METHOD AND APPARATUS TO IMPROVE NOISE IMMUNITY OF A TOUCH SENSE ARRAY
    6.
    发明申请
    METHOD AND APPARATUS TO IMPROVE NOISE IMMUNITY OF A TOUCH SENSE ARRAY 有权
    提高触觉感知阵列噪声免疫的方法和装置

    公开(公告)号:US20120268415A1

    公开(公告)日:2012-10-25

    申请号:US13246565

    申请日:2011-09-27

    IPC分类号: G06F3/044

    CPC分类号: G06F3/044 G06F3/0418

    摘要: A method for improving noise immunity of capacitive sensing circuit associated with a touch sense array is disclosed. The capacitive sensing circuit receives a response signal from a touch sense array. The capacitive sensing circuit measures a noise component of the response signal. When a level of noise of the noise component within a passband of the capacitive sensing circuit is greater than a threshold, the capacitive sensing circuit changes at least one parameter of capacitive sensing circuit to move the passband substantially outside the frequency spectrum of the noise component.

    摘要翻译: 公开了一种用于提高与触摸感测阵列相关的电容式感测电路的抗噪声性的方法。 电容感测电路从触摸感测阵列接收响应信号。 电容感测电路测量响应信号的噪声分量。 当电容感测电路的通带内的噪声分量的噪声水平大于阈值时,电容感测电路改变电容式感测电路的至少一个参数,以使通带基本上在噪声分量的频谱外移动。