【作者】 张志华； 吴健学；

【Author】 ZHANG Zhi-hua WU Jian-xue (Wuhan Research Insitute of Post and Communication,Hubei,Wuhan 430074,China)

【机构】 武汉邮电科学研究院；

【摘要】 鉴于视频字符叠加在现实生活中有着巨大的实用性,而一些传统专用芯片实现的视频字符叠加系统具有外围电路复杂、不便于嵌入式应用的缺点,本文介绍了一种基于新型芯片MAX7456构建的视频字符叠加系统,给出了该系统的硬件电路设计及其软件设计方法。经过在实验室中试验,发现从监视器上显示的字符叠加效果良好,相信能在实际中得到广泛应用.更多还原

【Abstract】 In consideration of the video character superimposition system has great practicability and the realizing method using traditional IC chip has disadvantages of complex peripheral circuit and hardness to embedded into other systems,a video character superimposition system is designed based on a new IC chip MAX7456.Its circuit diagram and software design method are also given in this paper.By tested in the lab,the character superimposition displayed on the monitor has good effect.It’s believed this system has broad practical application.更多还原