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System and method for managing navigation information

  • US 7,146,271 B2
  • Filed: 05/19/2004
  • Issued: 12/05/2006
  • Est. Priority Date: 12/23/2003
  • Status: Expired due to Fees
First Claim
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1. A system for managing navigation information comprising:

  • an On-Board Unit (OBU) associated with a motor vehicle and comprising a central unit, the central unit capable of communicating with a wireless communications network, and communicating with a user;

    the OBU storing first navigation information;

    a service provider including a database, wherein the database includes second navigation information;

    wherein second navigation information includes more items of navigation information than first navigation information;

    wherein the service provider responds to a request for navigation information from the OBU with ordered navigation information that is sent to the OBU in a predetermined order, wherein route information is sent before other navigation information; and

    wherein the ordered navigation information includes a first region including a plurality of navigation features encoded in absolute coordinates, and a second region including a plurality of navigation features encoded in relative coordinates.

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