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Route calculation method for a vehicle navigation system

  • US 7,680,596 B2
  • Filed: 03/30/2005
  • Issued: 03/16/2010
  • Est. Priority Date: 04/06/2004
  • Status: Active Grant
First Claim
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1. In a vehicle navigation system having an output screen, a method for calculating at least one travel route to a destination, comprising the steps of:

  • calculating a first travel route for a vehicle from a first location to said destination;

    displaying said first travel route on said output screen;

    anticipating an error by a driver of said vehicle resulting in said vehicle deviating from said first travel route to a second location that is not on said first travel route;

    calculating a second travel route for said vehicle from said second location to said destination prior to said error by said driver; and

    displaying said second travel route on said output screen in response to said error by said driver.

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