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:
May. 16, 2006
Filed:
Mar. 06, 2001
Isao Echizen, Yokohama, JP;
Hiroshi Yoshiura, Tokyo, JP;
Ryoichi Sasaki, Fujisawa, JP;
Shinichiro Harano, Yokohama, JP;
Shinobu Eikawa, Yamato, JP;
Isao Echizen, Yokohama, JP;
Hiroshi Yoshiura, Tokyo, JP;
Ryoichi Sasaki, Fujisawa, JP;
Shinichiro Harano, Yokohama, JP;
Shinobu Eikawa, Yamato, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To lighten the processing load of embedding a digital watermark in content data, a preliminary process (embedding strength map generating process) run by a preprocessing section and the main process (digital watermark embedding process) run by a man processing section are run mutually independently. Specifically, the preliminary process of the preprocessing section is run each time new content data is stored to the content data database, and the main process of the main processing section is run when a content delivery request is received from a receiving terminal (client).