U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!

Newsletter  PatentStorm News

Make the Most of PatentStorm

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest patents by subscribing to an RSS feed.

Got questions? Ask a Patent Expert!

Registered users: Manage your profile, comments and alerts.

 

US Patent 5987153 - Automated verification and prevention of spoofing for biometric data

US Patent Issued on November 16, 1999
Estimated Patent Expiration Date: Icon_subject April 29, 2016Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
loading...


View Patent Images (PDF)
(Registered users only)

Abstract

The invention provides a method of and system for automated verification and prevention of spoofing for biometric data, such as handwritten signatures. Biometric data known to be true, such as signatures already entered by the authentic person, are recorded and compared against test biometric data, such as a test signature entered by a person seeking authentication. The test biometric data is compared against the known biometric data, and is accepted only if the test biometric data is sufficiently "close" to the known biometric data, but not so close as to indicate that known biometric data was recorded and played back for the test. The test biometric data represents a handwritten signature given contemporaneously by the person seeking access, and is verified against a set of template signatures earlier given by at least one authorized person. A set of features are extracted from both the template signatures and the test signature; comparison of these features yeilds a distance measure between the test signature and the template signature. If the distance measure is either too large or too small, the test signature is rejected. The extracted features for a set of test signatures which were accepted in the past is also recorded, and the test signature is rejected if it is identical to any of the past test signatures.

Inventors

Assignee

Application

No. 639613 filed on 04/29/1996

US Classes:

382/115, Personnel identification (e.g., biometrics)340/5.82Biometrics

Field of Search

382/115, Personnel identification (e.g., biometrics)382/116, Using a combination of features (e.g., signature and fingerprint)382/119, Using a signature382/124, Using a fingerprint382/112, Document or print quality inspection (e.g., newspaper, photographs, etc.)235/380, Credit or identification card systems235/382, Permitting access235/382.5, Changeable authorization902/3, Evaluates biometrics902/4, Means to read data stored on identifier*902/5, And to verify identity of user*902/6, Image processor (e.g., video camera)902/25, SPECIFIC IDENTIFIER* (E.G., BANK CARD)902/26Including semiconductor chip (e.g., smart card)

Examiners

Primary: Mancuso, Joseph

Attorney, Agent or Firm

US Patent References

4805222, Method and apparatus for verifying an individual's identity
Issued on: 02/14/1989
Inventor: Young ,   et al.
4993068, Unforgeable personal identification system
Issued on: 02/12/1991
Inventor: Piosenka, et al.
5202929, Data system and method
Issued on: 04/13/1993
Inventor: Lemelson
5559895, Adaptive method and system for real time verification of dynamic human signatures
Issued on: 09/24/1996
Inventor: Lee, et al.
5642431, Network-based system and method for detection of faces and the like
Issued on: 06/24/1997
Inventor: Poggio, et al.
5680470, Method of automated signature verification
Issued on: 10/21/1997
Inventor: Moussa, et al.
5692065Apparatus and method for determining image quality
Issued on: 11/25/1997
Inventor: Prakash, et al.

Foreign Patent References

  • 0 281 224 EP 01/22/1988
  • WO 95/16974 WO 06/22/1995

International Class

G06K 009/00

Comments

No comments for this page
 
 
Forgot password?
Register here