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1. CN109300444 - Compression method for compensation table

Office China
Application Number 201811468709.9
Application Date 03.12.2018
Publication Number 109300444
Publication Date 01.02.2019
Grant Number 109300444
Grant Date 21.01.2020
Publication Kind B
IPC
G09G 3/36
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34by control of light from an independent source
36using liquid crystals
CPC
G09G 3/3607
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
36using liquid crystals
3607for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
G09G 2320/0271
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
02Improving the quality of display appearance
0271Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
Applicants SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
深圳市华星光电半导体显示技术有限公司
Inventors DENG YUFAN
邓宇帆
CHENG LIN
程琳
Agents 深圳市德力知识产权代理事务所 44265
深圳市德力知识产权代理事务所 44265
Title
(EN) Compression method for compensation table
(ZH) 补偿表的压缩方法
Abstract
(EN)
The invention provides a processing method for a compensation table. According to the method, a compression quantization coefficient is used to compress the original compensation table to a first compression file, the first compression file is decompressed to obtain multiple compression grey-scale values, multiple compensation grey-scale values and the corresponding compression grey-scale values are subtracted to obtain multiple original residuals, a deviation coefficient is used to carry out quantization processing on the multiple original residuals to obtain multiple quantization residuals,and a sparse matrix is used to store the multiple quantization residuals to obtain a second compression file. While the compensation table is compressed, the deviation in the case of compensation table compression can be effectively reduced, the compression quality is enhanced, influences generated on Demura effects by distortion brought by compression deviation are eliminated, and the display quality of the display device is enhanced.

(ZH)
本发明提供一种补偿表的处理方法。本发明的补偿表的处理方法中利用压缩量化系数将原始补偿表压缩为第一压缩文件,对第一压缩文件进行解压得到多个压缩灰阶值,将多个补偿灰阶值与对应的压缩灰阶值相减得到多个原始残差,利用偏差系数对多个原始残差进行量化处理得到多个量化残差,利用稀疏矩阵存储多个量化残差,得到第二压缩文件,能够在完成对补偿表进行压缩的同时,有效地降低补偿表压缩的偏差,提升压缩的质量,消除压缩偏差带来的失真对Demura的效果产生影响,提升显示装置的显示品质。

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