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:
Oct. 25, 2011
Filed:
Oct. 05, 2007
Applicants:
Zhengming Wang, Fort Wayne, IN (US);
Xianguan Zeng, Fort Wayne, IN (US);
Inventors:
Zhengming Wang, Fort Wayne, IN (US);
Xianguan Zeng, Fort Wayne, IN (US);
Assignee:
International Truck Intellectual Property Company, LLC, Warrenville, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01C 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A geofence system which locates a position as within or without the complex polygon type geofence using a simplified algorithm. The algorithm obtains a position and compares it to the polygon by establishing a ray from the position constructed in a cardinal direction of the coordinate system. The 'polarity' of the count of intersections between the ray and geofence indicates whether the position is inside the geofence or not.