Beamed-intensity control systems for cathode-ray tubes

Details Beamed-intensity control systems for cathode-ray tubes Beamed-intensity control systems for cathode-ray tubes

1973-08-29

1976-06-22

Tubbesing, T.H.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

307232, 328110, H01J 2952

Patent

active

039653897

ABSTRACT:
A logical circuit for maintaining uniform the density of the trace made on a photographic negative by the beam of a CR tube where the beam is subject to displacements in X and Y coordinate directions. The circuit includes a first bistable stage which represents by its state which (X or Y) displacement occurred last, and so controls (by way of a gating network and a second bistable stage) the beam intensity as to briefly reduce it whenever X and Y displacements occur alternately.

REFERENCES:
patent: 3482309 (1969-12-01), Bouchard
patent: 3591853 (1971-07-01), Jarvis et al.
patent: 3718834 (1973-02-01), Bacon et al.

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