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:
Mar. 20, 2012
Filed:
Dec. 20, 2004
Kaoru Yokota, Ashiya, JP;
Motoji Ohmori, Hirakata, JP;
Koichi Morioka, Katano, JP;
Hideshi Ishihara, Katano, JP;
Makoto Tatebayashi, Takarazuka, JP;
Kaoru Yokota, Ashiya, JP;
Motoji Ohmori, Hirakata, JP;
Koichi Morioka, Katano, JP;
Hideshi Ishihara, Katano, JP;
Makoto Tatebayashi, Takarazuka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A content reproduction apparatus () which reproduces digital contents, and includes a device key storage unit () holding a device key () specific to the content reproduction apparatus () in a manner that does not allow access from outside the content reproduction apparatus (). The content reproduction apparatus (), also includes a device ID storage unit () holding device key index information () that is in a one-to-one association with a device key (), an instruction code receiving unit () receiving an instruction code to output index information, a device key index information obtainment processing unit () outputting, to outside, the device key index information () stored in the device ID storage unit () based on the instruction, and a device key index information output processing unit ().