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JOHGUCHI Koh｜Shinshu University Researcher List

JOHGUCHI Koh

Academic Assembly　School of Science and Technology　Institute of Engineering

Faculty of Engineering　Electrical and Computer Engineering　

Associate Professor　

Researcher Information

Degree

  • Master of Engneering, Hiroshima University
  • Bachelor of Engineering, Hiroshima University
  • Doctor of Philosophy (Engineering), Hiroshima University

Field Of Study

  • Electron device and electronic equipment, Semiconductor Memories
  • Computer system, Integraed Circuit Design
  • Computer system, Computer Architecture

Career

  • 2016
    Associate Progessor, Electrical and Computer Engineering Division, Department of Engineering, Graduate School of Science and Technology
  • 2016
    Associate Professor, Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University
  • 2014
    Associate Progessor, Department of Electrical and Electronic Engineering, Interdisciplinary Graduate School of Science and Technology
  • 2014
    Associate Professor, Department of Computer Science and Engineering, Faculty of Engineering, Shinshu University
  • 2014 - 2016
    Associate Professor, Department of Information Engineering, Graduate School of Science and Technology, Shinshu University
  • 2012 - 2014
    Assistant Proffesor, Research Development Initiative, Chuo University
  • 2010 - 2012
    Ph.D Researcher, Department of Electrical Engineering and Information Systems, Graduate School of Engineering, University of Tokyo
  • 2009 - 2010
    Assistant Proffessor, HiSIM Research Center, Hiroshima University
  • 2008 - 2009
    Ph.D Researcher, Research Institute for Nanodevice and Bio Systems, Hiroshima University
  • 2007 - 2008
    Ph.D. Researcher,"Interdisciplinary Research on Integration of Semiconductor and Biotechnology" Project, Hiroshima University
  • 2004 - 2007
    JSPS Research Fellow (DC1)

Educational Background

  • 2004 - 2007, Hiroshima University, Graduate School of Advanced Science of Matter, Department of Semiconductor Electronics&Integration Science
  • 2002 - 2004, Hiroshima University, Graduate School of Advanced Sciences of Matter, Department of Quantum Matter
  • 2002, Hiroshima University, Faculty of Engineering, Cluster 2 (Electrical Engineering)

Member History

  • 2020
    Chair (Area12), International Conference on Solid-State Devices and Materials
  • 2018
    Editor, IEICE Electronics Express (ELEX), IEICE (Institute of Electronics, Information and Communication Engineers)
  • 2018
    Committee Member, Department of VLSI Design Technologies, IEICE (Institute of Electronics, Information and Communication Engineers)
  • 2018
    Committee Member, Tokai-Branch, IPSJ (Information Processing Society of Japan)
  • 2017 - 2019
    Vice-Chair (Special Area), International Conference on Solid-State Devices and Materials
  • 2016 - 2017
    Guest Editor, Special Section on Solid-State Circuit Design - Architecture, Circuit, Device and Design Methodology, IEICE (Institute of Electronics, Information and Communication Engineers)
  • 2015 - 2017
    Program Committee Member (Area 10), International Conference on Solid-State Devices and Materials
Research activity information

