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1.引言早在1973年,西德就着手研究模拟彩色电视分量信号和时分复用(TDM)传输方法,到1976年,公开发表Timeplex(时间复用)传输方式。该方式可与通行的5MHz电视信道配合,供地面网节目分配。 1980年以后英国IBA(独立广播公司)又为直播卫星信道提出8.4MHz带宽的时分复用模拟分量(MAC)的电视传输方式,并被收录于CCIR建议书。 1981～1982年期间,美国Ampex公司及日本Sony公司先后发表了ARC及BVW系列的摄录一体化机种,均采用时间压缩与时分
1. Introduction As early as 1973, West Germany started to study the analog color television component signal and time-division multiplexing (TDM) transmission method. By 1976, it published the Timeplex transmission method. This approach can be used with the prevailing 5MHz TV channel for distribution of terrestrial network programs. After 1980, British IBA (Independent Broadcasters) proposed time-multiplexed analog component (MAC) television transmission of 8.4MHz bandwidth for direct broadcast satellite channels and was included in the CCIR Recommendation. From 1981 to 1982, the United States Ampex Corporation and Japan’s Sony Corporation has published a series of ARC and BVW camcorder models are used time compression and time-division