Digital direct current feed control for a communication system

Details Digital direct current feed control for a communication system Digital direct current feed control for a communication system

1996-08-21

1999-03-02

Zele, Krista

Telephonic communications

Subscriber line or transmission line interface

Network interface device

379324, 379398, 379399, 323283, H04M 900

Patent

active

058781331

ABSTRACT:
A communication system includes a SLIC device and a SLAC device. The SLIC device and the SLAC device cooperate to control the power level provided to a subscriber line. The SLAC device includes a digital control circuit which receives a parameter signal indicative of a first parameter of the electrical power. The digital control circuit provides a digital control signal to the SLIC device in response to a sample digital control signal and the digital parameter signal. Preferably, the digital parameter signal relates to a sensed current signal and the sample digital control signal relates to a desired voltage signal. The digital control circuit can be implemented hardware or software.

REFERENCES:
patent: 5172407 (1992-12-01), Alenius
patent: 5329588 (1994-07-01), Willocx et al.
patent: 5452345 (1995-09-01), Zhou et al.

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