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Multiple Stimulation Phase Determination

  • US 20100060591A1
  • Filed: 09/10/2008
  • Published: 03/11/2010
  • Est. Priority Date: 09/10/2008
  • Status: Active Grant
First Claim
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1. A method for determining phases of stimulation signals to be simultaneously applied to drive lines of a touch sensor panel, comprising:

  • forming a matrix having a plurality of rows and columns comprising elements, each row representing a single step in a plurality of steps needed to compute values for generating an image of touch, each column representing a drive line to be stimulated, and each element representing the phase of the stimulation signal to be applied to a particular drive line in a particular step, wherein the matrix is invertible and produces gains greater than one; and

    for each step in the plurality of steps, stimulating the drive lines with stimulation signals having phases in accordance with the elements of the matrix.

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