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公开(公告)号：US20210064177A1
公开(公告)日：2021-03-04
申请号：US16997899
申请日：2020-08-19
Applicant: Apple Inc.
Inventor： Ehsan KHAJEH , George Ho Yin MAK , Marcus YIP , Brian Michael KING , Aaron Scott TUCKER , Jason S. GRIESBACH , Paul X. WANG , Alex Joseph LEHMANN
Abstract: Ultrasonic force detection systems and methods can be based on propagation of ultrasonic waves in a user's body (e.g., in a user's digit). An amount of force can be determined using time-of-flight (TOF) techniques of one or more ultrasonic waves propagating in the user's body. In some examples, an electronic device including a transducer can be coupled to a digit, and can transmit ultrasonic waves into the digit. As the wave propagates through the thickness of the digit, a reflection of at least a portion of the transmitted wave can occur due to the bone and/or due to reaching the opposite side of the digit (e.g., finger pad). One or more reflections can be measured to determine the amount of force.
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公开(公告)号：US20190235656A1
公开(公告)日：2019-08-01
申请号：US16256942
申请日：2019-01-24
Applicant: Apple Inc.
Inventor： Ehsan KHAJEH , Aaron Scott TUCKER , Brian Michael KING , George Ho Yin MAK , Marcus YIP , Mohammad YEKE YAZDANDOOST
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.
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公开(公告)号：US20180032211A1
公开(公告)日：2018-02-01
申请号：US15663588
申请日：2017-07-28
Applicant: Apple Inc.
Inventor： Brian Michael KING , Mohammad YEKE YAZDANDOOST , Ehsan KHAJEH , Aaron Scott TUCKER , Giovanni GOZZINI , Marcus YIP , Marduke YOUSEFPOR , Digvijay JADHAV , Indranil SEN , Mohit NARANG , Yi JIANG , Vahid MAJIDZADEH BAFAR , Mansour KERAMAT , Hao XU
CPC classification number: G06F3/0436 , G06F1/1694 , G06F1/1698 , G06F1/3231 , G06F1/325 , G06F1/3262 , G06F3/0418 , G06F3/0433 , G06F2200/1637 , G06F2203/04104 , G06F2203/04106 , H01Q1/002 , H01Q1/52 , H01Q7/005 , Y02D10/173
Abstract: Acoustic touch detection (touch sensing) system architectures and methods can be used to detect an object touching a surface. Position of an object touching a surface can be determined using time-of-flight (TOF) bounding box techniques, or acoustic image reconstruction techniques, for example. Acoustic touch sensing can utilize transducers, such as piezoelectric transducers, to transmit ultrasonic waves along a surface and/or through the thickness of an electronic device. Location of the object can be determined, for example, based on the amount of time elapsing between the transmission of the wave and the detection of the reflected wave. An object in contact with the surface can interact with the transmitted wave causing attenuation, redirection and/or reflection of at least a portion of the transmitted wave. Portions of the transmitted wave energy after interaction with the object can be measured to determine the touch location of the object on the surface of the device.
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公开(公告)号：US20180341359A1
公开(公告)日：2018-11-29
申请号：US15989063
申请日：2018-05-24
Applicant: Apple Inc.
Inventor： Ehsan KHAJEH , Brian Michael KING , Mohammad YEKE YAZDANDOOST , Marcus YIP , Aaron Scott TUCKER , Marduke YOUSEFPOR , Peter Jon KARDASSAKIS , Giovanni GOZZINI , Supratik DATTA , Asif HUSSAIN
IPC: G06F3/041 , G06F1/16 , G06F3/044 , G06F3/0354
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：US20180284947A1
公开(公告)日：2018-10-04
申请号：US15476244
申请日：2017-03-31
Applicant: Apple Inc.
Inventor： Ehsan KHAJEH , Brian Michael KING , Marcus YIP , Aaron Scott TUCKER , Mohammad YEKE YAZDANDOOST , Marduke YOUSEFPOR , Giovanni GOZZINI
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.
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Patent Agency Ranking
公开(公告)号：US20220276733A1
公开(公告)日：2022-09-01
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
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：US20190243047A1
公开(公告)日：2019-08-08
申请号：US16268886
申请日：2019-02-06
Applicant: Apple Inc.
Inventor： Ehsan KHAJEH , Aaron Scott TUCKER , Brian Michael KING , Marcus YIP
CPC classification number: G02B5/3041 , G06F3/0436
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：US20230384892A1
公开(公告)日：2023-11-30
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 , G06F2203/04106 , 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：US20220075497A1
公开(公告)日：2022-03-10
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
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：US20210404991A1
公开(公告)日：2021-12-30
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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