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:
Oct. 29, 2002
Filed:
Mar. 03, 1999
Atsushi Shimizu, Tokyo, JP;
Hirohisa Jozawa, Tokyo, JP;
Kazuto Kamikura, Tokyo, JP;
Hiroshi Watanabe, Tokyo, JP;
Atsushi Sagata, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
Motion vector encoding and decoding methods, motion vector encoding and decoding apparatuses, and storage media storing motion vector encoding and decoding programs are provided, thereby reducing the amount of generated code with respect to the motion vector. First, the motion vector of a target block to be encoded is detected (step S ), and a prediction error vector is calculated (step S ). After the length component of the motion vector is calculated (step S ), the length component is variable-length-encoded (step S ). The length component is checked (step S ), and if the length component is not 0, the direction component is calculated (step S ). The table for encoding the direction component is selected according to the length component, and the direction component is encoded (step S ).