• 1628 引用
  • 20 h指数
1987 …2020

年単位の研究成果

Pureに変更を加えた場合、すぐここに表示されます。

研究成果

2020

Non-Volatile Coarse Grained Reconfigurable Array Enabling Two-step Store Control for Energy Minimization

Usami, K., Akiba, S., Amano, H., Ikezoe, T., Hiraga, K., Suzuki, K. & Kanda, Y., 2020 4, IEEE Symposium on Low-Power and High-Speed Chips and Systems, COOL CHIPS 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 9097630. (IEEE Symposium on Low-Power and High-Speed Chips and Systems, COOL CHIPS 2020 - Proceedings).

研究成果: Conference contribution

2019

A coarse grained-reconfigurable accelerator with energy efficient MTJ-based non-volatile flip-flops

Ikezoe, T., Amano, H., Akaike, J., Usami, K., Kudo, M., Hiraga, K., Shuto, Y. & Yagami, K., 2019 2 13, 2018 International Conference on Reconfigurable Computing and FPGAs, ReConFig 2018. Andrews, D., Feregrino, C., Cumplido, R. & Stroobandt, D. (版). Institute of Electrical and Electronics Engineers Inc., 8641712. (2018 International Conference on Reconfigurable Computing and FPGAs, ReConFig 2018).

研究成果: Conference contribution

2 引用 (Scopus)

Approximate Computing Technique Using Memoization and Simplified Multiplication

Ono, Y. & Usami, K., 2019 6, 34th International Technical Conference on Circuits/Systems, Computers and Communications, ITC-CSCC 2019. Institute of Electrical and Electronics Engineers Inc., 8793369. (34th International Technical Conference on Circuits/Systems, Computers and Communications, ITC-CSCC 2019).

研究成果: Conference contribution

Level-Shifter-Less Approach for Multi-VDD SoC Design to Employ Body Bias Control in FD-SOI

Usami, K., Kogure, S., Yoshida, Y., Magasaki, R. & Amano, H., 2019 1 1, VLSI-SoC: Opportunities and Challenges Beyond the Internet of Things - 25th IFIP WG 10.5/IEEE International Conference on Very Large Scale Integration, VLSI-SoC 2017, Revised and Extended Selected Papers. Monteiro, J., Elfadel, I. A. M., Sonza Reorda, M., Ugurdag, H. F., Maniatakos, M. & Reis, R. (版). Springer New York LLC, p. 1-21 21 p. (IFIP Advances in Information and Communication Technology; 巻数 500).

研究成果: Conference contribution

Single Supply Level Shifter Circuit using body-bias

Takeyoshi, Y. & Usami, K., 2019 6, 34th International Technical Conference on Circuits/Systems, Computers and Communications, ITC-CSCC 2019. Institute of Electrical and Electronics Engineers Inc., 8793384. (34th International Technical Conference on Circuits/Systems, Computers and Communications, ITC-CSCC 2019).

研究成果: Conference contribution

2018

Building block multi-chip systems using inductive coupling through chip interface

Amano, H., Kuroda, T., Nakamura, H., Usami, K., Kondo, M., Matsutani, H. & Namiki, M., 2018 5 29, Proceedings - International SoC Design Conference 2017, ISOCC 2017. Institute of Electrical and Electronics Engineers Inc., p. 152-154 3 p. (Proceedings - International SoC Design Conference 2017, ISOCC 2017).

研究成果: Conference contribution

Digital embedded memory scheme using voltage scaling and body bias separation for low-power system

Yoshida, Y., Usami, K. & Amano, H., 2018 5 29, Proceedings - International SoC Design Conference 2017, ISOCC 2017. Institute of Electrical and Electronics Engineers Inc., p. 148-149 2 p.

研究成果: Conference contribution

1 引用 (Scopus)

Energy Efficient Write Verify and Retry Scheme for MTJ Based Flip-Flop and Application

Usami, K., Akaike, J., Akiba, S., Kudo, M., Amano, H., Ikezoe, T., Hiraga, K., Shuto, Y. & Yagami, K., 2018 11 15, Proceedings - 7th IEEE Non-Volatile Memory Systems and Applications Symposium, NVMSA 2018. Institute of Electrical and Electronics Engineers Inc., p. 91-98 8 p. 8537701

研究成果: Conference contribution

2 引用 (Scopus)

Level-shifter free approach for multi-Vdd SOTB employing adaptive Vt modulation for pMOSFET

Usami, K., Kogure, S., Yoshida, Y., Magasaki, R. & Amano, H., 2018 3 7, 2017 IEEE SOI-3D-Subthreshold Microelectronics Unified Conference, S3S 2017. Institute of Electrical and Electronics Engineers Inc., 巻 2018-March. p. 1-3 3 p.

