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Non-binary analog-to-digital converters based on neural networks

Research Project

Project/Area Number 15K06030
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Electron device/Electronic equipment
Research InstitutionSophia University

Principal Investigator

Waho Takao  上智大学, 理工学研究科, 教授 (90317511)

Research Collaborator ISHIDA Uichi  
OHARA Kazuma  
SHIMAMOTO Issei  
YAMAZAKI Yusuke  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsアナログ/デジタル変換 / ニューラルネットワーク / 非2進 / ΔΣ変調 / オーバーサンプリング / 冗長性 / 局所解 / ΔΣ変調器 / 低消費電力増幅器 / ホップフィールド / 低消費電力 / A/D変換器 / Hopfield / ノイズシェイピング / ダイナミック回路 / CMOS回路
Outline of Final Research Achievements

By adopting ΔΣ modulators as neurons in the digital output layer of the neural network (NN), conversion errors due to local minima inherent to NN-based analog-to-digital converters can be reduced, and circuit configurations capable of high-resolution operation have been revealed. Our signal-level simulation showed a possible conversion resolution as high as 20 bits or more by exploiting the oversampling technique. In addition, the non-binary operation is achieved by properly selecting the weighting factors in the NN. Furthermore, an active/passive mixed-mode dynamic-common-source amplifier is designed and fabricated as a critical component required for product-sum operation in the NN, and the low power consumption was confirmed.

Academic Significance and Societal Importance of the Research Achievements

実世界のアナログ情報をデジタル機器に取り込むためにはA/D変換器が必須であり、従来から、さまざまな要求仕様に対応するために多くの変換方式が検討されてきた。最近では、素子微細化に伴い増加する素子バラツキに起因する変換精度劣化を抑止できる校正手法が注目されている。非2進方式もその一つで、本研究によりニューラルネットワーク(NN)を用いたA/D変換器の構成法を明らかにしたことで、NNの学習機能を利用した自己校正A/D変換器実現の見通しが得られた。また、局所解の影響回避に関する本提案は、A/D変換器のみならず、広くNN応用分野にも適用可能な技術と考えられる。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (30 results)

All 2019 2018 2017 2016 2015 Other

All Journal Article (10 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 7 results,  Invited: 3 results) Book (3 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] A noise-shaping analog-to-digital converter using a ΔΣ modulator feedforward network2018

    • Author(s)
      Takao Waho
    • Journal Title

      Journal of Applied Logics

      Volume: 5 Pages: 1833-1848

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An Analog-to-Digital Converter Using Delta-Sigma Modulator Network2018

    • Author(s)
      Waho Takao
    • Journal Title

      2018 IEEE 48th International Symposium on Multiple-Valued Logic (ISMVL)

      Volume: 1 Pages: 25-30

    • DOI

      10.1109/ismvl.2018.00013

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ニューラルネットワークにヒントを得たΔΣ変調器の構成法2018

    • Author(s)
      和保孝夫
    • Journal Title

      多値論理とその応用研究会技術研究報告

      Volume: MVL-18 Pages: 22-28

    • Related Report
      2017 Research-status Report
  • [Journal Article] Analog-to-Digital Converters Using Not Multi-level But Multi-bit Feedback Paths2017

    • Author(s)
      Takao Waho
    • Journal Title

      Proc. IEEE International Symposium on Multiple-Valued Logic

      Volume: 1 Pages: 7-12

    • DOI

      10.1109/ismvl.2017.30

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] ニューラルネットワークにヒントを得た多ビットΔΣ変調器2017

    • Author(s)
      和保孝夫
    • Journal Title

      多値論理とその応用研究会技術研究報告

      Volume: MVL-17 Pages: 83-87

    • Related Report
      2016 Research-status Report
  • [Journal Article] ダイナミック共通ソース積分器:アナログ回路低消費電力化の一手法2016

    • Author(s)
      小原一馬 和保孝夫
    • Journal Title

      多値論理研究ノート

      Volume: 39

    • Related Report
      2016 Research-status Report
  • [Journal Article] 粘菌コンピューティングを模したニューラルネットワーク型A/D変換器2016

