Power supply system and method using analog coupling circuitry for power-line communications
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United States of America Patent
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Issued Date -
Jul 8, 2004
app pub date -
Sep 23, 2003
filing date -
Sep 25, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Coupling circuitry implemented with passive components is added to a conventional power supply to enable communications access to a power-line network by a device designed for power-line communications ('PLC device'), in order to achieve certain benefits including minimizing costs. Conventional PLC devices access the power-line network via coupling circuitry built into the PLC device and a separate cable that connects the PLC device to a power outlet. With this invention the PLC device may use the coupling circuitry that is built into a host's existing power supply, thus providing at least two distinct advantages: 1) only one cable is necessary to connect the host device to the power-line network, and 2) the design of the PLC device is simplified since it is not connected to high-voltage line.
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