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Systems and methods for resonance detection

  • US 8,156,809 B2
  • Filed: 03/27/2008
  • Issued: 04/17/2012
  • Est. Priority Date: 03/27/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • transmitting an actuator signal to an actuator coupled to a touch surface of a device, the actuator signal configured to cause the actuator to output a force to the touch surface;

    receiving a response of the touch surface to the force;

    determining a resonant frequency of the touch surface based at least in part on the response, wherein the resonant frequency of the touch surface is based in part on user interaction with the touch surface; and

    outputting a signal indicative of the resonant frequency.

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