Color-picture tube without shadow mask and with only one electro

Details Color-picture tube without shadow mask and with only one electro Color-picture tube without shadow mask and with only one electro

1981-02-04

1983-01-18

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 68, H04N 924

Patent

active

043694608

ABSTRACT:
In a single gun, horizontal stripe color picture tube, including a deflection system for scanning a single beam across groups of horizontal strips coated on a screen, chromaticity of colors to be produced is determined by position of the beam spot within a stripe-group and by the beam current. A vertical, comb-shaped electrode having teeth aligned with groups of strips is mounted along at least one vertical edge of the screen, outside the optically used area of the screen. Means are coupled to the electrode for producing a control signal having a magnitude determined by the displacement of the beam from a desired vertical position relative to the teeth of the electrode which control signal is applied to the deflection system for correcting the displacement.

REFERENCES:
patent: 2685047 (1954-07-01), Moore
patent: 2752416 (1956-06-01), Sziklai
patent: 3939486 (1976-02-01), Tomii

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