Title:
METHOD FOR LOCAL RECORDING OF TELEVISION DIGITAL DATA
Document Type and Number:
WIPO Patent Application WO2003010722
Kind Code:
A3
Abstract:
The invention concerns a method for local recording of digital data received by a transmission network, which consists in encrypting the digital data received with a local recording key (KLEA) and in locally storing the encrypted data (7). The method is characterised in that it comprises the following steps: generating a content key (CK), combining the content key (CK) and a base key (BK) to obtain the local recording key (KLEA), jointly storing the content key (CK) and the encrypted data (7) with the local recording key (KLEA). The invention is particularly applicable to local recording of digital data derived from digital television broadcasting.
Inventors:
LOISEL YANN (FR)
Application Number:
PCT/EP2002/008207
Publication Date:
April 17, 2003
Filing Date:
July 23, 2002
Export Citation:
Assignee:
SCM MICROSYSTEMS GMBH (DE)
LOISEL YANN (FR)
LOISEL YANN (FR)
International Classes:
G11B20/00; H04N5/913; H04N7/167; (IPC1-7): G11B20/00; H04N5/913
Domestic Patent References:
| WO2000022777A1 | 2000-04-20 | |||
| WO2000079368A1 | 2000-12-28 |
Foreign References:
| EP0936812A1 | 1999-08-18 | |||
| DE19923250A1 | 2000-11-23 | |||
| FR2732537A1 | 1996-10-04 | |||
| EP0912052A1 | 1999-04-28 | |||
| US5923754A | 1999-07-13 |
Download PDF: