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    Integrated driver and controller for haptic engine
    11.
    发明授权
    Integrated driver and controller for haptic engine 有权

    公开(公告)号：US10110152B1

    公开(公告)日：2018-10-23

    申请号：US15721524

    申请日：2017-09-29

    Applicant: Apple Inc.

    Inventor： Arman Hajati

    IPC: H02K41/02 ,  H02P25/032 ,  H02P27/08 ,  H03F3/217 ,  H03F3/187

    Abstract: An integrated circuit (IC) chip for driving a mass of a linear resonant actuator (LRA) using low-latency closed-loop control is described. The IC chip includes class-D amplifier circuitry configured to provide to coils of the LRA, a driving signal, which has a pulse-width modulation configured to control a position of the mass as a function of time. The driving signal has a frequency in a range of 10-100 kH, and the pulse-width modulation has a bandwidth smaller than 1 kHz. The IC chip also includes class-D controller circuitry configured to process (i) a position-monitoring signal, which (a) is received from position sensors of the LRA and (b) corresponds to the position of the mass, and (ii) a drive-monitoring signal, which relates to the driving signal, to obtain a digital driving signal. The class-D amplifier circuit is configured to amplify the digital driving signal to obtain the analog driving signal.

    Haptic actuator including slidably coupled masses and related methods
    14.
    发明授权
    Haptic actuator including slidably coupled masses and related methods 有权

    公开(公告)号：US09619031B1

    公开(公告)日：2017-04-11

    申请号：US14858710

    申请日：2015-09-18

    Applicant: APPLE INC.

    Inventor： Arman Hajati ,  Jonah A. Harley

    IPC: G08B21/00 ,  G06F3/01 ,  H02K33/12 ,  G08B6/00

    CPC classification number: G06F3/016 ,  G08B6/00 ,  H02K33/12

    Abstract: A haptic actuator may include a housing having a top and a bottom, and first and second coils carried by the top and bottom, respectively, of the housing. The haptic actuator may also include a field member carried by the housing. The field member may include a permanent magnet between the first and second coils, first and second ends, and a first mass between the first end and the permanent magnet, and a second mass between the second end and the permanent magnet. A first shaft may slidably couple the first mass to the housing, and a second shaft may slidably couple the second mass to the housing. The haptic actuator may also include a first set of biasing members between the first end of the field member and the housing and a second set of biasing members between the second end of the field member and the housing.

    Motion sensing using hall voltage signals
    16.
    发明授权
    Motion sensing using hall voltage signals 有权

    公开(公告)号：US10859407B2

    公开(公告)日：2020-12-08

    申请号：US16581661

    申请日：2019-09-24

    Applicant: Apple Inc.

    Inventor： Denis G. Chen ,  Arman Hajati ,  Manoj K. Bhattacharyya

    IPC: G01D5/20 ,  G01D5/14

    Abstract: An integrated circuit (IC) chip including an array of asymmetrically distributed magnetic field sensing elements. Additionally, an integrated circuit (IC) chip includes a substrate, a sensing coil supported by the substrate and enclosing a portion of substrate, and a Hall effect sensor supported by the portion of the substrate enclosed by the sensing coil.

    Scanning Display Systems
    19.
    发明申请
    Scanning Display Systems 审中-公开

    公开(公告)号：US20200090569A1

    公开(公告)日：2020-03-19

    申请号：US16554334

    申请日：2019-08-28

    Applicant: Apple Inc.

    Inventor： Arman Hajati ,  Robert S. Upton ,  Yuval Gerson

    IPC: G09G3/02 ,  G06F3/01 ,  G02B26/10 ,  G02B26/08 ,  G02B27/30 ,  G02B6/42

    Abstract: A display system may display image frames. The system may include multiple sets of laser dies. Each set of laser dies may emit a respective set of beams of light to a photonic integrated circuit. Each set of beams may include light in at least three wavelength ranges that include visible and/or infrared wavelengths. Channels in the photonic integrated circuit may receive the sets of beams with a first pitch and may emit the set of beams with a second pitch that is finer than the first pitch and at a given angular separation to tangential and sagittal axis scanning mirrors.

    Headphones With Orientation Sensors
    20.
    发明申请
    Headphones With Orientation Sensors 审中-公开

    公开(公告)号：US20190238968A1

    公开(公告)日：2019-08-01

    申请号：US16194130

    申请日：2018-11-16

    Applicant: Apple Inc.

    Inventor： Arman Hajati ,  Supratik Datta

    IPC: H04R1/10

    CPC classification number: H04R1/1041 ,  H04R1/1008 ,  H04R1/1058 ,  H04R5/033 ,  H04R5/04 ,  H04R2201/023

    Abstract: An electronic device such as a pair of headphones may be provided with ear cups having speakers for playing audio to a user. Capacitive sensor electrodes may be used in capturing capacitive sensor ear images that are processed by a machine learning classifier to determine whether the headphones are being worn in a reversed or unreversed orientation. The capacitive sensor electrodes may include grill electrodes that overlap at least part of a speaker grill, cushion electrodes that make capacitive sensor measurements through ring-shaped ear cup cushions that surround the speaker grills, and ring electrodes. The ring electrodes may be formed from metal traces on a flexible printed circuit. The flexible printed circuit may include a portion that wraps around each speaker grill and that is surrounded by a corresponding one of the cushions.

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