EP1314270A1 - Device for routing digital data flows and in particular for routing packet transmission data flows - Google Patents

Device for routing digital data flows and in particular for routing packet transmission data flows

Info

Publication number
EP1314270A1
EP1314270A1 EP01965376A EP01965376A EP1314270A1 EP 1314270 A1 EP1314270 A1 EP 1314270A1 EP 01965376 A EP01965376 A EP 01965376A EP 01965376 A EP01965376 A EP 01965376A EP 1314270 A1 EP1314270 A1 EP 1314270A1
Authority
EP
European Patent Office
Prior art keywords
computer
digital
box
tuner
decoder
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP01965376A
Other languages
German (de)
French (fr)
Inventor
Jean-Yves Leroux
Sébastien DUSSUTOUR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Neotion SA
Original Assignee
AT Sky SAS
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 AT Sky SAS filed Critical AT Sky SAS
Publication of EP1314270A1 publication Critical patent/EP1314270A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H04H20/63—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast to plural spots in a confined site, e.g. MATV [Master Antenna Television]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution

Definitions

  • the present invention relates to a router device for the flow of 5 digital data.
  • Reception of digital programs or services requires a decoder generally in the form of a box connected to a television set or possibly a computer card.
  • the 5 decoder is the part of the receiver which allows the interpretation and the presentation of the data and not that which allows their decryption - or decryption -, this second part, called "access control", is sometimes completely assimilated to the decoder by language abuse.
  • the installations and materials existing to date, whether it is a digital television with decoder, a video recorder or a 0 digital recorder decoder, allow simultaneous access to only one program, namely for recording, or for viewing.
  • the device aims to remedy this state of affairs. It makes it possible to record an encrypted channel or not on a computer (storage area) and to watch on the computer or television a recorded channel by decrypting it if necessary. For a reasonable cost, it gives the possibility, using a single access control, to choose between three data sources: two external sources (tuners) and one internal source (storage on computer) and three outputs: two external outputs ( computer screen and TV) 0 and an internal output (storage area). It allows you to watch a program on a television while other information is recorded and can be viewed later, possibly being multiplexed with a program watched live (without being synchronous with the television stream).
  • It consists of a box equipped with a tuner connected to a satellite antenna or to a data broadcasting network, a packet demultiplexer for the reception of digital data, means making it possible to connect it to a digital decoder and to a computer as well as a "router" block making it possible to interconnect all the digital stream inputs or outputs, from and to the digital decoder, from and to the computer, and from the tuner.
  • FIG. 1 is the block diagram of an installation allowing the application of the proposed system.
  • This installation comprises a digital decoder 1 connected to a television 2, a computer 3 and a box 4 "flow router" constituting the invention proper.
  • the digital decoder 1 is provided with an interface 5 supporting the digital stream ("1394" type or other digital link) and with a tuner 6 connected to a satellite antenna 7 or a data broadcasting network.
  • the box 4 "flow router” has an interface 5 'allowing it to be connected to the digital decoder 1 and a means of connection with a computer 3, which may consist of a wireless link. It is equipped with a 6 'tuner connected to a 7' satellite antenna or to a data broadcasting network, and a packet demultiplexer for the reception of digital data (possibly MPEG satellite stream). All digital stream inputs or outputs, from and to the digital decoder 1, from and to the computer 3, and from the tuner 6 'are interconnected by a block of the housing 4, the "router" block 9.
  • the router block 9 can be controlled by one or more means such as a control panel on the housing 4 itself (buttons, possibly a liquid crystal screen), telecom- command or software residing in computer 3 (therefore remotely controlled if the protocol connecting the computer to the box is a wireless protocol).
  • the “router block” 9 makes it possible to route at least two independent data streams so as to be able to record or view a stream on the computer while watching a decoded program on the television 2, or to use the digital decoder 1 to view a stream received by the tuner 6 'from the box 4 while the stream received on the tuner 6 from the decoder is routed to the computer via the "router" box. It also allows you to use the decoder to view a stream previously recorded on the computer.
  • the box 4 can be equipped with a chip card reader 10 which can be controlled by an access control 11 on board the box 4 to decrypt a stream received on the tuner of the decoder 1 and reinjected either on the decoder itself either to computer 3 to view or record.
  • a chip card reader 10 which can be controlled by an access control 11 on board the box 4 to decrypt a stream received on the tuner of the decoder 1 and reinjected either on the decoder itself either to computer 3 to view or record.
  • the access control 11 makes it possible to decrypt an encrypted stream recorded on the computer 3, then routed from the computer to the decoder or to the screen of the computer itself (in this case the stream leaves the encrypted from the computer, is decrypted in the box "router" 4 and reinjected in clear towards the computer),
  • the access control 11 also makes it possible to decrypt a stream received on the tuner 6 'of the box 4 and to view either on the television set 2, either on the computer 3 (for example if the stream is a video program, the MPEG2 decoder of the digital decoder 1 can be used after a decryption in the box 4, and if the stream corresponds to data such as encrypted Internet pages , they are rather redirected to the computer 3 after passage through the access control 11.
  • the smart card reader 10 can also be controlled by access control software 8 on board the computer 3 or in the decoder digital 1. In this case the comms andes smart cards can use the box-decoder or box-computer links to allow software to communicate with the smart card.
  • the tuners 6, 6 'and the antennas 7, 7' will be adapted to the chosen reception mode (Hertzian, Satellite, Cable, etc.).

