System and method for electronically signalling along a fence line
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United States of America Patent
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-
Jun 28, 2005
Grant Date -
N/A
app pub date -
Oct 14, 1999
filing date -
Oct 15, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for electronically signalling along a fence line, comprising one or more transmitter device(s) for connection to the fence line from which control signals or information may be sent along the fence line and one or more receiver device(s) for connection to the fence line to receive control signals. Each transmitter device includes transmission means arranged to form the control signal(s) or information as one or more data blocks, generate a carrier frequency, and phase modulate the carrier with the signal and apply the phase modulated carrier to the fence line. Each receiver device includes means arranged to demodulate the transmitted signal to recover the data block(s) and process the data block(s) to recover the control signals(s) or information. The system is adapted to work with both electric and non-electric fence lines.
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