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一、前言 A/D、D/A变换器对广播电视以及图象处理技术的发展有很大的影响,近年来由于结构和工艺的改进,出现了新型高速廉价的A/D变换器和简化结构的D/A变换器,这促进了电视设备数字化迅速发展。数字电视传输系统、帧同步机、数字特技切换设备,数字电视接收机等已进入市场。本文对促进数字电视迅速发展起决定性作用的A/D、D/A变换器作简单介绍。
I. Introduction A / D, D / A converter on the radio and television and image processing technology has a great influence on the development in recent years due to structural and technological improvements, there has been a new high-speed cheap A / D converter and simplified Structure of the D / A converter, which promoted the rapid development of digital television equipment. Digital television transmission systems, frame synchronization machines, digital effects switching equipment, digital TV receivers, etc. have entered the market. This article gives a brief introduction of A / D, D / A converter that plays a decisive role in promoting the rapid development of digital television.