WO2001030084A1 - Systeme de transmission d'enregistrements de donnees numeriques - Google Patents

Systeme de transmission d'enregistrements de donnees numeriques Download PDF

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Publication number
WO2001030084A1
WO2001030084A1 PCT/EP2000/010355 EP0010355W WO0130084A1 WO 2001030084 A1 WO2001030084 A1 WO 2001030084A1 EP 0010355 W EP0010355 W EP 0010355W WO 0130084 A1 WO0130084 A1 WO 0130084A1
Authority
WO
WIPO (PCT)
Prior art keywords
subunit
data
unit
transmitted
stb2
Prior art date
Application number
PCT/EP2000/010355
Other languages
German (de)
English (en)
Inventor
Frank Hackenbuchner
Pierre DALLÜGE
Jörg BLAUMEISTER
Original Assignee
Media(Netcom) Aktiengesellschaft
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 Media(Netcom) Aktiengesellschaft filed Critical Media(Netcom) Aktiengesellschaft
Priority to AU11421/01A priority Critical patent/AU1142101A/en
Publication of WO2001030084A1 publication Critical patent/WO2001030084A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/083—Network architectures or network communication protocols for network security for authentication of entities using passwords
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H04N21/222—Secondary servers, e.g. proxy server, cable television Head-end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H04N21/222—Secondary servers, e.g. proxy server, cable television Head-end
    • H04N21/2225—Local VOD servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H04N21/23106—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving caching operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25866—Management of end-user data
    • H04N21/25875—Management of end-user data involving end-user authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
    • H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
    • H04N21/26241—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the time of distribution, e.g. the best time of the day for inserting an advertisement or airing a children program
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/4227—Providing Remote input by a user located remotely from the client device, e.g. at work
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
    • H04N21/44055—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-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
    • H04N21/47202—End-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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/475—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
    • H04N21/4753—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data for user identification, e.g. by entering a PIN or password
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network 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 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network 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 
    • H04N21/63—Control 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
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17336—Handling of requests in head-ends

