US Patent Application No: 2003/0236,793

Number of patents in Portfolio can not be more than 2000

Compressed prefix tree structure and method for traversing a compressed prefix tree


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A compressed prefix tree data structure is provided that allows large prefix trees and Virtual Private Network (VPN) trees to be placed in external memory, while minimizing the number of memory reads needed to reach a result. The compressed prefix tree data structure represents one or more bonsai trees, where each bonsai tree is a portion of a prefix tree containing two or more nodes that can be coded into a single data word (codeword). Each codeword is stored in a portion of the external memory (e.g., 16 bytes of DRAM), and retrieved as a unit for processing. Thus, each external DRAM call can retrieve multiple nodes of a prefix tree, reducing the time required for traversing the prefix tree.

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Inventor Name Address # of filed Patents Total Citations
Karlsson, Tobias Rockville, MD 18 66

Patent Citation Ranking

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Patent Info (Count) # Cites Year
AT&T CORP. (4)
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SAP AG (2)
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IM2, Inc. (1)
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