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:
Jul. 31, 2012
Filed:
Apr. 18, 2006
Kyoko Fukuda, Kanagawa, JP;
Yutaka Yoneda, Kanagawa, JP;
Masatsugu Fukunaga, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
Image data are compressed such that they do not visually deteriorate. Nonlinear compression and DPCM compression are performed in series. A compressing unitthat uses nonlinear transform inputs image data (L bits per pixel) of each color component. Image data are compressed to M bits (M<L) according to a compression transform tale TBthat has been set up according to image information extracted from original image data. The compressing unitperforms compression transform having a characteristic similar to a gamma curve characteristic used in a gamma correction disposed downstream of the compressing unit. Image data compressed and transformed to M bits by the nonlinear compressing unitare input to a DPCM compressing unit. The DPCM compressing unitfinally compresses input data to N bits (for example, N=10) according to a quantization table TB. The compressed image data are stored to an image memory through a packing section