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    Apparatus and method for ultrasonic fingerprint and force sensing
    23.
    发明授权
    Apparatus and method for ultrasonic fingerprint and force sensing 有权

    公开(公告)号：US11087109B1

    公开(公告)日：2021-08-10

    申请号：US16940285

    申请日：2020-07-27

    Applicant: QUALCOMM Incorporated

    Inventor： Jessica Liu Strohmann ,  Mowen Yang ,  Jae Hyeong Seo ,  Jorge Adrian Madrigal Ramirez ,  Kostadin Dimitrov Djordjev

    IPC: G06K9/00 ,  G06K9/03 ,  G06F3/043

    Abstract: A method may involve estimating a force applied by a target object on a surface, determining at least one ultrasonic fingerprint sensor parameter modification based, at least in part, on the force and updating at least one setting of an ultrasonic fingerprint sensor based, at least in part, on the ultrasonic fingerprint sensor parameter modification. The method may involve controlling the ultrasonic fingerprint sensor to transmit first and second ultrasonic waves towards the target object and receiving first and second ultrasonic receiver signals, including signals corresponding to reflections of the first and second ultrasonic waves from the target object, from the ultrasonic fingerprint sensor. The method may involve performing an authentication process based, at least in part, on the first and second ultrasonic receiver signals.

    Liveness sensing and authentication with an ultrasonic sensor system
    24.
    发明授权
    Liveness sensing and authentication with an ultrasonic sensor system 有权

    公开(公告)号：US11062010B2

    公开(公告)日：2021-07-13

    申请号：US16655039

    申请日：2019-10-16

    Applicant: QUALCOMM Incorporated

    Inventor： Soon Joon Yoon ,  Changting Xu ,  Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev

    IPC: G06F3/041 ,  G06F21/32 ,  G06K9/00 ,  G01S15/89

    Abstract: A method may involve controlling an apparatus to transmit a first ultrasonic wave by sending first electrical signals to a plurality of separate electrode elements proximate an ultrasonic transceiver layer. The method may involve receiving first electrode layer signals, corresponding to reflections of the first ultrasonic wave, from the electrode layer. The method may involve determining, based on the first electrode layer signals, a location of a target object in contact with the apparatus. The location of the target object may correspond with a proximate electrode element. The method may involve controlling the ultrasonic transceiver layer to transmit a second ultrasonic wave by sending second electrical signals to the proximate electrode element and for receiving receiver pixel signals from at least a portion of the plurality of ultrasonic receiver pixels in an area corresponding with the proximate electrode element.

    Stylus-tracking piezoelectric sensor
    25.
    发明授权
    Stylus-tracking piezoelectric sensor 有权

    公开(公告)号：US10831290B2

    公开(公告)日：2020-11-10

    申请号：US16283620

    申请日：2019-02-22

    Applicant: QUALCOMM Incorporated

    Inventor： Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev ,  Changting Xu

    IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/038

    Abstract: A stylus-tracking device may include a piezoelectric receiver or transceiver array on a first side (e.g., underneath) a display. Image data may be acquired from the piezoelectric receiver array. The image data may correspond to signals produced by the piezoelectric receiver array in response to an acoustic signal and/or a mechanical deformation caused by a target object (e.g., a stylus) in contact with a surface, such as a cover glass, proximate a second side of the display. A doublet pattern in the image data may include a first area of having signals below a threshold level and a second area having signals above the threshold level. Based on one or more doublet pattern characteristics, a position of the target object on the surface, a force of the target object on the surface and/or a first direction of movement of the target object relative to the surface may be estimated.

    Test techniques for assessing ultrasonic fingerprint sensors
    27.
    发明授权
    Test techniques for assessing ultrasonic fingerprint sensors 有权
    用于评估超声波指纹传感器的测试技术

    公开(公告)号：US09524415B2

    公开(公告)日：2016-12-20

    申请号：US14553823

    申请日：2014-11-25

    Applicant: QUALCOMM Incorporated

    Inventor： Jianwei Liu ,  Norman Satoru Himaka ,  Sherman Sebastian Antao ,  Micah Timothy Lawrence ,  David William Burns ,  Kostadin Dimitrov Djordjev

    IPC: G06K9/00 ,  G01R31/28 ,  H01H11/00

    CPC classification number: G06K9/0002 ,  G01R31/2829 ,  H01H11/0062

    Abstract: Techniques for testing ultrasonic fingerprint sensors include operating a fingerprint impress simulator that may cyclically press a contact pad of the simulator against a platen of an ultrasonic sensor under test. A control electronics arrangement may operate the ultrasonic sensor under test and the fingerprint impress simulator, and may receive ultrasonic image data from the ultrasonic sensor under test. The ultrasonic sensor may include an ultrasonic transmitter and an ultrasonic sensor array disposed between the ultrasonic transmitter and the platen. The control electronics arrangement may cause the ultrasonic transmitter to emit an ultrasonic pulse, and may receive ultrasonic image data from the ultrasonic sensor array, the ultrasonic image data being converted from a detected portion of the ultrasonic pulse.

