一种高分辨率视频切换矩阵研究与设计  

Research and Realization of a Kind of High Resolution Video Switch Matrix

作　　者：吕卫国[1] 

机构地区：[1]中国船舶重工集团公司江苏自动化研究所,江苏连云港222006

出　　处：《计算机测量与控制》2011年第4期987-989,共3页Computer Measurement &Control

摘　　要：传统的视频切换矩阵带宽低,切换规模小,为可靠切换高分辨率、大规模输入、高带宽与长距离视频信号,研究设计了一种基于AD8118视频切换芯片、LPC2478主控芯片的高分辨率128路输入32路输出平衡视频切换矩阵系统,给出了总体设计方案,硬件实现具体方案和原理图、软件任务流程图;在船坞修理厂、舰船停泊码头实际应用表明,系统运行稳定可靠,可实现大规模视频信号切换,减少了云台端切换设备数量,切换信号传输距离长,抗干扰能力强,准确且实时性好。The traditional video switching matrix switching bandwidth is low,switching scale is small.In order to switch high resolution,large scale input,high bandwidth and long distance video signal,research and realization of a high resolution balance video signal of 128 channel input and 32 channel output video switch matrix based on video chip ad8118 and MCU chip lpc2478.This paper gives the realization of hardware design,software flow chart and main scheme design.The matrix applied in dockyard fix factory which show the matrix is stably and reliably,it is able to switch large scale input signal,so it decrease the numbers of switch Matrix in it can switch long distance signal,it has strong anti-interference,exact and real-time ability.

关 键 词：LPC2478 AD8118 视频切换 μC/OS-Ⅱ 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]