公开(公告)号：US20190228206A1

公开(公告)日：2019-07-25

申请号：US16236107

申请日：2018-12-28

Applicant: InvenSense, Inc.

Inventor： Jonathan BAUDOT ,  Etienne De FORAS

IPC: G06K9/00 ,  H04N5/232

Abstract: In a method for generating an estimated fingerprint image, a ridge/valley pattern of a fingerprint of a finger is received. A sensor image including a partial fingerprint of the finger is received. Ridge/valley characteristics of the fingerprint are extracted from the sensor image including the partial fingerprint. An estimated fingerprint image is generated based at least on the ridge/valley pattern of the fingerprint and the ridge/valley characteristics of the fingerprint.

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.

公开(公告)号：US20200234031A1

公开(公告)日：2020-07-23

申请号：US16748578

申请日：2020-01-21

Applicant: InvenSense, Inc.

Inventor： Etienne De FORAS

IPC: G06K9/00

Abstract: In a method for operating a fingerprint sensor, a fingerprint capture operation is performed on a fingerprint of a finger contacting the fingerprint sensor. A finger lift action is detected. It is determined whether a latent fingerprint remains on a contact surface of the fingerprint sensor subsequent the finger lift action. If it is determined that a latent fingerprint remains on the contact surface of the fingerprint sensor subsequent the finger lift action, instruction on addressing the latent fingerprint is provided.

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.