-
1.发明授权公开(公告)号：US11417285B2
公开(公告)日：2022-08-16
申请号：US16959201
申请日：2019-12-17
发明人： Yilang Sun , Tiankuo Shi , Zhihua Ji , Xiaomang Zhang , Yifan Hou
IPC分类号： G09G3/34
摘要： Provided are a method for controlling backlight of a display device, a backlight controller for a display device, and a display device. The method includes: identifying a light emission luminance of each backlight partition in a backlight module according to display luminances of the plurality of display partitions; when the plurality of backlight partitions include two adjacent backlight partitions and an absolute value of a difference between the light emission luminance of the two adjacent backlight partitions is greater than a target threshold, adjusting the light emission luminance of at least one of the two adjacent backlight partitions such that the absolute value of the difference between the light emission luminances of the two adjacent backlight partitions is decreased; and after the luminance is adjusted, controlling light-emitting of each backlight partition.
-
公开(公告)号：US11081081B2
公开(公告)日：2021-08-03
申请号：US16633925
申请日：2019-06-12
发明人： Yue Li , Tiankuo Shi , Zhihua Ji , Chuan Shuai , Lingyun Shi , Xiaomang Zhang , Yifang Chu , Chengqi Zhou , Chuanjun Liu , Zhou Sun , Yilang Sun
摘要： A color gamut conversion method, a color gamut converter, a display device, an image signal conversion method, a computer device and a non-transitory storage medium are disclosed. The method includes: acquiring RGB signals and a preset grayscale value of a white subpixel in each pixel of a converted image according to grayscale values of monochromatic subpixels in each pixel of an original image corresponding to the RGB signals, the converted image is obtained by converting the original image from an RGB gamut to an RGBW gamut; and acquiring a target grayscale value of the white subpixel at least according to a first maximum grayscale of the white subpixels and the preset grayscale. As for a first saturation color patch in the original image, a first maximum grayscale of a white subpixel corresponding to each pixel in the first saturation color patch is equal to a grayscale threshold.
-
公开(公告)号：US10809570B2
公开(公告)日：2020-10-20
申请号：US16244649
申请日：2019-01-10
发明人： Zhihua Ji , Tiankuo Shi , Xiaomang Zhang , Yilang Sun , Yanhui Xi , Yifang Chu , Lingyun Shi , Chuanjun Liu
IPC分类号： G09G3/36 , G02F1/13357 , G09G3/34
摘要： A method for acquiring backlight diffusion transmission parameter, a display control method and a display control device are provided. The method includes: selecting a plurality of backlight sources respectively arranged at different backlight regions of a display device and measuring a light diffusion data for each of the plurality of backlight sources, where the light diffusion data includes luminance values of a plurality of pixel points of a screen of the display device and a distance between a position of each pixel point and a position of a certain backlight source of the plurality of backlight sources in the case that only the certain backlight source is turned on; preprocessing the light diffusion data to determine effective pixel points of the plurality of pixel points; fitting the light diffusion data of the effective pixel points, to obtain a point spread function y=ƒ(x) indicating a relationship between y representing a diffusion luminance value and x representing a diffusion distance, where y representing a diffusion luminance value is a luminance value of each pixel point, and x representing a diffusion distance is a distance between a position of the each pixel point and a position of a certain backlight source of the plurality of backlight sources; and determining the point spread function y=ƒ(x) as the backlight diffusion transmission parameter.
-
4.发明授权公开(公告)号：US10923046B2
公开(公告)日：2021-02-16
申请号：US16392044
申请日：2019-04-23
发明人： Yilang Sun , Tiankuo Shi , Xiaomang Zhang , Zhihua Ji , Yifang Chu , Lingyun Shi , Yifan Hou
摘要： An image display processing method for a display device, an image display processing device, a display device, and a non-volatile storage medium are provided. The display device includes a backlight unit, and the backlight unit is divided into a plurality of display backlight blocks and driven by a local dimming mode. The image display processing method includes: determining at least one boundary backlight block corresponding to a display image in the plurality of display backlight blocks; determining at least one target pixel and at least one background pixel corresponding to each boundary backlight block, and obtaining a backlight value of each boundary backlight block based on a grayscale value of the at least one target pixel and a grayscale value of the at least one background pixel; and displaying the display image.
-
5.发明申请公开(公告)号：US20210020116A1
公开(公告)日：2021-01-21
申请号：US16635086
申请日：2019-07-25
发明人： Yilang Sun , Yifang Chu , Zhihua Ji , Tiankuo Shi , Lingyun Shi , Xiaomang Zhang
IPC分类号： G09G3/34
摘要： The present disclosure relates to a method for driving a display device, a driving apparatus, a display device and a computer-readable medium. The method includes: determining backlight signal values of backlight partitions in a backlight module according to input grayscale values of pixels; adjusting the backlight signal values of the backlight partitions by performing peak stretching processing on the backlight partitions in the condition that a total power consumption of the adjusted backlight module is less than a power threshold of the backlight module; determining backlight signal values of the pixels; determining output grayscale values of the pixels according to the backlight signal values of the pixels and the input grayscale values of the pixels; driving a display panel to display an image according to the output grayscale values of the pixels; and driving the backlight module according to the adjusted backlight signal values of the backlight partitions.
