公开(公告)号：US11516413B2

公开(公告)日：2022-11-29

申请号：US17760916

申请日：2021-07-08

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Petter Östlund ,  Hans Thörnblom

IPC: H04N5/353 ,  H04N5/378 ,  G06V40/13 ,  G06V40/12

Abstract: The present invention relates to an optical biometric sensor (100) comprising: an image sensor (302) comprising an array (301) of photodetectors (304), wherein for acquiring sensing signals, the image sensor is controllable to sequentially start exposure of subsets (306, 308, 309) of photodetectors; and a timing circuitry (310) configured to control the start of exposure of a subset of photodetectors based on a present data transfer capacity on a data transfer bus (312) configured to transfer data indicative of the acquired sensing signals from the optical biometric sensor to a host device (314).

公开(公告)号：US11508180B2

公开(公告)日：2022-11-22

申请号：US17760874

申请日：2021-07-08

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Petter Östlund ,  Hans Thörnblom

IPC: G06V40/13 ,  H04N5/378 ,  G06F13/42

Abstract: The present invention relates to an optical biometric sensor comprising: a read-out circuitry controllable for converting analog sensing signals to digital signals, the analog sensing signals being indicative of an image acquired by an image sensor comprising an array of photodetectors; and a timing circuitry configured to control the read-out circuitry to provide digital signals based on a present data transfer capacity on a data transfer bus configured to transfer data indicative of the digital signals from the optical biometric sensor to a host device.

公开(公告)号：US12112568B2

公开(公告)日：2024-10-08

申请号：US18030399

申请日：2021-10-14

Applicant: FINGERPRINT CARDS ANACATUM IP AB

Inventor： Petter Östlund

IPC: G06V40/13 ,  G02B5/28 ,  G06V10/143 ,  G06V40/12

CPC classification number: G06V40/1394 ,  G02B5/281 ,  G06V10/143 ,  G06V40/13 ,  G06V40/1318 ,  G06V40/1324 ,  G06V40/1382

Abstract: A biometric imaging arrangement configured to acquire an image of an object comprising: an image sensor comprising a photodetector pixel array configured to detect light transmitted from the object for capturing an image, an optical filter assembly comprising at least an optical interference filter, the optical filter assembly being arranged to cover the photodetector pixel array, and the optical filter assembly having an infrared cut-off wavelength to at least partly block infrared light from reaching the photodetector pixel array, the optical filter assembly further having at least a first cut-off wavelength in the visible range of wavelengths, wherein the first cut-off wavelength depends on the angle of incidence of the received light on the optical filter assembly.

公开(公告)号：US20230377366A1

公开(公告)日：2023-11-23

申请号：US18030399

申请日：2021-10-14

Applicant: FINGERPRINT CARDS ANACATUM IP AB

Inventor： Petter Östlund

IPC: G06V40/12 ,  G06V40/13 ,  G06V10/143 ,  G02B5/28

CPC classification number: G06V40/1394 ,  G06V40/13 ,  G06V10/143 ,  G02B5/281

Abstract: A biometric imaging arrangement configured to acquire an image of an object comprising: an image sensor comprising a photodetector pixel array configured to detect light transmitted from the object for capturing an image, an optical filter assembly comprising at least an optical interference filter, the optical filter assembly being arranged to cover the photodetector pixel array, and the optical filter assembly having an infrared cut-off wavelength to at least partly block infrared light from reaching the photodetector pixel array, the optical filter assembly further having at least a first cut-off wavelength in the visible range of wavelengths, wherein the first cut-off wavelength depends on the angle of incidence of the received light on the optical filter assembly.