Digital vertical beam landing correction circuit

Details Digital vertical beam landing correction circuit Digital vertical beam landing correction circuit

1984-11-29

1986-10-28

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315368, H01J 2956

Patent

active

046201360

ABSTRACT:
Circuitry corrects vertical beam landing errors for color cathode ray tubes. A digital delay circuit provides horizontal scan line video pixel information at its proper location to produce a distortion corrected raster. Accurate correction is provided by a combination of scan line offset between the input and output video signals and by sample interpolation techniques that effectively form derived pixels that have an apparent location of the derived pixel relative to the sample video pixels is determined by the selection of the interpolating coefficients.

REFERENCES:
patent: 4385259 (1983-05-01), Chase et al.
patent: 4401922 (1983-08-01), Kamata et al.
patent: 4422019 (1983-12-01), Meyer

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