    Abstract translation: 用于测试超声波指纹传感器的技术包括操作指纹打印模拟器，其可循环地将模拟器的接触垫压靠在被测超声波传感器的压板上。 控制电子装置可以操作被测超声波传感器和指纹打印模拟器，并且可以从被测超声波传感器接收超声波图像数据。 超声波传感器可以包括超声波发射器和设置在超声波发射器和压板之间的超声波传感器阵列。 控制电子装置可以使超声波发射器发射超声波脉冲，并且可以从超声波传感器阵列接收超声波图像数据，超声波图像数据从超声波脉冲的检测部分转换。

    ULTRASONIC IMAGING WITH ACOUSTIC RESONANT CAVITY
    29.
    发明申请
    ULTRASONIC IMAGING WITH ACOUSTIC RESONANT CAVITY 有权
    超声波成像与声学谐振腔

    公开(公告)号：US20150198699A1

    公开(公告)日：2015-07-16

    申请号：US14589783

    申请日：2015-01-05

    Applicant: QUALCOMM Incorporated

    Inventor： Nai-Kuei Kuo ,  Kostadin Dimitrov Djordjev ,  Ranjith Ranganathan ,  Nao Sugawara Chuei

    IPC: G01S7/52 ,  G01S15/02

    CPC classification number: G01S7/52017 ,  G01S15/02 ,  G06K9/0002

    Abstract: Techniques describe structures and methods for generating larger output signals and improving image quality of ultrasonic sensors by inclusion of an acoustic cavity in the sensor stack. In some embodiments, an ultrasonic sensor unit may be tuned during manufacturing or during a provisioning phase to work with different thicknesses and materials. In some embodiments, a standing wave signal may be generated using an acoustic cavity in the ultrasonic sensor unit for capturing an ultrasonic image of an object placed on a sensor surface. In some implementations, the ultrasonic sensor may include an ultrasonic transmitter, a piezoelectric receiver, a thin film transistor (TFT) layer and a TFT substrate positioned between the transmitter and the receiver, one or more adhesive layers, and optional cover materials and coatings. The thickness, density and speed of sound of the sensor materials and associated adhesive attachment layers may be used to attain the desired acoustic cavity and improved performance.

    Abstract translation: 技术描述了通过在传感器堆叠中包含声腔来产生更大输出信号和提高超声波传感器的图像质量的结构和方法。 在一些实施例中，超声波传感器单元可以在制造期间或在供应阶段期间被调整以使用不同的厚度和材料。 在一些实施例中，可以使用超声波传感器单元中的声腔来产生驻波信号，用于捕获放置在传感器表面上的物体的超声波图像。 在一些实施方案中，超声波传感器可以包括位于发射器和接收器之间的超声波发射器，压电接收器，薄膜晶体管（TFT）层和TFT衬底，一个或多个粘合剂层以及任选的覆盖材料和涂层。 可以使用传感器材料和相关联的粘合剂附着层的厚度，密度和声速来获得所需的声腔并提高性能。

    DISPLAY WITH PERIPHERALLY CONFIGURED ULTRASONIC BIOMETRIC SENSOR
    30.
    发明申请
    DISPLAY WITH PERIPHERALLY CONFIGURED ULTRASONIC BIOMETRIC SENSOR 有权
    显示与外围配置的超声波生物传感器

    公开(公告)号：US20140354596A1

    公开(公告)日：2014-12-04

    申请号：US14071362

    申请日：2013-11-04

    Applicant: QUALCOMM Incorporated

    Inventor： Kostadin Dimitrov Djordjev ,  Leonard Eugene Fennell ,  Nicholas Ian Buchan ,  David William Burns ,  Samir K. Gupta ,  Sanghoon Bae

    IPC: G06F3/042

    CPC classification number: G06F3/0421 ,  G06K9/0002

    Abstract: Various techniques and apparatuses are disclosed that provide for pixelated display modules that integrate an ultrasonic fingerprint or biometric sensing capability. In some implementations, the ultrasonic fingerprint sensor and the display components of the display module may share a common backplane. In some implementations, the ultrasonic fingerprint sensor may share a flex cable with other components in the display module. In some implementations, the ultrasonic fingerprint sensor may leverage conductive traces on a cover glass used to provide for touch input to the display module.

    Abstract translation: 公开了提供集成超声波指纹或生物特征感测能力的像素化显示模块的各种技术和装置。 在一些实施方案中，超声波指纹传感器和显示模块的显示部件可以共享共同的背板。 在一些实施方案中，超声波指纹传感器可以与显示模块中的其他部件共享柔性电缆。 在一些实施方案中，超声波指纹传感器可以利用用于提供对显示模块的触摸输入的盖玻片上的导电迹线。

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