(19)
(11) EP 1 801 770 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.06.2016 Bulletin 2016/25

(43) Date of publication A2:
27.06.2007 Bulletin 2007/26

(21) Application number: 06125983.4

(22) Date of filing: 13.12.2006
(51) International Patent Classification (IPC): 
G09G 3/28(2006.01)
G09G 3/20(2006.01)
(84) Designated Contracting States:
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 States:
AL BA HR MK RS

(30) Priority: 20.12.2005 EP 05292769

(71) Applicant: Thomson Licensing
92130 Issy-les-Moulineaux (FR)

(72) Inventors:
  • THEBAULT, Cédric
    92648, BOULOGNE CEDEX (FR)
  • CORREA, Carlos
    92648, BOULOGNE CEDEX (FR)
  • ZWING, Rainer
    92648, BOULOGNE CEDEX (FR)

(74) Representative: Le Dantec, Claude 
Technicolor 1, rue Jeanne d'Arc
92443 Issy-les-Moulineaux
92443 Issy-les-Moulineaux (FR)

   


(54) Method and device for processing video pictures


(57) The invention relates to a method for processing video pictures data for display on a display device having a plurality of luminous elements corresponding to the pixels of a video picture. The invention is related to every kind of display devices based on the principle of duty cycle modulation (pulse width modulation) of light emission and comprising a data driver.
The aim of this method is to reduce the data driver overheating by optimizing the dithering of the pixel values of the video pictures. According to the invention, the pixel values used for dithering are chosen for reducing the state changes between successive bits of subfield code words of adjacent luminous elements.







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