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. 05, 1993
Filed:
Mar. 11, 1992
Hisaharu Kato, Tokyo, JP;
Toshiaki Endo, Tokyo, JP;
Kokusai Denshin Denwa Co., Ltd., Tokyo, JP;
Abstract
A multi-level image is encoded through dither conversion and hierarchy encoding with high image compression ratio and satisfactory image quality for low resolution images. An original multi-level image is first reduced so that a plurality of reduced images are obtained. Each reduced multi-layer image is then dithered to bi-level image, and finally each dithered bi-level image is encoded starting the smallest and the lowest resolution image to the largest and the highest resolution image. No temporary memory for reduced multi-level image is necessary, as a common multi-level line memory (LM2, LM3, LM4) doubles for storing a reduced multi-level image and a temporary memory for effecting dither conversion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile