The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2001
Filed:
Nov. 19, 1998
Michihisa Suga, Tokyo, JP;
NEC Corporaion, Tokyo, JP;
Abstract
Providing a fingerprint detection apparatus which is small in size, low in cost and high in reliability. The fingerprint detection apparatus includes a shape transfer unit having a contact face for being contacted by a finger whose fingerprint is to be detected, the shape transfer unit having a thickness which varies, when a finger contacts with a surface which serves as the contact face, in accordance with pressures which are produced by concave and convex patterns of the fingerprint of the finger, and a detection driving circuit unit for detecting a pattern of the fingerprint based on variations of the thickness of the shape transfer unit and outputting results of the detection as electric signals, and detects a fingerprint pattern in accordance with variations of the thickness of the shape transfer unit.