Biometric authentication device
First Claim
1. A biometric authentication device for generating biometric data on the basis of biometric information of a user and for authenticating the user on the basis of a reference biometric data of the user, the biometric authentication device comprising:
- a storage unit for storing the reference biometric data and working reference biometric data; and
a central processing unit for controlling a process of maintaining reference biometric data to be carried out by the biometric authentication device, the process comprising;
initializing the working reference biometric data by copying the reference biometric data;
obtaining new biometric data on the basis of new biometric information;
performing authentication by comparison of said new biometric data with said working reference biometric data, and upon successful authentication, updating the working reference biometric data by copying said new biometric data;
calculating a matching ratio of the reference biometric data and the updated working reference biometric data; and
urging the user to carry out registration of reference biometric data when the matching ratio is equal to or lower than a predetermined value.
1 Assignment
0 Petitions
Accused Products
Abstract
In a biometric authentication device that includes biometric-authentication-data generating means for generating biometric authentication data from biometric data of a user, and authentication means for performing authentication of the biometric authentication data on the basis of reference biometric data of the user, a matching ratio of the reference biometric data and updated and registered second reference biometric data is calculated, and the user is requested to re-register the reference biometric data and the second reference biometric data when the matching ratio is lower than a predetermined threshold value.
22 Citations
15 Claims
-
1. A biometric authentication device for generating biometric data on the basis of biometric information of a user and for authenticating the user on the basis of a reference biometric data of the user, the biometric authentication device comprising:
-
a storage unit for storing the reference biometric data and working reference biometric data; and a central processing unit for controlling a process of maintaining reference biometric data to be carried out by the biometric authentication device, the process comprising; initializing the working reference biometric data by copying the reference biometric data; obtaining new biometric data on the basis of new biometric information; performing authentication by comparison of said new biometric data with said working reference biometric data, and upon successful authentication, updating the working reference biometric data by copying said new biometric data; calculating a matching ratio of the reference biometric data and the updated working reference biometric data; and urging the user to carry out registration of reference biometric data when the matching ratio is equal to or lower than a predetermined value. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A maintaining method of reference biometric data, the method comprising:
-
storing the reference biometric data and working reference biometric data; initializing the working reference biometric data by copying the reference biometric data; obtaining new biometric data on the basis of new biometric information; performing authentication by comparison of said new biometric data with said working reference biometric data, and upon successful authentication, updating the working reference biometric data by copying said new biometric data; calculating a matching ratio of the reference biometric data and the updated working reference biometric data; and urging the user to carry out registration of reference biometric data when the matching ratio is equal to or lower than a predetermined value. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A computer-readable recording medium that stores a computer program for maintaining reference biometric data by controlling a biometric authentication device according to a process comprising:
-
storing the reference biometric data and working reference biometric data; initializing the working reference biometric data by copying the reference biometric data; obtaining new biometric data on the basis of new biometric information; performing authentication by comparison of said new biometric data with said working reference biometric data, and upon successful authentication, updating the working reference biometric data by copying said new biometric data; calculating a matching ratio of the reference biometric data and the updated working reference biometric data; and urging the user to carry out registration of reference biometric data when the matching ratio is equal to or lower than a predetermined value. - View Dependent Claims (12, 13, 14, 15)
-
Specification