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Method and apparatus for conveying bidirectional data, power and timing signals using a single transformer

  • US 20050093731A1
  • Filed: 10/31/2003
  • Published: 05/05/2005
  • Est. Priority Date: 10/31/2003
  • Status: Active Grant
First Claim
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1. A method for conveying bidirectional data over a transformer comprising the steps of:

  • modulating an alternating current signal with outbound data;

    driving a first side of the transformer with the modulated signal;

    receiving the modulated signal from a second side of the transformer;

    extracting outbound data from the received modulated signal;

    modulating according to inbound data the load presented to the second side of the transformer when the alternating current signal is not modulated; and

    receiving inbound data by sensing said load modulation.

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