【摘要】 介绍了一种针对视频图像的采集和处理系统。系统采用CCD摄像头、视频解码芯片SAA7111、可编程逻辑芯片CPLD、高速可读写存储器SRAM,以及数字信号处理器DSP等核心器件。笔者对DSP和CPLD的接口作了较为详细的讨论,设计时采用了DSP片上的DMA控制器以DMA方式进行图像数据的传送,这样不仅加快了数据传送的速度,而且使得系统的设计更加简捷清晰,调试起来更为方便。更多还原

【Abstract】 A system of gathering and processing to the picture of the video is introduced.The components includs CCD camera,decoding chip SAA7111,the programmable logic chip CPLD,read-write memory SRAM and high speed signal processor DSP.DSP and the CPLD connection to the external component are discussed.The system uses the DMA way on the DSP to transmit the picture data.Therefore,it can speed up the data transmission and make the debugging more convenient as well.更多还原