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:
Nov. 18, 2003
Filed:
Aug. 28, 2002
Taro Yokose, Ashigarakami-gun, JP;
Ikken So, Ashigarakami-gun, JP;
Shunichi Kimura, Ashigarakami-gun, JP;
Yutaka Koshi, Ashigarakami-gun, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An input image is subjected to transform by a DCT transforming unit A coefficient analyzing unit compares a predetermined coefficient and coefficient data and obtains low-frequency image data of the input image by a high-frequency coefficient masking unit and an inverse DCT unit on the basis of a result of that comparison. A pixel subsampling unit receives this low-frequency image data and generates a subsampled image on the basis of the aforementioned result of comparison. The subsampled image and coefficient information are transmitted to a decoding side. A decoding apparatus decodes an image on the basis of the subsampled image and the coefficient information.