FINGERPRINT RECOGNITION METHOD AND ELECTRONIC DEVICE THEREOF

• US 20140294259A1
• Filed: 12/13/2013
• Published: 10/02/2014
• Est. Priority Date: 03/26/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LEE, Heon-Tak
• Granted Patent: US 9,311,519 B2
• Time in Patent Office: Days
• US Class Current: 382/124
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06V 10/987 with the intervention of an operator
• CPC Class Codes: G06V 40/13 Sensors therefor

Abstract

A method and apparatus for recognizing a fingerprint in an electronic device includes recognizing a fingerprint that is input through a touch-based device, determining whether the recognized fingerprint is a white image, and when the recognized image is determined to be a white image, displaying on a display screen a request for a fingerprint retouch.

Claims

1. A method for fingerprint authentication in an electronic device, comprising:

recognizing a fingerprint in responsive to a touch input;

detecting whether the recognized fingerprint is a white image; and

when the recognized fingerprint is detected to be the white image, displaying a request for a fingerprint re-touch on a touch display.

2. The method of claim 1, further comprising:

when the recognized fingerprint is not the white image, detecting whether the recognized fingerprint is matched with a pre-stored fingerprint.

3. The method of claim 1, wherein the request for fingerprint re-touch includes at least one of:

a message displayed on the touch display, and an audio cue played through a speaker.

4. The method of claim 3, wherein a content of the request for the fingerprint re-touch includes an instruction for a user to remove contaminants from a finger and from a surface of the touch display, and to reperform a touch with the finger on the touch display.

5. The method of claim 1, wherein the white image is an image in which at least a part of the recognized fingerprint is displayed in white due to a contaminant.

6. The method of claim 5, further comprising measuring an amount of the recognized fingerprint that is output in white within a predefined threshold range from a center of the recognized fingerprint.

7. The method of claim 1, wherein recognition of the recognized fingerprint is implemented using at least one of optical recognition, capacitive recognition, and radio frequency recognition.

8. The method of claim 1, further comprising:

increasing a count of a number of times a fingerprint authentication process failed when the authentication process fails; and

maintaining a current total of the count when the recognized image is determined to be the white image.

9. An electronic device comprising:

a touch display;

a fingerprint recognition device configured for recognize a fingerprint in responsive to a touch input on the touch display;

at least one memory; and

a processor configured for

detecting whether the recognized fingerprint is a white image, and

displaying on the touch display a request for a fingerprint re-touch when the recognized fingerprint is detected to be the white image.

10. The electronic device of claim 9, wherein the processor determines whether the recognized fingerprint matches with a pre-stored fingerprint when the recognized fingerprint is not the white image.

11. The electronic device of claim 9, wherein the request for fingerprint re-touch includes at least one of:

a message displayed on the touch display, and an audio cue played through a speaker.

12. The electronic device of claim 11, wherein a content of the request for fingerprint re-touch includes an instruction for a user to remove contaminants from a finger and from a surface of the touch display, and to reperform a touch with the finger on the touch display.

13. The electronic device of claim 9, wherein the white image is an image in which at least a part of the recognized fingerprint is output in white due to a contaminant.

14. The electronic device of claim 13, further comprising measuring an amount of the recognized fingerprint that is output in white within a predefined threshold range from a center of the recognized fingerprint.

15. The electronic device of claim 9, wherein fingerprint recognition is implemented using at least one method of optical recognition, capacitive recognition, and radio frequency recognition.

16. The electronic device of claim 9, further comprising:

increasing a count of a number of times a fingerprint authentication process has been failed when authentication fails; and

maintaining a current total of the count when the recognized image is determined to be the white image.

17. A method for recognizing a fingerprint in an electronic device, comprising:

recognizing a fingerprint in responsive to a touch input;

detecting whether an area of the recognized fingerprint is smaller than a reference value; and

responsive to the area being smaller than the reference value, displaying on a display screen a request for a fingerprint re-touch.

18. The method of claim 17, further comprising, when the area is equal to or larger than the reference value, determining whether the recognized fingerprint matches with a pre-stored fingerprint.

19. An electronic device comprising:

a touch display;

a fingerprint recognition device configured for recognizing a fingerprint in responsive to a touch input on the touch display;

at least one memory; and

a processor configured for;

detecting whether an area of the recognized fingerprint is smaller than a reference value, and

when the area is smaller than the reference value, displaying on the touch display a request for fingerprint re-touch.

20. A method for recognizing a fingerprint in an electronic device, comprising:

recognizing a fingerprint in responsive to a touch input;

detecting whether the recognized fingerprint matches a pre-stored fingerprint;

when the recognized fingerprint does not match with the pre-stored fingerprint, detecting whether the recognized fingerprint is a white image; and

when the recognized image is detected to be the white image, displaying on a display screen a request for a fingerprint re-touch, and when the recognized image is detected not to be the white image, detecting that fingerprint authentication has failed.