×

Method and apparatus for determining vehicle position on a map

  • US 6,865,485 B2
  • Filed: 03/10/2003
  • Issued: 03/08/2005
  • Est. Priority Date: 08/23/2002
  • Status: Active Grant
First Claim
Patent Images

1. A method for determining a vehicle position on a map, comprising:

  • determining a distance to a reflecting object by scanning ultrasonic waves in one or more predetermined upward directions, the one or more predetermined upward directions comprising at least one generally vertical direction; and

    determining, based upon the distance to the reflecting object, a type of road on a map on which the vehicle is running.

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