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:
Oct. 14, 2014
Filed:
Jul. 26, 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
An information processing apparatus, including: a data processing section reproducing contents stored in a medium having a general purpose area in which encrypted contents and utilization controlling information corresponding to the contents are stored, and a protected area configured from a plurality of blocks to which access limitation is set and which include a block in which an encryption key for decrypting the contents and information of a plurality of validity periods indicative of content utilization permission periods applied to the application contents of the encryption key are stored, wherein the data processing section acquires the utilization controlling information of a reproduction object content, extracts selection information of validity period information to be applied to the content, and decides whether or not content reproduction is to be permitted by comparison between the validity period information selected from within the block and current date information in accordance with the selection information.