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Apparatus and method for processing and displaying traffic information in an automotive navigation system

  • US 7,289,039 B2
  • Filed: 03/23/2006
  • Issued: 10/30/2007
  • Est. Priority Date: 09/10/2004
  • Status: Expired due to Fees
First Claim
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1. A method for maintaining road segment data in a vehicle navigation system comprising the steps of:

  • creating a historic traffic flow database containing traffic flow data for the road segments,receiving current road segment traffic flow data,storing said received data in a current traffic flow database,periodically updating the historic traffic flow database for each road segment by calculating traffic flow data for each road segment as a function of said historic traffic flow database data and said current traffic flow database data, by determining the average speed for the road segment, and determining the statistical variance for the road segment; and

    thereafter replacing the historic traffic flow database data with the calculated traffic flow data.

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  • 3 Assignments
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