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WO2010027142A2 - Système et procédé de transmission/réception pour vidéo multivision - Google Patents

Système et procédé de transmission/réception pour vidéo multivision Download PDF

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Publication number
WO2010027142A2
WO2010027142A2 PCT/KR2009/003190 KR2009003190W WO2010027142A2 WO 2010027142 A2 WO2010027142 A2 WO 2010027142A2 KR 2009003190 W KR2009003190 W KR 2009003190W WO 2010027142 A2 WO2010027142 A2 WO 2010027142A2
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WO
WIPO (PCT)
Prior art keywords
video
bitstream
view
enhancement layer
communication terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2009/003190
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English (en)
Korean (ko)
Other versions
WO2010027142A3 (fr
Inventor
배태면
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SK Telecom Co Ltd
Original Assignee
SK Telecom Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SK Telecom Co Ltd filed Critical SK Telecom Co Ltd
Publication of WO2010027142A2 publication Critical patent/WO2010027142A2/fr
Publication of WO2010027142A3 publication Critical patent/WO2010027142A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/21805—Source of audio or video content, e.g. local disk arrays enabling multiple viewpoints, e.g. using a plurality of cameras
    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal

Definitions

  • the present invention relates to a system and method for transmitting and receiving a multiview video, and more particularly, a basic video is encoded into a base layer from a video photographed by a plurality of photographing means, and provided to a communication terminal through a broadcasting network.
  • the present invention relates to a multi-view video transmission / reception system and method for encoding an enhancement layer bitstream using encoding information of the base layer and providing the same to a communication terminal through a communication network.
  • the basic principle of compressing data is to eliminate spatial and temporal redundancy of the data.
  • Spatial redundancy is the repetition of the same color or object in a video.
  • temporal duplication means that the adjacent picture is almost unchanged in the moving picture or the same sound is repeatedly repeated in the audio.
  • temporal redundancy is eliminated by temporal filtering based on motion compensation and spatial redundancy is removed by spatial transform.
  • a transmission medium is required to transmit multimedia data generated after data duplication is removed.
  • the performance varies depending on the transmission medium.
  • scalable video coding technology is available.
  • Scalable video coding technology cuts a portion of a bit stream according to surrounding conditions such as transmission bit rate, transmission error rate, and system resources, and adjusts the resolution, frame rate, and signal to noise ratio (SNR) of the already compressed bitstream.
  • SNR signal to noise ratio
  • a temporal scalability is realized by constructing a motion prediction image with a hierarchical structure of a frame temporally, and spatially scalable coding is performed through layered coding in which layers are separately encoded according to each resolution.
  • image quality image quality scalability is implemented by using layered coding or fine grain scalability.
  • Multi-view video compression is for simultaneously compressing, storing, and transmitting video input from multiple cameras.
  • the size of the data is very large. Therefore, a large transmission bandwidth is required to transmit data to a user through a broadcasting network or a wired / wireless internet in real time.
  • multi-view video coding and decoding may be performed by independently coding and transmitting each video sequence and then decoding the video sequence. This can be easily implemented through existing MPEG-1 / 2/4 or H.261 / 263/264.
  • the conventional technology as described above has a disadvantage in that it is not possible to remove redundancy between videos caused by photographing the same object with a plurality of cameras.
  • the conventional technology as described above has a disadvantage in that it is not possible to remove redundancy between videos caused by photographing the same object with a plurality of cameras.
  • the broadcast network there was a disadvantage that you can not watch the video at different views.
  • a method of multiplexing a bitstream that can be independently decoded and a bitstream that is independently decoded and transmitted through a broadcasting network or a network is generally known.
  • An object of the present invention for solving the above-mentioned problems of the prior art is to transmit the additional video information through the communication network to watch the video at the desired time when the user wants to watch the video at a different time while watching the video through the broadcasting network.
