Method and apparatus for correcting image errors caused by resid

Details Method and apparatus for correcting image errors caused by resid Method and apparatus for correcting image errors caused by resid

1998-11-20

2000-08-22

Wong, Don

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Pulse storing

313413, H01J 2906

Patent

active

061077437

ABSTRACT:
The invention relates to a method and apparatus for correcting image errors caused by residual magnetism in monitors and other such display devices based on picture tubes. The method according to the invention is based on the removal of residual magnetism by means of an alternating damped magnetic field. In the method, the internal and external structures in the neck part (11) of a picture tube (10) are subjected to an alternating damped magnetic field produced by means of a coil (45).

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patent: 5825131 (1998-10-01), Kim

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