Abstract: An apparatus and method of determining bearing and distance measurements between a mobile device and an object using Rf based measurements. The mobile device communicates with a control in the object to determine the relative bearing between the mobile device and the object with respect to magnetic north and, optionally, the distance between the mobile device and the object. An indicator on the mobile device aid in directing s the user of the mobile device toward the object as the mobile device is moved relative to the object. The mobile device can be a key fob and the object can be a vehicle.
Type:
Grant
Filed:
April 30, 2012
Date of Patent:
July 22, 2014
Assignee:
Global ID Technology, LLC
Inventors:
Craig A. Tieman, Lev M. Vitkin, Fiean Liem, Curtis Paul Houllion