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Radio Relay Systems (AREA)

Abstract

The invention concerns a device for routing digital data flows. It consists of a box (4) equipped with a tuner (6') connected to a satellite antenna (7') or a data distribution network, a packet demultiplexer for receiving digital data, and means for connecting it to a digital decoder (1) and to a computer (3) as well as a routing unit (9) for interconnecting all the digital flow inputs or outputs, from and to the digital decoder (1), from and to the computer (3), and from the tuner (6'). The invention concerns the digital transmission of all types of data, and in particular transmissions using packet coding consisting of a set of data routed in blocks in a network, whether radio, cable or satellite.

Description

DISPOSITIF POUR DIRIGER DES FLUX DE DONNEES NUMERIQUES ET EN PARTICULIER POUR DIRIGER DES DONNEES TRANSMIS EN "PAQUETS" DI SPOSIT I F TO DIRECT DIGITAL DATA STREAMS AND PARTICULARLY TO DIRECT DATA TRANSMITTED IN "PACKETS"
La présente invention a pour objet un dispositif routeur de flux de 5 données numériques.The present invention relates to a router device for the flow of 5 digital data.
Il concerne le domaine de la transmission sous forme numérique d'informations de tous types, et en particulier des émissions utilisant le codage par "paquets" constitués d'un ensemble de données acheminées en blocs dans un 0 réseau, que celui-ci soit de type hertzien, par câble ou par satellite.It relates to the field of the transmission in digital form of information of all types, and in particular of the emissions using coding by "packets" made up of a set of data conveyed in blocks in a 0 network, that this is of wireless, cable or satellite.
La réception des programmes ou des services numériques (satellite, câble...) nécessite un décodeur se présentant généralement sous la forme d'un boîtier raccordé à un téléviseur ou éventuellement d'une carte pour ordinateur. Le 5 décodeur est la partie du récepteur qui permet l'interprétation et la présentation des données et non pas celle qui permet leur déchiffrement - ou décryptage -, cette seconde partie, appelée "contrôle d'accès", est parfois totalement assimilée au décodeur par abus de langage. Les installations et matériels existants à ce jour, qu'il s'agisse d'un téléviseur numérique avec décodeur, d'un magnétoscope ou d'un 0 décodeur enregistreur numérique, ne permettent l'accès simultané qu'à une seule émission, soit pour l'enregistrement, soit pour la visualisation.Reception of digital programs or services (satellite, cable, etc.) requires a decoder generally in the form of a box connected to a television set or possibly a computer card. The 5 decoder is the part of the receiver which allows the interpretation and the presentation of the data and not that which allows their decryption - or decryption -, this second part, called "access control", is sometimes completely assimilated to the decoder by language abuse. The installations and materials existing to date, whether it is a digital television with decoder, a video recorder or a 0 digital recorder decoder, allow simultaneous access to only one program, namely for recording, or for viewing.
Le dispositif selon la présente invention a pour objectif de remédier à cet état de choses. Il permet en effet d'enregistrer une chaîne cryptée ou non sur 5 un ordinateur (zone de stockage) et de regarder sur l'ordinateur ou la télévision une chaîne enregistrée en la décryptant si nécessaire. Pour un coût raisonnable, il donne la possibilité, en utilisant un seul contrôle d'accès, de choisir entre trois sources de données : deux sources externes (tuners) et une source interne (stockage sur ordinateur) et trois sorties : deux sorties externes (écran de l'ordinateur et téléviseur) 0 et une sortie interne (zone de stockage). Il permet de régarder un programme sur un téléviseur pendant que d'autres informations sont enregistrées et pourront être consultées en différé en étant éventuellement multiplexée avec une émission regardée en direct (sans être synchrone avec le flux télévision). II est constitué d'un boîtier équipé d'un tuner raccordé à une antenne satellite ou à un réseau diffuseur de données, d'un démultiplexeur de paquets pour la réception de données numériques, de moyens permettant de le raccorder à un décodeur numérique et à un ordinateur ainsi que d'un bloc "routeur" permettant d'interconnecter