Abstract:
실시간방송프로그램의기준영상과부가영상간의동기화방법은기준영상의시작시점을수신기에미리알려주기위한소정의식별자를포함하는적어도하나의프레임을생성하는단계와, 상기소정의식별자를포함하는적어도하나의프레임을수신측으로제공하는단계를포함한다. 또는, 실시간방송프로그램의기준영상과부가영상간의동기화방법은실시간방송프로그램의기준영상과연동되는부가영상을수신측에서미리준비하도록하기위하여송신측에서부가영상연동정보를포함하는시그널링정보를생성하는단계와, 상기시그널링정보를수신기로제공하는단계를포함한다. 따라서, 실시간방송프로그램의 3D 기준영상과수신기에저장된 3D 부가영상또는스트리밍되는 3D 부가영상간의동기화를정확하고효율적으로수행할수 있다.
Abstract:
The present invention relates to a non-real time stereoscopic video service method and an apparatus thereof. The non-real time stereoscopic video service method performed by a reception apparatus according to one embodiment of the present comprises the steps of: extracting a program association table from a received TS and analyzing the same; extracting a program map table corresponding to a program selected by a user from the program association table and analyzing the same; extracting a stereoscopic video service descriptor from the program map table and analyzing the same; generating frame and/or time information of an image to be reproduced according to the analysis of the stereoscopic video service descriptor; and reproducing an image by synchronizing a reference image and a supplementary image based on the generated frame and/or time information, wherein the step for generating the frame and/or time information of the image to be reproduced comprises: determining whether or not time stamp information regarding the image to be reproduced has been lost; and when it is determined that the time stamp information has been lost, generating the frame and/or time information based on time stamp information regarding a start of a stereoscopic video service included in the stereoscopic video service descriptor and information regarding access unit (AU) numbers of video images which have been transmitted so far after the stereoscopic video service was started. [Reference numerals] (AA) Start; (S210) Extract PAT from a Ts and analyze it; (S220) Extract PMT from the Ts and analyze it; (S230) Extract an SS-descriptor from the PMT and analyze it; (S240) Generate reproduction image frame/time information by using TimeStamp and/or FirstAUTimeStamp, LastAUNumber Tag; (S250) Reproduce a reference image and a supplementary image
Abstract:
PURPOSE: A transmission device for providing a stereoscopic broadcasting service of a program linkage type and a method and a reception device and a method thereof are provided to enable a reference picture to use a 2DTV system, and to deliver an additional picture based on an advanced television systems committee and a network resource table transmission mechanism in non real time, thereby overcoming a limit of a 3D band width and supplying compatibility with a existing 2D broadcasting system. CONSTITUTION: A real time stream encoder(210) generates a real time stream by encoding a reference picture. A non real time stream encoder(230) generates a non real time stream based on an additional picture. A picture synchronization information generator(220) generates a picture synchronization information stream and service signaling for synchronization of the reference picture and the additional picture. A re-multiplexer(240) generates a stereoscopic broadcasting stream of a program linkage type. [Reference numerals] (201) Standard image; (203) Additional image; (205) Transmitting server; (210) Real time stream encoder; (220) Service signaling and image synchronization information generator; (222) 3D contents synchronization information; (234) NRT signaling information encoder; (236) NRT contents encoder; (240) Re-multiplexer; (AA) Real time stream; (BB) Service signaling and image synchronization information; (CC) NRT signaling information; (DD) Non real time stream; (EE) Non real time stream encoder; (FF) Non real time contents managing unit; (GG) Program linkage type stereoscopic broadcasting stream
Abstract:
PURPOSE: A method for synchronizing between additional images and reference images of a real-time broadcasting program and a device thereof are provided to perform a signaling operation for synchronization time information with a stream transmitted in real time, thereby providing steadily a stereoscopic picture service. CONSTITUTION: A program map table corresponding to a program selected is extracted(S410). Information defined by a program level descriptor and an elementary stream level descriptor is extracted(S415). Whether a file of a related additional picture stores in a memory is checked(S420). The additional picture is loaded from the memory(S425). Timing difference necessary for synchronization of between a reference picture and the additional picture(S430). [Reference numerals] (AA) Image transmitting device; (BB) Image receiving device; (S400) Generating stream to be transferred; (S405) Transferring the stream; (S410) Extracting PMT; (S415) Extracting information; (S420) Checking an additional image file stored in a memory; (S425) Loading the additional image; (S430) Calculating Δt; (S435) Synchronizing frames between a standard image and the additional image; (S440) Providing a stereoscopic image
Abstract:
PURPOSE: A method for transmitting and receiving a 3D broadcasting service are provided to supply the 3D broadcasting service in real time or non-real time and secure the compatibility with a 2D broadcasting of a digital broadcasting. CONSTITUTION: A reference image stream and an additional image stream are generated(900). Signaling information is generated(910). Information about the generated components is inputted into the signaling information. One or more among the signaling information, the reference image stream, and the 3D additional image stream are multiplexed through different channels(920). The multiplexed result is transmitted to the reception terminal through a distribution network(930).