Method for operating a navigation system and a navigation system

• US 20100299059A1
• Filed: 07/21/2006
• Published: 11/25/2010
• Est. Priority Date: 08/19/2005
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Vogel, Andreas, Arnold, Joerg
• Application Number:
  US11/990,727
• Publication Number:
  US 20100299059A1
• Time in Patent Office: Days
• US Class Current: 701/201
• CPC Class Codes: G01C 21/34 Route searching; Route guidance
• CPC Class Codes: G08G 1/096827 where the route is computed onboard
• CPC Class Codes: G08G 1/096838 where the user preferences are taken into account or the user selects one route out of a plurality
• CPC Class Codes: G08G 1/096844 where the complete route is dynamically recomputed based on new data

Abstract

A method for operating a navigation system, in which position data is determined, a route to a destination is calculated on the basis of the position data and map data, and destination guidance instructions is created and issued according to the route. A deviation factor is ascertained for the position data and the destination guidance instructions are created as a function of the deviation factor. In addition, a navigation system 1 for carrying out the method is described.

Claims

1-15. -15. (canceled)

16. A method for operating a navigation system, the method comprising:

determining position data;

determining a route to a destination based on the position data and map data;

creating and issuing destination guidance instructions according to the route; and

determining a deviation factor for the position data, wherein the destination guidance instructions are created depending on the deviation factor.

17. The method of claim 16, wherein the deviation factor is determined as a function of at least one of the position data of a satellite-based position determination, measurement data from at least one sensor, the map data of the calculated route, and based on a stored driver profile.

18. The method of claim 16, wherein the destination guidance instructions are output at least one of visually and acoustically.

19. The method of claim 16, wherein no exact information about the distance from a next decision point is output in the destination guidance instructions when the deviation factor reaches a certain value.

20. The method of claim 16, wherein a plurality of destination guidance instructions are chained together so that the destination guidance instruction referring to a next decision point on the route is created as a function of the position data and the deviation factor, and the destination guidance instructions referring to subsequent decision points are created as a function of respective previous decision points.

21. The method of claim 16, wherein the destination guidance instructions are issued at certain distances before the next decision point, and the distances become greater as the deviation factor grows.

22. The method of claim 16, wherein when a map segment appears on a display, the map segment is enlarged when the deviation factor reaches a certain value.

23. The method of claim 22, wherein the map segment is displayed in a two-dimensional north plan view.

24. The method of claim 16, wherein a warning is issued when the deviation factor exceeds a certain threshold.

25. The method of claim 16, wherein when the deviation factor reaches a specified value, a plausibility check based on the map data is performed, and the destination guidance instructions are created depending on the plausibility check.

26. A navigation system, comprising:

an input device for inputting a destination;

at least one position-determining device for determining position data;

a memory for storing map data of a road network;

a data processing device for determining a route to the destination based on the position data and map data, and for creating destination guidance instructions depending on the route; and

an output device for the destination guidance instructions;

wherein the data processing device is configured to determine a deviation factor for the position data, and to create the destination guidance instructions depending on the deviation factor.

27. The navigation system of claim 26, wherein at least one of a display and a speaker is provided as the output device.

28. The navigation system of claim 26, wherein the position-determining device includes a satellite-based positioning system.

29. The navigation system of claim 26, wherein there is at least one additional sensor as an additional position-determining device.

30. The navigation system of claim 29, wherein a stored driver profile is provided as an additional position-determining device.