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    • 10. 发明授权
    • Payment terminal stylus with touch screen contact detection
    • 付款终端触笔带触摸屏接触检测
    • US08212795B2
    • 2012-07-03
    • US12277990
    • 2008-11-25
    • Chris Henry
    • Chris Henry
    • G06F3/033
    • G06F3/03545
    • In an exemplary embodiment, a stylus operates with a capacitive touch screen only when the stylus tip is in contact with the touch screen. The stylus is used as a sensor to determine the location where a user is touching the surface of a capacitive touch screen, but is not active until the stylus tip is pressed against the touch screen. In an exemplary embodiment, pressing the stylus tip against the touch screen activates the stylus by creating a physical separation in the circuit and disconnecting the stylus tip from ground. When the stylus tip is no longer grounded, it becomes active and is able to operate with a capacitive touch screen. In an exemplary embodiment, signal attenuation may be performed by diverting the sense signal to ground via a capacitor or other electronic component.
    • 在示例性实施例中,仅当触控笔尖与触摸屏接触时,触笔与电容式触摸屏操作。 触笔用作传感器以确定用户接触电容式触摸屏的表面的位置,但是在触针尖端被按压在触摸屏上之前不能激活。 在示例性实施例中,将触针尖靠在触摸屏上通过在电路中产生物理分离并将触针尖与地断开来激活触控笔。 当触控笔尖不再接地时,它会变为活动状态,并且能够使用电容式触摸屏进行操作。 在示例性实施例中,可以通过经由电容器或其他电子部件将感测信号转移到地来执行信号衰减。