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:
Feb. 19, 2013
Filed:
Jul. 31, 2012
Applicants:
En-hui Yang, Petersburg, CA;
Jianfen Zeng, Guangzhou, CN;
Inventors:
En-hui Yang, Petersburg, CA;
Jianfen Zeng, Guangzhou, CN;
Assignee:
SlipStream Data Inc., Waterloo, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to the compression of color image data. A combination of hard decision pixel mapping and soft decision pixel mapping is used to jointly address both quantization distortion and compression rate while maintaining low computational complexity and compatibility with standard decoders, such as, for example, the GIF/PNG decoder.