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:
Jun. 27, 2017
Filed:
Dec. 29, 2015
Yotta Navigation Corporation, Santa Clara, CA (US);
William James Deninger, San Mateo, CA (US);
Andrew John Zaydak, Sunnyvale, CA (US);
Joseph Martin Schlesselman, Santa Clara, CA (US);
YOTTA NAVIGATION CORPORATION, Santa Clara, CA (US);
Abstract
A system for identifying human motion of a subject may comprise: a sensor platform attached to the subject; an attitude filter that receives sensor data and calculates the attitude and heading of the platform; a feature construction and aggregation unit that receives the sensor data and the attitude and heading to calculate a feature vector for a human motion model, an evaluation unit that receives feature vectors and calculates the probability that an instance of a specific human motion occurred; wherein the feature vector comprises: one or more feature constructions, X, such as: forces along and perpendicular to the gravity field direction; a magnitude of rotations perpendicular to the gravity field direction; an adjusted pressure altitude; one or more feature constructions which are time derivatives dX/dt; and one or more feature constructions which are derivatives V(dX/dt), wherein: V(x)=2*H(x)−1, H(x)=+1 (x>0), 0 (x<0), and x is dX/dt.