Method and system for calibration of a fingerprint sensing device

    公开(公告)号:US10108840B2

    公开(公告)日:2018-10-23

    申请号:US15661736

    申请日:2017-07-27

    Abstract: There is provided a method of initiating a calibration operation of a fingerprint sensing device comprising an array of sensing elements for sensing a fingerprint pattern, the method comprising acquiring information indicative of a change of an environmental parameter influencing the operation of the fingerprint sensing device; and if the change is larger than a predetermined threshold value, performing a calibration operation of the fingerprint sensing device. There is also provided a method of initiating a calibration operation of a fingerprint sensing device comprising an array of sensing elements for sensing a fingerprint pattern, the method comprising: receiving information indicative of an event in a device in which the fingerprint sensing device is arranged; if the event is one of a group of predetermined events, performing a calibration operation of the fingerprint sensing device.

    Fingerprint sensing and body area network communication system

    公开(公告)号:US10108838B2

    公开(公告)日:2018-10-23

    申请号:US15590393

    申请日:2017-05-09

    Abstract: The present invention relates to a combined fingerprint sensing and body area network communication system for communication with an electronic unit using the body of a user as communication medium, comprising: a sensing arrangement and a body area network communication circuitry. The system is controllable between: a fingerprint sensing state, in which a first signal corresponding to the finger potential is provided to a connection electrode and a readout circuitry is controlled to provide sensing signals indicative of the capacitive coupling between each sensing structure and the user's finger; and a body area network communication state in which a second signal is provided to the connection electrode by a first of the electronic unit and the body area network communication circuitry to the other one of the electronic unit and the body area network communication circuitry.

    ELECTRONIC DEVICE WITH FINGERPRINT SENSING SYSTEM AND CONDUCTING HOUSING
    3.
    发明申请
    ELECTRONIC DEVICE WITH FINGERPRINT SENSING SYSTEM AND CONDUCTING HOUSING 有权
    具有指纹感测系统和导电壳体的电子装置

    公开(公告)号:US20150347807A1

    公开(公告)日:2015-12-03

    申请号:US14718776

    申请日:2015-05-21

    CPC classification number: G06K9/0002 G06K9/0008 G06K9/001

    Abstract: The present invention relates to an electronic device comprising a fingerprint sensing system including a plurality of sensing elements, each being configured to capacitively couple to a finger arranged adjacent to the sensing element and to provide a sensing signal indicative of a response to a time-varying finger excitation signal provided to the finger; and an electrically conducting housing at least partly enclosing an interior of the electronic device. The electronic device further comprises housing connection circuitry connected to the electrically conducting housing, and arranged and configured to at least intermittently allow a potential of the electrically conducting housing to follow the finger excitation signal. Hereby the housing can be used to enhance the functionality of the fingerprint sensing system.

    Abstract translation: 电子设备技术领域本发明涉及一种电子设备,其包括指纹感测系统,其包括多个感测元件,每个感测元件被配置为电容耦合到与感测元件相邻布置的手指,并提供指示对时变的响应的感测信号 手指激励信号提供给手指; 以及至少部分地包围所述电子设备的内部的导电外壳。 电子设备还包括连接到导电壳体的壳体连接电路,并且被布置和配置为至少间歇地允许导电壳体的电位跟随手指激励信号。 因此,壳体可用于增强指纹感测系统的功能。

    Method for transitioning a device controller of an electronic device

    公开(公告)号:US11176234B2

    公开(公告)日:2021-11-16

    申请号:US16605416

    申请日:2018-04-17

    Abstract: The present invention relates to a method for transitioning a device controller comprised with an electronic device from an at least partly inactive mode to an at least partly active mode, wherein the method comprises: determining the area portion of a finger detecting structure being touched by an object; determining a force applied on the fingerprint sensing device. When the area portion of the finger detecting structure being touched by the object exceeds a predetermined threshold area portion, and the force exceeds a predetermined threshold force value, transitioning, using the pre-processing module, the device controller from the at least partly inactive mode to the at least partly active mode. The invention also relates to such an electronic device.

    Electronic device with fingerprint sensing system and conducting housing
    5.
    发明授权
    Electronic device with fingerprint sensing system and conducting housing 有权
    具有指纹感测系统和导电壳体的电子设备

    公开(公告)号:US09489559B2

    公开(公告)日:2016-11-08

    申请号:US14718776

    申请日:2015-05-21

    CPC classification number: G06K9/0002 G06K9/0008 G06K9/001

    Abstract: The present invention relates to an electronic device comprising a fingerprint sensing system including a plurality of sensing elements, each being configured to capacitively couple to a finger arranged adjacent to the sensing element and to provide a sensing signal indicative of a response to a time-varying finger excitation signal provided to the finger; and an electrically conducting housing at least partly enclosing an interior of the electronic device. The electronic device further comprises housing connection circuitry connected to the electrically conducting housing, and arranged and configured to at least intermittently allow a potential of the electrically conducting housing to follow the finger excitation signal. Hereby the housing can be used to enhance the functionality of the fingerprint sensing system.

