Color image reading apparatus and method

Details Color image reading apparatus and method Color image reading apparatus and method

1996-06-14

1998-07-14

Coles, Edward L.

Facsimile and static presentation processing

Natural color facsimile

Scanning

358443, 358446, 358448, 358474, 358496, 358494, 358512, 358515, 358518, H04N 140, H04N 104, H04N 146

Patent

active

057813140

ABSTRACT:
A color image reading apparatus improves the reproducibility of colors at the black level end of the brightness scale of each of component color images of an original medium. The color image reading apparatus includes an illuminating unit that illuminates the original medium such as a film original, an imaging device that forms images of the original medium based on three component colors of red, green and blue and outputs a red color signal, a green color signal and a blue color signal, a gain controlled amplifying device that amplifies each of the component color signals output from the imaging device and a gain setting device that sets a common, adjustable gain for each of the component color signals using the single amplifying device.

REFERENCES:
patent: 3922714 (1975-11-01), Delavie
patent: 4136360 (1979-01-01), Hoffrichter et al.
patent: 4893180 (1990-01-01), Shigaki et al.
patent: 4942462 (1990-07-01), Shiota
patent: 4942727 (1990-07-01), Imaide et al.
patent: 4959727 (1990-09-01), Imaide et al.
patent: 5191406 (1993-03-01), Brandestini et al.
patent: 5424537 (1995-06-01), Lehman et al.
patent: 5438364 (1995-08-01), Maeshima et al.
patent: 5453798 (1995-09-01), White et al.
patent: 5495361 (1996-02-01), Cresens
patent: 5596427 (1997-01-01), Honma et al.

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