Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2006-12-18
2009-12-29
Trieu, Van T. (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S539110, C340S539130
Reexamination Certificate
active
07639131
ABSTRACT:
A method for tracking objects in a way that conserves power resources. The method can establish a designed range defining a safe area based upon the broadcast signal of an anchor beacon. When the tracking device is within the designed range, the tracking device can be placed in a mode of low power consumption. Should the tracking device move outside of the designated range, then the tracking device can be placed in mode for active tracking. The level of power consumption can be achieved by only enabling a WAN transceiver in the active tracking mode.
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Murray B et al, “Location Tracking System with Hand-Off Capabilities”, Motorola Technical Developments, May 1, 1996, pp. 168-173, Schumburg, IL, US.
Eaton Eric T.
Hayes David J.
Mock Von A.
Buchheit Brian K.
Garrett Scott M.
Motorola Inc.
Patents On Demand PA
Trieu Van T.
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