Patents Assigned to Fingerprint Cards AB
  • Publication number: 20220130167
    Abstract: Method for determining image reconstruction parameters in an optical biometric imaging device comprising a plurality of microlenses forming a microlens array and an image sensor arranged to receive light having passed through the microlenses, the method comprising: by the image sensor, capturing a plurality of sub-images together representing an image of a biometric object in contact with a sensing surface of the biometric imaging device, each sub-image corresponding to a respective microlens; and determining a demagnification factor based on at least a subset of the plurality of sub-images.
    Type: Application
    Filed: December 17, 2019
    Publication date: April 28, 2022
    Applicant: Fingerprint Cards AB
    Inventors: René NILSSON, Hans MARTINSSON, Arne HUSTH
  • Publication number: 20220103765
    Abstract: The present invention relates to a method of configuring an optical biometric imaging device comprising a photodetector pixel array, the method comprising: acquiring a biometric image of a biometric object using a first binning setting for binning of detection signals from subarrays of the photodetector pixels into a single pixel value;determining a measure indicative of the feature resolution of the biometric image; and determining, when the measure indicates that the feature resolution is below a feature resolution threshold, a second binning setting adapted to provide a higher feature resolution compared to the feature resolution of the biometric image.
    Type: Application
    Filed: December 11, 2019
    Publication date: March 31, 2022
    Applicant: Fingerprint Cards AB
    Inventor: Hans MARTINSSON
  • Publication number: 20220075976
    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.
    Type: Application
    Filed: September 7, 2021
    Publication date: March 10, 2022
    Applicant: Fingerprint Cards AB
    Inventors: Frank RIEDIJK, David CARLING, Hans THÖRNBLOM, Wouter BREVET
  • Publication number: 20220075977
    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 placed on the finger receiving surface of the fingerprint sensor arrangement, the plurality of electrically conductive sensing structures including: a first set of electrically conductive sensing structures, each sensing structure in the first set of electrically conductive sensing structures covering an area in the sensing plane being within a first area range; and a second set of electrically conductive sensing structures, each sensing structure in the second set of electrically conductive sensing structures covering an area in the sensing plane being within a second area range only including areas greater than the areas within the first area range.
    Type: Application
    Filed: September 7, 2021
    Publication date: March 10, 2022
    Applicant: Fingerprint Cards AB
    Inventors: Frank RIEDIJK, Wouter BREVET, Hans THÖRNBLOM
  • Publication number: 20220043998
    Abstract: A biometric imaging device configured to be arranged under an at least partially transparent display panel and configured to capture an image of an object located on an opposite side of the transparent display panel. The biometric imaging device comprises an image sensor comprising a photodetector pixel array; a transparent substrate covering the photodetector pixel array; a first set of microlenses configured to redirect light through the transparent substrate and onto a subarray of pixels in the photodetector pixel array. The lenses in the first set have a first focal length. A second set of microlenses configured to redirect light through the transparent substrate and onto a subarray of pixels in the photodetector pixel array. The lenses in the second set of microlenses have a second focal length which is different from the first focal length.
    Type: Application
    Filed: September 17, 2018
    Publication date: February 10, 2022
    Applicant: Fingerprint Cards AB
    Inventors: René NILSSON, Jun LIU, Ehsan HASHEMI
  • Publication number: 20210407822
    Abstract: A method of manufacturing a fingerprint sensor component having a component outline for integration into an electronic device, the method comprising the steps of: providing a fingerprint sensor package having a sensing surface, a connection surface opposite the sensing surface, and sides connecting the sensing surface and the connection surface, the connection surface having connectors for allowing electrical connection of the fingerprint sensor component to the electronic device; arranging the fingerprint sensor package on a temporary carrier with the connection surface facing the temporary carrier; and adding material at least around the sides of the fingerprint sensor package, while leaving the connection surface of the fingerprint sensor package uncovered.
    Type: Application
    Filed: November 15, 2018
    Publication date: December 30, 2021
    Applicant: Fingerprint Cards AB
    Inventor: Olivier LIGNIER
  • Publication number: 20210374379
    Abstract: An optical biometric imaging arrangement configured to be arranged under an at least partially transparent display panel, and configured to capture an image of an object located on an opposite side of the display panel, comprising: an image sensor comprising a photodetector pixel array; an array of light redirecting elements, each light redirecting element is configured to redirect light onto the pixel array, a color filter arranged between the array of light redirecting elements and the image sensor, the color filter comprising at least two color filter arrays of respective color filter elements being optically transmissive, a first color array comprising first color filter elements and a second color array comprising second color filter elements, the color filter arrays are arranged such that each photodetector pixel is at least partly covered by at least a first and a second color filter element.
    Type: Application
    Filed: October 8, 2019
    Publication date: December 2, 2021
    Applicant: Fingerprint Cards AB
    Inventor: René NILSSON
  • Publication number: 20210365531
    Abstract: The present disclosure generally relates to a method for authenticating a user using an electronic device, where the electronic device comprises a biometric sensing system as well as a first, a second and a third control unit. The present disclosure also relates to a corresponding electronic device and to a computer program product.
