WO2001072043A1 - Transmission de donnees video sur un reseau de telecommunications - Google Patents

Transmission de donnees video sur un reseau de telecommunications Download PDF

Info

Publication number
WO2001072043A1
WO2001072043A1 PCT/GB2001/001192 GB0101192W WO0172043A1 WO 2001072043 A1 WO2001072043 A1 WO 2001072043A1 GB 0101192 W GB0101192 W GB 0101192W WO 0172043 A1 WO0172043 A1 WO 0172043A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
video
communications network
transmitting
analogue
Prior art date
Application number
PCT/GB2001/001192
Other languages
English (en)
Inventor
Guy Alex Wolstenholme
Joseph Allan Sharpe
Ben Mark Wolstenholme
James Maurice Bull
Tobias James Younger
Original Assignee
Live Transmission Limited
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 Live Transmission Limited filed Critical Live Transmission Limited
Priority to AU40888/01A priority Critical patent/AU4088801A/en
Publication of WO2001072043A1 publication Critical patent/WO2001072043A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • 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
    • 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
    • H04L65/75—Media network packet handling
    • H04L65/762—Media network packet handling at the source 
    • 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
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/2187—Live feed
    • 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
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2381—Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4381—Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells
    • 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
    • H04N21/643—Communication protocols
    • H04N21/64322—IP

