Route search method in navigation system
First Claim
1. A route search method in a navigation system in which POI (Point of Interest) information regarding POIs is incorporated in map information and a guide route up to a specified POI is searched for, the method comprising the steps of:
- when a POI has a plurality of gateways, incorporating identification data for road links connected respectively to the gateways in said POI information;
when a plurality of road links are stored corresponding to a POI set as a destination, searching for a route up to each of the road links; and
determining an optimum one of the found routes as the guide route.
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Accused Products
Abstract
A route search method in a navigation system in which POI (Point of Interest) information regarding POIs is incorporated in map information and a route up to a specified POI is searched for. When a POI has a plurality of gateways, identification data for road links connected respectively to the gateways is incorporated in the POI information. When a certain POI is set as the destination, the navigation system refers to the POI information and checks whether a plurality of road links are stored corresponding to the set POI. If so, the system searches for a route up to each of the road links, and determines an optimum one of the found routes as the guide route.
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Citations
18 Claims
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1. A route search method in a navigation system in which POI (Point of Interest) information regarding POIs is incorporated in map information and a guide route up to a specified POI is searched for, the method comprising the steps of:
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when a POI has a plurality of gateways, incorporating identification data for road links connected respectively to the gateways in said POI information;
when a plurality of road links are stored corresponding to a POI set as a destination, searching for a route up to each of the road links; and
determining an optimum one of the found routes as the guide route. - View Dependent Claims (2)
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3. A route search method in a navigation system in which POI (Point of Interest) information regarding POIs is incorporated in map information and a guide route up to a specified POI is searched for, the method comprising the steps of:
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when a relationship between a POI and shops in the POI is defined as a parent-child relation, storing child POIs in correspondent relation to a parent POI and storing one road link in correspondent relation to each child POI as part of said POI information; and
when one child POI is set as a destination, searching for a guide route up to the road link corresponding to the set child POI. - View Dependent Claims (4, 5, 6)
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- 7. An information storage medium for use with a vehicle navigation system, wherein the storage medium stores information relating to a plurality of possible destinations and, for destinations having at least two gateways connected to different road links, stores an identification of said road links.
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13. A navigation system for a vehicle, comprising:
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a map storage medium for storing map information;
a position measuring device for measuring the current position of the vehicle;
a storage medium for storing control programs associated with route guidance;
a processor for controlling the operation of the navigation system; and
a display monitor;
wherein the map information contains information relating to a plurality of possible destinations and, for a destination having a plurality of gateways connected to different road links, also contains an identification of said road links.
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Specification