×

Map evaluation system, collation device, and map evaluation device

  • US 20040122590A1
  • Filed: 12/09/2003
  • Published: 06/24/2004
  • Est. Priority Date: 12/20/2002
  • Status: Active Grant
First Claim
Patent Images

1. A map evaluation system comprising:

  • a map database storing a road map;

    map collating means for determining, by collating a road location with a vehicle position path, whether a difference is present between the vehicle position path and the road location and for then generating difference information indicating a location of the difference when the difference is determined to be present, wherein the vehicle position path is detected by a vehicle position detecting unit while the road location is indicated on the road map corresponding to the vehicle position path;

    difference accuracy information obtaining means for obtaining accuracy information used for determining degree of accuracy for the difference information;

    difference accuracy determining means for executing determination of the degree of accuracy for the difference information based on the accuracy information;

    map evaluating means for executing evaluation of degree of credibility for a portion of the road map based on a result of determination of the degree of accuracy executed by the difference accuracy determining means, wherein the portion of the road map corresponds to the location of the difference; and

    outputting means for outputting a result of the evaluation of the degree of credibility executed by the map evaluating means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×