EP 1058923 A1 20001213 - LIGHT DISPLAY PANEL CONTROL
Title (en)
LIGHT DISPLAY PANEL CONTROL
Title (de)
STEUERUNG FÜR EINE LEUCHTANZEIGETAFEL
Title (fr)
COMMANDE D'UN PANNEAU D'AFFICHAGE LUMINEUX
Publication
Application
Priority
- FR 9900475 W 19990303
- FR 9802694 A 19980305
Abstract (en)
[origin: US6756952B1] The disclosure concerns a light display panel with a matrix of pixels each comprising three monochrome electroluminescent diodes of three colors. The diodes are controlled by a control circuit delivering electrical power P to each diode, said electrical power being expressed in the form P-k.Pr, wherein Pr is a reference electrical power particular to the diodes of each color and k is a coefficient selected according to the display to be presented. Over the course of time the reference electrical power is subjected to different variations depending on the colors, to compensate for the aging of the diodes.
IPC 1-7
IPC 8 full level
G09F 9/33 (2006.01); G09F 15/00 (2006.01); G09G 3/12 (2006.01); G09G 3/30 (2006.01); G09G 3/32 (2006.01)
CPC (source: EP US)
G09G 3/12 (2013.01 - EP US); G09G 3/32 (2013.01 - EP US); G09G 2320/043 (2013.01 - EP US)
Citation (search report)
See references of WO 9945525A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6756952 B1 20040629; AT E241844 T1 20030615; AU 3257499 A 19990920; DE 69908309 D1 20030703; DE 69908309 T2 20040429; DK 1058923 T3 20030922; EP 1058923 A1 20001213; EP 1058923 B1 20030528; ES 2199586 T3 20040216; FR 2775821 A1 19990910; FR 2775821 B1 20000526; PT 1058923 E 20030930; WO 9945525 A1 19990910
DOCDB simple family (application)
US 62353402 A 20020215; AT 99938008 T 19990303; AU 3257499 A 19990303; DE 69908309 T 19990303; DK 99938008 T 19990303; EP 99938008 A 19990303; ES 99938008 T 19990303; FR 9802694 A 19980305; FR 9900475 W 19990303; PT 99938008 T 19990303