Active resistance summer for a transformer hybrid
First Claim
1. An electrical circuit in a communications channel, comprising:
- a first sub-circuit having a first input which receives a composite signal that includes a transmission signal component and a receive signal component, a second input which receives a replica transmission signal, a third input which receives an analog baseline correction current, and an output which provides a receive signal which comprises the composite signal minus the replica signal; and
a second sub-circuit for controlling the analog baseline correction current, so that the magnitude of the composite signal does not exceed a predetermined value of an operating parameter of the electrical circuit,wherein the composite signal, the replica transmission signal, and the analog baseline correction current are directly connected together at a common node of the first sub-circuit.
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0 Petitions
Accused Products
Abstract
An electrical circuit in a communications channel includes a first sub-circuit having a first input which receives a composite signal that includes a transmission signal component and a receive signal component, a second input which receives a replica transmission signal, a third input which receives an analog baseline correction current, and an output which provides a receive signal which comprises the composite signal minus the replica signal. A second sub-circuit for controls the analog baseline correction current, so that the magnitude of the composite signal does not exceed a predetermined value of an operating parameter of the electrical circuit. The composite signal, the replica transmission signal, and the analog baseline correction current are directly connected together at a common node of the first sub-circuit.
301 Citations
108 Claims
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1. An electrical circuit in a communications channel, comprising:
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a first sub-circuit having a first input which receives a composite signal that includes a transmission signal component and a receive signal component, a second input which receives a replica transmission signal, a third input which receives an analog baseline correction current, and an output which provides a receive signal which comprises the composite signal minus the replica signal; and a second sub-circuit for controlling the analog baseline correction current, so that the magnitude of the composite signal does not exceed a predetermined value of an operating parameter of the electrical circuit, wherein the composite signal, the replica transmission signal, and the analog baseline correction current are directly connected together at a common node of the first sub-circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electrical circuit in a communications channel, comprising:
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an active resistive summing circuit which produces a receive signal as a difference between a composite signal and a replica transmission signal, the composite signal comprising a transmission signal component and a receive signal component; and an analog baseline correction current control circuit which controls the magnitude of the composite signal, wherein the composite signal, the replica transmission signal, and an output of the analog baseline correction current are directly connected together at a common node of the active resistive summing circuit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An electrical circuit in a communications channel, comprising:
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an active resistive summer having a first input which receives a composite signal that includes a transmission signal component and a receive signal component, a second input which receives a replica transmission signal, a third input which receives an analog baseline correction current, and an output which provides a receive signal which comprises the composite signal minus the replica signal; and a baseline correction current control circuit which controls the magnitude of the analog baseline correction current to thereby control the magnitude of the composite signal, wherein the composite signal, the replica transmission signal, and the analog baseline correction current are directly connected together at a common node of the active resistive summer. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A communication method for a communications channel, comprising:
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receiving at a first input a composite signal that includes a transmission signal component and a receive signal component; receiving at a second input a replica transmission signal; receiving at a third input an analog baseline correction current; providing an analog baseline correction current to substantially prevent the magnitude of the composite signal from exceeding a predetermined value of an operating parameter of the electrical circuit; and providing a receive signal comprising the composite signal minus the replica signal at an output, wherein the composite signal, the replica transmission signal, and the analog baseline correction current are directly connected together at a common node. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A communication method for a communications channel, comprising:
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producing a receive signal as a difference between a composite signal and a replica transmission signal, the composite signal comprising a transmission signal component and a receive signal component; controlling the magnitude of the composite signal; receiving at a first input a first differential component of the composite signal; receiving at a second input a second differential component of the composite signal; receiving at a third input a common-mode voltage signal; and providing at an output a baseline correction current control signal to control an analog baseline correction current, wherein the composite signal, the replica transmission signal, and the baseline correction current control signal are directly connected together at a common node. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A method for a communications channel comprising:
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receiving at a first input a composite signal that includes a transmission signal component and a receive signal component; receiving at a second input a replica transmission signal; receiving at a third input an analog baseline correction current; controlling the magnitude of the analog baseline correction current to thereby control the magnitude of the composite signal; and providing at an output a receive signal which comprises the composite signal minus the replica signal, wherein the composite signal, the replica transmission signal, and the analog baseline correction current are directly connected together at a common node. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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73. An electrical circuit for a communications channel, comprising:
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means for receiving at a first input a composite signal that includes a transmission signal component and a receive signal component; means for receiving at a second input a transmission signal; means for receiving at a third input an analog baseline correction current; means for providing a receive signal comprising the composite signal minus the replica signal; and means for providing the analog baseline correction current to substantially prevent the magnitude of the composite signal from exceeding a predetermined value of an operating parameter of the electrical circuit, wherein the composite signal, the transmission signal, and the analog baseline correction current are directly connected together at a common node. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80, 81, 82, 83)
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84. An electrical circuit for a communications circuit, comprising:
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means for producing a receive signal as a difference between a composite signal and a replica transmission signal, the composite signal comprising a transmission signal component and a receive signal component; means for controlling the magnitude of the composite signal; means for receiving at a first input a first differential component of the composite signal; means for receiving at a second input a second differential component of the composite signal; means for receiving at a third input a common-mode voltage signal; and means for providing at an output analog baseline correction current control signal, wherein the composite signal, the replica transmission signal, and the analog baseline correction current control signal are directly connected together at a common node of the producing means. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95)
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96. An electrical circuit for a communications channel, comprising:
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means for receiving at a first input a composite signal that includes a transmission signal component and a receive signal component; means for receiving at a second input a replica transmission signal; means for receiving at a third input an analog baseline correction current; means for controlling the magnitude of the analog baseline correction current to thereby control the magnitude of the composite signal; and means for providing at an output a receive signal which comprises the composite signal minus the replica signal, wherein the composite signal, the replica transmission signal, and the analog baseline correction current are directly connected together at a common node. - View Dependent Claims (97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108)
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Specification