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Systems and methods for providing device-to-device handshaking through a power supply signal

  • US 8,812,883 B2
  • Filed: 09/15/2012
  • Issued: 08/19/2014
  • Est. Priority Date: 06/15/2007
  • Status: Active Grant
First Claim
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1. A method for informing a second device it is connected to a first device, the method comprising:

  • receiving a power supply signal, wherein the power supply signal has a first characteristic or a second characteristic;

    detecting that the received power supply signal having the first characteristic has been received for at least a pre-determined amount of time;

    after detecting that the received power supply signal having the first characteristic has been received for the pre-determined amount of time, providing a series of predetermined current pulses to the power supply signal; and

    receiving the power supply signal having the second characteristic while the series of predetermined current pulses are provided on the power supply signal.

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