The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2009
Filed:
Aug. 04, 2006
Claude Basso, Raleigh, NC (US);
Jean L. Calvignac, Cary, NC (US);
Gordon T. Davis, Chapel Hill, NC (US);
Marco Heddes, Lawrence, MA (US);
Piyush C. Patel, Cary, NC (US);
Steven R. Perrin, Raleigh, NC (US);
Grayson W. Randall, Cary, NC (US);
Sonia K. Rovner, Chapel Hill, NC (US);
Claude Basso, Raleigh, NC (US);
Jean L. Calvignac, Cary, NC (US);
Gordon T. Davis, Chapel Hill, NC (US);
Marco Heddes, Lawrence, MA (US);
Piyush C. Patel, Cary, NC (US);
Steven R. Perrin, Raleigh, NC (US);
Grayson W. Randall, Cary, NC (US);
Sonia K. Rovner, Chapel Hill, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A technique is provided to delete a leaf from a Patricia tree having a direct table and a plurality of PSCB's which decode portions of the pattern of a leaf in the tree without shutting down the functioning of the tree. A leaf having a pattern is identified as a leaf to be deleted. Using the pattern, the tree is walked to identify the location of the leaf to be deleted. The leaf to be deleted is identified and deleted, and any relevant PSCB modified, if necessary. The technique also is applicable to deleting a prefix of a prefix.