利用FPGA和USB总线的视频图像的采集与处理系统设计

Design of an image sampling and processing system based on FPGA and USB bus

构建了以FPGA为核心芯片的高速图像采集与处理系统,图形采集频率可达13·5MHz.在该系统中,采用了视频A/D芯片SAA7111A将电视信号转换成数字信号,并由FPGA作为控制器将数字信号存入SRAM中,以便进行处理,提取有用数据;系统还采用了EZUSB2131Q芯片来进行处理后的数据与PC机的传输.

This paper designed an high-speed image sampling and processing system based on FPGA, whose image-sampling frequency was 13.5 MHz. In the system the video A/D chip SAA7111A was employed to convert video data into digital signal, and the digital signal was storied in RAM by FPGA for next processing to obtain the useful data. In addition, the EZUSB2131Q chip was used to transmit the processed data between PC and FPGA .