Digital Television Broadcast System

After the black and white TV and color television,digital TV becomes the third television.With the rapid development of computer technology, communication technology and consumer electronic technology.Digital technique has been widely used.With the digital TV emergence the regenerate has taken place in multimedia field.The digital TV makes the widely and deeply infective.And it has got attention of the broadcast,communicate,computer as well as any other correlative industry.The broadcast system of TV station has been changed from tradition broadcast system composed of video cassette and compute switch console to the new digital hard disk broadcast system which used the video frequency server,hard disk and matrix to be core.How the Digital TV come into realize? After introducing some relevant concepts and expectation the future of the digital TV.And then introduce the basic technical theory of digital TV.This thesis is base on the practice project of construct a digital hard disk broadcast system for Kun Ming TV station.Discuss the idiographic blue print of system.As well as bring the project into effect.Analysis the whole process of digital hard disk,include core server,database,switch equipment,and how to choice the hardware and software for control.Introduce how to construct the digital hard disk broadcast system that use the date hard disk to be core,and how it is work as well as finally make the stabilization,safety,effect broadcast coming to fruition.Finally in my thesis focus on the arisen problem during the system is taking into practice.And then gives the method to resolve it.