The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2006
Filed:
Sep. 22, 2003
Applicants:
Narayanan Alwar, Bloomingdale, IL (US);
Mike Milici, Chicago, IL (US);
Bishnu Phuyal, DesPlaines, IL (US);
Inventors:
Narayanan Alwar, Bloomingdale, IL (US);
Mike Milici, Chicago, IL (US);
Bishnu Phuyal, DesPlaines, IL (US);
Assignee:
Navteq North America, LLC, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 21/26 (2006.01);
U.S. Cl.
CPC ...
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.