EP 1839307 A4 20100127 - RECORDING MEDIUM, APPARATUS FOR DECRYPTING DATA AND METHOD THEREOF
Title (en)
RECORDING MEDIUM, APPARATUS FOR DECRYPTING DATA AND METHOD THEREOF
Title (de)
AUFZEICHNUNGSMEDIUM, VORRICHTUNG ZUR DATENENTSCHLÜSSELUNG UND VERFAHREN DAFÜR
Title (fr)
SUPPORT D'ENREGISTREMENT, APPAREIL DE DECHIFFREMENT DE DONNEES ET PROCEDE ASSOCIE
Publication
Application
Priority
- KR 2006000031 W 20060104
- US 64458805 P 20050119
- KR 20050109694 A 20051116
Abstract (en)
[origin: WO2006078100A2] A recording medium, apparatus for decrypting data and method thereof are disclosed. The present invention includes downloading encrypted data associated with a recording medium to a local storage, decrypting data recorded in the recording medium using a first type key within a key file stored in the recording medium and decrypting the downloaded data using a second type key within one of the key file stored in the recording medium or a key file stored in the local storage. And, the present invention includes downloading the data encrypted with a key associated with a recording medium to a local storage, reading out a decryption key using link information between the data and the key, and decrypting the data using the decryption key. Accordingly, by the present invention, unauthorized copy, redistribution and the like of contents can be prevented. Hence contents can be safely provided and data can be efficiently reproduced, whereby more convenient functions can be provided to a user.
IPC 8 full level
G11B 20/00 (2006.01); G06F 21/10 (2013.01); G11B 27/10 (2006.01); G11B 27/32 (2006.01)
CPC (source: EP US)
G06F 21/10 (2013.01 - EP US); G11B 20/00086 (2013.01 - EP); G11B 20/0021 (2013.01 - EP); G11B 20/00224 (2013.01 - EP); G11B 20/00246 (2013.01 - EP); G11B 20/00253 (2013.01 - EP); G11B 20/00528 (2013.01 - EP); G11B 20/00536 (2013.01 - EP); G11B 20/00695 (2013.01 - EP); G11B 27/105 (2013.01 - EP); G11B 27/329 (2013.01 - EP); G11B 27/34 (2013.01 - EP); G11B 2020/1288 (2013.01 - EP); G11B 2220/213 (2013.01 - EP); G11B 2220/2541 (2013.01 - EP)
Citation (search report)
- [X] US 2003072453 A1 20030417 - KELLY DECLAN PATRICK [NL], et al
- [PX] WO 2005074187 A1 20050811 - SONY CORP [JP], et al & EP 1710950 A1 20061011 - SONY CORP [JP]
- [X] US 2002159592 A1 20021031 - MATSUSHIMA HIDEKI [JP], et al
- [X] WO 9611446 A2 19960418 - PHILIPS ELECTRONICS NV [NL], et al
- [A] US 2002076204 A1 20020620 - NAKANO TOSHIHISA [JP], et al
- [X] INTEL CONRPORATION: "Content Protection for Recordable Media Specification - Network Download Book", CONTENT PROTECTION FOR RECORDABLE MEDIA SPECIFICATION, XX, XX, no. REVISION 0.90, 5 August 2004 (2004-08-05), pages complete - 21, XP002379489
- [A] TAYLOR J ED - TAYLOR J: "DVD demystified, PASSAGE", DVD DEMYSTIFIED (SECOND EDITION), NEW YORK : MCGRAW-HILL, US, 1 January 2001 (2001-01-01), pages 254 - 257, XP002319697, ISBN: 978-0-07-135026-6
- [A] INTEL CORPORATION ET AL: "Advanced Access Content System (AACS). Technical Overview (informative)", INTERNET CITATION, 21 July 2004 (2004-07-21), pages 32pp, XP007910652, Retrieved from the Internet <URL:http://www.aacsla.com/marketplace/evaluating/aacs_technical_overview_ 040721.pdf> [retrieved on 20090316]
- [A] BLU-RAY DISC FOUNDERS: "White paper Blu-ray Disc Format 2. A logical and audio visual application format specifications for BD-RE", INTERNET CITATION, August 2004 (2004-08-01), XP002480404, Retrieved from the Internet <URL:http://wwww.hi-def.ru/file_download/5> [retrieved on 20080515]
- See references of WO 2006078100A2
Citation (examination)
EP 1538621 A1 20050608 - SONY CORP [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006078100 A2 20060727; WO 2006078100 A3 20061123; EP 1839307 A2 20071003; EP 1839307 A4 20100127
DOCDB simple family (application)
KR 2006000031 W 20060104; EP 06700313 A 20060104