Patents by Inventor Xiaomang Zhang

Xiaomang Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210217370
    Abstract: 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.
    Type: Application
    Filed: December 17, 2019
    Publication date: July 15, 2021
    Inventors: Yilang Sun, Tiankuo Shi, Zhihua Ji, Xiaomang Zhang, Yifan Hou
  • Publication number: 20210193018
    Abstract: The present disclosure provides an image processing method and a display device including rows of actual pixels each including actual sub-pixels, and starting positions of actual sub-pixels in odd-numbered and even-numbered rows are staggered by a distance of half of an actual sub-pixel. The method includes: determining rows of theoretical pixels corresponding to a to-be-displayed image, each theoretical pixel including theoretical sub-pixels, each actual pixel corresponding to at least two theoretical pixels; calculating grayscale data of each actual sub-pixel in a manner of: for a target actual pixel, determining a rendering mode for calculating grayscale data of each actual sub-pixel of the target actual pixel according to whether there is a specified detail feature in a pixel area where target theoretical pixels corresponding to the target actual pixel are located, different rendering modes are employed when there is or there is not a specified detail feature in the pixel area.
    Type: Application
    Filed: June 30, 2020
    Publication date: June 24, 2021
    Applicants: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhiheng ZHOU, Tiankuo SHI, Yue LI, Xiaomang ZHANG, Jingpeng ZHAO, Yifan HOU, Zhihua JI, Yilang SUN, Yifang CHU, Chuanjun LIU, Xin DUAN, Lingyun SHI
  • Patent number: 11043152
    Abstract: A method for filling holes in a naked-eye 3D multi-viewpoint image is provided, comprising: sequentially performing a step of mapping, determining and marking row by row, comprising mapping two first pixels adjacent to each other in a row direction among a plurality of first pixels in a reference camera image to two second pixels in a virtual camera image, determining whether there is a hole between the two second pixels, and if so, marking the hole; and sequentially performing a step of scanning, assessing and filling row by row, comprising scanning two second pixels adjacent to each other in a row direction, assessing whether there is a marked hole between the two adjacent second pixels, and filling the marked hole according to at least one non-zero second pixel which is adjacent to the marked hole.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: June 22, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Bin Dai, Xiaomang Zhang, Yanhui Xi, Yan Sun, Yankai Gao, Yuxin Bi, Lingyun Shi
  • Publication number: 20210183295
    Abstract: A driving method for a pixel array is provided. The driving method includes: amplifying an input image to obtain an intermediate image; calculating display parameters of each actual pixel unit based on display parameters of the intermediate theoretical pixel units of the intermediate image; and generating actual image signals based on the calculated display parameters of each actual pixel unit and inputting the actual image signals to the actual pixel units of the pixel array, respectively.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 17, 2021
    Inventors: Tiankuo SHI, Xiaomang ZHANG, Bin DAI, Lingyun SHI, Wei SUN, Bo GAO, Yue LI
  • Patent number: 10984736
    Abstract: An image display processing method for a display device, an image display processing device, a display device and a storage medium are provided. The display device includes a backlight unit, the backlight unit includes a plurality of backlight blocks and is driven by a local dimming mode, and the image display processing method includes: acquiring a regional eigenvalue of each backlight block of an (n)th frame image and a regional eigenvalue of each backlight block of an (n?1)th frame image; and performing a peak driving processing on a backlight luminance of each backlight block of the (n)th frame image, based on a preset threshold, the regional eigenvalue of each backlight block of the (n)th frame image and the regional eigenvalue of each backlight block of the (n?1)th frame image, so as to acquire an adjusted backlight luminance of each backlight block of the (n)th frame image.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: April 20, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanhui Xi, Ming Chen, Xiaomang Zhang, Yan Sun, Bin Dai, Zhihua Ji, Tiankuo Shi, Yuxin Bi, Lingyun Shi
  • Patent number: 10976605
    Abstract: A picture compensation method and apparatus, a display device and a non-volatile computer-readable storage medium are disclosed.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: April 13, 2021
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zhihua Ji, Tiankuo Shi, Xiaomang Zhang, Yifang Chu, Yilang Sun, Chuanjun Liu, Xin Duan, Lingyun Shi, Yue Li, Yifan Hou
  • Publication number: 20210097926
    Abstract: The present disclosure provides a method and apparatus for driving a display panel, and a display device. The method includes: upon driving an ith row of sub-pixels, scanning a gate line connected to a jth row of sub-pixels, and determining a reference grayscale of each of the jth row of sub-pixels in each candidate connection mode, wherein a plurality of data lines have a plurality of candidate connection modes; determining a target connection mode that minimizes a grayscale variation degree of the jth row of sub-pixels from the plurality of candidate connection modes; connecting the plurality of data lines according to the target connection mode; and disconnecting the plurality of data lines before driving the jth row of sub-pixels through the plurality of data lines.
