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:
Apr. 22, 2008
Filed:
Nov. 10, 2004
Takahiro Fukuhara, Kanagawa, JP;
Junya Araki, Tokyo, JP;
Takahiro Fukuhara, Kanagawa, JP;
Junya Araki, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
In a color converter unit of an image encoding apparatus, a subtractor unit subtracts Y from Z and a divider unit divides the result of this subtraction (Z−Y) by 2 and supplies the result to a component signal Yto an image coding unit. Another subtractor unit subtracts Y from X and another divider unit divides the result of this subtraction (X−Y) by 2 and supplies the result as a component signal Yto the image coding unit. Y remains unprocessed and is supplied as a component signal Yto the image coding unit. The image coding unit compression-codes the converted three component signals Y, Y, Yaccording to the JPEG-2000 system to generate an encoded code stream. Thus, an image in the XYZ color space is compressed and expanded highly efficiently.