| 一种基于USB接口的动态黑白数字视频信号源板的设计与实现 |
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| 引用本文： | 李宏彬.一种基于USB接口的动态黑白数字视频信号源板的设计与实现[J].现代电子技术,2005,28(7):122-124. |
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| 作者姓名： | 李宏彬 |
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| 作者单位： | 西安理工大学,机仪学院,陕西,西安,710048 |
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| 摘 要： | USB总线具有高速传输、热插拔、即插即用等特点，在计算机领域已经得到越来越广泛的应用．介绍了一种采用USB接口的动态视频板的软硬件设计与实现。在硬件设计上他采用单片机和复杂可编程逻辑器件技术，并通过USB接口完成上位计算机控制下视频运动图像的生成。单片机读取上位机前景运动图像位置信息并对视频板图像存储器进行刷新，复杂可编程逻辑器件巡回扫描视频板图像存储器并通过D／A转换后生成视频信号。该系统上位机界面设计采用VB语言。
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| 关 键 词： | USB总线 视频信号 单片机 复杂可编程逻辑器件 D／A转换 非易失随机存储器 |
| 文章编号： | 1004-373X(2005)07-122-03 |
| 修稿时间： | 2004年11月22 |
Design and Realization of a Kind of USB Interface Movable Digital Video Signal Board |
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| Li Hongbin.Design and Realization of a Kind of USB Interface Movable Digital Video Signal Board[J].Modern Electronic Technique,2005,28(7):122-124. |
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| Authors: | Li Hongbin |
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| Abstract: | The USB Bus has the characteristics of highspeed,hot plug in and pull out, it has been widely used on the domain of computer. This paper introduces the software and hardware design of a kind of USB interface dynamic video signal board. On the design of hardware it adopts the technology of MPU, CPLD ,and achieves the creation of video locomotive image which is controlled by epigynous computer via USB. MPU reads the position information of foreground locomotive image from epigynous computer, and refurbishes the image information of NVRAM on video signal board. CPLD scans NVRAM itinerantly and creats video signal via D/A conversion. The software interface design of epigynous computer is programmed by language of VB. |
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| Keywords: | USB Bus video signal MPU CPLD D/A conversion NVRAM |
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