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System and method for transmitting control information over and AC power network

  • US 20050111560A1
  • Filed: 10/27/2004
  • Published: 05/26/2005
  • Est. Priority Date: 11/26/2003
  • Status: Active Grant
First Claim
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1. A transmission device for transmitting digital information via a power supply network, comprising of:

  • a generator for generating a simulated digital wave-form carrying the digital information to be transmitted, wherein the simulated digital wave-form is built of predetermined harmonic frequencies of a signal frequency;

    a high-voltage injector to inject the generated simulated digital wave-form carrying the digital information into the power supply network;

    wherein said high-voltage injector comprises drive stage transistors to inject the generated simulated digital wave-form carrying the digital information into the power supply network; and

    a chopping unit that rapidly turns the drive stage transistors on and off in conformance with the shape of the low frequency wave-form.

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