公开(公告)号：US20230101088A1

公开(公告)日：2023-03-30

申请号：US17812455

申请日：2022-07-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyoung Hun Been ,  Mi Young Kim ,  Jin Woo Kim ,  Byeong Kyu Jeon

IPC: G06T5/50 ,  G06V40/13

Abstract: A method for restoring an image of a fingerprint sensor is described. The method includes capturing, by the fingerprint sensor, a fake fingerprint image from a fake fingerprint; calculating a phase of the fake fingerprint from the fake fingerprint image; capturing a plurality of target fingerprint images at measurement times by a fingerprint sensor disposed on a rear side of a display panel; applying the calculated phase to each of the acquired target fingerprint images; and combining information from each of the plurality of target fingerprint images to generate a final fingerprint image.

公开(公告)号：US11651580B2

公开(公告)日：2023-05-16

申请号：US17206123

申请日：2021-03-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Soon Gyu Lee ,  Jin A Kang ,  Mi Young Kim ,  Jin Woo Kim ,  Kyoung Hun Been ,  Byeong Kyu Jeon

IPC: G06V40/12 ,  G06T5/00 ,  G06N20/00 ,  G06V40/13 ,  G06V40/50

CPC classification number: G06V40/1365 ,  G06N20/00 ,  G06T5/002 ,  G06V40/1306 ,  G06V40/1318 ,  G06V40/1335 ,  G06V40/50 ,  G06T2207/20081 ,  G06T2207/30168

Abstract: A fingerprint authentication device includes: a sensor unit configured to output a sensing signal by sensing a fingerprint; an image processing unit configured to generate a fingerprint image based on the sensing signal; a storage unit configured to store a template including an enrolled image; and a learning unit configured to generate a first pseudo image and add the first pseudo image to the template.

公开(公告)号：US12217396B2

公开(公告)日：2025-02-04

申请号：US17812455

申请日：2022-07-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyoung Hun Been ,  Mi Young Kim ,  Jin Woo Kim ,  Byeong Kyu Jeon

IPC: G06T5/50 ,  G06V40/13

Abstract: A method for restoring an image of a fingerprint sensor is described. The method includes capturing, by the fingerprint sensor, a fake fingerprint image from a fake fingerprint; calculating a phase of the fake fingerprint from the fake fingerprint image; capturing a plurality of target fingerprint images at measurement times by a fingerprint sensor disposed on a rear side of a display panel; applying the calculated phase to each of the acquired target fingerprint images; and combining information from each of the plurality of target fingerprint images to generate a final fingerprint image.

公开(公告)号：US11686830B2

公开(公告)日：2023-06-27

申请号：US17824241

申请日：2022-05-25

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Mi Young Kim ,  Kyoung Hun Been ,  Byeong Kyu Jeon

IPC: G01S7/52 ,  G06V40/13 ,  G06F21/32 ,  G01S15/89 ,  G06T7/00

CPC classification number: G01S7/52004 ,  G01S15/8906 ,  G06F21/32 ,  G06T7/97 ,  G06V40/1306

Abstract: A method for calculating a reference value of an ultrasonic sensor includes: transmitting a first ultrasonic signal from the ultrasonic sensor toward a first surface of a contact device while an object is positioned on the first surface; generating a plurality of ultrasonic images based on a first ultrasonic echo signal; selecting an ultrasonic image having a highest similarity to a reference image from among the ultrasonic images; storing a first parameter and a second parameter corresponding to a selected ultrasonic image; while the object is not positioned on the first surface, transmitting a second ultrasonic signal based on the first parameter from the ultrasonic sensor toward the first surface; and calculating the reference value of the ultrasonic sensor using the second parameter and a second ultrasonic echo signal.

公开(公告)号：US11544955B2

公开(公告)日：2023-01-03

申请号：US17367165

申请日：2021-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： Kyoung Hun Been ,  Jin Woo Kim ,  Byeong Kyu Jeon ,  Soon Gyu Lee

IPC: G06V40/13 ,  G06V40/12 ,  G06V40/10 ,  G01S15/89

Abstract: An ultrasonic fingerprint sensing method includes: generating a first ultrasonic wave using a first frequency; receiving a first signal generated by reflection of the first ultrasonic wave from each of a ridge and a valley of a fingerprint; generating a first image based on the first signal; comparing the first image with a registered reference image to generate a matching score; and in response to the matching score being less than a threshold value, generating a second image using a second frequency.