基于AD9883A与USB的VGA图像采集与显示系统  

VGA image acquisition and display system based on AD9883A and USB

作　　者：黄玲[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072

出　　处：《电子设计工程》2009年第5期66-68,71,共4页Electronic Design Engineering

摘　　要：提出一种高分辨率高、刷新率图像采集及显示系统。采集系统选用高采样率低功耗的A/D转换器,把以VGA接口方式给出的图像信号转换成数字信号,系统采用FPGA控制电路,通过USB传输模块把图像数据传送到PC机显示。该系统设备已成功应用于VGA图像采集与显示实验,可支持多达3路8 bit位宽,最高采样率达110 MHz的数据通道或1路VGA图像信号。实验表明,该系统采样精度高,性能稳定可靠,具有通用性和实时性。The paper puts forward a scheme of designing the high resolution,high speed data image acquisition and display system.The aequisition system uses high speed and high precision video A/D converter AD9883A,which image signals are transmitted to digital signals.The system controls circuit using FPGA,then the digital signals are transmitted to PC to display through USB transmission unit.This system has successfully been used in VGA image acquisition and displaying experiment. It adapts to the 3×8 bits data routeways with the highest sampling frequency of 110MHz or one channel VGA image signals. This experiment shows that the system has high acquisition precision,practical abilities and real-time characteristics performances stably.

关 键 词：数据采集 AD9883A FPGA USB 

分 类 号：TN911.73[电子电信—通信与信息系统]