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Browse Prior Art Database

BROAD CONTEXT BACKGROUND DETECTOR

IP.com Disclosure Number: IPCOM000025189D
Original Publication Date: 1983-Dec-31
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

Referring to the drawings, an electronic page scanning system is shown with the document page 3 at object area or platen 4 imaged through a lens 5 onto either a raster imager or an area imager 6. At startup of the system, calibration for gain and offset is carried out by placing a known calibration target in the object area 4.