Television – Video display – Projection device
Patent
1994-04-26
1995-12-05
Groody, James J.
Television
Video display
Projection device
348778, 348806, 31536824, H04N 323
Patent
active
054733910
ABSTRACT:
A projection-type image display apparatus, in which a correction raster shape correction circuit is supplied with a sawtoothed-shaped voltage changing in level in accordance with a static convergence regulation voltage for correcting respective raster shapes displayed on the respective picture planes of a plurality of cathode-ray tubes, so that the convergence is not displaced at the peripheral portions of the picture screen at the time of regulating the static convergence.
REFERENCES:
patent: 4961030 (1990-10-01), Ogino
patent: 5164639 (1992-11-01), Shimaoka
Groody James J.
Hsia Sherrie
Mitsubishi Denki & Kabushiki Kaisha
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