Left and right raster correction

Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits

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Details

348746, H01J 2956

Patent

active

054443385

ABSTRACT:
A video display having raster correction comprises a cathode ray tube with a deflection coil mounted thereon for raster generation. A deflection amplifier is coupled to the deflection coil for generating a deflection current therein. A corrective waveform modulator is coupled to the deflection amplifier for generating a first corrective current in the deflection coil. An auxiliary coil is mounted on the cathode ray tube for raster correction. An auxiliary coil drive amplifier is coupled to the auxiliary coil for generating a second corrective current in the auxiliary coil. A first corrective signal is coupled to the waveform modulator for generating raster correction at a first raster edge and a second corrective signal is coupled to said auxiliary coil drive amplifier for generating raster correction at an edge opposite the first raster edge.

REFERENCES:
patent: 4318032 (1982-03-01), Kureha
patent: 4395662 (1983-07-01), Sexton
patent: 4433318 (1984-02-01), Okuyama et al.
patent: 4795946 (1989-01-01), Nishiyama
patent: 4816908 (1989-03-01), Colineau et al.
patent: 4935674 (1990-06-01), Rodriguez-Cavazos
patent: 5034664 (1991-07-01), Fernsler et al.

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