US 12,014,566 B2
Fingerprint authentication device and calibration device and method thereof
Kee Yong Kim, Yongin-si (KR); Jung Hun Sin, Yongin-si (KR); Young Sik Kim, Yongin-si (KR); Tae Joon Kim, Yongin-si (KR); Hee Woong Park, Yongin-si (KR); and Sang Wook Yoo, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-Si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Apr. 7, 2023, as Appl. No. 18/132,262.
Claims priority of application No. 10-2022-0043457 (KR), filed on Apr. 7, 2022.
Prior Publication US 2023/0326228 A1, Oct. 12, 2023
Int. Cl. G06V 40/13 (2022.01); G06V 40/12 (2022.01)
CPC G06V 40/13 (2022.01) [G06V 40/1347 (2022.01); G06V 40/1365 (2022.01)] 18 Claims
OG exemplary drawing
 
1. A fingerprint authentication device, comprising:
a biometric sensor that senses biometric information to generate a sensing signal;
an image processor that extracts a calibration function based on calibration data and generates a fingerprint image based on the calibration function and the sensing signal; and
an authenticator that performs fingerprint authentication by comparing the fingerprint image and registered fingerprint information,
wherein the calibration data includes information on a calibration coefficient of the calibration function, and
wherein the calibration function includes a first calibration function having a first gain value with respect to a distance along a first direction of the fingerprint image and a second calibration function having a second gain value with respect to a distance along a second direction different from the first direction of the fingerprint image.