CA2237293A1 - Procede et appareil assurant l'acces conditionnel a une multiplicite de fournisseurs de services dans des reseaux interactifs de transmission en mode connexion - Google Patents
Procede et appareil assurant l'acces conditionnel a une multiplicite de fournisseurs de services dans des reseaux interactifs de transmission en mode connexion Download PDFInfo
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- CA2237293A1 CA2237293A1 CA002237293A CA2237293A CA2237293A1 CA 2237293 A1 CA2237293 A1 CA 2237293A1 CA 002237293 A CA002237293 A CA 002237293A CA 2237293 A CA2237293 A CA 2237293A CA 2237293 A1 CA2237293 A1 CA 2237293A1
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Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Cette invention concerne des procédés et un dispositif permettant à des clients autorisés seulement d'accéder à des programmes comportant au moins un élément vidéo, un élément audio ou des données requises par un client auprès d'un fournisseur de service (SP) (110) par l'intermédiaire d'un système de services d'informations interactif (10), qui transmet les programmes requis sous forme de paquets porteurs de programmes vers une unité de raccordement (STU) (90) associée audit client (130). Ledit appareil, qui est positionné entre le fournisseur de service (110) et l'unité de raccordement (90), comporte un organe conçu pour recevoir des paquets porteurs de programme selon un premier protocole de réseau à partir d'une première liaison de données (40) et pour extraire les paquets du premier protocole de réseau, un organe conçu pour ajouter l'accès conditionnel aux paquets porteurs de programme et un organe conçu pour ré-encapsuler les paquets porteurs de programme selon un second protocole de réseau et pour ré-emettre les paquets porteurs de programme sur une seconde liaison de données (50). L'invention concerne des procédés de mise en application de l'accès conditionnel qui consistent à chiffrer les paquets porteurs du programme sélectionné avec une première clé, à chiffrer la première clé avec une seconde clé et à chiffrer la seconde clé selon un algorithme de chiffrement à clé publique, ladite clé publique utilisée par cet algorithme correspondant à une clé privée stockée à l'intérieur de l'unité de raccordement (90) associée au client (130).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/580,759 US5870474A (en) | 1995-12-04 | 1995-12-29 | Method and apparatus for providing conditional access in connection-oriented, interactive networks with a multiplicity of service providers |
| US08/580,759 | 1995-12-29 | ||
| PCT/US1996/013743 WO1997024832A1 (fr) | 1995-12-29 | 1996-08-22 | Procede et appareil assurant l'acces conditionnel a une multiplicite de fournisseurs de services dans des reseaux interactifs de transmission en mode connexion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2237293A1 true CA2237293A1 (fr) | 1997-07-10 |
Family
ID=29405931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002237293A Abandoned CA2237293A1 (fr) | 1995-12-29 | 1996-08-22 | Procede et appareil assurant l'acces conditionnel a une multiplicite de fournisseurs de services dans des reseaux interactifs de transmission en mode connexion |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2237293A1 (fr) |
Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6895544B1 (en) | 1999-06-12 | 2005-05-17 | Samsung Electronics Co., Ltd. | Encoding method of multimedia data and encoding device therefor |
| US10856020B2 (en) | 2011-09-01 | 2020-12-01 | Divx, Llc | Systems and methods for distributing content using a common set of encryption keys |
| US10880620B2 (en) | 2013-05-31 | 2020-12-29 | Divx, Llc | Playback synchronization across playback devices |
| US10893305B2 (en) | 2014-04-05 | 2021-01-12 | Divx, Llc | Systems and methods for encoding and playing back video at different frame rates using enhancement layers |
| US10904594B2 (en) | 2016-05-24 | 2021-01-26 | Divx, Llc | Systems and methods for providing variable speeds in a trick-play mode |
| US10917449B2 (en) | 2013-03-15 | 2021-02-09 | Divx, Llc | Systems, methods, and media for delivery of content |
| US10931982B2 (en) | 2011-08-30 | 2021-02-23 | Divx, Llc | Systems and methods for encoding and streaming video encoded using a plurality of maximum bitrate levels |
| US10979782B2 (en) | 2012-08-31 | 2021-04-13 | Divx, Llc | System and method for decreasing an initial buffering period of an adaptive streaming system |
| US10992955B2 (en) | 2011-01-05 | 2021-04-27 | Divx, Llc | Systems and methods for performing adaptive bitrate streaming |
| US11012641B2 (en) | 2003-12-08 | 2021-05-18 | Divx, Llc | Multimedia distribution system for multimedia files with interleaved media chunks of varying types |
| US11017816B2 (en) | 2003-12-08 | 2021-05-25 | Divx, Llc | Multimedia distribution system |
| US11044502B2 (en) | 2016-05-24 | 2021-06-22 | Divx, Llc | Systems and methods for providing audio content during trick-play playback |
