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:
Jun. 09, 2015
Filed:
Aug. 24, 2012
Hiroshi Kuno, Kanagawa, JP;
Yoshiyuki Kobayashi, Tokyo, JP;
Takamichi Hayashi, Tokyo, JP;
Katsumi Muramatsu, Tokyo, JP;
Hiroshi Kuno, Kanagawa, JP;
Yoshiyuki Kobayashi, Tokyo, JP;
Takamichi Hayashi, Tokyo, JP;
Katsumi Muramatsu, Tokyo, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
Disclosed herein is an information processing apparatus, including: a data processing section reproducing contents stored in a medium having a general purpose area storing encrypted contents and utilization controlling information corresponding to the contents, and a protected area including blocks to which access limitation is set and which include a title key storage block in which an encryption key for decrypting the contents and validity period information applied to the application contents of the encryption key are stored and a status storage block in which date information upon content first-time reproduction is stored; the data processing section acquires validity period information indicative of the content utilization permission period determined in response to date information upon the content first-time reproduction from the title key storage block and decides whether or not content reproduction is to be permitted based on comparison between the acquired validity period information and current date information.