Definitions

  • the present invention relates to transmitting video data over a communications network, and additionally, although not essentially, to transmitting audio data.
  • Known systems for transmitting live video and audio signals for broadcast require cumbersome and expensive equipment.
  • the size of the equipment and the potential financial loss if the equipment is damaged means that producers are reluctant to take the equipment to remote and potentially dangerous locations and so many events which would be of interest to viewers are unable to be broadcast.
  • the existing equipment also requires a team of people to film and transmit the images and sound, which adds to the overall cost of producing a broadcast.
  • An object of the present invention is to provide a system which is portable and relatively cheap but capable of transmitting video data of acceptable image quality and frame rate.
  • Embodiments of the present invention are intended to be portable, easy to set up and use so can essentially be regarded as a one person kit.
  • a system for transmitting video data over a communications network including: apparatus for supplying an analogue video signal; a conversion component for converting the analogue video signal into digital video data; a streaming component for producing a data stream using the digital video data, and a transmitting component for transmitting the stream over the communications network.
  • video data refers to image data in general.
  • the transmitted stream is received by a broadcasting component for transmitting the stream data to one or more receivers over the communications network.
  • the system further includes an identifier component for transferring data identifying the broadcasting means.
  • the identifying data may include an Internet Protocol (IP) address and the broadcasting component can include a server associated with the IP address.
  • IP Internet Protocol
  • the identifying data is preferably transferred using File Transfer Protocol (FTP) means.
  • FTP File Transfer Protocol
  • the streaming component preferably includes portable satellite communication apparatus.
  • the portable satellite communication apparatus may include Nera World
  • the streaming component may further include ISDN modem apparatus.
  • the ISDN modem apparatus may include a Psion Dacom Gold Card ISDN modem.
  • the conversion component may include a video adapter with analogue to digital conversion capabilities, such as a USB Adapter.
  • the streaming component means may include a portable computer, preferably a laptop model and additionally or alternatively may include a data compression component.
  • the data stream produced is preferably usable with QuickTimeTM or RealNetworksTM software.
  • the portable computer executes Sorenson BroadcasterTM software or RealProducerTM Plus 8 software.
  • the analogue video signal apparatus may be a video camera.
  • Audio signal data may also be produced, converted and transmitted with the video data.
  • a method of transmitting video data over a communications network including steps of: supplying an analogue video signal; converting the analogue video signal into digital video data; producing a data stream using the digital video data, and transmitting the stream over the communications network.
  • FIG. 1 illustrates schematically a system according to a preferred embodiment.
  • a video camera 11 is used to capture images.
  • the camera is preferably a digital camera such as a Sony PD150, capable of producing analogue video signals as well as digital video signals.
  • the camera also includes a microphone and is capable of producing audio signals.
  • the camera is fitted with conventional video and audio leads for transferring the analogue video and audio signals to a portable laptop computer 12, preferably an Apple Macintosh G4 Titanium PowerBook.
  • the Applicant considers the G4 Titanium PowerBook to be the most powerful and suitable portable computer available in the marketplace, although a less powerful machine such as a G3 PowerBook could be used.
  • the camera and computer can be powered by rechargeable batteries.
  • the laptop computer 13 is fitted with a video adapter (shown schematically as 17) , preferably an Interex XLR8 Interview TM USB video adapter, into which the video lead is plugged.
  • the audio leads are connected via a mini-jack adapter to the MIC socket of the computer 13.
  • the USB video adapter 17 includes circuitry for converting the analogue video and audio input into digital video and audio data which can be used by the laptop computer 13.
  • the laptop computer 13 executes "Sorenson Broadcaster” TM software 18 produced by Sorenson Vision Inc. or "RealProducerTM Plus 8" software produced by RealNetworksTM Inc.
  • the Sorenson software is a live video and audio broadcasting tool created for use with Apple Computers' QuickTimeTM (version 4.1 or higher).
  • RealNetworks TM software is a live video and audio broadcasting tool created for use with RealPlayer G2 or later.
  • the software 18 is capable of compressing video and/or audio data and configuring it for live streaming on a variety of networks, including the Internet.
  • the streams produced by Sorenson Broadcaster can be played on
  • the main window of the Sorenson Broadcaster TM or RealProducer TM Plus 8 software displayed on the screen of the computer should preview the output of the video camera and monitor the microphone of the camera.
  • the "Sources” menu of the Sorenson software or the “Options” menu of RealProducer Plus 8 is used to set audio and video inputs as follows:
  • Audio source Device: built-in
  • Input sound in Video source: Digitiser: built-in, Input: composite
