To enable considerable map information services to be provided even if a memory at the terminal becomes little or detailed maps cannot be downloaded.
A server 1302 comprises a retrieval engine 403 for retrieving a map from a map DB 405, based on a destination and the current position transmitted from a terminal 1306, a route calculator 406 for calculating a route leading to the destination, a map display position setting unit 408 for determining a spot where a guide route information contg. map data is to be down- loaded on the terminal 1306, based on the calculated route, and a curtail judging unit 412 for curtailing information to be transmitted, based on terminal information from the terminal 1306. This judging unit 412 has a priority defining table for defining the priority of each map element information contained in the map DB 405.
KOGA KAZUYOSHI
MATSUO SHIGERU
SHIN YOSHITAKA
| JPH1138870A | 1999-02-12 | |||
| JPH1048320A | 1998-02-20 | |||
| JPH09331370A | 1997-12-22 | |||
| JPH1138872A | 1999-02-12 | |||
| JPH09191286A | 1997-07-22 | |||
| JPH04314081A | 1992-11-05 | |||
| JPH10173589A | 1998-06-26 | |||
| JPH10253380A | 1998-09-25 |
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