Navigation apparatus, map data distribution apparatus, map data distribution system and map display method
A navigation apparatus includes a route searching unit that searches for a plurality of routes from a departure point to a destination and a map display control unit that displays a map of the plurality of routes searched out by the route searching unit upon a display monitor, and, if any two or more among the plurality of routes overlap upon and pass along a same road, the map display control unit displays the overlapping portions as shifted.
1. A navigation apparatus, comprising:
a route searching unit that searches for a plurality of routes from a departure point to a destination; and
a map display control unit that displays a map of the plurality of routes searched out by the route searching unit upon a display monitor, wherein:
if any two or more among the plurality of routes overlap upon and pass along a same road, the map display control unit displays the overlapping route portions as shifted.
2. A navigation apparatus according to claim 1 , wherein:
when displaying the overlapping portions as shifted, the map display control unit shifts an entirety of each of the overlapping routes with maintaining its original shape.
3. A navigation apparatus according to claim 2 , wherein:
the map display control unit sets a shift width for each of the overlapping routes based upon coordinates of a center of gravity of each of the overlapping route.
4. A navigation apparatus according to claim 1 , wherein:
when displaying the overlapping portions as shifted, the map display control unit shifts only the portions of the routes which overlap while not shifting portions other than the overlapping portions.
5. A navigation apparatus according to claim 4 , wherein:
the map display control unit sets a shift width for each of the overlapping routes based upon an outward angle from the overlapping portion of each of the overlapping route or an inward angle towards the overlapping portion of each of the overlapping route.
6. A navigation apparatus according to claim 1 , wherein:
when displaying the overlapping portions as shifted, the map display control unit shifts each of the routes by a predetermined width unit which is determined in advance.
7. A map data distribution apparatus, comprising:
a route searching unit that searches for a plurality of routes from a departure point to a destination;
a data generation unit that generates data for display, for displaying a map of the plurality of routes searched out by the route searching unit; and
a data distribution unit that distributes the data for display generated by the data generation unit, wherein:
if any two or more among the plurality of routes overlap upon and pass along a same road, the data generation unit generates the data for display while shifting the overlapping route portions.
8. A map data distribution apparatus according to claim 7 , wherein:
when generating the data for display while shifting the overlapping portions, the data generation unit shifts an entirety of each of the overlapping routes with maintaining its original shape.
9. A map data distribution apparatus according to claim 8 , wherein:
the data generation unit sets a shift width for each of the overlapping routes based upon coordinates of a center of gravity of each of the overlapping routes.
10. A map data distribution apparatus according to claim 7 , wherein:
when generating the data for display while shifting the overlapping portions, the data generation unit shifts only the portions of the routes which overlap while not shifting portions other than the overlapping portions.
11. A map data distribution apparatus according to claim 10 , wherein:
the data generation unit sets a shift width for each of the overlapping routes based upon an outward angle from the overlapping portion of each of the overlapping routes or upon an inward angle towards the overlapping portion of each of the overlapping routes.
12. A map data distribution apparatus according to claim 7 , wherein:
when displaying the overlapping portions as shifted, the data generation unit shifts each of the routes by a predetermined width unit which is determined in advance.
13. A map data distribution system, comprising:
a map data distribution apparatus according to claim 7 ; and
a map display apparatus that receives the data for display and displays a map of the plurality of routes.
14. A map display method, comprising:
searching for a plurality of routes from a departure point to a destination; and
displaying a map of the plurality of routes which are searched out with the overlapping route portions as being shifted, if any two or more among the plurality of routes which have been searched out overlap upon and pass along the same road.