Paper

  • Multi-phase time-zooming high-precision ultrasonic water flow meter
    Junpei Oda, Yuta Kaga and Koh Johguchi
    Japanese Journal of Applied Physics (JJAP), 63, 03SP62, 01 Apr. 2024, Refereed
  • A high-precision wearable perspiration monitor with 0.18 µm BCD process and PDMS micro air-flow path
    Ayumu Yamamoto, Yuta Kaga, Tomohiro Aso, Shin-ichiro Kuroki, Hideya Momose and Koh Johguchi
    Japanese Journal of Applied Physics (JJAP), 62(SC), SC1078, 24 Feb. 2023, Refereed
  • A 180 nm CMOS smart ultrasonic water flow meter circuit for IoT smart society
    Yuta Kaga and Koh Johguch
    Japanese Journal of Applied Physics (JJAP), 60, SBBL05, 17 Mar. 2021, Refereed
  • A compact perspiration meter system with capacitive humidity sensor for wearable health-care application
    Yusuke Mitani, Kosuke Miyaji, Reiji Kaneko, Takaharu Uekura, Hideya Momose and Koh Johguchi,
    Japanese Journal of Applied Physics (JJAP), 57, 04FF10, Apr. 2018, Refereed
  • Understanding relation between performance and reliability of NAND flash / SCM hybrid solid-state drive (SSD)
    Shuhei Tanakamaru, Shogo Hosaka, Koh Johguchi, Hirofumi Takishita and Ken Takeuchi
    IEEE Transactions on Very Large Scale Integration Systems, 24(6), 2208-2219, Jun. 2016, Refereed
  • Investigation and improvement of verify-program in carbon nanotube-based nonvolatile memory
    Sheyang Ning, Tomoko Ogura-Iwasaki, Kazuya Shimomura, Koh Johguchi, Eisuke Yanagizawa, Glen Rosendale, Monte Manning, Darlene Viviani, Thomas Rueckes and Ken Takeuchi
    IEEE Transaction on Electron Devices, 62(9), 2837-2844, 20 Jul. 2015, Refereed
  • Experimental investigation of program-voltage (20 V) generation with boost converter for 3D-stacked NAND flash SSD
    Teruyoshi Hatanaka, Koh Johguchi and Ken Takeuchi
    IEEE Transactions on Components, Packaging and Manufacturing Technology, 5(2), 188-193, 19 Jan. 2015, Refereed
  • Cost, capacity and performance analyses for hybrid SCM/NAND flash SSD
    Chao Sun, Tomoko Ogura-Iwasaki, Takahiro Onagi, Koh Johguchi and Ken Takeuchi
    IEEE Transaction on Circuits and Systems I, 61(8), 2360-2369, 24 Jul. 2014, Refereed
  • A temperature tracking read reference current and write voltage generator for multi-level phase change memories
    Koh Johguchi, Toru Egami, Kousuke Miyaji and Ken Takeuchi
    IEICE Transactions on Electronics, E97-C(4), 342-350, 01 Apr. 2014, Refereed
  • NAND phase change memory with block-erase architecture and pass-transistor design requirements for write and disturbance
    Koh Johguchi, Kazuaki Yoshioka and Ken Takeuchi
    IEICE Transactions on Electronics, E97-C(4), 351-359, 01 Apr. 2014, Refereed
  • Hybrid triple-level-cell (TLC) /multi-level-cell (MLC) NAND flash storage array
    Shogo Hachiya, Koh Johguchi, Kousuke Miyaji and Ken Takeuchi
    Japanese Journal of Applied Physics (JJAP), 53(4S), 04EE04, 10 Feb. 2014, Refereed
  • Investigation of multi-level-cell and SET operations on super-lattice phase change memories
    Toru Egami, Koh Johguchi, Senju Yamazaki and Ken Takeuchi
    Japanese Journal of Applied Physics (JJAP), 53(4S), 04ED02, 10 Feb. 2014, Refereed
  • A high performance and energy-efficient cold data eviction algorithm for 3D-TSV hybrid ReRAM/MLC NAND SSD
    Chao Sun, Kousuke Miyaji, Koh Johguchi and Ken Takeuchi
    IEEE Transactions on Circuits and Systems I, 61(2), 382-392, 24 Jan. 2014, Refereed
  • ×10 fast write, 80% energy saving temperature controlling set method for multi-level cell phase change memories to solve the scaling blockade
    Koh Johguchi, Toshimichi Shintani, Takahiro Morikawa, Kazuaki Yoshioka and Ken Takeuchi
