BACKLIGHT CONTROL METHOD, BACKLIGHT MODULE AND DISPLAY APPARATUS

    公开(公告)号:US20180061333A1

    公开(公告)日:2018-03-01

    申请号:US15528744

    申请日:2016-08-05

    Abstract: A backlight control method, a backlight module and a display apparatus are disclosed. The backlight control method comprises: dividing a backlight into N blocks; determining whether each of the N blocks satisfies a high current driving start-up condition or not according to a pixel signal in each input frame of image signal and determining blocks which satisfy the high current driving start-up condition as candidate blocks; setting blocks among the candidate blocks which are determined to be driven by high current as selected blocks in a case that power consumption of each frame of picture does not exceed total backlight power consumption without dynamic backlight control; and calculating backlight driving pulse width modulation duty ratios of the selected blocks according to a correspondence between brightness and pulse width modulation duty ratios, and transmitting the calculated backlight driving pulse width modulation duty ratios to a backlight driving circuit.

    IMAGE COMPENSATION METHOD AND APPARATUS
    13.
    发明申请
    IMAGE COMPENSATION METHOD AND APPARATUS 有权
    图像补偿方法和装置

    公开(公告)号:US20170032498A1

    公开(公告)日:2017-02-02

    申请号:US15135859

    申请日:2016-04-22

    CPC classification number: G06T5/001 G06T5/008 G06T5/50 G06T7/20 G06T2207/10016

    Abstract: An image compensation method and apparatus is provided. The method may include: determining, as the second brightness value, a brightness value for which a SAD corresponding to the brightness value and the first brightness value is the minimum, in brightness parameters of a second image displayed at a second time; determining a membership degree corresponding to a target SAD; determining a motion compensation parameter corresponding to a first coordinate and a median frame interpolation parameter corresponding to the first coordinate; determining a brightness compensation parameter corresponding to the first coordinate based on the membership degree corresponding to the target SAD, the motion compensation parameter corresponding to the first coordinate and the median frame interpolation parameter corresponding to the first coordinate; performing an image compensation so as to display a compensated image at a time between the second time and the first time based on the brightness compensation parameter corresponding to the first coordinate.

    Abstract translation: 提供了一种图像补偿方法和装置。 该方法可以包括:在第二次显示的第二图像的亮度参数中,确定与亮度值和第一亮度值对应的SAD为最小的亮度值作为第二亮度值; 确定与目标SAD对应的隶属度; 确定对应于第一坐标的运动补偿参数和对应于第一坐标的中间帧插值参数; 基于与目标SAD对应的隶属度,确定与第一坐标对应的亮度补偿参数,对应于第一坐标的运动补偿参数和与第一坐标对应的中间帧插值参数; 执行图像补偿,以便基于与第一坐标对应的亮度补偿参数在第二时间和第一时间之间的时间显示补偿图像。

    Backlight data transmission method, micro control unit and local dimming backlight system

    公开(公告)号:US12039944B2

    公开(公告)日:2024-07-16

    申请号:US17639166

    申请日:2021-04-26

    CPC classification number: G09G3/342 G09G2370/00

    Abstract: The present disclosure provides a backlight data transmission method including: receiving, in response to a first vertical synchronization signal of a current image frame sent from a logic circuit board, an entire of backlight data sent from the logic circuit board during a first preset time period, where the entire backlight data includes backlight data corresponding to backlight regions, and duration of the first preset time period is longer than duration of the first vertical synchronization signal in an active level state during one period; and sending the entire backlight data to a backlight driving module during a second preset time period after the first preset time period, where a sum of the duration of the first preset time period and duration of the second preset time period is less than a period of the first vertical synchronization signal.

    Image processing method and device, storage medium and computer device

    公开(公告)号:US11210765B2

    公开(公告)日:2021-12-28

    申请号:US16300971

    申请日:2018-04-24

    Abstract: An image processing method and device, storage medium and computer device are provided. The method includes: generating an original gray scale image of an original image; performing a histogram equalization process on the original gray scale image to obtain an equalized gray scale image; generating decision factor distribution image, wherein the decision factor distribution image includes a first marked region including a region where pixels that are adjacent in position and have standard deviations smaller than set value in the original image are located, and second marked region; obtaining final gray scale image according to original gray scale image, equalized gray scale image and decision factor distribution image. Gray scale values of pixel corresponding to second marked region and first marked region in final gray scale image are respectively gray scale values of corresponding pixel in equalized gray scale image and original gray scale image; and restoring a processed image.

