Browse Prior Art Database

Intelligent Broadband Line Amplifier

IP.com Disclosure Number: IPCOM000038695D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Jan-31
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Lee, J: AUTHOR [+3]

Abstract

This article describes a technique for automatically regulating signal strengths in broadband networks. The technique involves providing remotely adjustable micro-controlled amplifiers at the network nodes. The micro controllers are linked to the network to receive instructions from a central controller and transmit measurement information to the central controller. Because of the parameter variations caused by frequency and temperature changes, as well as gain variations in a broadband cable system, signal compensation is required. This disclosure defines a technique for adjusting and maintaining a line amplifier system by remote control. The system is intended to enable maintenance, adjustment, and readings of amplifier status to be done remotely.

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Intelligent Broadband Line Amplifier

This article describes a technique for automatically regulating signal strengths in broadband networks. The technique involves providing remotely adjustable micro-controlled amplifiers at the network nodes. The micro controllers are linked to the network to receive instructions from a central controller and transmit measurement information to the central controller. Because of the parameter variations caused by frequency and temperature changes, as well as gain variations in a broadband cable system, signal compensation is required. This disclosure defines a technique for adjusting and maintaining a line amplifier system by remote control. The system is intended to enable maintenance, adjustment, and readings of amplifier status to be done remotely. The drawing shows the amplifier system of this disclosure with the intelligent amplifier within the broken lines. The amplifier can be remotely controlled over a cable system. The amplifier is controlled by means of D/A (digital-to-analog) and A/D (analog- to-digital) converters that are driven by a microprocessor. The microprocessor is controller to a cable transceiver which serves to download commands and instructions and upload measurements to a central controller (not shown). The amplifier is interfaced to the central controller. Further, the amplifier can make measurements on its performance and report the changes in the performance of the amplifier to the central controller b...