Electric lamp and discharge devices – Cathode ray tube – Beam deflecting means
Patent
1997-10-28
1999-08-03
O'Shea, Sandra
Electric lamp and discharge devices
Cathode ray tube
Beam deflecting means
313413, 313437, 313442, 335210, 335213, 335297, 335299, H01J 2970, H01J 2950, H01J 2946, H01H 100
Patent
active
059329599
ABSTRACT:
A deflection yoke for a cathode ray tube can correct both the pincushion distortion at the upper and lower edges of the screen and the misconvergence of the screen at the same time by the deflection yoke itself without the need for a correction magnet. The deflection yoke comprises a saddle shaped horizontal deflection coil, a saddle shaped vertical deflection coil located outside the horizontal deflection coil, and a high permeability core located outside the vertical deflection coil. The core has notch portions at the center parts of the upper and lower portions of the screen side end.
REFERENCES:
patent: 3891951 (1975-06-01), Talsma
patent: 3913042 (1975-10-01), Talsma
patent: 4229720 (1980-10-01), Heijnemans et al.
patent: 4233582 (1980-11-01), Abe et al.
Ishii Akitsugu
Ose Toshio
Shimada Koji
Haynes Mack
Matsushita Electronics Corporation
O'shea Sandra
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