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Touch Sensor With Measurement to Noise Synchronization

  • US 20130106436A1
  • Filed: 10/31/2011
  • Published: 05/02/2013
  • Est. Priority Date: 10/31/2011
  • Status: Abandoned Application
First Claim
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1. A method comprising:

  • sensing by a touch sensor a periodic noise signal caused by an external power source removably coupled to the touch sensor;

    generating a measurement signal that is synchronized to the periodic noise signal;

    transmitting the measurement signal to a location of the touch sensor; and

    detecting whether a touch has occurred at or near the location of the touch sensor based on a response of the location of the touch sensor to the measurement signal.

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