公开(公告)号：US20180308415A1

公开(公告)日：2018-10-25

申请号：US16024758

申请日：2018-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ching Hsiang HSU ,  Tianyi LO ,  Jun LIU ,  Hengshun KUAN ,  Bin CAO ,  Xialin GAN

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/2014 ,  G02F1/13 ,  G09G3/36 ,  G09G3/3648 ,  G09G2310/08 ,  G09G2320/0252 ,  G09G2320/0285 ,  G09G2320/103 ,  G09G2340/02 ,  G09G2340/16

Abstract: A display driving apparatus and a display driving method are provided. The display driving apparatus includes a compression and decompression unit, a storage unit, a data selection unit, and a display acceleration unit. When a current frame correlates with a preceding frame, and the current frame is dynamic relative to the preceding frame, the data selection unit obtains a compensated preceding frame by means of calculation according to the current frame, a decompressed current frame, and a decompressed preceding frame, and the display acceleration unit determines an overdrive value according to the compensated preceding frame and the current frame. It may be learned from the foregoing description that no compression error is involved in an overdrive value determining process, an overdrive mechanism may be still used to determine a grayscale value of a displayed pixel. Therefore, display quality of a dynamic image is improved.

公开(公告)号：US20210049966A1

公开(公告)日：2021-02-18

申请号：US17089680

申请日：2020-11-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ching Hsiang HSU ,  Dustin Yuk Lun WAI ,  Zeyu NIU

IPC: G09G3/3258

Abstract: Methods and apparatuses for controlling brightness of a display are disclosed in the present disclosure. One method includes: determining a first brightness value of a display at a current brightness adjustment level; determining, based on a gamma correction lookup table, a first input grayscale value corresponding to the first brightness value, wherein the gamma correction lookup table comprises a gamma correction relationship between a brightness value of the display and an initial input grayscale value of the display at a predetermined brightness adjustment levels; and controlling an output brightness value of the display based on the first input grayscale value.