Super encrypted storage and retrieval of media programs in a hard-paired receiver and storage device
Abstract
A method and apparatus for storing and retrieving program material for subsequent replay is disclosed. The apparatus comprises a tuner (410), for receiving a data stream comprising encrypted access control information and the program material encrypted according to a first (CW) encryption key, the access control information including the first encryption key; a first encryption module (552), communicatively coupled to the tuner (410) and communicatively coupleable to a media storage device (524), for further encrypting the encrypted program material according to a second encryption key (514) and for encrypting the second encryption key (514) according to a third encryption key (518) to produce a fourth encryption key (520); a first decryption module (550) communicatively coupleable to the media storage device (524), for decrypting the fourth encryption key (520) retrieved from the media storage device (524) using the third encryption key (518) to produce the second encryption key (514), and for decrypting the further encrypted program material (510) retrieved from the media program device (524) to produce the encrypted program material (514); a conditional access module (406) communicatively coupled to the first decryption module (552), for decrypting the encrypted access control information to produce the first (CW) encryption key; and a second decryption module (540), for decrypting the program material using the first (CW) encryption key.

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1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| WO0013412A1 | Cites | World Intellectual Property Organization (WIPO) | A | Search report | 1,2,4,8,10 |
| EP0975165A2 | Cites | European Patent Office (EPO) | A | Search report | 1-7,9-11 |
| EP0989557A1 | Cites | European Patent Office (EPO) | Y | Search report | 1-6,10,11 |
| US5912969A | Cites | United States of America | Y | Search report | 1-6,10,11 |
| "1ST REPORT OF EBU / SMPTE TASK FORCE FOR HARMONIZED STANDARDS FOR THE EXCHANGE OF TELEVISION PROGRAM MATERIAL AS BIT STREAMS", EBU REVIEW- TECHNICAL, EUROPEAN BROADCASTING UNION. BRUSSELS, BE, no. 272, 21 June 1997 (1997-06-21), pages 1 - 73, XP000720137, ISSN: 0251-0936 | Non-patent | – | – | Search report | – |
12 members in 6 offices; this record represents the family
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 621476 | United States of America | – | |
| 62147600 | United States of America | A | |
| 621476 | – | – | – |
| US20000621476 | – | – | – |
Members12
| Document | Office | Kind | |
|---|---|---|---|
| EP1176826A2 | European Patent Office (EPO) | A2 | |
| JP2002111655A | Japan | A | |
| EP1176826A3This record | European Patent Office (EPO) | A3 | |
| US7203311B1 | United States of America | B1 | |
| US2007133795A1 | United States of America | A1 | |
| US7480381B2 | United States of America | B2 | |
| EP1176826B1 | European Patent Office (EPO) | B1 | |
| AT444651T | Austria | T | |
| ATE444651T1 | Austria | T1 | |
| JP4358463B2 | Japan | B2 | |
| DE60140029D1 | Germany | D1 | |
| ES2333773T3 | Spain | T3 |
57 legal events, as 7 offices reported them to INPADOC
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| European patents granted designating irelandGrantedFG4D | FG4D | IE | |
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| Request for extension of the european patentAL;LT;LV;MK;RO;SIAX | AX | EP | |
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Numbers
- Publication
- 1176826
- Publication, DOCDB
- 1176826
- Publication, EPODOC
- EP1176826
- Application
- 1117554
- Application, DOCDB
- 01117554
- Application, EPODOC
- EP20010117554
Titles3
- German
- Superverschlüsselte Speicherung und Rückgewinnung von Medienprogrammen in einem paarweisen Empfänger und einer Speichervorrichtung
- English
- Super encrypted storage and retrieval of media programs in a hard-paired receiver and storage device
- French
- Stockage superchiffré et récupération des programmes audiovisuels d'un récepteur à pair et un dispositif de stockage
Classification
- CPC, 12
- H04N21/4147
- H04N5/76
- H04N5/783
- H04N7/163
- H04N7/1675
- H04N7/17327
- H04N9/8042
- H04N9/8205
- H04N21/4331
- H04N21/4334
- H04N21/4367
- H04N21/47202
- IPC, 18
- H04N5 92
- G06F21 10
- H04L9 08
- H04L9 14
- H04N5 76
- H04N5 783
- H04N5 91
- H04N7 16
- H04N7 167
- H04N7 173
- H04N9 804
- H04N9 82
- H04N21 4147
- H04N21 418
- H04N21 433
- H04N21 4367
- H04N21 4408
- H04N21 472
Designated states2
- Contracting states, 1
- Türkiye
- Extension states, 1
- Slovenia