SCANNER WITH REAL-TIME CALIBRATION
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United States of America Patent
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Issued Date -
Jun 30, 2011
app pub date -
Dec 7, 2010
filing date -
Dec 25, 2009
priority date (Note) -
Abandoned
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Abstract
A scanner includes a reference backing member, a scanning module, a transmission mechanism and a processing module. The scanning module scans the reference backing member and an original including first and second documents. The transmission mechanism moves one of the original and the scanning module relatively to the other. The scanning module scans the reference backing member and the original and successively obtains a first reference image signal representative of an image of the reference backing member, a first image signal representative of an image of the first document, a second reference image signal representative of the image of the reference backing member and a second image signal representative of an image of the second document. The processing module, coupled to the scanning module, compensates the first and second image signals according to the first and second reference image signals, respectively, to obtain first and second resulting signals.
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