Patents by Inventor René Nilsson
René Nilsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11508181Abstract: 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: GrantFiled: December 17, 2019Date of Patent: November 22, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: René Nilsson, Hans Martinsson, Arne Husth
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Patent number: 11482033Abstract: A method for controlling a plurality of ultrasonic transducers in a fingerprint sensing system that comprises a cover plate having a sensing surface configured to be touched by a finger, and a plurality of ultrasonic transducers located at the periphery of the cover plate and configured to transmit an acoustic signal propagating in the cover plate, receive an ultrasonic signal having interacted with an object in contact with the sensing surface, and to determine properties of the object based on the received ultrasonic signal. The method comprises: in response to a first input, controlling the plurality of transducers such that at least a portion of the sensing surface has a first feature detection resolution; and in response to a second input, controlling the plurality of transducers such that at least a portion of the sensing surface has a second feature detection resolution, different from the first feature detection resolution.Type: GrantFiled: October 23, 2018Date of Patent: October 25, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: Farzan Ghavanini, Jonas Tallhage, Frank Riedijk, René Nilsson, Wieslaw Bicz, Agnieszka Bicz
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Patent number: 11450138Abstract: 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: GrantFiled: October 8, 2019Date of Patent: September 20, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventor: René Nilsson
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Patent number: 11398110Abstract: 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: GrantFiled: September 17, 2018Date of Patent: July 26, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: René Nilsson, Jun Liu, Ehsan Hashemi
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Patent number: 11398104Abstract: 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: GrantFiled: September 5, 2018Date of Patent: July 26, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: Jun Liu, Ehsan Hashemi, Hans Martinsson, René Nilsson, Farzan Ghavanini
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Publication number: 20220130167Abstract: 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: ApplicationFiled: December 17, 2019Publication date: April 28, 2022Applicant: Fingerprint Cards ABInventors: René NILSSON, Hans MARTINSSON, Arne HUSTH
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Patent number: 11308729Abstract: A biometric imaging device configured to capture an image of an object in contact with an outer surface of the imaging device, comprising: an at least partially transparent display panel comprising a repeating transmission pattern defined by an array of display unit cells, each display unit cell having the same transmission pattern; an image sensor comprising a photodetector pixel array arranged underneath the display panel; and a collimator layer arranged between the display panel and the image sensor that comprises a plurality of first collimating structures having a first collimator opening size and a plurality of second collimating structures having a second collimator opening size different from the first collimator opening size, wherein the respective collimator opening size and relative location of the first and second collimating structure in relation to the display unit cell is based on the transmission pattern of the display unit cell.Type: GrantFiled: March 5, 2019Date of Patent: April 19, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: René Nilsson, Hans Martinsson, Ehsan Hashemi, Farzan Ghavanini
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Patent number: 11301664Abstract: 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: GrantFiled: September 12, 2018Date of Patent: April 12, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: Jun Liu, René Nilsson, Hans Martinsson, Ehsan Hashemi
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Patent number: 11301706Abstract: The present disclosure generally relates to a method of authenticating a user, using an electronic device comprising a fingerprint sensor, and more specifically to improvements in relation to how to acquiring an authentication fingerprint image for use in authenticating the user. The present disclosure also relates to a corresponding electronic device and to a computer program product.Type: GrantFiled: June 5, 2019Date of Patent: April 12, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: Troels Bjerre, René Nilsson
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Publication number: 20220043998Abstract: 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: ApplicationFiled: September 17, 2018Publication date: February 10, 2022Applicant: Fingerprint Cards ABInventors: René NILSSON, Jun LIU, Ehsan HASHEMI
