Raster edge correction waveform

Details Raster edge correction waveform Raster edge correction waveform

1994-05-11

1996-02-13

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

H01J 2956

Patent

active

054913896

ABSTRACT:
A video display having deflection correction comprising a cathode ray tube with a deflection coil mounted on the cathode ray tube for generation of a raster having horizontal line length variations which describe a generally sinusoidally shaped raster edge. A deflection amplifier is coupled to the deflection coil for generating a deflection current therein. A modulator is coupled to the deflection coil for generating a corrective current therein responsive to a corrective signal. A corrective signal generator for generating said corrective signal having a generally sinusoidal shape is coupled to the modulator for raster edge correction.

REFERENCES:
patent: 4733140 (1988-03-01), Oliver
patent: 4777412 (1988-10-01), Leonardi
patent: 4968919 (1990-11-01), Oliver
patent: 5034664 (1991-07-01), Fernsler et al.
U.S. Application Sn. 08/099,377, Deflection Waveform Correction Circuit, FIGS. 1 & 4.
Copy Euronean search report dated Sep. 15 1995, two pages plus cover page.

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