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Systems, methods, and devices for networking over high impedance cabling

  • US 10,439,848 B2
  • Filed: 10/05/2012
  • Issued: 10/08/2019
  • Est. Priority Date: 10/07/2011
  • Status: Active Grant
First Claim
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1. A system for distributing digital data and electrical power to a plurality of devices over high-impedance cables comprising:

  • a gateway device connected to a power source;

    a first device connected to the gateway device by a cable, the cable being a high-impedance cable having at least two conductive paths, and wherein the first device receives electrical power and digital data from the gateway device via the cable over the same conductive path of the cable;

    a second device connected to the gateway device by the cable wherein the second device receives power and digital data from the gateway device via the cable over the same conductive path; and

    wherein the power source provides power to the first and second devices via the cable, and wherein the second device is connected to the gateway device through the first device via a daisy-chain topology;

    wherein at least one of the first device and the second device can individually be addressed via the gateway device; and

    wherein the first device and the second device comprise a respective local clock and a media clock and are configured to receive packets of data comprising timestamp information and utilize the timestamp information contained in the packets to coordinate the correct playout time for media signals between the first device and the second device.

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