  • the Sorenson Broadcaster TM and RealPlayer TM Plus software connect to the Internet when executed.
  • the Internet settings of the laptop 13 are set as follows: TCP/IP settings should read:
  • Remote Access settings should read as follows (it will be understood that these details are normally specific to the Internet Service Provider being used and could vary) :
  • This configures ISDN card to dual ISDN when using the Glocom Communicator.
  • the parameters in the "Settings" menus of the Sorenson Broadcaster software are set as follows: Settings/Quality/
  • Audio Compression... Compressor: Qualcom Purevoice
  • Compressor...Options both unchecked when using Nera World Communicator, Cycle Intra Macroblocks checked when using Glocom Gemini-128 Communicator Size: 240 x 180
  • Unicast Receiver's IP address corresponds to the IP address for the Streaming Server, e.g. Globix.
  • Video Dimensions Width 240 Height: 180 Page 3: RealMedia Click Information: Relevant title and copyright information inputted
  • Page 4 File Type: Single Rate Page 5: Target Audience: Click ISDN when using Nera
  • Page 6 Audio Format Voice only Page 7
  • Video Quality Smoothest Motion Video Page 8
  • Media Server corresponds to RealSystems
  • Server 8 settings e.g. provided by Globix
  • the parameters given above are the optimum settings when using Sorenson Broadcaster TM or RealProducer TM Plus 8 with either the Nera World Communicator or Glocom Gemini- 128 Communicator. It will be understood by those skilled in the art of streaming video compressions that corresponding settings can be configured as new hardware and software becomes available which allows these rates to increase .
  • the portable computer 13 is also fitted with an ISDN PCMCIA modem card (shown schematically as 19) , preferably Psion Dacom Gold, which is capable of transferring data at up to 128 kilobits per second at the dual ISDN standard.
  • the ISDN card 19 is connected via a line 14 to a portable satellite communications device 15, either the Nera World Communicator or Glocom Gemini-128 Communicator.
  • the Nera World Communicator is lightweight and compact and can transmit data at 64 kbps at a variable rate Internet protocol service for virtually global Internet communication using satellites.
  • the Glocom Gemini-128 Communicator is lightweight and compact and can transmit data at 128 kbps as a variable rate Internet protocol service for virtually global Internet communication using satellites.
  • the remote streaming server 16 preferably includes Mac OSX Server version 3 for replicating streams produced using the Sorenson Broadcaster software or RealSystems Server 8 for replicating streams produced in RealProducerTM Plus 8 to a plurality of other remote computers such as PC 20, via Worldwide Web pages.
  • the record button on camera 11 is pressed (to record the captured images/sound to tape) and the "Broadcast” button in Sorenson BroadcasterTM 18, or the "Start” button in RealProducer TM Plus 8 is selected and the images and sound captured by the camera 11 will then be transferred as analogue video and audio signals over cables 12 and converted into digital data by the video adapter of the portable computer 13.
  • the software executing on the computer 13 will then produce a QuickTimeTM (when using Sorenson Broadcaster TM) or RealPlayer TM (when using RealProducer TM Plus 8) data stream which is transmitted over the ISDN line 14 to the Nera World Communicator or Glocom Gemini-128 Communicator 15.
  • a video window on the screen of the laptop 13 should display compressed broadcast images and the black buffer window should display ongoing audio and video data rates.
  • the data is transmitted via the Nera World Communicator or Glocom Gemini-128 Communicator 15 to the remote streaming server 16 which transfers copies of the data stream to other computers 20 configured to connect to its web page and receive the images .
  • the novel use of the combination of hardware components and software means that images and sound of reasonable quality can effectively be broadcast to a plurality of receiving terminals connected to the Internet anywhere in the world at a frame rate of between 6 and 12.5 frames per second.
  • the higher frame rate can be achieved by using the Glocom Gemini-128 Communicator which allows the higher data transfer dual ISDN to be used.
  • the portability of the hardware means that it used in remote and extreme/dangerous locations and can be operated by a one person.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Le procédé de l'invention consiste à produire (12) des signaux analogiques vidéo et audio au moyen d'une caméra vidéo (11), à convertir ces signaux en données numériques, au moyen d'un ordinateur portatif (13) utilisé pour produire un flux de données (14), puis à transmettre ce flux de données à un serveur de contenus en transit (16), par le biais d'un modem RNIS et d'un dispositif de communication satellitaire portable (15). Le serveur peut alors transmettre le flux de données à plusieurs récepteurs, par l'intermédiaire de l'Internet, réalisant ainsi une radiodiffusion en direct. Le fait que la caméra, l'ordinateur et le dispositif de télécommunications satellitaire soient portatifs permet l'utilisation du système par une seule personne, même dans des endroits éloignés, n'importe où dans le monde.
PCT/GB2001/001192 2000-03-23 2001-03-19 Transmission de donnees video sur un reseau de telecommunications WO2001072043A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU40888/01A AU4088801A (en) 2000-03-23 2001-03-19 Transmitting video data over a communications network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0006894.0 2000-03-23
GBGB0006894.0A GB0006894D0 (en) 2000-03-23 2000-03-23 Transmitting video data over a communications network

