ITU-T H.230-2009
视听系统的帧同步控制和指示信号

Frame-synchronous control and indication signals for audiovisual systems (Study Group 16)

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标准号

ITU-T H.230-2009

发布

2009年

发布单位

国际电信联盟

 

 

引用标准

ISO 639-1:2002 ISO/IEC 10646:2003 ITU-T H.245-2005 ITU-T H.320-2004 ITU-T H.323-2003

适用范围

Digital audiovisual services are provided by a transmission system in which the relevant signals are multiplexed onto a digital path using the frame structure defined in Recommendation ITU-T H.221.In addition to the audio,video,user data and telematic information, these signals include information for the proper functioning of the system.The additional information has been named control andindication (C&I) to reflect the fact that while some bits are genuinely for "control",causing a state change somewhere else in the system, others provide for indications to the users as to the functioning of the system.Recommendation ITU-T H.230 concerns only those C&I which must be transmission frame-synchronous,or otherwise requiring rapid response.

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