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. 20, 2001
Hideyuki Hirano, Kawasaki, JP;
Shinji Hashimoto, Kawasaki, JP;
Eiki Hattori, Shizuoka, JP;
Shigetoshi Mochizuki, Shizuoka, JP;
Hideyuki Hirano, Kawasaki, JP;
Shinji Hashimoto, Kawasaki, JP;
Eiki Hattori, Shizuoka, JP;
Shigetoshi Mochizuki, Shizuoka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
Data administration method which prevents the infringement of a copyright by encrypting and distributing digital content, and readily grasps which contents are contained in the digital content included in the data. Preparing symbol information symbolized so as to visually and auditorily recognize the contents of the digital content that conduct distribution (Step S), embedding the symbol information in a header data section (Step S), encrypting the digital content (Step S), embedding consent information including the information on the contents key in the header data section as an electronic watermark (Step S), and compositing the real data section and the consent-information-added header data section and distributing the composite data (Step S).