Publications (1)

Publication Number Publication Date
WO2001072043A1 true WO2001072043A1 (fr) 2001-09-27

Family

ID=9888161

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/001192 WO2001072043A1 (fr) 2000-03-23 2001-03-19 Transmission de donnees video sur un reseau de telecommunications

Country Status (3)

Country Link
AU (1) AU4088801A (fr)
GB (1) GB0006894D0 (fr)
WO (1) WO2001072043A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003107675A1 (fr) * 2002-06-14 2003-12-24 Patrick Stewart Transmission en continu d'emissions de television en temps reel
GB2402851A (en) * 2003-06-04 2004-12-15 Hewlett Packard Development Co Image data transfer across a network via a nearby mobile device
WO2006079686A1 (fr) * 2005-01-26 2006-08-03 Sami Kuusela Procede, systeme et serveur pour stocker et traiter des fichiers audio et/ou video
GB2428951A (en) * 2005-07-26 2007-02-07 Harry Llewellyn Live video streaming
EP1938205A1 (fr) * 2005-10-14 2008-07-02 Microsoft Corporation Services de partage de video
WO2011022430A2 (fr) * 2009-08-17 2011-02-24 Weigel Broadcasting Co. Système et procédé pour une production audiovisuelle en direct à distance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10232924A (ja) * 1997-02-19 1998-09-02 Matsushita Electric Ind Co Ltd 動画像取り込みシステム
WO1998051080A1 (fr) * 1997-05-07 1998-11-12 Edward Acosta Systeme et procede de surveillance d'informations visuelles situees a distance
WO1999012349A1 (fr) * 1997-09-04 1999-03-11 Discovery Communications, Inc. Dispositif d'acces et commande video de reseau informatique, y compris la correction d'images
EP0986259A2 (fr) * 1998-09-04 2000-03-15 Matsushita Electric Industrial Co., Ltd. Système de caméra de réseau de surveillance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10232924A (ja) * 1997-02-19 1998-09-02 Matsushita Electric Ind Co Ltd 動画像取り込みシステム
WO1998051080A1 (fr) * 1997-05-07 1998-11-12 Edward Acosta Systeme et procede de surveillance d'informations visuelles situees a distance
WO1999012349A1 (fr) * 1997-09-04 1999-03-11 Discovery Communications, Inc. Dispositif d'acces et commande video de reseau informatique, y compris la correction d'images
EP0986259A2 (fr) * 1998-09-04 2000-03-15 Matsushita Electric Industrial Co., Ltd. Système de caméra de réseau de surveillance

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BRACKETT J W: "SATELLITE-BASED DISTANCE LEARNING USING DIGITAL VIDEO AND THE INTERNET", IEEE MULTIMEDIA,US,IEEE COMPUTER SOCIETY, vol. 5, no. 3, 1 July 1998 (1998-07-01), pages 72 - 76, XP000783113, ISSN: 1070-986X *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 14 31 December 1998 (1998-12-31) *
SERVETTO S D ET AL: "VIDEO STREAMING OVER THE PUBLIC INTERNET: MULIPLE DESCRIPTION CODES AND ADAPTIVE TRANSPORT PROTOCOLS", KOBE, JAPAN, OCT. 24 - 28, 1999,LOS ALAMITOS, CA: IEEE,US, 24 October 1999 (1999-10-24), pages 85 - 89, XP000921561, ISBN: 0-7803-5468-0 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003107675A1 (fr) * 2002-06-14 2003-12-24 Patrick Stewart Transmission en continu d'emissions de television en temps reel
GB2402851A (en) * 2003-06-04 2004-12-15 Hewlett Packard Development Co Image data transfer across a network via a nearby mobile device
GB2402851B (en) * 2003-06-04 2006-06-28 Hewlett Packard Development Co Image data transfer
US7404007B2 (en) 2003-06-04 2008-07-22 Hewlett-Packard Development Company, L.P. System for uploading image data from a user mobile device to a nearby third-party mobile device before transfering to a network storage service device
WO2006079686A1 (fr) * 2005-01-26 2006-08-03 Sami Kuusela Procede, systeme et serveur pour stocker et traiter des fichiers audio et/ou video
GB2428951A (en) * 2005-07-26 2007-02-07 Harry Llewellyn Live video streaming
EP1938205A1 (fr) * 2005-10-14 2008-07-02 Microsoft Corporation Services de partage de video
EP1938205A4 (fr) * 2005-10-14 2010-01-20 Microsoft Corp Services de partage de video
WO2011022430A2 (fr) * 2009-08-17 2011-02-24 Weigel Broadcasting Co. Système et procédé pour une production audiovisuelle en direct à distance
WO2011022430A3 (fr) * 2009-08-17 2011-07-21 Weigel Broadcasting Co. Système et procédé pour une production audiovisuelle en direct à distance

Also Published As

Publication number Publication date
AU4088801A (en) 2001-10-03
GB0006894D0 (en) 2000-05-10

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