×

TOUCH DETECTION USING MULTIPLE SIMULTANEOUS STIMULATION SIGNALS

  • US 20150301681A1
  • Filed: 07/02/2015
  • Published: 10/22/2015
  • Est. Priority Date: 06/13/2007
  • Status: Active Grant
First Claim
Patent Images

1. A system for obtaining a plurality of values used to generate one or more images of touch, comprising:

  • touch sensor circuitry including a plurality of drive lines and a plurality of sense lines, wherein the drive lines are different from the sense lines; and

    an integrated circuit coupled to the touch sensor circuitry, the integrated circuit comprising;

    drive circuitry configured to simultaneously apply, during a first frame, a plurality of first stimulation signals to the plurality of drive lines of the touch sensor circuitry, wherein the plurality of first stimulation signals include signals having a first stimulation frequency and multiple stimulation phases; and

    sense circuitry configured to receive a first sense signal from each of the plurality of sense lines of the touch sensor circuitry into one or more sense channels and configured to demodulate the first sense signals with one or more first demodulation signals, wherein the one or more first demodulation signals have a first demodulation frequency, wherein the first demodulation frequency is based on the first stimulation frequency, and wherein the one or more first demodulation signals have multiple demodulation phases that are based on the multiple first stimulation phases.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×