Navigation device, method therefor, program therefor, and recording medium with the same program recorded

• US 20030158653A1
• Filed: 02/12/2003
• Published: 08/21/2003
• Est. Priority Date: 02/14/2002
• Status: Abandoned Application

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Sakai, Akira
• Application Number:
  US10/364,650
• Publication Number:
  US 20030158653A1
• Time in Patent Office: Days
• US Class Current: 701/205
• CPC Class Codes: G01C 21/3415 Dynamic re-routing, e.g. recalculating the route when the user deviates from calculated route or after detecting real-time traffic data or accidents

Abstract

From a present position recognized by a present position recognizer (15) to a destination recognized by a destination recognizer (16), a moving path is set by a moving path finder (17) based on map data and is stored in a storage, while a map is appropriately displayed on a display portion (8). Whether a diverging position exists, in roads ahead where a vehicle runs on the moving path, within an appointed distance from the present position recognized by the present position recognizer (15) is judged. While using, as an origin, a link ID of a divergent road different from a link ID of the moving path from the diverging position, a presumed moving path to the destination is set by a presumed moving path setting portion (19). Thus, a presumed moving path is preset in case of deviation, whereby swift and satisfactory support can be provided.

Claims

1. A navigation device, comprising:

a present position recognizer for recognizing a present position of a movable body;

a destination recognizer for recognizing a destination to which said movable body moves;

a moving path finder for setting a moving path from the present position recognized by said present position recognizer to the destination recognized by said destination recognizer; and

a presumed moving path finder for setting a presumed moving path from a diverging position on said moving path in roads ahead in a moving direction of said movable body along the moving path set by said moving path finder to said destination, via a path different from said moving path.

2. The navigation device according to claim 1, wherein

said presumed moving path finder completes setting of a presumed moving path before the movable body arrives at the diverging position on the moving path.

3. The navigation device according to claim 1, wherein

said presumed moving path finder sets a presumed moving path from a diverging position which is on the moving path in roads ahead in a moving direction of the movable body and is nearest from the present position of said movable body.

4. The navigation device according to claim 1, wherein

said moving path finder searches and sets a moving path based on map data having moving road data concerning moving roads where the movable body can move, and

said presumed moving path finder sets a presumed moving path based on divergence information concerning a diverging position contained in the moving road data of said map data.

5. The navigation device according to claim 1, wherein

said moving path finder sets, if it is judged that the present position recognized by the present position recognizer is located on a presumed moving path, the presumed moving path as a moving path.

6. The navigation device according to claim 1, wherein

said presumed moving path finder releases, if it is recognized by the present position recognizer that the movable body passes through a diverging position of a presumed moving path and moves along a moving path, setting of said presumed moving path.

7. A navigation method for supporting movement of a movable body by a computer, comprising the steps of:

recognizing a present position of a movable body and a destination to which said movable body moves;

setting a moving path from the recognized present position to the recognized destination; and

setting a presumed moving path from a diverging position on said moving path in roads ahead in a moving direction of said movable body along the set moving path to said destination, via a path different from said moving path.

8. The navigation method according to claim 7, wherein

said computer completes setting of a presumed moving path before the movable body arrives at the diverging position on the moving path.

9. The navigation method according to claim 7, wherein

said computer sets a presumed moving path from a diverging position which is on the moving path in roads ahead in a moving direction of the movable body and is nearest from the present position of said movable body.

10. The navigation method according to claim 7, wherein

said computer searches and sets a moving path based on map data having moving road data concerning moving roads where the movable body can move, and also sets a presumed moving path based on divergence information concerning a diverging position contained in the moving road data of said map data.

11. The navigation method according to claim 7, wherein

said computer sets, if it is judged that the present position recognized by the present position recognizer is located on a presumed moving path, the presumed moving path as a moving path.

12. The navigation method according to claim 7, wherein

said computer releases, if it is recognized by the present position recognizer that the movable body passes through a diverging position of a presumed moving path and moves along a moving path, setting of said presumed moving path.

13. A navigation program for making a computer implements the navigation method according to claim 7.

14. A navigation program for making a computer implements the navigation method according to claim 8.

15. A navigation program for making a computer implements the navigation method according to claim 9.

16. A navigation program for making a computer implements the navigation method according to claim 10.

17. A navigation program for making a computer implements the navigation method according to claim 11.

18. A navigation program for making a computer implements the navigation method according to claim 12.

19. A recording media with a navigation program recorded, in which the navigation program according to claim 13 has been recorded so as to be readable by a computer.