Anode voltage deflection gain control for cathode ray displays

Details Anode voltage deflection gain control for cathode ray displays Anode voltage deflection gain control for cathode ray displays

1980-09-15

1981-10-27

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315375, 358 73, H01J 2956

Patent

active

042976189

ABSTRACT:
A compensating gain control system provides improved operation of the deflection channels of cathode ray color displays, particularly a display of the penetration phosphor type. A sample of the indicator anode voltage is taken and the square root of the sample is derived. Each deflection current wave form is multiplied by the square root signal, thus providing a deflection drive current accurately scaled to anode voltage changes.

REFERENCES:
patent: 3772566 (1973-11-01), Schwartz
patent: 4092566 (1978-05-01), Chambers et al.
patent: 4223252 (1980-09-01), Doran
patent: 4258298 (1981-03-01), Hilburn et al.

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