Circuit device for eliminating noise from an input signal indepe

Details Circuit device for eliminating noise from an input signal indepe Circuit device for eliminating noise from an input signal indepe

1990-04-20

1991-10-22

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307480, 3075421, 328165, H03K 522

Patent

active

050598341

ABSTRACT:
A noise eliminating circuit for identifying and eliminating a noise component from an input signal and obtaining a normal signal as its output signal comprises first and second detectors and an output determining section. The first detector continuously monitors the logic level of the input signal by at least one first detecting element for detecting that the inut signal is at a first logic level and detects that the input signal has the first logic level within a predetermined operating cycle, every the operating cycle. The second detector continuously monitors the logic level of the input signal by at least one second detecting element for detecting that the input signal is at a second logic level and detects that the input signal has the second logic level value within the predetermined operating cycle, every the operating cycle. The output determining section determines its output signal such that the output signal is made at the first logic level in a first case where only the first detector continues its detection over a predetermined time period, the output signal is made at the second logic level in a second case where only the second detector continues its detection over the predetermined time period, and the output signal is held at the logic level that it had previously in other cases than the first and second cases.

REFERENCES:
patent: 4282488 (1981-08-01), Norman et al.
patent: 4727314 (1988-02-01), Lapeyrolerie et al.
patent: 4760279 (1988-07-01), Saito et al.
patent: 4775840 (1988-10-01), Ohmori et al.
patent: 4926072 (1990-05-01), Hyodo
patent: 4939396 (1990-07-01), Schoettmer

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