System for managing a fingerprint sensor

    公开(公告)号:US11676423B1

    公开(公告)日:2023-06-13

    申请号:US17661234

    申请日:2022-04-28

    CPC classification number: G06V40/50 G06F3/14 G06V40/1306 G06V40/1347

    Abstract: Some disclosed methods involve maintaining a data structure that includes historical fingerprint location data. The historical fingerprint location data may include information corresponding to prior instances of fingerprint image data obtained from each of a plurality of fingerprint sensor areas. Some such methods involve identifying, based at least in part on the historical fingerprint location data, a selected fingerprint sensor area, providing a user prompt to place a digit within or on the selected fingerprint sensor area, and obtaining current fingerprint image data of the digit from the selected fingerprint sensor area. In some examples, the historical fingerprint location data indicate a number of prior instances during which prior fingerprint image data has been obtained from each fingerprint sensor area of the plurality of fingerprint sensor areas. In some such examples, the identifying is based, at least in part, on the number of prior instances.

    Fingerprint sensor configured for avoidance of latent fingerprints

    公开(公告)号:US11348357B1

    公开(公告)日:2022-05-31

    申请号:US17248267

    申请日:2021-01-15

    Abstract: A method may include prompting a user to place their finger within a given sub-region of a fingerprint sensing surface and then obtaining the user's fingerprint. The given sub-region may be selected based on a determined or estimated probability that the given sub-region contains a latent fingerprint. As examples, the given sub-region may be determined randomly, pseudo-randomly, or based on information in a log of historical touch and/or fingerprint locations. The method may further involve tracking which sub-regions of the fingerprint sensing surface may potentially have latent fingerprints. The method may involve prompting the user to wipe one or more sub-regions of the fingerprint sensing surface when more than a predetermined fraction of the fingerprint-sensing surface has been used to obtain fingerprint images.

    Ultrasonic fingerprint sensor technologies and methods for multi-surface displays

    公开(公告)号:US11887397B2

    公开(公告)日:2024-01-30

    申请号:US17443938

    申请日:2021-07-28

    CPC classification number: G06V40/1306 G06F3/043 G06F21/32 G06V40/1365

    Abstract: Apparatuses, systems, and methods are provided for ultrasonic fingerprint sensors that feature an ultrasonic transmitter and multiple subsets of ultrasonic sensor pixels, each subset of ultrasonic sensor pixels associated with a different ultrasonically sensitive display surface, at least two of which are non-coplanar with one another. In some implementations, the ultrasonically sensitive display surfaces may be provided by different portions of a flexible display that has been flexed into a configuration in which two or more portions thereof are non-coplanar. In some instances, a controller may be provided that selectively reads ultrasonic sensor signals from subset(s) of the ultrasonic sensor pixels that are associated with the ultrasonically sensitive display surfaces that a touch-sensing system indicates are experiencing touch events.

    Randomized multi-fingerprint authentication

    公开(公告)号:US11645865B2

    公开(公告)日:2023-05-09

    申请号:US17249551

    申请日:2021-03-04

    Abstract: Some disclosed methods involve randomly or pseudo-randomly selecting one fingerprint authentication case from a plurality of fingerprint authentication cases stored in a memory, each of the fingerprint authentication cases corresponding to one or more fingerprints used during an authentication process, the fingerprint authentication cases including a plurality of multiple-fingerprint authentication cases for which two or more fingerprints are used during the authentication process. Upon determining that the selected fingerprint authentication case is a multiple-fingerprint authentication case, some methods involve controlling a display system to provide a multiple-fingerprint authentication graphical user interface (GUI) indicating at least two digit placement areas corresponding with a fingerprint sensor system area of a fingerprint sensor system, controlling the fingerprint sensor system to obtain fingerprint sensor data corresponding to each of the at least two digit placement areas and performing the authentication process based, at least in part, on the fingerprint sensor data.

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