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按计划,2010年我国全面普及数字电视,2015年我国将关闭所有模拟信号。根据信号的空间传播方式,数字电视主要包括4种形式:数字电视地面传输系统、数字有线电视系统、数字卫星电视系统、IP数字电视系统。随着数字电视的发展,数字地面波和卫星广播服务越来越受到民众的重视。特别是数字卫星服务,数字卫星接收系统利用七倍于模拟技术的科技带来更完美的图像与音效,亦可提供更多的频道选择,同时数字卫星广播能够提供高品质的影音效果,让爱好影视娱乐的人们可以享受到更高品质的娱乐感受。
As planned, China will popularize digital TV in 2010 and all analog signals will be closed in 2015 in China. According to the spatial transmission of signals, digital television mainly includes four forms: digital television terrestrial transmission system, digital cable television system, digital satellite television system and IP digital television system. With the development of digital television, digital terrestrial waves and satellite broadcasting services have drawn more and more attention from the public. In particular, digital satellite service, digital satellite receiver system uses seven times the technology of analog technology to bring more perfect image and sound effects, but also provide more channel options, and digital satellite broadcasting can provide high quality audio and video effects, so that hobbies Movie entertainment people can enjoy higher quality entertainment experience.