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公开(公告)号：US20200097694A1
公开(公告)日：2020-03-26
申请号：US16621302
申请日：2018-06-11
Applicant: FINGERPRINT CARDS AB
Inventor： Karl LUNDAHL
IPC: G06K9/00 , H01L21/48 , H01L21/56 , H01L21/683 , H01L23/31 , H01L23/538 , H01L23/00 , G06K19/077
Abstract: There is provided a fingerprint sensor module comprising a fingerprint sensor device comprising a sensing array and at least one connection pad for electrically connecting the fingerprint sensor device to external circuitry, the sensing array and connection pad being located on a first side of the fingerprint sensing device; at least one electrically conductive via connection arranged adjacent to the fingerprint sensor device and in electrical contact with the connection pad via at least one conductive trace located in the same plane as the connection pad; a mold layer arranged to cover a backside of the fingerprint sensor device and to fill a volume between the fingerprint sensor device and the via connection, wherein an end portion of the via connection is exposed for connecting the fingerprint sensor module to external circuitry. There is also provided a method for manufacturing such a fingerprint sensor module.
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公开(公告)号：US20200074137A1
公开(公告)日：2020-03-05
申请号：US16365804
申请日：2019-03-27
Applicant: Fingerprint Cards AB
Inventor： René NILSSON , Hans MARTINSSON
Abstract: The invention relates to an optical biometric imaging device configured to capture an image of an object in contact with an outer surface of the biometric imaging device, the biometric imaging device comprising: an image sensor comprising a photodetector pixel array; a transparent substrate arranged to cover the image sensor; a transmission mask arranged to cover the transparent substrate, wherein the transmission mask comprises a plurality of openings, the openings forming a coded aperture configured to project a coded image of an object in contact with the outer surface of the imaging device onto the image sensor; and image sensor circuitry configured to capture an image corresponding to the coded image projected onto the image sensor.
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公开(公告)号：US20190238328A1
公开(公告)日：2019-08-01
申请号：US16381483
申请日：2019-04-11
Applicant: Fingerprint Cards AB
Inventor： Christian GEHRMANN , Steven POPE
Abstract: A method performed by a client device of enrolling biometric data of a user with a network node over a secure communication channel comprises capturing the biometric data, transforming the biometric data into a first set of transformed biometric data using a first feature transformation key, generating a second feature transformation key, and transforming the biometric data into a second set of transformed biometric data using the second feature transformation key. The method further comprises encrypting the first and second set of transformed biometric data with an encryption key, encrypting the second feature transformation key with another encryption key shared with the network node at which the first and second sets of transformed biometric data are to be enrolled, and submitting, to the network node, an enrolment request comprising the encrypted first and second sets of transformed biometric data, the encrypted second feature transformation key, and user profile data.
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公开(公告)号：US20190165939A1
公开(公告)日：2019-05-30
申请号：US16117552
申请日：2018-08-30
Applicant: Fingerprint Cards AB
Inventor： Christian GEHRMANN , Steven POPE
Abstract: A method performed by a client device of enrolling biometric data of a user with a network node over a secure communication channel comprises capturing the biometric data, transforming the biometric data into a first set of transformed biometric data using a first feature transformation key, generating a second feature transformation key, and transforming the biometric data into a second set of transformed biometric data using the second feature transformation key. The method further comprises encrypting the first and second set of transformed biometric data with an encryption key, encrypting the second feature transformation key with another encryption key shared with the network node at which the first and second sets of transformed biometric data are to be enrolled, and submitting, to the network node, an enrolment request comprising the encrypted first and second sets of transformed biometric data, the encrypted second feature transformation key, and user profile data.
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85.发明授权公开(公告)号：US10089546B2
公开(公告)日：2018-10-02
申请号：US15443639
申请日：2017-02-27
Applicant: Fingerprint Cards AB
Inventor： Thierry Bellier , France Laliberté
Abstract: A method of correcting charge values acquired from a capacitive fingerprint sensor, comprising acquiring a list of one or more defective capacitive sensor elements and for defective capacitive sensor element in the list, selecting its position as a first position and: performing a first operation by placing a first filter window about the first position and computing a replacement value for the first position from charge values within the first filter window, but forgoing computing a replacement value for the first position in case a first threshold number of defective capacitive sensor elements located within the first filter window is exceeded; in case the first operation forgo computing a replacement value for the first position, performing a second operation by placing a second filter window about the first position and computing a replacement value for the first position from charge values within the second filter window, but forgoing computing a replacement value for the first position in case a second threshold number of defective capacitive sensor elements located within the second filter window is exceeded; wherein the second filter window has a wider expanse than the first filter window.
