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. 20, 2016
Filed:
Mar. 15, 2013
Panasonic Corporation, Osaka, JP;
Toshihisa Nakano, Osaka, JP;
Takahiro Yamaguchi, Osaka, JP;
Masataka Minami, Tokyo, JP;
Masayuki Kozuka, Osaka, JP;
PANASONIC CORPORATION, Osaka, JP;
Abstract
A server device () includes a first generation unit () generating binding information binding a user with content, a second acquisition unit () acquiring a usage rule, a second generation unit () generating a converted title key from a title key by using the binding information and the usage rule, and an output unit () outputting content encrypted using the title key, the converted title key and the usage rule to the storage medium (). A playback device () includes a generation unit () performing the reverse of the conversion on the converted title key of the storage medium () to generate a decrypted title key, by using the binding information received from the server device () and the usage rule of the storage medium (), and a decryption unit () decrypting the encrypted content of the storage medium () by using the title key.