前言从六十年代末期开始,随着大规模集成电路和数字计算机技术的迅速发展,数字技术进入电视技术领域,使一向使用模拟信号方式的电视技术开始了重大变革。目前,电视信号的处理、传输、记录以及电视系统的控制、监测等都开始采用数字技 Preface Beginning in the late 1960s, with the rapid development of large-scale integrated circuits and digital computer technology, digital technology has entered the field of television technology and has brought about a major change in the television technology that has always been using analog signals. At present, the processing, transmission and recording of television signals as well as the control and monitoring of television systems have all started to adopt digital technologies