Global Patent Index - EP 1839307 A2

EP 1839307 A2 2007-10-03 - 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

EP 1839307 A2 (EN)

Application

EP 06700313 A

Priority

  • KR 2006000031 W
  • US 64458805 P
  • KR 20050109694 A

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 (invention and additional information)

G11B 20/00 (2006.01); G06F 21/10 (2013.01); G11B 27/10 (2006.01); G11B 27/32 (2006.01)

CPC (invention and additional information)

G11B 20/0021 (2013.01); G06F 21/10 (2013.01); G11B 20/00086 (2013.01); G11B 20/00224 (2013.01); G11B 20/00246 (2013.01); G11B 20/00253 (2013.01); G11B 20/00528 (2013.01); G11B 20/00536 (2013.01); G11B 20/00695 (2013.01); G11B 27/105 (2013.01); G11B 27/329 (2013.01); G11B 27/34 (2013.01); G11B 2020/1288 (2013.01); G11B 2220/213 (2013.01); G11B 2220/2541 (2013.01)

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

EPO simple patent family

WO 2006078100 A2 20060727; WO 2006078100 A3 20061123; EP 1839307 A2 20071003; EP 1839307 A4 20100127

INPADOC legal status


2015-03-04 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20140924

2014-06-11 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20140513

2010-01-27 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20091229

2010-01-27 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G11B 20/00 20060101AFI20091221BHEP

2010-01-27 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G11B 27/32 20060101ALI20091221BHEP

2010-01-27 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G11B 27/10 20060101ALI20091221BHEP

2010-01-27 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G06F 21/00 20060101ALI20091221BHEP

2008-04-23 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2007-10-03 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20070801

2007-10-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): 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