WO2007101315A1 - Systeme et procede de production, d'envoi et d'affichage d'informations - Google Patents

Systeme et procede de production, d'envoi et d'affichage d'informations Download PDF

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Publication number
WO2007101315A1
WO2007101315A1 PCT/BR2006/000040 BR2006000040W WO2007101315A1 WO 2007101315 A1 WO2007101315 A1 WO 2007101315A1 BR 2006000040 W BR2006000040 W BR 2006000040W WO 2007101315 A1 WO2007101315 A1 WO 2007101315A1
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WO
WIPO (PCT)
Prior art keywords
information
display
layer
production
fact
Prior art date
Application number
PCT/BR2006/000040
Other languages
English (en)
Inventor
Marcelo Alvarenga De Almeida
Hugo Marcelo Mendes Rodrigues
Original Assignee
Marcelo Alvarenga De Almeida
Hugo Marcelo Mendes Rodrigues
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 Marcelo Alvarenga De Almeida, Hugo Marcelo Mendes Rodrigues filed Critical Marcelo Alvarenga De Almeida
Priority to PCT/BR2006/000040 priority Critical patent/WO2007101315A1/fr
Publication of WO2007101315A1 publication Critical patent/WO2007101315A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/565—Conversion or adaptation of application format or content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/52—Network services specially adapted for the location of the user terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services

