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Acoustic touch position sensor

  • US 5,573,077 A
  • Filed: 06/07/1994
  • Issued: 11/12/1996
  • Est. Priority Date: 11/16/1990
  • Status: Expired due to Term
First Claim
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1. A touch panel comprising:

  • a substrate capable of propagating a shear wave, said substrate having at least one touch surface;

    a first transducer coupled to said substrate for imparting a shear wave into said substrate for propagation along a first path, a touch on said substrate touch surface forming a perturbation in said shear wave;

    a second transducer coupled to said substrate for receiving a shear wave propagating along said first path to provide a signal representative thereof.

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