toutes les entrées ou sorties de flux numérique, depuis et vers le décodeur numérique, depuis et vers l'ordinateur, et depuis le tuner.The device according to the present invention aims to remedy this state of affairs. It makes it possible to record an encrypted channel or not on a computer (storage area) and to watch on the computer or television a recorded channel by decrypting it if necessary. For a reasonable cost, it gives the possibility, using a single access control, to choose between three data sources: two external sources (tuners) and one internal source (storage on computer) and three outputs: two external outputs ( computer screen and TV) 0 and an internal output (storage area). It allows you to watch a program on a television while other information is recorded and can be viewed later, possibly being multiplexed with a program watched live (without being synchronous with the television stream). It consists of a box equipped with a tuner connected to a satellite antenna or to a data broadcasting network, a packet demultiplexer for the reception of digital data, means making it possible to connect it to a digital decoder and to a computer as well as a "router" block making it possible to interconnect all the digital stream inputs or outputs, from and to the digital decoder, from and to the computer, and from the tuner.
Sur le dessin annexé, donné à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'invention, la figure 1 est le schéma synoptique d'une installation permettant l'application du système proposé.In the accompanying drawing, given by way of nonlimiting example of one of the embodiments of the subject of the invention, FIG. 1 is the block diagram of an installation allowing the application of the proposed system.
Cette installation comporte un décodeur numérique 1 relié à un téléviseur 2, un ordinateur 3 et un boîtier 4 "routeur de flux" constituant l'invention proprement dite.This installation comprises a digital decoder 1 connected to a television 2, a computer 3 and a box 4 "flow router" constituting the invention proper.
Le décodeur numérique 1 est pourvu d'une interface 5 supportant le flux numérique ( type "1394" ou autres liaison numérique) et d'un tuner 6 raccordé à une antenne satellite 7 ou un réseau diffuseur de données.The digital decoder 1 is provided with an interface 5 supporting the digital stream ("1394" type or other digital link) and with a tuner 6 connected to a satellite antenna 7 or a data broadcasting network.
L'ordinateur 3 équipé d'un bus d'interconnexion extérieur à haut débitComputer 3 equipped with an external high-speed interconnection bus
("1394" (firewire), USB, Ethernet ou autre), d'une zone de stockage adaptée à la quantité de données voulue (DD, RAM, CDR, DVDR ou autre) et éventuellement d'un logiciel contrôle d'accès 8.("1394" (firewire), USB, Ethernet or other), a storage area adapted to the amount of data desired (DD, RAM, CDR, DVDR or other) and possibly access control software 8 .
Le boîtier 4 "routeur de flux" comporte une interface 5' permettant de le raccorder au décodeur numérique 1 et un moyen de connexion avec un ordinateur 3, pouvant consister en une liaison sans fil. Il est équipé d'un tuner 6' raccordé à une antenne satellite 7' ou à un réseau diffuseur de données, et d'un démultiplexeur de paquets pour la réception de données numériques (éventuelle- ment flux MPEG satellite). Toutes les entrées ou sorties de flux numérique, du et vers le décodeur numérique 1 , du et vers l'ordinateur 3, et depuis le tuner 6' sont interconnectées par un bloc du boîtier 4, le bloc "routeur" 9. Le bloc routeur 9 peut être commandé par un ou plusieurs moyens tels que panneau de contrôle sur le boîtier 4 lui-même (boutons, éventuellement écran à cristaux liquides), télécom- mande ou logiciel résidant dans l'ordinateur 3 (donc commandé à distance si le protocole reliant l'ordinateur au boîtier est un protocole sans fil). Le "bloc routeur" 9 permet d'acheminer au moins deux flux de données indépendants de façon à pouvoir enregistrer ou visionner un flux sur l'ordinateur pendant qu'on regarde un programme décodé sur le téléviseur 2, ou d'utiliser le décodeur numérique 1 pour visionner un flux reçu par le tuner 6' du boîtier 4 alors que le flux reçu sur le tuner 6 du décodeur est routé vers l'ordinateur via le boîtier "routeur". Il permet également d'utiliser le décodeur pour visionner un flux enregistré préalablement sur l'ordinateur.The