Patent ID: 11862077
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A method for improving image display quality, comprising:
dividing a total gray scale range of a gamma voltage curve of a display apparatus to obtain a plurality of gray scale ranges;
obtaining data of gray scales of at least one frame of image to be displayed by the display apparatus, and calculating a ratio of data of gray scales in each gray scale range to the data of gray scales of the at least one frame of image to be displayed;
adjusting a division value of a gamma voltage range corresponding to each gray scale range of the gamma voltage curve according to the calculated ratio, so that a division value of a gamma voltage range corresponding to a gray scale range with a maximum ratio is less than a division value of a gamma voltage range corresponding to any remaining gray scale range; and
outputting gamma voltages corresponding to the data of gray scales of the at least one frame of image to be displayed according to the adjusted gamma voltage curve;
wherein calculating the ratio of the data of gray scales in each gray scale range to the data of gray scales of the at least one frame of image to be displayed includes:
setting a weight value corresponding to each gray scale range;
counting a reference quantity of the data of gray scales in each gray scale range;
calculating a weighted value of the data of gray scales in each gray scale range and a sum of weighted values corresponding to the gray scale ranges, according to the reference quantity of the data of gray scales in each gray scale range and the weight value corresponding to the gray scale range; and
calculating the ratio of the data of gray scales in each gray scale range according to the weighted value of the data of gray scales in each gray scale range and the sum of the weighted values.