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Touch sensor

  • US 20080007529A1
  • Filed: 07/07/2006
  • Published: 01/10/2008
  • Est. Priority Date: 07/07/2006
  • Status: Abandoned Application
First Claim
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1. A touch sensor comprising:

  • a keyboard having a key defining a touch sensing location;

    control circuitry associated with the key, wherein the control circuitry includes a transistor, the key controls the transistor based on a touch event;

    a pulse signal generator connected to the control circuitry and generating pulsed signals for transmission to the control circuitry, wherein the pulsed signals power the transistor, the transistor outputs a touch signal when a touch event occurs at the associated key and the transistor outputs a non-touch signal when no touch event occurs at the associated key; and

    an analyzer connected to the control circuitry and receiving from the transistor one of the touch signal indicating the touch event and the non-touch signal indicating the no touch event.

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