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    System and method for data sensing for compensation in an electronic display
    11.
    发明授权
    System and method for data sensing for compensation in an electronic display 有权

    公开(公告)号：US10223965B2

    公开(公告)日：2019-03-05

    申请号：US15272170

    申请日：2016-09-21

    Applicant: Apple Inc.

    Inventor： Yafei Bi ,  Mohammad B. Vahid Far

    IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/00 ,  G09G3/20

    Abstract: Provided herein are systems and methods for measurement and compensation of display panel current leakage and/or display panel noise. A pixel data signal is received at sensing and compensation circuitry. Current leakage compensation circuitry compensates for current leakage of the display panel in the data signal, while panel noise mitigation circuitry configured to reduce panel noise from the data signal. After compensating for the current leakage and reducing the panel noise, the data signal is provided to downstream circuitry for subsequent processing.

    Radio-frequency front end modules with leakage management engines
    15.
    发明授权
    Radio-frequency front end modules with leakage management engines 有权

    公开(公告)号：US12301274B2

    公开(公告)日：2025-05-13

    申请号：US17900725

    申请日：2022-08-31

    Applicant: Apple Inc.

    Inventor： Danyom Berhane ,  Brian B. Whitaker ,  Mohammad B. Vahid Far ,  Tracey L Chavers

    IPC: H04B1/525 ,  H04B1/04 ,  H04B1/44

    Abstract: An electronic device may include a transceiver, an antenna, and a front end module (FEM) coupled between the transceiver and antenna. Components on the FEM may operate on radio-frequency signals. The FEM may include a digital controller with a leakage management engine. The leakage management engine may monitor power supply voltages received by the FEM. In response to detection of a trigger condition, the leakage management engine may power off a set of the components while at least some of the FEM remains powered on. The trigger condition may be a change in the power supply voltages or a host command received from a host processor. Using the leakage management engine to power off the set of front end components may serve to minimize leakage current on the FEM, thereby maximizing battery life and shelf life for the device, without the use of bulky and expensive external load switches.

    Clock distribution techniques for micro-driver LED display panels
    16.
    发明授权
    Clock distribution techniques for micro-driver LED display panels 有权

    公开(公告)号：US10997899B1

    公开(公告)日：2021-05-04

    申请号：US15275173

    申请日：2016-09-23

    Applicant: Apple Inc.

    Inventor： Hopil Bae ,  Mahdi Farrokh Baroughi ,  Mohammad B. Vahid Far

    IPC: G09G3/32 ,  G09G3/20

    Abstract: An electronic display includes emission clock routing without the use of repeaters. This may be accomplished by providing row drivers for each emission clock signal on opposing edges of the display panel, so that each set of row drivers may provide the emission clock signal to only a portion of the micro-drivers in each row. The array of micro-drivers may be further segmented (e.g., into four or more sections, an alternating pattern, uneven sections, etc.) to provide similar advantages. Furthermore, rather than using multiplexors to provide the emission clock signals to the row drivers, the emission clock may be hardwired to the row drivers. This may reduce the number of pins and support the provision of more phases.

    Noise mitigation for display panel sensing
    17.
    发明授权
    Noise mitigation for display panel sensing 有权

    公开(公告)号：US10573211B2

    公开(公告)日：2020-02-25

    申请号：US16361018

    申请日：2019-03-21

    Applicant: Apple Inc.

    Inventor： Hung Sheng Lin ,  Shengkui Gao ,  Hyunwoo Nho ,  Chin-Wei Lin ,  Mohammad B. Vahid Far ,  Jie Won Ryu ,  Kingsuk Brahma ,  Junhua Tan ,  Sun-Il Chang ,  Shinya Ono ,  Jesse A. Richmond ,  Yafei Bi ,  Derek K. Shaeffer

    IPC: G09G3/00

    Abstract: Systems and methods are provided for differential sensing (DS), difference-differential sensing (DDS), correlated double sampling (CDS), and/or programmable capacitor matching to reduce display panel sensing noise. An electronic device may include one or more processors and an electronic display. The one or more processors may generate image data and adjust the image data based at least in part on display sensing feedback. The electronic display may employ sensing circuitry that obtains the display sensing feedback at least in part by applying test data to a pixel of a column of an active area of the display and differentially senses an electrical value of the pixel in comparison to a reference signal from a different column. This reference signal may provide a common mode noise reference, which is removed by the differential sensing and thereby enhances a quality of the sensed electrical value of the pixel.

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