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US 7,583,703 B2Granted
System and method for power injection and out of band communications on shared medium
AssigneeCisco Technology, Inc.
InventorsRobert Bowser, Steven Cloud, Chad Jones
Life of this patent
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Abstract
In one embodiment, in a power injection and out of band communications on a shared medium system, the system is configured to receive a power signal. Concurrently, the system is configured to receive a data signal. The system is configured to transfer the power and data signals simultaneously on a shared medium.
Claims15
A method, comprising:
- receiving a power signal from a power input;
- receiving a data signal from a data input;
- receiving an Ethernet primary communication signal;
- sending the Ethernet primary communication signal to a network device on a first medium;
- sending a discovery signal to the network device on a second medium;
- receiving a discovery response from the network device via the second medium that is responsive to the discovery signal;
- receiving an Ethernet secondary data signal;
- converting the Ethernet secondary data signal into a bit-stream second data signal;
- multiplexing the data signal and the second data signal for transmission on the second medium;
- and
- concurrently providing a power signal modulated with a data signal and the second data signal to the network device on the second medium after receiving the discovery response signal.
8 more elements
An apparatus comprising:
- a power input for receiving a power signal;
- a primary communication input for receiving an Ethernet primary communication signal;
- a data input for admitting a data signal;
- a modem for modulating the data signal with the power signal;
- a discovery signal generator coupled to the modem;
- a discovery signal detector coupled to the modem;
- wherein the Ethernet primary communication signal is provided to a network device on a first medium;
- wherein the data signal and the power signal are provided to the network device on a second medium;
- wherein the discovery signal generator is configured to send a discovery signal to the network device through the modem on the second medium;
- wherein the discovery signal detector is configured to detect a discovery response signal responsive to the discovery signal via the modem;
- and
- wherein the discovery signal detector is responsive to detecting a discovery response signal to have the power signal provided to the network device on the second medium.
9 more elements
An apparatus, comprising:
- a power input for receiving a power signal;
- a primary communication input for receiving an Ethernet primary communication signal;
- a data input for admitting a data signal;
- a second primary communication input for receiving an Ethernet secondary communication signal;
- a first output coupled on a first medium to the network device;
- a second output coupled on a second medium to the network device;
- means for multiplexing the data signal and the Ethernet secondary communication signal;
- means for modulating the multiplexed data signal and Ethernet secondary communication signal with the power signal;
- a discovery signal generator;
- a discovery signal detector;
- wherein the Ethernet primary communication signal is provided to the network device on the first output;
- wherein the means for modulating provides the power signal, data signal and Ethernet secondary communication signal on the second output;
- wherein the discovery signal generator is responsive to send a discovery signal to the network device through the means for modulating on the second output;
- wherein the discovery signal detector is configured to receive a discovery response signal that is responsive to the discovery signal via the means for modulating;
- and
- wherein the means for modulating is responsive to provide the power signal to the network device after receiving the discovery response signal.
13 more elements
Dependencies are inferred from the claim text.