-
6.发明申请公开(公告)号：US20200225537A1
公开(公告)日：2020-07-16
申请号：US16655371
申请日：2019-10-17
发明人： Zhihua Ji , Tiankuo Shi , Xiaomang Zhang , Yifang Chu , Yilang Sun , Chuanjun Liu , Xin Duan , Lingyun Shi , Yue Li , Yifan Hou
IPC分类号： G02F1/1335 , H05B33/08
摘要： A picture compensation method and apparatus, a display device and a non-volatile computer-readable storage medium are disclosed. The method includes: partitioning light-emitting devices in a plurality of first partitions based on information of the plurality of first partitions of a backlight source to obtain a plurality of second partitions, wherein the first partition includes a plurality of synchronously controlled light-emitting devices, and the number of rows and the number of columns of light-emitting devices in each of the plurality of second partitions are equal; fitting a luminance diffusion curve of each of the plurality of second partitions based on a luminance diffusion curve of each light-emitting device in each of the plurality of second partitions; determining a backlight value of a pixel unit corresponding to each pixel on a display panel based on the luminance diffusion curve of each of the plurality of second partitions and a gray-scale value of each pixel of an input image; and compensating for a picture of the input image based on the backlight value of each pixel unit.
-
7.发明授权公开(公告)号：US11114046B2
公开(公告)日：2021-09-07
申请号：US16635086
申请日：2019-07-25
发明人： Yilang Sun , Yifang Chu , Zhihua Ji , Tiankuo Shi , Lingyun Shi , Xiaomang Zhang
IPC分类号： G09G3/34
摘要： The present disclosure relates to a method for driving a display device, a driving apparatus, a display device and a computer-readable medium. The method includes: determining backlight signal values of backlight partitions in a backlight module according to input grayscale values of pixels; adjusting the backlight signal values of the backlight partitions by performing peak stretching processing on the backlight partitions in the condition that a total power consumption of the adjusted backlight module is less than a power threshold of the backlight module; determining backlight signal values of the pixels; determining output grayscale values of the pixels according to the backlight signal values of the pixels and the input grayscale values of the pixels; driving a display panel to display an image according to the output grayscale values of the pixels; and driving the backlight module according to the adjusted backlight signal values of the backlight partitions.
-
公开(公告)号：US10976605B2
公开(公告)日：2021-04-13
申请号：US16655371
申请日：2019-10-17
发明人： Zhihua Ji , Tiankuo Shi , Xiaomang Zhang , Yifang Chu , Yilang Sun , Chuanjun Liu , Xin Duan , Lingyun Shi , Yue Li , Yifan Hou
IPC分类号： G02F1/1335 , H05B33/08 , G02F1/13357 , H05B45/10
摘要： A picture compensation method and apparatus, a display device and a non-volatile computer-readable storage medium are disclosed. The method includes: partitioning light-emitting devices in a plurality of first partitions based on information of the plurality of first partitions of a backlight source to obtain a plurality of second partitions, wherein the first partition includes a plurality of synchronously controlled light-emitting devices, and the number of rows and the number of columns of light-emitting devices in each of the plurality of second partitions are equal; fitting a luminance diffusion curve of each of the plurality of second partitions based on a luminance diffusion curve of each light-emitting device in each of the plurality of second partitions; determining a backlight value of a pixel unit corresponding to each pixel on a display panel based on the luminance diffusion curve of each of the plurality of second partitions and a gray-scale value of each pixel of an input image; and compensating for a picture of the input image based on the backlight value of each pixel unit.
-
公开(公告)号：US10783837B2
公开(公告)日：2020-09-22
申请号：US16235201
申请日：2018-12-28
发明人： Yilang Sun , Yifang Chu , Tiankuo Shi , Zhihua Ji , Lingyun Shi
摘要： Disclosed are a driving method and driving device of a display device, and a related device. After the backlight signal value of the backlight area is subjected to peak driving, the backlight signal value of each backlight area subjected to peak driving is subjected to backlight diffusion to obtain the backlight signal value of each pixel, and then the output luminance value of each pixel is determined according to the backlight signal value of each pixel and the relationship between the corresponding grayscale value when the backlight module is always on and the peak driving threshold, so as to perform display control.
-
公开(公告)号：US20210390916A1
公开(公告)日：2021-12-16
申请号：US17255989
申请日：2020-05-22
发明人： Tiankuo Shi , Lingyun Shi , Xiaomang Zhang , Xin Duan , Wei Sun , Guofeng Hu , Zhihua Ji , Yanhui Xi , Yan Sun , Bin Dai , Yue Li , Yifan Hou , Yilang Sun , Chuanjun Liu , Xue Dong
IPC分类号： G09G3/34
摘要： A display device and a display control method, and the display device includes: a backlight module, a first display panel, and a second display panel, and a processor. The processor is configured to: acquire a pixel grayscale matrix of an image to be displayed; determine desired brightness of each pixel by using a grayscale-brightness curve of the second display panel based on the pixel grayscale matrix; determine set light-emitting brightness of backlight partition according to grayscale information in the pixel grayscale matrix corresponding to the backlight partition; obtain a first corrected brightness of each backlight partition based on light diffusion coefficients of the plurality of backlight partitions; determine a grayscale of pixel unit according to a brightness difference between the first corrected brightness and the desired brightness; obtain a second corrected brightness of the backlight partition.
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.103 秒)
