System for compensating for intensity variations and beam landin

Details System for compensating for intensity variations and beam landin System for compensating for intensity variations and beam landin

1981-10-14

1983-03-08

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315383, H01J 2970, H01J 2972

Patent

active

043762603

ABSTRACT:
A system for correcting for intensity variations and electron beam landing errors in a flat panel display device includes two compensation means. The first compensation means applies a continuously varying voltage to the modulation electrodes to add a varying current to the electron beam current. The compensation current offsets the intensity variations of the electron beam. The second compensation means applies an averaged position signal to the modulation electrodes to compensate for beam landing errors of the electron beam.

REFERENCES:
patent: 4099092 (1978-07-01), Bristow
patent: 4117368 (1978-09-01), Marlowe et al.
patent: 4121137 (1978-10-01), Credelle
patent: 4126814 (1978-11-01), Marlowe
patent: 4183053 (1980-01-01), Tomii et al.

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