Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 28, 2017
Patent Application Number
15056869
Date Filed
February 29, 2016
Patent Citations Received
Patent Primary Examiner
Patent abstract
Systems and techniques are described that can be used to determine a number of levels of a multilevel building crossed by a mobile device, that is carried by a user during an elevator trip, based on characteristics of a periodic magnetometer signal. The periodic magnetometer signal is formed, by a magnetometer of the mobile device, in response to the magnetometer traversing a portion of an iron-based periodic structure corresponding to the number of levels of the multilevel building during the elevator trip.
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