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1. WO2021056315 - GAMMA TUNING METHOD, GAMMA TUNING APPARATUS, AND GAMMA TUNING SYSTEM

Publication Number WO/2021/056315
Publication Date 01.04.2021
International Application No. PCT/CN2019/108082
International Filing Date 26.09.2019
IPC
G05B 13/02 2006.01
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
13Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
02electric
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 2320/0626
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
0626for control of overall brightness
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 2360/145
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2360Aspects of the architecture of display systems
14Detecting light within display terminals, e.g. using a single or a plurality of photosensors
145the light originating from the display screen
G09G 3/2003
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
2003Display of colours
Applicants
  • 京东方科技集团股份有限公司 BOE TECHNOLOGY GROUP CO., LTD. [CN]/[CN]
  • 成都京东方光电科技有限公司 CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 喻勇 YU, Yong
  • 张昌 ZHANG, Chang
  • 丁仁杰 DING, Renjie
  • 兰传艳 LAN, Chuanyan
Agents
  • 北京中博世达专利商标代理有限公司 BEIJING ZBSD PATENT&TRADEMARK AGENT LTD.
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) GAMMA TUNING METHOD, GAMMA TUNING APPARATUS, AND GAMMA TUNING SYSTEM
(FR) PROCÉDÉ DE RÉGLAGE GAMMA, APPAREIL DE RÉGLAGE GAMMA ET SYSTÈME DE RÉGLAGE GAMMA
(ZH) 伽马校正方法、伽马校正装置及伽马校正系统
Abstract
(EN)
A gamma tuning method, which is applied in a display screen to be debugged, and comprises: setting a plurality of reference nodes for a color of said display screen, each of the plurality of reference nodes representing the mapping relation between a reference brightness adjustment value and a reference gamma section, and sorting the plurality of reference nodes in ascending order in or descending order of the reference brightness adjustment value; setting at least one transition node between two adjacent reference nodes, each of the at least one transition node representing the mapping relation between a transition brightness adjustment value and a transition gamma section; and obtaining, according to the plurality of reference nodes and the at least one transition node, a brightness adjustment curve representing the correspondence between the brightness adjustment value and the gamma section, wherein each gamma section represents a set of register values corresponding to each gray scale of the color under the brightness adjustment value corresponding to the gamma section.
(FR)
Procédé de réglage gamma appliqué dans un écran d'affichage à déboguer et comprenant : le réglage d'une pluralité de nœuds de référence pour une couleur dudit écran d'affichage, chacun de la pluralité de nœuds de référence représentant la relation de correspondance entre une valeur de réglage de luminosité de référence et une section gamma de référence, et le tri de la pluralité de nœuds de référence dans l'ordre croissant ou dans l'ordre décroissant de la valeur de réglage de luminosité de référence ; le réglage d'au moins un nœud de transition entre deux nœuds de référence adjacents, chacun desdits nœuds de transition représentant la relation de correspondance entre une valeur de réglage de luminosité de transition et une section gamma de transition ; et l'obtention, en fonction de la pluralité de nœuds de référence et du ou des nœuds de transition, d'une courbe de réglage de luminosité représentant la correspondance entre la valeur de réglage de luminosité et la section gamma, chaque section gamma représentant un ensemble de valeurs de registre correspondant à chaque échelle de gris de la couleur sous la valeur de réglage de luminosité correspondant à la section gamma.
(ZH)
一种伽马校正方法,应用于待调试显示屏,包括:对于待调试显示屏的一个颜色,设置多个参考节点,所述多个参考节点中的每个参考节点表示参考亮度调节值和参考伽马段的映射关系,按照参考亮度调节值由小到大或由大到小的次序对所述多个参考节点进行排序。在相邻两个参考节点之间设置至少一个过渡节点,所述至少一个过渡节点中的每个过渡节点表示过渡亮度调节值和过渡伽马段的映射关系。根据所述多个参考节点和所述至少一个过渡节点,得到表征亮度调节值与伽马段的对应关系的亮度调节曲线;其中,所述每个伽马段表征在该伽马段对应的亮度调节值下,所述颜色的各灰阶对应的寄存器数值的集合。
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