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:
Jan. 05, 2010
Filed:
May. 06, 2005
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 is performed by a secure container including a content encrypted by a content key and container information set for a content transaction. The container information includes a person identification certificate identifiers list. Usage control status information including the list is generated and stored in a device during a secondary distribution among user devices after a primary distribution of the content. In the distribution among the user devices, identifying an identification certificate in reference to the list and performing a person authentication based on the identification certificate allows each of the user devices to use the transmitted content, when the authentication is affirmative.