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:
Jun. 13, 1995
Filed:
Mar. 30, 1993
Yasunori Hashimoto, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image processing apparatus for half-tone processing input image data having different resolutions by using a dither matrix consisting of a plurality of threshold values is disclosed. The apparatus includes an input device to input image data; a high-resolution dither processing unit to half-tone process the image data of a high resolution; a low-resolution dither processing unit to half-tone process the image data of a low resolution; and a selector to select either one of the two processing units in accordance with the resolution of the input image data. The input device includes a reader to read an original image and generate image data and a resolution conversion processing unit to convert the resolution of the image data obtained by the reader. The high-resolution processing unit uses a spiral-type dither matrix. The low-resolution processing unit uses a dither matrix including a plurality of small spiral-type dither matrices. The input images of different resolutions can be accurately reproduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile