一种新的实时通用视频处理器的设计

实时通用视频处理器是图像处理系统的核心，协调实时通用视频处理器的Ａ／Ｄ，ＤＳＰ，Ｄ／Ａ三者的时序，使ＤＳＰ有更多的时间处理图像数据是设计的关键。在分析国内外文献中提出了逆程和正程工作方式下的视频处理器原理和结构后，又提出一种新的全程工作方式的视频处理器设计方案，并对三种工作方式的电路及工作原理进行了比较。

DESIGN OF A NOVEL REAL-TIME VIDEO PROCESSOR

The real-time video processor is the kernel of the image processing sys-tem. Because of the real-time requirement of the processing system and the limitation of the CPU and the memory, it is important to coordinate the A/D, D/A and DSP of the video processor and give the DSP enough time to process the data of image for designing the procesing system. It has been given the principle and the structure of the real-time image processor working in two ways in previous articles, but the sequential circuit is complex and the processing time of the video processor is short, the complex algorithm can not be operated. A novel method of designing the real-time video processor with simple sequential circuit is given which can work in whole-course processing mode and process the data of image in one framing period. The comparasion on the three methods is also given.