Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020093495 - METHOD AND DEVICE FOR ADJUSTING GAMMA VALUE OF DISPLAY PANEL

Publication Number WO/2020/093495
Publication Date 14.05.2020
International Application No. PCT/CN2018/118902
International Filing Date 03.12.2018
IPC
G09G 3/36 2006.01
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 2320/0242
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
0242Compensation of deficiencies in the appearance of colours
G09G 2320/0276
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
0276for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
G09G 2320/0285
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
0285using tables for spatial correction of display data
G09G 2320/0673
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
06Adjustment of display parameters
0673for control of gamma adjustment, e.g. selecting another gamma curve
G09G 2320/0693
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
06Adjustment of display parameters
0693Calibration of display systems
G09G 3/3648
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
3611Control of matrices with row and column drivers
3648using an active matrix
Applicants
  • 重庆先进光电显示技术研究院 CHONGQING ADVANCE DISPLAY TECHNOLOGY RESEARCH [CN]/[CN]
  • 重庆惠科金渝光电科技有限公司 CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 陈伟 CHEN, Wei
Agents
  • 深圳市世纪恒程知识产权代理事务所 CENFO INTELLECTUAL PROPERTY AGENCY
Priority Data
201811336116.709.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD AND DEVICE FOR ADJUSTING GAMMA VALUE OF DISPLAY PANEL
(FR) PROCÉDÉ ET DISPOSITIF D'AJUSTEMENT DE VALEUR GAMMA DE PANNEAU D'AFFICHAGE
(ZH) 显示面板的伽马值调试方法及装置
Abstract
(EN)
A method for adjusting a gamma value of a display panel comprises: setting a preset range of gamma values according to parameters of a display panel (1007) under test; acquiring a luminance value associated with a greyscale of the display panel (1007); calculating to obtain a gamma value corresponding to the luminance value associated with the greyscale; if the gamma value is less than a first gamma value in a preset range of gamma values, adjusting the gamma value to the first gamma value; and if the gamma value is greater than a second gamma value in the preset range of gamma values, adjusting the gamma value to the second gamma value.
(FR)
L'invention concerne un procédé d'ajustement d'une valeur gamma d'un panneau d'affichage qui consiste à : définir une plage prédéfinie de valeurs gamma selon des paramètres d'un panneau d'affichage (1007) à tester ; acquérir une valeur de luminance associée à une échelle de gris du panneau d'affichage (1007) ; calculer pour obtenir une valeur gamma correspondant à la valeur de luminance associée à l'échelle de gris ; si la valeur gamma est inférieure à une première valeur gamma dans une plage prédéfinie de valeurs gamma, ajuster la valeur gamma à la première valeur gamma ; et si la valeur gamma est supérieure à une seconde valeur gamma dans la plage prédéfinie de valeurs gamma, ajuster la valeur gamma à la seconde valeur gamma.
(ZH)
一种显示面板的伽马值调试方法,包括:根据待测显示面板(1007)的参数,设置预设伽马值区间;获取待测显示面板(1007)上灰阶的亮度值;计算灰阶的亮度值对应的伽马值;当伽马值小于预设伽马值区间的第一伽马值时,将伽马值调节到第一伽马值;当伽马值大于预设伽马值区间的第二伽马值时,将伽马值调节到第二伽马值。
Also published as
Latest bibliographic data on file with the International Bureau