EP 0348571 A1 19900103 - Cathode ray tube display monitor with stray magnetic field compensation.
Title (en)
Cathode ray tube display monitor with stray magnetic field compensation.
Title (de)
Kathodenstrahl-Monitor mit Kompensation für magnetische Streufelder.
Title (fr)
Moniteur d'affichage à tube cathodique avec compensation des fuites du champ magnétique.
Publication
Application
Priority
EP 88305986 A 19880630
Abstract (en)
The stray low frequency magnetic field (S) from an electromagnetic yoke assembly (2) which is produced in front of the CRT (1) screen (3) is compensated with a pair of coils (5 and 6) whose axes are inclined to one another to intersect on the side of the coils remote from the CRT screen. Preferably the coil axes intersect on the axes of the CRT and are equally inclined thereto.
IPC 1-7
IPC 8 full level
H04N 9/29 (2006.01); H01J 29/00 (2006.01); H01J 29/76 (2006.01)
CPC (source: EP)
H01J 29/003 (2013.01); H01J 29/76 (2013.01); H01J 2229/0015 (2013.01)
Citation (search report)
- [YD] WO 8705437 A1 19870911 - BLIXT AUTOVISION [SE]
- [Y] EP 0258891 A2 19880309 - DENKI ONKYO CO LTD [JP]
- [X] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 30, no. 12, May 1988, pages 9-10, New York, US; "Cancellation of leaked magnetic flux"
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0349098 A1 19900103; EP 0348571 A1 19900103; JP H0246085 A 19900215; JP H048997 B2 19920218
DOCDB simple family (application)
EP 89303223 A 19890418; EP 88305986 A 19880630; JP 8818889 A 19890410