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:
Dec. 18, 2007
Filed:
Aug. 30, 2001
Shinako Matsuyama, Tokyo, JP;
Yoshihito Ishibashi, Tokyo, JP;
Ichiro Futamura, Kanagawa, JP;
Masashi Kon, Kanagawa, JP;
Hideaki Watanabe, Tokyo, JP;
Shinako Matsuyama, Tokyo, JP;
Yoshihito Ishibashi, Tokyo, JP;
Ichiro Futamura, Kanagawa, JP;
Masashi Kon, Kanagawa, JP;
Hideaki Watanabe, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A content distribution system allowing user authentication to be performed to identify a user in content transaction, thereby permitting the content to be used. The content is distributed with a secure container. The secure container includes the content enciphered with a content key and container information in which the content transaction condition is set. The container information includes an identification certificate identifier list. An identification certificate contains a template serving as personal identification data of a user who is to receive the content and it is identified in accordance with the list. A service provider, a user device, or the like authenticates the user in accordance with the identified certificate, and then permits the content to be used.