Noise cancel circuit capable of cancelling noise from a pulse si

Details Noise cancel circuit capable of cancelling noise from a pulse si Noise cancel circuit capable of cancelling noise from a pulse si

1995-04-27

1996-11-05

Chin, Stephen

Pulse or digital communications

Systems using alternating or pulsating current

Antinoise or distortion

375346, 327165, 327170, H04B 1500

Patent

active

055725490

ABSTRACT:
In a noise cancel circuit for cancelling leading and travelling noises from an input pulse signal comprising a sequence of input pulses each of which is defined by a predetermined input pulse period and a predetermined input pulse width, a leading noise cancel circuit cancels the leading noise from the input pulse signal and produces a leading noise cancelled signal. A trailing noise cancel circuit cancels the trailing noise from the leading noise cancelled signal and produces a trailing noise cancelled signal. Thus, the noise cancel circuit produces an output pulse signal comprising a sequence of output pulses each of which is defined by an output pulse period equal to the predetermined input pulse period and an output pulse width equal to the predetermined input pulse width.

REFERENCES:
patent: 3626303 (1971-12-01), Wilcox
patent: 3947848 (1976-03-01), Carnahan et al.
patent: 3979683 (1976-09-01), Ikeda
patent: 4885639 (1989-12-01), Nakata et al.
patent: 5448309 (1995-09-01), Won

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