EP 1768088 A3 20090513 - Method and device for encoding luminance values into subfield code words in a display device
Title (en)
Method and device for encoding luminance values into subfield code words in a display device
Title (de)
Verfahren und Vorrichtung zur Kodierung von Luminanzwerten in Teilfeldkodewörter bei einer Anzeigevorrichtung
Title (fr)
Procédé et dispositif pour coder des valeurs de luminance dans des mots codés de sous-trames dans un dispositif d'affichage
Publication
Application
Priority
- EP 05291973 A 20050922
- EP 06120447 A 20060911
Abstract (en)
[origin: EP1768088A2] The invention relates to a method and a device for encoding the luminance value of a pixel of a picture into a subfield code word in a display device. It can be applied to every display device using a PWM (Pulse Width Modulation) technology and subfields for displaying video picture. It can be used to compensate for any luminance problem that can be estimated. The general idea of the recursive coding is to encode one sub-field after the other in order to be able to compensate for problems occurring on one sub-field with the other sub-fields. More particularly, the bits of a subfield code word are computed recursively one after the other such that the defects (e.g. line load and/or linearity) in the light emission or luminance generated by a bit of the subfield code word can be compensated by the following bits of the subfield code word.
IPC 8 full level
G09G 3/20 (2006.01)
CPC (source: EP)
G09G 3/2029 (2013.01); G09G 3/2051 (2013.01); G09G 3/2077 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0266 (2013.01); G09G 2320/0673 (2013.01); G09G 2360/16 (2013.01)
Citation (search report)
- [X] EP 0973147 A1 20000119 - MATSUSHITA ELECTRONICS CORP [JP]
- [A] US 6100859 A 20000808 - KURIYAMA HIROHITO [JP], et al
- [A] US 6069609 A 20000530 - ISHIDA KATSUHIRO [JP], et al
- [A] US 5596349 A 19970121 - KOBAYASHI MITSUGU [JP], et al
- [A] EP 0822536 A2 19980204 - FUJITSU LTD [JP], et al
- [A] WO 2005059879 A1 20050630 - THOMSON LICENSING SA [FR], et al
- [A] WO 2005041162 A1 20050506 - THOMSON LICENSING SA [FR], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 06120447 A 20060911