum delivery route.
  • FIG. 3 is a diagram illustrating an example of the transmission format of the content 16.
  • the content 16 When the content 16 is transmitted by TCP / IP, UDP / IP, etc., it is in the form of a transmission packet (Transport packet) in which a header is added to the payload.
  • Transmission packet Transmission packet
  • the update information described above is described in the header of this payload.
  • the payload format for distributing the package of the content 16 is a format in which a header is added to each of the media unit (MU), configuration information (CI), and transmission characteristic information (TC) as shown in the figure.
  • one media unit is used as one payload, but the present invention is not limited to this.
  • the media unit may be further divided and transmitted as different payloads, or a plurality of media units may be transmitted together as one payload.
  • the payload format header describes a flag indicating whether or not the first media fragment unit constituting the media unit is included, a flag indicating whether or not the last media fragment unit constituting the media unit is included, and the like. It is good.
  • FIG. 4 is a diagram illustrating an example of a transmission packet including update information.
  • Each of these payloads corresponds to the i-th asset, A i, j ⁇ 1 contains the j ⁇ 1th media unit of this asset , and A i, j is the jth media unit of this asset. Is included.
  • the configuration information to be referred to when reproducing the media unit included in A i, j-1 is different from the configuration information to be referred to when reproducing the media unit included in A i, j .
  • update information indicating that the configuration information has been updated is described in its header.
  • a flag (composition_update_indicator) is described in the header of the payload to indicate whether or not the configuration information to be referred to when reproducing the media unit included in the payload has been updated from the immediately preceding payload.
  • the receiver 2 performs erroneous reproduction without reflecting the update of the configuration information. Can be reduced.
  • FIG. 5 is a diagram illustrating an example of updating the display layout of assets by updating the configuration information.
  • the asset 1 is displayed as a main component on the full screen, and the asset 2 is reduced as a sub component by half and displayed on the upper left of the screen.
  • This display layout is realized based on the configuration information (before update) shown in FIG.
  • the receiver 2 displays the full screen of the asset 1 and reduces the asset 2 to 1/2 as shown in the figure at the same time as the reproduction of the content including the assets 1 and 2 is started (from 0s). Display at the top left of the screen.
  • the receiver 2 displays the asset 2 as a main component on the full screen as shown in the display layout of FIG. indicate. In this way, the asset display layout can be changed by updating the configuration information.
  • the configuration information is updated for the media unit that has the earliest playback time among the media units that should be played based on the updated configuration information so that playback based on the updated configuration information is performed.
  • FIG. 6 is a diagram illustrating an example of changing the availability of asset combination display by updating the configuration information.
  • an area r1 (upper left area obtained by dividing the display screen into four parts in the vertical and horizontal directions) and an area r2 (upper right area obtained by dividing the display screen into four parts in the vertical and horizontal directions) are defined by the ⁇ layout> tag.
  • the ⁇ combi> tag associates asset 1 with region r1 and asset 2 with region r2.
  • the receiver 2 displays the asset 1 in the upper left area obtained by dividing the display screen into four as shown in the display layout of FIG. Is displayed in the upper right area.
  • the description of the ⁇ layout> tag is updated.
  • an ⁇ excl> tag that specifies mutual-exclusive display of assets is described instead of the ⁇ combi> tag.
  • the updated ⁇ layout> tag defines the area r0 (corresponding to full screen display).
  • the ⁇ excl> tag defines that either asset 1 can be displayed in area r0 or asset 2 can be displayed in area r0.
  • the receiver 2 displays the asset 1 as a main component on a full screen or the asset 2 as a main component on a full screen as shown in the display layout of FIG. In this way, by updating the configuration information, it is possible to change whether or not the asset combination display is possible.
  • the update information indicating that the configuration information has been updated is associated with the media unit to be played back based on the updated configuration information.
  • SMIL Synchronized Multimedia Integration Language
  • the configuration information only needs to indicate the display mode of the asset, and the description format is not particularly limited. .
  • FIG. 7 is a flowchart illustrating an example of a transmission packet generation process.
  • the timing for performing the transmission packet generation process is not particularly limited. For example, in on-demand distribution, when a content transmission request is received from the receiver 2, live distribution may be performed when the content is encoded.
  • the content dividing unit 13 reads the content 16 stored in the transmitter storage unit 11, and generates a payload (strictly, data stored in the payload portion of the transmission packet in FIG. 3). Specifically, the content dividing unit 13 acquires assets from the content 16 stored as a package as shown in FIG. 2, and divides the acquired assets to generate a plurality of payloads (S1). Then, the content division unit 13 outputs the plurality of payloads generated as described above to the header generation unit 14.
  • the unit for dividing the payload is not limited to the media unit.
  • the media unit further divided by a predetermined size may be used as the payload.
  • a plurality of media units may be combined into one payload.
  • the content dividing unit 13 also extracts configuration information (CI) and transmission characteristic information (TC) included in the package from the content 16 and outputs them to the header generation unit 14.
  • the header generation unit 14 instructs the CI update determination unit 15 to determine whether the configuration information of the media unit corresponding to the payload format generated in S2 is updated (S3, update unit specifying step).
  • the CI update determination unit 15 compares the time stamp of the media unit with the time when the configuration information described in the updated CI is changed (time 15m in the example of FIG. 5), thereby comparing the media unit. It is determined whether or not the configuration information has been updated.
  • the CI update determination unit 15 determines that the configuration information has been updated for a media unit described in the updated CI and having a time stamp corresponding to the change time of the configuration information. On the other hand, for media units other than those described above, it is determined that the configuration information has not been updated.
  • the configuration information has been updated based on the user input. That is, it is determined that the configuration information is updated for the media unit to be processed immediately after the above user input is performed.
