DVI数字视频图像数据的实时截取方法

Real-time Intercept Method of DVI Digital Video Image Datas

介绍了一种基于DVI接口的高分辨力数字视频信号进行实时截取的方法,图像截取采用了动态实时调整行列起点、按行组包的方法,利用FPGA内嵌双口FIFO,实现高分辨力图像数据的实时截取和降频实时传输。该方法可以省去外部缓存SRAM操作,扩大图像截取范围,可广泛运用于数字平板显示系统。

A new real-time data intercept method for high resolution digital video singal is proposed based on DVI interface The method uses dynamic real-time adjustable range starting point and data packet by line--buffer. Real-time intercepting of high resolution images data and real-time transport with decreasing frequency are realised by FPGA embedded Dual--port FIFO. This design can eliminate the need for an external cache SRAM operation and enlarge image intercept range. It can be widely used in panal display system.