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Navigation system, program thereof and map data thereof

A navigation system, destination technology, used in traffic control systems, road network navigators, traffic control systems for road vehicles, etc.

Inactive Publication Date: 2006-08-23
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, for example, after performing this lane guidance, when the vehicle is about to enter a navigation point (which is the goal of lane guidance), the vehicle has difficulty changing lanes to the recommended lane to follow the recommended route

Method used

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  • Navigation system, program thereof and map data thereof
  • Navigation system, program thereof and map data thereof
  • Navigation system, program thereof and map data thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0034] A first embodiment of the present invention will be described below. figure 2 is a hardware configuration diagram of the navigation system 1 according to the first embodiment of the present invention. The navigation system 1 of the vehicle includes: a position sensor 11, an operation switch device 12, a visual display unit 13, a speaker 14, a random access memory (RAM) 16, a read only memory (ROM) 17, an external storage medium 18, and a central processing unit (CPU)19.

[0035] The position sensors 11 include a magnetic field sensor, a gyroscope, a speed sensor, a steering angle sensor, and a Global Positioning System (GPS) receiver (all of which are known and not shown). The position sensor 11 outputs information to the CPU 19 . This information is based on the signals of these sensors and is used to detect the current position and orientation of the vehicle.

[0036] The operation switch device 12 includes input devices such as a plurality of mechanical switches ...

no. 2 example

[0085] A second embodiment of the present invention will be described below. The structure of the navigation system 1 for a vehicle according to the present embodiment is similar to that of the first embodiment except for the map data. Furthermore, the operation of the navigation system 1 is similar to that according to the first embodiment except for the cost calculation method in the recommended route calculation process. The description will focus on the main differences between the navigation system 1 of the present embodiment and the navigation system 1 of the first embodiment.

[0086] The map data included in the navigation system 1 of the present embodiment includes a special added cost portion data table in addition to the map data in the first embodiment. The special incremental cost portion data table includes a plurality of entries, each entry associating a particular link on the map with a corresponding special incremental cost portion. Here, the specific link i...

no. 3 example

[0099] A third embodiment of the present invention will be described below. A third embodiment of the present invention will be described with reference to the drawings. Elements of the navigation system of the present embodiment that are similar to elements of the navigation system of the first embodiment will be denoted by the same reference numerals. Figure 8 is a hardware configuration diagram of the navigation system 1 according to the third embodiment of the present invention.

[0100] The navigation system 1 in the third embodiment is similar to the navigation system 1 in the above-described embodiments except for map data and programs executed by the CPU 19 . Therefore, parts different from the above-described embodiments will be mainly described.

[0101] The map data includes facility data and road data, and the data has the positions and types of links and nodes, lane information, connection relations between links and nodes. The lane information includes the nu...

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PUM

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Abstract

A navigation system for a vehicle determines a recommended route to a destination among a plurality of possible routes to the destination based on total profile values of the plurality of possible routes. The navigation system guides the vehicle to the destination along the recommended route. Here, navigation system determines whether an upstream side section of one of the plurality of possible routes is located on a multi-lane road in a specific condition. The navigation system determines whether an exit road and an entrance road are connected to the multi-lane road on a common side of the multi-lane road. The navigation system sets an amount of increase to be reflected into the total profile value of the one of the plurality of possible routes based on determination results.

Description

technical field [0001] The present invention relates to a navigation system and its program which calculates a total cost (total profile value) for each of a plurality of possible routes to a destination and determines a recommended route such that the recommended route is among the possible routes with minimal cost. The navigation system and its programming also guide the driver of the vehicle to a recommended route. The present invention also relates to a navigation system for guiding a vehicle to a recommended lane on a road (ie, lane guidance) and a program thereof. Background technique [0002] A conventional navigation system has been proposed that calculates a total cost (total attribute value) for each of multiple possible routes to a destination and determines a recommended route such that the recommended route has the minimum cost among the possible routes. The navigation system also guides the vehicle to recommended routes. The navigation system calculates the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/0969G08G1/0968G01C21/34
Inventor 川上英彦小川陆真
Owner DENSO CORP