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Time-domain multiplexing of power and data

  • US 9,774,207 B2
  • Filed: 09/15/2014
  • Issued: 09/26/2017
  • Est. Priority Date: 05/03/2011
  • Status: Active Grant
First Claim
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1. A method of operating an electronic device, the method comprising:

  • with a detection circuit in the electronic device, detecting a connection of a power adapter at a receptacle of the electronic device;

    with a power circuit in the electronic device, drawing a first level of power from the power adapter over a first conductor;

    with the power circuit in the electronic device, reducing the level of power drawn from the power adapter to a second level over the first conductor;

    with a controller in the electronic device, sending a first signal to the power adapter over the first conductor;

    after sending a first signal to the power adapter over the first conductor, with a controller in the electronic device, receiving a second signal from the power adapter over the first conductor; and

    with the power circuit in the electronic device, in response to receiving the second signal from the power adapter over the first conductor, resuming drawing the first level of power from the power adapter over the first conductor.

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