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. 03, 2009
Filed:
Dec. 07, 2004
Applicant:
Yusuke Mizuno, Osaka, JP;
Inventor:
Yusuke Mizuno, Osaka, JP;
Assignee:
Mega Chips LSI Solutions Inc., Osaka-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
A DWT unit applies wavelet transform to an input signal to output transform coefficients, and a quantization unit quantizes those transform coefficients with a quantization step size determined according to target image quality. Then, a rate control unit controls the rate of coded data according to information on the quantization step size. Also, an image-quality control unit controls the rate of only part of coded data which is determined from a priority table. This achieves a compression encoder which operates at high speed with minimal operations.