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. 19, 2011
Filed:
Mar. 31, 2010
Keiko Watanabe, Fuchu, JP;
Jun Sato, Kokubunji, JP;
Keiko Watanabe, Fuchu, JP;
Jun Sato, Kokubunji, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a content protection device includes a writing module configured to write protection information into file management information item in order to protect a content which is specified to be protected, wherein the writing module is configured to write the protection information corresponding to sectors which stores content key management information file includes content key link information item includes content key position information item of encrypted content key corresponding to content which is specified to be protected, or to write protection information corresponding to at least part of a sectors which stores content key management file includes encrypted content key corresponding to content which is specified to be protected.