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Session Chair:
Koji Okamura (Kyushu University, Japan)
Presentation
Titles and Speakers:
1) Introduction of
How to Use H.323 Based Video Conference Clients
(download
presentation)
Morishita Yuki (Kyushu University, Japan)
2) Introducing Hardware and Software Required for
Video
Conference Using DV Camera
(download
presentation)
Tabaru Masayuki
(Kyushu University, Japan)
3)
Designing Distance
Learning Systems for Large Scale Classrooms (download
presentation)
Yagi Keisuke (Kyoto
University, Japan)
Description: Recently opportunities of using video
conference tools are increased and especially they have been
used for practical purpose rather than just purpose for research
themselves. Then understanding of technologies and know how for
video conference tools are very important to use them well.
Furthermore user should know not only tools but also related
tools and know how i.e. echo canceler tools and best location of
microphones and speakers. In this session, 1) video conference
tools based on H.323 which is most popular protocols for video
conference, 2) tools using DV (Digital Video) which are tools
over next generation Internet , 3) other tools and know how for
using these video conference tools more effectively are
explained.
Presentation Abstracts:
1.
Introduction of How to Use H.323 Based Video Conference Clients
Abstract: H.323 standard
provides multimedia communication with real-time audio and video
across IP-based networks including Internet. Nowaday, the needs
of video conferencing is increasing because of the advancement
in Internet. Using H.323 based client, one can do video
conference with the other without considering compatibility
about communication protocol. In this talk, I explain how to set
up and use typical H.323 clients, Viewstation And Netmeeting.
2. Introducing Hardware and Software Required for
Video
Conference Using DV Camera
Abstract: Digital Video(DV) format is high-resolution and
high-quality format, so using DV make the most sense for video
conference. In past days, we can't use this format for video
conference because it requires large-bandwidth. But recently we
can readily make use of it for video conference with the
progress of wider bandwidth. To do video conference
using DV, we need some hardware and software and we have to set
up them properly. In this talk, first we explain how to set up
PC, camera, etc. to do video conference using DV, and after that
we introduce some video conference software(DVTS, DVComm, Comet
DV).
3. Designing Distance Learning Systems for Large Scale
Classrooms
Abstract: For interactive distance learning classes in
large-scale classrooms that have more than 100 students, high
quality audio/video transmission is important. In this talk,
fundamental design strategies for the systems of the distance
learning classes are described. For video transmission, some
criteria such as camera and projector layouts, duration, and
quality are
discussed. For audio transmission, acoustic echo canceling is
focused. For natural and smooth audio transmission, we logically
design the audio system first. After that, we implement the
system with audio mixers and acoustic echo canceler. In order to
make the system robust to the careless operation by novice
users, we prefer to use three audio mixers.
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