公开(公告)号：US11216640B2

公开(公告)日：2022-01-04

申请号：US15439501

申请日：2017-02-22

Applicant: Fingerprint Cards AB

Inventor： Markus Andersson ,  Eric Setterberg ,  Hans Thörnblom

IPC: G06K9/00 ,  G06F21/32

Abstract: The present invention generally 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, the electronic device further comprising a pre-processing module and a fingerprint sensor configured to acquire image data. The invention also relates to a corresponding electronic device and to a computer program product.

公开(公告)号：US10586089B2

公开(公告)日：2020-03-10

申请号：US15359014

申请日：2016-11-22

Applicant: Fingerprint Cards AB

Inventor： Eric Setterberg ,  Hans Thörnblom

IPC: G06K9/00

Abstract: The present invention generally relates to a method forming a fingerprint image using a fingerprint sensing system, and specifically the formation of an improved fingerprint image by combining fingerprint image data from a plurality of subsequently acquired images of a finger. The invention also relates to a corresponding fingerprint sensing system and to a computer program product.

公开(公告)号：US09904841B2

公开(公告)日：2018-02-27

申请号：US15041656

申请日：2016-02-11

Applicant: Fingerprint Cards AB

Inventor： Hans Thörnblom ,  Eric Setterberg

IPC: G06K9/00 ,  G06F3/038 ,  G06F3/0354

CPC classification number: G06K9/00087 ,  G06F3/03547 ,  G06F3/0383 ,  G06F2203/0338 ,  G06K9/00006

Abstract: The present invention relates to a method of estimating a finger movement direction of a finger, comprising the steps of: a) acquiring a reference fingerprint image; b) acquiring at least one candidate fingerprint image at each acquisition time in a time sequence of acquisition times; c) determining, for each of the acquisition times, a match parameter value for each of a plurality of candidate finger movement directions, the match parameter value being indicative of a correlation between a reference fingerprint image portion and a candidate fingerprint image portion corresponding to displacement in the candidate finger movement direction; d) determining, for each of the candidate finger movement directions, a local extremum match parameter value indicating a maximum correlation for the time sequence of acquisition times; and e) estimating the finger movement based on an evaluation of the determined local extremum match parameters.

公开(公告)号：US20170330014A1

公开(公告)日：2017-11-16

申请号：US15591601

申请日：2017-05-10

Applicant: Fingerprint Cards AB

Inventor： Fredrik Ramberg ,  Hans Thörnblom

IPC: G06K9/00

CPC classification number: G06K9/0002

Abstract: A capacitive fingerprint sensing device and method therein for noise detection are disclosed. The fingerprint sensing device comprises a plurality of sensing elements, each having a sensing structure and configured to sense a capacitive coupling between the sensing structure and a finger. The fingerprint sensing device further comprises sensing circuitry configured to provide a sensing signal indicative of the capacitive coupling between the finger and the sensing structures and timing circuitry configured to control a timing of a drive signal. The fingerprint sensing device is controllable to operate in a noise-detection mode and in a fingerprint mode. When in the noise-detection mode, the fingerprint sensing device is configured to control the timing circuitry such that a drive signal is provided. The fingerprint sensing device repeatedly senses a capacitive coupling between the finger and at least one sensing structure and provides a time-dependent sensing signal by means of said sensing circuitry.

公开(公告)号：US20170032165A1

公开(公告)日：2017-02-02

申请号：US15188473

申请日：2016-06-21

Applicant: Fingerprint Cards AB

Inventor： Morten Hansen ,  Fredrik Ramberg ,  Hans Thörnblom

IPC: G06K9/00

CPC classification number: G06K9/0002 ,  G06K9/00067

Abstract: An apparatus and a computer-implemented method of acquiring a fingerprint image from a fingerprint sensor with an array of sensor elements spanning a sensing area, comprising: monitoring groups of sensor elements located at group-wise spaced apart positions in the array of sensor elements, to determine a touch event occurring on the array of sensor elements; from the array of sensor elements, acquiring, at respective points in time, fingerprint sub-images which are confined in size to a subarea of the sensing area; as the fingerprint sub-images are acquired, computing values of a statistical indicator for the fingerprint sub-images; and acquiring a full fingerprint image when a predefined criterion indicates that the values of the statistical indicator has reached or is about to reach a stable state.

