Registration error correction device

Details Registration error correction device Registration error correction device

1994-05-04

1996-04-09

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

31536813, 348806, 348807, G09G 128, H04N 322, H04N 928

Patent

active

055064817

ABSTRACT:
A device for digital convergence correction of raster distortion correction of a picture displayed on a screen of a display device using a cathode-ray tube, in which scanning lines include a first class of scanning lines, called correction scanning lines, on which correction points are positioned, and a second class of scanning lines, called interpolated scanning lines between the correction scanning lines. The correction points are positioned at intersections of the correction scanning lines and vertical lines. The correction data for the interpolated scanning lines are produced by vertical interpolation from the correction data of a certain number of vertically aligned correction points. Convergence adjustment, however, may be conducted for only part of the correction points, and the correction data of the remaining correction points may be obtained by interpolation.

REFERENCES:
patent: 4422019 (1983-12-01), Meyer
patent: 5194783 (1993-03-01), Ogino et al.
patent: 5274307 (1993-12-01), Christensen
patent: 5382984 (1995-01-01), Tsujihara et al.

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