    Type: Application
    Filed: June 18, 2019
    Publication date: November 25, 2021
    Applicant: Fingerprint Cards AB
    Inventors: Mats TUNELD, Christian GEHRMANN, Eric SETTERBERG
  • Patent number: 11157714
    Abstract: A method for determining a finger motion on a fingerprint sensor comprising a sensing area, the method comprises: receiving a finger on the sensing area of the fingerprint sensor; when an amount of sensor area coverage caused by the finger touching the sensing area is below a coverage threshold, acquiring images of a first type using a first image acquisition setting with the fingerprint sensor, when the amount of sensor area coverage is equal to or exceeds the coverage threshold, acquiring images of a second type using a second image acquisition setting with the fingerprint sensor, and determining a present motion of the finger on the fingerprint sensor based on the first type of images or the second type of images depending on a present amount of sensor area coverage.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: October 26, 2021
    Assignee: Fingerprint Cards AB
    Inventors: Troels Bjerre, Samuel Löfström
  • Publication number: 20210326567
    Abstract: The invention relates to a method of reconstructing a fingerprint image from a plurality of fingerprint subimages captured by an optical microlens array fingerprint sensor, and a sensor system performing the method. In an aspect, a method of reconstructing a fingerprint image from a plurality of fingerprint subimages captured by an optical microlens array fingerprint sensor arranged under a touch-display of a device is provided.
    Type: Application
    Filed: September 12, 2018
    Publication date: October 21, 2021
    Applicant: Fingerprint Cards AB
    Inventors: Jun LIU, René NILSSON, Hans MARTINSSON, Ehsan HASHEMI
  • Publication number: 20210312157
    Abstract: There is 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 and image sensor circuitry configured to capture an image of the object in contact with the outer surface of the imaging device; the image sensor comprising a first electrically conductive structure arranged adjacent to an active sensing area of the photodetector pixel array; a display panel arranged on top of and at a distance from the image sensor, the display panel comprising a second electrically conductive structure on a bottom side of the display panel and arranged to face the first electrically conductive structure of the image sensor; and capacitive readout circuitry arranged and configured to detect a capacitance between the first electrically conductive structure and the second electrically conductive structure.
    Type: Application
    Filed: September 5, 2018
    Publication date: October 7, 2021
    Applicant: Fingerprint Cards AB
    Inventors: Jun LIU, Ehsan HASHEMI, Hans MARTINSSON, René NILSSON, Farzan GHAVANINI
  • Patent number: 11100305
    Abstract: There is provided a display arrangement comprising an ultrasonic biometric sensing device. The display arrangement comprises: a cover plate having a sensing surface configured to be touched by a finger; a display panel comprising a plurality of sub-layers; a plurality of ultrasonic transducers arranged along the periphery of the display arrangement and outside of an active display area of the display arrangement, each ultrasonic transducer comprising a top and bottom electrode; and ultrasonic transducer control circuitry to control the ultrasonic transducers to determine properties of an object in contact with the sensing surface. One of the sub-layers in the display panel comprises a protruding portion extending outside of an area of any other sub-layer located between the sub-layer comprising the protruding portion and the cover plate, and the plurality of ultrasonic transducers are arranged on the protruding portion between the protruding portion and the cover plate.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: August 24, 2021
    Assignee: Fingerprint Cards AB
    Inventors: Martin Grip, Farzan Ghavanini
  • Patent number: 11093090
    Abstract: A fingerprint sensing system comprising a plurality of conductive selection lines; a plurality of conductive read-out lines crossing the selection lines; selection circuitry controllable to provide a selection signal on at least one selected selection line in the plurality of selection lines; a plurality of pixel elements formed at intersections between the selection lines and the read-out lines; a reference signal source configured to provide a reference signal; and read-out circuitry coupled to each read-out line in the plurality of read-out lines and to the reference signal source, the read-out circuitry being configured to acquire a read-out signal via a read-out line connected to a selected pixel element, when the selected pixel element provides the sensing signal; acquire a reference signal from the reference signal source; form a corrected read-out signal for the selected pixel element based on the read-out signal and the reference signal; and provide corrected read-out signals.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: August 17, 2021
    Assignee: Fingerprint Cards AB
    Inventors: Andreas Larsson, Frank Riedijk
  • Publication number: 20210250867
    Abstract: The present invention relates to a method for controlling a device controller of an electronic device comprising a fingerprint sensor to transition from an at least partly active mode to an at least partly in-active mode. The fingerprint sensor itself is used for determining a presence of a finger on the fingerprint sensor, wherein a device controller is maintained in an at least partly active mode if a finger is detected on the fingerprint sensor. The present invention also relates to an electronic device comprising a fingerprint sensor and a device controller.
