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公开(公告)号：US20200183536A1
公开(公告)日：2020-06-11
申请号：US16791699
申请日：2020-02-14
Applicant: InvenSense, Inc.
Inventor： Eitan MEDINA , Behrooz ABDI , Sam MASSIH , Romain FAYOLLE , Hao-Yen TANG
Abstract: In a method for determining force applied to an ultrasonic sensor, ultrasonic signals are emitted from an ultrasonic sensor. A plurality of reflected ultrasonic signals from a finger interacting with the ultrasonic sensor is captured. A first data based at least in part on a first reflected ultrasonic signal of the plurality of reflected ultrasonic signals is compared with a second data based at least in part on a second reflected ultrasonic signal of the plurality of reflected ultrasonic signals. A deformation of the finger during interaction with the ultrasonic sensor is determined based on differences between the first data based at least in part on the first reflected ultrasonic signal and the second data based at least in part on the second reflected ultrasonic signal. A force applied by the finger to the ultrasonic sensor is determined based at least in part on the deformation.
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公开(公告)号：US20170255338A1
公开(公告)日：2017-09-07
申请号：US15449770
申请日：2017-03-03
Applicant: InvenSense, Inc.
Inventor： Eitan MEDINA , Behrooz ABDI , Sam MASSIH , Romain FAYOLLE , Hao-Yen TANG
CPC classification number: G06F3/0436 , G01L1/16 , G06F3/0414 , G06F3/0416 , G06F3/043 , G06K9/0002 , G06K9/00214
Abstract: In a method for determining force applied to an ultrasonic sensor, ultrasonic signals are emitted from an ultrasonic sensor. A plurality of reflected ultrasonic signals from a finger interacting with the ultrasonic sensor is captured. A first data based at least in part on a first reflected ultrasonic signal of the plurality of reflected ultrasonic signals is compared with a second data based at least in part on a second reflected ultrasonic signal of the plurality of reflected ultrasonic signals. A deformation of the finger during interaction with the ultrasonic sensor is determined based on differences between the first data based at least in part on the first reflected ultrasonic signal and the second data based at least in part on the second reflected ultrasonic signal. A force applied by the finger to the ultrasonic sensor is determined based at least in part on the deformation.
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Patent Agency Ranking
公开(公告)号：US20190180069A1
公开(公告)日：2019-06-13
申请号：US16270395
申请日：2019-02-07
Applicant: InvenSense, Inc.
Inventor： Sina AKHBARI , Bruno FLAMENT , Daniela HALL , Romain FAYOLLE , Etienne DeForas , Harihar NARASIMHA-IYER
Abstract: In a method for modeling a darkfield candidate image at a sensor, a plurality of darkfield images of the sensor is captured, wherein each darkfield image of the plurality of darkfield images is associated with a different operational condition of the sensor. An operational condition of the sensor is determined. A darkfield candidate image comprising a combination of the plurality of darkfield images is modeled based at least in part on the operational condition of the sensor, wherein a contribution of each darkfield image of the plurality of darkfield images is dependent on the operational condition.
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公开(公告)号：US20210286060A1
公开(公告)日：2021-09-16
申请号：US16814917
申请日：2020-03-10
Applicant: InvenSense, Inc.
Inventor： Mark JENNINGS , Romain FAYOLLE , Amaury ROBLES , Pierre PEIFFER
Abstract: In a method for operating a fingerprint sensor including a plurality of ultrasonic transducers and a presence sensor, the presence sensor proximate the fingerprint sensor is activated, where the presence sensor is for detecting interaction between an object and the fingerprint sensor. Subsequent to detecting interaction between an object and the fingerprint sensor at the presence sensor, a subset of ultrasonic transducers of the fingerprint sensor is activated, the subset of ultrasonic transducers for determining whether the object is a human finger, where the subset of ultrasonic transducers is proximate the presence sensor such that the subset of ultrasonic transducers and the presence sensor can concurrently interact with the object.
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公开(公告)号：US20190188442A1
公开(公告)日：2019-06-20
申请号：US16270516
申请日：2019-02-07
Applicant: InvenSense, Inc.
Inventor： Bruno FLAMENT , Daniela HALL , Etienne DeForas , Harihar NARASIMHA-IYER , Romain FAYOLLE , Jonathan BAUDOT , Abbas ATAYA , Sina AKHBARI
CPC classification number: G06K9/0002 , G06K9/00087 , G06T5/002 , G06T7/0002 , G06T2207/20221 , G06T2207/30168 , G06T2207/30196
Abstract: In a method for correcting a fingerprint image, it is determined whether an object is interacting with the fingerprint sensor. Provided an object is not interacting with the fingerprint sensor, it is determined whether to capture a darkfield candidate image at the fingerprint sensor, wherein the darkfield candidate image is an image absent an object interacting with the fingerprint sensor. Responsive to making a determination to capture the darkfield candidate image, the darkfield candidate image is captured at the fingerprint sensor. Provided an object is interacting with the fingerprint sensor, it is determined whether to model a darkfield candidate image at the fingerprint sensor. Responsive to making a determination to model the darkfield candidate image, the darkfield candidate image is modeled at the fingerprint sensor. A darkfield estimate is updated with the darkfield candidate image. A fingerprint image is captured at the fingerprint sensor. The fingerprint image is corrected using the darkfield estimate.
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公开(公告)号：US20210397290A1
公开(公告)日：2021-12-23
申请号：US17361162
申请日：2021-06-28
Applicant: InvenSense, Inc.
Inventor： Eitan MEDINA , Behrooz ABDI , Sam MASSIH , Romain FAYOLLE , Hao-Yen TANG
Abstract: In a method for determining force applied to an ultrasonic sensor, ultrasonic signals are emitted from an ultrasonic sensor. A plurality of reflected ultrasonic signals from a finger interacting with the ultrasonic sensor is captured. A first data based at least in part on a first reflected ultrasonic signal of the plurality of reflected ultrasonic signals is compared with a second data based at least in part on a second reflected ultrasonic signal of the plurality of reflected ultrasonic signals. A deformation of the finger during interaction with the ultrasonic sensor is determined based on differences between the first data based at least in part on the first reflected ultrasonic signal and the second data based at least in part on the second reflected ultrasonic signal. A force applied by the finger to the ultrasonic sensor is determined based at least in part on the deformation.
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公开(公告)号：US20190250771A1
公开(公告)日：2019-08-15
申请号：US16392161
申请日：2019-04-23
Applicant: InvenSense, Inc.
Inventor： Eitan MEDINA , Behrooz ABDI , Sam MASSIH , Romain FAYOLLE , Hao-Yen TANG
CPC classification number: G06F3/0436 , G01L1/16 , G06F3/0414 , G06F3/0416 , G06F3/043 , G06K9/0002 , G06K9/00214
Abstract: In a method for determining force applied to an ultrasonic sensor, ultrasonic signals are emitted from an ultrasonic sensor. A plurality of reflected ultrasonic signals from a finger interacting with the ultrasonic sensor is captured. A first data based at least in part on a first reflected ultrasonic signal of the plurality of reflected ultrasonic signals is compared with a second data based at least in part on a second reflected ultrasonic signal of the plurality of reflected ultrasonic signals. A deformation of the finger during interaction with the ultrasonic sensor is determined based on differences between the first data based at least in part on the first reflected ultrasonic signal and the second data based at least in part on the second reflected ultrasonic signal. A force applied by the finger to the ultrasonic sensor is determined based at least in part on the deformation.
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