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. 22, 2012
Filed:
Jun. 05, 2008
Applicants:
Takehisa Kato, Fuchu, JP;
Koji Okada, Tokyo, JP;
Norikazu Hosaka, Fuchu, JP;
Yoshihiro Fujii, Fuchu, JP;
Minako Tada, Komae, JP;
Inventors:
Takehisa Kato, Fuchu, JP;
Koji Okada, Tokyo, JP;
Norikazu Hosaka, Fuchu, JP;
Yoshihiro Fujii, Fuchu, JP;
Minako Tada, Komae, JP;
Assignees:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Solutions Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A content distribution/browsing system is disclosed. First to (m−1)th encrypted content items E(K, C∥K), . . . , E(K, C∥K) contain second to m-th (next in order) sharing keys K, . . . , K, respectively. When desirous of browsing an (i+1)th content item C, the (i+1)th sharing key Kis acquired by browsing an immediately preceding i-th content item C.