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:
Apr. 29, 1997
Filed:
Jun. 05, 1995
Applicant:
Inventors:
Yukio Kaji, Kanazawa, JP;
Toshiki Nakajima, Hakui-gun, JP;
Assignees:
PFU Limited, Ishikawa, JP;
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382274 ; 382319 ; 358406 ;
Abstract
The present invention provides a white level setting system for an image scanner. The system compares an analog image signal obtained by scanning an original or a white reference with a predetermined analog white level signal, to provide a digital image signal corresponding to an image on the original, calculates a white level for the next scan line according to the digital image signal, and employs the white level for the next scan line.