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:
Sep. 05, 2000
Filed:
Sep. 19, 1995
Applicant:
Inventor:
Hideo Kumashiro, Fukuyama, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382273 ; 358455 ; 358466 ;
Abstract
Digital image data read in by an image scanner is added with a binary error calculated by a peripheral error weighting filter in an error adder to correct binary error. The corrected data is compared with a predetermined threshold value T.sub.0 by a comparator provide output as binary data. A binary error calculation unit calculates a binary error according to the output binary data and error correction data, which is fed back to the digital image data. A variable base value calculation unit for providing to the binary error calculation unit a base value to calculate calculation error and a maximum value/minimum value detection unit are provided outside the feedback loop.