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| description |
22 pages
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Multimedia presentations are applicable in various domains such as
advertising, commercial presentations or education. Multimedia
presentations are described by multimedia documents. The
presentation of multimedia documents require vast system resources
due to the huge amount of data that has to be transferred and
processed by the computer system. If multimedia documents can be
accessed on-line via different types of networks and be presented on
various types of terminals, such as PCs or Set-Top-Units, different
amounts of resources may be available at presentation time. Hence,
it can happen that there are not enough resources to render a
multimedia document according to the specification. For usual
multimedia documents resource scarcity implies an arbitrarily
reduced quality of the presentation or it can even be impossible to
start or continue the presentation. To handle resource scarcity in a
better way, multimedia documents can be specified flexible so that
they can be adapted to different resource situations. Our temporal
model provides abstractions to specify flexible multimedia documents
on two levels. It is possible to specify multimedia documents with
alternative presentation parts. Further on, the presentation
behavior of media objects can vary within specified limits. Hence,
the temporal model allows to compose presentations which have a
defined behavior when resource restrictions occur. The presented
adaptive scheduling algorithm uses the flexibility in specifications
to adapt presentations at regular intervals to the current resource
situation. Hence, the quality of presentations is reduced or
increased in a defined manner
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| publisher |
Stuttgart, Germany, Universität Stuttgart
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| type |
Text
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| Technical Report
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| source |
ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/TR-1997-12/TR-1997-12.pdf
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| contributor |
Verteilte Systeme (IPVR)
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| format |
application/pdf
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| subject |
Distributed Systems (CR C.2.4)
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| Document Preparation (CR I.7.2)
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| Multimedia Information Systems (CR H.5.1)
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| Adaptive Multimedia Documents
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| Adaptive Scheduling
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| relation |
Technical Report No. 1997/12
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