目前我国大部分使用的黑白或彩色电视机都统称为模拟式接收机,它们是以模拟式电子技术为基础的。模拟式接收机具有抗干扰性差、容易出现重影、图象清晰度差、耗电量大、可靠性差等固有缺陷,使它的发展受到局限。数字电视是以数字电路代替模拟电路为主要标志的。数字电视采用二进制编码,即以一连串的0和1表示,电视信号的处理和传输完全实现数字化;它采用超大规模集成电路和数字技术,使电视机行、场存储器有很大革新;它既可以按规定的标准扫描,也 At present, most of the black-and-white or color televisions used in our country are collectively referred to as analog receivers, and they are based on analog electronic technology. Analog receivers suffer from inherent limitations such as poor immunity to interference, ghosting, poor image sharpness, high power consumption and poor reliability, which limits their development. Digital TV is the digital circuit instead of analog circuits as the main symbol. Digital television uses a binary code, a series of 0s and 1s, to digitize the processing and transmission of television signals; it uses ultra-large-scale integrated circuits and digital technologies to make television line and field memories a great innovation; According to the provisions of the standard scan, too