论文部分内容阅读
全国观众瞩目的中央电视台加密卫星电视频道(电影、体育、文艺和少儿、军事、农业、科技)已于95年11月底试播,通过有线电视进入了千家万户,这是电视工作者与广大观众值得庆贺的喜事。同时,也标志着我国电视事业的发展进入了一个新阶段。 实际上,早在94年,我国就通过通讯卫星开设了一个电影电视频道,全天24小时播放国内外最新的高质量电影故事片。可是,用户要想收看该频道节目,必须交费购买一个解码器(解调卡)加在电视机上才能正常收看。就像看电影只有买了门票,才能进入影院观看一样。原来该频道的电视信号是经过加密后发射的,即所谓“加密电视”。目前,国外许多国家全天24小时都能收看卫星电视节目,其中有些频道不能随意收看,用户必须预先交费。
CCTV’s satellite television channels (film, sports, arts and sciences and children’s, military, agriculture and science and technology), which have attracted the attention of the country’s audience, were piloted in late November of 1995 and reached millions of households through cable television. This is the reason why television workers and broad audiences Worth celebrating the wedding. At the same time, it also marks the development of China’s television industry has entered a new phase. In fact, as early as 1994, our country has opened a movie and television channel through communications satellites and broadcasts the latest high-quality feature films at home and abroad 24 hours a day. However, users want to watch the channel program, you must pay a decoder (demodulator card) added to the TV to watch. Just like watching movies only bought tickets to enter the theater to watch the same. The original television channel is encrypted after the launch of the so-called “encrypted television.” At present, many foreign countries can watch satellite television programs 24 hours a day, some of which can not be watched free, users have to pay in advance.