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公开(公告)号：US20170323138A1
公开(公告)日：2017-11-09
申请号：US15661736
申请日：2017-07-27
Applicant: Fingerprint Cards AB
Inventor： Markus Andersson , Mikael Danielsson
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.
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42.发明申请公开(公告)号：US20170316247A1
公开(公告)日：2017-11-02
申请号：US15654798
申请日：2017-07-20
Applicant: Fingerprint Cards AB
Inventor： Karl LUNDAHL , Hanna NILSSON
IPC: G06K9/00
CPC classification number: G06K9/0002 , G06K9/00 , G06K9/00053 , G06K9/00087
Abstract: The invention relates to a fingerprint sensing device comprising a sensing chip comprising an array of capacitive sensing elements. The sensing device comprises a coating material arranged in a layer on top of the array of sensing elements and comprising a plurality of cavities filled with a dielectric material. The dielectric material comprises reduced graphene oxide. Locations of the cavities correspond to locations of the sensing elements such that a cross-section area of a cavity covers at least a portion of an area of a corresponding sensing element. A dielectric constant of the dielectric material is higher than a dielectric constant of the coating material. The invention also relates to a sensing device where the dielectric coating layer containing reduced graphene oxide comprises trenches corresponding to areas between the sensing pixels filled with a fill material, where the dielectric coating layer has a higher dielectric constant than the fill material.
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公开(公告)号：US09779278B2
公开(公告)日：2017-10-03
申请号：US15063754
申请日：2016-03-08
Applicant: Fingerprint Cards AB
Inventor： Henrik Nilsson
CPC classification number: G06K9/0002 , G06K9/00053 , G06K9/036 , G06K9/3216
Abstract: The present invention relates to an electronic device comprising a capacitive fingerprint sensor having a fingerprint sensing surface forming part of an exterior surface of the electronic device; a protective film arranged on the exterior surface of the electronic device comprising the fingerprint sensing surface; wherein the protective film is arranged to at least partially cover the fingerprint sensing surface; and wherein the protective film comprises an electrically conductive pattern covering the fingerprint sensing surface, the electrically conductive pattern being configured to enable verification of a functionality of the fingerprint sensor. The invention also relates to a method of manufacturing an electronic device comprising a fingerprint sensor, and to a method of verifying a functionality of a fingerprint sensor.
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公开(公告)号：US20170270334A1
公开(公告)日：2017-09-21
申请号：US15444482
申请日：2017-02-28
Applicant: Fingerprint Cards AB
Inventor： Eric Setterberg
CPC classification number: G06K9/0002 , G06K9/00087 , G06K9/00979 , G06K9/52 , G06K9/6277
Abstract: A method for evaluating an individual fingerprint template by using a remote dataset, comprising the steps of capturing a fingerprint representation by a fingerprint reader on a device, extracting significant data from the captured fingerprint representation, thereby creating an individual fingerprint template for the captured fingerprint representation, transmitting the individual fingerprint template from the device to a remote dataset comprising a plurality of fingerprint templates, determining an impostor score distribution for the individual fingerprint template, determining a security threshold for the individual fingerprint template, and transmitting the determined security threshold to the device. The advantage of the invention is that an individual security threshold can be set for a user, which will improve the FAR distribution of a device.
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公开(公告)号：US09734379B2
公开(公告)日：2017-08-15
申请号：US14833968
申请日：2015-08-24
Applicant: FINGERPRINT CARDS AB
Inventor： Mats Tuneld , Hamid Sarvé , Kenneth Jonsson , Stefan Printz , Chao Chen
IPC: G06K9/00
CPC classification number: G06K9/00013 , G06K9/00026 , G06K9/00067 , G06K9/00912
Abstract: Fingerprint enrollment is described. An initial procedure in which the appropriate area of the finger is determined from the size of a user's finger, followed by a guidance procedure where guidance information is provided in a pseudo random manner and further fingerprint data is obtained during the pseudo random guidance. When the appropriate area of the finger has been covered, fingerprint data is used in a calculation of fingerprint enrollment data that can be used in subsequent steps in the enrollment procedure.
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Patent Agency Ranking
公开(公告)号：US09672401B2
公开(公告)日：2017-06-06
申请号：US15172930
申请日：2016-06-03
Applicant: Fingerprint Cards AB
Inventor： Frank Robert Riedijk , Hans Thörnblom
CPC classification number: G06K9/00013 , G06F3/016 , G06F3/0338 , G06F3/041 , G06F3/0416 , G06F3/044 , G06F2203/04105 , G06K9/0002 , H04N5/23241 , H04N5/3765 , H04N5/378
Abstract: A fingerprint sensing system comprises a sensor array with a plurality of sensing structures and read-out circuitry connectable to each of the sensing structures, and power supply circuitry arranged to provide to the read-out circuitry a substantially constant supply voltage being a difference between a high potential and a low potential. The fingerprint sensing system is configured in such a way that the low potential and the high potential are variable while substantially maintaining the supply voltage, and the read-out circuitry is connectable to each of the sensing structures in such a way that a variation in the low potential and the high potential while substantially maintaining the supply voltage results in a change of the charge carried by a sensing structure connected to the read-out circuitry. The change in charge is indicative of a capacitive coupling between the sensing structure and the finger.
