Method for correcting the effect of terrestrial magnetism on ele

Details Method for correcting the effect of terrestrial magnetism on ele Method for correcting the effect of terrestrial magnetism on ele

1994-07-11

1996-04-23

Pascal, Robert J.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Pulse storing

315 85, 315370, H05B 3702, H01J 2906

Patent

active

055106773

ABSTRACT:
A method and apparatus for correcting the tracking of an electron beam which includes the steps of generating a supplemental magnetic field, generating a reverse magnetic field and removing the correcting magnetic field. The direction of the supplemental magnetic field is substantially the same as the direction of a terrestrial magnetism. The reverse magnetic field substantially offsets the terrestrial magnetism.

REFERENCES:
patent: 3571652 (1971-03-01), Shiebara et al.
patent: 5148083 (1992-09-01), Hatada

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