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CAPACITIVE SENSING DEVICE AND CAPACITIVE SENSING METHOD

  • US 20160179285A1
  • Filed: 05/04/2015
  • Published: 06/23/2016
  • Est. Priority Date: 12/19/2014
  • Status: Active Grant
First Claim
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1. A capacitive sensing method, comprising:

  • detecting present measured values of a plurality of reference points selected from a plurality of sensing points, wherein the sensing points are defined by electrodes intersected with one another and the sensing points are configured to form an array, and wherein the reference points are located at the periphery of the array;

    generating a present difference value according to the present measured values of the reference points and at least one reference measured value;

    obtaining a selected adjustment factor according to a relation setting and the present difference value, wherein the relation setting is the relationship between signal difference values and adjustment factors;

    detecting present measured values of the sensing points;

    generating a plurality of position signals of the sensing points according to the present measured values of the sensing points;

    adjusting the position signals according to the selected adjustment factor; and

    controlling the output of the adjusted position signals according to a reference signal.

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