Image scanning device having a linear image sensor and a scannin

Details Image scanning device having a linear image sensor and a scannin Image scanning device having a linear image sensor and a scannin

1997-06-19

1999-12-07

Lee, Thomas D.

Facsimile and static presentation processing

Natural color facsimile

Scanning

H04N 156

Patent

active

059992786

ABSTRACT:
An image scanning device is provided that includes: an imaging lens; a linear image sensor; a rotating scanning system; and a shading correction system that corrects each pixel image signal for shading in accordance with image height and a magnification of the imaging lens. The magnification of the imaging lens changes according to the rotational position of the scanning system. The image scanning device may further include a color filter and a color correction system for correcting the pixel image signals for changes of wavelength transmittance of the color filter in accordance with image height and the magnification of the imaging lens.

REFERENCES:
patent: 5012089 (1991-04-01), Kurusu et al.
patent: 5263698 (1993-11-01), Higuchi et al.
patent: 5541740 (1996-07-01), Mori
patent: 5581377 (1996-12-01), Shimizu et al.

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