Adaptive energy detector gain control in physical layer transceiver for home telephone wire network
First Claim
1. A network station for receiving data via residential wiring, comprising:
- an input circuit for receiving an incoming pulse signal, an energy detector responsive to the incoming pulse signal for producing a pulse energy value representing energy of the incoming pulse signal, and an adaptive energy detector gain control circuit responsive to the pulse energy value for adaptively controlling gain of the energy detector so as to maintain the pulse energy value at a predetermined level.
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Accused Products
Abstract
A novel physical layer transceiver is provided for receiving data transmitted via residential wiring. The transceiver includes an input circuit for receiving an incoming pulse signal, and an energy detector responsive to the incoming pulse signal for producing a pulse energy value representing energy of the incoming pulse signal. An adaptive energy detector gain control circuit is responsive to the pulse energy value for adaptively controlling gain of the energy detector so as to maintain the pulse energy value at a predetermined level. The gain of the energy detector is controlled in response to at least one of access identification pulses preceding data pulses to identify the transmitting station. The adaptive energy detector gain control circuit includes a comparator for comparing a pulse energy value produced by the energy detector with a preset threshold level, and a controller for supplying the energy detector with a gain control value. The controller reduces the gain of the energy detector if the pulse energy value exceeds the threshold level, and raises the gain of the energy detector if the pulse energy value is less than the threshold level.
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Citations
20 Claims
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1. A network station for receiving data via residential wiring, comprising:
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an input circuit for receiving an incoming pulse signal, an energy detector responsive to the incoming pulse signal for producing a pulse energy value representing energy of the incoming pulse signal, and an adaptive energy detector gain control circuit responsive to the pulse energy value for adaptively controlling gain of the energy detector so as to maintain the pulse energy value at a predetermined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of receiving data via residential wiring, comprising the steps of:
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producing by an energy detector a pulse energy value representing energy of an incoming pulse signal, and adaptively controlling gain of the energy detector in response to the produced pulse energy value so as to maintain the pulse energy value at a predetermined level. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification