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Device location determination

Invented by: George Hsu
Boca Raton, FL Applicant: Name City State Country Type Hsu

Originally Assigned to: PNI Sensor Corporation
Santa Rosa, CA Family ID: 1000001282062
[Now assigned to . . .]

Issued:2015-08-18
Filed:2013-12-14
Application No:14106724
Examined by:Frejd; Russell

Methods, apparatuses and systems of estimating a location of a device are disclosed. One method includes determining a first position of the device, sensing at least one magnetic anomaly at the first position, estimating a location of the magnetic anomaly relative to the first position by determining a plurality of magnetic properties of the magnetic anomaly based on sensed signals of at least a magnetic sensor, and estimating a second position of the device based on a sensed change in a distance from the magnetic anomaly to the device.

[pdf] U.S. Pat. No. 9,109,905

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