×

Touch detection using multiple simultaneous stimulation signals

  • US 9,990,084 B2
  • Filed: 08/29/2016
  • Issued: 06/05/2018
  • Est. Priority Date: 06/13/2007
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus comprising:

  • drive circuitry configured to simultaneously apply, during each of a plurality of frames, a plurality of stimulation signals to a plurality of drive lines of touch sensor circuitry, the plurality of stimulation signals having a stimulation frequency and multiple stimulation phases, wherein the stimulation frequency during at least two of the plurality of frames is different; and

    sense circuitry configured, during each of the plurality of frames, to receive a sense signal from each of a plurality of sense lines of the touch sensor circuitry into one or more sense channels and to demodulate the sense signals with one or more demodulation signals, the one or more demodulation signals having a demodulation frequency and multiple demodulation phases based on the stimulation frequency and the multiple stimulation phases being applied during that frame.

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