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一、概述数字图像帧存贮器是数字图像处理设备的基本部件。随着微型计算机系统性能的提高和价格的降低,使图像处理应用更普及、成本更低,除了作文字、图形处理外,还可进一步处理图像、语声等。数字图像处理技术是电视技术和计算机技术的结合,而帧存贮器正是其结合的媒介。视频信息的特点是频率高,数据量大。因此帧存贮器的基本要求和特点是高速度、大容量。针对其大容量,很多帧存贮器都采用廉价的动态RAM。但动态RAM的读写、刷新控制过程相当麻烦,只能采用分库组织轮相存取的方式以弥补访问速度之不足。当帧存贮器的容量
I. Overview Digital image frame memory is the basic component of digital image processing equipment. With the improvement of microcomputer system performance and the decrease of price, the image processing application is more popular and the cost is lower. In addition to writing and graphics processing, the image, voice and the like can be further processed. Digital image processing technology is a combination of television technology and computer technology, and frame memory is its combination of media. Video information is characterized by high frequency, large amount of data. Therefore, the basic requirements and characteristics of the frame memory is high speed, high capacity. For its large capacity, many frame memories use inexpensive dynamic RAM. However, dynamic RAM read and write, refresh control process is quite troublesome, can only be used to organize the organization of the wheel access to make up for lack of access speed. When the frame memory capacity