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Enhanced fingerprint detection

  • US 20010025532A1
  • Filed: 12/29/2000
  • Published: 10/04/2001
  • Est. Priority Date: 12/30/1999
  • Status: Active Grant
First Claim
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1. A fingerprint detection apparatus comprising:

  • a capacitive sensor cell for sensing a fingerprint pattern;

    a voltage output terminal adapted to be coupled to the body of a person whose fingerprint pattern in being detected;

    a switch for selectively providing a first voltage potential and a second voltage potential to the voltage output terminal sequentially while the fingerprint pattern is being detected.

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  • 6 Assignments
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