The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2001
Filed:
Jul. 15, 1998
Adolf T. R. Hsu, Yunlin Hsien, TW;
Ching-Chih Fan, Hsinchu, TW;
Mustek Systems, Inc., Hsinchu, TW;
Abstract
A method adapted for distinguishing an object scanned by a transmissive/reflective scanning device for as a transmissive object or a reflective object. The scanning device includes a transmitting light source and a reflecting light source. The method includes the steps of (a) turning on one of the light sources, (b) scanning a first portion of the object to obtain a first image signal by using the light source turned on int the step (a), (c) calculating a first scanning value of the first image signal, (d) turning off the first light source turned on in the step (a) and turing on the other light source, (e) scanning a second portion of the object to obtain a second image signal by using the light source turned on in the step (d), (f) calculating a second scanning value of the second image signal, and (g) comparing the scanning values to distinguish the object to be one of the transmissive object and the reflective object.