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. 25, 2011
Filed:
Aug. 25, 2006
Masaaki Matsuoka, Yokohama, JP;
Masato Kosugi, Yokohama, JP;
Yuuichirou Kimijima, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image capturing apparatusfirst executes JPEG encoding on RAW data. On the basis of the compression ratio of JPEG image data obtained, the image capturing apparatusselects a Huffman table to encode the RAW data. With the higher compression ratio of the JPEG data obtained, the image capturing apparatusassumes that the RAW data is image data with a larger number of low frequency components. The image capturing apparatusthus selects a Huffman table that assigns a particularly short code to a predictive differential value with a smaller absolute value. In contrast, with the lower compression ratio of the JPEG image data obtained, the image capturing apparatusselects a Huffman table that assigns a code of a relatively equal length to the predictive differential value regardless of its absolute value.