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Biometric authentication device, biometric authentication method, and storage medium

  • US 8,542,095 B2
  • Filed: 01/19/2009
  • Issued: 09/24/2013
  • Est. Priority Date: 02/22/2008
  • Status: Active Grant
First Claim
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1. A biometric authentication device comprising:

  • a signal pattern generating unit that generates a signal pattern of a signal transmitted to a living body;

    a signal transmitting unit that transmits a signal to the living body based on the signal pattern from the signal pattern generating unit;

    a signal receiving unit that receives a response signal transmitted from the living body, the received response signal being in response to the transmitted signal that is based on the generated signal pattern;

    a transfer feature calculating unit that calculates a transfer feature of a signal transmitted through the living body based on the signal pattern from the signal pattern generating unit and the response signal received by the signal receiving unit;

    a feature amount extracting unit that extracts a feature amount based on the transfer feature that is calculated, the feature amount varying for every living body; and

    a feature amount collating unit that collates the extracted feature amount with a feature amount stored in a feature amount storing unit in advance, whereinthe signal pattern generating unit is configured to change the signal pattern every time the signal pattern generating unit generates the signal pattern.

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