SYSTEM AND METHOD FOR DETECTING A DEVICE REQUIRING POWER
First Claim
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1. A power detection system, comprising:
- a detector having an output and a return; and
a device to selectively couple the detector output to the detector return when the device requires power.
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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.
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Citations
53 Claims
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1. A power detection system, comprising:
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a detector having an output and a return; and
a device to selectively couple the detector output to the detector return when the device requires power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A detecting station having an input and a return, comprising:
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a word generator couplets to the detecting station output; and
a comparator to compare the detecting station output with the detecting station return. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method for detecting a device requiring power, comprising:
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transmitting a pulse to the device;
receiving the pulse from the device; and
detecting whether the device requires power in response to the received pulse. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A transmission system, comprising:
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a transmission line interface having at least one port;
a two-way transmission line coupled to one of the ports; and
a device coupled to the two-way transmission line, the device selectively coupling the two-way transmission line together when the device requires power. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A detector having an output and a return, comprising:
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a word generator coupled to the detector output; and
a comparator to compare the detector output with the detector return. - View Dependent Claims (49, 50, 51, 52, 53)
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Specification