WO2001039499A1 - Method for access to a collection of multimedia documents - Google Patents

Method for access to a collection of multimedia documents Download PDF

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Publication number
WO2001039499A1
WO2001039499A1 PCT/EP2000/010598 EP0010598W WO0139499A1 WO 2001039499 A1 WO2001039499 A1 WO 2001039499A1 EP 0010598 W EP0010598 W EP 0010598W WO 0139499 A1 WO0139499 A1 WO 0139499A1
Authority
WO
WIPO (PCT)
Prior art keywords
access
digital multimedia
documents
collection
user
Prior art date
Application number
PCT/EP2000/010598
Other languages
French (fr)
Inventor
Thierry Maman
Original Assignee
Luxsat International S.A.
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 Luxsat International S.A. filed Critical Luxsat International S.A.
Priority to AU79234/00A priority Critical patent/AU7923400A/en
Priority to EP00969557A priority patent/EP1250809A1/en
Publication of WO2001039499A1 publication Critical patent/WO2001039499A1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/765Interface circuits between an apparatus for recording and another apparatus
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00095Systems or arrangements for the transmission of the picture signal
    • H04N1/00103Systems or arrangements for the transmission of the picture signal specially adapted for radio transmission, e.g. via satellites
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21Server components or server architectures
    • H04N21/222Secondary servers, e.g. proxy server, cable television Head-end
    • H04N21/2225Local VOD servers
    • 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
    • H04N21/41Structure of client; Structure of client peripherals
    • H04N21/414Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4147PVR [Personal Video Recorder]
    • 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
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4331Caching operations, e.g. of an advertisement for later insertion during playback
    • 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
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334Recording operations
    • 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
    • H04N21/45Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508Management of client data or end-user data
    • H04N21/4532Management of client data or end-user data involving end-user characteristics, e.g. viewer profile, preferences
    • 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
    • H04N21/45Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/454Content or additional data filtering, e.g. blocking advertisements
    • 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
    • H04N21/45Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/458Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
    • H04N21/4586Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally
    • 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
    • H04N21/6143Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite
    • 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 
    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/633Control signals issued by server directed to the network components or client
    • H04N21/6332Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • 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
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/20Adaptations for transmission via a GHz frequency band, e.g. via satellite
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00281Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
    • H04N1/00283Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal with a television apparatus
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/167Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Definitions

