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COMMUNICATION SYSTEM

  • US 20150123575A1
  • Filed: 01/09/2015
  • Published: 05/07/2015
  • Est. Priority Date: 06/15/2011
  • Status: Active Grant
First Claim
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1. A communication system comprising:

  • an input comprising a positive terminal and a negative terminal to receive a continuous voltage from a voltage generator, wherein the input is coupled to an output comprising a positive terminal and a negative terminal;

    a current regulator configure to limit the supply current provided by the voltage generator to the output to a maximum value;

    a communication interface connected in parallel with the output, wherein the electrical impedance between the positive terminal and the negative terminal of the output is varied to transmit data; and

    a control circuit configured to detect the output voltage between the positive terminal and the negative terminal of the output, and to vary the maximum value of the supply current provided by the voltage generator as a function of the detected output voltage.

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