System and method for acoustic touch and force sensing

    公开(公告)号:US11347355B2

    公开(公告)日:2022-05-31

    申请号:US15989063

    申请日:2018-05-24

    Applicant: Apple Inc.

    Abstract: Acoustic touch and/or force sensing system architectures and methods for acoustic touch and/or force sensing can be used to detect a position of an object touching a surface and an amount of force applied to the surface by the object. The position and/or an applied force can be determined using time-of-flight (TOF) techniques, for example. Acoustic touch sensing can utilize transducers (e.g., piezoelectric) to simultaneously transmit ultrasonic waves along a surface and through a thickness of a deformable material. The location of the object and the applied force can be determined based on the amount of time elapsing between the transmission of the waves and receipt of the reflected waves. In some examples, an acoustic touch sensing system can be insensitive to water contact on the device surface, and thus acoustic touch sensing can be used for touch sensing in devices that may become wet or fully submerged in water.

    Composite cover material for sensitivity improvement of ultrasonic touch screens

    公开(公告)号:US11157115B2

    公开(公告)日:2021-10-26

    申请号:US15476244

    申请日:2017-03-31

    Applicant: Apple Inc.

    Abstract: The present disclosure relates to one or more intermediate layers located on a surface of a cover material of an acoustic touch screen. In some examples, the one or more layers can include one or more intermediate layers. The one or more intermediate layers can include a first layer including a plurality of features and a second layer located between the first layer and the cover material. In a touch condition, the touch object can apply a force to the top surface of the acoustic touch sensor. The applied force can create one or more local bends causing the plurality of features to move closer to the cover material and causing one or more surface discontinuities in the cover material. The acoustic waves can undergo reflections (e.g., causing the signal to be attenuated) due to the discontinuities located in the path of the wave propagation.

    Ultrasonic touch detection through display

    公开(公告)号:US10802651B2

    公开(公告)日:2020-10-13

    申请号:US16256942

    申请日:2019-01-24

    Applicant: Apple Inc.

    Abstract: This relates to system architectures, apparatus and methods for acoustic touch detection (touch sensing) and exemplary applications of the system architectures, apparatus and methods. In some examples, the acoustic touch sensing techniques described herein can be used on a glass surface of a display or touch screen. In some examples, an acoustic touch sensing system can be configured to be insensitive to contact on the device surface by water, and thus acoustic touch sensing can be used for touch sensing in devices that are likely to become wet or fully submerged in water.

    Ultrasonic fingerprint sensor in display bezel

    公开(公告)号:US09984271B1

    公开(公告)日:2018-05-29

    申请号:US14514308

    申请日:2014-10-14

    Applicant: Apple Inc.

    CPC classification number: G06K9/0002 G06F3/0436

    Abstract: An electronic device that includes an enclosure having an external surface and a first array of ultrasonic transducers arranged along a first direction and a second array of ultrasonic transducers arranged along a second direction. The first array of ultrasonic transducers may be configured to produce a surface wave along the external surface. A set of scattered waves may be created by the touch on the external surface. The second array of ultrasonic transducers may be configured to receive a portion of the set of scattered waves and produce an output. The device may also include a processing unit that is configured to identify the touch using the output. The processing unit may be further configured to create a reconstruction of at least a portion of a fingerprint associated with the touch on the cover, and to identify the fingerprint using the reconstruction.

    MOBILE DEVICE WITH ULTRASOUND RANGING
    5.
    发明申请
    MOBILE DEVICE WITH ULTRASOUND RANGING 审中-公开
    具超声波范围的移动设备

    公开(公告)号:US20140160893A1

    公开(公告)日:2014-06-12

    申请号:US13794492

    申请日:2013-03-11

    Applicant: APPLE INC.