    Elsevier Solid-State Electronics, 81, 78-85, 28 Feb. 2013, Refereed
  • Through-silicon-via (TSV) design with clustering structure and adaptive TSV control for 3D solid-state-drive boost converter system
    Koh Johguchi, Teruyoshi Hatanaka and Ken Takeuchi
    Japanese Journal of Applied Physics (JJAP), 51(2S), 02BE02, 20 Feb. 2012, Refereed
  • Endurance enhancement and high speed set/reset of 50nm generation HfO2–based resistive random access memory (ReRAM) cell by intelligent set/reset pulse shape optimization and verify scheme
    Kazuhide Higuchi, Kousuke Miyaji, Koh Johguchi and Ken Takeuchi
    Japanese Journal of Applied Physics (JJAP), 51(2S), 02BD07, 20 Feb. 2012, Refereed
  • Through-silicon-via (TSV) design for a 3D-solid-state-drive (SSD) system with boost converter in a package
    Koh Johguchi, Teruyoshi Hatanaka, Koichi Ishida, T. Yasufuku, Makoto Takamiya, Takayasu Sakurai and Ken Takeuchi
    IEEE Transactions on Components, Packaging and Manufacturing Technology, 1(2), 269-277, 24 Mar. 2011, Refereed
  • Prediction of circuit-performance variations from technology variations for reliable 100 nm SOC circuit design
    Norio Sadachika, Shu Mimura, Akihiro Yumisaki, Koh Johguchi, Akihiro Kaya, Mitiko Miura-Mattausch and Hans Jürgen Mattausch
    IEICE Transactions on Electronics, E94-C(3), 361-367, 01 Mar. 2011, Refereed
  • HiSIM-HV: A compact model for simulation of high-voltageMOSFET circuits
    Yasunori Oritsuki, Masahiro Yokomichi, Takahiro Kajiwara, Akihiro Tanaka, Norio Sadachika, Masataka Miyake, Hideyuki Kikuchihara, Koh Johguchi, Uwe Feldmann, Hans Jürgen Mattausch and Mitiko Miura-Mattausch
    IEEE Transaction on Electron Devices, 57(10), 2671-2677, 09 Sep. 2010, Refereed
  • Actuation of magnetic beads on a complementary metal–oxide–semiconductor chip for biological applications
    Tomohiro Ishikawa, Fumie Kaneko and Koh Johguchi
    Japanese Journal of Applied Physics (JJAP), 49, 04DL08, 20 Apr. 2010, Refereed
  • Measurement-based ring oscillator variation analysis
    Koh Johguchi, Akihiro Kaya, Shinya Izumi, Hans Jürgen Mattausch and Tetsushi Koide
    IEEE Design&Test of Computers, 4(2), 21-25, 29 Mar. 2010, Refereed
  • Correlating microscopic and macroscopic variation with surface-potential compact model
    Hans Jürgen Mattausch, Norio Sadachika, Akihiro Yumisaki, Akihiro Kaya, Wataru Imafuku, Koh Johguchi, Tetsushi Koide and Mitiko Miura-Mattausch
    IEEE Electron Device Letters, 30(8), 873-875, 17 Jul. 2009, Refereed
  • Variation analysis of CMOS technologies using surface-potential MOSFET model
    Hans Jürgen Mattausch, Akihiro Yumisaki, Norio Sadachika, Akihiro Kaya, Koh Johguchi, Tetsushi Koide, Mitiko Miura-Mattausch
    Journal of Telecommunications and Information Technology, 4/2009, 37-44, 01 Apr. 2009, Refereed
  • 4-port unified data/instruction cache design with distributed crossbar and interleaved cache-line words
    Koh Johguchi, Hans Jürgen Mattausch, Tetsushi Koide and Tetsuo Hironaka
    IEICE Transactions on Electronics, E90-C(11), 2157-2160, 01 Nov. 2007, Refereed
  • A 2-stage-pipelined 16 port SRAM with 590 Gbps random access bandwidth and large noise margin
    Koh Johguchi, Yuya Mukuda, Ken-ichi Aoyama, Hans Jürgen Mattausch and Tetsushi Koide
    IEICE Electronics Express (ELEX), 4(2), 21-25, 25 Jan. 2007, Refereed
  • Distributed-crossbar architecture for area-efficient combined data/instruction caches with multiple ports
    Koh Johguchi, Zhaomin Zhu, Tai Hirakawa, Testushi Koide, Tetsuo Hironaka, Hans Jürgen Mattausch
    IEE Electronics Letters, 40(3), 160-162, 05 Feb. 2004, Refereed

