| 基于CPLD的胃窥镜图像控制系统 |
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| 引用本文： | 吴建坤,钟堰利,王伟.基于CPLD的胃窥镜图像控制系统[J].光学技术,2004,30(4):473-474. |
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| 作者姓名： | 吴建坤 钟堰利 王伟 |
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| 作者单位： | 北京理工大学,信息科学技术学院光电工程系,北京,100081;北京理工大学,信息科学技术学院光电工程系,北京,100081;北京理工大学,信息科学技术学院光电工程系,北京,100081 |
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| 摘 要： | 介绍了一种顺序制胃窥镜的实时图像控制系统,并给出了具体的方案和实现方法。该系统采用锁相的方式,产生高稳定的像素时钟;使用大容量的视频RAM缓存图像,通过对写入的控制,实现图像的编辑;采用ADV7120与AD722相结合,完成视频的编码输出;所有的控制信号由一片EPM7128来实现。整个系统采用高密度的集成器件,体积小巧,结构紧凑,性能良好。
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| 关 键 词： | 锁相环 视频编码 CPLD 视频RAM |
| 文章编号： | 1002-1582(2004)04-0473-02 |
| 修稿时间： | 2003年11月3日 |
Small image control system of gastroscope based on CPLD |
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| WU Jian-kun,ZHONG Yan-li,WANG Wei.Small image control system of gastroscope based on CPLD[J].Optical Technique,2004,30(4):473-474. |
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| Authors: | WU Jian-kun ZHONG Yan-li WANG Wei |
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| Abstract: | The design and implementation of real-time image system of gastroscope are introduced. A pixel clock is generated by phase lock loop with high stability; large video-RAM is used for image cache; the image can be edited by the control of the writing to the video-RAM; video signal and S-video signal are output by the combined use of ADV7120 and AD722; one chip of EPM7128 is used to generate all the control signal. The whole system is made up of integrated devices which make it small and have good performance. |
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| Keywords: | PLL video encoder CPLD video RAM |
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