WO2000074381A1 - Systeme de distribution multimedia a bande large a niveaux multiples - Google Patents

Systeme de distribution multimedia a bande large a niveaux multiples Download PDF

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Publication number
WO2000074381A1
WO2000074381A1 PCT/US2000/013503 US0013503W WO0074381A1 WO 2000074381 A1 WO2000074381 A1 WO 2000074381A1 US 0013503 W US0013503 W US 0013503W WO 0074381 A1 WO0074381 A1 WO 0074381A1
Authority
WO
WIPO (PCT)
Prior art keywords
delivery system
set forth
end user
site
multimedia delivery
Prior art date
Application number
PCT/US2000/013503
Other languages
English (en)
Other versions
WO2000074381A9 (fr
Inventor
R. Max Mutrux
Original Assignee
Bridge Information Systems, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridge Information Systems, Inc. filed Critical Bridge Information Systems, Inc.
Priority to AU51381/00A priority Critical patent/AU5138100A/en
Publication of WO2000074381A1 publication Critical patent/WO2000074381A1/fr
Publication of WO2000074381A9 publication Critical patent/WO2000074381A9/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/15Conference systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/472End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/478Supplemental services, e.g. displaying phone caller identification, shopping application
    • H04N21/4782Web browsing, e.g. WebTV
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47End-user applications
    • H04N21/478Supplemental services, e.g. displaying phone caller identification, shopping application
    • H04N21/4788Supplemental services, e.g. displaying phone caller identification, shopping application communicating with other users, e.g. chatting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61Network physical structure; Signal processing
    • H04N21/6106Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/162Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309Transmission or handling of upstream communications
    • H04N7/17318Direct or substantially direct transmission and handling of requests
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/04Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478Provisions for broadband connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/54Store-and-forward switching systems 
    • H04L12/56Packet switching systems
    • H04L12/5601Transfer mode dependent, e.g. ATM
    • H04L2012/5603Access techniques
    • H04L2012/5609Topology
    • H04L2012/561Star, e.g. cross-connect, concentrator, subscriber group equipment, remote electronics
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/54Store-and-forward switching systems 
    • H04L12/56Packet switching systems
    • H04L12/5601Transfer mode dependent, e.g. ATM
    • H04L2012/5614User Network Interface
    • H04L2012/5616Terminal equipment, e.g. codecs, synch.
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/54Store-and-forward switching systems 
    • H04L12/56Packet switching systems
    • H04L12/5601Transfer mode dependent, e.g. ATM
    • H04L2012/5638Services, e.g. multimedia, GOS, QOS
    • H04L2012/5664Support of Video, e.g. MPEG
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/54Store-and-forward switching systems 
    • H04L12/56Packet switching systems
    • H04L12/5601Transfer mode dependent, e.g. ATM
    • H04L2012/5638Services, e.g. multimedia, GOS, QOS
    • H04L2012/5671Support of voice

