Navigation system with user definable cost values

G - Physics – 08 – G

Patent

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Details

G08G 9/00 (2006.01) G01C 21/34 (2006.01) G08G 1/0968 (2006.01) G08G 1/137 (2006.01)

Patent

CA 2303221

A navigation system (20) permits the user to designate certain roads or area to avoid when planning a route. The navigation system generally includes a database (28) of road segments and a cost associated with the road segments, such as estimated time or travel across that road segment and estimated length of travel across that road segment. The navigation system (20) determines a route from a selected beginning point to a desired destination by evaluating the cost of the road segments to be traveled in several potential routes and recommends the potential route having the lowest total cost. The user can selectively modify the cost of selected road segments to indicate a preference or avoidance of such roads. By increasing the cost of a road segment, the navigation system (20) is less likely to recommend a potential route which includes that road segment. Similarly, by decreasing the cost of a selected road segment, the navigation system (20) is more likely to recommend a potential route which includes that road segment.

On décrit un système de navigation (20) qui permet à un usager d'indiquer des routes ou des zones qu'il souhaite éviter lorsqu'il planifie son itinéraire. Le système de navigation inclut généralement une base de données (28) de tronçons routiers et un coût associé à ces tronçons, sur la base par exemple d'une estimation de la durée ou de la distance de parcours sur ce tronçon. Le système de navigation (20) détermine un itinéraire d'un point de départ choisi à un point de destination voulu en évaluant le coût des tronçons routiers à parcourir parmi plusieurs itinéraires possibles et recommande l'itinéraire possible présentant le coût global le moins cher. L'usager peut modifier sélectivement le coût de tronçons routiers choisis par rapport à la recommandation de préférence ou d'évitement desdites routes. Plus le coût d'un tronçon de route est élevé, moins le système de navigation (20) est susceptible de recommander un itinéraire possible incluant ledit tronçon. Inversement, moins le coût d'un tronçon de route choisi est élevé, plus le système de navigation (20) est susceptible de recommander un itinéraire possible incluant ledit tronçon.

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