    • Author(s)
      石田宇一、和保孝夫
    • Journal Title

      電子情報通信学会技術研究報告

      Volume: ED-115

    • Related Report
      2015 Research-status Report
  • [Journal Article] ニューラルネットを用いたA/D変換器2016

    • Author(s)
      和保 孝夫、石田 宇一
    • Journal Title

      多値論理とその応用研究会技術研究報告

      Volume: MVL-16 Pages: 62-66

    • Related Report
      2015 Research-status Report
  • [Journal Article] Non-Binary Analog-to-Digital Converter Based on Amoeba-Inspired Neural Network2015

    • Author(s)
      U. Ishida, Y. Yamazaki and T. Waho
    • Journal Title

      Proc. 2015 IEEE International Symposium on Multiple-Valued Logic

      Pages: 103-108

    • DOI

      10.1109/ismvl.2015.13

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analog Circuits for Low-Power Data Converters2015

    • Author(s)
      T. Waho, K. Ohara
    • Journal Title

      Proc. 24th International Workshop on Post-Binary ULSI Systems

      Pages: 2-5

    • Related Report
      2015 Research-status Report
  • [Presentation] An Analog-to-Digital Converter Based on an Artificial Neural Network2019

    • Author(s)
      Takao Waho
    • Organizer
      2019 International Conference on Soft Computing & Machine Learning (SCML2019)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] An analog-to-digital converter using delta-sigma modulator network2018

    • Author(s)
      Takao Waho
    • Organizer
      48th IEEE International Symposium on Multiple-Valued Logic
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] パネルディスカッション:今後10年の多値論理の展望について2017

    • Author(s)
      和保孝夫
    • Organizer
      第30回多値論理とその応用研究会
    • Place of Presentation
      石川県文教会館、金沢市、石川県
    • Year and Date
      2017-01-07
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Optical characteristics of InP/GalnAs core-multishell NWs grown by self-catalytic VLS mode2016

    • Author(s)
      K. Takano and T. Ogino and K. Asakura and T. Waho and K. Shimomura
    • Organizer
      2016 21st OptoElectronics and Communications Conference (OECC) held jointly with 2016 International Conference on Photonics in Switching (PS)
    • Place of Presentation
      新潟コンベンションセンター、新潟市、新潟県
    • Year and Date
      2016-07-03
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electrical characteristic of n-InP/ i-GaInAs/ p-InP core-multishell NWs grown by self-catalytic VLS mode2016

    • Author(s)
      K. Asakura and T. Ogino and K. Takano and T. Waho and K. Shimomura
    • Organizer
      2016 Compound Semiconductor Week (CSW) [Includes 28th International Conference on Indium Phosphide Related Materials (IPRM) 43rd International Symposium on Compound Semiconductors (ISCS)
    • Place of Presentation
      富山国際会議場、富山市、富山県
    • Year and Date
      2016-06-26
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analog‐to‐Digital Converters Using Artificial Neural Network: A Review2016

    • Author(s)
      Takao Waho
    • Organizer
      International Workshop on Post-Binary ULSI Systems
    • Place of Presentation
      北海道大学、札幌市、北海道
    • Year and Date
      2016-05-17
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 自己触媒 VLS 法による InP/GaInAs/InP コアマルチシェルナノワイヤの光学特性評価2016

    • Author(s)
      高野 紘平、荻野 雄大、朝倉 啓太、和保 孝夫、下村 和彦
    • Organizer
      応用物理学会春季学術講演会
    • Place of Presentation
      東京工業大学大岡山キャンパス(東京都・目黒区)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
  • [Presentation] 自己触媒 VLS 法による n-InP/ i-GaInAs/ p-InP コアシェルナノワイヤの電気特性評価2016

    • Author(s)
      朝倉 啓太、荻野 雄大、高野 紘平、和保 孝夫、下村 和彦
    • Organizer
      応用物理学会春季学術講演会
    • Place of Presentation
      東京工業大学大岡山キャンパス(東京都・目黒区)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
  • [Presentation] 能動/受動併用ダイナミック積分器を用いた低消費電力ΔΣ変調器2016

