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:
Mar. 29, 2011
Filed:
Sep. 14, 2007
Tadayoshi Nakayama, Tokyo, JP;
Tadayoshi Nakayama, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A lossless encoding processing unit lossless-encodes respective tiles, and stores the encoded data in a memory. A determination unit determines, according to attribute information of each tile, whether the tile of interest is to be lossless- or lossy-encoded, and appends the determination result at the head of lossless-encoded data as a flag. The determination unit counts, in variable CH, the number of tiles determined to be lossy-encoded, during the lossless encoding processing. Every time the CH exceeds one of a plurality of different thresholds, a lossy encoding processing unit decodes lossless-encoded data appended with a lossy flag, applies processing for decreasing the resolution to the decoded data, lossless-encodes the data that has undergone the processing again, and stores the lossless-encoded data in the memory. Upon completion of the lossless encoding processing for one page, the lossy encoding processing unit lossy-encodes the lossless-encoded data appended with the lossy flag.