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Personal identification method and apparatus using acoustic resonance analysis of body parts

  • US 6,724,689 B2
  • Filed: 03/08/2002
  • Issued: 04/20/2004
  • Est. Priority Date: 03/08/2002
  • Status: Expired due to Fees
First Claim
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1. An acoustic spectra personal identification system, comprising:

  • (a) transducer means including at least one acoustic wave emitting means and at least one acoustic wave detecting means positioned spaced apart whereby a selected body part may be placed upon said transducer means, bridging and in simultaneous contact with said at least one emitting means and with said at least one detector means;

    (b) means for monitoring the pressure applied by a said selected body part upon said transducer means;

    (c) acoustic wave generator means adapted to transmit a selected acoustic wave form signal, encompassing a plurality of frequencies within a 20-100 kHz frequency range, to said at least one acoustic wave emitting means;

    (d) acoustic wave analyzer means adapted for converting acoustic wave signals received from said detecting means into digital acoustic spectra signals representing the acoustic spectrum of said received acoustic wave signals;

    (e) recording means for storing digitized acoustic spectra signals; and

    (f) acoustic spectra comparison means.

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