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公开(公告)号：US20210124892A1
公开(公告)日：2021-04-29
申请号：US17001531
申请日：2020-08-24
Applicant: InvenSense, Inc.
Inventor： Etienne De FORAS , Harihar NARASIMHA-IYER , Daniela HALL , Jonathan BAUDOT , Bruno FLAMENT
IPC: G06K9/00
Abstract: In a method for operating a fingerprint sensor including a plurality of ultrasonic transducers, receiving a plurality of images corresponding to different subsets of the ultrasonic transducers of the fingerprint sensor are received, wherein the plurality of images are non-adjacent. For each image of the plurality of images, it is determined whether the image of the plurality of images is indicative of a fingerprint. Provided a number of images of the plurality of images that are indicative of a fingerprint satisfies a threshold, it is determined whether the images of the plurality of images that are indicative of a fingerprint are collectively indicative of a fingerprint. Provided the plurality of images are collectively indicative of a fingerprint, it is determined that the plurality of images include a fingerprint.
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公开(公告)号：US20210117721A1
公开(公告)日：2021-04-22
申请号：US16659069
申请日：2019-10-21
Applicant: InvenSense, Inc.
Inventor： Daniela HALL
Abstract: In a method for fingerprint authentication, a fingerprint image is received from a fingerprint sensor. Fingerprint authentication of the fingerprint image is performed by comparing the fingerprint image to a set of authentication fingerprint images including at least one enrollment fingerprint image and at least one transformed fingerprint image, where the transformed fingerprint image is generated by applying a transfer function to at least one enrollment fingerprint image of the set of authentication fingerprint images, and where the transfer function is for simulating fingerprint image acquisition during a predefined environmental condition.
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公开(公告)号：US20210334568A1
公开(公告)日：2021-10-28
申请号：US16858297
申请日：2020-04-24
Applicant: InvenSense, Inc.
Inventor： Daniela HALL
Abstract: In a method for performing operating a fingerprint sensor, an image of a fingerprint of a finger is captured at a fingerprint sensor. A force applied by the finger at the fingerprint sensor is determined, where the force is a measure of pressure applied by the finger on the fingerprint sensor during capture of the image. The force is compared to a pressure threshold. Provided the force satisfies a pressure threshold, a spoof detection operation is performed to determine whether the finger is a real finger. Provided the force does not satisfy the pressure threshold, fingerprint authentication using the image of the fingerprint is performed without performing the spoof detection operation.
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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：US20190294845A1
公开(公告)日：2019-09-26
申请号：US15933066
申请日：2018-03-22
Applicant: InvenSense, Inc.
Inventor： Etienne De FORAS , Harihar NARASIMHA-IYER , Daniela HALL , Jonathan BAUDOT , Bruno FLAMENT
IPC: G06K9/00
Abstract: In a method for operating a fingerprint sensor including a plurality of ultrasonic transducers, receiving a plurality of images corresponding to different subsets of the ultrasonic transducers of the fingerprint sensor are received, wherein the plurality of images are non-adjacent. For each image of the plurality of images, it is determined whether the image of the plurality of images is indicative of a fingerprint. Provided a number of images of the plurality of images that are indicative of a fingerprint satisfies a threshold, it is determined whether the images of the plurality of images that are indicative of a fingerprint are collectively indicative of a fingerprint. Provided the plurality of images are collectively indicative of a fingerprint, it is determined that the plurality of images include a fingerprint.
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Patent Agency Ranking
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：US20190188441A1
公开(公告)日：2019-06-20
申请号：US16270480
申请日：2019-02-07
Applicant: InvenSense, Inc.
Inventor： Daniela HALL , Bruno FLAMENT , Jonathan BAUDOT , Etienne DeFORAS , Harihar NARASIMHA-IYER
CPC classification number: G06K9/0002 , G06K9/00087 , G06T7/0002 , G06T2207/20221 , G06T2207/30168
Abstract: In a method for evaluating a darkfield image for contamination, it is determined whether an object is interacting with a fingerprint sensor. Provided an object is not interacting with the fingerprint sensor, a darkfield candidate image is captured at a fingerprint sensor. The darkfield candidate image is evaluated for contamination. Based on the evaluating, it is determined whether the darkfield candidate image includes contamination.
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公开(公告)号：US20230152434A1
公开(公告)日：2023-05-18
申请号：US17987304
申请日：2022-11-15
Applicant: InvenSense, Inc.
Inventor： Daniela HALL , Tony LEI , Zhongyang LI , Joe YOUSSEF
IPC: G01S7/521 , G01S15/931 , B06B1/02
CPC classification number: G01S7/521 , G01S15/931 , B06B1/0261
Abstract: A robotic cleaning appliance includes a housing to which is coupled a surface treatment item and a sensor assembly with first and second transducers and an acoustic interface. The first sonic transducer transmits sonic signals through an acoustic interface and out of a first acoustic opening toward a surface beneath the robotic cleaning appliance. The sonic signals reflect from the surface as corresponding returned signals received by the second sonic transducer via a second acoustic opening port of the acoustic interface. A first annular ring is defined around the first acoustic opening port and a second annular rings is defined around the second acoustic opening port. The annular ring attenuate direct path echoes between the acoustic opening ports. The first and second acoustic opening ports are coupled the first and sonic transducers, respectively, via first and second horns; and the horns are tilted from orthogonal with the surface.
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公开(公告)号：US20200257875A1
公开(公告)日：2020-08-13
申请号：US16814939
申请日：2020-03-10
Applicant: InvenSense, Inc.
Inventor： Daniela HALL , Pierre PEIFFER
Abstract: In a method for darkfield tracking at a fingerprint sensor, it is determined whether an object is interacting with the fingerprint sensor using a presence sensor. Provided an object is not interacting with the fingerprint sensor, a determination that a darkfield candidate image can be captured at the fingerprint sensor is made, wherein the darkfield candidate image is an image absent an object interacting with the fingerprint sensor. It is determined whether to capture a darkfield candidate image at the fingerprint sensor based at least in part on the determination that a darkfield candidate image can be captured at the fingerprint sensor. Responsive to making a determination to capture the darkfield candidate image, the darkfield candidate image is captured at the fingerprint sensor.
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公开(公告)号：US20190180078A1
公开(公告)日：2019-06-13
申请号：US15837968
申请日：2017-12-11
Applicant: InvenSense, Inc.
Inventor： Daniela HALL
Abstract: In a method for enhancing quality of a fingerprint image, a plurality of images is received, where the plurality of images comprises fingerprint images. An image of the plurality of images is selected as a reference image. Subsections of each image of the plurality of images are compared to corresponding subsections of the reference image. Based on the comparing, subsections of each image of the plurality of images are selected to utilize in generating an image average of the plurality of images. An image average of the plurality of images is generated utilizing selected subsections of the plurality of images.
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