Distribution of video content using a trusted network key for sharing content
Abstract
Video content from a direct broadcast satellite system is distributed between a host receiver and a client receiver. A family pairing key is transmitted (600) from the direct broadcast satellite system to both the host and client receivers. The family pairing key received by the host and client receivers is decrypted (602) using receiver keys uniquely associated with the host and client receivers, respectively. Program materials are decrypted (712) at the host receiver using a media encryption key and then encrypted (722) at the host receiver using a copy protection key generated (716) by the host receiver using content information decrypted by the family pairing key. The encrypted program materials are transferred (724) from the host receiver to the client receiver. The encrypted program materials are decrypted (734) at the client receiver using the copy protection key. Like the host receiver, the copy protection key is generated (728) by the client receiver using content information decrypted by the family pairing key.

Term
Term ended
Projected expiry passed 17 January 2025, 1.7 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| WO03032553A2 | Cites | World Intellectual Property Organization (WIPO) | X | Search report | 1-9 |
| US2002001386A1 | Cites | United States of America | A | Search report | 1-9 |
| US6157719A | Cites | United States of America | A | Search report | 1-9 |
4 members in 2 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 758811 | United States of America | – | |
| 75881104 | United States of America | A | |
| 758811 | – | – | – |
| US20040758811 | – | – | – |
Members4
| Document | Office | Kind | |
|---|---|---|---|
| EP1575291A2 | European Patent Office (EPO) | A2 | |
| US2007242825A1 | United States of America | A1 | |
| EP1575291A3This record | European Patent Office (EPO) | A3 | |
| US7599494B2 | United States of America | B2 |
11 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Application deemed to be withdrawnWithdrawn18D | 18D | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA | STAA | |
| First examination report despatched17Q | 17Q | |
| Designation fees paidAKX | AKX | |
| Request for examination filed17P | 17P | |
| Designated contracting statesAK | AK | |
| Request for extension of the european patentAX | AX | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | |
| Designated contracting statesAK | AK | |
| Request for extension of the european patentAX | AX | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI |
Numbers
- Publication
- 1575291
- Publication, DOCDB
- 1575291
- Publication, EPODOC
- EP1575291
- Application
- 5250223
- Application, DOCDB
- 05250223
- Application, EPODOC
- EP20050250223
Titles3
- German
- Verteilung von Videoinhalt mit vertrautem Netzwerkschlüssel für gemeinsamen Inhalt
- English
- Distribution of video content using a trusted network key for sharing content
- French
- Distribution du contenu vidéo avec une clé de réseau de confiance pour l' utilisation en commun du contenu
Classification
- CPC, 9
- H04N7/1675
- H04N21/26606
- H04N21/26613
- H04N21/43615
- H04N21/4367
- H04N21/4405
- H04N21/4408
- H04N21/4623
- H04N21/63345
- IPC, 2
- H04N7 16
- H04N7 167
Designated states36
- Contracting states, 30
- Austria
- Belgium
- Bulgaria
- Switzerland
- Cyprus
- Czechia
- Germany
- Denmark
- Estonia
- Spain
- Finland
- France
- United Kingdom
- Greece
- Hungary
- Ireland
- Iceland
- Italy
- Liechtenstein
- Lithuania
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Poland
and 6 moreShow fewer
- Portugal
- Romania
- Sweden
- Slovenia
- Slovakia
- Türkiye
- Extension states, 6
- Albania
- Bosnia and Herzegovina
- Croatia
- Latvia
- North Macedonia
- Yugoslavia, later Serbia and Montenegro (until 2006)