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SIGNAL PROCESSING FOR TOUCH AND HOVER SENSING DISPLAY DEVICE

  • US 20120050181A1
  • Filed: 09/30/2010
  • Published: 03/01/2012
  • Est. Priority Date: 08/27/2010
  • Status: Active Grant
First Claim
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1. A method for signal processing in a touch and hover sensing display device, the method comprising:

  • determining at least one characteristic of an object hovering over the device;

    calculating a centroid of the hovering object based on the determined characteristic;

    setting a pointer at the calculated centroid as an initial estimate of the pointing direction of the hovering object;

    shifting the pointer from the calculated centroid to another portion of the hovering object based on the determined characteristic; and

    estimating the pointing direction of the hovering object based on the shifted pointer.

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