Device and method for improving scanning quality of image scanne

Details Device and method for improving scanning quality of image scanne Device and method for improving scanning quality of image scanne

1998-07-17

2000-11-07

Grant, II, Jerome

Facsimile and static presentation processing

Facsimile

Picture signal generator

358497, 358474, 382286, 382281, H04N 104

Patent

active

061444677

ABSTRACT:
An image scanner having an improved scanning quality is disclosed. Two different color blocks having an interface therebetween are provided on the document platform of the image scanner. The image pickup device passes by the color blocks prior to the document area so that color calibrations and/or error detection can be performed before the scanning operation is performed. By this way, the color data such as the brightness of the obtained image can be compensated, and the deflection rate and/or the amplification error of the image pickup device can be corrected.

REFERENCES:
patent: 4864415 (1989-09-01), Beikirch et al.
patent: 4870505 (1989-09-01), Mitsuki
patent: 4933778 (1990-06-01), Tufano et al.
patent: 5144455 (1992-09-01), Stein et al.

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