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| n |
Application
gateways, enhanced servers
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– |
simple
clients, pre-calculations in the fixed network
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compression,
filtering, content extraction
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automatic
adaptation to network characteristics
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| n |
Examples
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picture
scaling, color reduction, transformation of the document
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format
(e.g., PS to TXT)
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detail
studies, clipping, zoom
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headline
extraction, automatic abstract generation
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HDML
(handheld device markup language): simple language
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similar
to HTML requiring a special browser
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HDTP
(handheld device transport protocol): transport protocol for
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HDML,
developed by Unwired Planet
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| n |
Problems
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proprietary
approaches, require special enhancements for browsers
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heterogeneous
devices make approaches more complicated
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