Table lookup multiplier with digital filter

Details Table lookup multiplier with digital filter Table lookup multiplier with digital filter

1991-10-08

1992-05-26

Mai, Tan V.

Boots, shoes, and leggings

36472416, G06F 752, G06F 1531

Patent

active

051173859

ABSTRACT:
In a digital multiplier for multiplying two multi-bit binary operands to produce a binary result by means of a lookup table containing all possible products of said operands, reduction of the total amount of memory required to store the table is obtained by segmenting one operand into a plurality of non-overlapping bit groups and constructing lookup tables for the bit groups, in which each lookup table contains products of its associated bit group and the other, non-partitioned operand. Multiplication is accomplished by generating partial products from the lookup tables, shifting the partial products to account for the relative significance of their associated bit groups, and adding the partial products to provide the resultant product.

REFERENCES:
patent: 4484299 (1984-11-01), Lambourn et al.
patent: 4566075 (1986-01-01), Guttag
patent: 4573136 (1986-02-01), Rossiter
patent: 4679164 (1987-07-01), Rearick
patent: 4709343 (1987-11-01), Van Cang
patent: 4794555 (1988-12-01), Kojima et al.

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