Title:
経路案内システム
Document Type and Number:
Japanese Patent JP4304864
Kind Code:
B2
Abstract:
In order to enable a location function for telling the present position on a screen as a function usually used when traveling in a known area to be always used by its lone, a navigation apparatus 100 mounted on a car stores display map data in it, and displays a map of an area around a present position and the present position together on a display portion 106. It is attained to reduce the amount of stored data and the burden of processing on the navigation apparatus 100 by receiving a traveling route to a destination from a center apparatus 150 in case that a traveling route guidance to the destination is needed. Data of the whole traveling route to a destination are not transmitted at one time but data of only a traveling route from the present position to a specific distance ahead are transmitted at one time and thereby it is possible to reduce the amount of data of communication and start the car earlier. And by newly finding a traveling route to the destination before each transmission of a divided route, it is possible to transmit the optimum traveling route in consideration of the latest traffic information.
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Inventors:
Shoji Yokoyama
Application Number:
JP2000615564A
Publication Date:
July 29, 2009
Filing Date:
April 28, 2000
Export Citation:
Assignee:
Equus Research Co., Ltd.
International Classes:
G01C21/00; G01C21/34; G08G1/0968; G08G1/0969
Domestic Patent References:
| JP7225897A | ||||
| JP10281801A | ||||
| JP7192195A | ||||
| JP10319840A |
Attorney, Agent or Firm:
Takashi Kawai
Hitoshi Nakano
Hitoshi Nakano