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| USRE48748E1 (en) | 2011-06-29 | 2021-09-21 | Divx, Llc | Systems and methods for estimating available bandwidth and performing initial stream selection when streaming content |
| USRE48761E1 (en) | 2012-12-31 | 2021-09-28 | Divx, Llc | Use of objective quality measures of streamed content to reduce streaming bandwidth |
| US11134115B2 (en) | 2015-02-27 | 2021-09-28 | Divx, Llc | Systems and methods for frame duplication and frame extension in live video encoding and streaming |
| US11178435B2 (en) | 2011-09-01 | 2021-11-16 | Divx, Llc | Systems and methods for saving encoded media streamed using adaptive bitrate streaming |
| US11178200B2 (en) | 2013-12-30 | 2021-11-16 | Divx, Llc | Systems and methods for playing adaptive bitrate streaming content by multicast |
| US11190497B2 (en) | 2011-08-31 | 2021-11-30 | Divx, Llc | Systems and methods for application identification |
| US11245938B2 (en) | 2014-08-07 | 2022-02-08 | Divx, Llc | Systems and methods for protecting elementary bitstreams incorporating independently encoded tiles |
| US11272232B2 (en) | 2013-05-31 | 2022-03-08 | Divx, Llc | Synchronizing multiple over the top streaming clients |
| US11343300B2 (en) | 2017-02-17 | 2022-05-24 | Divx, Llc | Systems and methods for adaptive switching between multiple content delivery networks during adaptive bitrate streaming |
| US11349892B2 (en) | 2015-01-06 | 2022-05-31 | Divx, Llc | Systems and methods for encoding and sharing content between devices |
| US11438394B2 (en) | 2012-12-31 | 2022-09-06 | Divx, Llc | Systems, methods, and media for controlling delivery of content |
| US11457054B2 (en) | 2011-08-30 | 2022-09-27 | Divx, Llc | Selection of resolutions for seamless resolution switching of multimedia content |
| US11470405B2 (en) | 2013-05-30 | 2022-10-11 | Divx, Llc | Network video streaming with trick play based on separate trick play files |
| US11495266B2 (en) | 2007-11-16 | 2022-11-08 | Divx, Llc | Systems and methods for playing back multimedia files incorporating reduced index structures |
| US11526582B2 (en) | 2012-01-06 | 2022-12-13 | Divx, Llc | Systems and methods for enabling playback of digital content using status associable electronic tickets and ticket tokens representing grant of access rights |
| US11539780B2 (en) | 2016-03-30 | 2022-12-27 | Divx, Llc | Systems and methods for quick start-up of playback |
| US11825142B2 (en) | 2019-03-21 | 2023-11-21 | Divx, Llc | Systems and methods for multimedia swarms |
| US11849112B2 (en) | 2013-03-15 | 2023-12-19 | Divx, Llc | Systems, methods, and media for distributed transcoding video data |
| US11886545B2 (en) | 2006-03-14 | 2024-01-30 | Divx, Llc | Federated digital rights management scheme including trusted systems |
| US12244660B2 (en) | 2016-09-08 | 2025-03-04 | Divx, Llc | Systems and methods for adaptive buffering for digital video streaming |
| US12610044B2 (en) | 2011-01-06 | 2026-04-21 | Divx, Llc | Systems and methods for encoding alternative streams of video for use in adaptive bitrate streaming |
-
1996
- 1996-08-22 CA CA002237293A patent/CA2237293A1/fr not_active Abandoned
Cited By (79)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6895544B1 (en) | 1999-06-12 | 2005-05-17 | Samsung Electronics Co., Ltd. | Encoding method of multimedia data and encoding device therefor |
| US11509839B2 (en) | 2003-12-08 | 2022-11-22 | Divx, Llc | Multimedia distribution system for multimedia files with packed frames |
| US11735227B2 (en) | 2003-12-08 | 2023-08-22 | Divx, Llc | Multimedia distribution system |
| US11735228B2 (en) | 2003-12-08 | 2023-08-22 | Divx, Llc | Multimedia distribution system |
| US11159746B2 (en) | 2003-12-08 | 2021-10-26 | Divx, Llc | Multimedia distribution system for multimedia files with packed frames |
| US11297263B2 (en) | 2003-12-08 | 2022-04-05 | Divx, Llc | Multimedia distribution system for multimedia files with packed frames |
| US11355159B2 (en) | 2003-12-08 | 2022-06-07 | Divx, Llc | Multimedia distribution system |
| US11012641B2 (en) | 2003-12-08 | 2021-05-18 | Divx, Llc | Multimedia distribution system for multimedia files with interleaved media chunks of varying types |
| US11017816B2 (en) | 2003-12-08 | 2021-05-25 | Divx, Llc | Multimedia distribution system |
| US12470781B2 (en) | 2006-03-14 | 2025-11-11 | Divx, Llc | Federated digital rights management scheme including trusted systems |
| US11886545B2 (en) | 2006-03-14 | 2024-01-30 | Divx, Llc | Federated digital rights management scheme including trusted systems |
| US11706276B2 (en) | 2007-01-05 | 2023-07-18 | Divx, Llc | Systems and methods for seeking within multimedia content during streaming playback |
| US11050808B2 (en) | 2007-01-05 | 2021-06-29 | Divx, Llc | Systems and methods for seeking within multimedia content during streaming playback |
| US12267380B2 (en) | 2007-01-05 | 2025-04-01 | Divx, Llc | Systems and methods for seeking within multimedia content during streaming playback |
| US11495266B2 (en) | 2007-11-16 | 2022-11-08 | Divx, Llc | Systems and methods for playing back multimedia files incorporating reduced index structures |
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