  • Another object of the present invention is to provide a multi-view video transmission / reception system and method for compressing a base video into a base layer and compressing a video of another view into an enhancement layer.
  • Another object of the present invention is to provide a multi-view video transmission / reception system and method for providing a bitstream encoded in a base layer through a broadcasting network and providing a bitstream encoded in an enhancement layer through a communication network.
  • Another object of the present invention is to provide a multi-view video transmission / reception system and method for removing and encoding redundancy as an enhancement layer for a video at another point in time except for a basic video.
  • a communication terminal which transmits a message to a multi-view video transmission system, receives an enhancement layer bitstream at a corresponding time point, and decodes the enhancement layer bitstream using decoding information of the base layer;
  • a base video is encoded into a base layer among videos taken by a plurality of photographing means and provided to the communication terminal through a broadcasting network, and a video is encoded into an enhancement layer bitstream using encoding information of the base layer for a video of another viewpoint.
  • a multi-view video transmission / reception system including a multi-view video transmission system provided to the communication terminal is provided.
  • the communication terminal converts the video through the broadcasting network into the video through the communication network when the video is received through the communication network.
  • the communication terminal outputs a video through a broadcast network and a video through a communication network as a PIP or POP.
  • a base video is encoded into a base layer among multiview videos captured by a plurality of photographing means, and encoding information of the base layer is encoded for a video of another viewpoint.
  • a multiview video encoding apparatus encoding the enhancement layer bitstream using an encoding layer;
  • a broadcast server providing a basic video coded by the multi-view video encoding apparatus to a communication terminal through a broadcast network;
  • a multiview including a streaming server that selects a bitstream of a corresponding view from among bitstreams of an enhancement layer encoded by the multiview video encoding apparatus and provides the bitstream at a corresponding time to the communication terminal.
  • the video request message includes viewpoint information selected by the communication terminal user.
  • the bitstream of each enhancement layer encoded by the multiview video encoding apparatus includes view information.
  • the multi-view video encoding apparatus compresses each view in a two-layer structure of MPEG-2 MVP in the case of MPEG-2, and compresses each view in a two-layer structure of SVC in the case of H.264.
  • a multiview video encoding apparatus comprising: a base layer encoder configured to encode a base video into a base layer from a multiview video photographed by a plurality of photographing means; A multi-view video encoding apparatus including a plurality of enhancement layer encoders encoding a bitstream of an enhancement layer by using encoding information of a base layer encoded by the base layer encoder for a video of another viewpoint is provided.
  • the enhancement layer encoder encodes the video of the base layer by removing redundancy of the video of the base layer.
  • the enhancement layer encoder sets view information in the bitstream of each encoded enhancement layer.
  • a video request message including viewpoint information is received from a communication unit for communication with a communication terminal through a communication network, and the communication terminal through the communication unit, the video request message is analyzed and the corresponding time point is analyzed.
  • a streaming server including a time determination unit for determining a switching unit for selecting the enhancement layer bitstream corresponding to the time determined by the time determination unit to be provided to the communication terminal.
  • the streaming server further includes a storage unit for receiving and storing a plurality of enhancement layer bitstreams from a multiview video encoding apparatus.
  • the switching unit extracts a corresponding enhancement layer bitstream from a storage unit or a multi-view video encoding apparatus and provides the same to the communication terminal.
  • a communication terminal including a communication unit, an input unit, and an output unit for outputting a multi-view video using a broadcasting network and a communication network, which decodes and outputs a bitstream of a base layer received through the broadcasting network.
  • a decoder which decodes the bitstream of the enhancement layer by using the decoding information of the base layer when the bitstream of the enhancement layer is received through the communication network;
  • a communication terminal including a service request unit generating a video request message including corresponding point information and transmitting the same to the multi-view video transmission system through the communication unit is provided.
  • the decoding unit may include: a base layer decoding unit decoding a bitstream of a base layer received through the broadcasting network, and an enhancement of decoding a bitstream of an enhancement layer received through the communication network using information decoded by the base layer decoding unit. It includes a layer decoding unit.
