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5.1. 基本情况 全国有线电视网的建设始于80年代,目前全国有3亿多人可以看到有线电视,基本覆盖了所有城镇人口,是真正进入千家万户的网络。针对家庭的有线网有三大特点: ①用户规模大,居世界第一位(整个欧洲才4000万户); ②网络质量好,带宽为550MHz,有些达到了750MHz,能同时传送200多个频道的内容;
5.1. Basic Information The construction of the national cable television network started in the 1980s. At present, there are over 300 million people in the country who can see cable television and basically cover all the urban population. It is a network that has truly entered every household. There are three main characteristics of the cable network for the home: (1) The large-scale users occupy the first place in the world (only 40 million in Europe); (2) The network is of good quality with a bandwidth of 550MHz, some of which reach 750MHz and can transmit more than 200 channels simultaneously content;