| 基于CPLD和DSP的高速图像采集技术研究 |
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| 引用本文： | 徐婉莹,刘建军,黄新生.基于CPLD和DSP的高速图像采集技术研究[J].电子工程师,2004,30(6):48-50. |
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| 作者姓名： | 徐婉莹 刘建军 黄新生 |
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| 作者单位： | 国防科技大学机电工程与自动化学院,湖南省长沙市,410073 |
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| 摘 要： | 介绍了一种基于复杂可编程逻辑器件(CPLD)和数字信号处理器(DSP)的图像采集系统.系统采用增强型视频输入处理芯片SAA7111A完成视频信号的A/D转换,大大减小了电路的复杂度;利用CPLD,采用全硬件方式实现了两组图像存储器的轮换存储;并利用CPLD极大的灵活性,巧妙地使两组存储器作为DSP与SAA7111A之间的共享内存,摆脱了传统双口RAM数据传输占用大量系统资源的瓶颈,实现了实时高速图像采集的设计目的.
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| 关 键 词： | 图像采集 复杂可编程逻辑器件 数字信号处理器 实时图像处理 |
| 修稿时间： | 2004年2月26日 |
A Study on High-speed Image Acquisition Technology Based on CPLD and DSP |
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| Xu Wanying,Liu Jianjun,Huang Xinsheng.A Study on High-speed Image Acquisition Technology Based on CPLD and DSP[J].Electronic Engineer,2004,30(6):48-50. |
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| Authors: | Xu Wanying Liu Jianjun Huang Xinsheng |
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| Abstract: | An image acquisition system based on enhanced video input processor SAA7111A to accomplish the analog to digital conversion of video signals is introduced in this paper. In this way,the complexity of the circuit is greatly decreased. By utilizing the superiority of complex programmable array logic(CPLD),two memories were used to store image data in turn,and the two memories can be shared by DSP and SAA7111A to overcome the shortcoming of using dual-port RAM. By taking these measures,the object of high-speed image processing was achieved finally. |
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| Keywords: | image acquisition CPLD digital signal processor real-time image processing |
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