Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 19, 2016
Patent Application Number
14475723
Date Filed
September 3, 2014
Patent Citations Received
Patent Primary Examiner
Patent abstract
Upon determination that a mobile device is present within a first communication area, a control device maintains transmitter power output of an electromagnetic wave to be transmitted from a communication section. Further, the mobile device decreases sensitivity for receiving the electromagnetic wave such that the first communication area is narrowed to a second communication area. Then, the control device determines, based on presence/absence of a response from the mobile device, whether the mobile device is present within the second communication area.
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