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Electronic device and method of processing user actuation of a touch-sensitive input surface

  • US 10,444,910 B2
  • Filed: 04/25/2016
  • Issued: 10/15/2019
  • Est. Priority Date: 12/28/2012
  • Status: Expired due to Fees
First Claim
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1. An electronic device, comprising:

  • a proximity-sensitive touch sensor array which extends along an input surface of the electronic device and having a conductive pattern, anda processing device coupled to the touch sensor array, the processing device being configured to;

    sense capacitance values of the conductive pattern of the touch sensor array,determine a variation in perpendicular distance of a finger from the input surface as a function of position on the input surface in a spatially resolved manner from the sensed capacitance values,process the sensed capacitance values to determine a finger angle at which the finger is directed towards the input surface and an actuation position on the input surface, wherein the finger angle defined by the variation in perpendicular distance is derived from a spatial gradient of the sensed capacitance values,derive a finger orientation from the sensed capacitance values, the finger orientation defining a direction of a projection of the finger onto the input surface, anduse the determined finger angle and the derived finger orientation when processing user actuation of a touch-sensitive input surface.

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