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NOISE CORRECTION FOR STYLUS APPLICATIONS ON TABLETS AND OTHER TOUCH DEVICES

  • US 20140152582A1
  • Filed: 11/30/2012
  • Published: 06/05/2014
  • Est. Priority Date: 11/30/2012
  • Status: Active Grant
First Claim
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1. A stylus detection apparatus for detecting contacts from a stylus, the apparatus comprising:

  • a touch sensor panel comprising a plurality of electrodes, each electrode configured to receive one or more signals from a stylus; and

    a processor, the processor capable of;

    measuring a first signal from a first electrode;

    measuring one or more signals from a pre-determined number of second electrodes;

    generating a noise estimate based on the measured one or more signals from the pre-determined number of second electrodes; and

    adjusting the measured first signal based on at least the generated noise estimate.

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