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. 14, 1999
Filed:
Mar. 13, 1998
Matsushita Graphic Communication Systems, Inc., Tokyo, JP;
Abstract
The image scaling processing device distinguishes whether an original image data is a character image or a half-tone image per a pixel unit in the image domain separating portion and scales each image in the character scaling processing portion and the half-tone scaling processing portion. In order to get a desired scale factor L times image data, the character scaling processing is performed by the first scaling processing for enlarging an image data by 2.sup.n times (n is an integer, L<2.sup.n) in each sub scanning direction and main scanning direction and by the second scaling processing for reducing by L/2.sup.n times the image data enlarged by 2.sup.n times and the half-tone scaling processing is made by the first scaling processing for enlarging an image data by 2.sup.n times (n is an integer, L>2.sup.n) in each sub scanning direction and main scanning direction and by the second scaling processing for enlarging by L/2.sup.n times the image data enlarged by 2.sup.n times.