Patent ID: 6028681
Filing Date: 2000-02-22
Classification: H04N

Abstract:
A light processing system, comprising:a carriage having a housing for supporting therein an illumination source to facilitate illuminating a document to be scanned, said housing including a light monitor window for directing light along a document interception path to a desired document scan area of a document to be scanned;a light monitor window tab mounted to said housing and partially within said light monitor window for scattering reflected light along a desired light feedback control path;said document scan area reflecting light along a document image path, wherein the light reflecting along said document image path varies in intensity relative to the light directed along said document interception path; anda light compensating system for converting the light reflected along said light feedback control path into a control signal that facilitates signal gain adjustments to compensate for variations in light intensity directed along said document interception path and for converting said light reflecting along said document image path into a plurality of digital signals that facilitate the formation of an image indicative of indicia information disposed on said document.