Regulation of picture size with varying scan frequency

Details Regulation of picture size with varying scan frequency Regulation of picture size with varying scan frequency

1985-06-27

1987-07-07

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

358190, H01J 2970, H01J 2976

Patent

active

046792112

ABSTRACT:
The output voltage of a variable output voltage power supply is supplied to the deflection system of a raster scanned CRT and is controlled by a frequency responsive control signal generator so as to maintain peak to peak deflection current substantially constant despite scanning frequency variations. Picture width and/or height may be controlled in this way.

REFERENCES:
patent: 4536684 (1985-08-01), Babcock

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