Telephonic communications – Line equalization or impedance matching
Patent
1995-04-17
1996-06-18
Hofsass, Jeffery
Telephonic communications
Line equalization or impedance matching
379394, 379405, H04M 100
Patent
active
055286836
ABSTRACT:
The invention relates to a method and circuit for implementing an impedance associated with a monolithically integrated telephone subscriber circuit connected to a telephone line having a pair of terminals. The circuit consists of a resistor connected serially to one terminal of the telephone line, and a series of current mirror circuits. The current mirror circuits are connected in a closed loop configuration to the one terminal of the telephone line. The current mirror circuits divide, by a predetermined factor, the value of the resistor when a DC or very low frequency signal is input to the telephone circuit.
REFERENCES:
patent: 4300023 (1981-11-01), Kelley et al.
patent: 4485341 (1984-11-01), Welty et al.
Castello Rinaldo
Tomasini Luciano
Carlson David V.
Hofsass Jeffery
Saint-Surin Jacques M.
Santarelli Bryan A.
SGS--Thomson Microelectronics S.r.l.
LandOfFree
Method and circuit for implementing an impedance, in particular does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and circuit for implementing an impedance, in particular , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and circuit for implementing an impedance, in particular will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-229599