Single gun color picture tube brightener

Details Single gun color picture tube brightener Single gun color picture tube brightener

1977-01-11

1979-02-13

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

313409, 313441, 315 13CG, 358 74, H04N 918

Patent

active

041398610

ABSTRACT:
A means is disclosed for selectively and collectively increasing the emission of each color cathode of a single gun color picture tube. By placing a variable resistance between each color cathode and the control grid, this provides a source for increasing the voltage between the control grid and the selected color cathode. As the resistance of the control is decreased the emission of that color cathode is increased, thereby making it possible to increase emission on any or all cathodes.

REFERENCES:
patent: 3059140 (1962-10-01), Heuer
patent: 3927346 (1975-12-01), Spannhake
patent: 3967314 (1976-06-01), Anglin

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