公开(公告)号：US08314779B2

公开(公告)日：2012-11-20

申请号：US12390637

申请日：2009-02-23

申请人： Wing Chi Stephen Chan ,  Wai Pak Choi ,  Wai Kin Cheng ,  Kwok Wah Chu ,  Siu Hong Lui ,  Yao Lu ,  Wai Hon Ng

发明人： Wing Chi Stephen Chan ,  Wai Pak Choi ,  Wai Kin Cheng ,  Kwok Wah Chu ,  Siu Hong Lui ,  Yao Lu ,  Wai Hon Ng

IPC分类号： G06F3/045

CPC分类号： G06F3/044 ,  G06F3/04883 ,  G06F2203/04808

摘要： A controller for detection of touches by a single finger or multiple fingers on a touch panel, the touch panel including a first group of electrodes arranged in a first direction and a second group of electrodes arranged in a second direction, thereby forming a plurality of crossover points. The controller includes: a plurality of signal drivers coupled to the first group of electrodes and configured to excite the first group of electrodes sequentially using a spread spectrum signal; a plurality of signal sensors coupled to the second group of electrodes and configured to detect peaks and troughs of capacitive coupled signals at the second group of electrodes, the detecting being performed simultaneously for the crossover points along a current one of the first group of electrodes that is being excited; and a signal processing device configured to detect the touches on the touch panel and to determine touch positions and touch movements, based on the detected peaks and troughs of the capacitive coupled signals.

摘要翻译： 一种用于在触摸面板上检测单个手指或多个手指触摸的控制器，所述触摸面板包括沿第一方向布置的第一组电极和沿第二方向布置的第二组电极，由此形成多个交叉 积分 所述控制器包括：多个信号驱动器，其耦合到所述第一组电极并且被配置为使用扩频信号顺序地激励所述第一组电极; 多个信号传感器，其耦合到所述第二组电极并且被配置为检测所述第二组电极处的电容耦合信号的峰值和谷值，所述检测同时对于沿着所述第一组电极中的当前电极的交叉点执行， 正在兴奋 以及信号处理装置，被配置为基于检测到的电容耦合信号的峰值和谷来检测触摸面板上的触摸并确定触摸位置和触摸移动。