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公开(公告)号：US20170098109A1
公开(公告)日：2017-04-06
申请号：US15176622
申请日：2016-06-08
Applicant: Fingerprint Cards AB
Inventor： David Carling , Hans Thörnblom
IPC: G06K9/00
CPC classification number: G06K9/0002 , G06K9/001
Abstract: The present invention relates to a fingerprint sensing device comprising an array of sensing elements; readout circuitry connected to the array of sensing elements; and finger detecting circuitry for detecting if a finger candidate is touching the sensing surface of the fingerprint sensing device. The fingerprint sensing device is controllable between an active state and an inactive state. When the fingerprint sensing device is in the inactive state, the finger detecting circuitry is configured to provide a finger lost signal for indicating when the finger candidate no longer touches the sensing surface of the fingerprint sensing device.
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公开(公告)号：US20170091525A1
公开(公告)日：2017-03-30
申请号：US15347892
申请日：2016-11-10
Applicant: FINGERPRINT CARDS AB
CPC classification number: G06K9/00087 , G06K9/0002 , G06K9/00067 , G06K9/40 , G06K2009/00939 , G06K2209/00 , G06T5/00 , G06T5/002 , G06T2207/10004 , G06T2207/30196
Abstract: The present invention generally relates to a method for removing disturbances in an image captured by a fingerprint sensor, and specifically to reduction of noise in an acquired fingerprint image by incorporating the sensing principle into the applied method for noise reduction, wherein the noise reduced image is used for determining a representation of a fingerprint pattern. Advantages with the invention include enhanced determination of fingerprint patterns from fingerprint images captured using a fingerprint sensor. The invention also relates to a corresponding electronic device and to a computer program product.
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公开(公告)号：US20170091509A1
公开(公告)日：2017-03-30
申请号：US15168671
申请日：2016-05-31
Applicant: Fingerprint Cards AB
Inventor： Frank Robert Riedijk , Klaas-Jan de Lange
IPC: G06K9/00
CPC classification number: G06K9/0002 , G06K9/22
Abstract: The present invention relates to a fingerprint sensing device for sensing a fingerprint pattern of a finger, the fingerprint sensing device comprising at least a first sensing structure and a second sensing structure; and at least a first charge amplifier and a second charge amplifier. Each charge amplifier comprises: a first input; a second input; an output; and at least one amplifier stage between the first and second inputs, and the output. The output is capacitively coupled to the first input. The first input of the first charge amplifier is connected to the first sensing structure; the first input of the second charge amplifier is connected to the second sensing structure; and the output of the first charge amplifier is capacitively coupled to the first input of the second charge amplifier to suppress the common mode component.
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50.发明申请FINGERPRINT SENSING DEVICE WITH HETEROGENEOUS COATING STRUCTURE COMPRISING A MOLD 有权具有包含模具的异质涂层结构的指纹感测装置公开(公告)号：US20160354801A1
公开(公告)日：2016-12-08
申请号：US15138525
申请日：2016-04-26
Applicant: Fingerprint Cards AB
Inventor： Karl LUNDAHL
CPC classification number: G06K9/00053 , G06K9/00
Abstract: The invention relates to a fingerprint sensing device comprising a sensing chip comprising an array of capacitive sensing elements. The sensing device comprises a coating material arranged in a layer on top of the array of sensing elements, the coating material comprising a plurality of cavities filled with a mold material; wherein locations of the cavities correspond to locations of the sensing elements, such that a cross-section area of a cavity covers at least a portion of an area of a corresponding sensing element; and wherein a dielectric constant of the mold material is higher than a dielectric constant of the coating material. The invention also relates to a method for manufacturing such a device.
Abstract translation: 本发明涉及一种指纹感测装置，其包括感测芯片，其包括电容感测元件阵列。 感测装置包括布置在感测元件阵列的顶部上的涂层材料，涂层材料包括填充有模具材料的多个空腔; 其中所述腔的位置对应于所述感测元件的位置，使得空腔的横截面面积覆盖相应感测元件的区域的至少一部分; 并且其中所述模具材料的介电常数高于所述涂层材料的介电常数。 本发明还涉及制造这种装置的方法。
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