    CPC classification number: H04B11/00 H04M1/2155 H04M1/7253 H04M1/737

    Abstract: Mobile devices with ultrasound ranging are disclosed. A mobile device with ultrasound ranging can include a multifunctional component capable of performing multiple functions in the device, where the component can function as an ultrasound transmitter capable of transmitting an ultrasound signal to a proximate device. In some examples, the component can also function as a power button capable of powering the device up and down. In some examples, the component can also function as a home button capable of causing a home page to display on the device. The mobile device can further include an ultrasound receiver capable of receiving an ultrasound signal from the proximate device, where the device can calculate a range of the proximate device based on a time lapse associated with the received ultrasound signal.

    Abstract translation: 公开了具有超声波测距的移动设备。 具有超声波测距的移动设备可以包括能够在设备中执行多个功能的多功能部件,其中该部件可以用作能够将超声信号发送到邻近设备的超声发射机。 在一些示例中,组件还可以用作能够上下驱动设备的电源按钮。 在一些示例中,组件还可以用作能够使主页在设备上显示的主按钮。 移动设备还可以包括能够从邻近设备接收超声信号的超声波接收器,其中设备可以基于与所接收的超声信号相关联的时间流逝来计算邻近设备的范围。

    Differential acoustic touch and force sensing

    公开(公告)号:US11144158B2

    公开(公告)日:2021-10-12

    申请号:US15988991

    申请日:2018-05-24

    Applicant: Apple Inc.

    Abstract: Acoustic touch and/or force sensing system architectures and methods for acoustic touch and/or force sensing can be used to detect a position of an object touching a surface and an amount of force applied to the surface by the object. The position and/or an applied force can be determined using time-of-flight (TOF) techniques, for example. Acoustic touch sensing can utilize transducers (e.g., piezoelectric) to simultaneously transmit ultrasonic waves along a surface and through a thickness of a deformable material. The location of the object and the applied force can be determined based on the amount of time elapsing between the transmission of the waves and receipt of the reflected waves. In some examples, an acoustic touch sensing system can be insensitive to water contact on the device surface, and thus acoustic touch sensing can be used for touch sensing in devices that may become wet or fully submerged in water.

    Acoustic imaging system architecture

    公开(公告)号:US11048902B2

    公开(公告)日:2021-06-29

    申请号:US15239455

    申请日:2016-08-17

    Applicant: Apple Inc.

    Abstract: An acoustic imaging system includes multiple transducers disposed to circumscribe a portion of substrate. An acoustic imaging system also includes a controller and an image resolver. The transducers convert electrical signals into mechanical energy and/or mechanical energy into electrical signals. The controller is adapted to apply an electrical signal to the transducers which, in response, induce a mechanical wave, such as a surface wave, into the circumscribed portion. The controller is also adapted to receive electrical signals from the transducers. The image resolver uses the electrical signals received by the controller in order to construct an image of an object in physical contact with the substrate.

    Annular piezoelectric structure for ultrasonic touch sensing

    公开(公告)号:US10725573B2

    公开(公告)日:2020-07-28

    申请号:US16056403

    申请日:2018-08-06

    Applicant: Apple Inc.

    Abstract: Acoustic touch sensing systems can include a mechanically integrated structure including multiple acoustic transducers. For example, an annular structure including one or more piezoelectric segments can be fabricated and then coupled to a front crystal/cover glass. A single structure can simplify the structural integration of the device, can provide a mechanically reliable and stable structure for improved structural integrity of the system, and can provide for improved water sealing for a waterproof or water resistant device. The piezoelectric material in the annular structure can be shear poled such that a poling direction of the piezoelectric material can follow the curvature of the annular piezoelectric structure.

    Ultrasound ranging for mobile devices

    公开(公告)号:US10707971B2

    公开(公告)日:2020-07-07

    申请号:US13794383

    申请日:2013-03-11

    Applicant: Apple Inc.

    Abstract: Ultrasonic ranging for mobile devices is disclosed. A mobile device using ultrasonic ranging can include an ultrasound transmitter capable of emitting an ultrasound signal for detection by a proximate device and an ultrasound receiver capable of receiving an ultrasound signal from the proximate device. The mobile device can then use a time lapse associated with one or both of these ultrasound signals to find a range to the proximate device.

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