    Type: Application
    Filed: December 3, 2018
    Publication date: August 12, 2021
    Applicant: Fingerprint Cards AB
    Inventors: Hamid SARVE, Jimmy BJÖRKLUND
  • Patent number: 11080546
    Abstract: The present disclosure relates a method for fingerprint image enhancement comprising applying a first low pass filter and a first weight to raw fingerprint image data to produce a first filtered fingerprint image data set. Applying a second low pass filter and a second weight to the raw fingerprint image data to produce a second filtered fingerprint image data set. Filter coefficients of the second filter are different from filter coefficients of the first filter. The first filtered fingerprint image data set and the second filtered fingerprint image data set are combined to produce a final enhanced fingerprint image. The disclosure also relates to a fingerprint sensing system and to an electronic device comprising a fingerprint sensing system.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: August 3, 2021
    Assignee: Fingerprint Cards AB
    Inventors: Søren Skovgaard Christensen, Morten With Pedersen
  • Publication number: 20210232241
    Abstract: A method for providing user input on an electronic device comprising a fingerprint sensor comprising an array of sensing elements. Acquiring partial fingerprint images of a finger touching a finger touch surface of the fingerprint sensor from at least two sub-groups of sensing element. Determining a respective force value indicative of a force applied on the finger touch surface at each of the sub-groups of sensing elements when the partial fingerprints were acquired, based on the partial fingerprint images acquired from the respective sub-group of sensing elements. Determining a force value difference between a pair of the determined force values. Determining a user input based on the determined force value difference, and based on the relative location between the sub-groups of sensing elements in the pair associated with the force value difference.
    Type: Application
    Filed: April 26, 2019
    Publication date: July 29, 2021
    Applicant: Fingerprint Cards AB
    Inventors: Troels BJERRE, Klaus S. ANDERSEN
  • Publication number: 20210224626
    Abstract: Method for manufacturing a smartcard comprising a fingerprint sensor, the method comprising: arranging a fingerprint sensor module in an opening of a carrier layer of a smartcard body; forming a cavity in the smartcard in an area corresponding to a sensing area of the fingerprint sensor module; forming a plurality of surface structures in the cavity of the smartcard; depositing a liquid hydrophobic material in the cavity to at least partially cover the surface structures and a smartcard manufactured according to the described method.
    Type: Application
    Filed: May 27, 2019
    Publication date: July 22, 2021
    Applicant: Fingerprint Cards AB
    Inventors: Karl LUNDAHL, Olivier LIGNIER
  • Patent number: 11068733
    Abstract: There is provided a biometric imaging system comprising a display panel. The display panel in turn comprises: a plurality of display pixels configured to emit visible light and controllable to form an image in the display; and a plurality of non-visible light emitting elements configured to emit linearly polarized non-visible light; a camera configured to receive polarized non-visible light having an orientation which is rotated with respect to the emitted linearly polarized light; and control circuitry configured to: activate the plurality of non-visible light emitting elements to emit linearly polarized light towards a biometric object; and control the camera to capture an image based on light reflected by the biometric object having a polarization which is rotated with respect to the emitted linearly polarized light.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: July 20, 2021
    Assignee: Fingerprint Cards AB
    Inventor: René Nilsson
  • Publication number: 20210209336
    Abstract: The present disclosure relates to a method performed in a fingerprint analysis system for facilitating differentiating between a live finger and a spoof finger. The method comprises acquiring a plurality of time-sequences of images, each of the time-sequences showing a respective finger as it engages a detection surface of a fingerprint sensor. Each of the time-sequences comprises at least a first image and a last image showing a fingerprint topography of the finger, wherein the respective fingers of some of the time-sequences are known to be live fingers and the respective fingers of some other of the time-sequences are known to be spoof fingers. The method also comprises training a machine learning algorithm on the plurality of time-sequences to produce a model of the machine learning algorithm for differentiating between a live finger and a spoof finger.
    Type: Application
    Filed: October 5, 2018
    Publication date: July 8, 2021
    Applicant: Fingerprint Cards AB
    Inventors: Kenneth JONSSON, Alaa HALAWANI
  • Publication number: 20210209329
    Abstract: A method for determining a finger motion on a fingerprint sensor comprising a sensing area, the method comprises: receiving a finger on the sensing area of the fingerprint sensor; when an amount of sensor area coverage caused by the finger touching the sensing area is below a coverage threshold, acquiring images of a first type using a first image acquisition setting with the fingerprint sensor, when the amount of sensor area coverage is equal to or exceeds the coverage threshold, acquiring images of a second type using a second image acquisition setting with the fingerprint sensor, and determining a present motion of the finger on the fingerprint sensor based on the first type of images or the second type of images depending on a present amount of sensor area coverage.
    Type: Application
    Filed: May 23, 2019
    Publication date: July 8, 2021
    Applicant: Fingerprint Cards AB
    Inventors: Troels BJERRE, Samuel LÖFSTRÖM