Lectures, oral presentations, etc.

  • 多相タイムズーミング手法を用いた超音波式流量計の開発
    尾田準平、加賀悠太、上口光
    2024年第71回応用物理学会春季学術講演会, 22 Mar. 2024
  • ウェアラブル発汗量計測システムの高精度化への検討と実測
    峯尾俊作、山本歩、黒木伸一郎、百瀬英哉、上口光
    2024年第71回応用物理学会春季学術講演会, 22 Mar. 2024
  • 0.18 µm BCDプロセスを用いたウェアラブル発汗量計測システムの作成とその高精度化への検討
    峯尾俊作、山本歩、黒木伸一郎、百瀬英哉、上口光
    デザインガイア2023, 16 Nov. 2023
  • A high-resolution ultrasonic water flow meter with multi-phase time-zooming technique and active band pass filter
    Junpei Oda, Yuta Kaga and Koh Johguchi
    Extended Abstracts of 2023 Internal Conference on Solid State Devices and Materials (SSDM2023), 07 Sep. 2023
  • Temperature Sensor Circuit for a Wearable Perspiration Monitoring System
    Yuichiro Ichimura, Kenta Goto and Koh Johguchi
    Proceedings of 2023 International Symposium on Devices, Circuits and Systems, 31 May 2023
  • Smart sensing circuit design in IoT Era
    Koh Johguchi
    Proceedings of 2023 International Symposium on Devices, Circuits and Systems, 30 May 2023
  • Photodiode and analog-front-end circuit design for wearable vital sensing system with fiber-bragg-grating sensor
    Kaede Kano and Koh Johguchi
    Proceedings of 2023 International Symposium on Devices, Circuits and Systems, 29 May 2023
  • 0.18 µm BCDプロセスを用いたウェアラブル発汗量計の開発と実測
    峯尾俊作、山本歩、黒木伸一郎、百瀬英哉、黒木伸一郎、上口光
    LSIとシステムのワークショップ2023, 09 May 2023
  • 多相クロックを用いたスマート超音波流量計の回路設計と測定精度の向上の検証
    尾田準平、加賀悠太、上口光
    LSIとシステムのワークショップ2023, 09 May 2023
  • 0.18 µm BCDプロセスを用いたウェアラブル発汗量計の開発
    山本歩、加賀悠太、麻生知宏、黒木伸一郎、百瀬英哉、上口光
    2023年第70回応用物理学会春季学術講演会, 18 Mar. 2023
  • ウェアラブルFBG生体信号計測システムのためのフォトダイオードとアナログフロントエンド回路試作チップの評価
    狩野楓、上口光
    2023年第70回応用物理学会春季学術講演会, 15 Mar. 2023
  • ウェアラブル生体信号計測システムのためのフォトダイオードとアナログフロントエンド回路の試作と評価
    狩野楓、上口光
    IEEE Circuits and Systems Society Japan Joint Chapter Young CAS Researchers Workshop, 28 Nov. 2022
  • A high-precision wearable perspiration monitor with 0.18 µm BCD process and PDMS micro air-flow path
    Ayumu Yamamoto, Yuta Kaga, Tomohiro Aso, Shin-ichiro Kuroki, Hideya Momose and Koh Johguchi
    Extended Abstracts of 2022 Internal Conference on Solid State Devices and Materials (SSDM2022), 27 Sep. 2022
  • CMOS回路設計を用いたスマート超音波流量計の実現
    加賀悠太、上口光
    LSIとシステムのワークショップ2021, 11 May 2021
  • CMOS技術を用いた超音波式流量計測システム
    加賀悠太、上口光
    2021年第68回応用物理学会春季学術講演会, 17 Mar. 2021
  • 小型ウェアラブル発汗量計測システムに向けた周辺回路開発
    坂田天来、狩野楓、百瀬英哉、上口光
    2021年第68回応用物理学会春季学術講演会, 17 Mar. 2021
  • 歩行補助ロボット用制御ユニットの専用拡張ボードによる小型化
    石倉佳汰、上口光
    2021年第68回応用物理学会春季学術講演会, 17 Mar. 2021
  • ウェアラブル発汗計の小型化に向けた周辺回路開発
    坂田天来、狩野楓、百瀬英哉、上口光
    2021年電子情報通信学会総合大会, 12 Mar. 2021
  • ウェアラブル歩行補助ロボット用スマートアクチュエータ制御ユニット
    石倉佳汰、上口光
    2021年電子情報通信学会総合大会, 12 Mar. 2021
  • A smart ultra-sonic water-flow meter with 180-nm CMOS technology
    Yuta Kaga and Koh Johguchi
    Extended Abstracts of 2020 Internal Conference on Solid State Devices and Materials (SSDM2020), 30 Sep. 2020
  • A smart hybrid solid-state-drive storage system based on nonvolatile storage-class-memories – device, circuit design and architecture-
    Koh Johguchi
    Proceedings of 3rd International Symposium on Devices, Circuits and Systems, 04 Mar. 2020, Invited
  • Data management methods for hierarchical hybrid SSD
    Hassan Arafat, Ryohei Shimizu and Koh Johguchi,
    2019年電子情報通信学会総合大会, 19 Mar. 2019
  • A CMOS integrated sweat monitoring system for medical applications
    Tera Sakata, Yusuke Mitani, Kosuke Miyaji, Reiji Kaneko, Takaharu Uekura, Hidetoshi Taki, Hideya Momose and Koh Johguchi,
    Proceedings of 2nd International Symposium on Devices, Circuits and Systems, 08 Mar. 2019
  • Hierarchial hybrid solid state drive
    Hassan Arafat, Ryohei Shimizu and Koh Johguchi,
    Proceedings of 2018 IEEE Region 10 Conference, 30 Nov. 2018
  • A compact sweat monitoring system with CMOS capacitive humidity sensor for wearable health-care application