box 4 "flow router" has an interface 5 'allowing it to be connected to the digital decoder 1 and a means of connection with a computer 3, which may consist of a wireless link. It is equipped with a 6 'tuner connected to a 7' satellite antenna or to a data broadcasting network, and a packet demultiplexer for the reception of digital data (possibly MPEG satellite stream). All digital stream inputs or outputs, from and to the digital decoder 1, from and to the computer 3, and from the tuner 6 'are interconnected by a block of the housing 4, the "router" block 9. The router block 9 can be controlled by one or more means such as a control panel on the housing 4 itself (buttons, possibly a liquid crystal screen), telecom- command or software residing in computer 3 (therefore remotely controlled if the protocol connecting the computer to the box is a wireless protocol). The “router block” 9 makes it possible to route at least two independent data streams so as to be able to record or view a stream on the computer while watching a decoded program on the television 2, or to use the digital decoder 1 to view a stream received by the tuner 6 'from the box 4 while the stream received on the tuner 6 from the decoder is routed to the computer via the "router" box. It also allows you to use the decoder to view a stream previously recorded on the computer.
Le boîtier 4 peut être équipé d'un lecteur 10 de cartes à puce pouvant être piloté par un contrôle d'accès 11 embarqué dans le boîtier 4 pour décrypter un flux reçu sur le tuner du décodeur 1 et réinjecté soit sur le décodeur lui-même soit vers l'ordinateur 3 pour visionner ou enregistrer. Le contrôle d'accès 11 permet de décrypter un flux crypté enregistré sur l'ordinateur 3, puis acheminé depuis l'ordinateur vers le décodeur ou vers l'écran de l'ordinateur lui-même (dans ce cas le flux sort crypté de l'ordinateur, est décrypté dans le boîtier "routeur" 4 et réinjecté en clair vers l'ordinateur), Le contrôle d'accès 11 permet également de décrypter un flux reçu sur le tuner 6' du boîtier 4 et de visionner soit sur le téléviseur 2, soit sur l'ordinateur 3 (par exemple si le flux est un programme vidéo, on peut utiliser le décodeur MPEG2 du décodeur numérique 1 après un décryptage dans le boîtier 4, et si le flux correspond à des données de type pages Internet cryptées, on les redirige plutôt vers l'ordinateur 3 après passage à travers le contrôle d'accès 11. Le lecteur 10 de cartes à puce peut aussi être piloté par un logiciel contrôle d'accès 8 embarqué sur l'ordinateur 3 ou dans le décodeur numérique 1. Dans ce cas les commandes cartes à puce peuvent utiliser les liaisons boîtier-décodeur ou boîtier-ordinateur pour permettre aux logiciels de dialoguer avec la carte à puce.The box 4 can be equipped with a chip card reader 10 which can be controlled by an access control 11 on board the box 4 to decrypt a stream received on the tuner of the decoder 1 and reinjected either on the decoder itself either to computer 3 to view or record. The access control 11 makes it possible to decrypt an encrypted stream recorded on the computer 3, then routed from the computer to the decoder or to the screen of the computer itself (in this case the stream leaves the encrypted from the computer, is decrypted in the box "router" 4 and reinjected in clear towards the computer), The access control 11 also makes it possible to decrypt a stream received on the tuner 6 'of the box 4 and to view either on the television set 2, either on the computer 3 (for example if the stream is a video program, the MPEG2 decoder of the digital decoder 1 can be used after a decryption in the box 4, and if the stream corresponds to data such as encrypted Internet pages , they are rather redirected to the computer 3 after passage through the access control 11. The smart card reader 10 can also be controlled by access control software 8 on board the computer 3 or in the decoder digital 1. In this case the comms andes smart cards can use the box-decoder or box-computer links to allow software to communicate with the smart card.
Les tuners 6, 6' et les antennes 7, 7' seront adaptés au mode de réception choisi (Hertzienne, Satellite, Câble, etc).The tuners 6, 6 'and the antennas 7, 7' will be adapted to the chosen reception mode (Hertzian, Satellite, Cable, etc.).
Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires. The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.