  • a multi-view video encoding apparatus encodes a basic video as a basic layer among videos captured by a plurality of photographing means, and encodes a video of another viewpoint using encoding information of the base layer.
  • B providing a bitstream of a base layer encoded by the multi-view video encoding apparatus to a communication terminal through a broadcasting network, and (c) in the communication terminal, encoding the enhancement layer bisstream.
  • a video request message including corresponding view information to a streaming server when a video output of another view through a communication network is requested while decoding and outputting a base layer bitstream from a server,
  • Enhancement layer at that time in response to video requests from communication terminals Selecting and providing a bitstream to the communication terminal through a communication network;
  • step (a) the multi-view video encoding apparatus provides a bitstream encoded with a base layer to the broadcast server, and provides a bisstream encoded with an enhancement layer to the streaming server.
  • the enhancement layer bitstream encoded in step (a) includes view information.
  • a method of encoding a multiview video by a multiview video encoding apparatus comprising: encoding a basic video from a multiview video photographed by a plurality of photographing means into a base layer bitstream;
  • a multi-view video encoding method is provided, which comprises encoding a video stream of another view by using the encoding information of the base layer bitstream into a bitstream of an enhancement layer.
  • the method comprises: receiving and storing a plurality of enhancement layer bisstreams from a multiview video encoding apparatus; When the video request message including the view information is received from the communication terminal, determining the corresponding view by analyzing the video request message; A method for transmitting a multi-view video through a communication network is provided, the method including selecting an enhancement layer bitstream corresponding to the determined time point from the stored enhancement layer bitstream and transmitting the selected enhancement layer bitstream to the communication terminal.
  • a video output of another point in time through the communication network is requested while decoding and outputting the bitstream of the base layer received through the broadcast network, a video request message including the view information is provided.
  • a video request message including the view information is provided.
  • the bitstream of the enhancement layer corresponding to the request time point is received from the multiview video transmission system, decoding information of the base layer bitstream from the bitstream of the enhancement layer.
  • Step (a) may include: decoding and outputting a bitstream of a base layer received through a broadcasting network; Determining a corresponding point in time when a video output of another point in time is requested by the user; Generating a video request message including the determined time point and transmitting the multi-view video transmission system.
  • a multi-view video encoding method can be recorded as a program on a computer-readable medium such as a CD or a USB memory.
  • a multi-view video of which a user can watch a video at a desired point of view by transmitting additional video information through a communication network. It is possible to provide a transmission and reception system and a method.
  • a multi-view video transmission / reception system and method may be provided for removing and encoding redundancy as an enhancement layer for a video at a view point other than the basic video.
  • FIG. 1 is a diagram illustrating a system for transmitting and receiving multiview video according to the present invention.
  • FIG. 2 is a block diagram schematically illustrating a configuration of a multi-view video encoding apparatus according to the present invention.
  • Figure 3 is a block diagram schematically showing the configuration of a streaming server according to the present invention.
  • FIG. 4 is a block diagram schematically illustrating a configuration of a communication terminal for outputting a multiview video using a broadcasting network and a communication network according to the present invention.
  • FIG. 5 is a flowchart illustrating a method of encoding a multiview video by a multiview video encoding apparatus according to the present invention.
  • FIG. 6 is a flowchart illustrating a method for providing a multi-view video to a communication terminal according to the present invention.
  • FIG. 7 is a flowchart illustrating a method for providing an enhancement layer bitstream to a communication terminal by a streaming server according to the present invention.
  • FIG. 1 is a diagram illustrating a system for transmitting and receiving multiview video according to the present invention.
  • a multi-view video transmission / reception system receives a video through a broadcasting network and a communication network, and outputs a video to a request of the communication terminal 200 by encoding a video photographed by a plurality of photographing means. Accordingly, the multi-view video transmission system 100 provides a corresponding video to the communication terminal 200 through a broadcasting network or a communication network.
