JP2003294470A5 - - Google Patents

Claims (11)

First storage means for storing weather information;
A second storage means for storing map data;
A display device;
A data processing means for obtaining a route from a set departure point to a destination based on at least the weather information and the map data and displaying the route on the display device;
A third storage means for storing at least the weather cost corresponding to each link of the map data;
The route search device , wherein the data processing means obtains the route based on at least the weather information, the map data, and the weather cost . The third storage unit further stores a seasonal coefficient corresponding to each link of the map data, and the data processing unit is configured to store the weather information, the map data, the weather cost, and the seasonal coefficient based on the weather coefficient. The route search apparatus according to claim 1, wherein a route is obtained. First storage means for storing weather information;
A second storage means for storing map data;
Third storage means for storing at least weather costs corresponding to each link of the map data;
A fourth storage means in which a weather weighting coefficient indicating weighting between the route search by the weather cost and the route search by the normal cost is set;
Traffic information receiving means for receiving traffic information;
A data processing means for obtaining a display device and displaying a route from a set departure point to a destination based on the weather information, the traffic information, the map data, the weather cost, and the weather weighting coefficient, on the display device; A route search device comprising: The data processing means includes
When the weather weighting coefficient is set to a coefficient indicating weather priority, the route is determined based on at least the weather information, the map data, and the weather cost ,
When the weather weighting coefficient is set between a coefficient indicating weather priority and a coefficient prioritizing traffic conditions, the first route is obtained based on at least the weather information, the map data, and the weather cost. In addition, the second route is obtained based on the traffic information and the map data, the cost of the first route is multiplied by the weather weighting factor, and the cost of the second route is compared. The lower one is adopted as the route ,
4. The route search apparatus according to claim 3 , wherein when the weather weighting coefficient is set to a coefficient that prioritizes traffic information, the route is obtained based on the traffic information and the map data. The third storage unit further stores a seasonal coefficient corresponding to each link of the map data, and the data processing unit is configured to store the weather information based on the weather information, the map data, the weather cost, and the seasonal coefficient. 5. The route search device according to claim 4, wherein a route is obtained. The data processing means obtains a candidate for a route from the starting point to the destination, adds the weather cost multiplied by the seasonal coefficient for each link of the map data included in each candidate, and calculates the cost of each candidate. The route search device according to claim 5 , wherein the route search apparatus obtains the candidate having the low cost as the route. Clock means for measuring time and season, and the data processing means reads weather information and a seasonal coefficient from the first storage means based on the output of the clock means, and also reads the weather from the third storage means. The route search device according to claim 6, wherein the cost is read out. A weather information reception unit that receives weather information, and an operation unit, said data processing means, the top panel air information receiving unit weather information and the operation part of the weather information entered the first by the operation received route search device according to any one of claims 1 to 7, characterized in that stored in the storage means. A weather coefficient corresponding to each link of the map data is stored instead of the weather cost, and the data processing means obtains the weather cost based on the weather coefficient and the distance of the corresponding link. route search device according according to any one of claims 1 to 8. Navigation apparatus characterized by route searching apparatus according is mounted to one of claims 1 to 9. A program for causing a central processing unit to execute data processing means of a route search device according to any one of claims 1 to 9 .