嵌入式视频系统中VGA接口的设计  

A design of VGA interface for the embedded video system

作　　者：范加利[1] 赵国良[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《应用科技》2008年第10期37-40,共4页Applied Science and Technology

摘　　要：在嵌入式视频系统中,为了满足调试以及用户的需要,对采集到的图像进行显示是不可缺少的,同时系统应能兼容较多的视频接口类型,这显然会增加系统的软、硬件的复杂性.针对上述问题,在基于TMS320DM642的嵌入式图像处理系统中,提出了一种新的VGA视频接口设计方法.将DSP芯片与视频编码芯片SAA7105简单连接,在不增加系统的成本和复杂性的前提下,实现了系统中VGA接口的设计.该方法已成功应用到某虹膜识别系统中.In order to meet the demand of debugging, the display of captured images is essential in the embedded video system. Meanwhile, the system should provide as many video interfaces as possible, thus increasing the complexity of software and hardware of the system obviously. In the design of an embedded image processing system based on TMS320DM642, we proposed a new designing method for VGA interface. With a simple connection of DSP chip and video encoding SAA7105 chip, we completed the design of VGA interface but not increasing cost and complexity of the system. This method his been applied in an iris recognition system successfully.

关 键 词：嵌入式系统 VGA接口 视频显示 DSP 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]