EP 0269504 B1 19910220 - METHOD AND DEVICE FOR ADJUSTING STATIC CONVERGENCE AND/OR PURITY FOR A COLOUR TELEVISION TUBE
Title (en)
METHOD AND DEVICE FOR ADJUSTING STATIC CONVERGENCE AND/OR PURITY FOR A COLOUR TELEVISION TUBE
Publication
Application
Priority
FR 8615672 A 19861112
Abstract (en)
[origin: EP0269504A1] Method and device for adjusting static convergence and/or purity for a colour television tube with the aid of permanent magnets. Magnetisable elements (18) are fixed around the colour television tube. These elements are uniformly distributed around the axis (14) of the tube. In order to correct errors in static convergence and/or in purity, each element (181...188) is magnetised with the aid of a corresponding coil (23) with position and dimensions such that the element (18) is subjected to only the lone field inside the turns of the coil. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 9/44 (2006.01); H01J 29/54 (2006.01); H01J 29/70 (2006.01)
CPC (source: EP US)
H01J 29/703 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
EP 0269504 A1 19880601; EP 0269504 B1 19910220; CN 1018109 B 19920902; CN 87102951 A 19880525; DE 3768072 D1 19910328; FR 2606550 A1 19880513; FR 2606550 B1 19890113; HK 25096 A 19960216; JP 2680000 B2 19971119; JP S63138633 A 19880610; SG 16194 G 19940610; US 4896071 A 19900123
DOCDB simple family (application)
EP 87402513 A 19871106; CN 87102951 A 19870421; DE 3768072 T 19871106; FR 8615672 A 19861112; HK 25096 A 19960208; JP 28322287 A 19871111; SG 16194 A 19940128; US 11944587 A 19871112