Arithmetic devices for neural network
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United States of America
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Mar 11, 2025
Grant Date -
May 6, 2021
app pub date -
Jan 11, 2021
filing date -
Jan 11, 2021
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Abstract
An arithmetic device includes a multiplying-accumulating (MAC) operator and an activation function (AF) circuit. The MAC operator performs a MAC arithmetic operation for weight data and vector data to generate an arithmetic result signal. The AF circuit stores a look-up table for an activation function, adjusts a number of logic level combinations of an input distribution signal that correspond to each logic level combination of the output distribution signal, among a plurality of logic level combinations of the output distribution signal, based on an input range of the activation function. The AF circuit selects and outputs the output distribution signal that corresponds to the input distribution signal based on the look-up table. The input range of the activation function is based on a relative number of errors that occur.
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