Definitions

  • the present invention refers to a system and a method for production, sending and display of information, particularly digital information for display or diffusion in specific receiving locations. Description of the prior art
  • Systems for sending of information are widely known, particularly video information, aiming at distribution thereof and a number of image and sound distribution points, thereby making possible to diffuse information de- sired (such as advertising and others) only to some spectators in particular (segmentation). All of these systems aim at the distribution of this information with dynamism, low cost and contents renewal facility.
  • Audio and video programs are transmitted from a central station and received by a series of receiving elements, preferably in the manner of TV monitors.
  • Programs to be transmitted are customized in function of the establishment in which receivers (video monitors) are located and, due to the location of monitors with product's sale points, persuasive power of publicity messages is higher, as it reaches the consumer when he/she is already shopping and, therefore, more receptive to consume any other type of product.
  • the system revealed in this US patent comprises an information distribution station transmitting the programming to be diffused, a number of receivers which receive the information transmitted, means for listing pro- grams or information to be displayed to message addressees and displays (preferably TV monitors and projectors) enabling to visualize either information or messages transmitted. Control of information transmitted is performed from the distribution station.
  • promotional and commercial films are transmitted through a means of communication to a series of commercial establishments positioned, for example, around a country.
  • Signal transmitted is received in each of these establishments and visualized thereafter in one or more monitor positioned therein.
  • An interesting resource of this system is the possibility of the user located in the distribution station to request a transmission of some par- ticular programs, as he/she desires or deems convenient (there is a manager that can form program lists for each establishment, in function of parameters such as audience to be reached, location where the programming is diffused, etc).
  • the system preferably uses at least one satellite for sending of digital information and, due to this characteristic, it presents a high technical complexity compared with the system now developed.
  • the present invention has for objective a system for production, sending and display of information, particularly digital information for display and diffusion in specific receiving locations, which enables adequacy of diffu- sion of a large programming to a wide range of commercial establishments, each of them with particularities of location, attending audience etc. Additionally, all of this information should be transmitted with facility, speed and low cost, without requiring any infrastructure installation, specially for such information (use of satellites, implementation of a dedicated network etc.), which would significantly increase implementation and operation costs of that system. Moreover, a method for production, sending and display of digital information, particularly for use in above-idealized system is further targeted. Brief description of the invention
  • a system for production, sending and display of information for sending information from at least one distribution station to at least one final display for visualization, the information flow from the production of digital information up to visualization of the information at the display being made feasible through a four-layer structure, comprising a first layer for information production, a second layer for transmission of information produced, a third layer for reception and correct forwarding of information and a fourth layer for information diffusion.
  • a method for production, sending and display of digital information particularly for use in a system for production, sending and display of messages as de- scribed above, comprising the following stages:
  • the present invention has the advantage of enabling a system for production, sending and display of information such as video/audio etc., allowing diffusion of advertising in a segmented manner, in function of the type of location in which it will be diffused, and considering consumer's / spectator's profiles, presenting a low cost of installation, maintenance and operation, as it uses equipment operating according to PC platform and using Internet as the preferred network for transmission of digital information.
  • Figure 1 is a first schematic view of the system for production, sending and display of information under the present invention, where its main constituting elements can be clearly seen;
  • Figure 2 is a partial schematic view of the system for production, sending and display of information under the present invention, where the components necessary for generation and sending of information are de- tailed;
  • Figure 3 is a schematic view of the four operation layers of the system for production, sending and display of information under the present invention.
  • the present system for production, sending and display of information 1 is primarily suitable to transmission of information (such as publicity messages, announcements, varied programming, motion-pictures, sounds etc.) from a distribution station 3, parameterized in function of characteristics of each location in which it will be diffused, as well as the spectators it search to reach.
  • information such as publicity messages, announcements, varied programming, motion-pictures, sounds etc.
  • Each company or place having a poster, billboard, radio, TV, board, display, folder, kiosk etc., which needs to distribute or renew contents is, therefore, a potential customer for the product.
  • Some segments where the present system 1 is applied include: retail shop networks, supermarkets, banks, cinema networks (advertising), shopping centers, drugstores, video- cassette rental shops, bookshops, airports, airline companies, bus companies, schools, hospitals, clinics, clinical analysis labs, stadiums, playhouses, churches, museums, road signaling, federal police, police stations etc.
  • the present invention refers to a system for production, sending and display of information, having for objective to transmit images and sounds to be displayed or played in a set of receiving locations.
  • This system is based on a four-layer structure where a first layer
