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

H - Electricity

01

J

350/101, 355/13

H01J 29/70 (2006.01) H04N 3/223 (2006.01)

Patent

CA 1235822

REGULATION OF PICTURE SIZE WITH VARYING SCAN FREQUENCY Abstract of the Disclosure 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.

483682

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