Beam-indexing color picture tube arrangement

Details Beam-indexing color picture tube arrangement Beam-indexing color picture tube arrangement

1982-09-16

1985-03-26

Demeo, Palmer

Electric lamp and discharge devices

Cathode ray tube

Screen

313474, 313478, H01J 2989, H01J 2918

Patent

active

045075859

ABSTRACT:
A frontal light extraction type beam-indexing color picture tube arrangement comprises a phosphor screen which is formed on the inner surface of the tube panel and includes an array of color phosphor stripes each of which has an appropriate afterglow time and an array of index phosphor stripes each of which has a short afterglow time and emits a light index signal representative of the scanning position of an electron beam in the forward direction of the tube panel. A photoelectric converter for receiving the light index signal is provided in front of the tube panel.

REFERENCES:
patent: 2932756 (1960-04-01), Liebscher
patent: 2945087 (1960-07-01), Graham et al.
patent: 3005125 (1961-10-01), Evans et al.
patent: 3154715 (1964-10-01), Jackson et al.
patent: 3691424 (1972-09-01), Goodman

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