基于DVB-C数字广播系统的原理与应用

The Principle and Application of Digital Broadcasting System based on DVB-C

随着社会的发展和生态环境的变化,突发性公共事件明显增多,极端性自然灾害不断出现,为适应应急处置的更高要求,基于有线电视的数字应急广播新技术应运而生,采用DVB-C的相关标准协议和规范,可让户外大喇叭和家中机顶盒同时接收广播节目,兼容现有的数字电视系统,运行维护更方便。

With the rapid economic and social development and ecological environment is increasingly serious,all kinds of unexpected public event increased obviously,all kinds of extreme natural disasters appear continuously,put forward higher requirements to the social management and emergency handling work. With the cable TV from analog to digital,from one-way to two-way,The new digital emergency broadcast technology also breeds based on catv. Using the DVB-C related standard protocols and specifications,can make the outdoor big horn and set-top box of the user receive a broadcast program at the same time,compatible with the existing digital TV system,operation and maintenance more convenient.