  • the present invention relates to a method for providing access to a large number of users to a collection of digital multimedia documents.
  • Digital multimedia document is understood to mean any document digitized in the form of a computer file which may be of the videos, graphic animations, photos, sounds, music, texts, electronic games or any composition of these multimedia elements and in particular any type of site.
  • the access generally offered to select digital multimedia documents on demand, and in particular to video documents or to Internet sites, is traditionally carried out by a so-called “point-to-point” device.
  • These accesses then require a high speed computer link between each access terminal and the computer server center which has, in stored memory, multimedia documents in digital format.
  • These computer links must allow transfer speeds of 300,000 (three hundred thousand) characters per second minimum for access to television quality video documents.
  • These links can be terrestrial such as cable, satellites, or even wireless.
  • many computer links are required as there are terminals. According to this scheme and in the context of a device for accessing multimedia documents on demand for the general public, as many high-speed computer links are required as there are access terminals to allow the simultaneous transfer of these files. bulky digital.
  • the cost of a broadband computer link is very high and such a configuration supposes a multiplication of this cost by the number of terminals thus making this type of access to demand system financially far too high to date to be actually deployed.
  • the multimedia document server should then send simultaneously a number of files at least equal to the number of connected terminals. Which as part of a consumer project could exceed one hundred thousand terminals. No current computer server can guarantee the flow necessary emission which should then be greater than thirty billion characters per second.
  • the object of the present invention is to propose a method for giving access to a large number of users to a collection of digital multimedia documents, and this from a single server center and without multiplication of computer links.
  • the collection of digital multimedia documents is transmitted by satellite over a given geographical area. Its reception takes place simultaneously using reception terminals by all the users present in this given geographical area.
  • the digital multimedia documents received by the terminals are stored, preferably according to a profile of interest of the user, in a storage unit associated with each terminal. Subsequent access to a stored document will normally require a digital access authorization file which is transmitted to the user after requesting access to the document.
  • Figure 1 illustrates the mechanism of a first step of a method according to the invention. This step corresponds to the sending of documents to dedicated reception terminals 8.
  • Multimedia documents to be made accessible to the dedicated terminals are stored in a server center 1 in the form of computer files.
  • These files are sent to a computer device for satellite transmission of digital data 3 via a high speed terrestrial computer network link 2.
  • the files are therefore coded and sent in the form from an electromagnetic wave to a satellite 10 which returns it 5 over a given geographical area.
  • This operation can concern several files sent simultaneously with priority levels making it possible to predefine the transfer speeds to be allocated to the sending of each file.
  • All of the satellite reception terminals 8 present in the geographic area covered by the satellite 10 simultaneously receive, via a parabolic antenna 6 dedicated to satellite reception, the wave 5 transmitted. This antenna 6 is connected to the terminal via a coaxial computer link 7.
  • the satellite decoding device present in the terminal 8 decodes the electromagnetic wave 5 to recreate the computer files initially coded.
  • the users can personalize the profile of the digital multimedia documents which must actually be stored in the storage unit 9 of the terminal 8.
  • the files reconstituted according to the principle stated above and corresponding to the profile defined by the user are effectively stored in the storage unit 9 of the terminal 8.
  • the files not corresponding to this profile are erased as and when they are received by the terminal 8.
  • the stored files are automatically erased progressively according to their age in order to free up space for storing new received files. It will however be appreciated that the user has the possibility of marking stored files as non-erasable.
  • Figures 2a, 2b and 2c illustrate the mechanism of a second step of a method according to the invention.
  • This step corresponds to the order and access to multimedia documents stored in the terminal.
  • Figure 2-a illustrates the mechanism making it possible to reach a file stored in the storage unit of the terminal 8.
  • the user can seek one or more of these documents by using for example a remote control 12, a keyboard or a mouse computers connected to the reception terminal 8.
  • the list and the details of the documents stored in the storage unit of the terminal 8 are displayed on the monitor 14 connected to the terminal 8.
  • This monitor 14 can be either a traditional television set or a monitor computer science.
  • the terminal 8 connects to the server center 1 via a remote computer link 16, which can for example be a telephone link.
  • the terminal 8 after being identified by the server center 1 sends its request for access rights to the desired multimedia document in the form of a digital file.
  • the server center 1 can then process the access request received.
  • the user 18 telephones a dedicated telephone server 20, by a traditional telephone line 22.
  • the user 18 then dials, using his conventional telephone handset, his identification number followed the number of the document he wants to access.
  • the user 18 can log off, his command is taken into account.
  • This command which is materialized by a digital file, is then sent by the telephone server 20, via a computer link 24, to the server center 1 of digital multimedia documents.
  • the server center can then process the received access request.
  • FIGs 3a and 3b illustrate the mechanism of a third step of a method according to the invention, namely the reception of access rights to multimedia documents stored in the terminal.
  • the server center 1 of multimedia documents generates an authorization as a digital file.
  • This file is sent to the computer system for satellite transmission of digital data 3 via the high-speed terrestrial computer network link 2.
  • the file is therefore coded and sent in the form of an electromagnetic wave 4 to the satellite 10 which returns it to the geographic area it covers.
  • the satellite reception terminal 8 of the user at the origin of the command receives this wave 5 via its parabolic antenna 6. Only the satellite decoding device present in the terminal 8 decodes the electromagnetic wave 5 to recreate the file corresponding to the access authorization in response to the command made by the user.
  • the file corresponding to the authorization allows the terminal 8 to display or play the digital multimedia document, already stored in the storage unit 9 of the terminal 8 and which has is the subject of a command issued by the user.
  • the multimedia document is then displayed on the monitor 14 and / or played by the sound reproduction device.

Abstract

The invention concerns a method for providing access to a large number of users to a collection of digital multimedia. Said collection of digital multimedia documents is transmitted by satellite over a specific geographical zone. It is simultaneously received through receiver terminals by all the users present in said specific geographical zone. The digital multimedia documents received by the terminals are stored, preferably on the basis of the user's interest profile, in a storage unit associated with each terminal. Subsequent access to a stored will require a digital file authorising access which is transmitted to the user after request for access to the document.

