Product-sum calculation apparatus, product-sum calculating unit

Details Product-sum calculation apparatus, product-sum calculating unit Product-sum calculation apparatus, product-sum calculating unit

1995-12-28

1998-06-09

Malzahn, David H.

Boots, shoes, and leggings

36473602, 36478603, G06F 748

Patent

active

057645574

ABSTRACT:
A product-sum calculation apparatus is provided for cumulatively adding up respective products of first input data and second input data. There is further provided a product-sum calculation unit integrated circuit apparatus including the product-sum calculation apparatus, and a cumulative adder. In the product-sum calculation apparatus, a barrel shifter shifts the first input data by a predetermined number of bits based on the second input data, and an adder adds the shifted data outputted from the barrel shifter and inputted through a first input terminal thereof, and data inputted through a second input terminal thereof. A register temporarily stores data outputted from the adder, outputs a stored data to the adder through the second input terminal of the adder, and outputs the stored data through an output terminal. Further, there is provided a multiplexer for selecting either one of third input data inputted through a first input terminal thereof, and data inputted through a second input terminal thereof. Accordingly, the product-sum calculation apparatus calculates a product of the first input data and the second input data, calculates a sum of a calculated product and the third input data, and outputs a calculated sum from the output terminal.

REFERENCES:
patent: 4110832 (1978-08-01), Leininger et al.
patent: 4852037 (1989-07-01), Aoki
patent: 5181183 (1993-01-01), Miyazaki
patent: 5287299 (1994-02-01), Lin
patent: 5436860 (1995-07-01), Shankar et al.
patent: 5650952 (1997-07-01), Baier et al.
Ruetz, Peter, IEEE Journal of Solid-State Circuits, vol. 24, No. 2, pp. 338-348, Apr. 1989.

Affiliated with

Also associated with

Rating

Product-sum calculation apparatus, product-sum calculating unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Product-sum calculation apparatus, product-sum calculating unit , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Product-sum calculation apparatus, product-sum calculating unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2209218