Method and device for recognizing biometric information

Patent metadata

Field	Value
Publication number	US-10679053-B2
Application number	US-201916377475-A
Country	US
Kind code	B2
Filing date	Apr 8, 2019
Priority date	Jul 9, 2014
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

Disclosed is a method by which an electronic device recognizes biometric information, comprising the steps of: sensing a direction of an electronic device; and recognizing biometric information by using a parameter corresponding to the sensed direction.

First claim

What is claimed is:

1. A method of recognizing biometric information on at least part of a user's face by an electronic device, the method comprising:
storing first biometric information on at least part of the user's face for each of at least two direction of the electronic device;
displaying a screen that requests second biometric information on at least part of the user's face;
obtaining the second biometric information on at least part of the user's face via an image sensor in response to displaying the screen that requests the second biometric information; and
performing authentication for the user based on a comparison of the obtained second biometric information and the stored first biometric information, wherein the performing of the authentication further comprises identifying an orientation of the electronic device recognized when the second biometric information is obtained, and reading out the first biometric information corresponding to the recognized orientation.

2. The method as claimed in claim 1 , wherein the at least two direction includes horizontal direction and vertical direction.

3. The method as claimed in claim 1 , further comprising:
performing the authentication using a parameter corresponding to the orientation of the electronic device, the parameter being related to an infrared light emission or the image sensor.

4. The method as claimed in claim 1 , wherein the stored first biometric information corresponds to a plurality of directions of the electronic device, and the obtained second biometric information corresponds to a single direction of the electronic device.

5. The method as claimed in claim 1 , wherein the stored first biometric information corresponds to the orientation of the electronic device, and the obtained second biometric information corresponds to another orientation of the electronic device.

6. The method as claimed in claim 1 , wherein the stored first biometric information and the obtained second biometric information correspond to same direction of the electronic device, respectively.

7. The method as claimed in claim 3 , further comprising:
controlling the parameter, wherein the parameter includes at least one of a length, an intensity, and a period of a infrared light emission pulse, and a sensitivity of the image sensor.

8. The method as claimed in claim 7 , wherein, when the orientation of the electronic device is a horizontal direction, the controlling of the parameter comprises at least one out of:
controlling the length of the infrared light emission pulse corresponding to the horizontal direction to be longer than the length of the infrared light emission pulse corresponding to a vertical direction; and
controlling the intensity of the infrared light emission pulse corresponding to the horizontal direction to be lower than the intensity of the infrared light emission pulse corresponding to the vertical direction.

9. The method as claimed in claim 7 , wherein, when the orientation of the electronic device is a horizontal direction, the controlling of the parameter comprises:
controlling the sensitivity of the image sensor corresponding to the horizontal direction to be higher than the sensitivity of the image sensor corresponding to a vertical direction.

10. The method as claimed in claim 7 , wherein, when the orientation of the electronic device is a vertical direction, the controlling of the parameter comprises at least one out of:
controlling the length of the infrared light emission pulse corresponding to the vertical direction to be shorter than the length of the infrared light emission pulse corresponding to a horizontal direction; and
controlling the intensity of the infrared light emission pulse corresponding to the vertical direction to be higher than the intensity of the infrared light emission pulse corresponding to the horizontal direction.

11. The method as claimed in claim 7 , wherein, when the orientation of the electronic device is a vertical direction, the controlling of the parameter comprises:
controlling the sensitivity of the image sensor corresponding to the vertical direction to be lower than the sensitivity of the image sensor corresponding to a horizontal direction.

12. The method as claimed in claim 1 , further comprising:
mapping information associated with each direction of the electronic device and the first biometric information for each direction, and storing the information.

13. The method as claimed in claim 1 , the performing authentication for the user further comprises:
recognizing the second biometric information through the displayed screen;
and
executing a function based on the comparison between the obtained second biometric information and the read first biometric information.

14. The method as claimed in claim 1 , wherein, when a recognition rate with respect to the obtained second biometric information is less than or equal to a threshold value, the method further comprises:
outputting a message that requests changing the orientation of the electronic device;
re-recognizing the second biometric information on at least part of the user's face in the changed orientation; and
combining the recognized second biometric information and the re-recognized second biometric information, and storing the combined information.

15. The method as claimed in claim 14 , wherein the recognition rate is a ratio of an area that the electronic device is capable of recognizing from a photographed face to an entire area of recognized second biometric information.

16. An electronic device that recognizes biometric information on at least part of a user's face, the electronic device comprising:
a memory;
a display; and
a processor configured to:
control the memory to store first biometric information on at least part of the user's face for each of at least two direction of the electronic device;
control the display to display a screen that requests second biometric information on at least part of the user's face;
obtain the second biometric information on at least part of the user's face in response to displaying the screen that requests the second biometric information; and
perform authentication for the user based on a comparison of the obtained second biometric information and the stored first biometric information, wherein the performing of the authentication further comprises identifying an orientation of the electronic device recognized when the second biometric information is obtained, and reading out the first biometric information corresponding to the recognized orientation.

17. The electronic device as claimed in claim 16 , wherein at least two direction includes horizontal direction and vertical direction.

18. The electronic device as claimed in claim 16 , wherein the processor further configured to:
perform the authentication using a parameter corresponding to the orientation of the electronic device, the parameter being related to an infrared light emission or an image sensor.

19. The electronic device as claimed in claim 16 , wherein the stored first biometric information corresponds to a plurality of directions of the electronic device, and the obtained second biometric information corresponds to a single direction of the electronic device.

20. The electronic device as claimed in claim 16 , wherein the stored first biometric information corresponds to the orientation of the electronic device, and the obtained second biometric information corresponds to another orientation of the electronic d

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Moon-Soo
• Son Kwang-Sub
• Lee Ki-Huk
• Jeon Bo-Seul
• Han Young-Eun

Classifications

• G06K9/00597

  Physics · mapped topic

• G06K9/00

  Physics · mapped topic

• G06K9/62

  Physics · mapped topic

• H04N5/23219

  Electricity · mapped topic

• G06K9/00885

  Physics · mapped topic