US 12,001,811 B2
Product-sum operation device, logical calculation device, neuromorphic device, and multiply-accumulate method
Kuniyasu Ito, Tokyo (JP); and Tatsuo Shibata, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Appl. No. 17/281,021
Filed by TDK CORPORATION, Tokyo (JP)
PCT Filed Oct. 11, 2018, PCT No. PCT/JP2018/037962
§ 371(c)(1), (2) Date Mar. 29, 2021,
PCT Pub. No. WO2020/075272, PCT Pub. Date Apr. 16, 2020.
Prior Publication US 2021/0349693 A1, Nov. 11, 2021
Int. Cl. G06F 7/544 (2006.01); G06G 7/16 (2006.01); G06N 3/065 (2023.01)
CPC G06F 7/5443 (2013.01) [G06G 7/16 (2013.01); G06N 3/065 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A multiply-accumulate calculation device comprising:
a plurality of multiple calculation units configured to generate output signals by multiplying an input signal corresponding to an input value and having a rising part, a signal part, and a falling part by a weight, and output the output signals;
an accumulate calculation unit configured to calculate a sum of the output signals output from the plurality of multiple calculation units; and
a correction unit configured to execute correction processing for correcting the sum of the output signals on the basis of a correction value including at least one of a first value incorporated into the sum by a current flowing into variable resistors of the plurality of multiple calculation units due to the rising part of the input signal, and a second value incorporated into the sum by a current flowing into the variable resistors of the plurality of multiple calculation units due to the falling part of the input signal.