Method and apparatus for optimizing color purity in a color kine

Details Method and apparatus for optimizing color purity in a color kine Method and apparatus for optimizing color purity in a color kine

1977-03-31

1979-01-30

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 962

Patent

active

041375483

ABSTRACT:
A set of auxiliary deflection coils are placed on opposite sides of a multibeam color television picture tube having a deflection yoke and color purity adjustment apparatus. The tube is operated to cause a raster to be scanned. The auxiliary coils are energized to cause the beams to be deflected to the left from their normal beam landing sites by a predetermined amount during at least one vertical field and to the right for the nominal beam sites by a predetermined amount during at least one vertical field in order to simulate beam landing errors caused by factors present in the television tube use environment. Color purity is then adjusted in the presence of the simulated beam landing errors.

REFERENCES:
patent: 3916437 (1975-10-01), Barbin
patent: 4001877 (1977-01-01), Simpson

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