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    • 6. 发明专利
    • Negative pixel compensation
    • 负像素补偿
    • JP2011023012A
    • 2011-02-03
    • JP2010169769
    • 2010-07-09
    • Apple Incアップル インコーポレイテッド
    • LAND BRIAN RICHARDSYOUSEFPOR MARDUKEHOTELLING STEVEN PORTER
    • G06F3/044G06F3/041
    • G06F3/044G06F3/0418G06F2203/04104
    • PROBLEM TO BE SOLVED: To compensate a negative pixel in a touch sensitive device. SOLUTION: The device can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the device. To do so, the device can switch to a configuration to measure the grounding condition of the touching object and use the measurement to compensate the touch output values from the device accordingly. In the switched configuration, a first set of lines of the device can be switched between a coupling to a stimulation signal input to drive the device, a coupling to a capacitance signal output to output a signal indicative of the object's grounding condition, and a coupling to ground. A second set of lines of the device is coupled to a touch signal output to output a signal indicative of the object's touch at the device. The grounding signal can be applied to the touch signal to compensate for the negative pixel effect. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:补偿触敏设备中的负像素。

      解决方案:由于接触设备的物体接地不良,器件可以补偿触摸信号输出中的负像素效应。 为此,设备可以切换到配置以测量触摸对象的接地状态,并使用测量值相应地补偿设备的触摸输出值。 在切换配置中,设备的第一组线路可以在耦合到输入的刺激信号以驱动设备之间切换,耦合到电容信号输出以输出指示对象的接地状态的信号,以及耦合 到地面 设备的第二组线耦合到触摸信号输出以输出指示对象在设备处的触摸的信号。 接地信号可以应用于触摸信号来补偿负像素效应。 版权所有(C)2011,JPO&INPIT

    • 9. 发明专利
    • Negative pixel compensation
    • AU2010202693B2
    • 2012-06-21
    • AU2010202693
    • 2010-06-28
    • APPLE INC
    • LAND BRIAN RICHARDSYOUSEFPOR MARDUKEHOTELLING STEVEN PORTER
    • G06F3/041
    • Negative pixel compensation in a touch sensitive device is disclosed. The device can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the device. To do so, the device can switch to a configuration to measure the grounding condition of the touching object and use the measurement to compensate the touch output values from the device accordingly. In the switched configuration, a first set of lines of the device can be switched between a coupling to a stimulation signal input to drive the device, a coupling to a capacitance signal output to output a signal indicative of the object's grounding condition, and a coupling to ground. A second set of lines of the device can be coupled to a touch signal output to output a signal indicative of the object's touch at the device. In addition or alternatively, in the switched configuration, the first set of lines of the device can be switched to function as the second set of lines and vice versa. The grounding signal can be applied to the touch signal to compensate for the negative pixel effect.
    • 10. 发明专利
    • Negative pixel compensation
    • GB2471772B
    • 2012-01-25
    • GB201011402
    • 2010-07-07
    • APPLE INC
    • LAND BRIAN RICHARDSYOUSEFPOR MARDUKEHOTELLING STEVEN PORTER
    • G06F3/044G06F3/041
    • Negative pixel compensation in a touch sensitive device is disclosed. The device can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the device. To do so, the device can switch to a configuration to measure the grounding condition of the touching object and use the measurement to compensate the touch output values from the device accordingly. In the switched configuration, a first set of lines of the device can be switched between a coupling to a stimulation signal input to drive the device, a coupling to a capacitance signal output to output a signal indicative of the object's grounding condition, and a coupling to ground. A second set of lines of the device can be coupled to a touch signal output to output a signal indicative of the object's touch at the device. In addition or alternatively, in the switched configuration, the first set of lines of the device can be switched to function as the second set of lines and vice versa. The grounding signal can be applied to the touch signal to compensate for the negative pixel effect.