Research field (3):
Computer systems
, Electric/electronic material engineering
, Electronic devices and equipment
Research keywords (7):
Analog Circuits
, Resonant Tunneling
, Bistability
, Device
, Multiple Value
, delta-sigma modulator
, Analog-to-Digital Converters
Research theme for competitive and other funds (11):
2015 - 2019 ニューロ非2進アナログ/デジタル変換器の研究
2012 - 2015 化合物半導体ナノワイヤ/CMOS集積化によるラボオンチップ
2014 - 2015 ダイナミック積分回路を用いた低消費電力ΔΣ変調器とバイオセンサへの応用
2004 - 2013 アナログ/デジタル回路構成法の研究
2009 - 2012 InAsナノワイヤを用いた超高速アナログ/デジタル集積回路
2008 - 2012 次世代情報通信システムのためのナノワイヤ/CMOS異種技術集積化の研究
2007 - 2009 化合物半導体アナログ/デジタル変換回路構成法の研究
2008 - 2008 アナログ/デジタル変換回路の高性能化に関する基礎研究
2002 - 2004 共鳴トンネル素子を用いた超高速バンドパス型ΔΣ変調器
2000 - 2002 共鳴トンネル素子を用いた広帯域アナログ/デジタル変換器
1999 - 2000 Multiple-Valued Logic using Resonant-Tunneling Diodes
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Papers (203):
Takao WAHO, Akihisa KOYAMA, Hitoshi HAYASHI. Delta-Sigma Domain Signal Processing Revisited with Related Topics in Stochastic Computing. IEICE Transactions on Information and Systems. 2024. E107.D. 8. 966-975
Akihisa Koyama, Takao Waho, Hitoshi Hayashi. Signal processing with delta-sigma modulated bitstreams for artificial neurons. 2024 IEEE 54th International Symposium on Multiple-Valued Logic (ISMVL). 2024. 47-52
A. Koyama, T. Waho, H. Hayashi. High-precision signal processing using 2nd-order ΔΣ-modulated bitstreams. 32nd International Workshop on Post-Binary ULSI Systems (ULSIWS). 2023
Takao Waho, Akihisa Koyama, Hitoshi Hayashi. Delta-Sigma Domain Signal Processing: A Review with Relevant Topics in Stochastic Computing. 2023 IEEE 53rd International Symposium on Multiple-Valued Logic (ISMVL). 2023. 88-93
Takao WAHO, Tomoaki KOIZUMI, Hitoshi HAYASHI. A ΔΣ-Modulation Feedforward Network for Non-Binary Analog-to-Digital Converters. IEICE Transactions on Information and Systems. 2021. E104.D. 8. 1130-1137
1997 - 2001 IEEE Computer Society Technical Committee on Multiple-Valued Logic, Members-at-Large
1997 - 1999 日本電子工業振興協会(電子協) 先端情報処理集積システム専門委員会 幹事
Awards (7):
2021/05 - Technical Committee on Multiple-Valued Logic, IEEE Computer Society, IEEE Outstanding Contributed Paper Award A Delta-Sigma-Modulator Feedforward Network for a Non-Binary Analog-to-Digital Converter
2020/11 - MVL Technical Committee, The Computer Society, Institute of Electrical and Electronics Long Term Contribution Award