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:
Jul. 10, 2018
Filed:
Jun. 02, 2011
Kenjiro Ueda, Kanagawa, JP;
Koji Yoshimura, Kanagawa, JP;
Hiroshi Kuno, Kanagawa, JP;
Takamichi Hayashi, Tokyo, JP;
Munetake Ebihara, Kanagawa, JP;
Kenjiro Ueda, Kanagawa, JP;
Koji Yoshimura, Kanagawa, JP;
Hiroshi Kuno, Kanagawa, JP;
Takamichi Hayashi, Tokyo, JP;
Munetake Ebihara, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An information processing device includes: a data processing unit that executes a process of reproducing content recorded in a medium; and a memory storing a content revocation list in which an identifier (ID) of revoked content is recorded, wherein the data processing unit compares a minimum allowable version of a content revocation list recorded in a token which is management data corresponding to content recorded in the medium with a version of a content revocation list acquired from the memory, and when the version of the content revocation list acquired from the memory is an old version lower than the minimum allowable version of the content revocation list recorded in the token, the data processing unit halts determination on revocation of content based on the content revocation list acquired from the memory and reproduction of content.