Global Patent Index - EP 1010162 A1

EP 1010162 A1 2000-06-21 - SCREEN CONTROL WITH CATHODES HAVING LOW ELECTRONIC AFFINITY

Title (en)

SCREEN CONTROL WITH CATHODES HAVING LOW ELECTRONIC AFFINITY

Title (de)

STEUERUNG EINER ANZEIGETAFEL MIT KATHODEN NIEDRIGER ELEKTRONENAFFINITÄT

Title (fr)

COMMANDE D'UN ECRAN A CATHODES A FAIBLE AFFINITE ELECTRONIQUE

Publication

EP 1010162 A1 (FR)

Application

EP 99929382 A

Priority

  • FR 9901597 W
  • FR 9808555 A

Abstract (en)

[origin: FR2780803A1] The invention concerns a control system for controlling a matrix of picture elements each comprising a cathode made of a material with low electronic affinity. Each crosspoint circuit comprises a switching device (Cti.j) associated with a cathode of a picture element and enables, by means of memory circuits (M1, M2) to connect said cathode to a current source for a time interval sufficient for all the matrix lines to be controlled and for adjusting the current conduction of the corresponding picture element. The invention is useful for controlling electronic guns and display screens.

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

G09G 3/22

IPC 8 full level (invention and additional information)

H01J 29/96 (2006.01); G09G 3/20 (2006.01); G09G 3/22 (2006.01); H01J 31/12 (2006.01)

CPC (invention and additional information)

G09G 3/22 (2013.01); G09G 2300/0842 (2013.01)

Citation (search report)

See references of WO 0002183A1

Designated contracting state (EPC)

FR GB

EPO simple patent family

FR 2780803 A1 20000107; FR 2780803 B1 20021031; EP 1010162 A1 20000621; JP 2002520640 A 20020709; US 6356028 B1 20020312; WO 0002183 A1 20000113

INPADOC legal status


2007-10-24 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20070503

2007-01-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20061222

2001-10-04 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: THALES

2000-06-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991222

2000-06-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): FR GB