    • Author(s)
      小原一馬、和保孝夫
    • Organizer
      電子情報通信学会総合大会
    • Place of Presentation
      九州大学伊都キャンパス(福岡県・福岡市)
    • Year and Date
      2016-03-15
    • Related Report
      2015 Research-status Report
  • [Presentation] InAsナノワイヤ/CMOS集積回路のLOCへの応用2016

    • Author(s)
      島本一成、多田共史、荻野雄大、朝倉啓太、下村和彦、和保孝夫
    • Organizer
      電子情報通信学会総合大会
    • Place of Presentation
      九州大学伊都キャンパス(福岡県・福岡市)
    • Year and Date
      2016-03-15
    • Related Report
      2015 Research-status Report
  • [Presentation] シリアルDACを用いた逐次比較型A/D変換器の設計2016

    • Author(s)
      山崎雄介、小原一馬、和保孝夫
    • Organizer
      電子情報通信学会総合大会
    • Place of Presentation
      九州大学伊都キャンパス(福岡県・福岡市)
    • Year and Date
      2016-03-15
    • Related Report
      2015 Research-status Report
  • [Presentation] InAs-Nanowire/CMOS Co-Integration for Sensor Applications2015

    • Author(s)
      Takao Waho
    • Organizer
      BIT's 5th Nano Science and Technology 2015
    • Place of Presentation
      Xi'an (China)
    • Year and Date
      2015-09-24
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 自己触媒VLS法によるInP/GaInAs/InPコアシェルナノワイヤの光学特性評価2015

    • Author(s)
      荻野 雄大、朝倉 啓太、高野 紘平、和保 孝夫、下村 和彦
    • Organizer
      応用物理学会秋季学術講演会
    • Place of Presentation
      名古屋国際会議場(愛知県・名古屋市)
    • Year and Date
      2015-09-13
    • Related Report
      2015 Research-status Report
  • [Presentation] 自己触媒VLS法によるInP/GaInAs/InPコアシェルナノワイヤのTMI供給量依存性2015

    • Author(s)
      朝倉 啓太、荻野 雄大、高野 紘平、和保 孝夫、下村 和彦
    • Organizer
      応用物理学会秋季学術講演会
    • Place of Presentation
      名古屋国際会議場(愛知県・名古屋市)
    • Year and Date
      2015-09-13
    • Related Report
      2015 Research-status Report
  • [Presentation] InAs Nanowire Resistance Measurement Using Nanowire/CMOS Co-Integrated Circuit2015

    • Author(s)
      Issei Shimamoto, Kazuma Ohara, Takehiro Ogino, Kazuhiko Shimomura, and Takao Waho
    • Organizer
      11th Topical Workshop on Heterostructure Microelectronics
    • Place of Presentation
      ひだホテルプラザ(岐阜県・高山市)
    • Year and Date
      2015-08-23
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Book] アナログ/デジタル変換入門 - 原理と回路実装 -2019

    • Author(s)
      和保孝夫
    • Total Pages
      275
    • Publisher
      コロナ社
    • ISBN
      9784003101018
    • Related Report
      2018 Annual Research Report
  • [Book] Introduction to Analog-to-Digital Converters2019

    • Author(s)
      Takao Waho
    • Total Pages
      227
    • Publisher
      River Publishers
    • ISBN
      9788770221023
    • Related Report
      2018 Annual Research Report
  • [Book] はじめて学ぶ情報通信2016

    • Author(s)
      和保孝夫、小川将克、高橋浩、萬代雅希、渋谷智治、林等、炭親良
    • Total Pages
      188
    • Publisher
      コロナ社
    • Related Report
      2016 Research-status Report
  • [Remarks]

    • URL

      http://rscdb.cc.sophia.ac.jp/Profiles/58/0005710/profile.html

    • Related Report
      2018 Annual Research Report
  • [Patent(Industrial Property Rights)] ΔΣ変調器2016

    • Inventor(s)
      和保孝夫
    • Industrial Property Rights Holder
      上智学院
    • Industrial Property Rights Type
      特許
    • Filing Date
      2016-05-09
    • Related Report
      2016 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2020-03-30  

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