Navigation system
First Claim
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1. A navigation system for a vehicle, the navigation system comprising:
- a route retrieval unit which retrieves routes to a destination under a plurality of predetermined retrieval conditions, the retrieval conditions including a reach time-first retrieval condition under which a route is retrieved with priority given to a reach time required to reach a designation, and a distance-first retrieval condition under which a route is retrieved with priority given to a distance to a destination;
a route guide unit that indicates, as a guide route, a route selected by a user from the routes retrieved under the plurality of predetermined retrieval conditions;
a memory unit which stores, among the plurality of retrieval conditions, a retrieval condition under which the route selected by the user is retrieved;
a traffic information acquisition unit that externally acquires traffic information;
a dynamic route retrieval unit that retrieves a dynamic route, which bypasses a zone affecting driving of the vehicle, when recognizing the zone affecting driving along the guide route based on the acquired traffic information, the dynamic route being retrieved under the same retrieval condition which is stored in the memory unit and under which the guide route being indicated by the route guide unit is retrieved by the route retrieval unit; and
a new route designation unit that designates, as a guide route, the dynamic route retrieved by the dynamic route retrieval unit.
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Abstract
A user selects as a guide route a route from among multiple routes retrieved under respective predetermined retrieval conditions. A retrieval condition under which the route selected by the user was retrieved is stored in an external memory. When a zone affecting driving is recognized along the guide route based on externally acquired information on traffic, a dynamic route that bypasses the zone affecting driving is retrieved according to the retrieval condition stored in the external memory. The retrieved dynamic route is then designated as a guide route.
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Citations
10 Claims
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1. A navigation system for a vehicle, the navigation system comprising:
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a route retrieval unit which retrieves routes to a destination under a plurality of predetermined retrieval conditions, the retrieval conditions including a reach time-first retrieval condition under which a route is retrieved with priority given to a reach time required to reach a designation, and a distance-first retrieval condition under which a route is retrieved with priority given to a distance to a destination; a route guide unit that indicates, as a guide route, a route selected by a user from the routes retrieved under the plurality of predetermined retrieval conditions; a memory unit which stores, among the plurality of retrieval conditions, a retrieval condition under which the route selected by the user is retrieved; a traffic information acquisition unit that externally acquires traffic information; a dynamic route retrieval unit that retrieves a dynamic route, which bypasses a zone affecting driving of the vehicle, when recognizing the zone affecting driving along the guide route based on the acquired traffic information, the dynamic route being retrieved under the same retrieval condition which is stored in the memory unit and under which the guide route being indicated by the route guide unit is retrieved by the route retrieval unit; and a new route designation unit that designates, as a guide route, the dynamic route retrieved by the dynamic route retrieval unit. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10)
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7. A method used in a navigation system for a vehicle,
the navigation system including: -
a route retrieval unit which retrieves routes to a destination under a plurality of predetermined retrieval conditions, the retrieval conditions including a reach time-first retrieval condition under which a route is retrieved with priority given to a reach time required to reach a destination, and a distance-first retrieval condition under which a route is retrieved with priority given to a distance to a destination; and a route guide unit that indicates, as a guide route, a route selected by a user from the routes retrieved under the plurality of predetermined retrieval conditions, the method comprising; storing, among the plurality of retrieval conditions, a retrieval condition, under which the route selected by the user is retrieved; acquiring traffic information externally; retrieving a dynamic route, which bypasses a zone affecting driving of the vehicle, the dynamic route being retrieved under the same retrieval condition which is stored and under which the guide route being indicated by the route guide unit is retrieved by the route retrieval unit, when recognizing the zone affecting driving along the guide route based on the acquired traffic information; and designating, as a guide route, the dynamic route which is retrieved.
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8. A navigation system for a vehicle, the navigation system comprising:
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a route retrieval means for retrieving routes to a destination under a plurality of predetermined retrieval conditions, the retrieval conditions including a reach time-first retrieval condition under which a route is retrieved with priority given to a reach time required to reach a destination, and a distance-first retrieval condition under which a route is retrieved with priority given to a distance to a destination; a route guide means for indicating, as a guide route, a route selected by a user from the routes retrieved under the plurality of predetermined retrieval conditions; a memory means for storing, among the plurality of retrieval conditions, a retrieval condition, under which the route selected by the user is retrieved; a traffic information acquisition means for externally acquiring traffic information; a dynamic route retrieval means for retrieving a dynamic route, which bypasses a zone affecting driving of the vehicle, under the same retrieval condition which is stored in the memory means and under which the guide route being indicated by the route guide means is retrieved by the route retrieval means, when recognizing the zone affecting driving along the guide route based on the acquired traffic information; and a new route designation means for designating, as a guide route, the dynamic route retrieved by the dynamic route retrieval means.
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Specification