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. 10, 2012
Filed:
May. 28, 2007
Kazuo Sugimoto, Tokyo, JP;
Ryousuke Fujii, Tokyo, JP;
Hiroshi Ito, Tokyo, JP;
Mitsuyoshi Suzuki, Tokyo, JP;
Kazuo Sugimoto, Tokyo, JP;
Ryousuke Fujii, Tokyo, JP;
Hiroshi Ito, Tokyo, JP;
Mitsuyoshi Suzuki, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A digital watermark embedding device according to the present invention includes: a watermark pattern generation part () which generates a watermark pattern varying in a time direction based on embedding information to be embedded in an input image to be processed; a synchronization pattern generation part () which outputs a fixed pattern for detecting synchronization as a watermark pattern; a pattern switching part () which selects between the watermark pattern output by the synchronization pattern generation part () and the watermark pattern output by the watermark pattern generation part () based on the input image (); and an embedding processing part () which adds the selected watermark pattern to each pixel value of the input image () to generate an embedded image () having a digital watermark embedded therein. Consequently, phase shifting may be detected based on the fixed pattern for detecting synchronization, there by being capable of precisely detecting the digital watermark out of a recaptured image as well.