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1. (WO1998052182) DISPLAY SYSTEM WITH BRIGHTNESS CORRECTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052182 International Application No.: PCT/GB1997/001315
Publication Date: 19.11.1998 International Filing Date: 14.05.1997
IPC:
G09G 3/20 (2006.01) ,G09G 3/32 (2006.01)
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20
for 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
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20
for 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
22
using controlled light sources
30
using electroluminescent panels
32
semiconductive, e.g. diodes
Applicants:
UNISPLAY S.A. [CH/CH]; 56, Grand-Rue CH-1700 Fribourg, CH (AllExceptUS)
SALAM, Hassan, Paddy, Abdel [GB/GB]; GB (UsOnly)
Inventors:
SALAM, Hassan, Paddy, Abdel; GB
Agent:
CRAWFORD, Andrew, Birkby; A.A. Thornton & Co. Northumberland House 303-306 High Holborn London WC1V 7LE, GB
Priority Data:
Title (EN) DISPLAY SYSTEM WITH BRIGHTNESS CORRECTION
(FR) SYSTEME D'AFFICHAGE AVEC CORRECTION DE LA LUMINOSITE
Abstract:
(EN) A display matrix having LED lamps L is arranged so that the effect of brightness and color variations between the lamps, due to the lamps having different characteristics and temperatures from each other, is reduced. A process for setting up the display using an electronic camera (21) is described. The system is arranged so that the brilliance of the lamps is automatically maximised when the sun is shining on the face of the display.
(FR) L'invention concerne une matrice d'affichage comportant des lampes à diodes électroluminescentes, conçue de façon à atténuer l'effet des variations de luminosité et de couleur entre les lampes dues au fait que celles-ci ont des caractéristiques et des températures différentes les unes des autres. L'invention concerne également un procédé permettant de régler le dispositif d'affichage au moyen d'une caméra électronique (21). Le système est conçu de façon à maximiser automatiquement la brillance des lampes quand le soleil éclaire la face du dispositif d'affichage.
Designated States: CH, CN, GB, JP, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)