Cascade filter structure with time overlapped partial addition o

Details Cascade filter structure with time overlapped partial addition o Cascade filter structure with time overlapped partial addition o

1986-08-29

1988-11-15

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 738

Patent

active

047854111

ABSTRACT:
A filter structure uses multiple discrete filter circuits which are cascaded to provide a multiple tap filter of programmable tap length. In one form, an FIR filter may be implemented wherein each circuit generates partial sum operands which must be added to provide a filter output. The cascaded circuits perform partial addition operations near simultaneously by using a serial addition which is synchronized with a start bit. The number of taps in the filter structure implemented by the cascaded discrete filter circuits is variable and may be programmed with a programmable storage register in each discrete circuit which stores operand data fixing the tap length of each discrete circuit. The multiple filter circuits provide a single filter structure with a large tap length and high sampling rate.

REFERENCES:
patent: 4569062 (1986-02-01), Dellande et al.
patent: 4584659 (1986-04-01), Stikvoort
patent: 4586153 (1986-04-01), Hobrough
patent: 4644488 (1987-02-01), Nathan
patent: 4644547 (1987-02-01), Vercellotti et al.
Nagle, Jr. et al., "An Introduction to Computer Logic", 1975, pp. 450-451.

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