Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

1989-08-28

1990-12-11

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 71, 358 64, 315368, 315375, H01J 2950

Patent

active

049774476

ABSTRACT:
A color cathode ray tube (CRT) arrangement utilizing only a single electron gun. A single electron beam, emitted from the single gun, is deflected in such a manner as to simulate the three electron beams that would normally be provided by three separate electron guns in a conventional CRT arrangement. The single electron beam is electrostatically deflected by electrodes according to a three stage cycle to simulate three electron beams directed in different directions. The simulated electron beams are deflected by a supplemental coil to correct for convergence error. The three electron beams are deflected by the main deflection coils of the tube's yoke and then pass through apertures of the tube's shadow mask to impinge on phosphor stripes of a screen formed on a face plate of the tube.

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patent: 2672575 (1954-03-01), Werenfels
patent: 2688048 (1954-08-01), Rose
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patent: 2977408 (1961-03-01), Welch
patent: 3638065 (1972-01-01), Ueno
patent: 3671896 (1972-06-01), Torsch
patent: 3952227 (1976-04-01), Van alphen

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