Adaptive digital filter

Details Adaptive digital filter Adaptive digital filter

1985-10-21

1988-06-28

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 738

Patent

active

047544198

ABSTRACT:
In an adaptive digital filter having a digital filter for simulating a transmission system having indeterminate transmission characteristics through a series circuit of a plurality of series-connected delay circuits, and a correction circuit for correcting the output signal from the digital filter in accordance with changes in transmission characteristics of the transmission system, an input signal to and an output signal from the series circuit of the delay circuits are squared. The difference between the square signals is divided by the number of the delay circuits to obtain a mean value. When the mean value exceeds a predetermined value, the operation of the correction circuit is inhibited.

REFERENCES:
patent: 3868603 (1975-02-01), Guidoux
patent: 4196405 (1980-04-01), Le Dily et al.
patent: 4303895 (1981-12-01), Ohnishi et al.
patent: 4349889 (1982-09-01), Vanden Elzen et al.
patent: 4438521 (1984-03-01), Mattei
patent: 4456893 (1984-06-01), Otani
patent: 4550415 (1985-10-01), Debus, Jr. et al.

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