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概述经过信源编码和系统复接后生成的节目传送码流,通常需要通过某种传输媒介才能到达用户接收机。传输媒介可以是广播电视系统(如地面电视广播系统、卫星电视广播系统或有线电视广播系统),也可以是电信网络系统,或
Overview After source coding and system multiplexed generated program transmission code stream, usually through some kind of transmission medium to reach the user receiver. The transmission medium may be a broadcast television system (terrestrial television broadcasting system, satellite television broadcasting system or cable television broadcasting system) or a telecommunication network system or