公开(公告)号：US08466895B2

公开(公告)日：2013-06-18

申请号：US13027474

申请日：2011-02-15

申请人： Jui-Ming Liu ,  Chung-Wen Chang ,  Feng-Wei Yang ,  Shen-Feng Tai

发明人： Jui-Ming Liu ,  Chung-Wen Chang ,  Feng-Wei Yang ,  Shen-Feng Tai

IPC分类号： G06F3/041

CPC分类号： G06F3/044 ,  G06F3/0416 ,  G06F2203/04104

摘要： A positioning method and a driving apparatus for a touch panel having a plurality of sense electrodes in an axis direction are disclosed. The driving apparatus detects the sense electrodes to obtain a plurality of sensed values. The driving apparatus counts the number of multiple candidate electrodes, wherein the candidate electrode is an electrode having a sensed value larger than a first threshold value. The first threshold value is increased and the number of the candidate electrodes is counted again if the number of the candidate electrodes is larger than a second threshold value. At least one electrode is selected as a positioning electrode from the candidate electrodes if the number of the candidate electrode is not larger than the second threshold value. A position of a touch point on the touch panel in the axis direction is calculated based on the position and sensed value of the positioning electrode.

摘要翻译： 公开了一种在轴向上具有多个感测电极的触摸面板的定位方法和驱动装置。 驱动装置检测感测电极以获得多个感测值。 驱动装置计数多个候选电极的数量，其中候选电极是具有大于第一阈值的感测值的电极。 如果候选电极的数量大于第二阈值，则第一阈值增加并且再次计数候选电极的数量。 如果候选电极的数量不大于第二阈值，则从候选电极选择至少一个电极作为定位电极。 基于定位电极的位置和感测值来计算触摸面板上的轴向上的触摸点的位置。