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. 23, 2003
Filed:
Sep. 20, 1999
Applicant:
Inventors:
Seiji Ohshima, Itami, JP;
Toshitsugu Yamamoto, Takatsuki, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/38 ;
U.S. Cl.
CPC ...
G06K 9/38 ;
Abstract
An image forming apparatus capable of solving problems in error diffusion method is provided. An input pixel value is thresholded using a corrected threshold value Th (x), and a binarized pixel value is output. The corrected threshold value Th (x) is subtracted from the output value, multiplied by a feed back coefficient &bgr;, and thereafter, the result is diffused to threshold values of pixels around the pixel of interest.