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:
Jul. 09, 2002
Filed:
Nov. 29, 2000
Yutaka Tourai, Toyohashi, JP;
Masahiro Shiigi, Toyokawa, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
In a thermal printer, the print mode that has been set by the user is judged at the start of printing. When the high-speed print mode is set, the standard deviation &sgr; of the original image data is calculated. According to the standard deviation &sgr;, it is judged whether the densities are evenly distributed. When the densities are evenly distributed, a gradation conversion characteristic is selected for converting the gradation in the entire density range only by decreasing the number of gradation levels of the output image. When the densities are intensively concentrated in a specific density range, it is further judged whether the specific density range is the low, middle, or high density range. According to the judgement, the gradation values of input data are converted using a gradation conversion characteristic for decreasing the number of gradation levels of the output image and accurately reproducing the gradation in the specific density range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile