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CONTACT SENSITIVE DEVICE

  • US 20070084643A1
  • Filed: 11/17/2006
  • Published: 04/19/2007
  • Est. Priority Date: 12/23/1999
  • Status: Active Grant
First Claim
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1. A method of determining information relating to a contact on an active contact sensitive device comprising the steps of:

  • providing a panel-form member capable of supporting bending wave vibration;

    generating bending wave vibration in the member from one location on the member to probe for information relating to a contact;

    contacting the member at a discrete location to produce a change in the generated bending wave vibration in the member;

    measuring the changed bending wave vibration in the member at two locations on the member to determine a measured bending wave signal; and

    processing the measured bending wave signal to calculate information relating to the contact including applying a correction to convert the measured bending wave signal to a propagation signal from a non-dispersive wave source.

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