Global Patent Index - EP 0653740 B1

EP 0653740 B1 2000-04-26 - Controlling the gray scale of plasma display devices

Title (en)

Controlling the gray scale of plasma display devices

Title (de)

Graustufensteuerung für Plasma-Anzeigevorrichtungen

Title (fr)

Commande d'échelle de gris pour des dispositifs d'affichage à plasma

Publication

EP 0653740 B1 (EN)

Application

EP 94300695 A

Priority

JP 28834593 A

Abstract (en)

[origin: EP0653740A2] A method of controlling the gray scale of a plasma display device has a forming step of forming a frame for an image by a plurality of subframes each having a different brightness, a setting step of setting the number of sustain emissions of the each subframe individually for each subframe, and a displaying step of displaying the image on the plasma display device by a gray scale display having a specific brightness. The number of sustain emissions in each subframe is set individually by the individual subframe, and this can establish a linear relation between the gray level and the corresponding brightness. Therefore, an enhancement of display quality of the plasma display device can be realized. <IMAGE> <IMAGE>

IPC 1-7 (main, further and additional classification)

G09G 3/28

IPC 8 full level (invention and additional information)

G09G 3/28 (2013.01); G09G 3/20 (2006.01); G09G 3/288 (2013.01); G09G 3/291 (2013.01); G09G 3/294 (2013.01); G09G 3/298 (2013.01)

CPC (invention and additional information)

G09G 3/2029 (2013.01); G09G 3/2932 (2013.01); G09G 3/2935 (2013.01); G09G 3/2946 (2013.01); G09G 3/298 (2013.01); G09G 3/2927 (2013.01); G09G 2320/0228 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/046 (2013.01); G09G 2330/02 (2013.01); G09G 2330/021 (2013.01); G09G 2360/145 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family

EP 0653740 A2 19950517; EP 0653740 A3 19960626; EP 0653740 B1 20000426; DE 69424122 D1 20000531; DE 69424122 T2 20010201; DE 69431681 D1 20021212; DE 69431681 T2 20030313; EP 0887785 A2 19981230; EP 0887785 A3 20000329; EP 0887785 B1 20021106; JP 2856241 B2 19990210; JP H07140928 A 19950602; KR 970000911 B1 19970121