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Patent Agency Ranking
公开(公告)号：US10037454B2
公开(公告)日：2018-07-31
申请号：US15689496
申请日：2017-08-29
Applicant: Fingerprint Cards AB
Inventor： Kenneth Jonsson , David Tingdahl
CPC classification number: G06K9/0002 , G06F21/32 , G06K9/00013 , G06K9/00067 , G06K9/001 , G06K9/4671 , G06K9/6228
Abstract: The present invention generally relates to a method for forming a candidate fingerprint representation of a fingerprint of a finger of a user of an electronic device comprising a capacitive fingerprint sensor for sensing a fingerprint pattern, the method comprising acquiring a sequence of candidate fingerprint images each acquired at different imaging acquisition settings. Further, a fingerprint feature set is extracted from each of the candidate fingerprint images, the fingerprint features of each fingerprint set being extracted according to a first selection criterion. A feature representation set is determined for each of the fingerprint feature sets. A candidate fingerprint representation is formed from a combination of the fingerprint feature representation sets. The invention further relates to a fingerprint sensing system and an electronic device.
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公开(公告)号：US10002280B1
公开(公告)日：2018-06-19
申请号：US15724603
申请日：2017-10-04
Applicant: Fingerprint Cards AB
Inventor： Fredrik Ramberg , Hans Thörnblom
Abstract: There is provided a method for controlling a capacitive fingerprint sensing device for sensing a fingerprint pattern of a finger, the capacitive fingerprint sensor comprising a plurality of sensing elements. Each sensing element comprises a protective dielectric top layer to be touched by the finger, an electrically conductive sensing structure arranged underneath the top layer, sensing circuitry for providing an analog sensing signal indicative of a distance between the finger and the sensing structure. The fingerprint sensing device further comprises timing circuitry configured to control a timing of a drive signal, the drive signal being configured to provide a change in potential difference between the finger and the sensing structure. The method comprises forming a drive signal comprising a sequence of pulses, wherein a delay between consecutive pulses is controllable by said timing circuitry. There is also provided a sensing device configured to perform the above described method.
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公开(公告)号：US09977945B2
公开(公告)日：2018-05-22
申请号：US15464680
申请日：2017-03-21
Applicant: Fingerprint Cards AB
Inventor： Karl Lundahl , Robert Hägglund , Emil Hjalmarson , Rolf Sundblad , Christer Jansson
CPC classification number: G06K9/0002 , G06F3/0412 , G06F2203/0338 , G06F2203/04103 , G06K9/00087
Abstract: There is provided a capacitive fingerprint sensing device for sensing a fingerprint pattern of a finger, said capacitive fingerprint sensing device comprising: a protective top layer to be touched by said finger; a first metal layer comprising a two-dimensional array of sensing structures arranged underneath said top layer; a second metal layer, arranged underneath said first metal layer, comprising a plurality of conductive structures a dielectric layer arranged between the first and second metal layers to electrically insulate the first metal layer from the second metal layer, the dielectric layer comprising a low-k material; and readout circuitry arranged underneath said second metal layer and coupled to each of the electrically conductive sensing structures by means of via connections to receive a sensing signal indicative of a distance between said finger and said sensing structure. There is also provided a method for manufacturing such a device.
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公开(公告)号：US20180137332A1
公开(公告)日：2018-05-17
申请号：US15807006
申请日：2017-11-08
Applicant: Fingerprint Cards AB
Inventor： Klaus Scheldrup ANDERSEN , Troels BJERRE
IPC: G06K9/00
CPC classification number: G06K9/00026 , G06K9/0002 , G06K9/00087 , G06K9/00926
Abstract: The present invention relates to a method of enrolling a fingerprint of a user's finger using a fingerprint sensor, specifically allowing for an adaptability in a number of times the use's finger needs to touch/contact the fingerprint sensor for enrollment completion. The invention also relates to a corresponding electronic device and to a computer program product.
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公开(公告)号：US09971434B2
公开(公告)日：2018-05-15
申请号：US15359114
申请日：2016-11-22
Applicant: Fingerprint Cards AB
Inventor： Eric Setterberg , David Carling
CPC classification number: G06F3/041 , G06F3/0304 , G06F3/03547 , G06F2203/0338 , G06K9/00013 , G06K9/0008 , G06K9/00335 , G06K9/00355 , G06K9/52 , G06K9/6215 , G06K2009/3291
Abstract: A method of estimating a finger movement comprising acquiring a navigation evaluation image from each of at least three navigation subareas of a fingerprint sensor; determining, for each of the navigation evaluation images, a navigation-related property of the navigation evaluation image; evaluating the navigation-related properties to find a combination of at least a first navigation-related property and a second navigation-related property that fulfills a navigation requirement; and selecting at least a first navigation subarea related to the first navigation-related property and a second navigation subarea related to the second navigation-related property. The finger movement is then estimated using a sequence of first navigation images acquired using the first navigation subarea, and a sequence of second navigation images acquired using the second navigation subarea.
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