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随着我国科学技术的不断发展,数字有线电视也得到了广泛应用,成为的人们日常生活中所不可缺少的一部分。数字有线电视的核心部分是其前端系统,它包括信号输入、信号处理、信号输出和信息管理四大部分,是数字有线电视的信息交换中心,这四大部分各自又有其复杂的若干子系统,它们各有不同的功能和特点,互相合作缺一不可构成了一个整体。我们只有认真了解和掌握其各个部分的构成、原理和功能特点,才能更好的进行数字电视前端系统的设计、安装和维护,满足数字有线电视用户的需要。本文对数字有线电视系统的特点进行了简要介绍,并且对其系统结构进行了系统分析。
With the continuous development of science and technology in our country, digital cable television has also been widely used as an indispensable part of people’s daily life. Digital cable is the core part of its front-end system, which includes the signal input, signal processing, signal output and information management of four parts, is the digital cable television information exchange center, these four parts have their own complex system of several subsystems , They have different functions and characteristics, and the lack of cooperation can form a whole. Only by conscientiously understanding and composing the composition, principles and functional characteristics of each part of it can we better design, install and maintain the digital television front-end system to meet the needs of digital cable users. This article briefly introduces the characteristics of digital cable television system and systematically analyzes its system structure.