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:
Feb. 26, 2008
Filed:
Jun. 03, 2002
Yuuki Matsumura, Tokyo, JP;
Osamu Nakamura, Saitama, JP;
Syunichi Souma, Chiba, JP;
Takashi Kohashi, Tokyo, JP;
Yuuki Matsumura, Tokyo, JP;
Osamu Nakamura, Saitama, JP;
Syunichi Souma, Chiba, JP;
Takashi Kohashi, Tokyo, JP;
Sony Corporation, , JP;
Abstract
A digital watermark embedding device uses frame correlation to perform motion detection on an input temporally sequential video signal. Based on detected motion information, when a picture is moving at such a speed that a stationary pattern cannot be visually perceived, the device controls a digital watermark pattern to be stationary, while, when a picture is moving at such a speed that a stationary pattern can be visually perceived, the device moves the digital watermark pattern to follow the motion. This makes it possible to effectively superimpose a digital watermark pattern on the input video signal.