HD-SDI数字视频信号处理及传输的FPGA设计与实现

FPGA design and implementation of HD-SDI digital video signal processing and transport

设计了一种符合SMPTE292M标准的高清晰度数字电视信号采集传输用的HD-SDI卡,介绍了其电路结构,对HD-SDI中的视频数据、视频定时基准码、行号数据、校验码进行了分析,并就数字视频识别和提取模块、DMA传输模块和PLX9656局部总线到Avalon总线的转换模块进行了设计。FPGA采用Altera公司的StratixEP1S25,实验调试结果表明,HD-SDI数字视频信号处理及传输工作稳定可靠。

This paper designed a newly developed SDI card for HDTV of SMPTE292M, and gave the construction of the HDSDI card＇ s circuits. Gave detailed analyses of video data, timing reference codes, line number data, CRC, DMA transport, conversion between PLX9656 local bus and Avalon bus. This paper also presented the design of these modules, The design adopted Ahera＇ s Stratix EP1 S25 as FPGA, and experimental results show that the processing and transport of HD-SDI card is stabilization and trustiness.