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Patent number: 11200408Abstract: There is provided a biometric imaging system comprising: a display panel comprising: a plurality of display pixels controllable to form an image in the display and a plurality of individually controllable non-visible light emitting elements configured to the emit non-visible light, the non-visible light emitting elements being configured to form a controllable spatial irradiation pattern within an irradiation zone defined by the plurality of non-visible light emitting elements; and a control unit. The control unit is configured to identify a biometric object facing the display panel; determine a relative location of the biometric object in the irradiation zone; control the plurality of non-visible light emitting elements to form a spatial radiation pattern based on the location of the biometric object in relation to the display panel.Type: GrantFiled: November 13, 2018Date of Patent: December 14, 2021Assignee: Fingerprint Cards Anacatum IP ABInventor: René Nilsson
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Publication number: 20210374379Abstract: 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: ApplicationFiled: October 8, 2019Publication date: December 2, 2021Applicant: Fingerprint Cards ABInventor: René NILSSON
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Publication number: 20210357603Abstract: A method for controlling a plurality of ultrasonic transducers in a fingerprint sensing system that comprises a cover plate having a sensing surface configured to be touched by a finger, and a plurality of ultrasonic transducers located at the periphery of the cover plate and configured to transmit an acoustic signal propagating in the cover plate, receive an ultrasonic signal having interacted with an object in contact with the sensing surface, and to determine properties of the object based on the received ultrasonic signal. The method comprises: in response to a first input, controlling the plurality of transducers such that at least a portion of the sensing surface has a first feature detection resolution; and in response to a second input, controlling the plurality of transducers such that at least a portion of the sensing surface has a second feature detection resolution, different from the first feature detection resolution.Type: ApplicationFiled: October 23, 2018Publication date: November 18, 2021Applicant: FINGERPRINT CARDS ABInventors: Farzan GHAVANINI, Jonas TALLHAGE, Frank RIEDIJK, René NILSSON, Wieslaw BICZ, Agnieszka BICZ
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Publication number: 20210326567Abstract: 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: ApplicationFiled: September 12, 2018Publication date: October 21, 2021Applicant: Fingerprint Cards ABInventors: Jun LIU, René NILSSON, Hans MARTINSSON, Ehsan HASHEMI
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Publication number: 20210312157Abstract: 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: ApplicationFiled: September 5, 2018Publication date: October 7, 2021Applicant: Fingerprint Cards ABInventors: Jun LIU, Ehsan HASHEMI, Hans MARTINSSON, René NILSSON, Farzan GHAVANINI
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Patent number: 11068733Abstract: 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: GrantFiled: November 14, 2018Date of Patent: July 20, 2021Assignee: Fingerprint Cards ABInventor: René Nilsson
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Publication number: 20210209391Abstract: The present disclosure generally relates to a method of authenticating a user, using an electronic device comprising a fingerprint sensor, and more specifically to improvements in relation to how to acquiring an authentication fingerprint image for use in authenticating the user. The present disclosure also relates to a corresponding electronic device and to a computer program product.Type: ApplicationFiled: June 5, 2019Publication date: July 8, 2021Applicant: Fingerprint Cards ABInventors: Troels BJERRE, René NILSSON
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Patent number: 11030433Abstract: There is provided 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 in contact with an outer surface of the display panel. The biometric imaging device comprises: an image sensor comprising a photodetector pixel array; a transparent substrate arranged to cover the image sensor; an opaque layer covering an upper surface of the transparent substrate, wherein the opaque layer further comprises a plurality of separate openings; and a plurality of microlenses, each microlens being arranged in alignment with a respective opening of the opaque layer; wherein each microlens is configured to redirect light through the transparent substrate and onto a subarray of pixels in the photodetector pixel array.Type: GrantFiled: December 10, 2018Date of Patent: June 8, 2021Assignee: Fingerprint Cards ABInventors: René Nilsson, Hans Martinsson, Ehsan Hashemi
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Patent number: 10984218Abstract: The invention relates to a method of a fingerprint sensing system arranged in an electronic device of capturing fingerprint data of a user contacting a fingerprint sensor of the fingerprint sensing system, and a fingerprint sensing system performing the method.Type: GrantFiled: April 25, 2018Date of Patent: April 20, 2021Assignee: FINGERPRINT CARDS ABInventors: René Nilsson, Eric Setterberg
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Publication number: 20210019540Abstract: 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: ApplicationFiled: November 14, 2018Publication date: January 21, 2021Applicant: Fingerprint Cards ABInventor: René NILSSON