嵌入式Linux和Qtopia下矩阵键盘输入的实现  

Implementation of Matrix Keyboard Input in Embedded Linux and Qtopia

作　　者：李翠[1] 屈玉贵[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,安徽合肥230027

出　　处：《计算机系统应用》2010年第9期105-109,共5页Computer Systems & Applications

基　　金：安徽高校省级自然科学研分重点项目计划(JK2009A13;JK2009A25)

摘　　要：详细介绍了基于嵌入式Linux和Qtopia的矩阵键盘输入实现方法。通过重载Qt的事件过滤器,结合信号和槽机制,利用两级状态处理及有效输入的界定,来简化输入过程,减少按键次数,提高输入效率。同时利用Qtopia的图形显示,使输入界面清晰,更适用于嵌入式终端设备。This paper introduces an input method in detail based on embedded Linux and Qtopia matrix keyboard.By reimplementing the Qt event filter, combined with signal and slot mechanism to deal with the use of two-tier status, it is possible to use the definition of the effective input to simplify the input process, reduce the number of pressing button, and enhance the efficiency of input.At the same time, with the use of Qtopia graphical display, the input interface is clearer and more applicable to the embedded device.

关 键 词：嵌入式终端 矩阵键盘 QTOPIA 事件过滤器 信号与槽机制 

分 类 号：TP334.23[自动化与计算机技术—计算机系统结构]