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US 9,960,811 B1Granted
DC bias signals isolatable from transmission protocols
AssigneeHewlett Packard Enterprise Development LP
InventorBenjamin Thomas Gaide
Life of this patent
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Abstract
An example device in accordance with an aspect of the present disclosure includes a direct current (DC) bias source coupled to a transmitter connector of a transmitter. The DC bias source is to apply, onto the transmission line, a DC bias signal isolatable from the transmission protocol by the receiver based on the receiver separating the DC bias signal from the transmission protocol without compromising the transmission protocol.
Claims17
A system comprising:
- a direct current (DC) bias source coupled to a transmitter connector of a transmitter, wherein the transmitter is to communicate over a transmission line using a transmission protocol associated with use of a transmitter alternating current (AC) coupling capacitor at the transmitter connector, and associated with a receiver AC coupling capacitor at a receiver,
- wherein the DC bias source is to apply, onto the transmission line, a DC bias signal isolatable from the transmission protocol by the receiver based on the receiver separating the DC bias signal from the transmission protocol without compromising the transmission protocol, and
- wherein, prior to the transmitter being powered on, the DC bias source is to transmit the DC bias signal to the receiver to enable the receiver to identify a logic state corresponding to the DC bias signal and determine a type of the transmission protocol to be used by the transmitter based on the logic state corresponding to the DC bias signal.
A system comprising:
- a DC signal reader coupled to a receiver connector of a receiver, wherein the receiver is to receive a communication over a transmission line using a transmission protocol associated with use of a receiver AC coupling capacitor at the receiver connector, and a transmitter AC coupling capacitor at a transmitter,
- wherein the DC signal reader is to isolate a DC bias signal in the received communication from the transmission protocol while preserving the integrity of the transmission protocol,
- wherein the DC signal reader is to identify a logic state corresponding to the isolated DC bias signal and determine a type of the transmission protocol to be used by the transmitter based on the logic state corresponding to the isolated DC bias signal, and wherein the DC bias signal is transmitted, prior to the transmitter being powered on, by a DC bias source coupled to the transmission line at the transmitter.
A method, comprising:
- establishing a connection over a transmission line between a transmitter alternating current (AC) coupling capacitor at a transmitter and a receiver AC coupling capacitor at a receiver;
- and
- prior to the transmitter being powered on, transmitting, by a direct current (DC) bias source coupled to the transmission line at the transmitter downstream of the transmitter AC coupling capacitor, a DC bias signal onto the transmission line towards the receiver to enable the receiver to identify a logic state corresponding to the DC bias signal and determine a type of transmission protocol to be used by the transmitter based on the logic state corresponding to the DC bias signal, wherein the DC bias signal is readable independent of the transmission protocol without compromising the transmission protocol, and wherein the type of the transmission protocol is determined independent of whether the transmission protocol is being actively transmitted.
Dependencies are inferred from the claim text.