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概述ＣＡＴＶ（ＨＦＣ）网的特点与发展现状，讨论基于ＣＡＴＶ（ＨＦＣ）网下行信道数字视频传输的数宇压缩、ＭＰＥＧ－２传输、信道调制与网络接口以及多媒体网络等关键技术，介绍了数字视频广播与ＣＡＴＶ同有关的重要标准。
The characteristics and development status of CATV (HFC) network are summarized. The key technologies of digital video compression based on CATV (HFC) network downlink, MPEG-2 transmission, channel modulation and network interface and multimedia network are discussed. Radio and CATV with the relevant important criteria.