    Yusuke Mitani, Kosuke Miyaji, Reiji Kaneko, Takaharu Uekura, Hideya Momose and Koh Johguchi,
    Extended Abstracts of 2018 Internal Conference on Solid State Devices and Materials (SSDM2018), 20 Sep. 2017
  • 23% faster program and 40% energy reduction of carbon nanotube non-volatile memory with over 1011endurance
    Seyang Ning, Tomoko Ogura-Iwasaki, Kazuya Shimomura, Koh Johguchi, Glen Rosendale, Monte Manning, Darlene Viviani, Thomas Rueckes and Ken Takeuchi
    Digest of Technical Papers, 2014 Symposium on VLSI Technology (VLSI-Technology), 09 Jun. 2014
  • Performance and reliability of NAND flash/SCM hybrid SSD during write/erase cycling
    Shuhei Tanakamaru, Shogo Hosaka, Koh Johguchi and Ken Takeuchi
    Proceedings of 2014 IEEE 6th International Memory Workshop (IMW2014), 19 May 2014
  • Virtical and horizontal location design of program voltage generator for 3D-integrated ReRAM/NAND flash hyhrid SSD
    Tomoya Ishii, Koh Johguchi and Ken Takeuchi
    Proceedings of International Conference on Electronics Packaging 2014 (ICEP2014), 23 Apr. 2014
  • A workload-aware-design of 3D-NAND flash memory for enterprise SSDs
    Chao Sun, Koh Johguchi and Ken Takeuchi
    Proceedings of 2014 15th International Symposium on Quality Electronic Design 2014 (ISQED2014), 10 Mar. 2014
  • Write voltage and read reference current generator for MLC-PCM considering with temperature characteristics
    Koh Johguchi, Toru Egami, Kousuke Miyaji and Ken Takeuchi
    Proceedings of Phase Change Oriented Science (PCOS) 71-72, 28 Nov. 2013
  • Low-power super-lattice phase-change memory without melting and write-pulse down slope
    Koh Johguchi, Kazuaki Yoshioka and Ken Takeuchi
    Proceedings of Phase Change Oriented Science (PCOS) 73-74, 28 Nov. 2013
  • Investigation of multi-level-cell operation with 2-step SET pulse and SET operation on super-lattice phase change memories
    Toru Egami, Koh Johguchi, Senju Yamazaki and Ken Takeuchi
    Extended Abstracts of International Conference on Solid State Devices and Materials (SSDM) 548-549, 24 Sep. 2013
  • TLC/MLC NAND flash mix-and-match design with exchangeable storage array
    Shogo Hachiya, Koh Johguchi, Kousuke Miyaji and Ken Takeuchi
    Extended Abstracts of International Conference on Solid State Devices and Materials (SSDM) 894-895, 24 Sep. 2013
  • SCM capacity and NAND over-provisioning requirements for SCM/NAND flash hybrid enterprise SSD
    Chao Sun, Hiroki Fujii, Kousuke Miyaji, Koh Johguchiand Ken Takeuchi
    Proceedings of 2013 IEEE International Memory Workshop (IMW2013), 26 May 2013
  • Write voltage and read reference current generator for multi-level Ge2Sb2Te5-based phase change memories with temperature characteristics tracking
    Koh Johguchi, Toru Egami and Ken Takeuchi
    Proceedings of 2013 IEEE 5th International Memory Workshop (IMW2013), 26 May 2013
  • Highly reliable, low-power super-lattice phase-change memory without melting and write-pulse down slope
    Koh Johguchi, Toru Egami and Ken Takeuchi
    Proceedings of 2013 IEEE International Reliability Physics Symposium (IRPS2013), 16 Apr. 2013
  • Investigation of program-voltage generator integration for ReRAM and NAND flash memory hybrid three-dimensional solid-state drive
    Teruyoshi Hatanaka, Koh Johguchi and Ken Takeuchi
    Proceedings of International Conference on Electronics Packaging 2013 (ICEP2013), 10 Apr. 2013
  • Over 10-times high-speed, energy efficient 3D TSV-integrated hybrid ReRAM/MLC NAND SSD by intelligent data fragmentation suppression
    Chao Sun, Hiroki Fujii, Kousuke Miyaji, Koh Johguchi, Kazuhide Higuchi and Ken Takeuchi
    18th Asia and South Pacific Design Automation Conference (ASP-DAC2013) University LSI Design Contest, 2013, Mar. 2013