  • the header generation unit 14 outputs the generated transmission packet to the transmitter communication unit 12 (S7), and the transmission packet generation process ends. Thereby, the transmission packet generated as described above is transmitted to the receiver 2 via the network.
  • FIG. 8 is a flowchart illustrating an example of the reproduction process. Note that FIG. 8 shows processing from reception to output for one transmission packet.
  • composition_update_indicator '1' (YES in S12)
  • the header analysis unit 25 notifies the decoder 26 that the configuration information is updated (S13).
  • the decoder 26 executes processing necessary for updating the configuration information (for example, initialization of the image enlargement / reduction module). Thereafter, the process proceeds to S14.
  • the media unit is decoded and output from the display unit 23 and / or the audio output unit 24 according to the configuration information under the control of the playback control unit 27 (playback step), and the playback process ends.
  • composition_update_indicator After confirming the value of composition_update_indicator, the media unit included in the header is played back, so the media unit to be played back is referred to the configuration information before the update by referring to the updated configuration information. To prevent playback.
  • the update of the configuration information is notified to the decoder 26 at the stage of analyzing the transmission packet header (S13), and the processing necessary for the update of the configuration information is executed. Can be prevented from being delayed.
  • FIG. 9 is a diagram illustrating an example of a structure (syntax) of a transmission packet header including a URL for acquiring configuration information.
  • a 14-bit value url_len indicating the URL length (byte length)
  • This URL (or URI) indicates the request destination of the updated configuration information. Note that these pieces of information relating to the URL may be described in S5 of FIG.
  • the configuration information may be acquired from the acquisition destination and updated.
  • FIG. 10 is a diagram illustrating an example of configuration information including a URL (acquisition destination information) for acquiring the latest configuration information.
  • a URL for acquiring the latest configuration information is described by a ⁇ location> tag.
  • the receiver 2 that has received this configuration information first reproduces the content based on this configuration information.
  • the transmitter control unit 10 of the transmitter 1 includes a packet including the acquisition source information as described above (for example, a transmission packet having the configuration information including the URL as a payload). It is only necessary to provide reproduction information acquisition packet generation means for generating Thereby, even when the receiver 2 cannot receive the updated configuration information for some reason, the configuration information can be updated by this URL.
  • the amount of data transmitted from the transmitter 1 is reduced by not generating and transmitting the transmission packet including the updated configuration information. You can also.
  • the subject of the process for updating the configuration information may be the transmitter 1 or another device.
  • the transmitter 1 performs both generation and distribution of transmission packets.
  • another apparatus may perform generation and distribution of transmission packets.
  • a plurality of devices may perform transmission packet generation and distribution, respectively.
  • a transmission packet for content for broadcast distribution may be generated in a certain device
  • a transmission packet for content for on-demand distribution (for example, for communication distribution) may be generated in another device.
  • a transmission packet including update information may be generated in either one device or another device.
  • each block of the transmitter 1 and the receiver 2, particularly the transmitter control unit 10 and the receiver control unit 20, can be realized in hardware by a logic circuit formed on an integrated circuit (IC chip). Alternatively, it may be realized by software using a CPU (Central Processing Unit).
  • IC chip integrated circuit
  • CPU Central Processing Unit
  • the transmitter 1 and the receiver 2 include a CPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, a RAM (Random Access Memory) that expands the program,
  • a storage device such as a memory for storing the program and various data is provided.
  • the object of the present invention is to record the program code (execution format program, intermediate code program, source program) of the control program of the transmitter 1 and the receiver 2, which is software that realizes the above-described functions, in a computer-readable manner. This can also be achieved by supplying the recording medium to the transmitter 1 and the receiver 2, and the computer (or CPU or MPU) reading and executing the program code recorded on the recording medium.
  • Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R.
  • IC cards including memory cards
  • semiconductor memories such as mask ROM / EPROM / EEPROM / flash ROM, PLD (Programmable logic device) and FPGA (Field Programmable Gate Array) Logic circuits can be used.
  • the transmitter 1 and the receiver 2 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network.
  • the communication network is not particularly limited as long as it can transmit the program code.
  • the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, and the like can be used.
  • the transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type.
  • the packet generation means of the present invention preferably includes acquisition information for acquiring the reproduction information to be referred to when reproducing the unit included in the packet in the packet including the update information.
  • the acquisition information for acquiring the reproduction information to be referred to when reproducing the unit included in the packet is included in the packet including the update information.
  • the playback device that has received this packet acquires the playback information using the acquisition information, even if the reception of the updated playback information is delayed, and refers to this playback information. Then, the unit can be reproduced.
  • the generation apparatus of the present invention includes a reproduction information acquisition packet generation unit that generates a packet including acquisition destination information indicating an acquisition destination of the updated reproduction information.
  • a packet including the acquisition destination information indicating the acquisition destination of the updated reproduction information is generated. Therefore, the playback apparatus that has received this packet can acquire the updated playback information by accessing the acquisition destination indicated by the acquisition destination information.
  • the playback device of the present invention is configured to play back the unit included in the packet according to the updated playback information. It is preferable that a preparation means for performing the preparation process is provided.
  • the reproduction based on the updated reproduction information can be smoothly started.
  • the present invention can be used for a transmitter that transmits content via a network and a receiver that receives content via a network.
  • Transmitter (Generator) 2 Receiver (Reproducing device) 14 Header generator (packet generator) 15 CI update determination unit (update unit specifying means) 16 Content 25 Header analysis unit (detection means) 26 Decoder (Preparation means) 27 Reproduction control unit (reproduction means)

