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Given by Marek Podgorny at Rome Lab Quarterly Review for CIV on October 1 96. Foils prepared 22 February 97
Outside Index
Summary of Material
| Introduction |
| Available teleconferencing systems- are they OK? |
| What are "enabling technologies" for Web? |
| We can build a completely new system ! |
| Some intermediate steps were necessary... |
| What in fact we implemented? - features |
| What in fact we implemented? - architecture |
| What is not yet done but should be... |
| Conclusions |
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Integration of multimedia collaboratory environment with Web browser
Contents of presentation
Introduction
Available teleconferencing systems - are they OK?
What are "enabling technologies" for Web?
We can build a completely new system !
Some intermediate steps were necessary...
What in fact we implemented? - features
What in fact we implemented? - architecture
What is not yet done but should be...
Conclusions
Outside Index
Summary of Material
HTML version of Basic Foils prepared 22 February 97 
Full HTML Index
| Janusz Bu³awa, September 1996 |
| The Franco-Polish School of New Information and Communication Technologies |
HTML version of Basic Foils prepared 22 February 97
Full HTML Index
| Introduction |
| Available teleconferencing systems- are they OK? |
| What are "enabling technologies" for Web? |
| We can build a completely new system ! |
| Some intermediate steps were necessary... |
| What in fact we implemented? - features |
| What in fact we implemented? - architecture |
| What is not yet done but should be... |
| Conclusions |
HTML version of Basic Foils prepared 22 February 97
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| Needs for new multimedia communication means are still growing |
| Collaboration becomes more and more important for companies, committees, working groups etc. |
| New technologies enable multimedia teleconferencing (Web, protocols, compression) |
| Network resources are limited |
| Flexible solution is required (QoS, efficiency) |
HTML version of Basic Foils prepared 22 February 97
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Commercial systems:
|
Systems for Internet:
|
HTML version of Basic Foils prepared 22 February 97
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| new protocols (RTP, RSVP, multicast) |
| Java and JavaScript |
| OpenDVE™ collaborative environment |
| new video compression schemes (H.261, H.263, wavelets) |
| Netscape Plug-In API |
| LiveConnect and LiveMedia framework |
HTML version of Basic Foils prepared 22 February 97
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| We propose the following solution: |
| to build collaboratory system with use of the OpenDVE technology |
| to integrate our collaboratory system with Web browser (such as Netscape Navigator 3.0) |
| to make our new system be modular (separate, independent teleconferencing tools) |
| to deploy advanced data compression schemes for videoconferencing |
HTML version of Basic Foils prepared 22 February 97
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| To be able to integrate our collaboratory system with Web browser we first implemented H.263 video player plug-in for Netscape ... |
| To provide session management we experimented a lot with OpenDVE technology: first simple plugins, InSoft's software analysis ... |
| To distribute video data with reasonable bandwidth consumption H.263 software codec has been optimized and extended with some new features: periodical I frames, multiple streams ... |
HTML version of Basic Foils prepared 22 February 97
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| conference management from within Web browser's window (plug-in application based on OpenDVE technology) |
| automatic multi-participant teleconference start |
| separate tools for different types of data: audio and video multipoint (OpenDVE plugins) |
| very low bit rate (64 kbps of one ISDN B-channel can be sufficient for both audio and video) |
| compatibility with T.120 and H.320 |
HTML version of Basic Foils prepared 22 February 97 
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| Conference engine |
| Conference engine |
| Conference engine |
| addressbook |
| OpenDVE plugins |
| browser |
| conference |
| manager |
| plug-in |
| daemon |
| daemon |
| browser |
| conference manager plug-in |
| OpenDVE plugins |
| Conference engine |
| (started via daemon) |
| Callee site |
| browser |
| conference manager plug-in |
| OpenDVE plugins |
| Conference engine |
| (started via daemon) |
| control flow |
| data flow |
| control & data flows |
| TCP/IP |
| TCP/IP |
| UDP |
| UDP |
| UDP |
HTML version of Basic Foils prepared 22 February 97
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| more sophisticated remote software control mechanism (to be provided by third party) |
| more teleconferencing tools (OpenDVE plugins) |
| resources reservation capability (RSVP) |
| teleconference log in a database (JDBC …) |
| LiveConnect with Java applets (already tested with video player plug-in) |
| notebook feature in the conference manager and many more... |
HTML version of Basic Foils prepared 22 February 97
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| Our Web-integrated collaboratory system provides: |
| convenient teleconference management |
| modular, extensible architecture |
| low bit rates and superior quality of service for multimedia teleconferencing |
| state-of-the art technologies |
| compliance to current teleconferencing standards |
| However, many extensions should be done to make this system be more attractive as a product... |