JP6904491B2 - 積和演算器、論理演算デバイス、ニューロモーフィックデバイス及び積和演算方法 - Google Patents
積和演算器、論理演算デバイス、ニューロモーフィックデバイス及び積和演算方法 Download PDFInfo
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Description
図1及び図2を参照しながら、実施形態に係る積和演算器の構成の一例について説明する。
Claims (9)
- 入力値に対応する入力信号に重みを乗算して出力信号を生成し、前記出力信号を出力する複数の積演算部と、
前記入力信号の入力による前記積演算部の寄生容量への充電に起因する第一過渡応答が収束し定常状態になる時間から、前記入力信号の入力による前記積演算部の寄生容量からの放電に起因する第二過渡応答が発生する前までの時間において、前記入力信号から所定の時間遅れで複数の前記積演算部が出力する電流を検出し、以後一定時間間隔で複数の前記積演算部が出力する電流を検出する電流検出処理を実行する電流検出部と、
前記電流検出部が前記一定時間間隔ごとに検出した電流に基づいて前記出力信号の総和に関連する値を演算する和演算部と、
を備える積和演算器。 - 複数の前記積演算部各々は、磁気抵抗効果を示す磁気抵抗効果素子を含む、
請求項1に記載の積和演算器。 - 前記和演算部は、前記電流検出部が前記一定時間間隔ごとに検出した電流の合計である合計電流と係数時間との積を前記出力信号の総和に関連する値として演算する、
請求項1又は請求項2に記載の積和演算器。 - 前記係数時間は、前記入力信号がとり得る最短の長さであり、
前記入力信号は、前記係数時間の整数倍の長さを有し、複数の前記積演算部に同時に入力され、
前記電流検出部は、前記係数時間に等しい周期で前記電流検出処理を実行する、
請求項3に記載の積和演算器。 - 前記電流検出部は、最初に前記電流検出処理が実行されてから前記入力信号がとり得る最長の長さに等しい時間が経過した時点で前記電流検出処理を終了させる、
請求項1から請求項4のいずれか一つに記載の積和演算器。 - 前記電流検出部は、前記電流検出処理により検出された電流が複数の前記積演算部に前記入力信号が入力されていない場合における電流と等しい場合、前記電流検出処理を終了させる、
請求項1から請求項5のいずれか一つに記載の積和演算器。 - 請求項1から請求項6のいずれか一つに記載の積和演算器を備える論理演算デバイス。
- 請求項1から請求項6のいずれか一つに記載の積和演算器を備えるニューロモーフィックデバイス。
- 請求項1から請求項6のいずれか一つに記載の積和演算器による積和演算方法であって、
複数の積演算部を使用することにより、入力値に対応する入力信号に重みを乗算して出力信号を生成し、前記出力信号を出力する積演算工程と、
前記入力信号の入力による前記積演算部の寄生容量への充電に起因する第一過渡応答が収束し定常状態になる時間から、前記入力信号の入力による前記積演算部の寄生容量からの放電に起因する第二過渡応答が発生する前までの時間において、前記入力信号から所定の時間遅れで複数の前記積演算部が出力する電流を検出し、以後一定時間間隔で複数の前記積演算部が出力する電流を検出する電流検出処理を実行する電流検出工程と、
前記電流検出工程において前記一定時間間隔ごとに検出された電流に基づいて前記出力信号の総和に関連する値を演算する和演算工程と、
を含む積和演算方法。
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