广播电视制播领域PTP同步系统冗余设计  

Redundancy Design of PTP Synchronization System in TV Production and Broadcasting Center

作　　者：张建东 欧臻彦 Zhang Jiandong;Ou Zhenyan(Academy of Brodcasting Planning,NRTA,Beijing 100866,China)

机构地区：[1]国家广播电视总局广播电视规划院,北京100866

出　　处：《广播与电视技术》2021年第6期46-51,共6页Radio & TV Broadcast Engineering

基　　金：国家重点研发计划资助(National Key R&D Program of China),“4K超高清电视制播系统研制”项目,项目编号:2019YFB1804300(课题一:2019YFB1804301)。

摘　　要：本文从一个PTP同步冗余系统模型入手,分析了BMCA的工作原理和由BMCA决定的同步倒换过程,探讨了广播电视制播领域PTP系统冗余设计和运行面临的设备和链路冗余配备、时钟参数配置、设备层级和边界时钟级联数量等实际问题。Starting from a PTP redundancy system model, working principle of BMCA and synchronization signal switching process determined by BMCA are analyzed, some practical problems faced by redundancy design and running of PTP system in TV production and broadcasting field are discussed, such as redundancy of equipment and links, clock parameter configuration, equipment architecture and cascade number of boundary clock.

关 键 词：PTP BMCA 冗余 广播电视制播 

分 类 号：TN948.1[电子电信—信号与信息处理]