Description

Procédé d'accès à une collection de documents multimédias Method for accessing a collection of multimedia documents
La présente invention concerne un procédé pour donner accès à un grand nombre d'utilisateurs à une collection de documents multimédias numériques.The present invention relates to a method for providing access to a large number of users to a collection of digital multimedia documents.
On entend par document multimédia numérique, tout document numérisé sous la forme d'un fichier informatique pouvant être de type vidéos, animations graphiques, photos, sons, musiques, textes, jeux électroniques ou toute composition de ces éléments multimédias et notamment tout type de sitesDigital multimedia document is understood to mean any document digitized in the form of a computer file which may be of the videos, graphic animations, photos, sounds, music, texts, electronic games or any composition of these multimedia elements and in particular any type of site.
Internet accessibles directement ou indirectement par le réseau Internet.Internet accessible directly or indirectly through the Internet.
L'accès généralement offert à des sélections de documents multimédias numériques à la demande, et en particulier à des documents vidéo ou a des sites Internet, est traditionnellement effectué par un dispositif dit de «point-à- point». Ces accès demandent alors une liaison informatique haut débit entre chaque terminal d'accès et le centre serveur informatique qui possède, en mémoire stockée, les documents multimédias au format numérique. Ces liaisons informatiques doivent permettre des vitesses de transfert de 300 000 (trois cent mille) caractères à la seconde minimum pour l'accès à des documents vidéo de qualité télévision. Ces liaisons peuvent être terrestres comme le câble, satellites, ou même hertziennes. Il faut cependant autant de liaisons informatiques qu'il y a de terminaux. Selon ce schéma et dans le cadre d'un dispositif d'accès à la demande de documents multimédias à destination du grand public, il faut alors autant de liaisons informatiques à haut débit que de terminaux d'accès pour permettre le transfert simultané de ces fichiers numériques volumineux. Le coût d'une liaison informatique haut débit est très élevée et une telle configuration suppose une multiplication de ce coût par le nombre de terminaux rendant ainsi ce type de système d'accès à la demande financiè- rement beaucoup trop élevé à ce jour pour être effectivement déployé. De plus le serveur de documents multimédias devrait alors envoyer en simultané un nombre de fichiers au moins égal au nombre de terminaux connectés. Ce qui dans le cadre d'un projet grand public pourrait dépasser la centaine de milliers de terminaux. Aucun serveur informatique actuel ne peut assurer le débit d'émission nécessaire qui devrait alors être supérieur à trente milliards de caractères à la secondes.The access generally offered to select digital multimedia documents on demand, and in particular to video documents or to Internet sites, is traditionally carried out by a so-called “point-to-point” device. These accesses then require a high speed computer link between each access terminal and the computer server center which has, in stored memory, multimedia documents in digital format. These computer links must allow transfer speeds of 300,000 (three hundred thousand) characters per second minimum for access to television quality video documents. These links can be terrestrial such as cable, satellites, or even wireless. However, as many computer links are required as there are terminals. According to this scheme and in the context of a device for accessing multimedia documents on demand for the general public, as many high-speed computer links are required as there are access terminals to allow the simultaneous transfer of these files. bulky digital. The cost of a broadband computer link is very high and such a configuration supposes a multiplication of this cost by the number of terminals thus making this type of access to demand system financially far too high to date to be actually deployed. In addition, the multimedia document server should then send simultaneously a number of files at least equal to the number of connected terminals. Which as part of a consumer project could exceed one hundred thousand terminals. No current computer server can guarantee the flow necessary emission which should then be greater than thirty billion characters per second.
L'objet de la présente invention est de proposer un procédé pour donner accès à un grand nombre d'utilisateurs à une collection de documents multimé- dias numériques, et ceci à partir d'un unique centre serveur et sans multiplication des liaisons informatiques.The object of the present invention is to propose a method for giving access to a large number of users to a collection of digital multimedia documents, and this from a single server center and without multiplication of computer links.
