System for compensating for intensity variations and beam landing errors in flat panel display devices
AssigneeRCA Corporation
InventorJohn P. Russell
Life of this patent
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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.
Claims5
A system for compensating for intensity variations and electron beam landing errors in a flat panel display device having at least one beam guide for propagating said electron beam and a modulator for varying said electron beam in accordance with video information comprising:
- first means for applying a continuously variable signal to said modulator to compensate for intensity variations of said electron beams;
- second means for applying an averaged position signal to said modulator to compensate for landing errors of said electron beam.
Dependencies are inferred from the claim text.