PORTABLE DATA STORAGE MEDIUM FOR BIOMETRIC USER IDENTIFICATION
2 Assignments
0 Petitions
Accused Products
Abstract
A portable data carrier (1) comprises an executable training module (8) which provides in a memory (4, 5) of the data carrier (1) a reference model (10; M) for the biometric recognition of a user of the data carrier (1) by a recognition module (9), whereby a biometric comparison vector (16) which lies within the acceptance range (A) of the reference model (10; M) is accepted by the recognition module (9) as coming from the user. In so doing, the training module (8) defines the reference model (10; M) by model nodes (P, P0-P4) which are formed from biometric reference vectors (17; N) in each case coming from the user, whereby a new model node (P, P0-P4) is added to the reference model (10; M) when the associated reference vector (17; N) lies outside the acceptance range (A) of the reference model (10; M).
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Citations
38 Claims
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1-20. -20. (canceled)
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21. A method for providing a reference model (10;
- M) having an acceptance range (A) on a portable data carrier (1) for biometrically recognizing a user of the data carrier (1), wherein a biometric comparison vector (16) which lies within the acceptance range (A) of the reference model (10;
M) is accepted as coming from the user, comprising the steps of;defining the reference model (10;
M) by model nodes (P, P0-P4) which are formed from biometric reference vectors (17;
N) in each case coming from the user, during an initial training phase, wherein for generating the reference model (10;
M) a multitude of biometric reference vectors (17;
N) is recorded, and wherein the reference model (10;
M) is defined piecewise by local models (L0-L3) each having a validity range (G0-G3), and adding a model node (P, P0-P4) to the reference model (10;
M), during an application phase of the reference model (10;
M) upon checking a comparison vector (16) when the comparison vector (16) lies outside the acceptance range (A) of the reference model (10;
M) and it is certain that the comparison vector (16) actually comes from the user. - View Dependent Claims (22, 23, 24, 25, 26, 27, 35, 36, 38)
- M) having an acceptance range (A) on a portable data carrier (1) for biometrically recognizing a user of the data carrier (1), wherein a biometric comparison vector (16) which lies within the acceptance range (A) of the reference model (10;
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28. A portable data carrier (1) comprising a memory (4, 5), a communication interface (6), a processor (2), and a recognition module (9) and a training module (8) each executable by the processor (2), wherein the training module (8) is configured to provide in the memory (4, 5) a reference model (10;
- M) having an acceptance range (A) for the biometric recognition of a user of the data carrier (1) by the recognition module (9), wherein a biometric comparison vector (16) which lies within the acceptance range (A) of the reference model (10;
M) is accepted by the recognition module (9) as coming from the user;
wherein the training module (8) is configured to define the reference model (10;
M) by model nodes (P, P0-P4) during an initial training phase,wherein for generating the reference model (10;
M) a multitude of biometric reference vectors (17;
N) is recorded, which in each case are formed from biometric reference vectors (17;
N) received via the communication interface (6) and coming from the user,wherein the training module (8) during an application phase of the reference model (10;
M) for checking a comparison vector (16) adds a model node (P, P0-P4) to the reference model (10;
M) when the comparison vector (16) lies outside the acceptance range (A) of the reference model (10;
M) and it is certain that the comparison vector (16) actually comes from the user. - View Dependent Claims (29, 30, 31, 32, 33, 34, 37)
- M) having an acceptance range (A) for the biometric recognition of a user of the data carrier (1) by the recognition module (9), wherein a biometric comparison vector (16) which lies within the acceptance range (A) of the reference model (10;
Specification