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:
Apr. 01, 2014
Filed:
Feb. 28, 2013
Applicant:
Hillcrest Laboratories, Inc., Rockville, MD (US);
Inventors:
Hua Sheng, Rockville, MD (US);
Matthew G. Liberty, Gaithersburg, MD (US);
Christopher D. Roller, Baltimore, MD (US);
Charles W. K. Gritton, Sterling, VA (US);
Assignee:
Hillcrest Laboratories, Inc., Rockville, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 3/028 (2006.01); G01R 29/00 (2006.01); G06F 3/0346 (2013.01); G06F 19/00 (2011.01);
U.S. Cl.
CPC ...
Abstract
A bias value associated with a sensor, e.g., a time-varying, non-zero value which is output from a sensor when it is motionless, is estimated using at least two, different bias estimating techniques. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.