90年代，伴随着电子和通信产业的多媒体化浪潮，借助卫星及数字技术的有力推动，世界电视业也得以迅猛的发展，尤其是数字卫星电视所带来的多频道化的影响已日益深远。为适应由此引发的信息服务的革命性变革，欧美、日本等电视业发达国家纷纷投入大量的人力、物力、财力，用以 In the 1990s, along with the wave of multi-mediaization in the electronics and communications industries, the world television industry has also experienced rapid development with the help of satellite and digital technologies. In particular, the impact of multi-channeling brought by digital satellite television has become increasingly far-reaching. In order to adapt to the revolutionary changes in information services triggered by this, the developed countries in the television industry in Europe, the United States, Japan and other countries have invested a great deal of manpower, material resources and financial resources