摘要
在SDI矩阵切换串行数字信号时,传统方式因对串行转并行的图像帧处理不够妥善,常出现切换抖动等问题。本文深入阐述基于可编程逻辑器件(PLD)构建SDI矩阵同步无缝切换系统的设计思路与实现方法,借助PLD灵活可编程、逻辑处理能力强的优势,精心设计配套硬件电路与软件算法,实现SDI信号在矩阵切换时的同步无缝衔接,显著增强广播电视信号传输的稳定性与可靠性。系统测试结果显示,该设计契合实际应用对SDI矩阵切换的高标准要求。
When traditional methods are used to switch serial digital signals via an SDI matrix,switching jitter and other issues often occur due to improper processing of image frames during serial-to-parallel conversion.This paper elaborates in depth on the design concept and implementation method of constructing an SDI matrix synchronous seamless switching system based on Programmable Logic Devices(PLD).By taking advantage of the flexible programmability and strong logic processing capabilities of PLD,the supporting hardware circuits and software algorithms are carefully designed to achieve synchronous and seamless connection of SDI signals during matrix switching,significantly enhancing the stability and reliability of radio and television signal transmission.The results of system tests show that this design meets the high-standard requirements of practical applications for SDI matrix switching.
作者
牛纪龙
Niu Jilong(Rizhao Radio and Television Station,Shandong 276800,China)
出处
《广播与电视技术》
2026年第1期48-52,共5页
Radio & TV Broadcast Engineering
关键词
SDI矩阵
同步信号
无缝切换
可编程逻辑器件
SDI matrix
Synchronous signal
Seamless switching
Programmable Logic Device(PLD)
