System and method for processing a data stream to determine presence of search terms
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United States of America Patent
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Dec 9, 2008
Grant Date -
Mar 9, 2006
app pub date -
Aug 19, 2005
filing date -
Apr 25, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trap matrix searches the entire contents of a data stream for a pattern that matches the pattern for a search term. In those circumstances where there is a match between patterns of the data stream and the search term, the method and system can proceed to an exact match operation. In particular, a pointer matrix and a corresponding active control matrix are generated according to a set of terms in a rule table. Data is sequenced the trap matrix according to the hierarchy of its trap elements. The trap elements perform a pattern match check between the sequenced data stream and any search term in the set of terms in the rule table. Results from a positive pattern match are preferably communicated from the matching trap element to an exact match lookup.
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