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11.发明公开SYSTEM AND METHOD FOR BROADCAST OF INDEPENDENTLY ENCODED SIGNALS ON ATSC CHANNELS 审中-公开于广播独立的系统和方法的编码信号ON ATSC渠道
公开(公告)号：EP1421796A1
公开(公告)日：2004-05-26
申请号：EP02750184.0
申请日：2002-07-19
IPC分类号： H04N11/02
CPC分类号： H04N21/6437 , H04N5/4401 , H04N21/234318 , H04N21/2365 , H04N21/2381 , H04N21/242 , H04N21/6112
摘要： The ATSC standard for digital television broadcast specifies a data Channel in addition to the normal audio and video channels. A methodology is provided for using the ATSC data Channel to broadcast MPEG-4 video streams, for which a new video service is created. The MPEG-4 streams can be encapsulated into MPEG-2PES (Packetized Elementary Streams) packets or directly into MPEG-2 transport packets. These mechanisms enable the synchronous broadcast of MPEG-4 streams for an ATSC digital TV system without a change to the ATSC standard when data casting. In a system for transmission of video and audio information, in which the system is constrained to operate pursuant to a given standard, including application of a given coding methodology, transmission of the information using a coding methodology that is independent of the coding methodology is provided through encoding the information into a plurality of increments (310) encoded according to the independent coding methodology; and encapsulating the encoded information increments into a payload portion (324) of transmission packets established according to the given standard.
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