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:
Aug. 07, 2012
Filed:
Sep. 18, 2008
Takeshi Kuga, Kawasaki, JP;
Shigeru Fujita, Yokohama, JP;
Hiroki Horikoshi, Komae, JP;
Akira Ichimura, Tokyo, JP;
Hideki Takemura, Tokyo, JP;
Hiroyuki Hosogoshi, Yokohama, JP;
Takeshi Kuga, Kawasaki, JP;
Shigeru Fujita, Yokohama, JP;
Hiroki Horikoshi, Komae, JP;
Akira Ichimura, Tokyo, JP;
Hideki Takemura, Tokyo, JP;
Hiroyuki Hosogoshi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electronic watermark embedding apparatus and an electronic watermark embedding method can severally deal with both of the resistance property of an electronic watermark and the prevention of image quality deterioration. Electronic watermark information of a high importance level is embedded in a component having a strong resistance property, and electronic watermark information of a low importance level is embedded in a component exerting little influence on an image quality. As a result, the electronic watermark information to be embedded in the component having a strong resistance property is limited to that of a high importance level. Moreover, the image quality deterioration can be suppressed in comparison with the case of embedding all pieces of information, and the electronic watermark information of low importance level is embedded in the component having a weak resistance property but exerting little influence on an image quality.