Definitions

  • the invention relates to information transmission, and more particularly to broad band
  • Such means include radio and television broadcasting, cable systems,
  • the present invention is directed to a broadband multimedia entertainment delivery system
  • ATM Asynchronous Transfer Mode
  • DSL Digital Subscriber Line
  • the system has the ability to provide the following services via
  • the present invention when implemented using ATM-DSL delivery technology, has
  • Another object is the provision of a system which has the capability of delivering an
  • a third object is the provision of such a system which eliminates most fraud problems
  • a fourth object is the provision of such a system which facilitates integration of video
  • a fifth object is the provision of such a system which provides away-from-home
  • a sixth object is the provision of such a system which is flexible so that yet-to-be-
  • Figs. 1-13 are various block-diagrammatic views showing the elements and
  • Fig. 1 illustrates the various levels of the distribution system of the present invention
  • Fig. 2 illustrates the connection from a regional level down to neighborhood
  • FIG. 3 illustrates the connection of national level sites to regional sites, showing key
  • Fig. 4 illustrates key components of the national level sites used in the present
  • Fig. 5 illustrates key components at the regional level of the system of the present
  • Fig. 6 illustrates key components at the area level of the system of the present
  • Fig. 7 illustrates the key connections for the set top box used in the system of the
  • Fig. 8 illustrates the directory server level of the distribution system of the present
  • Fig. 9 illustrates real-time video servers used in the present invention
  • Fig. 10 illustrates the connections for the Key/IEF/Guide servers used in the present
  • Fig. 11 illustrates virtual DVD/CD servers used in the present invention
  • Fig. 12 illustrates telephony connection between the set top box and the telephony
  • Fig. 13 illustrates the various components and software processes of the set top boxes
  • DSL line with its capacity of 6-8 mb, is sufficient for most households, as indicated below.
  • Central City Site there being preferably one NOC per country.
  • the site labeled Central City Site is
  • a regional site there being preferably one Central City Site for each major metropolitan area
  • Central City Site as needed to cover the metropolitan area (e.g., 24 for the greater St. Louis
  • Each node connects with either 30 or 120 houses, and
  • the maximum distance between node and house is 6,000 feet.
  • the National Operations Center contains: (1) Virtual DVD/CD Servers connected to
  • switches which are in turn connected to outgoing ATM lines (ranging from DS3 to OC12 or
  • Management/Provisioning Workstations are used for:
  • Virtual DVD/CD Servers at the national level are used for staging the release of new
  • COs is satellite, but the ATM network may also be used for delivery during its off-peak
  • the Key/IEF/Guide Servers receive the STB-related data (ATM address, key, EP
  • each Central City Site preferably contains: (1) sixteen
  • Figure 6 shows a Central City Site.
  • the sixteen Directory Servers at each Central City Site perform the following:
  • the Directory Server obtains STB key information by making a call to an on-
  • Every active STB in a metropolitan area has an active point-to-point SVC connection with a
  • the Key/IEF/Guide Servers respond to key lookup requests and sends current IEFs
  • each Central City Site have a peer-to-peer relationship on a point-to-multipoint stream, in
  • the Real-Time Video Servers distribute three point-to-multipoint SVC streams for
  • an MPEG 2 stream for their assigned television channel: an MPEG 2 stream, an IEF stream, and a PEP stream (for
  • IEFs are received from the on-site Directory Servers. In addition, requests for IEFs.
  • the Internet Gateway provides internet access to each household via a PVC
  • the gateway acts as a simple router, sending packets to IP address destinations as
  • the City- Area COs contain: (1) Virtual
  • DVD/CD Servers connected to large drive arrays and satellite receivers; and (2) Telephony
  • Gateways interfacing to Telco voice switches. These (1) and (2) are connected to on-site
  • ATM switches which are in turn connected to lines from their Central City Site, and to OC
  • Figure 7 shows a City Area CO.
  • the Virtual DVD/CD Servers at each City Area CO receive 16-hour blocks of
  • the Telephony Gateways at a City Area CO provide a dial-tone to each house in the
  • a PVC connection is established between each STB and the Telephony Gateway
  • the neighborhood distribution nodes or area sites consist of low density ATMDSL
  • the lowest level of the distribution system of the present invention is the Set Top Box
  • STB can be attached to a television, home
  • the STB has an integrated web browser, so internet access is
  • Ethernet port can be mapped to a closed users' group belonging to the households
  • VPN SOHO network
  • a smart card slot for multiple external smart cards is provided on the front of the
  • Each card can be programmed for different access levels to television channels,
  • the cards are portable, allowing use in other
  • STBs thereby providing on-the-road access to voice-mail, internet, and corporate network
  • the STB is provided with its own keys and the 16 universal
  • a digital signature authentication and authorization method is employed at all levels
  • Each Set-Top Box is given its own private key upon manufacture, in addition
  • the user's STB public key, ATM address, IP Address, and authorization level are entered into the system at the NOC level,
  • Every machine in the system is assigned a private key, and as a general rule, each time
  • Symmetrical authorization is employed, based on
  • Gateway-based services authentication only takes place once, when the STB-to-Gateway
  • PVC PVC is first joined.
  • the other services repeat the authentication procedure every time an
  • the ATM switch infrastructure is employed primarily to facilitate: (1) connections
  • DVD/CD Servers connect to the STBs, not vice versa. All channel tuning and media-on-
