Enhanced high voltage interface for partitioned subscriber...

Details Enhanced high voltage interface for partitioned subscriber... Enhanced high voltage interface for partitioned subscriber...

2007-04-17

2007-04-17

Kuntz, Curtis (Department: 2614)

Telephonic communications

Subscriber line or transmission line interface

Power supply

Reexamination Certificate

active

10179777

ABSTRACT:
A subscriber line interface circuit contains a high voltage analog section, and a low voltage and digital signal processing section, that monitors and controls the high voltage analog section. The high voltage analog section includes a dual mode tip/ring amplifier unit coupled to a subscriber loop pair, and an input signal receiving unit, that conditions input voice and low voltage signaling and ringing signals from the mixed signal section. Attributes of and/or enhancements to the high voltage section are used to improve the operational performance of the subscriber line interface circuit, in particular, low noise, low power, wide-bandwidth and wide dynamic range characteristics.

REFERENCES:
patent: 4315106 (1982-02-01), Chea, Jr.
patent: 5323451 (1994-06-01), Rosenbaum et al.
patent: 5428682 (1995-06-01), Apfel
patent: 5528688 (1996-06-01), Schorr
patent: 5737411 (1998-04-01), Apfel et al.
patent: 6453040 (2002-09-01), Burke et al.
patent: 6735302 (2004-05-01), Caine et al.

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