Capacitive touch system with improved touch sensing precision and coordinate extraction method thereof
    1.
    发明授权
    Capacitive touch system with improved touch sensing precision and coordinate extraction method thereof 有权
    具有改进的触摸感测精度的电容式触摸系统及其坐标提取方法

    公开(公告)号:US09207823B2

    公开(公告)日:2015-12-08

    申请号:US14139992

    申请日:2013-12-24

    CPC classification number: G06F3/044 G06F3/0416 G06F2203/04104

    Abstract: The inventive concept discloses a capacitive touch system and a coordinate extraction method thereof. The coordinate extraction method has operations of phases 1 and 2.First and second axis coordinates of a first frame are obtained by providing driving signals in a first direction selected in the first phase and performing a sensing in a second direction different from the first direction. First and second axis coordinates of a second frame are obtained by providing driving signals in a second direction selected in the second phase and performing a sensing in the first direction. First and second axis coordinates having a relatively high coordinate precision among the first and second axis coordinates may be finally determined as a touch coordinate. According to the inventive concept, since a touch sensing precision is improved to be strong against a noise, a touch coordinate is more precisely obtained.

    Abstract translation: 本发明的概念公开了电容式触摸系统及其坐标提取方法。 坐标提取方法具有阶段1和2的操作。通过在第一阶段中选择的第一方向提供驱动信号并且沿与第一方向不同的第二方向执行感测来获得第一帧的第一和第二轴坐标。 通过在第二相中选择的第二方向提供驱动信号并且在第一方向上执行感测来获得第二帧的第一和第二轴坐标。 可以最终确定在第一和第二轴坐标之间具有较高坐标精度的第一和第二轴坐标作为触摸坐标。 根据本发明的概念,由于触摸感测精度提高到抵抗噪声的强度,因此更精确地获得触摸坐标。

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