  • High density NAND phase change memory with block-erase architecture and investigations for write and disturb requirements
    Koh Johguchi, Kazuaki Yoshioka and Ken Takeuchi
    Proceedings of Phase Change Oriented Science (PCOS) 36, 29 Nov. 2012
  • An integrated variable positive/negative temperature coefficient read reference generator for MLC PCM/NAND hybrid 3D SSD
    Kousuke Miyaji, Koh Johguchi, Kazuhide Higuchi and Ken Takeuchi
    Proceedings of 2012 IEEE Asian Solid-State Circuits Conference (A-SSCC2012), 12 Nov. 2012
  • x11 performance increase, x6.9 endurance enhancement, 93% energy reduction of 3D TSV-integrated hybrid ReRAM/MLC NAND SSDs by data fragmentation suppression
    Hiroki Fujii, Kousuke Miyaji, Koh Johguchi, Kazuhide Higuchi, Chao Sun and Ken Takeuchi
    Digest of Technical Papers, IEEE Symposium on VLSI Circuits 134-135, 13 Jun. 2012
  • High density NAND phase change memory with block-erase architecture to compromise write and disturb requirements
    Kazuaki Yoshioka, Koh Johguchi and Ken Takeuchi
    Proceedings of 2012 IEEE 4th International Memory Workshop (IMW2012), 20 May 2012
  • A 3D-integration method to compensate output voltage degradation of boost converter for compact solid-state-drives
    Teruyoshi Hatanaka, Koh Johguchi and K. Takeuchi,
    Proceedings of 2011 IEEE International Conference on 3D System Integration (3DIC2011), 31 Jan. 2012
  • Temperature controlling set method for multi-level cell phase change memories: x10 fast write, 80% energy saving
    Koh Johguchi, Toshimichi Shintani, Takahiro Morikawa, Kazuaki Yoshioka and Ken Takeuchi
    Proceedings of 2011 11th Annual Non-Volatile Memory Technology Symposium (NVMTS2011), 07 Nov. 2011
  • 50nm HfO2 ReRAM with 50-times endurance enhancement by set/reset turnback pulse & verify scheme
    Kazuhide Higuchi, Kousuke Miyaji, Koh Johguchi and Ken Takeuchi
    Extended Abstract of 2011 International Conference on Solid State Devices and Materials (SSDM2011), 28 Sep. 2011
  • Adaptive through-silicon-via control with clustering for 3D solid-state-drive boost converter system
    Koh Johguchi, Teruyoshi Hatanaka and Ken Takeuchi
    Extended Abstract of 2011 International Conference on Solid State Devices and Materials (SSDM2011), 28 Sep. 2011
  • The role of functional memories in parallel information processing with localized and distributed systems
    Hans Jürgen Mattausch, Koh Johguchi, Takeshi Kumaki and Tetsushi Koide
    Proceedings of 10th International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT2009), 08 Dec. 2009
  • Actuation of magnetic beads on a CMOS chip for biological applications
    Tomohiro Ishikawa, Koh Johguchi and Fumie Kaneko
    Extended Abstract of 2009 International Conference on. Solid State Devices and Materials (SSDM 2009), 07 Oct. 2009
  • Within-die/wafer variation analysis of basic CMOS circuits based on surface-potential-model HiSIM2
    Koh Johguchi, Akihiro Kaya, Shinya Izumi, Hans Jürgen Mattausch, Tetsushi Koide and Norio Sadachika
    Extended Abstract of 2009 International Conference on Solid State Devices and Materials (SSDM 2009), 07 Oct. 2009
  • Modeling of electron tunneling in SOI-MOSFET and its influence on device characteristics
    Takuro Hayashi, Norio Sadachika, Takahiro Murakami, Daisuke Sugiyama, Shohei Yukuta, Shunta Kusu, Koh Johguchi, Masataka Miyake, Hans Jürgen Mattausch, Mitiko Miura-Mattausch, Shunsuke Baba and Jiro Ida
    Proceedings of 2009 IEEE International SOI Conference, 05 Oct. 2009
  • Variation analysis of CMOS technologies using surface-potential MOSFET model
    Hans Jürgen Mattausch, Akihiro Yumisaki, Norio Sadachika, Akihiro Kaya, Koh Johguchi, Tetsushi Koide, Mitiko Miura-Mattausch
    Proceedings of 8th International Symposium on Diagnostics & Yield (D&Y2009), 22 Jun. 2009
