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Electronic navigation system and method

  • US 20080070559A1
  • Filed: 10/30/2007
  • Published: 03/20/2008
  • Est. Priority Date: 06/24/1994
  • Status: Active Grant
First Claim
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1. A system for providing geographic information comprising:

  • a base unit having a geographic database;

    a mobile unit; and

    a communications link to transmit a request from the mobile unit to the base unit and to transmit a response from the base unit to the mobile unit;

    wherein said base unit receives said request comprising an origin of said mobile unit, a point of interest category and a traveling distance limit, identifies paths represented in the geographic database searching outward from said origin over which the mobile unit could travel to a point of interest matching said point of interest category;

    evaluates a driving distance for said identified paths to said point of interest matching said point of interest category to identify a point of interest matching said point of interest category and having said driving distance less than said driving limit, and provides a response to said mobile unit identifying said point of interest matching said point of interest category and having said driving distance less than said driving distance limit.

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