EP 1081884 A3 20051102 - Method for transmitting encrypted data via a broadcast network, where the decryption data is obtained through a bidirectional communication link
Title (en)
Method for transmitting encrypted data via a broadcast network, where the decryption data is obtained through a bidirectional communication link
Title (de)
Verfahren zur Übertragung von verschlüsselten Daten über ein Rundfunknetz, wobei die Entschlüsselungsdaten über eine Duplex-Fernmeldeverbindung angefordert werden
Title (fr)
Méthode pour la transmission de données cryptées à travers un réseau de radiodiffusion, où la clé de décryptage est obtenue à travers une liaison de communication bidirectionnelle
Publication
Application
Priority
DE 19941929 A 19990903
Abstract (en)
[origin: EP1081884A2] The method involves the user requesting decoding data with a duplex transmission method, esp. a mobile radio or telephone connection by selecting a data service provider, the provider transmitting decoding data to the user via the duplex transmission method and the user decoding the encoded data using the decoding data.
IPC 1-7
IPC 8 full level
H04H 60/23 (2008.01); H04H 60/91 (2008.01); H04H 60/94 (2008.01)
CPC (source: EP)
H04H 60/23 (2013.01); H04H 60/91 (2013.01); H04H 60/94 (2013.01)
Citation (search report)
- [X] DE 4424380 A1 19960118 - DEUTSCHE TELEKOM MOBIL [DE]
- [X] US 5822324 A 19981013 - KOSTRESKI BRUCE [US], et al
- [A] ALTY J ET AL: "MEMO: THE SPECIFICATION OF A HYBRID SYSTEM FOR INTERACTIVE BROADCAST AND INTERNET ACCESS USING DAB AND GSM", PROCEEDINGS OF THE EUROPEAN CONFERENCE ON MULTIMEDIA APPLICATIONS,SERVICES AND TECHNIQUES, 26 May 1999 (1999-05-26), pages 534 - 551, XP001189371
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1081884 A2 20010307; EP 1081884 A3 20051102; DE 19941929 A1 20010315
DOCDB simple family (application)
EP 00118546 A 20000825; DE 19941929 A 19990903