Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Mike Milici0
Bishnu Phuyal0
Narayanan Alwar0
Date of Patent
April 25, 2006
0Patent Application Number
106676990
Date Filed
September 22, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for collecting data for a geographic database is disclosed. Altitude data are collected using a vehicle traveling in a geographic region. A barometer associated with the vehicle supplies the altitude data. Road grade data along the roads traveled by the vehicle is derived by analyzing the altitude data. The geographic database is updated to indicate the road grade.
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