摘 要 本文首先介绍数字电视技术中的关键技术和技术标准,通过比较世界上现有的三种数字电视系统标准并结合通信网络发展趋势,提出了数字电视技术发展趋势和在中国的应用。 In Nowadays, DTV (Digital Television) is a conception wel-known to the world. But It is difficult to get systemic understanding about DTV from the point of technology view, for it includes too many complex technologies. So this article urge to giving a simple explanation for DTV technologies and system. It also introduces some key technologies and system structure about DTV. According to compare the difference between three standards of DTV system, which are set up by USA, EU, JAPAN respectively, and analyze the trend of telecommunication technologies, The article make some predictions about DTV technologies and its adoption in China. |