Navigation apparatus and server apparatus
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United States of America Patent
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Mar 23, 2010
Grant Date -
Apr 13, 2006
app pub date -
Jun 13, 2003
filing date -
Sep 24, 2002
priority date (Note) -
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Abstract
A navigation apparatus acquires geographic information from a server apparatus. When the navigation apparatus does not store any geographic information that provides a continuous route from the starting point to a destination point, it transmits data of the starting point and destination point to the server apparatus to acquire therefrom geographic information that provides a continuous route from the starting point to the destination point. This efficient acquisition of geographic information realizes reduction of communication time and communication costs.
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