Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2004-08-20
2008-11-04
Trieu, Van T. (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S539230, C340S539130
Reexamination Certificate
active
07446656
ABSTRACT:
A method and apparatus for operating a monitoring unit operable to receive signals from a mobile transmitter in an electronic location monitoring system involves causing a first receiver to change a signal reception threshold thereof for receiving signals from the mobile transmitter, in response to proximity of the monitoring unit relative to a reference position whereby the receiver rejects signals received from the mobile transmitter that have a signal strength below the signal reception threshold and receives and processes signals received from the mobile transmitter that have a signal strength above the signal reception threshold. Alternatively, detection of a first monitoring unit in proximity to a second monitoring unit may cause the second monitoring unit to take over receiving signals from the mobile transmitter while the first monitoring unit is put into a low power mode.
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Kolisch & Hartwell, P.C.
Strategic Technologies Inc.
Trieu Van T.
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