A multiplication-sum calculation device, an integrated circuit device of the product-sum calculation device, and a cumulative adder suitable for processing the image data

摘要

The multiply-add calculator is provided to cumulatively add a product of each of the first input data and the second input data.;A multiplication-sum calculation device, and a cumulative adder are provided.;In the multiply-add calculator, the barrel shifter shifts the first input data by a predetermined number of bits based on the second input data, and the adder outputs the shifted data output from the barrel shifter and input through the first input terminal And the data inputted through the second input terminal thereof.;The register temporarily stores the data output from the adder, outputs the data stored through the second input terminal of the adder to the adder, and outputs the stored data through the output terminal.;Furthermore, there is provided a multiplexer for selecting one of the third input data input through the first input terminal of the multiplexer and the data input through the second input terminal thereof.;Thus, the multiplication-sum calculation device calculates the product of the first input data and the second input data, calculates the sum of the calculated product and the third calculation data, and outputs the calculated sum from the output terminal.