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    Multiple electrode plane wave generator
    63.
    发明授权
    Multiple electrode plane wave generator 有权

    公开(公告)号：US09911911B2

    公开(公告)日：2018-03-06

    申请号：US14557223

    申请日：2014-12-01

    Applicant: QUALCOMM Incorporated

    Inventor： John Keith Schneider ,  Jack Conway Kitchens, II

    IPC: H01L41/047 ,  B06B1/06 ,  H01L41/107

    CPC classification number: H01L41/047 ,  B06B1/0611 ,  H01L41/107

    Abstract: The invention may be embodied as an ultrasonic plane wave generator having a first sheet of piezoelectric material and a second sheet of piezoelectric material. A shared electrode may be between the first sheet and the second sheet. A first electrode set may have a plurality of electrodes, and these electrodes may be positioned with respect to the first sheet to form a set of wave generators. A wave generator in this first wave generator set may include the shared electrode, the first sheet, and one of the electrodes in the first electrode set. A second electrode set may have a plurality of electrodes, and these electrodes may be positioned with respect to the second sheet to form another set of wave generators. A wave generator in this second wave generator set may include the shared electrode, the second sheet, and one of the electrodes in the second electrode set.

    SPOOF DETECTION BY ULTRASONIC SUBDERMAL PROBE
    64.
    发明申请
    SPOOF DETECTION BY ULTRASONIC SUBDERMAL PROBE 审中-公开

    公开(公告)号：US20170285157A1

    公开(公告)日：2017-10-05

    申请号：US15629584

    申请日：2017-06-21

    Applicant: QUALCOMM Incorporated

    Inventor： Jack Conway Kitchens, II ,  John Keith Schneider ,  Stephen Michael Gojevic ,  Timothy Alan Dickinson ,  Philip John Schneider ,  Evan Michael Breloff ,  Evan Robert Hildreth

    IPC: G01S7/539 ,  G06K9/00

    CPC classification number: G01S7/539 ,  G06K9/00107 ,  G06K9/0012 ,  G06K9/00899

    Abstract: Methods and systems of determining whether an object is alive, and therefore part of a live individual, are described. An object having an outer surface (e.g. a friction-ridge surface of a finger) and internal parts (e.g. tissue layer, papillae, blood vessels, fat, muscle, nail and bone) is scanned by a system having a transmitter, receiver and computer. One such system has a substantially planar piezoelectric transmit-layer, an ultrasonic receiver array having a plurality of receivers, and a platen. The transmit layer is caused to produce an ultrasound plane-wave traveling toward the object residing on the platen. Using the ultrasonic receiver, ultrasonic energy that has been reflected from the object is detected. The detected ultrasonic energy is analyzed to provide an analysis result, and the analysis result is compared to a template. A determination is made as to whether the analysis result and the template are similar, and the object is declared to be alive if the analysis result is determined to be similar to the template.

    FAST, HIGH-ACCURACY, LARGE-SCALE FINGERPRINT VERIFICATION SYSTEM
    67.
    发明申请
    FAST, HIGH-ACCURACY, LARGE-SCALE FINGERPRINT VERIFICATION SYSTEM 有权

    公开(公告)号：US20170091526A1

    公开(公告)日：2017-03-30

    申请号：US14866259

    申请日：2015-09-25

    Applicant: Qualcomm Incorporated

    Inventor： Fitzgerald John Archibald ,  John Keith Schneider ,  Frederick Kiefer

    IPC: G06K9/00

    CPC classification number: G06K9/00093 ,  G06K9/00013 ,  G06K9/00073

    Abstract: Apparatuses, systems, and techniques are disclosed for rapidly identifying potential candidates within a pool of enrolled fingerprint images for unconstrained fingerprint matching with an inquiry fingerprint. The techniques may include applying one or more window regions to both enrolled and inquiry fingerprint images and determining a minutiae score for each such window region based on the minutiae within that window region. One or more components of the minutiae score for window regions of the inquiry image may then be compared against similar components in the minutiae scores for window regions of the enrolled fingerprint images, and enrolled fingerprint images having window regions with minutiae scores sufficiently similar to the minutiae score of a window region of the inquiry fingerprint image may be selected for later unconstrained matching with the inquiry fingerprint image.

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