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Method and apparatus for displaying navigation information

  • US 7,239,963 B2
  • Filed: 08/25/2003
  • Issued: 07/03/2007
  • Est. Priority Date: 08/26/2002
  • Status: Expired due to Fees
First Claim
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1. A vehicle navigation apparatus comprising:

  • a display;

    a database operable to store pre-update navigation data and difference data;

    a difference data receiver operable to receive difference data;

    a difference data processor configured to generate freshness information based on the received difference data and pre-update navigation data; and

    a display controller operable to generate images corresponding to map information, vehicle position, guidance information and freshness information for presentation on the display;

    wherein the freshness information comprises a data string that corresponds to a reliability assessment for location data stored in the database.

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