  • the communication terminal 200 re-views the video request message including the corresponding view information when the video output of another view through the communication network is requested while decoding and outputting the video of the base layer received through the broadcasting network.
  • the video signal is transmitted to the video transmission system 100 to receive an enhancement layer bitstream at a corresponding time point, and to decode and output the enhancement layer bitstream using decoding information of the base layer.
  • the communication terminal 200 includes a mobile communication terminal, a wired communication terminal, and the like, capable of receiving a video through a broadcasting network and a communication network.
  • the communication terminal 200 converts the currently output video into a video through the communication network and outputs the video.
  • the communication terminal 200 may output the video through the broadcasting network and the video through the communication network as PIP or POP.
  • the multi-view video transmission system 100 encodes a basic video into a base layer from a video photographed by a plurality of photographing means and provides it to the communication terminal 200 through a broadcasting network.
  • the multi-view video transmission system 100 encodes a video of another view into an enhancement layer bitstream using encoding information of the base layer, and when a video request message is received from the communication terminal 200, The bitstream is provided to the communication terminal 200 through a communication network.
  • the multiview video transmission system 100 includes a multiview video encoding apparatus 120, a broadcast server 150, and a streaming server 170.
  • the multi-view video encoding apparatus 120 encodes the base video from the multi-view video captured by the plurality of photographing means into a base layer, and encodes the base video into an enhancement layer bitstream using encoding information of the base layer with respect to the video from another viewpoint. do.
  • the broadcast server 150 provides a basic video coded by the multi-view video encoding apparatus 120 to the communication terminal 200 through a broadcast network.
  • the streaming server 170 selects a bitstream of the corresponding view from among bitstreams of the enhancement layer encoded by the multiview video encoding apparatus 120 to communicate with the communication terminal. Provided at 200.
  • the video request message includes viewpoint information selected by the user of the communication terminal.
  • the multi-view video transmission system 100 receives the view request information when the video request message is received from the communication terminal 200.
  • a bitstream of an enhancement layer may be selected and provided.
  • the multi-view video encoding apparatus 120 compresses each viewpoint by using a two-layer structure of MPEG-2 MVP in the case of MPEG-2, and compresses each viewpoint by using a two-layer structure of SVC in the case of H.264. do.
  • the broadcast server 150 corresponds to a current digital terrestrial broadcast, satellite digital broadcast, T-DMB, and S-DMB transmission system, and transmits a base layer of a video encoded by the multiview video encoding apparatus 120.
  • the streaming server 170 receives information on a time point desired by a user from the communication terminal 200 through a communication network and performs streaming of an enhancement layer bitstream corresponding to the IP layer.
  • a multi-view video is compressed using a block-based codec of a hierarchical encoder structure.
  • the base layer can be decoded by the codec of the broadcast network, and the video of the other time is compressed by using a layer-based multi-view video compression method that compresses by reducing the redundancy between the images using the information of the base layer.
  • a user having only a broadcast receiving device watches a video of a base layer, and a user connected to an additional communication network selects a desired time point and requests the streaming server 170 from the streaming server 170 to meet the request time. Additional bitstreams can be received and viewed.
  • FIG. 2 is a block diagram schematically illustrating a configuration of a multiview video encoding apparatus according to the present invention.
  • the multiview video encoding apparatus 120 may include a base layer encoder 122 that encodes a base video as a base layer among multiview videos photographed by a plurality of photographing means, and at different viewpoints.
  • a plurality of enhancement layer encoders 124a, 124b,..., 124n, 124, which are encoded into a beast stream of an enhancement layer by using encoding information of the base layer encoded by the base layer encoder 122 for a video, are hereinafter referred to as 124. ).
  • the base layer encoder 122 encodes the basic video using a codec compatible with an existing broadcasting system such as H.264 or MPEG-2.
