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Vehicle navigation system

  • US 5,646,856 A
  • Filed: 09/26/1991
  • Issued: 07/08/1997
  • Est. Priority Date: 06/08/1989
  • Status: Expired due to Term
First Claim
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1. Vehicle navigation system for a vehicle operable by an operator, comprising:

  • means for storing data representing a road map including roads and junctions of said roads over which said vehicle can travel and a plurality of available routes over said roads;

    means for processing and at least partly displaying said data representing said road map, said means for processing and displaying being connected to said means for storing;

    manually operable means for following said data displayed on said means for processing and displaying so as to select a desired route for travel of said vehicle, wherein said desired route is not necessarily one of said available routes;

    input means for storing said desired route selected by operation of said manually operable means;

    correlation means for comparing said desired route stored in said input means with said available routes in said means for storing data to find a selected route of said available routes closest to said desired route;

    memory means for storing said selected route connected to said correlation means; and

    control means connected to said memory means for displaying said selected route.

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