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:
Feb. 12, 2013
Filed:
Aug. 03, 2011
Selcuk Mazlum, Leesburg, VA (US);
John Carlson, Dulles, VA (US);
Martin Alles, Vienna, VA (US);
George Maher, Herndon, VA (US);
Selcuk Mazlum, Leesburg, VA (US);
John Carlson, Dulles, VA (US);
Martin Alles, Vienna, VA (US);
George Maher, Herndon, VA (US);
Andrew LLC, Hickory, NC (US);
Abstract
A method and apparatus for estimating a location of a device. For each of a plurality of locations of a device, a set of positional data is determined from signals received from a plurality of satellites. The positional data is filtered and compared with data from a road network database. This comparison may be a function of a distance from at least one point defined by a set of the filtered positional data to a road in the road network database and an angle between a line representing a best fit for plural points defined by corresponding plural sets of the filtered positional data to a line defined by a road in the road network database.