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Title: US6107935: Systems and methods for access filtering employing relaxed recognition constraints
[ Derwent Title ]


Country: US United States of America

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12 pages

 
Inventor: Comerford, Liam David; Carmel, NY
Maes, Stephane Herman; Danbury, CT

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 2000-08-22 / 1998-02-11

Application Number: US1998000021755

IPC Code: Advanced: G07C 9/00; G10L 17/06;
IPC-7: G06F 7/04;

ECLA Code: G10L17/06; G07C9/00C2D;

U.S. Class: Current: 340/005.52; 382/115; 382/116; 382/117; 382/118; 704/245; 704/246; 704/250; 704/273; 704/E17.007;
Original: 340/825.31; 340/825.34; 704/246; 704/250; 704/273; 704/245; 382/115; 382/116; 382/117; 382/118;

Field of Search: 340/825.31,825.34 704/246,250,273,245 367/197 382/115,116,117,118

Priority Number:
1998-02-11  US1998000021755

Abstract:     A speaker recognition system for selectively permitting access by a requesting speaker to one of a service and facility include an acoustic front-end for computing at least one feature vector from a speech utterance provided by the requesting speaker; a speaker dependent codebook store for pre-storing sets of acoustic features, in the form of codebooks, respectively corresponding to a pool of previously enrolled speakers; a speaker identifier/verifier module operatively coupled to the acoustic front-end, wherein: the speaker identifier/verifier module identifies, from identifying indicia provided by the requesting speaker, a previously enrolled speaker as a claimed speaker; further, the speaker identifier/verifier module associates, with the claimed speaker, first and second groups of previously enrolled speakers, the first group being defined as speakers whose codebooks are respectively acoustically similar to the claimed speaker (i.e., cohort set) and the second group being defined as speakers whose codebooks are acoustically similar to the claimed speaker but not as acoustically similar as the codebooks of the speakers in the first group (i.e., legion set); and still further, the speaker identifier/verifier module verifies the requesting speaker by comparing the at least one feature vector of the requesting speaker to the codebooks of the previously enrolled speakers in the second group and, in response to such comparison, generates an indicator indicating that the requesting speaker is one of verified and not verified for access to one of the service and facility.

Attorney, Agent or Firm: F. Chau & Associates, LLP ;

Primary / Asst. Examiners: Zimmerman, Brian; Dalencourt, Yves

Maintenance Status: E2 Expired  Check current status

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 39 claims
What is claimed is:     1. A user recognition system for selectively permitting access by a requesting user to one of a service and facility, the system comprising:
  • means for extracting at least one biometric attribute from the requesting user;
  • means for storing previously extracted biometric attributes respectively corresponding to a pool of previously enrolled users;
  • means for identifying, from identifying indicia provided by the requesting user, a previously enrolled user as a claimed user;
  • means for associating, with the claimed user, first and second groups of previously enrolled users, the first group being defined as users who are respectively biometrically similar to the claimed user with respect to the extracted biometric attribute and the second group being defined as users who are biometrically similar to the claimed user but not as biometrically similar as the users in the first group; and
  • means for verifying the requesting user by comparing the extracted biometric attribute of the requesting user to the pre-stored biometric attributes of the previously enrolled users in the second group and, in response to such comparison, generating an indicator indicating that the requesting user is one of verified and not verified for access to one of the service and facility.


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Forward References: Show 33 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (33)   |   Backward references (2)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 22pp US5510777  1996-04 Pilc et al.  AT&T Corp. Method for secure access control
Get PDF - 9pp US5897606  1999-04 Kanevsky et al.  Yamaichi Electronics Co., Ltd. Shock vibration storing method
       
Foreign References: None

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