    Type: Application
    Filed: April 2, 2020
    Publication date: April 1, 2021
    Inventors: Gaoming Sun, Hsinchung Lo, Xiaomang Zhang, Ching wen Kong, Yuxin Bi, Yang Gao, Zhenkun Song, Fuyin Wang
  • Patent number: 10930225
    Abstract: A display control method and apparatus of backlight sources, and a display device are provided. The method includes: determining a set backlight value of each backlight area according to a grayscale of an image to be displayed; determining an equivalent backlight luminance of each pixel point according to backlight source diffusion transmission parameter of the backlight module of the display device and the set backlight value of each backlight area; determining a compensation image according to the equivalent backlight luminance of each pixel point; and controlling the backlight module to turn on the backlight sources according to the set backlight value of each backlight area, and controlling the display panel to display the image according to the compensation image.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: February 23, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhihua Ji, Tiankuo Shi, Xiaomang Zhang, Yilang Sun, Lingyun Shi, Wenyu Li, Yanhui Xi, Chuanjun Liu
  • Patent number: 10923046
    Abstract: 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.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: February 16, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yilang Sun, Tiankuo Shi, Xiaomang Zhang, Zhihua Ji, Yifang Chu, Lingyun Shi, Yifan Hou
  • Patent number: 10916173
    Abstract: The disclosure relates to a method and apparatus for converting a grayscale, and a display device, where color coordinates of respective pixel elements are determined according to grayscales corresponding to red sub-pixels, green sub-pixels, and blue sub-pixels in the respective pixel elements in image data of a frame to be displayed, and then the distances between the color coordinates of the respective pixel elements, and color coordinates of a preset white pixel on the panel, in a CIE chroma graph are determined; and the maximum grayscales of white sub-pixels in the respective pixel elements are further determined according to the respective determined distances and a preset segmentation function.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: February 9, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Bin Dai, Yanhui Xi, Xiaomang Zhang, Yan Sun, Yue Li, Yuxin Bi, Yankai Gao
  • Publication number: 20210020116
    Abstract: 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.
    Type: Application
    Filed: July 25, 2019
    Publication date: January 21, 2021
    Inventors: Yilang Sun, Yifang Chu, Zhihua Ji, Tiankuo Shi, Lingyun Shi, Xiaomang Zhang
  • Patent number: 10896635
    Abstract: Disclosed is a primary color conversion method, which may expand primary color signals that are applicable to a display device. The primary color conversion method includes: acquiring color coordinates and a brightness value of a first color in a first color gamut having M primary colors according to gray-scale values of the M primary colors corresponding to the first color; and mapping the color coordinates and the luminance value of the first color in the first color gamut to color coordinates and a brightness value of a second color corresponding to the first color in a second color gamut having N primary colors. 3?M, 3?N, M is different from N, and M and N are positive integers.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: January 19, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanhui Xi, Bin Dai, Xiaomang Zhang, Yan Sun, Kuanjun Peng, Haijun Niu, Xiaolong Li, Donghui Wang
  • Patent number: 10884489
    Abstract: The present disclosure provides a processing circuit of a display panel, a display method and a display device. The processing circuit includes: a line-of-sight acquisition module configured to track an eyeball of each eye, to determine a concern region of line of sight on the display panel and a region other than the concern region; a control module configured to acquire original image data of an image to be displayed on the display panel, subject first original image data corresponding to the concern region and/or second original image data corresponding to the other region to treatment, and output first image generation data corresponding to the concern region and second image generation data corresponding to the other region and having a resolution smaller than the first image generation data; and a display signal output module configured to output a display signal to the display panel in accordance with the first image generation data and the second image generation data.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: January 5, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Tiankuo Shi, Xue Dong, Dong Chen, Xiaomang Zhang, Wei Sun, Hao Zhang, Lingyun Shi, Xiaobo Xie, Zijiao Xue, Bo Gao, Yafei Li, Jinxing Liu, Yan Li, Yue Li, Xiangyi Chen, Shuaishuai Xu, Xiaochuan Chen, Shengji Yang
  • Publication number: 20200410945
    Abstract: A method for obtaining a backlight intensity may improving data processing speed of a display device. The method includes: dividing image data into N sets of data; calculating a backlight intensity of each backlight block according to a corresponding set of data; for each group of pixels, calculating a backlight intensity corresponding to a first pixel according to a backlight intensity of each effective backlight block corresponding to the first pixel and a backlight diffusion weight of the effective backlight block corresponding to the first pixel; calculating backlight intensities corresponding to second to Mth pixels in the Tth group of pixels according to the backlight intensities corresponding to first pixels in the Tth group of pixels and a (T+1)th group of pixels; and for a Nth group of pixels, setting the backlight intensity corresponding to the first pixel as backlight intensities corresponding to second to Mth pixels.