    Display substrate, display apparatus, method of controlling display substrate, and method of fabricating display substrate

    公开(公告)号:US11088213B1

    公开(公告)日:2021-08-10

    申请号:US16632221

    申请日:2019-07-26

    Abstract: A display substrate is provided. The display substrate includes a first chromogenic layer; a plurality of first columns of light emitting elements on the first chromogenic layer; a second chromogenic layer on a side of the plurality of first columns of light emitting elements away from the first chromogenic layer; and a plurality of second columns of light emitting elements on a side of the second chromogenic layer away from the first chromogenic layer. The plurality of first columns of light emitting elements are arranged along substantially a same direction as the plurality of second columns of light emitting elements. The plurality of second columns of light emitting elements are spaced apart by a plurality of inter-column gap regions respectively. A respective one of the plurality of first columns of light emitting elements is at least partially in a respective one of the plurality of inter-column gap regions.

    Encoding method and device, decoding method and device, and display device

    公开(公告)号:US11056070B2

    公开(公告)日:2021-07-06

    申请号:US16620168

    申请日:2018-06-01

    Abstract: This application relates to an encoding method and device, a decoding method and device, and a signal transmission system. The encoding method includes: encoding 8-bit data corresponding to a to-be-encoded byte of to-be-transmitted data into 9-bit data, the to-be-transmitted data comprising at least one to-be-encoded byte; detecting the first digit of data of the 9-bit data and a previous digit of data adjacent to the first digit of data, when the to-be-encoded byte is not the first byte of the to-be-transmitted data; inverting the 9-bit data and then adding a tenth digit of data for indicating that the inverted 9-bit data has undergone an inversion operation behind the inverted 9-bit data to obtain 10-bit data, when the numerical value of the first digit of data is the same as that of the previous digit of data; and adding a tenth digit of data for indicating that the 9-bit data has not undergone an inversion operation behind the 9-bit data to obtain 10-bit data, when the numerical value of the first digit of data is different from that of the previous digit of data.

    Method for controlling display device, control apparatus for display device and display device

    公开(公告)号:US10388231B2

    公开(公告)日:2019-08-20

    申请号:US15547042

    申请日:2017-01-05

    Abstract: The present disclosure provides a method for controlling a display device, a control apparatus for a display device, and a display device comprising the control apparatus. The method for controlling a display device may comprise the steps of: determining whether or not to perform peak driving for respective backlight sub-regions of the display device, the backlight sub-regions corresponding to sub-display areas of the display device; and performing, in response to a result of the above determining step, data signal compensation at least for sub-display areas whose average luminance values are lower than a preset first luminance threshold among the sub-display areas to which the backlight sub-regions that are determined to be subjected to peak driving correspond.

    Backlight control method, backlight module and display apparatus

    公开(公告)号:US10249250B2

    公开(公告)日:2019-04-02

    申请号:US15528744

    申请日:2016-08-05

    Abstract: A backlight control method, a backlight module and a display apparatus are disclosed. The backlight control method comprises: dividing a backlight into N blocks; determining whether each of the N blocks satisfies a high current driving start-up condition or not according to a pixel signal in each input frame of image signal and determining blocks which satisfy the high current driving start-up condition as candidate blocks; setting blocks among the candidate blocks which are determined to be driven by high current as selected blocks in a case that power consumption of each frame of picture does not exceed total backlight power consumption without dynamic backlight control; and calculating backlight driving pulse width modulation duty ratios of the selected blocks according to a correspondence between brightness and pulse width modulation duty ratios, and transmitting the calculated backlight driving pulse width modulation duty ratios to a backlight driving circuit.

    GRAYSCALE SIGNAL COMPENSATION UNITS, GRAYSCALE SIGNAL COMPENSATION METHODS, SOURCE DRIVERS, AND DISPLAY APPARATUSES

    公开(公告)号:US20180268753A1

    公开(公告)日:2018-09-20

    申请号:US15795867

    申请日:2017-10-27

    Abstract: The present disclosure discloses a grayscale signal compensation unit, a grayscale signal compensation method, a source driver, and a display apparatus. The grayscale signal compensation unit comprises: a compensation coefficient determination sub-unit configured to determine a compensation coefficient according to a position of a pixel to be driven; an inquiry sub-unit configured to inquire a reference compensation value corresponding to the initial grayscale signal according to a pre-stored grayscale compensation correspondence table for a row of pixels farthest from the source driving circuit, wherein the grayscale compensation correspondence table contains different grayscale signals and corresponding reference compensation values thereof; a calculation sub-unit configured to calculate an actual compensation value corresponding to the pixel to be driven according to the compensation coefficient and the inquired reference compensation value; and a compensation sub-unit configured to compensate for the initial grayscale signal according to the actual compensation value.

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