US 11,727,711 B2
Fingerprint sensing system and method using thresholding
Hans Thörnblom, Hålta (SE); Daniel Andersson, Gothenburg (SE); Frank Riedijk, Delft (NL); Johannes Arvidsson, Gothenburg (SE); and Rasmus Söderström Olsson, Gothenburg (SE)
Assigned to FINGERPRINT CARDS ANACATUM IP AB, Gothenburg (SE)
Appl. No. 18/10,006
Filed by FINGERPRINT CARDS ANACATUM IP AB, Gothenburg (SE)
PCT Filed Jun. 23, 2021, PCT No. PCT/SE2021/050623
§ 371(c)(1), (2) Date Dec. 13, 2022,
PCT Pub. No. WO2022/005369, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 2050839-6 (SE), filed on Jul. 3, 2020.
Prior Publication US 2023/0230410 A1, Jul. 20, 2023
Int. Cl. G06V 40/13 (2022.01); G06V 10/10 (2022.01)
CPC G06V 40/13 (2022.01) [G06V 10/17 (2022.01)] 15 Claims
OG exemplary drawing
 
1. A fingerprint sensing system for sensing a finger surface of a finger, comprising:
an array of sensing elements arranged under a sensing surface, each sensing element in the array of sensing elements being configured to sense a property indicative of a distance between the sensing element and the finger surface; and
read-out circuitry coupled to the array of sensing elements and configured to provide, for each sensing element in the array of sensing elements, a timing indication indicative of a time when a value of the property sensed by the sensing element reached a predefined threshold value.