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:
Jun. 14, 2005
Filed:
Nov. 08, 2001
Feng Wu, Beijing, CN;
Shipeng LI, Irvine, CA (US);
Ya-qin Zhang, West Windsor, NJ (US);
Bing Zeng, Beijing, CN;
Xiaoyan Sun, Beijing, CN;
Feng Wu, Beijing, CN;
Shipeng Li, Irvine, CA (US);
Ya-Qin Zhang, West Windsor, NJ (US);
Bing Zeng, Beijing, CN;
Xiaoyan Sun, Beijing, CN;
Microsoft Corporation, Redmond, WA (US);
Abstract
A motion-compensated video encoding scheme employs progressive fine-granularity layered coding to encode macroblocks of video data into frames having multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. Some of the enhancement layers in a current frame are predicted from different quality layers in reference frames. The video encoding scheme estimates drifting errors during the encoding and chooses a coding mode for each macroblock in the enhancement layer to maximize high coding efficiency while minimizing drifting errors.