Telephonic communications – Subscriber line or transmission line interface
Patent
1995-06-23
1997-04-01
Matar, Ahmad F.
Telephonic communications
Subscriber line or transmission line interface
379386, 379414, 364833, 341118, 341135, 327307, 327336, 327341, H04M 174, H04M 900, H03M 106, H03M 100
Patent
active
056174730
ABSTRACT:
A sign bit integrator and method for generating a signal to correct an offset in a signal processing system that can distort the output from the system. A charge pulse is generated when the sign of a input signal is sampled in order to provide an offset correction signal with a polarity opposite that of offsets in the system. The charge pulse is provided to a pair of transistors whose size ratio sets the magnitude of the charge pulse. The polarity of the charge pulse is set responsive to a sign bit in the input signal. An integrator capacitor provides the offset correction signal to the signal processing system. A third transistor may be switchably substituted for one of the pair of transistors to change the ratio of sizes and thus change the magnitude of the charge pulse to thereby change the speed with which the offset correction is made. The sign bit integrator and method may be used to correct distortion in a voice signal in a telephone system.
REFERENCES:
patent: 3953805 (1976-04-01), Couvillon
patent: 4282515 (1981-08-01), Patterson, III
patent: 4308504 (1981-12-01), Ida
patent: 4377759 (1983-03-01), Ohhata et al.
patent: 4383188 (1983-05-01), Crosby
patent: 4524425 (1985-06-01), Bertails
patent: 4590458 (1986-05-01), Evans et al.
patent: 4623854 (1986-11-01), Kuraishi
patent: 4805192 (1989-02-01), Confalonieri et al.
patent: 4875045 (1989-10-01), Lynch et al.
patent: 4972189 (1990-11-01), Polito et al.
patent: 4996529 (1991-02-01), Connell
patent: 5210709 (1993-05-01), Tani et al.
patent: 5276446 (1994-01-01), Sellars
patent: 5296857 (1994-03-01), Carbolante
patent: 5523756 (1996-06-01), Mariuz et al.
Olmstead John A.
Wietecha Stanley F.
Harris Corporation
Kumar T. Devendra
Matar Ahmad F.
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