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. 03, 2002
Yuuki Matsumura, Tokyo, JP;
Osamu Nakamura, Saitama, JP;
Shunichi Soma, Chiba, JP;
Takashi Kohashi, Tokyo, JP;
Yuuki Matsumura, Tokyo, JP;
Osamu Nakamura, Saitama, JP;
Shunichi Soma, Chiba, JP;
Takashi Kohashi, Tokyo, JP;
Sony Corporation, , JP;
Abstract
A digital watermark embedding device and method uses block correlation to perform motion detection on temporally sequential digital video signals after performing preprocessing such as division into blocks. The device and method evaluate a plurality of motion information which are calculated for blocks by using a technique such as determination by majority or weighting. Based on the detected motion information, by moving a digital watermark pattern to follow a picture, the digital watermark information can be superimposed on an input digital video signal so as to match human visual characteristics by using a technique such as emphasizing a portion on which the human eye is easily turned.