Conformément à l'invention, cet objectif est atteint par un procédé selon la revendication 1 , qui peut être avantageusement complété par les caractéristiques des revendications dépendantes. Selon l'invention la collection de documents multimédias numériques est émise par satellite sur une zone géographique donnée. Sa réception a lieu simultanément à l'aide de terminaux de réception par tous les utilisateurs présents dans cette zone géographique donnée. Les documents multimédias numériques reçus par les terminaux sont stockés, de préférence en fonction d'un profil d'intérêt de l'utilisateur, dans une unité de stockage associée à chaque terminal. L'accès ultérieur à un document stocké nécessitera normalement un fichier numérique d'autorisation d'accès qui est transmis à l'utilisateur après demande d'accès au document.According to the invention, this object is achieved by a method according to claim 1, which can be advantageously supplemented by the features of the dependent claims. According to the invention, the collection of digital multimedia documents is transmitted by satellite over a given geographical area. Its reception takes place simultaneously using reception terminals by all the users present in this given geographical area. The digital multimedia documents received by the terminals are stored, preferably according to a profile of interest of the user, in a storage unit associated with each terminal. Subsequent access to a stored document will normally require a digital access authorization file which is transmitted to the user after requesting access to the document.
D'autres caractéristiques et avantages de l'invention résulteront d'une description détaillée de quelques modes de réalisation avantageux, qui sont présentés ci-dessous, à titre d'illustration, en se référant aux dessins annexés.Other characteristics and advantages of the invention will result from a detailed description of some advantageous embodiments, which are presented below, by way of illustration, with reference to the accompanying drawings.
Ceux-ci représentent dans les Figures 1 , 2-a, 2-b, 2-c, 3-a et 3-b, des schémas simplifiés servant à illustrer des procédés selon l'invention.These represent in Figures 1, 2-a, 2-b, 2-c, 3-a and 3-b, simplified diagrams used to illustrate methods according to the invention.
La Figure 1 illustre le mécanisme d'une première étape d'un procédé se- Ion l'invention. Cette étape correspond à l'envoi de documents vers des terminaux de réception dédiés 8.Figure 1 illustrates the mechanism of a first step of a method according to the invention. This step corresponds to the sending of documents to dedicated reception terminals 8.
Des documents multimédias à rendre accessibles au terminaux dédiés sont stockés dans un centre serveur 1 sous forme de fichiers informatiques.Multimedia documents to be made accessible to the dedicated terminals are stored in a server center 1 in the form of computer files.
Ces fichiers sont envoyés à un dispositif informatique d'émission satellitaire de données numériques 3 par l'intermédiaire d'une liaison réseau informatique terrestre à haut débit 2. Les fichiers sont dès lors codés et envoyés sous forme d'une onde électromagnétique à un satellite 10 qui la renvoie 5 sur une zone géographique donnée. Cet opération peut concerner plusieurs fichiers envoyés simultanément avec des niveaux de priorité permettant de prédéfinir les vitesses de transfert à allouer à l'envoi de chaque fichier. L'ensemble des terminaux 8 de réception satellite présents sur la zone géographique couverte par le satellite 10 reçoivent simultanément, par l'intermédiaire d'une antenne parabolique 6 dédiée à la réception satellitaire, l'onde 5 émise. Cette antenne 6 est reliée au terminal par l'intermédiaire d'une liaison informatique coaxiale 7. Le dispositif de décodage satellitaire présent dans le terminal 8 décode l'onde électromagnétique 5 pour recréer les fichiers informatiques initialement codés. Ces fichiers sont alors stockés dans une unité de stockage 9 du terminal 8, qui peut être physiquement un disque dur informatique traditionnel ou tout autre support de stockage numérique. Ainsi l'ensemble des terminaux 8 présents dans la zone géographique recevant l'onde électromagnétique 5 stockent simultanément les mêmes fichiers dans leur unité de stockage 9. Et ceci, peu importe le nombre de terminaux présents dans cette zone géographique.These files are sent to a computer device for satellite transmission of digital data 3 via a high speed terrestrial computer network link 2. The files are therefore coded and sent in the form from an electromagnetic wave to a satellite 10 which returns it 5 