Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2006-12-19
2006-12-19
Wu, Daniel (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S539320, C455S422100, C455S461000
Reexamination Certificate
active
07151446
ABSTRACT:
The present invention is directed to a position isolation system comprising at least one portable cellular transmitter adapted for wireless data communication via an associated cellular communication system. Data exchange between the at least one cellular transmitter and an associated tracking station is initiated via the associated cellular communication system. The data exchange obtains additional position data representing an associated, cellular relay system through which the cellular data exchange is made, enabling isolation of the location of the portable cellular transmitter in a limited geographic region. The position isolation system also includes a secondary transmission system, associated with the portable transmitter, that is adapted for outputting information representing secondary location data. The secondary location data has a positioning resolution within that of the limited geographic region.
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Culpepper Jerry W.
Smith Lawrence M.
VanCleave James P.
Bugg George
Spectrum Tracking Systems, Inc.
Tucker Ellis & West LLP
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