  • the enhancement layer encoder 124 encodes the view point 1 to output the first enhancement layer bitstream, and the second enhancement layer encodes the view point 2 to output the second enhancement layer bitstream. And an enhancement layer encoder 124b.
  • the enhancement layer encoder 124 sets view information in the bitstream of each encoded enhancement layer.
  • the viewpoint information set as described above may select an enhancement layer bitstream of the viewpoint information when a video request message is received from the communication terminal.
  • the enhancement layer encoder 124 Since the enhancement layer encoder 124 performs encoding by using the encoding information of the base layer encoded by the base layer encoder 122, the enhancement layer encoder 124 removes redundancy of the video of the base layer from the video of another viewpoint.
  • the enhancement layer encoder 124 compresses each view in a two-layer structure of MPEG-2 MVP in the case of MPEG-2, and compresses each view in a two-layer structure of SVC in the case of H.264. .
  • FIG. 3 is a block diagram schematically showing the configuration of a streaming server according to the present invention.
  • the streaming server 170 requests a video when a video request message including viewpoint information is received from a communication terminal 172 and a communication terminal 172 for communication with a communication terminal through a communication network.
  • a switching unit 176 for selecting a enhancement layer bitstream corresponding to the viewpoint determined by the viewpoint determination unit 174 by analyzing the message and determining the corresponding viewpoint. .
  • the streaming server 170 may further include a storage unit 178 that receives and stores the plurality of enhancement layer bitstreams from the multiview video encoding apparatus.
  • the switching unit 176 extracts an enhancement layer bitstream corresponding to the viewpoint determined by the viewpoint determination unit 174 from the storage unit 178 or the multiview video encoding apparatus 120 and provides the extracted communication layer 200 to the communication terminal 200. Play a role.
  • FIG. 4 is a block diagram schematically illustrating a configuration of a communication terminal for outputting a multi-view video using a broadcasting network and a communication network according to the present invention.
  • a communication terminal 200 for outputting a multiview video using a broadcasting network and a communication network includes a communication unit 202, an input unit 204, a storage unit 206, an output unit 208, and a decoding unit 210. ), The service request unit 214.
  • the decoding unit 210 decodes the encoded bitstream.
  • the decoding unit 210 bases the bitstream of the enhancement layer. Decode using the decoding information of the layer.
  • the decoding unit 210 may decode the base layer decoding unit 211 for decoding the bitstream of the base layer received through the broadcasting network, and decode the bitstream of the enhancement layer received through the communication network in the base layer decoding unit 211.
  • an enhancement layer decoding unit 212 that decodes the received information.
  • the service requesting unit 214 When a video of another point in time is requested through the input unit 204, the service requesting unit 214 generates a video request message including corresponding point information and transmits it to the multi-view video transmission system through the communication unit 202.
  • the video requested by the service requester 214 is received through the communication unit 202, decoded by the decoding unit 210, and output to the output unit 208.
  • FIG. 5 is a flowchart illustrating a method of encoding a multiview video by a multiview video encoding apparatus according to the present invention.
  • the multiview video encoding apparatus 120 when the multiview video encoding apparatus 120 receives a multiview video photographed by a plurality of photographing means (S500), the multiview video encoding apparatus 120 encodes the base video into a base layer bitstream from the received multiview video ( S502).
  • the multi-view video encoding apparatus 120 encodes the video of the other view into the bitstream of the enhancement layer by using encoding information of the base layer bitstream (S504).
  • the base layer bitstream is provided to the communication terminal through the broadcast network, and the enhancement layer bitstream is provided to the communication terminal through the communication network.
  • FIG. 6 is a flowchart illustrating a method of providing a multi-view video to a communication terminal according to the present invention.
  • the broadcast server 150 provides a bitstream of a base layer encoded by the multiview video encoding apparatus 120 to the communication terminal 200 through a broadcast network (S600).
