| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inner product calculation device and an inner product calculation method realizing a high-speed computing having cycle time suitable for a highly parallel computing with a computing unit constitution that has a small hardware amount and uses no multiplier, and allowing an inner product calculation to be performed with efficiently and accuracy even using no ROM. <P>SOLUTION: An inner product calculation device comprises: input element registers 2 for storing plural input vector elements; a barrel shifter 3 for calculating the partial product of the term of a power of two of a constant vector element and an input vector element; an adder-subtracter 4 for accumulating the partial products; an accumulator 5 for storing the accumulation result of the adder-subtracter; a shifter 6 for rounding off a result during the accumulation stored in the accumulator 5; and calculation control means for allowing accumulation of the partial products of the terms of the least significant power of two of the constant vector elements and all input vector elements corresponding to the respective terms, sequential repetitive accumulation of the partial products corresponding to the terms of a higher order power of two, and repetition until the terms of the most significant power of two. <P>COPYRIGHT: (C)2012,JPO&INPIT |
