基于FPGA的视频数据解析及回放技术

FPGA-based Digital Video Resolution and Playback

本文给出了一种远程视频会议系统节点设备的视频数据捕获及回放的FPGA实现。本地捕获数据在进行压缩之前,需要对每一帧中色度信号U、V、亮度信号Y以及同步信号进行分离。通过DSP EM IF接口与FPGA之间的通信,实现了捕获和回放的单片FPGA设计,给出了基于FPGA的视频数据解析方法,同时也给出了DSP EM IF控制器和SDRAM控制器的FPGA实现。工程实践表明,本文的设计减少了DSP中算法软件的复杂度,提高了节点设备处理的速度,且稳定可靠。

An FPGA -based implementation of digital video resolution and playback for net meeting knotdevice is proposed. Before video compression, chrominance signals U,V and luminance signal Y should be separated from each other in every frame. Through communication between DSP EMIF and FPGA, this design implements video data＇s capture and playback based on a single FPGA chip. This paper gives out the frame resolution method and the implementation of DSP EMIF controller and SDRAM controller. The engineering application shows that this design simplifies the complexity of DSP algorithm and improves the realtime characteristic.