Sony Group Corporation
ARITHMETIC APPARATUS AND MULTIPLY-ACCUMULATE SYSTEM

Abstract:

An arithmetic apparatus includes input lines and one or more multiply-accumulate devices. An electrical signal corresponding to an input value is input into the input lines within a predetermined input period. Multiplication units generate a product value by multiplying the input value by a weight value. An accumulation unit accumulates the charge corresponding to the generated product value. A charging unit charges, after the input period, the accumulation unit in which the charge corresponding to the product value is accumulated. An output unit outputs, after charging by the charging unit starts, a multiply-accumulate signal representing a sum of the product values by performing threshold determination on a voltage retained by the accumulation unit by using a predetermined threshold value. The charging by the charging unit is performed on a common charging mode and a common threshold value is set as the predetermined threshold value.