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. 21, 1996
Filed:
Mar. 14, 1994
Joseph W Seda, Wheeling, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A route planning method, and apparatus, for constructing a route connecting a given origin location and a given destination location from a hierarchical map database having more than one layer, where each layer represents a different level of detail. The method includes provision of a list of road segments extracted from an initial planning layer of the hierarchical map database, wherein each of the road segments in the list of road segments are connected to the given origin location. An alternative planning layer is selected dependent on exceeding a predetermined heading criteria measured between a heading associated with heading associated with one of the road segments in the list of road segments and a heading associated with the given destination location.