Navigational system

• US 20030225508A9
• Filed: 09/12/2001
• Published: 12/04/2003
• Est. Priority Date: 09/12/2000
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Draeger, Gerd, Petzold, Bernd
• Application Number:
  US09/960,563
• Publication Number:
  US 20020128766A1
• Time in Patent Office: Days
• US Class Current: 701/201
• CPC Class Codes: G01C 21/3453 Special cost functions, i.e. other than distance or default speed limit of road segments
• CPC Class Codes: G01C 21/3676 Overview of the route on the road map

Abstract

Proposed is a navigational system (1), which provides a user with a plurality of routes between a starting point (S) and a destination (Z) for selection. The navigational system (1) includes a calculation unit (400) for calculating a first route (5) from starting point (S) to destination (Z). It further includes a reproducing device (700) for reproducing the calculated first route (5). The calculation unit (400) calculates at least one second route (10), which differs from first route (5), from starting point (S) to destination (Z). The reproducing device (700) reproduces the at least one calculated second route (10) in addition to the first route (5).

Claims

1. A navigational system (1) having a calculation unit (400) for calculating a first route (5) from a starting point (S) to a destination (Z) and having a reproducing device (700) for reproducing the calculated first route (5), wherein the calculation unit (400) calculates at least one second route (10), which differs from the first route (5), from starting point (S) to destination (Z);

and the reproducing device (700) reproduces the at least one calculated second route (10) in addition to the first route (5).

2. The navigational system (1) as recited in claim 1, wherein a selection unit (900) for selecting one of the reproduced routes (5, 10) is provided;

and a route guidance unit (800) is provided that generates navigational information for a position between the starting point (S) and the destination (Z) on the selected route (5) and transmits the information to the reproducing device (700) for reproduction.

3. The navigational device (1) as recited in claim 1 or 2, wherein the different routes (5, 10) are reproduced on the reproducing device (700) as a function of at least one predefined route criterion.

4. The navigational system (1) as recited in claim 3, wherein the traffic jam probability, travel time, speed, route distance, fuel consumption, regions through which the calculated routes should not travel, and/or the like can be specified as route criteria at an input unit (600) or can be fixed.

5. The navigational system (1) as recited in claim 3 or 4, wherein a weighting of the at least one route criterion can be specified at the input unit (600) or can be fixed.

6. The navigational system (1) as recited in one of the preceding claims, wherein input means (605) for manipulating or changing at least one of the routes (5, 10) reproduced on the reproducing device (700) are provided, and a manipulated or altered route can be selected for route guidance.

7. The navigational system (1) as recited in one of the preceding claims, wherein a communications unit (1000) is provided that receives information regarding traffic disruptions, in particular regarding the traffic flow, on the calculated routes (5, 10);

and the reproducing device (700) reproduces this information.

8. The navigational system (1) as recited in claim 7, wherein the reproducing device (700) reproduces the information regarding the traffic disruptions in conjunction with the calculated routes (5, 10).

9. The navigational system (1) as recited in claim 7, wherein the reproducing device (700) reproduces the information regarding the traffic disruptions separately from the calculated routes (5, 10).

10. The navigational system (1) as recited in claim 7, 8, or 9, wherein the reproducing device (700) reproduces the traffic disruptions in the form of isolines (25, 30, 35, 40, 45, 50).

11. The navigational system (1) as recited in claim 7, 8, or 9, wherein the reproducing device (700) reproduces the traffic disruptions in the form of an isographic diagram (55).

12. The navigational system (1) as recited in one of claims 7 through 11, in one of the preceding claims, wherein, in response to receiving information regarding a traffic disruption on the selected route (5), the calculation unit (400) calculates at least one additional route (15, 20;

16, 17, 18), which differs from the selected route (5), starting from the instantaneous position (P) as the new starting point to the predefined destination (Z); and

the reproducing device (700) reproduces for selection the at least one calculated additional route (15, 20;

16, 17, 18) in addition to the selected route (5).

13. The navigational system (1) as recited in one of claims 7 through 12, wherein the received information also includes the type of traffic disruption, and the reproducing device (700) reproduces the type of traffic disruption.

14. The navigational system (1) as recited in one of the preceding claims, wherein the reproduction at reproducing device (700) is optical and/or acoustic.