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就一般意义上来讲,广播电视节目主要依靠三种传送方式进入千家万户:地面无线电视广播、有线电视广播和卫星电视广播。回顾我国电视事业发展50年的历程,初期电视信号只是通过地面无线电视传送入户。20世纪70年代有线电视技术的兴起,促进了我国电视传输技术的大发展。到80年代上半期,卫星传送技术的应用,带动了我国电视覆盖面的扩大和电视的普及。目前,无线、有线、卫星三种传输方式互为补充,仍是电视节目传输的主要方
In the general sense, radio and television programs rely on three modes of delivery to reach every single family: terrestrial, terrestrial, cablecast and satellite television. Recalling the development of China’s television industry 50 years of history, the initial TV signal is transmitted through terrestrial wireless television households. The rise of CATV technology in the 1970s promoted the great development of TV transmission technology in our country. By the first half of the 1980s, the application of satellite transmission technology drove the expansion of television coverage and the popularization of television in our country. At present, wireless, cable, satellite three kinds of transmission complement each other, is still the main television program transmission