Bit string search apparatus, search method, and program
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United States of America Patent
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Aug 21, 2012
Grant Date -
Feb 18, 2010
app pub date -
Oct 19, 2009
filing date -
Apr 25, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coupled node tree comprises a root node and a node pair, the node pair being a branch node and leaf node, or a pair of branch nodes, or a pair of leaf nodes arranged in adjacent storage areas. The branch node includes a discrimination bit position of the search key and the first position information of a primary node, one node of a node pair of a link target. The leaf node includes the second position information of the storage area holding an index key that is the target of a search. According to a bit value of the search key of a discrimination bit position in the branch node, repeated linking to a primary node of a node pair of the link target or a node at a position in a memory area adjacent thereto until a leaf node is reached.
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