Patents by Inventor Wouter Brevet
Wouter Brevet 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: 11935319Abstract: A method of evaluating a dielectric structure, comprising the steps of a) changing a potential difference between each sensing structure in a first set of sensing structures and each sensing structure in a second set of sensing structures, and to providing, for each sensing structure in the first set of sensing structures, a sensing signal indicative of a strength of a capacitive coupling between each sensing structure in the second set of sensing structures and the sensing structure in the first set of sensing structures; b) assign other sensing structures to the first set of sensing structures and the second set of sensing structures; c) performing step a) and step b) until a respective sensing signal has been provided for each sensing structure in the plurality of sensing structures; and d) providing an evaluation result based on the respective sensing signals.Type: GrantFiled: November 2, 2021Date of Patent: March 19, 2024Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: Frank Riedijk, Wouter Brevet, Hans Thörnblom, Anton Landberg
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Publication number: 20240028154Abstract: A fingerprint sensor comprising a plurality of sensing elements distributed across a rectangular sensing area with mutually opposite short sides and mutually opposite long sides, the sensing elements being arranged in a plurality of rows and a plurality of columns; readout circuitry arranged in a readout area located adjacent to a short side of the sensing area; and a plurality of readout lines for connecting each of the sensing elements to the readout circuitry, the readout lines in the plurality of readout lines extending in parallel to the long sides of the sensing area. For each column of sensing elements in the plurality of columns, at least a first sensing element and a second sensing element in the column are simultaneously connectable to the readout circuitry via a first readout line and a second readout line, respectively, in the plurality of readout lines.Type: ApplicationFiled: December 16, 2021Publication date: January 25, 2024Inventors: Frank Riedijk, Wouter Brevet, Hans Thörnblom
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Publication number: 20230375612Abstract: A method of evaluating a dielectric structure, comprising the steps of a) changing a potential difference between each sensing structure in a first set of sensing structures and each sensing structure in a second set of sensing structures, and to providing, for each sensing structure in the first set of sensing structures, a sensing signal indicative of a strength of a capacitive coupling between each sensing structure in the second set of sensing structures and the sensing structure in the first set of sensing structures; b) assign other sensing structures to the first set of sensing structures and the second set of sensing structures; c) performing step a) and step b) until a respective sensing signal has been provided for each sensing structure in the plurality of sensing structures; and d) providing an evaluation result based on the respective sensing signals.Type: ApplicationFiled: November 2, 2021Publication date: November 23, 2023Inventors: Frank Riedijk, Wouter Brevet, Hans Thörnblom, Anton Landberg
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Patent number: 11538267Abstract: 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: GrantFiled: September 7, 2021Date of Patent: December 27, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: Frank Riedijk, Wouter Brevet, Hans Thörnblom
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Patent number: 11501554Abstract: 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: GrantFiled: September 7, 2021Date of Patent: November 15, 2022Assignee: FINGERPRINT CARDS ANACATUM IP ABInventors: Frank Riedijk, David Carling, Hans Thörnblom, Wouter Brevet
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Publication number: 20220075977Abstract: 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: ApplicationFiled: September 7, 2021Publication date: March 10, 2022Applicant: Fingerprint Cards ABInventors: Frank RIEDIJK, Wouter BREVET, Hans THÖRNBLOM
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Publication number: 20220075976Abstract: 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: ApplicationFiled: September 7, 2021Publication date: March 10, 2022Applicant: Fingerprint Cards ABInventors: Frank RIEDIJK, David CARLING, Hans THÖRNBLOM, Wouter BREVET
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Patent number: 10482307Abstract: A fingerprint sensing system for sensing a fingerprint pattern of a finger, comprising: a sensor array including a plurality of electrically conductive sensing structures; read-out circuitry connected to each of the sensing structures for providing sensing signals indicative of a capacitive coupling between the sensing structures and the finger; first signal providing circuitry for providing a first time-varying voltage signal to at least a portion of the sensor array; at least one electrically conductive edge-compensating structure arranged outside the sensor array; and second signal providing circuitry for providing a second time-varying voltage signal to the at least one edge-compensating structure.Type: GrantFiled: September 25, 2018Date of Patent: November 19, 2019Assignee: Fingerprint Cards ABInventors: Frank Riedijk, Wouter Brevet
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Fingerprint sensing using measuring configurations with different principal directions of extensions
Patent number: 10474873Abstract: A method of determining a representation of a fingerprint pattern of a finger using a fingerprint sensor comprising a two-dimensional measuring arrangement including a plurality of measuring elements, each comprising a finger electrode spaced apart from the finger by a dielectric structure. For each measurement position, the method comprises the steps of: providing a first measuring element configuration with an elongated first measuring arrangement portion having a first principal direction of extension; and a first peripheral measuring arrangement portion; acquiring a first measurement value for the measurement position; providing a second measuring element configuration having an elongated second measuring arrangement portion having a second principal direction of extension; and a second peripheral measuring arrangement portion; and acquiring a second measurement value for the measurement position.Type: GrantFiled: November 8, 2017Date of Patent: November 12, 2019Assignee: Fingerprint Cards ABInventors: Frank Riedijk, Wouter Brevet, Hans Thörnblom, Christer Jansson -
Publication number: 20190197283Abstract: A fingerprint sensing system for sensing a fingerprint pattern of a finger, comprising: a sensor array including a plurality of electrically conductive sensing structures; read-out circuitry connected to each of the sensing structures for providing sensing signals indicative of a capacitive coupling between the sensing structures and the finger; first signal providing circuitry for providing a first time-varying voltage signal to at least a portion of the sensor array; at least one electrically conductive edge-compensating structure arranged outside the sensor array; and second signal providing circuitry for providing a second time-varying voltage signal to the at least one edge-compensating structure.Type: ApplicationFiled: September 25, 2018Publication date: June 27, 2019Applicant: Fingerprint Cards ABInventors: Frank RIEDIJK, Wouter BREVET
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FINGERPRINT SENSING USING MEASURING CONFIGURATIONS WITH DIFFERENT PRINCIPAL DIRECTIONS OF EXTENSIONS
Publication number: 20180137324Abstract: A method of determining a representation of a fingerprint pattern of a finger using a fingerprint sensor comprising a two-dimensional measuring arrangement including a plurality of measuring elements, each comprising a finger electrode spaced apart from the finger by a dielectric structure. For each measurement position, the method comprises the steps of: providing a first measuring element configuration with an elongated first measuring arrangement portion having a first principal direction of extension; and a first peripheral measuring arrangement portion; acquiring a first measurement value for the measurement position; providing a second measuring element configuration having an elongated second measuring arrangement portion having a second principal direction of extension; and a second peripheral measuring arrangement portion; and acquiring a second measurement value for the measurement position.Type: ApplicationFiled: November 8, 2017Publication date: May 17, 2018Applicant: Fingerprint Cards ABInventors: Frank RIEDIJK, Wouter BREVET, Hans THÖRNBLOM, Christer JANSSON -
Patent number: 9922231Abstract: A method of determining a representation of a physical property of a finger using a finger sensing system 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.Type: GrantFiled: June 28, 2017Date of Patent: March 20, 2018Assignee: FINGERPRINT CARDS ABInventors: Frank Riedijk, Wouter Brevet, Lars Christensen, Søren Christensen, Michael Hansen