Claims

REVENDICAT1ONS REVENDICAT1ONS
1 °. Dispositif routeur de flux de données numériques, destiné au contrôle de la transmission sous forme numérique d'informations de tous types, et en particulier des émissions utilisant le codage par "paquets" constitués d'un ensemble de données acheminées en blocs dans un réseau, que celui-ci soit de type hertzien, par câble ou par satellite, caractérisé par un boîtier (4) équipé d'un tuner (6') raccordé à une antenne satellite (7') ou à un réseau diffuseur de données, de moyens permettant de le raccorder à un décodeur numérique (1) et à un ordinateur (3) ainsi que d'un bloc "routeur" (9) permettant d'interconnecter toutes les entrées ou sorties de flux numérique, depuis et vers le décodeur numérique (1), depuis et vers l'ordinateur (3), et depuis le tuner (6').1 °. Digital data flow router device, intended for controlling the transmission in digital form of information of all types, and in particular of transmissions using "packet" coding consisting of a set of data conveyed in blocks in a network, whether this is of the radio type, by cable or by satellite, characterized by a box (4) equipped with a tuner (6 ′) connected to a satellite antenna (7 ′) or to a network for broadcasting data, means allowing it to be connected to a digital decoder (1) and to a computer (3) as well as a "router" block (9) making it possible to interconnect all the digital flow inputs or outputs, from and to the digital decoder ( 1), from and to the computer (3), and from the tuner (6 ').
2°. Dispositif selon la revendication 1 , se caractérisant par le fait que le boîtier (4) comporte un démultiplexeur de paquets pour la réception de données numériques.2 °. Device according to claim 1, characterized in that the housing (4) includes a packet demultiplexer for the reception of digital data.
3°. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le boîtier (4) comporte un contrôle d'accès (11) embarqué dans le boîtier et apte à décrypter un flux reçu sur le tuner (6) du décodeur numérique (1), sur le tuner (6') du boîtier (4) ou enregistré dans l'ordinateur (3).3 °. Device according to any one of the preceding claims, characterized in that the box (4) includes an access control (11) embedded in the box and able to decrypt a stream received on the tuner (6) of the digital decoder (1), on the tuner (6 ') of the box (4) or recorded in the computer (3).
4°. Dispositif selon la revendication 3, se caractérisant par le fait que le boîtier (4) comporte un lecteur (10) de cartes à puce pouvant être piloté par le contrôle d'accès (11) embarqué dans ledit boîtier.4 °. Device according to claim 3, characterized in that the box (4) comprises a reader (10) of smart cards which can be controlled by the access control (11) embedded in said box.
