EP 1175781 A1 20020130 - METHOD AND APPARATUS FOR ACCESS CONTROL OF PRE-ENCRYPTED ON-DEMAND TELEVISION SERVICES
Title (en)
METHOD AND APPARATUS FOR ACCESS CONTROL OF PRE-ENCRYPTED ON-DEMAND TELEVISION SERVICES
Title (de)
ZUGANGSKONTROLLVORRICHTUNG- UND VERFAHREN FÜR VORHERVERSCHLÜSSELTE FERNSEHDIENSTE AUF ANFRAGE
Title (fr)
PROCEDE ET APPAREIL DE CONTROLE D'ACCES DE SERVICES TELEVISUELS A LA CARTE PRE-CRYPTES
Publication
Application
Priority
- US 0009800 W 20000412
- US 13236699 P 19990504
Abstract (en)
[origin: WO0067483A1] A method and apparatus for providing access control of pre-encrypted on-demand television content. Existing encryption capability for cable television services or the like is extended to handle pre-encrypted content from a server (12) that is requested on demand by a viewer at a user terminal (20). Alternatively, the pre-encrypted content (provided, e.g. by an encryption device (14) can be broadcast or multicast from the server (12) to a group of viewers. The invention is upgradeable to facilitate implementations of entitlement control algorithms that vary in sophistication as the need dictates. Additionally, the method is extensible to enable access control of pre-encrypted content that is independent of the transport protocol used. Such protocols include, for example, MPEG-2 and Internet Protocol (IP) which may also utilize Public Key Cryptography.
IPC 1-7
IPC 8 full level
H04N 7/16 (2011.01); H04N 7/167 (2011.01); H04N 7/173 (2011.01)
CPC (source: EP)
H04N 7/165 (2013.01); H04N 7/1675 (2013.01); H04N 7/17318 (2013.01); H04N 21/2347 (2013.01); H04N 21/23473 (2013.01); H04N 21/47202 (2013.01); H04N 21/6405 (2013.01)
Citation (search report)
See references of WO 0067483A1
Designated contracting state (EPC)
DE ES FR GB IE
DOCDB simple family (publication)
WO 0067483 A1 20001109; AU 4235900 A 20001117; CA 2372810 A1 20001109; EP 1175781 A1 20020130; MX PA01010808 A 20020514; TW 511377 B 20021121
DOCDB simple family (application)
US 0009800 W 20000412; AU 4235900 A 20000412; CA 2372810 A 20000412; EP 00922124 A 20000412; MX PA01010808 A 20000412; TW 89107372 A 20000419