  • a second layer 20 has the function of transmitting digital information produced, a third layer 30 for reception and correct forwarding of information and a fourth layer 40 for diffusion of information.
  • the system for production, sending and display of information 1 comprises essentially one hardware and at least one software which are able to encode information in the manner of video, audio or text, converting it into computer files to be distributed through physical means of a network (preferably Internet, a LAN, WAN or any other network configuration being allowed as well) according to criteria directing files to specific points of this network which are identified by an IP (Internet Protocol) number.
  • a network preferably Internet, a LAN, WAN or any other network configuration being allowed as well
  • IP Internet Protocol
  • the system 1 decodes the files received, converting them into information again, with the same format as that of the origin, to be displayed or played in electronic devices, such as TV or CRT Monitor, TV or Plasma Monitor, TV or LCD Monitor, TV or LED Panel, or any other device able to display or play original information.
  • electronic devices such as TV or CRT Monitor, TV or Plasma Monitor, TV or LCD Monitor, TV or LED Panel, or any other device able to display or play original information.
  • the system 1 comprises at least one distribution station 3, which is operatively associated with at least one digital information generating unit 2 and at least one final display for any visualization 8 (e.g.: a television set, projector or monitor).
  • any visualization 8 e.g.: a television set, projector or monitor.
  • connection among these components is carried out through an information network 5 which, as mentioned above, is preferably but not man-worthyly the Internet.
  • At least one information receiving unit 6 is provided, which is operatively associated with the distribution station 3 and the display 8, operating as a connecting link among them.
  • At least one converting element 7 is provided, enabling conversion of digital information into a format which may be reproduced by display 8. Converting elements will not be required only when the own display 8 has said elements or if it does not need any conversion to enable information to be reproduced.
  • Digital information generating unit 2 Digital information generating unit 2
  • Digital information generating unit 2 has the function of receiving images and sounds to be transmitted, convert them into digital information files and send them via network to the distribution station 3.
  • unit 2 corresponds to a set of peripheral equipment for audio/video reproduction and a computer provided with at least one specific software for digitizing and sending of digital information. Therefore, digital information preferably refers to audio and/or video digitized signals, which often can represent any other types of signals, as required or desired.
  • the computer is basically a PC microcomputer with operating system (preferably but not exclusively Microsoft Windows XP® or higher) having a board installed for image capture.
  • operating system preferably but not exclusively Microsoft Windows XP® or higher
  • Preferred configuration of an unit 2 is:
  • the unit 2 should comprise at least one software to enable digitalizing of information.
  • Microsoft ® Windows Media Encoder 9 Series ® or higher is used, but obviously any other necessary or desirable software can be used, provided that it is functional.
  • Varied equipment for audio/video reproduction is connected with this computer through connectors at video inlets of the capture board, which may operate in the following formats: Beta Digital, Beta SP, DVD, VHS, Mini-
  • Such equipment can be connected through several types of interfaces and protocols which usually are provided in it: composed video, S-video, component video, SDI, DVI etc.
  • the capture board When a digital Beta tape or a DVD disk, for example, containing a video is inserted and played in the respective reproduction equipment, the capture board, together with the Windows Media Encoder® software, encode the frame-to-frame contents, converting it into a computer file. This process is called encoder or encoding.
  • the unit 2 is connected with the network 5 (preferably Internet).
  • the network 5 preferably Internet
  • unit 2 should be connected with a 10/100 Mbps Switch or Hub network, which in turn is connected with some Internet service (DSL or cable) through a modem cable.
  • DSL Internet service
  • an executable program which also is part of unit 2 is used.
  • the "MediaUpload.exe” program is used, written in 6.0 Borland Delphi programming, which uses FTP (File Transfer Protocol) protocol and a TCP/IP network (LAN, WAN or Internet) to make the file transfer up to station 3.
  • FTP File Transfer Protocol
  • TCP/IP TCP/IP network
  • This software is preferred as it uses a user-friendly "drag'n drop” type interface, simply dragging the file to be transferred and release it in the white rectangle inside the window. At this moment, users are requested to give information regarding the file to be sent. After filling this information, the file transfer process is automatically initiated. The file selected is then copied to the station 3 inside a folder indicated in the configuration screen (not illus- trated).
  • the program creates automatically in station 3, inside the same folder, a text file (.txt extension) with the same name of the file transferred.
  • This file contains reference information on the contents, one in each line, in the following order:
  • the distribution station 3 is the main component of the system 1 , and constitutes a hardware (microcomputer) and at least one, but preferably a set of software having as objective to control the operation of the system 1. From the record of distribution points (where displays 8 are located), passing through the schedule of programming of the content in each point/display to the management of the display confirmation by point/display.
  • the microcomputer of the distribu- tion station 3 should be able to manage the entire process of generation and sending of digital information and, for such a purpose, it should have the dimensioned capacity by considering several factors: number of information reception units 6 and displays 8 connected and the contents renewal flow (that is, of digital information sent).
  • Distribution station 3 should be located in a region provided with wide bands, as the entire content is transmitted by using a network (Internet, LAN or WAN) as a physical means.
  • a network Internet, LAN or WAN
