Terminal apparatus, biometric authentication method, and computer-readable storage medium

Patent metadata

Field	Value
Publication number	US-10126935-B2
Application number	US-201615064855-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 16, 2015
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A terminal apparatus includes an information input device that detects a coordinate value of an input operation position touched by a user, a biometric sensor that captures a capture area of a palm of the user at a time of an input operation to the information input device, to generate biometric data, and a processor. The processor performs a process including matching the biometric data to a corresponding portion of registered biometric data registered in advance and read based on the coordinate value, to compute a similarity of the biometric data to the corresponding portion.

First claim

What is claimed is:

1. A terminal apparatus comprising:
a touchscreen panel integrally including a display device and an information input device that detects a coordinate value of an input operation position on the touchscreen panel touched by a user;
a biometric sensor that captures a capture area of a palm of the user at a time of an input operation to an input operation position on the touchscreen panel by a finger of the user, to generate biometric data; and
a processor that performs a process including
matching the biometric data to a corresponding portion of registered biometric data registered in advance and read based on the coordinate value, to compute a similarity of the biometric data to the corresponding portion,

wherein the touchscreen panel and the biometric sensor are arranged at relative positions so that at least a portion of the palm of the user is captured by the biometric sensor when the user touches any input operation position on the touchscreen panel by the finger of the user, wherein
the process further includes setting a corresponding relationship for converting a first coordinate system on the touchscreen panel into a second coordinate system of the registered biometric data,
the terminal apparatus further comprises:
a registration database including the registered biometric data of the palm of the user captured in a registration area wider than the capture area, and a coordinate value of the registered biometric data in the second coordinate system, and

the matching recognizes a coordinate value of the corresponding portion of the registered biometric data in the second coordinate system, from the coordinate value at a point in time when the biometric data is captured, converted from the first coordinate system into the second coordinate system based on the corresponding relationship, and reads the corresponding portion from the registration database.

2. The terminal apparatus as claimed in claim 1 , wherein the setting includes receiving the biometric data, the coordinate value in the first coordinate system at the point in time when the biometric data is captured, and the coordinate value of the registered biometric data in the second coordinate system, to set the corresponding relationship between the coordinate value in the first coordinate system and the coordinate value of the registered biometric data in the second coordinate system.

3. The terminal apparatus as claimed in claim 1 , wherein
the process further includes extracting features of a biometric image captured by the biometric sensor, to output the biometric data, and
the matching matches the features of the biometric image to a corresponding portion of features of the registered biometric image included in the registered biometric data.

4. The terminal apparatus as claimed in claim 1 , wherein the biometric sensor captures the capture area of the palm in response to the information input device detecting the input operation position on the touchscreen panel touched by the finger of the user.

5. The terminal apparatus as claimed in claim 1 ,
wherein the biometric sensor captures an area of the palm at a plurality of touch positions on the touchscreen panel, simultaneously as when the finger of the user continuously slides on the touchscreen panel, and
wherein the plurality of touch positions are selected from a group consisting of positions where the finger of the user sliding on the touchscreen panel stops for a predetermined time or longer, positions sampled at predetermined sampling times or intervals while the finger of the user slides on the touchscreen panel, and positions after the finger of the user slides a predetermined distance on the touchscreen panel.

6. The terminal apparatus as claimed in claim 5 , wherein the matching performs a partial matching of features of the area of the palm captured by the biometric sensor at each of the plurality of touch positions to each corresponding portion of the registered biometric data.

7. A non-transitory computer-readable storage medium having stored therein a program for causing a computer to execute a process comprising:
acquiring a coordinate value of an input operation position on a touchscreen panel touched by a finger of a user, detected by an information input device, and biometric data of a capture area of a palm of the user captured by a biometric sensor at a time of an input operation to the input operation position on the touchscreen panel by the finger of the user, wherein the touchscreen panel integrally includes a display device and the information input device; and
matching the biometric data to a corresponding portion of registered biometric data registered in advance and read based on the coordinate value, to compute a similarity of the biometric data to the corresponding portion,
wherein the touchscreen panel and the biometric sensor are arranged at relative positions so that at least a portion of the palm of the user is captured by the biometric sensor when the user touches any input operation position on the touchscreen panel by the finger of the user,
wherein the process further comprises:
setting a corresponding relationship for converting a first coordinate system on the touchscreen panel into a second coordinate system of the registered biometric data,
wherein the matching recognizes a coordinate value of the corresponding portion of the registered biometric data in a second coordinate system, from the coordinate value at a point in time when the biometric data is captured, converted from a first coordinate system into the second coordinate system based on the corresponding relationship, and reads the corresponding portion from a registration database including the registered biometric data of the palm of the user captured in a registration area wider than the capture area, and a coordinate value of the registered biometric data in the second coordinate system.

8. The non-transitory computer-readable storage medium as claimed in claim 7 , wherein the setting includes receiving the biometric data, the coordinate value in the first coordinate system at the point in time when the biometric data is captured, and the coordinate value of the registered biometric data in the second coordinate system, to set the corresponding relationship between the coordinate value in the first coordinate system and the coordinate value of the registered biometric data in the second coordinate system.

9. The non-transitory computer-readable storage medium as claimed in claim 7 , wherein the acquiring acquires the biometric data of the capture area of the palm captured by the biometric sensor in response to the information input device detecting the input operation position on the touchscreen panel touched by the finger of the user.

10. The non-transitory computer-readable storage medium as claimed in claim 7 ,
wherein the acquiring acquires biometric data of an area of the palm captured by the biometric sensor captures at a plurality of touch positions on the touchscreen panel, simultaneously as when the finger of the user continuously slides on the touchscreen panel, and
wherein the plurality of touch positions are selected from a group consisting of positions where the finger of the user sliding on the touchscreen panel stops for a predetermined time or longer, positions sampled at predetermined sampling times or intervals while the finger of the user slides on the touchscreen panel, and positions after the finger of the user slides a predetermined distance on the touchscreen panel.

11. The non-transitory computer-readable storage medium as claimed in claim 10 , wherein the matching performs a partial matching of features of the area of

Assignees

• Fujitsu Ltd

Inventors

• Hama Soichi
• Abiko Yukihiro
• Maeda Satoshi
• Semba Satoshi
• Nada Hajime

Classifications

• G06V40/145

  Sensors therefor · CPC title

• G06F21/32 Primary

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

• G06F3/0488 Primary

  using a touch-screen or digitiser, e.g. input of commands through traced gestures · CPC title

• G06K9/00013

  Physics · mapped topic

• G06K2009/00932

  Physics · mapped topic