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  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

La présente invention concerne un émetteur (1) qui est équipé : d'une unité de détermination de mise à jour de CI (15) permettant d'identifier une unité de support comportant des informations de composition (CI) mises à jour parmi de multiples unités de support; et une unité de génération d'en-tête (14) destinée à générer un paquet de transfert en ajoutant un en-tête, qui comprend un drapeau qui indique une mise à jour des informations de composition, à l'unité de support identifiée par l'unité de détermination de mise à jour de CI (15). Par conséquent, la possibilité de reproduction erronée par un dispositif de reproduction sans refléter la mise à jour des informations à reproduire est réduite.
PCT/JP2013/050520 2012-01-30 2013-01-15 Dispositif et procédé de génération, dispositif et procédé de reproduction, structure de données, programme de commande, et support d'enregistrement WO2013114939A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015149680A (ja) * 2014-02-07 2015-08-20 日本放送協会 送信装置及び受信装置
JP2017514345A (ja) * 2014-03-13 2017-06-01 ベランス・コーポレイション 埋め込みコードを用いた対話型コンテンツ取得
JP2018137790A (ja) * 2013-04-04 2018-08-30 日本放送協会 受信装置、送信装置、及び受信プログラム
US10445848B2 (en) 2014-08-20 2019-10-15 Verance Corporation Content management based on dither-like watermark embedding

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10750215B2 (en) 2015-07-27 2020-08-18 Lg Electronics Inc. Method and device for transmitting metadata in WFD
JP6913312B2 (ja) * 2018-02-28 2021-08-04 日本電信電話株式会社 データ処理装置及びデータ転送方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002262286A (ja) * 2001-03-02 2002-09-13 Canon Inc データ伝送方法、データ伝送装置、再生方法及び再生装置
US20110255558A1 (en) * 2010-04-20 2011-10-20 Samsung Electronics Co., Ltd. Interface apparatus and method for transmitting and receiving media data
US20120324521A1 (en) * 2011-06-14 2012-12-20 Samsung Electronics Co., Ltd. Method and apparatus for creating content in a broadcasting system
US20120320911A1 (en) * 2011-06-14 2012-12-20 University-Industry Cooperation Group Of Kyung Hee University Method and apparatus for transmitting data packet of multimedia service using media characteristics

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002262286A (ja) * 2001-03-02 2002-09-13 Canon Inc データ伝送方法、データ伝送装置、再生方法及び再生装置
US20110255558A1 (en) * 2010-04-20 2011-10-20 Samsung Electronics Co., Ltd. Interface apparatus and method for transmitting and receiving media data
US20120324521A1 (en) * 2011-06-14 2012-12-20 Samsung Electronics Co., Ltd. Method and apparatus for creating content in a broadcasting system
US20120320911A1 (en) * 2011-06-14 2012-12-20 University-Industry Cooperation Group Of Kyung Hee University Method and apparatus for transmitting data packet of multimedia service using media characteristics

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHUICHI AOKI: "Trends of Transport Mechanisms for Hybrid Delivery on Broadcast and Broadband", IPSJ SIG NOTES, 2011 (HEISEI 23) NENDO 3, vol. 2011-DPS, no. 5, 15 October 2011 (2011-10-15), pages 1 - 6 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018137790A (ja) * 2013-04-04 2018-08-30 日本放送協会 受信装置、送信装置、及び受信プログラム
JP2015149680A (ja) * 2014-02-07 2015-08-20 日本放送協会 送信装置及び受信装置
JP2017514345A (ja) * 2014-03-13 2017-06-01 ベランス・コーポレイション 埋め込みコードを用いた対話型コンテンツ取得
US10499120B2 (en) 2014-03-13 2019-12-03 Verance Corporation Interactive content acquisition using embedded codes
US10445848B2 (en) 2014-08-20 2019-10-15 Verance Corporation Content management based on dither-like watermark embedding

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