Analogue filter systems

Details Analogue filter systems Analogue filter systems

1976-12-07

1978-06-20

Ruggiero, Joseph F.

Boots, shoes, and leggings

325 65, 328167, 333 18, 364825, G06J 100, G06G 7625, H04B 1500

Patent

active

040965767

ABSTRACT:
The analogue filter system is constituted by first and second analogue filters having similar characteristics, a delay device connected between the first and second analogue filters and controlled by a timing circuit for storing the output of the first analogue filter and for producing an output with its time axis inverted, and a device for restoring the time axis of the output from the delay device.

REFERENCES:
patent: 3515990 (1970-06-01), Robertson
patent: 3629509 (1971-12-01), Glaser
patent: 3639848 (1972-02-01), Elliott
patent: 3912916 (1975-10-01), Grun et al.
patent: 3999129 (1976-12-01), Kasson

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