Circuit arrangement for digitally processing a given number of c

Details Circuit arrangement for digitally processing a given number of c Circuit arrangement for digitally processing a given number of c

1974-11-29

1976-07-27

Ruggiero, Joseph F.

Registers

Transfer mechanism

Traveling pawl

179 15FS, 325 42, G06F 738

Patent

active

039719227

ABSTRACT:
An arrangement for digitally processing a given number of analog channel signals, more particularly a digital multiplexer and demultiplexer provided with a number of signal paths each comprising a recursive digital filter and delay circuits arranged in cascade therewith, said filter circuits having an amplitude-frequency characteristic of a lowpass filter having a cut-off frequency which is equal to half the bandwidth of a channel signal and a phase-frequency characteristic which is such that the difference between such a phase-frequency characteristic and the phase-frequency characteristic of a reference digital filter has a sawtooth-shaped variation, the slope of the sawtooth being opposite to the slope of the cooperating delay circuit. The arrangement furthermore comprises in cascade a discrete Fourier transformer connected to the signal paths.

REFERENCES:
patent: 3349182 (1967-10-01), Ito et al.
patent: 3619586 (1971-11-01), Hoff, Jr. et al.
patent: 3665171 (1972-05-01), Morrow
patent: 3676598 (1972-07-01), Kurth
patent: 3872381 (1975-03-01), Yamamoto et al.

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