Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1976-11-01
1978-08-22
Wilbur, Maynard R.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315 13C, 313412, 313428, H01J 2970, H01J 2976
Patent
active
RE0297402
ABSTRACT:
A color cathode ray tube preferably of the single gun, plural beam type wherein the beams originate on a horizontal or vertical straight line and are directed into a field produced by a horizontal-vertical electromagnetic deflection yoke at predetermined incident angles to each other so as to converge at a color screen, is provided with a magnetic yoke, for example, secured to the electron beam convergence plates at the end of the electron gun so as to be disposed in the path of the leakage flux produced by the horizontal-vertical electromagnetic deflection yoke, and thereby impart a further vertical or horizontal deflection field to at least one of the plural beams for correcting a deviation between the positions of rasters on the color screen produced by the plural beams.
REFERENCES:
patent: 2925542 (1960-02-01), Gethmann
patent: 3188508 (1965-06-01), Thomas
patent: 3307067 (1967-02-01), Jachim et al.
patent: 3430099 (1969-02-01), Ashley
patent: 3448316 (1969-06-01), Yoshida et al.
patent: 3505560 (1970-04-01), Marvin
Miyaoka Senri
Morio Minoru
Ohgoshi Akio
Yoshida Susumu
Blum T. M.
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
Wilbur Maynard R.
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