Abstract translation: 一种从具有跨越感测区域的传感器元件的阵列的指纹传感器获取指纹图像的装置和计算机实现的方法，包括：监测位于所述传感器元件阵列中的分组位置的传感器元件的组， 以确定在传感器元件阵列上发生的触摸事件; 从传感器元件的阵列，在各个时间点获取被限制在感测区域的子区域上的指纹子图像; 作为获取指纹子图像，计算指纹子图像的统计指标值; 并且当预定标准指示统计指示符的值已经达到或将要达到稳定状态时获取完整的指纹图像。

公开(公告)号：US20160350574A1

公开(公告)日：2016-12-01

申请号：US15158749

申请日：2016-05-19

Applicant: FINGERPRINT CARDS AB

Inventor： Sebastian Weber ,  Hans Thörnblom

IPC: G06K9/00 ,  G06T11/00

CPC classification number: G06K9/00026

Abstract: The present invention generally relates to a method for forming a fingerprint using a fingerprint sensing system, and specifically to the possibility of allowing the formation of a fingerprint when only separated portions of the fingerprint is available. The invention also relates to the corresponding fingerprint sensing system and to a computer program product.

Abstract translation: 本发明一般涉及一种使用指纹感测系统形成指纹的方法，具体涉及当只有指纹的分离部分可用时允许形成指纹的可能性。 本发明还涉及相应的指纹感测系统和计算机程序产品。

公开(公告)号：US20160180146A1

公开(公告)日：2016-06-23

申请号：US14951056

申请日：2015-11-24

Applicant: FINGERPRINT CARDS AB

Inventor： Eric Setterberg ,  Hamid Sarve ,  Hans Thörnblom ,  Kenneth Jonsson

IPC: G06K9/00 ,  G06F3/044

CPC classification number: G06K9/00087 ,  G06F1/1684 ,  G06F3/044 ,  G06K9/0002 ,  G06K9/00067

Abstract: A method of authenticating a candidate fingerprint by means of an electronic device comprising a touch sensor; and a fingerprint sensor. The method comprises the steps of: acquiring at least one touch sensor signal indicative of a sub-area of the touch sensor being touched by the candidate finger; acquiring at least one fingerprint image of the candidate fingerprint; retrieving a stored enrollment representation of the enrolled fingerprint of the enrolled finger; determining an authentication representation of the candidate fingerprint based on the fingerprint image; and determining an authentication result based on the authentication representation, the stored enrollment representation, and the at least one touch sensor signal.

Abstract translation: 一种通过包括触摸传感器的电子设备认证候选指纹的方法; 和指纹传感器。 该方法包括以下步骤：获取指示由候选手指触摸的触摸传感器的子区域的至少一个触摸传感器信号; 获取候选指纹的至少一​​个指纹图像; 检索所登记的手指的登记的指纹的存储的登记表示; 基于指纹图像确定候选指纹的认证表示; 以及基于所述认证表示，所存储的登记表示和所述至少一个触摸传感器信号来确定认证结果。

公开(公告)号：US11501554B2

公开(公告)日：2022-11-15

申请号：US17467633

申请日：2021-09-07

Applicant: Fingerprint Cards AB

Inventor： Frank Riedijk ,  David Carling ,  Hans Thörnblom ,  Wouter Brevet

IPC: G06V40/13 ,  G06F3/044

Abstract: A fingerprint sensor comprising a plurality of electrically conductive sensing structures arranged in a sensing plane for capacitively sensing a fingerprint of a finger; and measurement circuitry coupled to the plurality of electrically conductive sensing structures for providing measurement signals indicative of a capacitive coupling between each sensing structure in the plurality of electrically conductive sensing structures and the finger, wherein the measurement circuitry is arranged to: provide, using a first measurement circuitry configuration, a first set of measurement signals from a first set of sensing structures; and provide, using a second measurement circuitry configuration different from the first measurement circuitry configuration, a second set of measurement signals from a second set of sensing structures.

公开(公告)号：US10121050B2

公开(公告)日：2018-11-06

申请号：US15728633

申请日：2017-10-10

Applicant: FINGERPRINT CARDS AB

Inventor： Sebastian Weber ,  Hans Thörnblom

IPC: G06K9/00

Abstract: The present invention generally relates to a method for forming a fingerprint using a fingerprint sensing system, and specifically to the possibility of allowing the formation of a fingerprint when only separated portions of the fingerprint is available. The invention also relates to the corresponding fingerprint sensing system and to a computer program product.

公开(公告)号：US10102412B2

公开(公告)日：2018-10-16

申请号：US15623800

申请日：2017-06-15

Applicant: Fingerprint Cards AB

Inventor： Frank Riedijk ,  Hans Thörnblom

IPC: G06K9/00

Abstract: A method of determining a physical property of a finger using a sensor comprising a two-dimensional measuring arrangement including a plurality of measuring elements, each defining a measuring element position in the measuring arrangement, and each comprising a finger electrode spaced apart from the finger by a dielectric structure. For each measuring element position, the method comprises the steps of performing a first sensing operation using a first capacitive configuration, acquiring a first measurement value for the first capacitive configuration, performing a second sensing operation using a second capacitive configuration, acquiring a second measurement value for the second capacitive configuration. The physical property of the finger is determined based on the first and second measurement values for each measuring element position.