Programmable multistage digital filter

Details Programmable multistage digital filter Programmable multistage digital filter

1987-04-03

1989-02-28

Malzahn, David H.

Boots, shoes, and leggings

G06F 1531

Patent

active

048092088

ABSTRACT:
A multistage digital filter for producing an output data sequence in response to elements of an input data sequence includes a multiplier for multiplying elements of the input data sequence by selected coefficients to produce product terms. An accumulator sums product terms to produce elements of a first filter stage output sequence and elements of the first filter stage output sequence are sequentially fed back to the multiplier. The multiplier and accumulator produce accumulated sums in response to the first stage output sequence to provide a second filter stage output sequence. In a similar fashion, each filter stage output sequence is fed back to the multiplier as the input sequence to the next filter stage until the output sequence of the last filter stage is produced.

REFERENCES:
patent: 3703632 (1972-11-01), Shanks
patent: 3872290 (1975-03-01), Crooke et al.
patent: 3930147 (1975-12-01), Bellanger et al.
patent: 4125900 (1978-11-01), Betts
patent: 4146931 (1979-03-01), Delforge
patent: 4561065 (1985-12-01), Matsuda
patent: 4701873 (1987-10-01), Schenk

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