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    Preemptive refresh for reduced display judder
    2.
    发明授权
    Preemptive refresh for reduced display judder 有权

    公开(公告)号：US11615727B2

    公开(公告)日：2023-03-28

    申请号：US17680103

    申请日：2022-02-24

    Applicant: Apple Inc.

    Inventor： Kevin W. Sliech ,  Jason N. Gomez ,  David A. Hartley ,  Chengrui Le ,  Paolo Sacchetto ,  Arthur L. Spence

    IPC: G09G3/20

    Abstract: In an embodiment, an electronic device includes an electronic display. The electronic display provides a programmable latency period in response to receiving a first image frame corresponding to first image frame data. The electronic display also displays the first image frame after the programmable latency period and during display of the first image frame, receives a second image frame corresponding to second image frame data. The electronic display also repeats display of the first image frame in response to receiving the second image frame.

    Display pixel charge accumulation compensation systems and methods
    3.
    发明授权
    Display pixel charge accumulation compensation systems and methods 有权

    公开(公告)号：US10410587B2

    公开(公告)日：2019-09-10

    申请号：US15274035

    申请日：2016-09-23

    Applicant: APPLE INC.

    Inventor： Ilie Garbacea ,  Chaohao Wang ,  Chengrui Le

    IPC: G09G3/3291 ,  G09G3/36 ,  G09G3/3225

    Abstract: Systems and methods for improving displayed image quality of an electronic display including a display pixel that displays an image frame based at least in part on an analog electrical signal supplied to the display pixel are provided. In some embodiments, control circuitry instructs the electronic display to display the image frame based at least in part on an expected charge accumulation in the display pixel determined using a charge accumulation model that describes one or more electric fields expected to be present in the display pixel when displaying the image frame and that provides a display pixel state indicative of expected charge accumulation in the display pixel when the image frame is to be displayed based at least in part on the one or more electric fields.

    DYNAMIC BACKLIGHT COLOR SHIFT COMPENSATION SYSTEMS AND METHODS
    4.
    发明公开
    DYNAMIC BACKLIGHT COLOR SHIFT COMPENSATION SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20240105132A1

    公开(公告)日：2024-03-28

    申请号：US18452802

    申请日：2023-08-21

    Applicant: Apple Inc.

    Inventor： Chengrui Le ,  Fang-Cheng Lin ,  Alexey Kornienko

    IPC: G09G3/34 ,  G09G3/36

    CPC classification number: G09G3/3413 ,  G09G3/342 ,  G09G3/36 ,  G09G2320/0646 ,  G09G2360/16

    Abstract: A device may include an electronic display having a backlight that generates light and multiple display pixels that modulate the amount of generated light emitted from the electronic display based on compensated image data. The backlight may include multiple illuminators that generate the light, and a first color component illuminator may have a slower response rate than a second color component illuminator. The device may also include image processing circuitry that generates the compensated image data by compensating input image data for a color shift associated with a change in brightness of the backlight and the slower response rate of the first color component illuminator. The input image data may be compensated by increasing first color component pixel values of the input image data relative to second color component pixel values of the input image data, and the compensated image data may be output to the electronic display.

    Dynamic backlight color shift compensation systems and methods
    5.
    发明授权
    Dynamic backlight color shift compensation systems and methods 有权

    公开(公告)号：US11776492B1

    公开(公告)日：2023-10-03

    申请号：US17934568

    申请日：2022-09-22

    Applicant: Apple Inc.

    Inventor： Chengrui Le ,  Fang-Cheng Lin ,  Alexey Kornienko

    IPC: G09G3/36 ,  G09G3/34

    CPC classification number: G09G3/3413 ,  G09G3/342 ,  G09G3/36 ,  G09G2320/0646 ,  G09G2360/16

    Abstract: A device may include an electronic display having a backlight that generates light and multiple display pixels that modulate the amount of generated light emitted from the electronic display based on compensated image data. The backlight may include multiple illuminators that generate the light, and a first color component illuminator may have a slower response rate than a second color component illuminator. The device may also include image processing circuitry that generates the compensated image data by compensating input image data for a color shift associated with a change in brightness of the backlight and the slower response rate of the first color component illuminator. The input image data may be compensated by increasing first color component pixel values of the input image data relative to second color component pixel values of the input image data, and the compensated image data may be output to the electronic display.