  • its microcomputer is based in PC platform and has the following configuration:
  • computer of the distribution station 3 is located in a safe place and provided with unlimited network bands (called Data Centers), due to importance thereof.
  • Data Centers network bands
  • softwares of the distribution station 3 those which are typical for servers are chosen, such as Windows 2003 Server ®, or any other subsequent version, or further another equivalent system. It is indispensable that the "FTP server” service is installed and duly configured, since the operation of the circuit is based on this protocol. Other highly important service is the "terminal server". This technology allows the remote access for operation and maintenance of the distribution station 3 computer without being physically present in the Data Center where it is installed.
  • this invention module basically requires at least one computer program enabling the correct operation thereof.
  • the first program is called “MediaScanner.exe” and it is a software written in Borland Delphi 6.0 programming language which operates as a service and monitors on a permanent basis, if "Temp” folder, a subfolder of the folder configured for FTP service upload received any new text file (figure 6). It should be pointed out that all files sent by the unit 2 come in a tempo- rary folder of the station 3 called "Temp”.
  • the program In monitoring this folder, the program immediately detects the arrival of a new content file. At this time, the corresponding file text is read and the system identifies the unit 2 responsible for the sending, as well as the campaign or reason of the contents. For system 1 security, the text file appears in above-mentioned folder "Temp" only if the content file has came in full. Finally, the program moves both the text and the content files, from the temporary folder to the upload folder.
  • Manager is a data bank application with remote access via Terminal Server customer software (such as the Microsoft ® “RemoteDesk- top.exe” application).
  • Terminal Server customer software such as the Microsoft ® “RemoteDesk- top.exe” application.
  • the Manager is basically composed by the following modules:
  • this record is performed whenever a new display unit (place where one or more displays 8 will be installed) has to be included in the circuit.
  • each display unit can further have several display locations (places where displays 8 are installed - as a rule, each place contains one display 8).
  • display locations associ- ated with a certain display unit are recorded.
  • this report serves as a verification of the programming grid, in addition to informing the remaining availability in each programming grid.
  • this report indicates to each time of each display location if the grid content has been displayed or not. If negative, the reason is listed for statistic purposes.
  • "Manager" software can work in two manners: on-line or off-line. In on-line mode, so far as the grid is recorded the entire process of grid diffusion by the circuit is initiated. In the off-line mode, nothing happens while the content programming is recorded. After the completion of programming, simply change into the on-line mode in order to have the entire circuit updated at once.
  • a text file is generated within the upload folder of station 3, such as "Units” subfolder, "999" subfolder (where 999 is the unit number to which the content is being scheduled).
  • the name of text file created is a 8-digit sequential number completed with leading zeros, with ".txt” extension. Configuration of this file is preferably the following: 1) Number and name of display unit to which the content has been scheduled
  • Information receiving unit 6 is the system 1 module that is physically located in the display unit (establishment) to where one desires to transmit the content (digital information). Its main function is to route the con- tents and programming sent by the station 3, directing them to reach the receiving locations.
  • the information receiving unit comprises a microcomputer hardware (preferably, but not mandatorily based on PC platform) and a software having for objective to receive and resend to receiving locations both the contents and its respective programming of dates and times of display.
  • Unit 6 computer can be much more simplified in comparison with that presented by station 3 and, preferably, its realization is as follows:
  • unit 6 uses preferably the Windows XP Professional® operating system or any other subsequent version. It is indispensable that the "remote access to the desktop" service is installed and duly configured. This technology allows the remote access for operation and maintenance of unit 6 without needing to be physically present in the unit where the contents will be displayed.
  • this invention module basically needs a program, such as "UnitServer.exe” in order to operate.
  • This is a software written in Borland Delphi 6.0 programming language, operating as a service that periodically monitors if any new text file (figure 10) has appeared in FTP service folder of station 3 corresponding to the current unit. Aiming to facilitate the identification, each unit 6 has a sole identification number, which must have been previously recorded in station 3.
  • the unit 6 When the unit 6 detects new text files containing programming grid in its folder monitored in station 3, then it immediately requires the download of this file to FTP server of the station. After completion of the download, the text file is received in the own unit 6, in a temporary folder (called Temp), which in turn is within the folder configured in the field "Local Folder” in “Configurations” tab, subtab "FTP Server".
  • Temp a temporary folder
  • unit 6 reads this file with the purpose of identifying which digital information (video, audio, etc.) are included in this programming and in which date and times these video/audio etc. should be played. For each video/audio identified, unit 6 searches in the local HD within the "Local Folder” and checks (i) if the same already exists, (ii) if it has the same size and (iii) if it has the same date/time of creation and the last modification (controlled by the operating system of the computer). If positive, the text file is moved from the "Temp” folder to another sequence of subfold- ers of the "Local Folder" referenced as "Locations/999" (where 999 is the number of the location to which the content is being scheduled).
