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:
Sep. 07, 2004
Filed:
Oct. 18, 2000
Hiroyuki Ishikawa, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A high-speed motion retrieval device is provided that certainly unerring motion vector at high speed. The first-stage motion retrieval means retrieves a retrieval range determined by referring to the retrieval result in the previous frame. If a minimum predictive error is smaller than a threshold value, the motion retrieval process is ended at the time the retrieval range has been retrieved. If the minimum predictive error is larger than the threshold value, the second-stage motion retrieval means retrieves the region which has not been retrieved through the first-stage motion retrieval within a predetermined retrieval range, thus obtaining the location with a minimum predictive error. Thus, the retrieval is divided into two steps. Motion vectors can be retrieved with small error detection and at high speed by suitably changing the first-stage retrieval range.