  • Analysis of process variations in 90-nm CMOS technology using ring oscillators
    Akihiro Kaya, Koh Johguchi, Shinya Izumi, Hans Jürgen Mattausch and Tetsushi Koide
    Proceedings of 15th Workshop on Synthesis And System Integration of Mixed Information technologies (SASIMI2009), 09 Mar. 2009
  • A wireless chip for intra-oral temperature measurement
    Tomohiro Ishikawa, Yoshihiro Masui, Koh Johguchi, Takeshi Yoshida and Yuji Murakami
    Proceedings of 15th Workshop on Synthesis And System Integration of Mixed Information technologies (SASIMI2009), 09 Mar. 2009
  • Swallowable biosensor: Development of digestive organs sensors for continuous diagnosis
    Tomohide Noda, Yuji Murakami, Tomohiro Ishikawa, Nobuo Sasaki, Zhang Yi, Tsuyoshi Takeuchi, Takunari Kunimasa, Kazuaki Shibata, Tetsushi Koide, Koh Johguchi and Akio Kuroda
    Proceedings of Pacific Rim Meeting on Electrochemical and Solid-state Science (PRiME 2008), 12 Oct. 2008
  • Static-noise-margin analysis of major SRAM-cell types including production variations for a 90nm CMOS process
    Shinya Izumi, Koh Johguchi, Hans Jürgen Mattausch and Tetsushi Koide
    Proceedings of 14th Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI2007), 15 Oct. 2007
  • 0.6-Tbps, 16-port SRAM design with 2-stage-pipeline and multi-stage-sensing scheme
    Koh Johguchi, Yuya Mukuda, Shinya Izumi, Hans Jürgen Mattausch and Tetsushi Koide
    Proceedings of 33rd European Solid-State Circuits Conference (ESSCIRC2007), 11 Sep. 2007
  • Unified data/instruction cache with hierarchical multi-port architecture and hidden precharge pipeline
    Koh Johguchi, Zhaomin Zhu, Hans Jürgen Mattausch, Tetsushi Koide, Tetsuo Hironaka and Kazuya Tanigawa
    Proceedings of 2006 IEEE Asia Pacific Conf. on Circuits and Systems (APCCAS2006), 06 Dec. 2006
  • Access queues for multi-bank register files enabling enhanced performance of highly parallel processors
    Yuya Mukuda, Ken-ichi Aoyama, Koh Johguchi, Hans Jürgen Mattausch, Tetsushi Koide, Moto Maeda, Tetsuo Hironaka and Kazuya Tanigawa
    Proceedings of 2006 IEEE Region 10 Conference (TENCON2006), 14 Nov. 2006
  • Multi-bank register file for increased performance of highly-parallel processors
    Koh Johguchi, Ken-ichi Aoyama, Tetsuya Sueyoshi, Hans Jürgen Mattausch, Tetsushi Koide, Moto Maeda, Tetsuo Hironaka and Kazuya Tanigawa
    Proceedings of 32nd European Solid-State Circuits Conference (ESSCIRC2006), 19 Sep. 2006
  • Low power bank-based multi-port SRAM design due to bank standby mode
    Zhaomin Zhu, Koh Johguchi, Hans Jürgen Mattausch, Tetsushi Koide and Tetsuo Hironaka
    Proceedings of 47th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS2004), 25 Jul. 2004
  • A novel hierarchical multi-port cache
    Zhaomin Zhu, Koh Johguchi, Hans Jürgen Mattausch, Tetsushi Koide, Tai Hirakawa and Tetsuo Hironaka
    Proceedings of 29th European Solid-State Circuits Conference (ESSCIRC2003), 16 Sep. 2003
  • Combined data/instruction cache with bank-based multi-port architecture
    Koh Johguchi, Zhaomin Zhu, Tai Hirakawa, Tetsushi Koide, Tetsuo Hironaka and Hans Jürgen Mattausch
    Extended Abstract of 2003 International Conference on Solid State Devices and Materials (SSDM2003), 16 Sep. 2003
  • A high-speed and low-power hierarchical multi-port-cache
    Zhaomin Zhu, Koh Johguchi, Hans Jürgen Mattausch, Tetsushi Koide, Tai Hirakawa and Tetsuo Hironaka
    Proceedings of COOL Chips VI 76, 16 Apr. 2003
  • High access bandwidth multi-port-cache design with compact hierarchical 1-port-bank structure
    Zhaomin Zhu, Koh Johguchi, Hans Jürgen Mattausch, Tetsushi Koide, Tai Hirakawa and Tetsuo Hironaka
    Proceedings of 11th Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI2003), 03 Apr. 2003

