Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1988-09-15
1989-11-14
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315370, H01J 2956
Patent
active
048810150
ABSTRACT:
In a color cathode-ray apparatus, electron beams emitted from an electron gun assembly are deflected along horizontal and vertical axes by horizontal and vertical deflecting units. The horizontal deflecting unit includes first and second horizontal deflecting yokes which are located such that the center of the second horizontal deflecting yoke is defined between the center of the first horizontal deflecting yoke and the electron gun assembly. First and second horizontal deflection currents are supplied to the first and second horizontal deflecting yokes and are changed in different manners, in accordance with a degree to which the electron beams are to be deflected, and the first and seocnd deflection yokes generate pincushion and barrel magnetic fields, respectively.
REFERENCES:
patent: 4704564 (1987-11-01), Ito et al.
Morohashi Katsuei
Shimokobe Jiro
Shimoma Taketoshi
Blum Theodore M.
Kabushiki Kaishia Toshiba
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