  • the multi-view video encoding apparatus 120 provides a bitstream encoded with a base layer to the broadcast server 150 and provides a bisstream encoded with an enhancement layer to the streaming server 170.
  • the communication terminal 200 decodes and outputs a base layer bitstream from the broadcast server 150 (S602).
  • the communication terminal 200 When outputting a video at another point in time through the communication network while outputting a video through the broadcasting network (S604), the communication terminal 200 transmits a video request message including the corresponding view information to the streaming server 170 (S606). .
  • the communication terminal 200 receives a video request message including view information selected by the user. It generates and transmits to the streaming server 170.
  • the streaming server 170 When the streaming server 170 receives the video request message from the communication terminal 200 (S608), the streaming server 170 selects an enhancement layer bitstream at the corresponding point in time according to the video request and provides it to the communication terminal 200 through the communication network (S610). .
  • the streaming server 170 analyzes the video request message, extracts view information, and selects an enhancement layer bitstream corresponding to the extracted view information through a communication network. Provided to the communication terminal 200.
  • the communication terminal 200 decodes and outputs the enhancement layer bitstream transmitted from the streaming server 170 using the decoding information of the base layer (S612).
  • FIG. 7 is a flowchart illustrating a method for providing an enhancement layer bitstream to a communication terminal by a streaming server according to the present invention.
  • the streaming server 170 receives and stores a plurality of enhancement layer bisstreams from the multiview video encoding apparatus 120 (S700).
  • the streaming server 170 receives the video request message including the viewpoint information from the communication terminal 200 (S702), the streaming server 170 analyzes the video request message to determine the corresponding viewpoint (S704).
  • the streaming server 170 selects the enhancement layer bitstream corresponding to the determined time point from the stored enhancement layer bitstream as described above and transmits it to the communication terminal 200 (S706).
  • the system and method for transmitting and receiving a multi-view video transmits additional video information through a communication network so that a user can watch a video at a desired time point while watching a video through a broadcasting network. It can be used for the technique.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

L'invention concerne un système et un procédé de transmission/réception pour vidéo multivision. Le système selon l'invention comprend un terminal de communication et un système de transmission en vidéo multivision. Le terminal transmet un message de demande vidéo qui contient une information de période pertinente à destination du système de transmission en vidéo multivision et reçoit un flux binaire en couche amélioré de la période pertinente, lorsqu'une présentation de sortie vidéo pour une autre période est demandée via un réseau de communication tandis que la vidéo de la couche de base reçue via un réseau de diffusion est décodée et présentée en sortie. Le système de transmission en vidéo multivision code la vidéo de base parmi les éléments vidéo pris par plusieurs moyens photographiques dans une couche de base, fournit la vidéo de base au terminal de communication via le réseau de diffusion, code la vidéo d'une autre période dans le flux binaire de couche amélioré en utilisant l'information de codage de la couche de base, et sélectionne le flux binaire de couche amélioré de la période pertinente puis fournit le flux binaire sélectionné au terminal de communication via le réseau de communication lorsque le message de demande vidéo est reçu depuis le terminal de communication. Selon l'invention, on peut ainsi transmettre une information vidéo additionnelle via un réseau de communication pour permettre à un utilisateur de visualiser la vidéo de la période souhaitée par lui, dans l'éventualité où l'utilisateur souhaite visualiser la vidéo d'une autre période via un réseau de diffusion.
PCT/KR2009/003190 2008-09-05 2009-06-15 Système et procédé de transmission/réception pour vidéo multivision Ceased WO2010027142A2 (fr)

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KR1020080087620A KR101012760B1 (ko) 2008-09-05 2008-09-05 다시점 비디오의 송수신 시스템 및 방법
KR10-2008-0087620 2008-09-05

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WO2010027142A2 true WO2010027142A2 (fr) 2010-03-11
WO2010027142A3 WO2010027142A3 (fr) 2010-04-29

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