Biometric authentication device, biometric authentication method and computer readable, non-transitory medium

Patent metadata

Field	Value
Publication number	US-9542543-B2
Application number	US-201113241515-A
Country	US
Kind code	B2
Filing date	Sep 23, 2011
Priority date	Mar 30, 2009
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A biometric authentication device including: a data-for-matching generation portion generating a data for matching from biometric information; an update-demand determine portion determining whether a registered data registered for matching with the data for matching needs updating or not, based on a difference between biometric quality of the registered data and biometric quality of the data for matching; and a registered data replace portion replacing the registered data by a generated data for updating, according to a determination result of the update-demand determine portion.

First claim

What is claimed is:

1. A biometric authentication device comprising:
a storage comprising:
a first storage region configured to store a registered biometric authentication data;
a second storage region configured to store a data for updating the registered biometric authentication data;
a third storage region configured to store quality information of the registered biometric authentication data and quality information of a first biometric data for matching that is generated at a first time point by a biometric sensor of a user for matching with the registered biometric authentication data for biometric authentication; and
a fourth storage region configured to store first information that the first biometric data for matching should be stored by the second storage region or second information that the first biometric data for matching should not be stored by the second storage region, and
a processor configured to execute a process, the process comprising:
referring to the third storage region;
calculating a quality difference between the quality information of the registered biometric authentication data and the quality information of the first biometric data for matching;
changing the second information to the first information when the quality difference is equal to or more than a first threshold, the fourth storage region storing the second information;
changing the first information to the second information when the quality difference is equal to or less than a second threshold, the fourth storage region storing the first information where the first threshold and the second threshold are different;
performing a matching process between the registered biometric authentication data and a second biometric data for matching that is generated at a second time point, after the first time point, by the biometric sensor of the user for matching with the registered biometric authentication data for biometric authentication;
storing the second biometric data for matching in said second storage region as the data for updating the registered biometric authentication data when the matching process is succeeded and the fourth storage region stores the first information; and
updating the registered biometric authentication data using the data for updating the registered biometric authentication data.

2. The biometric authentication device as claimed in claim 1 , wherein the process further comprises deleting a data for updating the registered biometric authentication data having quality information that is the most similar to a data for updating the registered biometric authentication data that is stored newly when a number of the data for updating the registered biometric authentication data stored in the second storage region is larger than a predetermined value.

3. The biometric authentication device as claimed in claim 1 , wherein a number of the data for updating the registered biometric authentication data stored in the second storage region is a predetermined rate of all users including the user.

4. A biometric authentication method comprising:
storing a registered biometric authentication data in a first storage region of a storage;
storing a data for updating the registered biometric authentication data in a second storage region of the storage;
storing quality information of the registered biometric authentication data and quality information of a first biometric data for matching that is generated at a first time point by a biometric sensor of a user for matching with the registered biometric authentication data for biometric authentication, in a third storage region of the storage;
storing a first information that the first biometric data for matching should be stored by the second storage region or second information that the first biometric data for matching should not be stored by the second storage region, in a fourth storage region;
referring to the third storage region;
calculating a quality difference between the quality information of the registered biometric authentication data and the quality information of the first biometric data for matching;
changing the second information to the first information when the quality difference is equal to or more than a first threshold and the fourth storage region stores the second information;
changing the first information to the second information when the quality difference is equal to or less than a second threshold and the fourth storage region stores the first information where the first threshold and the second threshold are different;
performing a matching process between the registered biometric authentication data and a second biometric data for matching that is generated at a second time point, after the first time point, by the biometric sensor of a user for matching with the registered biometric authentication data for biometric authentication;
storing the second biometric data for matching in said second storage region as the data for updating the registered biometric authentication data when the matching process is succeeded and the fourth storage region stores the first information; and
updating the registered biometric authentication data using the data for updating the registered biometric authentication data.

5. The method as claimed in claim 4 , further comprising:
deleting a data for updating the registered biometric authentication data having quality information that is the most similar to a data for updating the registered biometric authentication data that is stored newly when a number of the data for updating the registered biometric authentication data stored in the second storage region is larger than a predetermined value.

6. The method as claimed in claim 4 , wherein a number of the data for updating the registered biometric authentication data stored in the second storage region is a predetermined rate of all users including the user.

7. A computer readable, non-transitory medium storing a program that causes a computer to execute a process, the process comprising:
storing a registered biometric authentication data in a first storage region of a storage;
storing a data for updating the registered biometric authentication data in a second storage region of the storage;
storing quality information of the registered biometric authentication data and quality information of a first biometric data for matching that is generated at a first time point, by a biometric sensor of a user for matching with the registered biometric authentication data for biometric authentication, in a third storage region of the storage;
storing a first information that the first biometric data for matching should be stored by the second storage region or second information that the first biometric data for matching should not be stored by the second storage region, in a fourth storage region;
referring to the third storage region;
calculating a quality difference between the quality information of the registered biometric authentication data and the quality information of the first biometric data for matching;
changing the second information to the first information when the quality difference is equal to or more than a first threshold and the fourth storage region stores the second information;
changing the first information to the second information when the quality difference is equal to or less than a second threshold and the fourth storage region stores the first information where the first threshold and the second threshold are different;
performing a matching process between the registered biometric authentication data and a second biometric data for matching that is generated at a second time point, after the first time point, by the biometric sensor of a user for matching with the r

Assignees

• Niinuma Koichiro
• Fujitsu Ltd

Inventors

• Niinuma Koichiro

Classifications

• G06K9/00885

  Physics · mapped topic

• G06F21/32 Primary

  using biometric data, e.g. fingerprints, iris scans or voiceprints · CPC title

• G06K9/00926

  Physics · mapped topic

• H04L9/3231

  Biological data, e.g. fingerprint, voice or retina (network architectures or network communication protocols for supporting authentication of entities using biometrical features in a packet data network H04L63/0861) · CPC title

• H04L63/0861

  using biometrical features, e.g. fingerprint, retina-scan (cryptographic mechanisms or cryptographic arrangements for entity authentication using biological data H04L9/3231) · CPC title