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. 21, 2009
Filed:
Jun. 04, 2008
Yun He, Shenzhen, CN;
Ping Yang, Shenzhen, CN;
Wei Yu, Shenzhen, CN;
Xinjian Meng, Shenzhen, CN;
Jianhua Zheng, Shenzhen, CN;
Yun He, Shenzhen, CN;
Ping Yang, Shenzhen, CN;
Wei Yu, Shenzhen, CN;
Xinjian Meng, Shenzhen, CN;
Jianhua Zheng, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Tsinghua University, Beijing, CN;
Abstract
A binary coding and decoding method and apparatus for MVD (Motion Vector Difference) absolute values, includes: dividing symbols for MVD absolute values to be coded into a plurality of subsets according to probability distribution properties; assigning a binary codeword for each subset; assigning a binary codeword for each symbol in each subset; concatenating and outputting the binary codeword for each subset and the binary codeword for each symbol in the subset, as the binary coding result. At the decoding side, decoding operations are performed by using a principle corresponding to that at the coding side. In this manner, the invention makes full use of the source properties on one hand, and effectively prevents the codeword length from being too long on the other hand. It has been experimentally testified that a better compression effect may be achieved during arithmetic coding process and thus the image coding performance may be improved effectively.