Digital signal receiver device comprising filtering means

Details Digital signal receiver device comprising filtering means Digital signal receiver device comprising filtering means

1993-05-06

1997-09-02

Bocure, Tesfaldet

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

375350, 333202, 327 34, H04L 2506, H04L 2510

Patent

active

056639872

ABSTRACT:
The signals transmitted on communication lines in a disturbed environment can be affected by strays. A digital filtering device eliminates these strays by suitable detection of the logic states of the digital signals. The signals received are sampled at a frequency greater than the digital information transmission rate, then detection of a state is effective when a minimum number of samples from among a predetermined number of successive samples is reached. The filtering device restores the rising and descending fronts, and also the high and low states without impairing the information. Application to a highly disturbed electromagnetic environment, notably communication links with circuit breakers.

REFERENCES:
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patent: 3938081 (1976-02-01), Kirk
patent: 4317111 (1982-02-01), Masoero
patent: 4358846 (1982-11-01), Morgan
patent: 4456992 (1984-06-01), Schaub
patent: 5001374 (1991-03-01), Chang
patent: 5394473 (1995-02-01), Davidson

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