公开(公告)号：US11881168B2

公开(公告)日：2024-01-23

申请号：US17640587

申请日：2020-09-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Wu ,  Jinsong Wen ,  Xiufeng Zhang ,  Jinqin Ai ,  Yiyang Zhang ,  Haixiao Liu

IPC: G09G3/3233 ,  G09G3/00 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/035 ,  G09G3/2007 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/048 ,  G09G2320/0673 ,  G09G2320/0686 ,  G09G2360/16

Abstract: A display screen aging compensation method, system, and device, the method including obtaining display data of each display area of a display screen having at least one display area, the display data including usage time t of the display area, a maximum gray level value Lev_max that is of each primary color and that is obtained before the display data, and an average gray level value Lev of each primary color of three primary colors within the usage time t, where the usage time is accumulated screen-on time that is of the display area and that is obtained after the display screen is powered on, obtaining a decay ratio of each primary color of the display area based on the display data, and performing aging compensation on each display area based on the decay ratio of each primary color of each display area.

公开(公告)号：US20220343845A1

公开(公告)日：2022-10-27

申请号：US17640587

申请日：2020-09-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Wu ,  Jinsong Wen ,  Xiufeng Zhang ,  Jinqin Ai ,  Yiyang Zhang ,  Haixiao Liu

IPC: G09G3/3233 ,  G09G3/00 ,  G09G3/20

Abstract: A display screen aging compensation method, system, and device, the method including obtaining display data of each display area of a display screen having at least one display area, the display data including usage time t of the display area, a maximum gray level value Lev_max that is of each primary color and that is obtained before the display data, and an average gray level value Lev of each primary color of three primary colors within the usage time t, where the usage time is accumulated screen-on time that is of the display area and that is obtained after the display screen is powered on, obtaining a decay ratio of each primary color of the display area based on the display data, and performing aging compensation on each display area based on the decay ratio of each primary color of each display area.

公开(公告)号：US11335277B2

公开(公告)日：2022-05-17

申请号：US16918988

申请日：2020-07-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinsong Wen ,  Jinqin Ai ,  Haixiao Liu

IPC: G09G3/34 ,  G09G5/10

Abstract: A method, an apparatus, and a device for adjusting screen backlight brightness. The method includes: obtaining image information and information about an environment; determining human eye characteristic information based on the image information and the information about the environment, where the human eye characteristic information is related to a minimum magnitude of a brightness change perceptible to human eyes; obtaining information about a display screen, calculating a screen backlight decreasable ratio based on the information about the display screen, the human eye characteristic information, and the image information; and determining a screen pixel brightness compensation value based on the backlight decreasable ratio, adjusting backlight brightness based on the screen backlight decreasable ratio, and adjusting the screen pixel brightness value based on the screen pixel brightness compensation value.