  • appropriate multimedia delivery machine, which in turn establishes a connection for the
  • the Key/IEF/Guide Servers (KIGS), which sit at the Central City and NOC levels,
  • IEF Servers they receive, authenticate, store, schedule, and transmit current Interactive
  • NOC-based Key/IEF/Guide Servers form (1) point-
  • multipoint SVCs to the city's Directory Servers, used to provide the Directory Servers with
  • point-to-point SVC Joins from the Directory Servers for key lookups.
  • Real-Time Video Servers sit at the Central City Sites only. Each Real-Time Video
  • RTVS receives the real-time video/audio streams for one network television channel.
  • the RTVS encodes the streams in MPEG 2 format and sends them out via a point-to-
  • Each RTVS also maintains SVC connections with all 16 on-site Directory Servers,
  • the Directory Servers listen to
  • Servers also accept (or reject) SVC connections initiated by the STBs, based on authorization
  • Directory Servers can then:
  • Each of the 16 Directory Servers at a Central City Site has a "well known" ATM address
  • Virtual DVD/CD Servers at the City Area COs have access to 16-hour blocks of
  • DVD/CD Servers per site have this functionality).
  • the STB then connects to the Virtual
  • DVD/CD “Scheduler” Server which provides movie or CD guide information (i.e., available
  • the Scheduler Server checks all on-site servers for a program block
  • the Scheduler Server requests that an SVC be joined from the Virtual DVD Server
  • a dial tone is provided to each house in an area via the Telephony Gateways at the
  • Gateway when the box is first activated.
  • the usual authentication process occurs, and the
  • PVC then remains mapped, ready to be activated whenever a phone connected to the STB is
  • Tl interface to Telco voice switches is used to provide a dial- tone.
  • Outgoing calls can be routed via the same Tl interface, or through the ATM switching
  • Internet gateways located at Central City Sites, provides internet access to each
  • a PVC connection between the Internet Gateway and each STB is initially set up
  • the gateway then acts as a simple router,
  • multimedia content generally connects to the boxes, not vice versa
  • the STB receives a movie or CD from a Virtual DVD/CD Server.
  • the STB receives a movie or CD from a Virtual DVD/CD Server.
  • STB requests are sent out to the rest of the system primarily via a Central City Site
  • Directory Servers have two broad functions: (1) coordinating
  • the Directory Server processes which handle these functions are shown in
  • the Directory Server receives EEF and
  • Multipointer running on the KIG Server sends the documents to the EEF and Guide Listener
  • Directory Servers refer all channel tuning requests from the STBs to the
  • Directory Servers store the keys, ATM address, telephone number, and IP
  • Each Real-Time Video Server receives the real-time video/audio streams for
  • the RTVS encodes the streams in MPEG 2 format and
  • the RTVS also sends out a second point-to-multipoint SVC stream for
  • PIP picture-in-picture
  • the RTVS sends out a third point-to-multipoint SVC stream consisting of the IEFs for its
  • PIP stream will go to a different set of STBs (tuned to the server's channel for PIP), than the
  • the encoder processes the streams into a
  • the input for IEFs is sent from the Directory Servers, and enters via
  • multipointers receives join and delete requests from the Directory Servers and routes them to
  • RTVSs are essentially "virtual"
  • Each RTVS is assigned one television channel, received as raw video/audio streams, and has
  • the Virtual DVD/CD Servers When first brought on line, the Virtual DVD/CD Servers connect to a Central City
  • Server can determine the proper Virtual DVD/CD Server for the STB to query (i.e., a server
  • Movie or CD guide information i.e., available titles
  • SVC is then joined from a Program Block Server to the STB for the delivery of the requested
  • a dial tone is provided to each house in an area via the Telephony Gateways at the
  • a Tl interface to Telco voice switches is used to provide a dial-tone.
  • Outgoing calls can be routed via the same Tl interface, or through the ATM switching system
  • Each Set-Top Box contains two CPUs, which boot from common flash memory.
  • CPU 1 then runs with its own private DRAM memory, and CPU 2 runs from flash and
  • CPU 2 handles user requests (tuning channels), and performs most of the higher functions of
  • the box such as requesting a new channel and checking for authorization via the Directory
  • a Set-Top Box contains the following main hardware
  • CPU #1 - runs the ATM/DSL controller, Ethernet controller, and POTS lines 1 and 2.
  • CPU #2 - connects to IR, keyboard, mouse, USB, smart card interface
  • the video controller has video in and out
  • FIGS 13b and 13c show the software processes running on CPU 1 and CPU 2,
  • This process allows the processes from CPU 2 access to the ATM layer running off of CPU 1.
  • the Real-Time Video Coordinator (also a process on CPU 2 of the STB) tells the
  • Video Stream Subsystem on CPU 1 to throw away its previous connection, if any.
  • the Real-Time Video Coordinator tells the DS Proxy /Agent to request channel 100.
  • the STB Connection Manager (a process running on the Directory Server) checks the
  • STB database on the DS for authorization information. If the STB is authorized for
  • RTVCM Real-Time Video Connection Manager
  • the control process running on the RTVS receives the join request and hands it off to
  • the MPEG2 multipointer which performs an ATM join of its point-to-multipoint
  • the Directory Server looks up the addresses of the primary and secondary VDVD
  • the STB makes a point-to-point SVC connection to the Scheduler process running on
  • the Scheduler queries its Program Database and returns a Movie Guide display to the
  • the Scheduler makes a call to a Directory Server to verify authorization
  • VDVD Scheduler tells Program Block Server (PBS) to open an SVC to the box.
  • PBS Program Block Server
  • Video stream subsystem on CPU 1 of the box requests a block from the PBS
  • the Block Delivery System manages duration of the VDVD Server to STB

