Content protection device and content protection method

Details Content protection device and content protection method Content protection device and content protection method

2011-07-19

2011-07-19

Moazzami, Nasser (Department: 2436)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S165000, C713S166000, C713S167000

Reexamination Certificate

active

07984296

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.

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Nakano et al., “SDconnect Digital Rights Management System Technology Using SD Memory Card,” Toshiba Review, Toshiba Corporation, Jul. 1, 2008, vol. 63, No. 7, pp. 31-34, Japan.
Notice of Reasons for Rejection mailed by Japan Patent Office on Jul. 6, 2010 in the corresponding Japanese patent application No. 2009-085881.

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