Courses

  • Advanced Computer Devices
    Shinshu University
  • Mechanics
    Shinshu University
  • Logic Circuits I
    Shinshu University
  • Logic Circuits II
    Shinshu University
  • Logic Circuits I
    Shinshu University
  • Logic Circuits II
    Shinshu University
  • Advanced Computer Devices
    Shinshu University
  • Basic Logic Circuits
    Shinshu University
  • Fundamentals of Micro-Computer
    Shinshu University
  • Logic Circuits I
    Shinshu University
  • Logic Circuits II
    Shinshu University
  • Logic Circuit Design
    Shinshu University
  • Advanced Computer Devices
    Shinshu University
  • Basic Logic Circuits
    Shinshu University
  • Fundamentals of Micro-Computer
    Shinshu University
  • Logic Circuits I
    Shinshu University
  • Logic Circuit Design
    Shinshu University
  • Basic Logic Circuits
    Shinshu University
  • Logic Circuit Design
    Shinshu University
  • Advanced Computer Devices
    Shinshu University
  • Basic Logic Circuits
    Shinshu University
  • Logic Circuit Design
    Shinshu University
  • Basic Logic Circuits
    Shinshu University
  • Logic Circuit Design
    Shinshu University
  • Integrated Circuit and System Design
    Shinshu University
  • Basic Logic Circuits
    Shinshu University
  • Logic Circuit Design
    Shinshu University
  • Integrated Circuit and System Design
    Shinshu University
  • Integration Circuits Design Tutorial 1
    Shinshu University
  • Integration Circuits Design Lab
    Shinshu University
  • Integration Circuits Design Tutorial 2
    Shinshu University
  • Computer Circuit and System Design
    Shinshu University
  • Intercollege Lecture
    Shinshu University
  • Internship 1
    Shinshu University
  • Internship 2
    Shinshu University

Affiliated academic society

  • Jan. 2006
    IEEE (The Institute of Electrical and Electronics Engineers, Inc.)
  • Mar. 2018
    IPSJ (Information Processing Society of Japan)
  • Sep. 2017
    JSAP (Japan Society of Applied Physics)
  • Oct. 2016
    IEICE (Institute of Electronics, Information and Communication Engineers)

Research Themes

  • 深層学習及び脳型コンピューティングに向けた超近接有線通信に関する研究
    科学研究費補助金, 長野工業高等専門学校, 基盤研究(C)
    01 Apr. 2017 - 31 Mar. 2020
  • 高出力アクチュエータ駆動パワーモジュールの集積化技術に関する研究
    科学研究費補助金, 若手研究(B)
    Apr. 2017 - 31 Mar. 2021
  • ナノスケール不揮発性メモリによるビッグデータストレージシステムの開発
    科学研究費補助金, 若手研究(B)
    01 Apr. 2013 - 31 Mar. 2014
  • 階層型多ポートメモリによる命令・データ統合型キャッシュの 集積回路技術に関する研究
    科学研究費補助金, 特別研究員奨励費
    01 Apr. 2004 - 31 Mar. 2008