Power extraction from signal sinks

A method of extracting power, the method comprising:

• receiving a signal from a sink side of a signal channel, wherein the signal channel is independent of any power supply signal;
• detecting a voltage drop on the signal using a high impedance current source;
• generating a first regulated supply from a first regulator circuit using a current derived from the signal channel via the high impedance current source;
• and
• generating a second regulated supply from the first regulated supply using a second regulator.

A cable connection module, comprising:

• a connector channel coupled to a sink, wherein the connector channel comprises a signal channel that is independent of any power supply signal;
• and
• a power extractor circuit coupled to the connector channel proximate to the sink, the power extractor circuit being configured to extract power from the signal channel, wherein the power extractor circuit comprises:
• a high impedance current source coupled to the signal channel, wherein signal quality is maintained within the signal channel;
• a linear drop regulator configured to generate a first regulated supply from a current derived from the signal channel using the high impedance current source;
• and
• a switching regulator coupled to the linear drop regulator, wherein the switching regulator is configured to generate a second regulated supply from the first regulated supply.