Programmable canonic signed digit filter chip

Details Programmable canonic signed digit filter chip Programmable canonic signed digit filter chip

1991-10-28

1993-11-16

Malzahn, David H.

Boots, shoes, and leggings

364760, G06F 752

Patent

active

052629740

ABSTRACT:
A programmable canonic signed digit (CSD) filter is provided which employs programmable CSD multipliers. The filter receives a digital input signal and includes a tapped delay line for providing a delay between the input samples. The filter advantageously employs a plurality of programmable CSD multipliers which receive programmable input filter coefficients and perform multiplication of the coefficient with the delayed input signal. Summation hardware is further included for summing the outputs of the plurality of multipliers to provide the filter output therefrom.

REFERENCES:
patent: 4121295 (1978-10-01), Witt
patent: 4638449 (1987-01-01), Frey
patent: 4843582 (1989-06-01), Heck et al.
patent: 4967388 (1990-10-01), Tate
patent: 5081604 (1992-01-01), Tanaka
patent: 5115408 (1992-05-01), Darley et al.
Ulbrich et al, "MOS-VLSI Pipelined Digital Filters for Video Applications", ICAASP 84 Proceeding Mar. 19-21, 1984 vol. 1 pp. 44.7.1-44.7.4.

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