基于FPGA的实时视频传输机制

FPGA-based real-time video transmission mechanism

文章基于FPGA实现了视频实时传输机制,采用高速串行总线SRIO×4模式进行视频传输,传输带宽达到10 Gbps。采用乒乓机制进行视频传输,视频传输延时为μs量级。对每行视频首尾加入特殊字符进行编码,在接收端通过解码可以正确恢复原有视频时序及数据,错帧率极低。此视频传输机制通用性极高,摆脱了以往视频传输中对视频制式、分辨率、帧率等的影响,可以传输cameralink-full模式、SDI等模式视频。该传输机制适用于数据量大、实时性高的视频传输和存储领域。

A real-time video transmission mechanism based on FPGA is implemented.High-speed serial bus SRIO is adopted for video transmission,with the bandwidth reaching 10 Gbps.The video is transmitted by means of ping-pong transmission,and the video delay is ofμs magnitude.Special characters are added at the beginning and end of each line of video to encode at the sending end,and the original video can be restored correctly by decoding at the receiving end.The wrong frame rate is very low.This video transmission mechanism has the advantage of high universality,getting rid of the influence such as video format,resolution,and frame rate.Videos in cameralink-full mode,SDI and other modes can be transmitted.The transmission mechanism is suitable for video transmission and storage where large data volume and high real-time performance are demanded.