Two-term vector multiplier

Details Two-term vector multiplier Two-term vector multiplier

1979-01-26

1980-07-29

Malzahn, David H.

Boots, shoes, and leggings

G06F 738

Patent

active

042154170

ABSTRACT:
A two-term vector multiplier for calculating Ax+BY and useful in FFT and digital filter circuits is disclosed. The variables A and B are converted into standard type-minimal representation codes which are then operated upon to generate selection signals and an addition-subtraction control signal. The selection signals select one of four values, X, Y, Y/2 and O, to be sent to an accumulator where the selected value is either added to or subtracted from one half the value presently in the accumulator to provide a new accumulator value. The final accumulation value is Z=AX+BY.

REFERENCES:
patent: 4020334 (1977-04-01), Powell et al.
patent: 4150434 (1979-04-01), Shibayama et al.
patent: 4156922 (1979-05-01), majerski et al.

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