Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1989-09-08
1991-03-19
Callahan, Timothy P.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307520, 307543, 307234, 328111, 328164, H03K 500, H03B 104
Patent
active
050013742
ABSTRACT:
A digital filter for removing short duration perturbations from a regular train of bilevel pulses on an input line (10) includes a clock (12) for providing a clock signal at a frequency which is an integral multiple of the pulse train frequency. This defines a plurality of subintervals within the interval defined by each of the pulses. The clock signal and the pulse train are applied to a shift register (16, 18) which is coupled to circuitry (24, 28) which examines the level of the signal on the input line (10) during two consecutive subintervals. This circuitry (24, 28) is coupled to output circuitry (32) for providing a clock-synchronized filtered pulse train on an output line (34) which has a data bit length equal to that of the signal on the input line (10) but is delayed by two of the subintervals defined by the clock (12).
REFERENCES:
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patent: 4282488 (1981-08-01), Norman et al.
patent: 4403193 (1983-09-01), Takemura
patent: 4427948 (1984-01-01), Rinaldi
patent: 4525635 (1985-06-01), Gillberg
patent: 4585997 (1986-04-01), Lin
patent: 4775840 (1988-10-01), Ohmori et al.
patent: 4786823 (1988-11-01), Abe et al.
AMP Incorporated
Callahan Timothy P.
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