US 12,322,211 B2
Electronic device unlocked by sequential fingerprints
Tzung-Min Su, Hsin-Chu County (TW); Yu-Ju Lee, Hsin-Chu County (TW); and Ren-Hau Gu, Hsin-Chu County (TW)
Assigned to PIXART IMAGING INC., Hsin-Chu County (TW)
Filed by PIXART IMAGING INC., Hsin-Chu County (TW)
Filed on Apr. 28, 2023, as Appl. No. 18/308,678.
Prior Publication US 2024/0362952 A1, Oct. 31, 2024
Int. Cl. G06V 40/12 (2022.01); G06F 21/32 (2013.01); G06V 10/70 (2022.01); G06V 40/20 (2022.01)
CPC G06V 40/28 (2022.01) [G06F 21/32 (2013.01); G06V 10/768 (2022.01); G06V 40/1365 (2022.01); G06V 40/1394 (2022.01)] 17 Claims
OG exemplary drawing
 
11. An electronic device, comprising:
a touch pad, configured to respectively output fingerprint data within sequential multiple time intervals using a predetermined detection frequency;
an operation system, embedded in the electronic device and configured to unlock the electronic device; and
a processor, configured to
recognize a fingerprint and a pressure value of each time interval according to the fingerprint data, and
control the operation system to unlock the electronic device upon a sequence of multiple recognized fingerprints of the multiple time intervals matching a predetermined sequence and multiple recognized pressure values matching a predetermined pressure variation pattern, wherein
the processor is further
embedded with a machine learning algorithm, which is configured to construct a category model within a predetermined learning period according to at least one of a finger area, a pressure range and a screen region during each unlocking operation, and
configured to control the operation system to unlock the electronic device according to the category model in conjunction with the sequence of the multiple recognized fingerprints and a pressure variation pattern of the multiple recognized pressure values.