    Techniques to compensate for flicker at low refresh rates
    6.
    发明授权
    Techniques to compensate for flicker at low refresh rates 有权

    公开(公告)号：US11521563B2

    公开(公告)日：2022-12-06

    申请号：US17223903

    申请日：2021-04-06

    Applicant: Apple Inc.

    Inventor： Zhibing Ge ,  Chengrui Le ,  Yuechen Wu ,  Xiaokai Li ,  Lingyu Hong ,  Chaohao Wang ,  Shih-Chyuan Fan Jiang

    IPC: G09G3/34 ,  G09G3/36

    Abstract: Certain embodiments are directed to techniques (e.g., a method, an apparatus, and non-transitory computer readable medium storing code or instructions executable by one or more processors) for mitigating the flicker on the displays at low driving frequencies due to drops of the voltage holding ratio of the materials for the display. The techniques to compensate for flicker in a liquid crystal display can include generating a dynamic waveform for the backlight of the display. The dynamic waveform can be synchronized with the driving rate of the liquid crystal display such that the luminosity of the backlight increases during periods when the voltage-holding ratio drops in the materials of the display. In this way, a liquid crystal material can be utilized in a display to generate reduced power consumption with liquid crystal rate minimizing the flicker in response to the drops of the voltage-holding ratio.

    Dynamic backlight color shift compensation systems and methods
    8.
    发明授权
    Dynamic backlight color shift compensation systems and methods 有权

    公开(公告)号：US12236905B2

    公开(公告)日：2025-02-25

    申请号：US18452802

    申请日：2023-08-21

    Applicant: Apple Inc.

    Inventor： Chengrui Le ,  Fang-Cheng Lin ,  Alexey Kornienko

    IPC: G09G3/36 ,  G09G3/34

    Abstract: A device may include an electronic display having a backlight that generates light and multiple display pixels that modulate the amount of generated light emitted from the electronic display based on compensated image data. The backlight may include multiple illuminators that generate the light, and a first color component illuminator may have a slower response rate than a second color component illuminator. The device may also include image processing circuitry that generates the compensated image data by compensating input image data for a color shift associated with a change in brightness of the backlight and the slower response rate of the first color component illuminator. The input image data may be compensated by increasing first color component pixel values of the input image data relative to second color component pixel values of the input image data, and the compensated image data may be output to the electronic display.

    Step-down pixel response correction systems and methods
    10.
    发明授权
    Step-down pixel response correction systems and methods 有权

    公开(公告)号：US10535287B2

    公开(公告)日：2020-01-14

    申请号：US15275374

    申请日：2016-09-24

    Applicant: Apple Inc.

    Inventor： Chaohao Wang ,  Lu Zhang ,  Zhibing Ge ,  Shih-Chyuan Fan Jiang ,  Ilie Garbacea ,  Marc Albrecht ,  Kingsuk Brahma ,  Hopil Bae ,  Paolo Sacchetto ,  Jie Won Ryu ,  Sandro H. Pintz ,  Chengrui Le

    IPC: G09G3/34 ,  G09G3/3258 ,  G09G3/36 ,  G09G3/20

    Abstract: Systems and methods are provided for improving displayed image quality of an electronic display that includes a display pixel. The electronic display displays a first image frame directly after a second image frame by applying an analog electrical signal to the display pixel. To facilitate display of the first image frame, circuitry receives image data corresponding to the image frame, in which the image data includes a grayscale value that indicates target luminance of the display pixel; determines expected refresh rate of the first image frame based at least in part on actual refresh rate of the second image frame; determines a pixel response correction offset based at least in part on the expected refresh rate of the first image frame; and determines processed image data by applying the pixel response correction offset to the grayscale value, in which the processed image data indicates magnitude of the analog electrical signal.

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