付费电视在发达的国家早已普及,它是以电视加解扰收费系统为基础,通过一种加密方式将电视信号加密,而每个电视用户可利用解扰器将已加密的电视信号解密后,才能正常收看。香港卫星电视中文台“电影频道”94年5月1日的加扰播出,对我国观众认识和了解付费电视这一事物,产生了积极的作用。中央卫星电视 Pay TV has long been popular in developed countries. It is based on the television and descramble charging system and encrypts the television signal by an encryption method. Each television user can decrypt the encrypted television signal by using a descrambler, Can watch normally. The broadcast on May 1, 1994, of the “Chinese Channel” of the Chinese channel “Hong Kong Satellite TV” has had a positive effect on the audience’s understanding and understanding of pay television in our country. Central satellite television