Definitions

  • the present invention relates to a system for the transmission of digitized data sets, in particular film data.
  • Fig. 1 schematically the structure of the system according to a first embodiment
  • Fig. 2 a schematic section of the part of the system according to a second embodiment.
  • the system contains a central unit Z which has a central memory 1, a second memory 2 and an authentication memory 20.
  • a plurality of digitized films are stored in the second memory 2, which are also referred to below as digitized data records.
  • the central unit 1 further contains a control device 6 and preferably also an Internet connection I.
  • the system contains a plurality of subunits P1, P2, two of which are shown in the figure.
  • the subunits P1, P2 are connected to the central unit Z via lines VI, V2.
  • These lines VI, V2 can, for example, be made available via the Internet.
  • the lines VI, V2 are preferably so-called backbone lines with a large bandwidth.
  • the subunit P1 contains a film memory 3, in which a plurality of digitized films are contained.
  • the film memory 3 contains the same number or fewer films than the second memory 2 of the central unit Z.
  • the subunit P1 also contains a calculation device 7 for calculating the transmission time of the desired film and a transmission control unit 8 for controlling a time-delayed transmission in relation to the order of a film
  • the system also contains a plurality of end units STB1, STB2, STB3, three of which are shown in the figure.
  • Each end unit STB1, STB2, STB3 is connected to one of the subunits P1, P2 via a line L1, L2, L3 with a large bandwidth.
  • the lines L1, L2, L3 are preferably suitable for the IP (Internet Protocol). IP is a well-known standard for data transmission and is not described further here.
  • the lines L1, L2, L3 can be, for example, the television cable present in most households.
  • the lines L1, L2, L3 can, however, also be implemented by wireless transmission links.
  • the end units STB1, STB2, STB3 all have the same structure, so that only the structure of the end unit STBL is described below.
  • the end unit STBL contains a first memory 4 for storing transmitted data Movie data.
  • the end unit STBL contains a decoder 5 which can decode the digitized film data for display on a normal television set or computer monitor.
  • the end unit STBL contains a suitable interface for establishing a connection with the line L1. This can be a modem, for example.
  • the end unit STBL also contains a release device 11 which releases the playback of a film transferred to the first memory 4 for a predetermined time, for example 48 hours.
  • the first memory 4 has a FIFO buffer property, that is to say that the data already stored can be read out while further data are being stored.
  • the subunit STBL has an ordering device 10, with which a connection to the subunit Pl can be established via the interface and a film can then be ordered from the subunit Pl.
  • the central memory 1 of the central unit Z stores which end unit STBL, STB2, STB3 is connected to which subunit P1, P2. Each end unit STB1, STB2, STB3 can thus be clearly identified in the system.
  • a password that can be defined by him is stored for each user.
  • the user of the end unit STBL orders a desired film from the central unit Z.
  • the user must enter his password so that his authenticity can be checked by the system. For example, you may be asked to enter the password if the film you want is a paid film.
  • he can also specify up to what point in time the ordered film is to be transferred to its STBl end unit.
  • This order from the central unit Z can be carried out, for example, through the Internet via the Internet connection I. The order can thus be placed from any location and the user is not limited to an order from the location where his end unit STBL is located.
  • this password is immediately checked by the control device 6 by comparison with the password stored in the authentication memory 20. If the password is correct, the ordering process will continue. If the password is incorrect, the user is prompted to enter the correct password so that he can complete his order.
  • the control device 6 of the central unit Z determines on the basis of the information from the second memory 2 which subunit P1 the end unit STBL of the user is connected to.
  • the control device 6 uses the connection VI to instruct the subunit P1 to transmit the desired film to the end unit STBL.
  • the subunit P1 now checks whether the desired film is present in its film memory 3. If this is not the case, the subunit P1 requests the central unit Z to transmit the desired film to it, since all films that can be ordered are present in the central memory 1 of the central unit Z.
  • the subunit P1 now makes contact with the end unit STBL and transmits the desired film. This is possible because the end units STB1, STB2 are in a standby state and can therefore be addressed by the subunit P1.
  • the transmission of the film can be encrypted for security reasons. If the film to be transmitted is present, for example, in a format generated by the MPEG compression in the film memory 3 of the subunit P1, the entire film does not have to be encrypted. In this case, it is sufficient to encrypt certain important elements in the compressed data in order to render the image unusable.
  • This approach is based on the fact that MPEG compressions are based on interpolations, some of which come from keyframes that have to appear regularly in the film in order to produce a complete picture.
  • the computing device 7 of the subunit Pl determines for the film to be transmitted as a function of the predefined bandwidth of all connections L1, L2 between the subunit Pl and all the end units STB1, STB2 connected to it, the bandwidth just occupied by the subunit, and that part of the film to be transmitted continuously the remaining transmission time. This is transmitted to the sub-unit STBL so that it can be displayed to the user. Furthermore, the subunit Pl still transmits an enable signal which the transmitted film for a predetermined period of time, e.g. 48 hours, releases.
  • a predetermined period of time e.g. 48 hours
  • the transfer control unit 8 calculates for the film to be transferred, depending on the given bandwidth of all connections L1, L2 between the subunit Pl and all connected end units STB1, STB2, that of the subunit Pl just occupied bandwidth, the specified time and on the basis of further films requested for a specified time, the start time of the transmission of the one requested film such that the utilization of the lines L1, L2 is as even as possible. This ensures optimal use of the bandwidth.
  • the transmitted film can then be played by the end unit STBL. This is only possible as long as the release device 11 of the end unit STBL releases the playback. This release time is determined by the transmitted release signal. Alternatively, the release device can delete the stored film data from the first memory 4 of the end unit STBL after the predetermined time.
  • the order can also be sent directly to subunit P1 via ordering device 10 of end unit STBL. So that the authenticity of the customer can be determined, each of the subunits P1, P2 has a password memory 21. The passwords of all users of end units STB1-STB3 connected to the respective subunit P1, P2 are stored in this password memory 21. After the password has been checked by the transmission control unit 8, the ordered film is delivered in the same manner as described above when ordering via the central unit Z.
  • the line lengths of the connections L1, L2, L3 can be kept short and the load of the transmission is distributed to the subunits.
  • the costs for these lines L1, L2, L3 with a large bandwidth are lower than in the case in which only one central unit is provided which is connected directly to the end units STB1, STB2, STB3, and on the other hand is fast and reliable Transmission ensured.
  • a plurality of central units Z, Z 2 , Z 3 are provided, each having a central memory 1, a second memory 2 and one Authentication store 20 have.
  • Each of these central units Z x , Z 2 , Z 3 has a subunit 30 which controls the data transmission between the individual central units Zi, Z 2 , Z 3 via a central system Z 1; Z 2 , Z 3 connecting line L4 causes.
  • the line L4 is designed in particular as a radio or satellite connection or consists of a known line like a cable.
  • several central units Zi, Z 2 , Z 3 are networked or connected to one another.
  • the form of cross-linking is ring-shaped, star-shaped or another known form of cross-linking.
  • Pl and P2 can ⁇ a central unit Z, Z 2, Z 3 be provided in the form of a computer with a provider.
  • a central unit Zi and a subunit P1 can be provided next to one another at one location.
  • digital data records that cannot be supplied by the associated central unit Zi at the request of an end unit STB1, STB2 or STB3 are sent via the central unit Zi by a further central unit Z 2 or Z 3 via line L4 requested and fetched, the data transmission between the central units being controlled in the subunit 30.
  • the central systems Z in particular do not need to be locally close, since it is in particular possible to exchange the digital data records over existing backbone lines and over a large spatial distance.
  • the transmission of the digital data sets between the central systems Zi, Z 2 , Z 3 is transparent to the end units STB1, STB2, STB3, since they receive information that the requested data set must be obtained elsewhere and when it is available.
  • the system is not only a system for the transmission of digital data sets, but also a system for the distribution of digital data sets.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Human Computer Interaction (AREA)
  • Computer Graphics (AREA)
  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention concerne un système de transmission d'enregistrements de données numériques, en particulier de données cinématographiques, comprenant une unité centrale (Z), une pluralité d'unités secondaires (P1, P2) reliées à l'unité centrale (Z), chaque unité secondaire (P1, P2) contenant une première mémoire (3) servant à stocker plusieurs enregistrements de données, une pluralité d'unités terminales (STB1, ST2, STB3), chaque unité terminale (STB1, STB2, STB3) étant reliée avec l'une des unités secondaires (P1, P2) via une liaison (L1, L2, L3). L'unité centrale (Z) présente une seconde mémoire (2) dans laquelle il est enregistré pour chacune des unités terminales (STB1, STB2, STB3) avec laquelle des unités secondaires (P1, P2) elle est reliée. Ladite unité centrale présente un dispositif de commande (6) qui, en réaction à la demande de transmission de données soumise, détermine l'enregistrement de données à transmettre et l'unité terminale destinataire (STB1), qui détermine l'unité secondaire (P1) reliée à l'unité terminale destinataire (STB1) grâce à l'utilisation des données contenues dans la deuxième mémoire (2), et qui donne l'ordre à l'unité secondaire (P1) en question de transmettre l'enregistrement de données à transmettre à l'unité terminale destinataire (STB1).
PCT/EP2000/010355 1999-10-21 2000-10-20 Systeme de transmission d'enregistrements de donnees numeriques WO2001030084A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11421/01A AU1142101A (en) 1999-10-21 2000-10-20 System for transmitting digitized data sets