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un système de distribution de divertissement multimédia à bande large utilisant un mode de transfert asynchrone (ATM) et une ligne d'abonné numérique (DSL) ou d'autres techniques de distribution à bande large destinés à distribuer le contenu multimédia à des boîtiers de décodeurs (STB) de foyers ou de bureaux. Ce système permet de fournir les services suivants par l'intermédiaire d'un boîtier décodeur: télévision de réseau à effets interactifs (IEF), affiliés de réseaux locaux à IEF, films sur demande avec pause/relance, prélecture d'un CD de musique sur demande, accès à Internet ultra rapide (disponible à partir d'un poste de télévision et d'un ordinateur domestique), service téléphonique (vocal) ordinaire, répondeur téléphonique/messagerie électronique vocale virtuels et l'option de lignes multiples, vidéoconférence (avec d'autres abonnés du système), accès à distance pour participer à des réseaux informatiques commerciaux, diverses cartes à microcircuit programmables. Lorsque le système décrit par cette invention met en oeuvre les techniques de distribution ATM-DSL, il présente un avantage majeur comparé aux systèmes traditionnels dans lesquels on peut utiliser des lignes téléphoniques existantes non terminées pour distribuer le contenu sur le segment final (6 000 pieds) de transmission. On peut les compléter avec une seconde ligne DSL à paire torsadée ou avec une liaison VDSL, lorsque l'on souhaite une augmentation de la capacité (par exemple, plus d'un boîtier décodeur).
PCT/US2000/013503 1999-05-18 2000-05-17 Systeme de distribution multimedia a bande large a niveaux multiples WO2000074381A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU51381/00A AU5138100A (en) 1999-05-18 2000-05-17 Multi-level broadband multimedia delivery system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31417999A 1999-05-18 1999-05-18
US09/314,179 1999-05-18

Publications (2)