over a given geographical area. This operation can concern several files sent simultaneously with priority levels making it possible to predefine the transfer speeds to be allocated to the sending of each file. All of the satellite reception terminals 8 present in the geographic area covered by the satellite 10 simultaneously receive, via a parabolic antenna 6 dedicated to satellite reception, the wave 5 transmitted. This antenna 6 is connected to the terminal via a coaxial computer link 7. The satellite decoding device present in the terminal 8 decodes the electromagnetic wave 5 to recreate the computer files initially coded. These files are then stored in a storage unit 9 of the terminal 8, which can be physically a traditional computer hard disk or any other digital storage medium. Thus all the terminals 8 present in the geographical area receiving the electromagnetic wave 5 simultaneously store the same files in their storage unit 9. And this, regardless of the number of terminals present in this geographical area.
Selon un aspect important de l'invention, les utilisateurs peuvent personnaliser le profil des documents multimédias numériques devant effectivement être stockés dans l'unité de stockage 9 du terminal 8. Dans ce cas, seuls les fichiers reconstitués selon le principe énoncé ci-dessus et correspondant au profil défini par l'utilisateur sont effectivement stockés dans l'unité de stockage 9 du terminal 8. Les fichiers ne correspondant pas à ce profil sont effacés au fur et à mesure qu'ils sont reçus par le terminal 8.According to an important aspect of the invention, the users can personalize the profile of the digital multimedia documents which must actually be stored in the storage unit 9 of the terminal 8. In this case, only the files reconstituted according to the principle stated above and corresponding to the profile defined by the user are effectively stored in the storage unit 9 of the terminal 8. The files not corresponding to this profile are erased as and when they are received by the terminal 8.
Si l'espace de stockage restant dans l'unité de stockage 9 du terminal 8 ne suffit plus, les fichiers stockés sont effacés automatiquement au fur et à mesure selon leur ancienneté afin de libérer de l'espace pour stocker de nouveaux fichiers reçus. Il sera cependant apprécié que l'utilisateur a la possibilité de marquer des fichiers stockés comme non-effaçables.If the storage space remaining in the storage unit 9 of the terminal 8 is no longer sufficient, the stored files are automatically erased progressively according to their age in order to free up space for storing new received files. It will however be appreciated that the user has the possibility of marking stored files as non-erasable.
Les Figure 2a, 2b et 2c illustrent le mécanisme d'une seconde étape d'un procédé selon l'invention. Cette étape correspond à la commande et à l'accès aux documents multimédias stockés dans le terminal. La Figure 2-a illustre le mécanisme permettant d'accéder à un fichier stocké dans l'unité de stockage du terminal 8. L'utilisateur peut rechercher un ou plusieurs de ces documents en utilisant par exemple une télécommande 12, un clavier ou une souris informatiques connectés au terminal de réception 8. La liste et le détail des documents stockés dans l'unité de stockage du terminal 8 sont affichés sur le moniteur 14 connecté au terminal 8. Ce moniteur 14 peut aussi bien être un téléviseur traditionnel qu'un moniteur informatique.Figures 2a, 2b and 2c illustrate the mechanism of a second step of a method according to the invention. This step corresponds to the order and access to multimedia documents stored in the terminal. Figure 2-a illustrates the mechanism making it possible to reach a file stored in the storage unit of the terminal 8. The user can seek one or more of these documents by using for example a remote control 12, a keyboard or a mouse computers connected to the reception terminal 8. The list and the details of the documents stored in the storage unit of the terminal 8 are displayed on the monitor 14 connected to the terminal 8. This monitor 14 can be either a traditional television set or a monitor computer science.
Une fois qu'il a choisi le document multimédia auquel il souhaite accéder et enregistré sa demande dans le terminal 8 à l'aide de sa télécommande 12, l'utilisateur a deux possibilités d'obtenir les droits d'accès à ce document sous la forme d'un fichier d'autorisation numérique:Once he has chosen the multimedia document to which he wishes to access and saved his request in the terminal 8 using his remote control 12, the user has two possibilities of obtaining the access rights to this document under the form of a digital authorization file:
Selon la Figure 2-b, le terminal 8 se connecte au centre serveur 1 par l'intermédiaire d'une liaison informatique distante 16, qui peut être par exemple une liaison téléphonique. Le terminal 8, après avoir été identifié par le centre serveur 1 envoie sa demande de droits d'accès au document multimédia souhaité sous la forme d'un fichier numérique. Le centre serveur 1 peut alors traiter la demande d'accès reçue.According to the Figure 2-b, the terminal 8 connects to the server center 1 via a remote computer link 16, which can for example be a telephone link. The terminal 8, after being identified by the server center 1 sends its request for access rights to the desired multimedia document in the form of a digital file. The server center 1 can then process the access request received.
Selon la Figure 2-b, l'utilisateur 18 téléphone à un serveur téléphonique 20 dédié, par une ligne de téléphone traditionnel 22. L'utilisateur 18 compose alors, à l'aide de son combiné téléphonique classique, son numéro d'identification suivi du numéro du document auquel il souhaite accéder. Après validation du serveur téléphonique 20, l'utilisateur 18 peut se déconnecter, sa commande est prise en compte. Cette commande qui est matérialisée par un fichier numérique est ensuite envoyée par le serveur téléphonique 20, via une liaison informatique 24, vers le centre serveur 1 de documents multimédias numériques. Le centre serveur peut alors traiter la demande d'accès reçue.According to Figure 2-b, the user 18 telephones a dedicated telephone server 20, by a traditional telephone line 22. The user 18 then dials, using his conventional telephone handset, his identification number followed the number of the document he wants to access. After validation of the telephone server 20, the user 18 can log off, his command is taken into account. This command, which is materialized by a digital file, is then sent by the telephone server 20, via a computer link 24, to the server center 1 of digital multimedia documents. The server center can then process the received access request.
Les Figure 3a et 3b illustrent le mécanisme d'une troisième étape d'un procédé selon l'invention, à savoir la réception des droits d'accès aux documents multimédias stockés dans le terminal. Se référant à la Figure 3-a, il sera noté que pour chaque commande reçue, le centre serveur 1 de documents multimédias génère une autorisation sous la forme d'un fichier numérique. Ce fichier est envoyé au dispositif informatique d'émission satellitaire de données numériques 3 par l'intermédiaire de la liaison réseau informatique terrestre à haut débit 2. Le fichier est dès lors codé et envoyé sous la forme d'une onde électromagnétique 4 au satellite 10 qui la renvoie sur la zone géographique qu'il couvre. Le terminal de réception satellite 8 de l'utilisateur à l'origine de la commande, reçoit cette onde 5 par l'intermédiaire de son antenne parabolique 6. Seul, le dispositif de décodage satellitaire présent dans le terminal 8 décode l'onde électromagnétique 5 pour recréer le fichier correspondant à l'autorisation d'accès en réponse à la com- mande effectuée par l'utilisateur.Figures 3a and 3b illustrate the mechanism of a third step of a method according to the invention, namely the reception of access rights to multimedia documents stored in the terminal. Referring to the Figure 3-a, it will be noted that for each command received, the server center 1 of multimedia documents generates an authorization as a digital file. This file is sent to the computer system for satellite transmission of digital data 3 via the high-speed terrestrial computer network link 2. The file is therefore coded and sent in the form of an electromagnetic wave 4 to the satellite 10 which returns it to the geographic area it covers. The satellite reception terminal 8 of the user at the origin of the command, receives this wave 5 via its parabolic antenna 6. Only the satellite decoding device present in the terminal 8 decodes the electromagnetic wave 5 to recreate the file corresponding to the access authorization in response to the command made by the user.
Se référant à la Figure 3-a, il sera noté que le fichier correspondant à l'autorisation permet au terminal 8 d'afficher ou de jouer le document multimédia numérique, déjà stocké dans l'unité de stockage 9 du terminal 8 et qui a fait l'objet d'une commande émise par l'utilisateur. Le document multimédia est alors affiché sur le moniteur 14 et/ou joué par le dispositif de restitution sonore. Referring to Figure 3-a, it will be noted that the file corresponding to the authorization allows the terminal 8 to display or play the digital multimedia document, already stored in the storage unit 9 of the terminal 8 and which has is the subject of a command issued by the user. The multimedia document is then displayed on the monitor 14 and / or played by the sound reproduction device.