    Abstract translation: 电子设备技术领域本发明涉及一种电子设备,其包括指纹感测系统,其包括多个感测元件,每个感测元件被配置为电容耦合到与感测元件相邻布置的手指,并提供指示对时变的响应的感测信号 手指激励信号提供给手指; 以及至少部分地包围所述电子设备的内部的导电外壳。 电子设备还包括连接到导电壳体的壳体连接电路,并且被布置和配置为至少间歇地允许导电壳体的电位跟随手指激励信号。 因此,壳体可用于增强指纹感测系统的功能。

    FINGERPRINT SENSING AND BODY AREA NETWORK COMMUNICATION SYSTEM

    公开(公告)号:US20180005001A1

    公开(公告)日:2018-01-04

    申请号:US15590393

    申请日:2017-05-09

    CPC classification number: G06K9/0002 G01D5/24 H04B13/005 H04L63/0861

    Abstract: The present invention relates to a combined fingerprint sensing and body area network communication system for communication with an electronic unit using the body of a user as communication medium, comprising: a sensing arrangement and a body area network communication circuitry. The system is controllable between: a fingerprint sensing state, in which a first signal corresponding to the finger potential is provided to a connection electrode and a readout circuitry is controlled to provide sensing signals indicative of the capacitive coupling between each sensing structure and the user's finger; and a body area network communication state in which a second signal is provided to the connection electrode by a first of the electronic unit and the body area network communication circuitry to the other one of the electronic unit and the body area network communication circuitry.

    FINGERPRINT SENSOR WITH FORCE SENSOR

    公开(公告)号:US20170344782A1

    公开(公告)日:2017-11-30

    申请号:US15596254

    申请日:2017-05-16

    Inventor: Markus Andersson

    CPC classification number: G06K9/0002 G06F21/32 G06K9/00087

    Abstract: The present invention generally relates to a method for authenticating a user of an electronic device comprising a fingerprint sensor and a force sensor, the method comprising: retrieving a stored plurality of fingerprint enrolment templates comprising an enrolment representation of at least part of a user's finger and a corresponding enrolment force parameter, acquiring a first verification image of an object and determining a first verification representation, determining a first verification force parameter, performing a fingerprint authentication procedure based on the first verification template and the plurality of fingerprint enrolment templates, wherein when the first verification representation and the first verification force parameter comprised in the first verification template matches each of the enrolment representation and the enrolment force parameter comprised in the same fingerprint enrolment template providing a signal indicating successful authentication of the user. The invention also relates to a fingerprint sensing system and an electronic device.

    METHOD AND SYSTEM FOR CALIBRATION OF A FINGERPRINT SENSING DEVICE

    公开(公告)号:US20170323137A1

    公开(公告)日:2017-11-09

    申请号:US15661680

    申请日:2017-07-27

    CPC classification number: G06K9/0002 G06K9/209

    Abstract: There is provided a method of initiating a calibration operation of a fingerprint sensing device comprising an array of sensing elements for sensing a fingerprint pattern, the method comprising acquiring information indicative of a change of an environmental parameter influencing the operation of the fingerprint sensing device; and if the change is larger than a predetermined threshold value, performing a calibration operation of the fingerprint sensing device. There is also provided a method of initiating a calibration operation of a fingerprint sensing device comprising an array of sensing elements for sensing a fingerprint pattern, the method comprising: receiving information indicative of an event in a device in which the fingerprint sensing device is arranged; if the event is one of a group of predetermined events, performing a calibration operation of the fingerprint sensing device.

    Method for fingerprint authentication using force value

    公开(公告)号:US11216546B2

    公开(公告)日:2022-01-04

    申请号:US16605073

    申请日:2018-04-18

    Abstract: The present invention generally relates to a method for authenticating a user of an electronic device comprising a fingerprint sensor. The method comprises acquiring a sequence of verification images. Estimating, based on the images a first and a second verification force value indicative of a force applied by the object on the fingerprint sensor when the verification images were acquired. A verification image representation and a verification force value forms a verification template for each of the first and second images and forces. Matching the first and second verification template with at least one of a plurality of stored fingerprint enrolment templates in a respective first and second matching step. When the first and second matching steps each results in a positive match between the respective verification template and a respective one of the plurality of stored fingerprint enrolment templates, providing a signal indicating successful authentication of the user.

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