Method for selecting map information, and navigation device

• US 20040030495A1
• Filed: 08/12/2003
• Published: 02/12/2004
• Est. Priority Date: 06/19/2000
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kelch, Lutz, Busse, Michael, Draeger, Gerd
• Granted Patent: US 6,941,221 B2
• Time in Patent Office: Days
• US Class Current: 701/209
• 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
• CPC Class Codes: G01C 21/3889 Transmission of selected map data, e.g. depending on route

Abstract

Proposed is a method and a navigation device, a method for selecting map information from a digital map on the basis of a predefined polyline being used on the digital map, and, in addition to the information defined by the polyline, the map information including further information regarding a route corridor.

Claims

1. A method for selecting map information from a digital map, starting out from a predefined polyline on the digital map;

in addition to the information defined by the polyline, the selected map information includes a route corridor as a function of at least one parameter;

wherein the at least one parameter provides for the selected map information being tolerant of one error, in which case a driver is then guided on a side route or alternate route.

2. The method as recited in claim 1,

wherein the at least one parameter provides for the selected map information being tolerant of two errors.

3. The method as recited in one of the preceding claims,

wherein the at least one parameter provides for the map information being tolerant of multiple errors in the starting and destination regions (105, 205) of the polyline.

4. The method as recited in one of claims 1-3,

wherein the at least one parameter provides for the selected map information being tolerant of one, two, or multiple errors as a function of the class of road.

5. The method as recited in one of the preceding claims,

wherein the at least one parameter provides for the selected map information containing navigational instructions.

6. The method as recited in claim 5,

wherein the navigational instructions lead [one] back to the polyline on the shortest, quickest, or most efficient route (side route) and/or lead to the destination (alternate route).

7. Use of a navigation device having a memory and a navigation computer, the map information selected according to one of the preceding claims being stored in the memory,

wherein navigational instructions may be generated from the map information, using the navigation computer.

8. Use of a navigation device having a memory, the map information selected according to claim 5 or 6 being stored in the memory,

wherein the navigational instructions are usable for navigation.