Nova Patents
AU8764298A

Source authentication of download information in a conditional access system

Abstract

A cable televison 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, ans such keys may be reassigned at different times to provide a cable television system in which piracy concerns are minimized.

Term

Term ended

Projected expiry passed 31 July 2018, 8.1 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

168 members in 13 offices

This recordMember, by publication datePriority claim3 more offices are in the list below

Priority claims9

Priority claims
DocumentOfficeKindDate
5457597United States of AmericaP
12715298United States of AmericaA
9816040United States of AmericaW
09127152–––
60054575–––
PCTUS9816040–––
US19970054575P–––
US19980127152–––
WO1998US16040–––

Members168

Family members, oldest first
DocumentOfficeKind
WO9631982A1World Intellectual Property Organization (WIPO)A1
AU5432496AAustraliaA
TW308771BTaiwan Province of ChinaB
CA2237293A1CanadaA1
WO9724832A1World Intellectual Property Organization (WIPO)A1
AU7009896AAustraliaA
MX9707586AMexicoA
EP0819357A1European Patent Office (EPO)A1
US5742677AUnited States of AmericaA
CN1183198AChinaA
WO9827732A1World Intellectual Property Organization (WIPO)A1
EP0872077A1European Patent Office (EPO)A1
ES2123479T1SpainT1
US5870474AUnited States of AmericaA
WO9907145A1World Intellectual Property Organization (WIPO)A1
WO9907146A1World Intellectual Property Organization (WIPO)A1
WO9907147A1World Intellectual Property Organization (WIPO)A1
WO9907148A1World Intellectual Property Organization (WIPO)A1
WO9907149A1World Intellectual Property Organization (WIPO)A1
WO9907150A1World Intellectual Property Organization (WIPO)A1
WO9907151A1World Intellectual Property Organization (WIPO)A1
AU8670598AAustraliaA
AU8679798AAustraliaA
AU8679898AAustraliaA
AU8759798AAustraliaA
AU8764298AThis recordAustraliaA
AU8823398AAustraliaA
AU8823698AAustraliaA
WO9909743A2World Intellectual Property Organization (WIPO)A2
AU1581699AAustraliaA
WO9907145A8World Intellectual Property Organization (WIPO)A8
WO9907146A8World Intellectual Property Organization (WIPO)A8
DE872077T1GermanyT1
WO9907146A9World Intellectual Property Organization (WIPO)A9
WO9909743A3World Intellectual Property Organization (WIPO)A3
WO9907145A9World Intellectual Property Organization (WIPO)A9
EP0950319A1European Patent Office (EPO)A1
US6005938AUnited States of AmericaA
EP0950319A4European Patent Office (EPO)A4
JP2000502857AJapanA
EP1000508A1European Patent Office (EPO)A1
EP1000509A1European Patent Office (EPO)A1
EP1000510A1European Patent Office (EPO)A1
EP1000511A2European Patent Office (EPO)A2
EP1010323A1European Patent Office (EPO)A1
EP1010324A1European Patent Office (EPO)A1
EP1010325A1European Patent Office (EPO)A1
EP1013091A1European Patent Office (EPO)A1
EP0819357A4European Patent Office (EPO)A4
US6105134AUnited States of AmericaA
US6157719AUnited States of AmericaA
US2001001014A1United States of AmericaA1
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JP2001512842AJapanA
JP2001512935AJapanA
JP2001513587AJapanA
US6292568B1United States of AmericaB1
BR9810967ABrazilA
EP1000508B1European Patent Office (EPO)B1
EP1010323B1European Patent Office (EPO)B1
BR9815607ABrazilA
EP1000511B1European Patent Office (EPO)B1
BR9810966ABrazilA
EP1000510B1European Patent Office (EPO)B1
US2001046299A1United States of AmericaA1
DE69802288D1GermanyD1
DE69802296D1GermanyD1
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DE69802694D1GermanyD1
BR9815606ABrazilA
JP2002506296AJapanA
EP1189438A2European Patent Office (EPO)A2
EP1189439A2European Patent Office (EPO)A2
EP1193974A2European Patent Office (EPO)A2
US2002044658A1United States of AmericaA1
DE69802540T2GermanyT2
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DE69802296T2GermanyT2
US2002094084A1United States of AmericaA1
US6424714B1United States of AmericaB1
US6424717B1United States of AmericaB1
DE69802694T2GermanyT2
EP1013091B1European Patent Office (EPO)B1
DE69808113D1GermanyD1
EP1000509B1European Patent Office (EPO)B1
DE69809757D1GermanyD1
US6510519B2United States of AmericaB2
US6516412B2United States of AmericaB2
US6526508B2United States of AmericaB2
EP0950319B1European Patent Office (EPO)B1
DE69719803D1GermanyD1
US2003074565A1United States of AmericaA1
US6560340B1United States of AmericaB1
DE69808113T2GermanyT2
DE69809757T2GermanyT2
JP2003521718AJapanA
JP2003521818AJapanA
JP2003521820AJapanA
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