Picture tube having a plurality of guns

Details Picture tube having a plurality of guns Picture tube having a plurality of guns

1993-11-12

1995-05-23

Pascal, Robert J.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Plural cathode-ray tubes in the circuit

313 21, 313413, 313427, 348806, 348809, 348811, H01J 2998

Patent

active

054184266

ABSTRACT:
It is known to provide a large screen area using a picture tube having a plurality of guns. The object is to provide a transition of continuous brightness, so that the partial picture transitions are no longer perceptible.
This is achieved in that a picture tube without a shadow mask, but with optical sensors, index regions and optical walls is employed, so that a precise detection of the beam is possible and the partial picture transitions are no longer perceptible.
Especially for television receivers and monitors.

REFERENCES:
patent: 3289196 (1966-11-01), Hull
patent: 4777407 (1988-10-01), Takenaka

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