Global patent index - EP 1010324 A1

EP 1010324 A1 2000-06-21 - REPRESENTING ENTITLEMENTS TO SERVICE IN A CONDITIONAL ACCESS SYSTEM

Title (en)

REPRESENTING ENTITLEMENTS TO SERVICE IN A CONDITIONAL ACCESS SYSTEM

Title (de)

ZULASSUNG ZU DIENSTEN IN EINEM SYSTEM MIT BEDINGTEM ZUGANG

Title (fr)

REPRESENTATION DES AUTORISATIONS D'ACCES A DES SERVICES DANS UN SYSTEME A ACCES CONDITIONNEL

Publication

EP 1010324 A1 (EN)

Application

EP 98938224 A

Priority

  • US 9815985 W
  • US 5457597 P
  • US 12678398 A

Abstract (en)

[origin: WO9907146A1] A cable television system provides conditional access to services. The cable television system includes a headend from which service "instances", or programs, are broadcast and a plurality of set top units for receiving the instances and selectively decrypting the instances for display to system subscribers. The service instances are encrypted using public and/or private keys provided by service providers or central authorization agents. Keys used by the set tops for selective decryption may also be public or private in nature, and such keys may be reassigned at different times to provide a cable television system in which piracy concerns are minimized.

IPC 1-7 (main, further and additional classification)

H04N 7/16; H04N 7/167

IPC 8 full level (invention and additional information)

H04H 20/00 (2008.01); H04H 60/23 (2008.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01); H04L 29/06 (2006.01); H04N 7/16 (2011.01); H04N 7/167 (2011.01)

CPC (invention and additional information)

H04L 63/0442 (2013.01); H04H 60/23 (2013.01); H04L 63/045 (2013.01); H04L 63/062 (2013.01); H04N 7/163 (2013.01); H04N 7/1675 (2013.01); H04N 21/2265 (2013.01); H04N 21/26606 (2013.01); H04N 21/4405 (2013.01); H04N 21/4524 (2013.01); H04N 21/63345 (2013.01)

Citation (search report)

See references of WO 9907146A1

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

WO 9907146 A1 19990211; WO 9907146 A8 19990422; WO 9907146 A9 19990520; BR 9815607 A 20011113; EP 1010324 A1 20000621; JP 2002506296 A 20020226; JP 2005245007 A 20050908

INPADOC legal status

2002-05-22 [18R] REFUSED

- Ref Legal Event Code: 18R

- Effective date: 20011227

2001-05-16 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: SCIENTIFIC-ATLANTA, INC.

- Ref Legal Event Code: RAP1

2000-08-30 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20000713

2000-06-21 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000215

2000-06-21 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB IT NL