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什么是数字电视?数字电视是一项全新的有线电视服务系统,不同于现在大多数家庭收看电视所收看电视节目采用传统的模拟信息。数字电视是指将传统的模拟电视信息经过采样、量化、编码,转化成二进制的数字信息,然后进行处理、传输、存储和记录,通过机顶盒接收、解码、转换成 AV 信号,通过现有的有线网络传输到每家每户。由于数字信号传输过程不易受干扰,用户收看数字电视时没有模拟信号电视的雪花、重影等现象。
What is a digital television? Digital television is a new cable television service system, unlike most families watching TV now watch TV programs using traditional analog information. Digital TV refers to the traditional analog TV information through sampling, quantization, encoding, into binary digital information, and then processed, transmitted, stored and recorded by the set-top box to receive, decode, convert AV signals, through the existing cable Network transmission to every household. Due to the digital signal transmission process is not subject to interference, the user watching digital television without analog signal television snowflakes, ghosting and so on.