    Type: Application
    Filed: June 29, 2020
    Publication date: December 31, 2020
    Inventors: Zhihua JI, Tiankuo SHI, Zhenkun SONG, Xiaomang ZHANG, Hsinchung LO, Chingwen KUNG, Lingyun SHI, Xin DUAN, Yue LI, Yifan HOU
  • Patent number: 10872558
    Abstract: 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 includes a plurality of display backlight blocks and is configured to be driven by a local dimming mode. The image display processing method includes: obtaining a peak driving threshold of an (s?1)-th frame of image based on respective backlight values of the plurality of backlight blocks of the (s?1)-th frame of image after a first local dimming process is performed on the (s?1)-th frame of image; obtaining respective adjusted backlight values of the plurality of backlight blocks of the s-th frame of image; and displaying the s-th frame of image by using the respective adjusted backlight values of the plurality of backlight blocks of the s-th frame of image.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: December 22, 2020
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhihua Ji, Tiankuo Shi, Yilang Sun, Xiaomang Zhang, Yanhui Xi, Lingyun Shi, Wenyu Li
  • Patent number: 10867579
    Abstract: A data processing method, an image display driving method, a data processing device, a display panel and a computer-readable storage medium are provided. The data processing method includes: based on input RGB grayscale values, calculating a chromaticity coordinate of the input RGB grayscale values on a chromaticity diagram, in which the chromaticity diagram includes a white basic point; calculating to obtain intermediate grayscale values containing a white component, based on the input RGB grayscale values and according to a position relationship between the chromaticity coordinate and the white basic point; and adjusting the intermediate grayscale values to obtain output RGBW grayscale values.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: December 15, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yan Sun, Xiaomang Zhang, Yanhui Xi, Chuan Shuai, Bin Dai
  • Patent number: 10832611
    Abstract: The present application provides a multiple primary color conversion method, including: determining color triangles according to color coordinates of a target color; computing grayscale components of l primary colors corresponding to the target color in the color triangles; in step S130, obtaining initial grayscales of l primary colors; in step S140, judging whether there is an overflow grayscale; if yes, then performing step S160, if no, then performing step S150; in step S150, adjusting initial brightness components corresponding to grayscale components of the same primary color as the overflow grayscale, computing grayscale components of l primary colors in color triangles including the primary color of the overflow grayscale, and performing steps S130 and S140; in step S160, determining the initial grayscales of l primary colors as grayscales of l primary colors of the target color.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: November 10, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanhui Xi, Bin Dai, Xiaomang Zhang, Yan Sun, Haijun Niu, Kuanjun Peng, Yuxin Bi, Donghui Wang
  • Patent number: 10809570
    Abstract: A method for acquiring backlight diffusion transmission parameter, a display control method and a display control device are provided.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: October 20, 2020
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhihua Ji, Tiankuo Shi, Xiaomang Zhang, Yilang Sun, Yanhui Xi, Yifang Chu, Lingyun Shi, Chuanjun Liu
  • Publication number: 20200243025
    Abstract: The present disclosure provides a dimming method for an LCD device. The LCD device includes a dimming screen and a display screen. The dimming screen is divided into N×M dimming areas, and the display screen is also divided into N×M display areas. N and M are respectively positive integers greater than or equal to 1. The dimming areas correspond to the display areas in a one-to-one relationship. The dimming method includes determining a regional eigenvalue of each of the dimming areas according to image data, determining a dimming brightness of each of the dimming areas according to each regional eigenvalue, and dimming each of the dimming areas according to each dimming brightness. The present disclosure also provides a dimming screen for use in the dimming method and an LCD device using the dimming method.
    Type: Application
    Filed: April 4, 2019
    Publication date: July 30, 2020
    Inventors: Yanhui XI, Yuxin BI, Bin DAI, Xiaomang ZHANG, Lingyun SHI
  • Publication number: 20200226965
    Abstract: Disclosed is a primary color conversion method, which may expand primary color signals that are applicable to a display device. The primary color conversion method includes: acquiring color coordinates and a brightness value of a first color in a first color gamut having M primary colors according to gray-scale values of the M primary colors corresponding to the first color; and mapping the color coordinates and the luminance value of the first color in the first color gamut to color coordinates and a brightness value of a second color corresponding to the first color in a second color gamut having N primary colors. 3?M, 3?N, M is different from N, and M and N are positive integers.
    Type: Application
    Filed: September 27, 2018
    Publication date: July 16, 2020
    Inventors: Yanhui XI, Bin DAI, Xiaomang ZHANG, Yan SUN, Kuanjun PENG, Haijun NIU, Xiaolong LI, Donghui WANG