摘要
介绍了一种利用FPGA(现场可编程门阵列)和A/D转换芯片ADV7123实现红外图像显示卡的设计方法。该显示卡的主要功能包括像素灰度级转换、图像放大以及PAL(逐行倒相)制视频信号生成。详细讨论了显示卡的设计思想和硬件结构、FPGA各逻辑模块设计、FPGA配置加载、显示卡与主系统互连以及利用ADV7123生成PAL制视频信号的方法。该图像显示卡用于红外图像处理系统的硬件调试和红外图像处理算法的效果观测,实际使用情况表明,该显示卡能够很好地满足红外图像处理系统的图像输出需求。
A design method of infrared image display card using FPGA and ADV7123 is presented. The main functions include pixel gray level conversion, image zoom and PAL standard video signal generation. The design concepts, hardware architecture, FPGA logical modules, FPGA configuration, interconnection between display card and master board, and the PAL standard video signal generation method using ADV7123 are discussed in detail. The display card can be adapted to the hardware debugging of infrared image system and carry out observation of the infrared image processing algorithms. The actual using shows that the card can meet the disolay reauirement of the infrared image processing system well.
出处
《电子工程师》
2008年第6期64-66,80,共4页
Electronic Engineer
