AIR/OBJECT DETERMINATION FOR BIOMETRIC SENSORS
    5.
    发明申请
    AIR/OBJECT DETERMINATION FOR BIOMETRIC SENSORS 有权
    生物传感器的空气/物体确定

    公开(公告)号:US20160063296A1

    公开(公告)日:2016-03-03

    申请号:US14928898

    申请日:2015-10-30

    CPC classification number: G06T5/20 G06K9/0002 G06K9/00067 G06K9/00926

    Abstract: A fingerprint sensing apparatus may include a fingerprint sensor system and a control system capable of receiving fingerprint sensor data from the fingerprint sensor system. The control system may be capable of determining fingerprint sensor data blocks for at least a portion of the fingerprint sensor data and of calculating statistical variance values for fingerprint sensor data corresponding to each of the fingerprint sensor data blocks. The control system may be capable of determining, based at least in part the statistical variance values, whether an object is positioned proximate a portion of the fingerprint sensor system.

    Abstract translation: 指纹感测装置可以包括指纹传感器系统和能够从指纹传感器系统接收指纹传感器数据的控制系统。 控制系统可以能够为指纹传感器数据的至少一部分确定指纹传感器数据块,并且可以计算对应于每个指纹传感器数据块的指纹传感器数据的统计方差值。 控制系统可以能够至少部分地基于统计方差值来确定物体是否位于指纹传感器系统的一部分附近。

    ULTRASONIC RECEIVER WITH COATED PIEZOELECTRIC LAYER
    6.
    发明申请
    ULTRASONIC RECEIVER WITH COATED PIEZOELECTRIC LAYER 审中-公开
    超声波接收器与涂层压电层

    公开(公告)号:US20140355387A1

    公开(公告)日:2014-12-04

    申请号:US14175876

    申请日:2014-02-07

    Abstract: This disclosure provides systems, methods and apparatus related to an ultrasonic receiver for detecting ultrasonic energy received at a first surface of the ultrasonic receiver. The ultrasonic receiver includes an array of pixel circuits disposed on a substrate, each pixel circuit in the array including at least one thin film transistor (TFT) element and having a pixel input electrode electrically coupled to the pixel circuit. The ultrasonic receiver is fabricated by forming a piezoelectric layer so as to be in electrical contact with the pixel input electrodes. Forming the piezoelectric layer includes coating a solution containing a polymer onto the array of pixel circuits, crystallizing the polymer to form a crystallized polymer layer and poling the crystallized polymer layer.

    Abstract translation: 本公开提供了与用于检测在超声波接收器的第一表面处接收的超声能量的超声波接收器有关的系统,方法和装置。 超声波接收器包括设置在基板上的像素电路阵列,阵列中的每个像素电路包括至少一个薄膜晶体管(TFT)元件,并且具有电耦合到像素电路的像素输入电极。 通过形成压电层以与像素输入电极电接触来制造超声波接收器。 形成压电层包括将包含聚合物的溶液涂覆到像素电路阵列上,使聚合物结晶以形成结晶的聚合物层并极化结晶的聚合物层。

    Liveness detection via ultrasonic ridge-valley tomography

    公开(公告)号:US09946914B1

    公开(公告)日:2018-04-17

    申请号:US15356424

    申请日:2016-11-18

    CPC classification number: G06K9/0002 G06K9/0008

    Abstract: An apparatus may include an ultrasonic sensor system and a control system. The control system may be configured for controlling the ultrasonic sensor system to obtain first ultrasonic data from at least a part of a target object proximate a surface of the apparatus. The control system may be configured for receiving the first ultrasonic data from the ultrasonic sensor system and for identifying one or more fingerprint ridge features and one or more fingerprint valley features corresponding to the first ultrasonic data. The control system may be configured for determining, based on the first ultrasonic data, one or more fingerprint valley time intervals corresponding to a depth of one or more fingerprint valley features and for performing a spoof detection process based, at least in part, on the one or more fingerprint valley time intervals.

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