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本文提出了一种基于FPGA的模拟视频检测进行自动倒换的设计方案。该方案首先将3路复合模拟视频CVBS进行数模转换,BT.656格式的数字视频连接到FPGA,FPGA进行BT.656数字视频解码,并对视频内容进行分析,包括黑场、彩条、静帧等情况。实验结果表明,在一块ALTERA cyclone 2c8 FPGA芯片上可以实现3路模拟视频的分析和倒换。
This paper presents a FPGA-based analog video detection to automatically switch the design. The program first digital composite analog video CVBS 3 to digital conversion, BT.656 format digital video connected to the FPGA, FPGA BT.656 digital video decoding, and video content analysis, including black, color bar, static Frame and so on. The experimental results show that in an ALTERA cyclone 2c8 FPGA chip can be achieved three analog video analysis and switching.