Claims

Revendications claims
1. Procédé pour donner accès à un grand nombre d'utilisateurs à une collection de documents multimédias numériques, caractérisé par une émission par satellite de ladite collection de documents multimédias numériques sur une zone géographique donnée ; réception simultanée à l'aide de terminaux de réception de ladite collection de documents émise par satellite par tous les utilisateurs présents dans ladite zone géographique donnée; et stockage pour un accès ultérieur de documents multimédias numériques reçus par lesdits terminaux dans une unité de stockage associée à chacun desdits terminaux.1. Method for giving access to a large number of users to a collection of digital multimedia documents, characterized by a satellite transmission of said collection of digital multimedia documents over a given geographical area; simultaneous reception by means of reception terminals of said collection of documents transmitted by satellite by all the users present in said given geographical area; and storage for later access of digital multimedia documents received by said terminals in a storage unit associated with each of said terminals.
2. Procédé selon la revendication 1 , caractérisé en ce que : un profil d'intérêt prédéfini de l'utilisateur est associé au terminal de réception; et ledit stockage desdits documents multimédias numériques reçus se fait de façon sélective selon ledit profil d'intérêt de l'utilisateur, les documents multimédias numériques de ladite collection émise qui ne correspondent pas audit profil d'intérêt prédéfini n'étant pas stockés dans ladite unité de stockage.2. Method according to claim 1, characterized in that: a predefined interest profile of the user is associated with the reception terminal; and said storage of said received digital multimedia documents is done selectively according to said user interest profile, the digital multimedia documents of said transmitted collection which do not correspond to said predefined interest profile not being stored in said unit storage.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que lesdits docu- ments multimédias numériques stockés sont effacés automatiquement en fonction de leur ancienneté pour libérer de l'espace mémoire pour stocker d'autres documents de ladite collection.3. Method according to claim 1 or 2, characterized in that said stored digital multimedia documents are erased automatically as a function of their age to free up memory space for storing other documents from said collection.
4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé par la possibilité pour l'utilisateur de définir des critères d'effacement pour les do- cuments multimédias numériques stockés.4. Method according to any one of claims 1 to 3, characterized by the possibility for the user to define erasure criteria for the stored digital multimedia documents.
5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'accès par l'utilisateur à un document multimédia numérique particulier stocké dans son unité de stockage nécessite un fichier numérique d'autorisation d'accès audit document.5. Method according to any one of claims 1 to 4, characterized in that access by the user to a particular digital multimedia document stored in his storage unit requires a digital file authorization to access said document.
6. Procédé selon la revendication 5, caractérisé en ce que ledit fichier numérique d'autorisation d'accès audit document est transmis de façon sélective au terminal de l'utilisateur qui a fait une demande d'accès audit document. 6. Method according to claim 5, characterized in that said digital file for authorizing access to said document is selectively transmitted to the terminal of the user who has made a request for access to said document.
7. Procédé selon la revendication 6, caractérisé en ce que la demande d'accès à un document s'effectue à travers une liaison point-à-point entre l'utilisateur et un serveur gérant l'accès à la collection de documents multimédias numériques émise.7. Method according to claim 6, characterized in that the request for access to a document is carried out through a point-to-point link between the user and a server managing access to the collection of digital multimedia documents issued.
8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que plusieurs documents multimédias numériques sont émis en simultané par satellite, et en ce qu'on attribue à ces documents des niveaux de priorité en ce qui concerne leur vitesse de transmission. 8. Method according to any one of claims 1 to 7, characterized in that several digital multimedia documents are transmitted simultaneously by satellite, and in that these documents are assigned priority levels with regard to their speed of transmission.
PCT/EP2000/010598 1999-11-26 2000-10-27 Method for access to a collection of multimedia documents WO2001039499A1 (en)

Priority Applications (2)

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AU79234/00A AU7923400A (en) 1999-11-26 2000-10-27 Method for access to a collection of multimedia documents
EP00969557A EP1250809A1 (en) 1999-11-26 2000-10-27 Method for access to a collection of multimedia documents

Applications Claiming Priority (2)

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LU90478A LU90478B1 (en) 1999-11-26 1999-11-26 Method of accessing a hill of multimedia documents
LU90478 1999-11-26

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EP1250809A1 (en) 2002-10-23
AU7923400A (en) 2001-06-04
LU90478B1 (en) 2003-06-26
CN1192541C (en) 2005-03-09
CN1425250A (en) 2003-06-18

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