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:
Mar. 15, 2016
Filed:
Apr. 05, 2012
Applicants:
Muhammad Haris Afzal, Vancouver, CA;
Valerie Renaudin, Calgary, CA;
Gerard Lachapelle, Calgary, CA;
Inventors:
Assignee:
UTI LIMITED PARTNERSHIP, Calgary, Alberta, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 21/16 (2006.01); G01C 25/00 (2006.01); G06F 17/00 (2006.01); G01C 21/20 (2006.01);
U.S. Cl.
CPC ...
G01C 21/165 (2013.01); G01C 25/005 (2013.01); G01C 21/20 (2013.01); G06F 17/00 (2013.01);
Abstract
Methods and systems for compensating for gyroscopic errors. A system uses magnetometers to detect and measure a magnetic field local to a personal navigation device. When the local magnetic field is quasi-static, the rate of change of the magnetic field is combined with the rotational rate of change of the device. This generates an estimated gyroscope error. The error can then be used to correct for time-varying inherent gyroscope errors.