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Hafe-duplex two-wire DC power-line communication system

  • US 5,986,539 A
  • Filed: 06/08/1998
  • Issued: 11/16/1999
  • Est. Priority Date: 06/08/1998
  • Status: Expired due to Fees
First Claim
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1. A powerline communication system, comprising:

  • a first station that continuously supplies operating power to a remotely located second station over a two-wire interconnecting circuit;

    an isolation transformer with a primary winding connected in series with said two-wire interconnecting circuit and providing a baseband receiver signal output in a secondary winding;

    a switching transistor connected across said two-wire interconnecting circuit and providing for an intermittent shunting of said operating power with pulse durations and pulse repetitions that produce a corresponding signal in said secondary winding;

    an input multiplexer for receiving a plurality of data signals into a single sequence of patterned pulses connected to an input gate of the switching transistor; and

    an output demultiplexer connected to receive a signal from said secondary winding of the isolation transformer and providing for a reconstruction of an original data presented on each of said plurality of data channels.

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