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目前,电视实现的方式有模拟电视和数字电视两大类。数字电视相对于模拟电视而言的优势不言而喻。数字电视本身又可分为移动和定点两种。移动数字电视是由“数字视频广播地面无线信号”与“数字无线视频播放载体”共同组建的视频收看方案,使用此方案,用户可在数字无线视频信号的覆盖区内,随时收看服务商所提供的电视节目。
At present, there are two broad categories of TV and digital TV: TV. The advantages of digital television over analog TV are self-evident. Digital TV itself can be divided into two kinds of mobile and fixed-point. Mobile digital TV is a video viewing solution jointly developed by “Digital Video Broadcasting Terrestrial Wireless Signal ” and “Digital Wireless Video Playback Carrier ”. With this solution, users can watch at any time within the coverage area of digital wireless video signals TV programs provided by service providers.