近年来,在广播电视领域出现一种引人注目的新颖电视接收机即数字电视机,这是电视技术的一项重大突破.它发展迅猛,并于1983年作为第五代电视机进入市场.它的出现为电视接收机的多功能和高性能开辟了新的途径,同时进一步降低了电视机的生产成本,将电视机的发展推向新的阶段. In recent years, the emergence of a compelling new television receiver known as a digital television in the field of broadcast television, a major breakthrough in television technology, has been rapidly gaining prominence as a fifth generation television set in 1983. Its emergence opens up new avenues for the multifunctionality and high performance of television receivers, while further reducing the production cost of television sets and pushing the development of television sets to a new stage.