触摸屏技术及其在μC/GUI中的实现  

The Touch-screen Technique and Its Realization in μC/GUI

作　　者：王原丽[1] 吕永江[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《现代电子技术》2006年第7期132-134,共3页Modern Electronics Technique

摘　　要：介绍了4线电阻式触摸屏的结构和工作原理,简单介绍了一款触摸屏专用接口芯片ADS7843的特点和原理,并具体给出了4点定位法来实现触摸屏到LCD的校准,最后探讨了嵌入式图形系统μC/GUI及其触摸屏功能的实现,文中所述相关方法已经使μC/GU在ARM平台上成功运行。The internal structure and work theory of the 4 - wire resistive touchscreen are introduced. The feature and working model of the special A/D chip for the 4 - wire resistive touch screen of ADS7843 are simple introduced. At the same time the four - point coordinate transform methods are given out. At last,the realization of the thouch-screen in μC/GUI is discussed,and the method running in ARM platform is successful.

关 键 词：触摸屏 ADS7843 ΜC/GUI 4线电阻 

分 类 号：TN873[电子电信—信息与通信工程]