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Method of detecting floating mode of a touch panel

  • US 8,866,778 B2
  • Filed: 12/18/2012
  • Issued: 10/21/2014
  • Est. Priority Date: 01/06/2012
  • Status: Active Grant
First Claim
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1. A method of detecting floating mode of a touch panel, comprising steps of:

  • (a) reading a sensing cluster having multiple sensing points and presetting a detection window;

    (b) taking each sensing point of the sensing cluster as a center point of the detection window to perform scanning;

    (c1) determining whether the center point has a negative sensing value less than a first floating margin, when positive, proceeding step (c2)(c2) determining a count of other sensing points in the detection window having the sensing values greater than a first grounding margin, incrementing an accumulative number by one when the count exceeds a first critical value;

    (d) repeating step (c1) until all the sensing points in the sensing cluster have been taken as the center point of the detection window for scanning; and

    (e) when the accumulative number is greater than a second critical value, determining the current sensing cluster is generated under a floating mode.

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