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:
Dec. 16, 1997
Filed:
Dec. 07, 1993
Seiichiro Morikawa, Kanagawa-ken, JP;
Fuji Photo Film Co. Ltd., Kanagawa, JP;
Abstract
To produce a correction table to be referred to when a quantum level data (QL data) as an input image data to a given image output device is converted into an image having a halftone dot percentage, reference QL data having a plurality of data values arranged at predetermined data intervals are inputted to the image output device; the halftone dot percentage of an output image from the image output device are measured; an approximation formula of a desired function form is determined to approximate the measured halftone dot percentage by the method of least squares, on the condition that the formula should go through preset starting and ending points; and the correction table is produced based on the resulted approximation formula.