可同时输出彩色和灰度图像的VGA视频分配器设计  

Design of VGA video distributor with simultaneously outputting the color and gray image

作　　者：刘小艳[1] 金平[1] 

机构地区：[1]清华大学电子工程系实验教学中心

出　　处：《实验技术与管理》2010年第5期63-66,共4页Experimental Technology and Management

摘　　要：根据计算机VGA（video graphics array）视频信号的特性和性能，设计和实现了一种VGA视频分配器，可将输入的1路彩色VGA视频信号分配成1路彩色和1路灰度VGA视频信号有效输出。重点阐述了分配器的设计原理，分析了其设计要点和采用的关键技术。针对电子线路设计型实验的要求，设计中采用了一些常见的集成电路，可作为电子线路实验平台的关键模块。实际测试表明，分配器性能稳定可靠，图像显示效果良好。According to the characteristic and performance of VGA （video graphics array） video signals, a VGA video distributor is designed and realized, which can distribute one channel of color VGA video signal into one channel color signals and one channel gray signals. The principle of distributor is emphasized, and the key design points and technologies are analyzed. Considering the demand of electronic circuit design experiment, this distributor mainly uses some common integrated circuits to realize, which can become the pivotal module of electronic circuit experiment platform. The test shows that the performance of distributor is stable and reliable, and the image display effect is good.

关 键 词：视频分配器 VGA 彩色/灰度变换 

分 类 号：TN911.73[电子电信—通信与信息系统] G642.0[电子电信—信息与通信工程]