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29918600.8 1999-10-21
DE29918600U DE29918600U1 (de) 1999-10-21 1999-10-21 System zur Übertragung von digitalisierten Datensätzen

Publications (1)

Publication Number Publication Date
WO2001030084A1 true WO2001030084A1 (fr) 2001-04-26

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AU (1) AU1142101A (fr)
DE (1) DE29918600U1 (fr)
WO (1) WO2001030084A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1283649A1 (fr) * 2001-08-08 2003-02-12 Siemens Aktiengesellschaft Procédé et appareil pour transfert cellulaire améliorée dans un système de transmission de données pour les transmissions sur la liaison descendante
WO2003015441A1 (fr) * 2001-08-08 2003-02-20 Siemens Aktiengesellschaft Procede et dispositif de transfert efficace dans un systeme de transmission de donnees pour des transmissions de donnees en direction descendante

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EP0658055A1 (fr) * 1993-12-09 1995-06-14 International Business Machines Corporation Distribution multimédia sur réseaux étendus
US5442390A (en) * 1993-07-07 1995-08-15 Digital Equipment Corporation Video on demand with memory accessing and or like functions
US5745837A (en) * 1995-08-25 1998-04-28 Terayon Corporation Apparatus and method for digital data transmission over a CATV system using an ATM transport protocol and SCDMA
WO1999030493A1 (fr) * 1997-12-09 1999-06-17 Cogent Technology, Inc. Procede et systeme d'insertion de donnees individualisees dans des signaux de television
US5924013A (en) * 1997-09-03 1999-07-13 Guido; Mary M. Method and apparatus for transmitting motion picture cinematic information for viewing in movie theaters and ordering method therefor

Patent Citations (5)

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US5442390A (en) * 1993-07-07 1995-08-15 Digital Equipment Corporation Video on demand with memory accessing and or like functions
EP0658055A1 (fr) * 1993-12-09 1995-06-14 International Business Machines Corporation Distribution multimédia sur réseaux étendus
US5745837A (en) * 1995-08-25 1998-04-28 Terayon Corporation Apparatus and method for digital data transmission over a CATV system using an ATM transport protocol and SCDMA
US5924013A (en) * 1997-09-03 1999-07-13 Guido; Mary M. Method and apparatus for transmitting motion picture cinematic information for viewing in movie theaters and ordering method therefor
WO1999030493A1 (fr) * 1997-12-09 1999-06-17 Cogent Technology, Inc. Procede et systeme d'insertion de donnees individualisees dans des signaux de television

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1283649A1 (fr) * 2001-08-08 2003-02-12 Siemens Aktiengesellschaft Procédé et appareil pour transfert cellulaire améliorée dans un système de transmission de données pour les transmissions sur la liaison descendante
WO2003015441A1 (fr) * 2001-08-08 2003-02-20 Siemens Aktiengesellschaft Procede et dispositif de transfert efficace dans un systeme de transmission de donnees pour des transmissions de donnees en direction descendante

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AU1142101A (en) 2001-04-30

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