5°. Dispositif selon la revendication 4, se caractérisant par le fait que le système est agencé de manière à ce que les commandes du lecteur (10) de cartes à puce puissent utiliser les liaisons boîtier (4) - décodeur numérique (1) ou boîtier (4) - ordinateur (3) pour être pilotés par un logiciel de contrôle d'accès (8) embarqué dans l'ordinateur (3) ou dans le décodeur numérique (1). 6°. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le "bloc routeur" (9) permet d'acheminer au moins deux flux de données indépendants de façon à pouvoir enregistrer ou visionner un flux sur l'ordinateur pendant qu'on regarde un programme décodé sur le téléviseur (2), ou utiliser le décodeur numérique (1) pour visionner un flux reçu par le tuner (6') du boîtier (4) alors que le flux reçu sur le tuner (6) du décodeur est routé vers l'ordinateur via le boîtier "routeur".5 °. Device according to Claim 4, characterized in that the system is arranged in such a way that the controls of the chip card reader (10) can use the connections between the housing (4) - digital decoder (1) or the housing (4 ) - computer (3) to be controlled by access control software (8) embedded in the computer (3) or in the digital decoder (1). 6 °. Device according to any one of the preceding claims, characterized in that the "router block" (9) makes it possible to route at least two independent data streams so that it can record or view a stream on the computer while 'we are watching a decoded program on the television (2), or use the digital decoder (1) to view a stream received by the tuner (6') of the box (4) while the stream received on the tuner (6) of the decoder is routed to the computer via the "router" box.
7°. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le "bloc routeur" (9) permet d'utiliser le décodeur numérique (1) pour visionner un flux enregistré préalablement sur l'ordinateur (3).7 °. Device according to any one of the preceding claims, characterized in that the "router block" (9) makes it possible to use the digital decoder (1) to view a stream recorded beforehand on the computer (3).
8°. Dispositif selon l'une quelconque des revendications précéden- tes, se caractérisant par le fait que le "bloc routeur" (9) est commandé par panneau de contrôle disposé sur le boîtier (4) ou une télécommande.8 °. Device according to any one of the preceding claims, characterized in that the "router block" (9) is controlled by a control panel arranged on the housing (4) or a remote control.
9°. Dispositif selon l'une quelconque des revendications 1 à 7, se caractérisant par le fait que le "bloc routeur" (9) est commandé par un logiciel résidant dans l'ordinateur (3). 9 °. Device according to any one of Claims 1 to 7, characterized in that the "router block" (9) is controlled by software resident in the computer (3).
EP01965376A 2000-08-30 2001-08-30 Device for routing digital data flows and in particular for routing packet transmission data flows Withdrawn EP1314270A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0011058A FR2813472B1 (en) 2000-08-30 2000-08-30 DIGITAL DATA FLOW ROUTING DEVICE
FR0011058 2000-08-30
PCT/FR2001/002696 WO2002019580A1 (en) 2000-08-30 2001-08-30 Device for routing digital data flows and in particular for routing packet transmission data flows

Publications (1)

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EP1314270A1 true EP1314270A1 (en) 2003-05-28

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US (1) US20030112771A1 (en)
EP (1) EP1314270A1 (en)
FR (1) FR2813472B1 (en)
WO (1) WO2002019580A1 (en)

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WO1989002682A1 (en) * 1987-09-11 1989-03-23 Harvey John C Signal processing apparatus and methods

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