基于IP化的数字电视前端系统组成  

Composition of IP-based Digital TV Front End System

作　　者：魏巍[1] 翁向明 WEI Wei;WENG Xiangming(TEDA Cable Television Network CO.,LTD.,Tianjin 300457,China)

机构地区：[1]天津泰达有线电视网络有限公司,天津300457

出　　处：《天津科技》2016年第7期73-76,79,共5页Tianjin Science & Technology

摘　　要：DVB数字电视前端系统是整个有线数字电视网络的核心系统,它包括信号输入、信号处理、信号输出、系统管理等功能。近年来广电运营商新业务需求不断增加,传统ASI传输方式已不能满足技术更新的速度及多业务的应用需求,这就要求电视前端必须转型,在有线前端引入IP技术,使传统ASI前端向IP化前端过渡,以打破ASI前端在业务拓展方面的限制。IP前端具有系统结构相对简单、传输方式灵活、系统扩展性强等特点,基于诸多优势各地广电运营商前端系统也逐步升级改造向IP化过渡。介绍了DVB数字电视前端系统IP化改造的一种技术方案,分析了从方案设计到设备选型中的一些特点与创新。DVB digital TV front-end system is a core system of the cable digital TV network,which includes signal input,signal processing,signal output,system management and other functions.In recent years,as radio and television operators’ demand on new businesses is increasing,the traditional ASI transfer mode has been unable to meet the requirements of both the speed of technology updating and the application of multiple services.This requires the transformation of TV front end,including the introduction of CATV head end to push forward the transition from traditional ASI front-end to the IP of the front to break the ASI in front of business development constraints.IP front end has the characteristics of relatively simple system structure,flexible transmission mode and system scalability.Based on many advantages,the radio and television operator front-end system is also gradually upgrading to IP.This paper introduces a technical scheme of IP digital TV front end system DVB transformation,analyzes some characteristics and innovation from the scheme design to equipment selection.

关 键 词：DVB 前端系统 复用器 IPQAM 

分 类 号：TN949.197[电子电信—信号与信息处理]