Global Patent Index - EP 1055322 A1

EP 1055322 A1 2000-11-29 - DISPLAY DEVICE WITH IMPROVED REPRESENTATION OF THE SHADES OF GREY

Title (en)

DISPLAY DEVICE WITH IMPROVED REPRESENTATION OF THE SHADES OF GREY

Title (de)

ANZEIGEVORRICHTUNG MIT VERBESSERTER GRAUSTUFENDARSTELLUNG

Title (fr)

DISPOSITIF D'AFFICHAGE A REPRESENTATION AMELIOREE DES NIVEAUX DE GRIS

Publication

EP 1055322 A1 (DE)

Application

EP 99962179 A

Priority

  • DE 19857761 A
  • EP 9909265 W

Abstract (en)

[origin: DE19857761A1] The invention relates to a display device for the improved representation of shade of grey images. Said device comprises a monitor (31) which is controlled by s electrode beams. A correcting unit (33) is provided in order to produce s output image signals AS from an image signal (34); said output image signals AS containing shade of grey values from an amount K of correction grey scale and said image signal (34) containing shade of grey values from an amount M of original shade of grey (23). The s output image signals AS are fed to an electrode beam respectively and represent a brightness-controlled shade of grey on a point of the monitor (31) after D/A conversion in order to adapt the brightness distribution of the monitor to the optimum perceptional brightness distribution.

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

H04N 5/20

IPC 8 full level (invention and additional information)

H04N 5/66 (2006.01); G06T 5/40 (2006.01); G09G 1/00 (2006.01); G09G 1/20 (2006.01)

CPC (invention and additional information)

G06T 5/009 (2013.01); G06T 2207/10116 (2013.01)

Citation (search report)

See references of WO 0036825A1

Designated contracting state (EPC)

DE FR GB NL

EPO simple patent family

DE 19857761 A1 20000621; EP 1055322 A1 20001129; JP 2002532767 A 20021002; US 6618056 B1 20030909; WO 0036825 A1 20000622

INPADOC legal status


2008-07-09 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20071025

2007-07-18 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20070614

2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB NL

2003-05-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

2003-05-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH

2002-10-02 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

2002-10-02 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH

2001-02-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001222

2000-11-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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