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Fingerprint apparatus and method

  • US 20050036665A1
  • Filed: 09/02/2004
  • Published: 02/17/2005
  • Est. Priority Date: 01/31/2000
  • Status: Active Grant
First Claim
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1. An image sensor adapted to generate an electrical signal representing an image of a skin surface of a finger, said image sensor comprising:

  • a transparent cover having first and second surfaces;

    a plurality of light responsive means arranged under said second surface of said cover in a narrow line-type array, wherein when said first surface of said cover is in sliding contact with said skin surface of said finger, said light responsive means being responsive only to light directly emerging from an inside of said finger through said cover to generate an electrical signal representing a raw image of a fingerprint as said skin surface is slid across said first surface of said cover; and

    means responsive to said electrical signal representing a raw image of a fingerprint for reconstructing an image of the fingerprint when the skin surface of said finger is swiped across and perpendicular to said narrow line-type array.

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