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:
Oct. 08, 2002
Filed:
Mar. 24, 1999
Applicant:
Inventors:
Katsuyuki Hirata, Aichi-Ken, JP;
Kentaro Katori, Toyokawa, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/407 ; H04N 1/50 ; G06K 1/502 ;
U.S. Cl.
CPC ...
H04N 1/407 ; H04N 1/50 ; G06K 1/502 ;
Abstract
A method of and apparatus for forming an image adapted to apply an error diffusion method to an input image data having N gradations so as to convert it into an output image data having M gradations, where M<N. Correspondence between N-stage gradation levels of the input image data and M-stage gradation levels of the output image data can be varied. This apparatus for forming an image has control means for setting the aforesaid correspondence in accordance with data obtained from the measurement of the image densities of a printout having specific gradation levels which do not give rise to errors in the aforesaid conversion.