System for overall color correction of color picture information

Details System for overall color correction of color picture information System for overall color correction of color picture information

1978-02-10

1980-10-28

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

354103, 355 46, 355 77, G03B 2772, G03B 2776

Patent

active

042304083

ABSTRACT:
A color correction system contains a plurality of color channels which each contain a dichroic mirror and an electro-optical modulator. An unpolarized light source shining through a color transparency serves as the input to each channel, and each color is individually controlled by the electro-optical modulator in its respective channel. The colors of each channel are then recombined after correction. In another embodiment of the invention, each channel further includes mono-color film storage means as black and white film storage means to store the color image of the particular channel on such an inexpensive film for subsequent reconstruction as a picture of different color than the film color. In a further embodiment, a plurality of separate colors of the same color image are stored on spaced regions of a given frame area of a mono-color negative, especially of a black and white negative, along with verbal information which is to be projected with the corresponding color image.

REFERENCES:
patent: 2273112 (1942-02-01), Kleinhenz
patent: 2491018 (1949-12-01), Thomas
patent: 3459888 (1969-08-01), Sokolov
patent: 3488190 (1970-01-01), Smith
patent: 3495518 (1970-02-01), Takagi et al.
patent: 3580151 (1971-05-01), Hudson et al.
patent: 3589811 (1971-06-01), Berger
patent: 3796487 (1974-03-01), Voorhees

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