-
公开(公告)号：US20230375612A1
公开(公告)日：2023-11-23
申请号：US18248418
申请日：2021-11-02
发明人： Frank Riedijk , Wouter Brevet , Hans Thörnblom , Anton Landberg
CPC分类号： G01R31/2829 , G01R27/2605 , G06V40/1306 , G06F21/32
摘要： 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.
-
公开(公告)号：US11727711B2
公开(公告)日：2023-08-15
申请号：US18010006
申请日：2021-06-23
发明人： Hans Thörnblom , Daniel Andersson , Frank Riedijk , Johannes Arvidsson , Rasmus Söderström Olsson
摘要： A fingerprint sensing system for sensing a finger surface of a finger, comprising: an array of sensing elements arranged under a sensing surface, each sensing element in the array of sensing elements being configured to sense a property indicative of a distance between the sensing element and the finger surface; and read-out circuitry coupled to the array of sensing elements and configured to provide, for each sensing element in the array of sensing elements, a timing indication indicative of a time when a value of the property sensed by the sensing element reached a predefined threshold value.
-
公开(公告)号：US11935319B2
公开(公告)日：2024-03-19
申请号：US18248418
申请日：2021-11-02
发明人： Frank Riedijk , Wouter Brevet , Hans Thörnblom , Anton Landberg
CPC分类号： G06V40/1306 , G01R27/2605 , G01R31/2829 , G06F21/32
摘要： 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.
-
公开(公告)号：US20240028154A1
公开(公告)日：2024-01-25
申请号：US18255386
申请日：2021-12-16
发明人： Frank Riedijk , Wouter Brevet , Hans Thörnblom
CPC分类号： G06F3/04164 , G06F3/0446 , G06V40/1306
摘要： 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.
-
公开(公告)号：US11508180B2
公开(公告)日：2022-11-22
申请号：US17760874
申请日：2021-07-08
发明人： Petter Östlund , Hans Thörnblom
摘要： The present invention relates to an optical biometric sensor comprising: a read-out circuitry controllable for converting analog sensing signals to digital signals, the analog sensing signals being indicative of an image acquired by an image sensor comprising an array of photodetectors; and a timing circuitry configured to control the read-out circuitry to provide digital signals based on a present data transfer capacity on a data transfer bus configured to transfer data indicative of the digital signals from the optical biometric sensor to a host device.
-
公开(公告)号：US12056307B2
公开(公告)日：2024-08-06
申请号：US18255386
申请日：2021-12-16
发明人： Frank Riedijk , Wouter Brevet , Hans Thörnblom
CPC分类号： G06F3/04164 , G06F3/0446 , G06V40/1306
摘要： 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.
-
公开(公告)号：US20230230410A1
公开(公告)日：2023-07-20
申请号：US18010006
申请日：2021-06-23
发明人： Hans Thörnblom , Daniel Andersson , Frank Riedijk , Johannes Arvidsson , Rasmus Söderström Olsson
摘要： A fingerprint sensing system for sensing a finger surface of a finger, comprising: an array of sensing elements arranged under a sensing surface, each sensing element in the array of sensing elements being configured to sense a property indicative of a distance between the sensing element and the finger surface; and read-out circuitry coupled to the array of sensing elements and configured to provide, for each sensing element in the array of sensing elements, a timing indication indicative of a time when a value of the property sensed by the sensing element reached a predefined threshold value.
-
公开(公告)号：US11516413B2
公开(公告)日：2022-11-29
申请号：US17760916
申请日：2021-07-08
发明人： Petter Östlund , Hans Thörnblom
摘要： The present invention relates to an optical biometric sensor (100) comprising: an image sensor (302) comprising an array (301) of photodetectors (304), wherein for acquiring sensing signals, the image sensor is controllable to sequentially start exposure of subsets (306, 308, 309) of photodetectors; and a timing circuitry (310) configured to control the start of exposure of a subset of photodetectors based on a present data transfer capacity on a data transfer bus (312) configured to transfer data indicative of the acquired sensing signals from the optical biometric sensor to a host device (314).
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.014 秒)
