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Satellite navigation system of which map data are partially updateable

  • US 6,766,248 B2
  • Filed: 07/25/2002
  • Issued: 07/20/2004
  • Est. Priority Date: 07/31/2001
  • Status: Expired due to Fees
First Claim
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1. A server for storing map data to be supplied to a terminal for performing navigation, both of the server and the terminal being incorporated in a satellite navigation system, the server comprising:

  • a storage for storing the map data divided into a plurality of sets of map data that are mutually-independent set by set;

    an updating unit configured to update the sets of map data stored in the server; and

    a transmitting unit configured to transmit, to the navigating terminal, information including a set of updated map data, wherein the information to be transmitted from the server to the terminal includes information indicating a type of operation to be carried out by the terminal for the update, and wherein the type of operation to be carried out by the terminal is one selected from a group of operations including replacing the entire map data with new data, partially replacing the map data by new data, partially deleting map data from the map data, and partially adding new map data to the map data, the partially replacing, partially deleting, and partially adding operations being carried out set by set.

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