  • Converting element 7 is the system 1 module which is physically installed near the place where the exhibition display 8 is found, as it needs to be connected therewith, which is performed preferably by means of a cable. Its main function is to generate the image corresponding to video/audio etc., which was transmitted via FTP in the manner of file by the previous layers of the invention.
  • One or more converters 7 may be present in the receiving locations (establishments), depending on the necessary number of display devices with different contents and programming.
  • the converting element further comprises a microcomputer, preferably based on PC platform.
  • the several converters 7 (corresponding to the number of displays 8) are locally interconnected through a Switch or Hub type network equipment, with a 10/100 Mbps speed.
  • converter 7 uses a software having as objective to search, in unit 6, both the content and its respective programming of dates and times of display.
  • the microcomputer used in converter 7 needs a processor which is sufficiently rapid to search both programming and content in unit 6 and play the video/audio etc. which may be in Standard Definition or High Definition format, at the pre-established dates and times.
  • This hardware is preferably composed by: ⁇ 1 Pentium IV 2.4 GHz processor - 512 Mb RAM ⁇ 40Gb HD ⁇ 10/100 Mbps network board
  • converter 7 needs an operating system, and preferably Windows XP Professional® or any other subsequent version is used. It is indispensable that the "remote access to the desk- top” service is installed and duly configured. This technology allows the remote access for operation and maintenance of converter 7 without having a technician physically present in unit where the contents will be displayed.
  • this invention module basically needs a computer program in order to become functional.
  • the program used is the "Plaver.exe”, which is a software written in Borland Delphi 6.0 programming language, whose main objective is to store the programming sent to it by previous layers in order to display it thereafter.
  • the program presents in the interface a window with three important divisions: ⁇
  • the first portion of the converter 7 window presents dates and times which have already a programming stored;
  • the second party presents a playlist of video/audio etc. to be played at the date and time selected in the first portion;
  • the third division of the window presents a time line detailing the play- list in execution and offers controls to initiate a playlist manually, in order to interrupt the exhibition of a video/audio, etc., and also controls to advance to the next video/audio etc,, or return to the previous video/audio etc.
  • Another characteristic of the converter 7 is that it has two modes of operation, namely: Automatic and Manual.
  • automatic mode the own converter 7 triggers the video/audio etc. display when the internal clock (figure 14) reaches some preprogrammed date and time.
  • the internal clock is updated on a periodical basis with atomic clocks available from Internet, thereby maintaining all converters 7 in synchronism.
  • a video/audio etc. is triggered only when the user intentionally commands by pressing the button "Play" located in the command bar of the program.
  • the most usual control is to switch on and switch off displays 8 connected therewith. But it is also possible to control specific functions of each equipment, provided that said equipment has one of the interfaces mentioned above, and it is duly docu- merited in its manuals.
  • the converter 7 im- mediately will move the new TXT files from this monitored folder to a folder named "99-99-9999" (where 99-99-9999 is the date in which the video/audio etc. should be played, obtained by the reading of the third line of TXT file) located within the folder configured in "Local Folder" field.
  • the converter 7 also checks if any video/audio etc. scheduled within the TXT file moved is not present in its "Local Folder". Should any file be missing, the converter 7 triggers immediately a copy of the file present in unit 6 folder to the "Local Folder" of converter 7, thereby assuring the full operation of the circuit.
  • the converter 7 further performs a register to confirm that the playlists programmed have been displayed. That is, whenever the converter 7 executes a playlist, either in automatic or manual mode, and the display occurs in full, it records a TXT file containing the date and time the display began. This file is recorded through local network, directly in "Confirmed" folder of the unit 6. This folder is a subfolder of the folder configured in the "Folder in Unit Server” field. Unit 6, in turn, monitors this folder and periodically sends, via FTP, to the station 3 the confirmation files which occasionally appear therein. When receiving these files, the station 3 identifies in the data bank the corresponding schedule and registers the diffusion confirmation, making it available for occasional future consulting.
  • the invention comprises one unit 2 and a station 3, with which several receiving units 6 are associated. And one or more sets of converter and display (7,8) can be connected with each receiving unit. Additionally, any other number of such equipment can be provided, without excluding the resulting system 1 from the protecting scope of claims attached herewith.
  • the system for production, sending and display of information 1 under the present invention is based on a structure operating in four layers, in respect of digital information worked out (they make viable its production, sending and display).
  • the first layer 10 is that in which the content pro- duction and programming occur
  • the second layer 20 has the function of transmitting both the content and the programming grid (digital information) between station 3 and unit 6
  • the third layer 30 has the function of receiving all digital information and route it up to the receiving location (establishment)
  • the fourth layer 40 is responsible for displaying the contents according to programming received in display 8.
  • the first layer 10 is the layer of production of digital information, such as video/audio, etc., which is performed by the digital information generating unit 2, managed and received by the distribution station 3. Therefore, unit 2 and station 3 corresponds to the first invention layer.
  • the fourth layer 40 is the diffusion of the contents (video/audio, etc.) according to the programming performed.
  • layers (10, 20, 30, 40) be scaled, i.e., a certain layer can exist only if the previous layer exists.
  • the present invention refers to a method for produc- tion, sending and display of digital information, particularly for use in the system 1 now defined, comprising the following stages:

