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Methods and apparatus for powering a data communications port

  • US 6,952,785 B1
  • Filed: 03/04/2002
  • Issued: 10/04/2005
  • Est. Priority Date: 03/04/2002
  • Status: Expired due to Fees
First Claim
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1. A data communications device, comprising:

  • a supervisory circuit;

    a power supply; and

    a power circuit coupled to the supervisory circuit and the power supply, the power circuit including;

    a data communications port,a power supply connection coupled to the power supply, anda power controller coupled to the data communications port and the power supply connection, the power controller being configured to;

    provide a power signal from the power supply connection to the data communications port in response to communication with the supervisory circuit,lose communication with the supervisory circuit for a period of time, andafter losing communication with the supervisory circuit for the period of time, selectively (i) continue to provide the power signal from the power supply connection to the data communications port when a local parameter has a first value, and (ii) discontinue providing the power signal from the power supply connection to the data communications port when the local parameter has a second value.

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