Global Patent Index - EP 1316936 A1

EP 1316936 A1 2003-06-04 - Method and apparatus for driving a plasma display panel

Title (en)

Method and apparatus for driving a plasma display panel

Title (de)

Verfahren und Vorrichtung zur Ansteuerung einer Plasma-Anzeigetafel

Title (fr)

Procédé et dispositif de commande d'un panneau d'affichage à plasma

Publication

EP 1316936 A1 (EN)

Application

EP 01250422 A

Priority

EP 01250422 A

Abstract (en)

The invention relates to a method for processing data of video pictures for displaying the pictures on a display device like a plasma display panel. For having a good video picture quality one key characteristic is to have a good response fidelity of the plasma cells. This is not always the case since the fidelity of each cell depends on the excitation of the neighboring cells. The so-called neighborhood effect can reduce the vertical sharpness in the picture. The invention solves this problem with a vertical peaking process in which it is analysed whether the cell excitation in an activated sub-field after an inactivated sub-field for a current pixel gets support by a parallel cascaded cell excitation of a neighbouring cell. If no such support is found, the sub-field code word for the current pixel is modified in such a manner that the entry in the sub-field code word for the inactivated sub-field is replaced by an entry for an activated sub-field. In this way it is assured that cell excitation in the activated sub-fields for the current pixel is supported by a parallel cascaded cell excitation in the neighbouring cell in order to maintain the cascade effect. <IMAGE>

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

G09G 3/28

IPC 8 full level (invention and additional information)

G09G 3/20 (2006.01); G09G 3/28 (2013.01); G09G 3/292 (2013.01)

CPC (invention and additional information)

G09G 3/2033 (2013.01); G09G 3/2029 (2013.01); G09G 3/2803 (2013.01); G09G 3/2927 (2013.01); G09G 2320/0238 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1316936 A1 20030604; AU 2002365459 A1 20030610; TW 200409072 A 20040601; WO 03046873 A1 20030605

INPADOC legal status


2004-09-01 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031205

2004-04-01 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

2004-02-25 [AKX] PAYMENT OF DESIGNATION FEES

2003-06-04 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2003-06-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI