广播电视同步系统研究  

Research on Radio and Television Synchronization System

作　　者：李轶玮 LI Yiwei(Shanghai Media Tech,Shanghai 200072,China)

机构地区：[1]上海东方传媒技术有限公司,上海200072

出　　处：《电视技术》2022年第6期207-217,共11页Video Engineering

摘　　要：从广播电视系统同步的需求入手,研究、梳理广播电视系统中常用的同步参考信号及其同步锁定原理,特别是当前IP化系统的同步机制。针对典型的基带/IP混合架构系统,以同步脉冲发生器工作原理为出发点,结合不同制式系统的实际应用,分析该类型系统的同步锁定机制,探讨基带/IP混合架构系统同步定时在实践中容易出现的问题及相应的解决方案。Starting with the requirements of radio and television system synchronization, this paper studies and combs the common synchronization reference signals and synchronization locking principles in radio and television systems, especially the synchronization mechanism of current IP based systems. Aiming at the typical baseband/IP hybrid architecture system, taking the working principle of synchronous pulse generator as the starting point, combined with the practical application of different systems, this paper analyzes the synchronous locking mechanism of this type of system, and discusses the problems that are easy to appear in practice and the corresponding solutions of synchronous timing of baseband/IP hybrid architecture system.

关 键 词：同步系统 频率锁定 相位锁定 帧同步 

分 类 号：TN948.14[电子电信—信号与信息处理]