EP 1483900 A1 20041208 - CA SYSTEM FOR BROADCAST DTV USING MULTIPLE KEYS FOR DIFFERENT SERVICE PROVIDERS AND SERVICE AREAS
Title (en)
CA SYSTEM FOR BROADCAST DTV USING MULTIPLE KEYS FOR DIFFERENT SERVICE PROVIDERS AND SERVICE AREAS
Title (de)
SYSTEM K MIT BEDINGTEM ZUGANG FÜR DIGITALE FERNSEH-RUNDFUNKSYSTEME MIT MEHREREN SCHLÜSSELN FÜR VERSCHIEDENE DIENSTANBIETER UND DIENSTGEBIETE
Title (fr)
SYSTEME CA (D'ACCES CONDITIONNEL) POUR TELEVISION NUMERIQUE FAISANT INTERVENIR PLUSIEURS CLES POUR DES FOURNISSEURS DE SERVICES ET DES ZONES DE SERVICES DIFFERENTS
Publication
Application
Priority
US 0129818 W 20010925
Abstract (en)
[origin: WO03043310A1] A method for managing access to scrambled broadcast or transmitted events received from a variety of service providers (including broadcast televison networks, cable television networks, digital satellite systems). In one preferred embodiment, each service provider employs a different public key for encrypting the access information message, and each smart card includes the corresponding private keys for the public keys, thereby permitting a user to access events form various service providers without changing the smart card.
IPC 1-7
IPC 8 full level
H04H 20/00 (2008.01); H04H 60/23 (2008.01); H04H 60/42 (2008.01); H04L 9/08 (2006.01); H04L 9/10 (2006.01); H04N 5/00 (2011.01); H04N 7/16 (2011.01); H04N 7/167 (2011.01)
CPC (source: EP KR)
H04H 60/23 (2013.01 - EP); H04H 60/42 (2013.01 - EP); H04N 7/163 (2013.01 - EP); H04N 7/1675 (2013.01 - EP); H04N 21/26606 (2013.01 - EP); H04N 21/26613 (2013.01 - EP); H04N 21/418 (2013.01 - KR); H04N 21/4181 (2013.01 - EP); H04N 21/43607 (2013.01 - EP); H04N 21/4405 (2013.01 - KR); H04N 21/4516 (2013.01 - EP); H04N 21/454 (2013.01 - EP); H04N 21/462 (2013.01 - KR)
Citation (search report)
See references of WO 03043310A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 03043310 A1 20030522; BR 0117132 A 20041013; CN 1310497 C 20070411; CN 1550100 A 20041124; EP 1483900 A1 20041208; IL 160542 A0 20040725; JP 2005510137 A 20050414; KR 20040037133 A 20040504; MX PA04002726 A 20051005
DOCDB simple family (application)
US 0129818 W 20010925; BR 0117132 A 20010925; CN 01823661 A 20010925; EP 01977158 A 20010925; IL 16054201 A 20010925; JP 2003545013 A 20010925; KR 20047004395 A 20010925; MX PA04002726 A 20010925