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:
Jan. 21, 2020
Filed:
Feb. 27, 2019
Northern Digital Inc., Waterloo, CA;
Jose Alarcon Herrera, Waterloo, CA;
Andrew Wiles, Waterloo, CA;
Asli Dinc, Waterloo, CA;
Martin Kopcik, Waterloo, CA;
Northern Digital Inc., Ontario, CA;
Abstract
An electromagnetic tracking (EMT) system includes a tracked device, a tracking device, and a computing device. The EMT system is configured to receive, at the tracking device, an electromagnetic signal generated by the tracked device, determine, based on the electromagnetic signal, a set of possible positions and orientations of the tracked device relative to the tracking device, receive a measured inertial value representing a motion of the tracked device, determine an estimated inertial value corresponding to the motion of the tracked device based on at least one position and orientation of the set of possible positions and orientations, determine a difference value representing a difference between the estimated inertial value and the measured inertial value, determine a particular position and a particular orientation from the set in response to determining the difference value, and generate an output including the particular position and particular orientation.