System and method for detecting a device requiring power
AssigneeBroadcom Corporation
InventorsVafa Rakshani, Nariman Yousefi
Life of this patent
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Abstract
A system and technique for detecting a device that requires power is implemented with a power detection station. The power detection system includes a detector having an output and a return which are coupled together by the device when the device requires power. The detector includes a word generator for generating test pulses for transmission to the device via the detector output, and a comparator for comparing the detector output with the detector return. The power detection station has a wide variety of applications, including by way of example, a switch or hub.
Claims24
A transmission system, comprising:
- a first device comprising a transmission line interface;
- a two-way transmission line comprising first and second conductors coupled to the transmission line interface;
- and
- a second device coupled to the two-way transmission line, the second device operable to selectively couple the first and second conductors of the two-way transmission line together when the second device requires power.
A device configured to communicate with a second device via a two-way transmission line comprising first and second conductors, the device comprising:
- an interface operable to receive data from, and transmit data to, the two way transmission line;
- and
- coupling means operable to selectively couple the first and second conductors of the two-way transmission line together when the device requires power.
Dependencies are inferred from the claim text.