EP 1258858 A1 20021120 - Dynamic color calibration method
Title (en)
Dynamic color calibration method
Title (de)
Dynamisches Farbeichungsverfahren
Title (fr)
Procédé dynamique de calibrage de couleurs
Publication
Application
Priority
EP 01112259 A 20010518
Abstract (en)
A dynamic color temperature and color deviation calibration method is provided for eliminating problems associated with color temperature change and color deviation caused by an emissivity change of red, green and blue phosphor layers of a plasma display panel (PDP). The method comprises the steps of utilizing laws of color matching for calculating an emissivity change of a pixel of the PDP in response to a brightness change of one of red, green, and blue lights emitted by a corresponding one of red, green and blue discharge cells of the PDP through a numeric operation; dynamically adjusting brightness of one of the emitted red, green, and blue lights by increasing or decreasing strength of input video signal of each of the discharge cells; and eliminating a color temperature and a color deviation of the PDP due to an emissivity change. This can render an image having an optimum color purity and color temperature by eliminating adverse effects on PDP due to emissivity change. <IMAGE>
IPC 1-7
IPC 8 full level
G09G 3/28 (2006.01)
CPC (source: EP)
G09G 3/2003 (2013.01); G09G 3/288 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/041 (2013.01); G09G 2320/0626 (2013.01); G09G 2320/0666 (2013.01)
Citation (search report)
- [X] US 5045846 A 19910903 - GAY MICHEL [FR], et al
- [X] EP 1065648 A2 20010103 - FUJITSU LTD [JP]
- [A] US 4709262 A 19871124 - SPIETH ROBERT H [US], et al
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01112259 A 20010518