Method of and apparatus for multiplying matrix data

Details Method of and apparatus for multiplying matrix data Method of and apparatus for multiplying matrix data

1998-11-23

1999-12-21

Malzahn, David H.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708410, G06F 1716

Patent

active

060062460

ABSTRACT:
A constant matrix [TS] is resolved into three constant matrices [TSC], [TSB], [TSA]. 1st.about.16th rows of the constant matrix [TSC] are calculated by a first stage of additions/subtractions (adders/subtractors 1.sub.1 .about.1.sub.16) to which elements A1.about.A16 are inputted. 1st.about.16th rows of the constant matrix [TSB] are calculated by a second stage of additions/subtractions (adders/subtractors 2.sub.1 .about.2.sub.16) to which outputs from the first stage of additions/subtractions are inputted in a predetermined pattern as shown. 1st.about.16th rows of the constant matrix [TSA] are calculated by a third stage of additions/subtractions (adders/subtractors 3.sub.1 .about.3.sub.16) to which outputs from the second stage of additions/subtractions are inputted in a predetermined pattern as shown. As a result, 1st.about.16th rows of the constant matrix [TS] are calculated by the first through third stages of additions/subtractions, outputting elements B1.about.B16. The amount of computation required to calculate the matrices is reduced.

REFERENCES:
patent: 4134134 (1979-01-01), Lux
patent: 4621337 (1986-11-01), Cates et al.
patent: 4839844 (1989-06-01), Watari
patent: 5001663 (1991-03-01), Parulski et al.
patent: 5008848 (1991-04-01), Akiwumi-Assani

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