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公开(公告)号：US12099683B2
公开(公告)日：2024-09-24
申请号：US18325565
申请日：2023-05-30
Applicant: Apple Inc.
Inventor： Marduke Yousefpor , Mohammad Yeke Yazdandoost , Aaron Scott Tucker , Marcus Yip , Ehsan Khajeh , Brian Michael King , Giovanni Gozzini
CPC classification number: G06F3/04166 , G06F3/043 , G06F3/0436 , G06F2203/04105 , G06F2203/04106
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.
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公开(公告)号：US11669199B2
公开(公告)日：2023-06-06
申请号：US17450441
申请日：2021-10-08
Applicant: Apple Inc.
Inventor： Marduke Yousefpor , Mohammad Yeke Yazdandoost , Aaron Scott Tucker , Marcus Yip , Ehsan Khajeh , Brian Michael King , Giovanni Gozzini
CPC classification number: G06F3/04166 , G06F3/043 , G06F3/0436 , G06F2203/04105 , G06F2203/04106
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.
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公开(公告)号：US10949030B2
公开(公告)日：2021-03-16
申请号：US16123757
申请日：2018-09-06
Applicant: Apple Inc.
Inventor： Ehsan Khajeh , Aaron Scott Tucker , Brian Michael King , Marcus Yip
IPC: G06F3/043 , G06F3/041 , G06F1/3234
Abstract: Acoustic transducers can be formed form piezoelectric materials including one or more curved (non-linear) segments. The piezoelectric material can be shear poled such that a poling direction of the piezoelectric material can follow the curvature of the piezoelectric material. The piezoelectric material can also have a unidirectional poling direction. In some examples, the piezoelectric material can be a closed ring with a circular or partially circular shape. A shear poling process for a piezoelectric material with curves can include shear poling segments of the piezoelectric material with one or more sets of poling electrodes. The poling electrodes of a respective one of the one or more sets of poling electrodes can be coupled to the same side of the piezoelectric material.
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公开(公告)号：US10275638B1
公开(公告)日：2019-04-30
申请号：US15274944
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Marduke Yousefpor , Mohammad Yeke Yazdandoost , Brian Michael King , Aaron Tucker , Marcus Yip , Ehsan Khajeh
Abstract: An acoustic imaging system includes multiple acoustic transducers disposed to circumscribe a portion of imaging surface. An acoustic imaging system also includes a controller and an image resolver. The acoustic 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 acoustic 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 acoustic 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 imaging surface.
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公开(公告)号：US09904836B2
公开(公告)日：2018-02-27
申请号：US14823928
申请日：2015-08-11
Applicant: Apple Inc.
Inventor： Mohammad Yeke Yazdandoost , Brian Michael King , Marduke Yousefpor , Marcus Yip
CPC classification number: G06K9/0002
Abstract: An acoustic imaging system can include an array of transducers in acoustic communication with a substrate configured to receive a subject for imaging. The transducers can independently or cooperatively send an acoustic pulse into the substrate toward the subject. In many examples, a number of adjacently-positioned transducers are activated substantially simultaneously so as to generate a plane wave into the substrate. After the plane wave has had an opportunity to propagate through the substrate, reflect from the top surface, and propagate through the substrate again, the electrical signals can be obtained from the transducers and an image of the subject can be assembled. In many embodiments, the plurality of transducers can be driven and read in groups such as non-intersecting (disjoint) sets or subarrays.
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Patent Agency Ranking
公开(公告)号：US20170053151A1
公开(公告)日：2017-02-23
申请号：US15239455
申请日：2016-08-17
Applicant: Apple Inc.
Inventor： Mohammad Yeke Yazandoost , Giovanni Gozzini , Brian Michael King , Marcus Yip , Marduke Yousefpor , Ehsan Khajeh , Aaron Tucker
IPC: G06K9/00 , A61B8/00 , A61B5/1172
CPC classification number: G06K9/0002 , A61B5/1172 , A61B5/6898 , A61B8/00 , B06B1/0207
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.
Abstract translation: 声学成像系统包括多个换能器，其设置成外接一部分基底。 声学成像系统还包括控制器和图像解析器。 传感器将电信号转换为机械能和/或机械能转换为电信号。 控制器适于将电信号施加到换能器，换能器作为响应将诸如表面波的机械波引入外接部分。 控制器还适于从换能器接收电信号。 图像解析器使用由控制器接收的电信号，以构建与基板物理接触的物体的图像。
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公开(公告)号：US11861115B2
公开(公告)日：2024-01-02
申请号：US17664398
申请日：2022-05-20
Applicant: Apple Inc.
Inventor： Mohammad Yeke Yazdandoost , Giovanni Gozzini , Brian Michael King , Marcus Yip , Ehsan Khajeh , Aaron Scott Tucker
IPC: G06F3/044 , G06F3/043 , G06F1/16 , G06F3/0354
CPC classification number: G06F3/044 , G06F1/1605 , G06F1/1656 , G06F3/03545 , G06F3/0436 , G06F2203/04105
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.
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公开(公告)号：US11422113B2
公开(公告)日：2022-08-23
申请号：US16917779
申请日：2020-06-30
Applicant: Apple Inc.
Inventor： Ehsan Khajeh , Brian Michael King , George Ho Yin Mak , Marcus Yip , Giovanni Gozzini
Abstract: An ultrasonic touch sensing system that uses both compressional and shear waves for touch and water detection is disclosed. When no touch or water is present, less shear and compressional wave energy is absorbed, so both shear and compressional wave reflections do not have significant amplitude decreases. When a finger is in contact with the sensing plate, both shear and compressional wave energy is absorbed, so both shear and compressional wave reflections have significant amplitude decreases. When water is in contact with the sensing plate, compressional energy is absorbed but little or no shear wave energy is absorbed, so while compressional wave reflections have significant amplitude decreases, shear wave reflections do not. From these amplitudes, a determination can be made as to whether no touch is present on the sensing plate, whether a touch is present on the sensing plate, or whether water is present on the sensing plate.
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公开(公告)号：US11366552B2
公开(公告)日：2022-06-21
申请号：US16268886
申请日：2019-02-06
Applicant: Apple Inc.
Inventor： Ehsan Khajeh , Aaron Scott Tucker , Brian Michael King , Marcus Yip
Abstract: A polarizer disposed between a transducer and a surface in which acoustic waves propagate can be used to filter out certain types of acoustic energy. For example, the polarizer can be used with a shear-polarized transducer to pass shear waves and filter out compressional waves that may interact with water, thereby improving water rejection. In some examples, the polarizer can include one or more layers of piezoelectric material with a poling direction different than (e.g., orthogonal to) the poling direction of the transducer. Energy of compressional waves may be extracted by one or more external electric circuits. In some examples, the polarizer can be a magneto-elastic polarizer. In some examples, the polarizer can be a mechanical polarizer.
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公开(公告)号：US11334196B2
公开(公告)日：2022-05-17
申请号：US16523958
申请日：2019-07-26
Applicant: Apple Inc.
Inventor： Marcus Yip , Aaron Scott Tucker , Ehsan Khajeh , Brian Michael King
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.
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