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

IPC: G06F3/041 ,  G06F3/043

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.

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.

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

IPC: G06K9/28 ,  G06K9/00 ,  G06F3/043 ,  G01S15/89

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.

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。