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

L'invention concerne un système de production, d'envoi et d'affichage d'informations, en particulier d'informations numériques, permettant d'envoyer des informations à partir d'au moins un poste de distribution (3) jusqu'à au moins un écran de visualisation final (8). Le passage des informations numériques de la production à la visualisation sur l'écran (8) se fait par l'intermédiaire d'une structure à quatre couches, la première couche (10) servant à la production d'informations, la deuxième (20) à la transmission des informations produites, la troisième (30) à la réception et à la bonne retransmission des informations, et la quatrième (40) à la diffusion de ces informations. L'invention concerne également un procédé de production, d'envoi et d'affichage d'informations.
PCT/BR2006/000040 2006-03-06 2006-03-06 Systeme et procede de production, d'envoi et d'affichage d'informations WO2007101315A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/BR2006/000040 WO2007101315A1 (fr) 2006-03-06 2006-03-06 Systeme et procede de production, d'envoi et d'affichage d'informations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR2006/000040 WO2007101315A1 (fr) 2006-03-06 2006-03-06 Systeme et procede de production, d'envoi et d'affichage d'informations

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WO2007101315A1 true WO2007101315A1 (fr) 2007-09-13

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003995A1 (fr) * 1992-08-07 1994-02-17 Nbl Communications, Inc. Reseau de distribution video
WO1996008113A1 (fr) * 1994-09-06 1996-03-14 Bylon Company Ltd. Systeme de distribution video destine a un point d'achat

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003995A1 (fr) * 1992-08-07 1994-02-17 Nbl Communications, Inc. Reseau de distribution video
WO1996008113A1 (fr) * 1994-09-06 1996-03-14 Bylon Company Ltd. Systeme de distribution video destine a un point d'achat

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HARRISON J V ET AL: "Using wireless networks to enhance narrowcasting in public spaces", CONSUMER COMMUNICATIONS AND NETWORKING CONFERENCE, 2004. CCNC 2004. FIRST IEEE LAS VEGAS, NV, USA 5-8 JAN. 2004, PISCATAWAY, NJ, USA,IEEE, 5 January 2004 (2004-01-05), pages 600 - 604, XP010696963, ISBN: 0-7803-8145-9 *

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