US 12,456,324 B2
Electronic device including a plurality of optical fingerprint sensors, method for acquiring and authenticating fingerprint information in the same
Jinho Kim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 17, 2022, as Appl. No. 17/967,355.
Application 17/967,355 is a continuation of application No. PCT/KR2022/014192, filed on Sep. 22, 2022.
Claims priority of application No. 10-2021-0135866 (KR), filed on Oct. 13, 2021.
Prior Publication US 2023/0114698 A1, Apr. 13, 2023
Int. Cl. G06V 40/00 (2022.01)
CPC G06V 40/00 (2022.01) 18 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a display;
a first fingerprint sensor disposed at a lower end of the display and comprising a first aperture configured to filter light with a first component;
a second fingerprint sensor having a second sensing area at least partially overlapping a first sensing area of the first fingerprint sensor, the second fingerprint sensor comprising a second aperture configured to filter light with a second component complementary to the first component;
memory, comprising one or more storage media, storing instructions; and
one or more processors communicatively to the display, the first fingerprint sensor, the second fingerprint sensor, and the memory,
wherein the instructions which, when executed by the one or more processors individually or collectively, cause the electronic device to:
acquire, through the first fingerprint sensor, a first fingerprint image corresponding to an external object requesting fingerprint authentication,
acquire, through the second fingerprint sensor, a second fingerprint image corresponding to the external object,
produce a phase image based on a differential component of an area in which the first fingerprint image and the second fingerprint image overlap,
identify, through the phase image, whether the external object is a stereoscopic pattern having a three-dimensional shape,
identify whether at least one of the first fingerprint image or the second fingerprint image matches with registered user fingerprint authentication data, and
based on the external object being the stereoscopic pattern and the registered user fingerprint authentication data matching with the at least one of the first fingerprint image or the second fingerprint image, succeed in the fingerprint authentication for the external object,
wherein the first aperture passes light through a hole area having a first shape and blocks light in other areas, and
wherein the second aperture passes light through a hole area having a second shape reversely symmetrical to the first shape and blocks light in other areas.