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:
Jun. 29, 1999
Filed:
Nov. 25, 1996
Richard Frederick Poppen, San Jose, CA (US);
Etak, Inc., Menlo Park, CA (US);
Abstract
A system is employed for finding a path in a network between an origin in a first region and a destination in a second region. In finding this path, the system finds three paths: a path between the origin and an exit node for the first region, a path between an entrance node for the second region and the destination, and a path between the exit node and the entrance node. These three paths are combined to construct the path between the origin and the destination. A set of nodes for use as exit nodes or entrance nodes for a region may be identified by identifying a set of boundary nodes for the region and identifying a set of target nodes. The target nodes are each separated from the region by a sufficient cost. The set of target nodes may serve as a set of exit nodes or entrance nodes. The set of target nodes may also be modified to improve its operation as a set of exit nodes or entrance nodes.