随着4K、8K技术的快速发展,广播电视制作与播出领域进行了网际互连协议(Internet Protocol,IP)化的迭代,为高分辨率节目的传输提供更加快捷、灵活的应用环境.在这一过程中,同步时钟起到了重要的保障作用.基于此,分析IP系统中精确时间协议(Precision Time Protocol,PTP)时钟同步原理,阐述PTP在不同场景的应用,探讨如何构建一个统一基准的同步系统,以满足广电系统IP化的需求.
The Application of PTP in Radio and Television IP System
With the rapid development of 4K and 8K technologies,the Internet Protocol (IP) has been iterated in the field of radio and television production and broadcast,providing a faster and more flexible application environment for the transmission of high-resolution programs.In this process,synchronous clock plays an important safeguard role.Based on this,this paper analyzes the clock synchronization principle of Precision Time Protocol (PTP) in IP system,describes the application of PTP in different scenarios,and discusses how to build a unified benchmark synchronization system to meet the needs of IP broadcasting system.
Precision Time Protocol (PTP)prioritysynchronous switching
NETL
NSTL
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