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    SELECTIVE BLACK LEVEL CONTROL IN ACTIVE MATRIX DISPLAYS
    3.
    发明申请
    SELECTIVE BLACK LEVEL CONTROL IN ACTIVE MATRIX DISPLAYS 审中-公开

    公开(公告)号：WO2023009141A1

    公开(公告)日：2023-02-02

    申请号：PCT/US2021/043960

    申请日：2021-07-30

    Applicant: GOOGLE LLC

    Inventor： CHOI, Sangmoo ,  SOLOMON, Daniel

    IPC: G09G3/3225

    Abstract: A method includes: (a) receiving initial image frame data to display an image frame on a display panel, a luminance of each pixel of the display corresponding to a gray level; (b) identifying dark pixels at or below a first threshold gray level; (c) identifying pixels to be modified as a subset of the dark pixels neighbored by at least one bright pixel exceeding a second threshold gray level; (d) increasing by an incremental amount the gray level of the pixels to be modified, providing modified image frame data composed of: (i) the dark pixels that are neighbored by at least one bright pixel having gray levels that have been increased by the incremental gray level amount, and (ii) other pixels that have gray levels from the initial image frame data; and (e) displaying the image frame using the modified image frame data.

    DISABLING TRANSITIONS WHEN ENCODED INTENSITY IS LOW
    6.
    发明申请
    DISABLING TRANSITIONS WHEN ENCODED INTENSITY IS LOW 审中-公开

    公开(公告)号：WO2022240447A1

    公开(公告)日：2022-11-17

    申请号：PCT/US2021/070522

    申请日：2021-05-10

    Applicant: GOOGLE LLC

    Inventor： CHOI, Sangmoo ,  SOLOMON, Daniel

    IPC: G09G3/20 ,  G09G2320/0247 ,  G09G2320/103 ,  G09G2340/0435 ,  G09G2360/16

    Abstract: A method can include determining that a first frame for display on an emissive display meets a low encoded intensity condition; based on the determination that the first frame meets the low encoded intensity condition, disabling refresh rate transitions when displaying multiple frames on the emissive display; while the refresh rate transitions are disabled, maintaining a refresh rate while changing a graphic intensity; determining that a second frame does not meet the low encoded intensity condition; based on the determination that the second frame does not meet the low encoded intensity condition, enabling refresh rate transitions when displaying multiple frames on the emissive display; and while the refresh rate transitions are enabled, changing the refresh rate for the emissive display based on the graphic intensity changing.

    COLOR CALIBRATION OF DISPLAY MODULES USING A REDUCED NUMBER OF DISPLAY CHARACTERISTIC MEASUREMENTS
    7.
    发明申请
    COLOR CALIBRATION OF DISPLAY MODULES USING A REDUCED NUMBER OF DISPLAY CHARACTERISTIC MEASUREMENTS 审中-公开

    公开(公告)号：WO2021118556A1

    公开(公告)日：2021-06-17

    申请号：PCT/US2019/065677

    申请日：2019-12-11

    Applicant: GOOGLE LLC

    Inventor： AGAHIAN, Farnaz ,  SOLOMON, Daniel

    IPC: G09G3/00 ,  G09G5/06 ,  G09G3/3208

    Abstract: This document describes techniques and apparatuses for performing color calibration of display modules using a reduced number of display characteristic measurements. In aspects, methods include generating a measured lookup table (50) for a source display module (32), using dynamic optimization to down-sample the measured lookup table and select a set of color patches, sending the color patches to a testing display module; measuring output values for the testing display module; generating a sparse lookup table (52) relating the color patches and the measured output values, up-sampling the sparse lookup table to a forward lookup table (54), and inverting the forward lookup table to generate a reverse lookup table (56). The reverse lookup table (56) can be utilized to determine correct output values (29) for driving a target display module to generate color lights within a display module color gamut.

    VARYING DISPLAY REFRESH RATE
    8.
    发明申请
    VARYING DISPLAY REFRESH RATE 审中-公开

    公开(公告)号：WO2020117347A1

    公开(公告)日：2020-06-11

    申请号：PCT/US2019/049895

    申请日：2019-09-06

    Applicant: GOOGLE LLC

    Inventor： CHOI, Wonjae ,  SOLOMON, Daniel ,  KAEHLER, John

    IPC: G09G5/00 ,  G09G5/12

    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for enabling a variable refresh rate on a display. One of the methods includes receiving, from a content presentation device, a first signal set to a first value; completing generation of first visual content; and after completing the generation of the first visual content, determining that the first signal is set to the first value and a second threshold duration of time has not expired; sending, to the content presentation device, the first visual content, wherein sending the first visual content causes the content presentation device to change the first signal from the first value to the second value; and after sending the first visual content, receiving, from the content presentation device, the first signal set to the second value.

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