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广播电视采用数字技术，可大大提高视频图像的质量，提高数字传输抗干扰能力和频道的利用率。本文总结了在成都有线数字电视系统实验中的一些经验，为我局今后开展数字电视广播打下了基础。试验表明：有线数字电视广播系统技术方案是可行的，现有ＨＦＣ网络已具备开展数字电视广播的技术条件
Radio and television using digital technology, can greatly improve the quality of video images, improve digital transmission anti-interference ability and channel utilization. This article summarizes some experiences in the experiment of cable digital TV system in Chengdu and lays the foundation for our bureau to launch digital television broadcasting in the future. The experiment shows that the technical scheme of the cable digital TV broadcasting system is feasible. The existing HFC network already has the technical conditions for carrying out digital television broadcasting