用FPGA构建多屏控制系统分析

Analysis on Building Multi-Screen Control System with FPGA

数码光处理投影机(DLP)多屏控制系统的核心技术是多路视频图像阵列(VGA)的视频信号拼接,关键点在于数字信号的处理速度及存储器的工作速度,现场可编程逻辑门阵列(FPGA)应用在此问题解决方面占有强大的优势。另外为了降低对存储器的工作速度及容量的要求,采用压缩采样技术对多路输入的VGA信号进行处理。

The application of Field Programmable Gata Array （FPGA） on Digital Lighting Process （DLP） Projector has shown great advantages for solving the problems of the digital signal processing speed and the memory working speed after the A/D conversion of high speed video signal in the progress of video signal splicing of multi-channel Video Graphics Array （VGA）. Besides, in order to lower the requirements on the working speed and capacity of memory, the under-sampling technology is adopted for processing VGA signal with multi-channel input.