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1. WO1999056088 - METHOD TO ESTIMATE THE WHITE POINT ON A DISPLAY DEVICE

Publication Number WO/1999/056088
Publication Date 04.11.1999
International Application No. PCT/US1998/015707
International Filing Date 20.07.1998
Chapter 2 Demand Filed 24.11.1999
IPC
G01D 18/00 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
18Testing or calibrating apparatus or arrangements provided for in groups G01D1/-G01D15/124
G02B 7/00 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7Mountings, adjusting means, or light-tight connections, for optical elements
G03F 3/08 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
3Colour separation; Correction of tonal value
08by photoelectric means
G06T 1/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
1General purpose image data processing
G09G 1/28 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
1Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators
28using colour tubes
G09G 5/10 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
5Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
10Intensity circuits
CPC
G09G 2320/0666
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
0666for control of colour parameters, e.g. colour temperature
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 5/02
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
5Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
02characterised by the way in which colour is displayed
H04N 9/73
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
64Circuits for processing colour signals
73colour balance circuits, e.g. white balance circuits, colour temperature control
Applicants
  • ADOBE SYSTEMS INCORPORATED [US]/[US] (AT, BE, CA, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, JP, LU, MC, NL, PT, SE)
  • GENTILE, Ronald, S. [US]/[US] (UsOnly)
  • DANCIU, Ioana, M. [CA]/[US] (UsOnly)
Inventors
  • GENTILE, Ronald, S.
  • DANCIU, Ioana, M.
Agents
  • BOROVOY, Roger, S.
Priority Data
09/066,08024.04.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD TO ESTIMATE THE WHITE POINT ON A DISPLAY DEVICE
(FR) PROCEDE PERMETTANT D'ESTIMER LE POINT BLANC D'UN DISPOSITIF D'AFFICHAGE
Abstract
(EN)
Methods and apparatus for estimating a white point of a display device (100) include displaying a plurality of gray patches on a display screen of the display device (106); requesting that a user select a patch corresponding to a neutral gray (108); and iteratively converging (112 and 116) to a patch where the estimated white point is the most neutral gray point (118).
(FR)
L'invention concerne des procédés et des appareils permettant d'estimer le point blanc d'un dispositif d'affichage (100). Ces procédés consistent à afficher une pluralité de zones grises sur l'écran d'affichage d'un dispositif (106); à demander qu'un utilisateur sélectionne une zone correspondant à un gris neutre (108); et à focaliser de façon itérative (112 et 116) vers une zone où le point blanc estimé est le point gris le plus neutre (118).
Also published as
Latest bibliographic data on file with the International Bureau