Publication Number Publication Date
WO2000074381A1 true WO2000074381A1 (fr) 2000-12-07
WO2000074381A9 WO2000074381A9 (fr) 2002-02-21

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PCT/US2000/013503 WO2000074381A1 (fr) 1999-05-18 2000-05-17 Systeme de distribution multimedia a bande large a niveaux multiples

Country Status (2)

Country Link
AU (1) AU5138100A (fr)
WO (1) WO2000074381A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1328135A1 (fr) * 2002-01-15 2003-07-16 Telefonaktiebolaget Lm Ericsson Procédé flexible et variable pour le traitement d'équipement de télécommunication par la commande de réseaux d'accés ATM
EP1380165A1 (fr) * 2001-04-13 2004-01-14 Polycom, Inc. Systeme de visioconference modulaire
EP1487168A1 (fr) * 2002-07-30 2004-12-15 Imagictv Inc. Transmission sécurisée à destinations multiples
EP1543436A1 (fr) * 2002-08-22 2005-06-22 Huwell Technology Inc. Systeme de services en temps reel utilisant la communication interactive de donnees, et procede associe
CN102075524A (zh) * 2010-12-28 2011-05-25 广东楚天龙智能卡有限公司 一种通过智能卡开展数字媒体互动业务的方法

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EP0735763A1 (fr) * 1995-03-31 1996-10-02 Sony Telecom (Europe) N.V. Système d'information à la demande
US5610841A (en) * 1993-09-30 1997-03-11 Matsushita Electric Industrial Co., Ltd. Video server

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US5610841A (en) * 1993-09-30 1997-03-11 Matsushita Electric Industrial Co., Ltd. Video server
EP0735763A1 (fr) * 1995-03-31 1996-10-02 Sony Telecom (Europe) N.V. Système d'information à la demande

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Title
BANKAPUR R J ET AL: "SWITCHED DIGITAL VIDEO ACCESS NETWORKS", BELL LABS TECHNICAL JOURNAL,US,BELL LABORATORIES, vol. 1, no. 1, 21 June 1996 (1996-06-21), pages 66 - 77, XP000635762, ISSN: 1089-7089 *
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1380165A1 (fr) * 2001-04-13 2004-01-14 Polycom, Inc. Systeme de visioconference modulaire
EP1380165A4 (fr) * 2001-04-13 2006-04-26 Polycom Inc Systeme de visioconference modulaire
EP1328135A1 (fr) * 2002-01-15 2003-07-16 Telefonaktiebolaget Lm Ericsson Procédé flexible et variable pour le traitement d'équipement de télécommunication par la commande de réseaux d'accés ATM
WO2003061332A1 (fr) * 2002-01-15 2003-07-24 Telefonaktiebolaget Lm Ericsson (Publ) Procede souple et evolutif permettant de manier des installations de communication par la commande de reseaux d'acces a mode de transfert asynchrone (atm)
US7474663B2 (en) 2002-01-15 2009-01-06 Telefonaktiebolaget Lm Ericsson (Publ) Flexible and scalable method for handling telecommunication equipments through the control of ATM access networks
EP1487168A1 (fr) * 2002-07-30 2004-12-15 Imagictv Inc. Transmission sécurisée à destinations multiples
US7263610B2 (en) 2002-07-30 2007-08-28 Imagictv, Inc. Secure multicast flow
EP1543436A1 (fr) * 2002-08-22 2005-06-22 Huwell Technology Inc. Systeme de services en temps reel utilisant la communication interactive de donnees, et procede associe
EP1543436A4 (fr) * 2002-08-22 2006-02-08 Huwell Technology Inc Systeme de services en temps reel utilisant la communication interactive de donnees, et procede associe
CN102075524A (zh) * 2010-12-28 2011-05-25 广东楚天龙智能卡有限公司 一种通过智能卡开展数字媒体互动业务的方法

Also Published As

Publication number Publication date
WO2000074381A9 (fr) 2002-02-21
AU5138100A (en) 2000-12-18

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