HELP! * GREY=local Full HTML for

LOCAL foilset Overview of Tango, WebWisdom and Video on Demand for WebMed

Given by Marek Podgorny at NPAC Meeting on Web based Medical Informatics on 11 June 97. Foils prepared 27 June 97
Abstract * Foil Index for this file

Tango Collaboratory including its Upgrades
WebWisdom for Education and linkage to Tango
Video on Demand and linkage to Tango

Table of Contents for full HTML of Overview of Tango, WebWisdom and Video on Demand for WebMed

1 Business Issues vs. Technology Demonstrations
2 Communication/Collaboration
3 TANGO: Highlights
4 TANGO demonstration
5 TANGO: Relevance
6 TANGO: Status
7 WebWisdom: Features Summary
8 WebWisdom: Capabilities
9 WebWisdom: Capabilities II
10 TANGO/Wisdom
11 WebWisdom demonstration
12 Video on Demand: Features
13 Video on Demand: Capabilities
14 Video on Demand: Capabilities II
15 Internet Video on Demand
16 Video on Demand/TANGO Integration

This table of Contents Abstract

HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 1 Business Issues vs. Technology Demonstrations

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Distributed medical records
  • Web-linked database demo
Communication framework supporting MDI
  • TANGO system demo
Education/Training for medical personnel
  • WebWisdom/TANGO demo
Marketing and delivery of medical video contents
  • VoD/Web video demo
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 2 Communication/Collaboration

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
TANGO is a software framework supporting computer-based communication and collaboration
  • Implemented for command and control under a DoD contract
  • Runs in Web environment and uses standard Web technologies
  • Allows for implementation of arbitrary collaboratory applications
  • Multiplatform run-time and multi-language API
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 3 TANGO: Highlights

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Technically, TANGO is a distributed system based on event broadcasting
Core system is implemented in Java
Base programming module is a Java applet
Global architecture is a mesh of servers
Session metaphor is a meeting room with tools
Asynchronous collaboration is enabled via session recording to database backend
TANGO applications can run stand-alone
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 4 TANGO demonstration

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Generic tools: chat and whiteboard
  • session control mechanisms
Multimedia tools: audio/video conferencing
Shared contents: synchronized browser
  • remote session capability
Medical application examples:
  • Visible Human
  • Medical image viewer
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 5 TANGO: Relevance

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Enables construction of distributed medical application by combining many elements:
  • Distributed and collaborative access to databases
    • nicely fits the "bridge" paradigm
    • enables medical protocol enforcement
  • Traditional videoteleconferencing
  • Remote instrument access
  • Remote multimedia presentations
  • Extensible via rather simple programming interface
  • Database support enables self-documentation
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 6 TANGO: Status

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Core system implemented by a team of 3 programmers within ~6 months, available.
  • TANGO server for Unix and Windows NT
  • TANGO Plug-ins for Wndows95/NT, IRIX, Solaris
APIs for Java, C/C++, and JavaScript available
Two generations of GUI implemented
"Lessons learned" are being incorporated into TANGO II, scheduled for release end of August
  • new sessions paradigm, database support, multi-server support
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 7 WebWisdom: Features Summary

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
WebWisdom is a knowledge dissemination system for Internet and intranets
  • Assumes a classic hierarchical model of Information which fits most Universities and other organizations
  • Supports original data in Persuasion, PowerPoint, HTML and screen dump form
  • Allows arbitrary mixing of this material via play list mechanism
  • Supports both synchronous and asynchronous learning modes
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 8 WebWisdom: Capabilities

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Handles a wide variety of presentation formats (Persuasion, PowerPoint, Kodak PhotoSets, Screendumps and raw HTML) in general locations
Handles RealAudio for both recording (where it logs where presentation page changes) and playback
Handles general playlists where composite presentations are made up by selecting from base presentations.
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 9 WebWisdom: Capabilities II

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Handles several different parameter sets (defining fonts, colors, applets etc used) which can be stored and read from server).
Has options to allow Applets to display titles
Logging feature supports assessment and other such post-presentation review.
Attached Audio Editor supports processing of real audio files produced during delivery of lecture and allows one to cut audio files and associate them with particular foils
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 10 TANGO/Wisdom

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Collaborative version of WebWisdom aimed at distance education
Uses the NPAC Collaborative System TANGO which has a well defined JavaScript API using LiveConnect for Java to JavaScript connectivity.
Supports asymmetric use with one multiframe WebWisdom ("master") controlling multiple clients running simpler single frame system.
With replicated course material, only control information is passed over the expensive network connection
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 11 WebWisdom demonstration

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Asynchronous mode for self-paced training
  • Audio layer authoring subsystem
  • Search and indexing capabilities
  • Display technology and setup
  • Delivery of the audio layer
Synchronous mode for interactive distance learning
  • Collaborative JavaScript technology
  • Master-client relationship - independent information views
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 12 Video on Demand: Features

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
A complete, end-to-end system for
  • video delivery over local area networks
  • video contents marketing over Internet
Modular system supporting following functionality:
  • video digitization and compression to high (MPEG1) and low (H.263/GSM) rate formats
  • contents indexing and asset management via relational database backend
  • video server, codec independent and distributed
  • software and hardware supported intelligent multi-codec video clients
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 13 Video on Demand: Capabilities

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Codec-independent streaming video server for Windows NT
  • supports any audio/video file format
Universal software video client
  • automatically recognizing and playing video formats
    • MPEG1, AVI (1.5 - 2 Mbps), QuickTime, H.263/GSM (28-128 Kpbs)
    • VCR-like capability (random stream access)
High-performance hardware supported video client
  • MPEG1 decoder from Optibase, full screen, 30 fps, VHS quality
  • Available for Windows 3, port to W95 requires some work
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 14 Video on Demand: Capabilities II

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Video contents is indexed via the associated textual layer:
  • closed-captioning (automatic acquisition system)
  • manual annotations
  • random access from the web browser window
Video server asset management:
  • all system metadata stored in relational backend
  • web-based system administration interface
  • support for clustered distributed video server
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 15 Internet Video on Demand

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
MPEG1/AVI contents suitable for LANs
  • main application: corporate video archive, education
Internet delivery requires low bit rate
  • current commercial servers are codec dependent
    • multiple servers needed for LAN and Internet video
  • our system offers a conversion tool from MPEG1 to H.263/GSM encoding
    • bit rates: 33-12o Kbps (phone line - ISDN range)
    • both MPEG1 and H.263 representations stored on the server
Application: video contents marketing via Internet preview
HELP! * GREY=local HTML version of LOCAL Foils prepared 27 June 97

Foil 16 Video on Demand/TANGO Integration

From Overview of Tango, WebWisdom and Video on Demand for WebMed NPAC Meeting on Web based Medical Informatics -- 11 June 97. * See also color IMAGE
Full HTML Index
Master-slave video client architecture
  • Master client for the teacher
    • has all capabilities of the stand-alone video client, including random access capability
    • uses unicast for server access
    • forwards video streams to a multicast address
  • Slave client for students/general audience
    • start/stop capability only
    • session control via TANGO session manager (more secure than standard MBONE)
No need for separate on-demand and broadcast video servers
Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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Page produced by wwwfoil on Fri Jun 27 1997