Palm judgment method of capacitive touch screen

Palm judgment method of capacitive touch screen

  • CN 101,882,042 B
  • Filed: 06/08/2010
  • Issued: 10/12/2011
  • Est. Priority Date: 06/08/2010
  • Status: Active Grant
First Claim
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1. method of operating that is used to discern touch sources comprises:

  • Detect described touch sources, obtain at least one sampled point and capacitance thereof, with capacitance more than or equal to the described sampled point of first threshold as effective sampling points;

    If the number of described effective sampling points then calculates the area that is surrounded by described effective sampling points more than or equal to second threshold value, described area is as cornerwise tetragonal area with the line between two phase mutual edge distances described effective sampling points farthest;

    If described area is smaller or equal to the 3rd threshold value, and more than or equal to the 4th threshold value, then according to the described touch sources of relative position distribution relation recognition of described effective sampling points.

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