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:
May. 10, 2005
Filed:
Feb. 25, 2002
Alain L. Kornhauser, Princeton, NJ (US);
David Bernstein, Mt. Crawford, VA (US);
Mark A. Hornung, Skillman, NJ (US);
Alain L. Kornhauser, Princeton, NJ (US);
David Bernstein, Mt. Crawford, VA (US);
Mark A. Hornung, Skillman, NJ (US);
ALK Technologies, Inc., Princeton, NJ (US);
Abstract
A client/server navigation system utilizes partial route guidance trees, enabling a thin, mobile client to detect route deviation and provide alternate instructions while awaiting response from a server. The system () consists of a server () containing a network database and route-calculation program; a client () capable of obtaining () its current location and destination, displaying route instructions (), and determining when it needs additional instructions from the server (); and communication () between the client () and server (). The invention allows for long routes and responsive operation on a small, low-powered client despite lags and lapses in communication.