Efficient algorithm and protocol for remote differential compression on a local device
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United States of America Patent
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Issued Date -
Nov 24, 2005
app pub date -
May 13, 2004
filing date -
May 13, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention is used to update objects over limited bandwidth networks. Objects are updated between two or more computing devices using remote differential compression (RDC) techniques such that required data transfers are minimized. In one aspect, efficient large object transfers are achieved by recursively applying the RDC algorithm to its own metadata; a single or multiple recursion step(s) may be used in this case to reduce the amount of metadata sent over the network by the RDC algorithm. Objects and/or signature and chunk length lists can be chunked by locating boundaries at dynamically determined locations. A mathematical function evaluates hash values associated within a horizon window relative to potential chunk boundary.
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