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Navigation system

A technology for navigation equipment and navigation routes, which is applied in navigation, surveying and mapping and navigation, road network navigators, etc., and can solve problems such as the difficulty of zooming in on navigation maps

Inactive Publication Date: 2004-08-18
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficulty in representing the current position or in enlarging navigation maps representing intersections cannot therefore be avoided when the navigation device is moving on a route different from the navigation route

Method used

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Embodiment Construction

[0018] figure 1 The overall structure of the navigation device 20 according to one embodiment of the present invention is shown, and the server 10 according to one embodiment of the present invention is also shown.

[0019] The navigation device 20 installed on the vehicle is equipped with: a position detector 21 for outputting a signal for detecting the current position of the vehicle, etc.; a manipulation switch group 22 for the user to input different commands; A remote controller 23a physically separated from the navigation device 20 for instructions; a control sensor 23b for receiving a signal from the remote controller 23a; an external information I / O unit 24 communicating with the server 10; a map data input unit 25 for receiving data from the A storage medium for map data or various information input information; a display 26 for displaying a map or various information; a speaker 27 for outputting various navigation sounds; and a control circuit 29 .

[0020] Accordin...

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Abstract

In a navigation device, matching is executed between road shape data read from a map data storage medium and road shape data included in guidance route data received from a server. Road data relevant to that of the guidance route data is thereby designated from the road data stored in the map data storage medium. Connection relation of the road data between the map data storage medium and the guidance route is then established. This results in eliminating a problem that it is difficult for the navigation device to indicate a correct present position when the navigation device moves along a route different from the guidance route.

Description

technical field [0001] The present invention relates to a navigation device that performs various navigation processes, a navigation device that uses a network to obtain navigation route data to perform route guidance. Background technique [0002] In the navigation device, the road data should be updated as the actual road state changes are reflected due to the opening of new roads or widening of roads. Typically, data is updated by replacing or rewriting a fixed storage medium such as a CD-ROM, DVD-ROM or hard disk. This requires periodic troublesome updates. Road data in fixed storage media becomes unreliable when periodic updates are not performed. [0003] To solve this problem, for example, Japanese Patent Document JP-A-H5-216400 describes a method. In this method, change data of the map information is stored together with the map information. Every time the map information is used, it is determined whether the current time is earlier than the stored update date. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B29/00B60R99/00G01C21/00G01C21/30G01C21/34G08G1/0968G08G1/137G09B29/10
CPCG01C21/30G01C21/34
Inventor 铃木孝光
Owner DENSO CORP