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. 02, 1995
Filed:
May. 20, 1993
Michael Barnea, Highland Park, IL (US);
Allan Kirson, Highland Park, IL (US);
Motorola Inc., Schaumburg, IL (US);
Abstract
A multi-mode route guidance system and a corresponding method for same include a device to determine a present position, preferable a GPS receiver, and an input device (111) for inputting a traveler specified destination position. A map database (115) provides memory capable of storing a first, or topology, type of record (225) that has topology and connectivity information (227), and a second, or route guidance, type of record (217) that has topology, connectivity, and traffic flow restriction information (227, 229). A route guidance device (101) retrieves selected records (217, 219, 221, 223, 225) from the map database (115). The selected records (217, 219, 221, 223, 225) retrieved are determined by the specified destination position and the present position of the traveler. The route guidance device (101) uses a selected record of the first type (225) to provide ground track guidance cues (601) to the traveler, and a selected record of the second type (217) to provide maneuver instruction guidance cues (501) to the traveler. Other system features include partial route planning for generating guidance instructions for guiding the traveler to an intermediate position (941) nearest to the destination position of the traveler (909), and displaying transition screens when the traveler is about to transit from a position covered by a map database having route guidance type records to a map data base having topology type records and vice-versa.