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Map Data Delivering Device, Communication Terminal, And Map Delivering Method

  • US 20070282524A1
  • Filed: 04/27/2005
  • Published: 12/06/2007
  • Est. Priority Date: 07/29/2004
  • Status: Active Grant
First Claim
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1. A map data delivering device for delivering map data to a communication terminal, comprising:

  • a map data storage method which stores, for each map component, map data composed of map component data of the map component, and update propagation range data containing the map component data of the map component and map component data of other map components that are affected by a change in the map component;

    a map delivery request receiving means which receives from the communication terminal a map delivery request containing at least area information indicating an area, a map of which is requested to be delivered;

    a map component retrieving means which searches the map data storage method for the map component data whose update propagation range data is contained, at least partially, in an area indicated by the area information contained in the map delivery request; and

    a map component delivering means which sends the map component data searched for by the map component retrieving means to the communication terminal.

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