研究成果: Conference contribution

1 引用 (Scopus)
2017

Design and implementation methodology of energy-efficient Standard Cell Memory with optimized Body-Bias separation in Silicon-on-Thin-BOX

Yoshida, Y. & Usami, K., 2017 6 29, Joint International EUROSOl Workshop and International Conference on Ultimate Integration on Silicon-ULIS, EUROSOI-ULIS 2017 - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 43-46 4 p. 7962596

研究成果: Conference contribution

1 引用 (Scopus)

Level-shifter-less approach for multi-VDD design to use body bias control in FD-SOI

Usami, K., Kogure, S., Yoshida, Y., Magasaki, R. & Amano, H., 2017 12 13, 25th IFIP/IEEE International Conference on Very Large Scale Integration, VLSI-SoC 2017 - Proceedings. IEEE Computer Society, 8203473

研究成果: Conference contribution

1 引用 (Scopus)

Nonvolatile power gating with MTJ based nonvolatile flip-flops for a microprocessor

Kudo, M. & Usami, K., 2017 10 10, NVMSA 2017 - 6th IEEE Non-Volatile Memory Systems and Applications Symposium. Institute of Electrical and Electronics Engineers Inc., 8064472. (NVMSA 2017 - 6th IEEE Non-Volatile Memory Systems and Applications Symposium).

研究成果: Conference contribution

1 引用 (Scopus)
2016

An operating system guided fine-grained power gating control based on runtime characteristics of applications

Koshiba, A., Sato, M., Usami, K., Amano, H., Sakamoto, R., Kondo, M., Nakamura, H. & Namiki, M., 2016 8 1, : : IEICE Transactions on Electronics. E99C, 8, p. 926-935 10 p.

研究成果: Article

A perpetuum mobile 32bit CPU on 65nm SOTB CMOS technology with reverse-body-bias assisted sleep mode

Kamohara, S., Sugii, N., Ishibashi, K., Usami, K., Amano, H., Kobayashi, K. & Pham, C. K., 2016 5 25, 2014 IEEE Hot Chips 26 Symposium, HCS 2014. Institute of Electrical and Electronics Engineers Inc., 7478838

研究成果: Conference contribution

A scalable 3D heterogeneous multi-core processor with inductive-coupling thruchip interface

Miura, N., Koizumi, Y., Sasaki, E., Take, Y., Matsutani, H., Kuroda, T., Amano, H., Sakamoto, R., Namiki, M., Usami, K., Kondo, M. & Nakamura, H., 2016 5 24, 2013 IEEE Hot Chips 25 Symposium, HCS 2013. Institute of Electrical and Electronics Engineers Inc., 7478328. (2013 IEEE Hot Chips 25 Symposium, HCS 2013).

研究成果: Conference contribution

Multi-voltage variable pipeline routers with the same clock frequency for low-power network-on-chips systems

Ahmed, A. B., Matsutani, H., Koibuchi, M., Usami, K. & Amano, H., 2016 8 1, : : IEICE Transactions on Electronics. E99C, 8, p. 909-917 9 p.

研究成果: Article

2 引用 (Scopus)
10 引用 (Scopus)
2015

A fine-grained power gating control on linux monitoring power consumption of processor functional units

Koshiba, A., Wada, M., Sakamoto, R., Sato, M., Kosaka, T., Usami, K., Amano, H., Kondo, M., Nakamura, H. & Namiki, M., 2015 7 1, : : IEICE Transactions on Electronics. E98C, 7, p. 559-568 10 p.

研究成果: Article

2 引用 (Scopus)

A leakage current monitor circuit using silicon on thin BOX MOSFET for dynamic back gate bias control

Okuhara, H., Usami, K. & Amano, H., 2015 7 14, IEEE Symposium on Low-Power and High-Speed Chips, COOL Chips XVIII - Proceedings. Institute of Electrical and Electronics Engineers Inc., 7158656

研究成果: Conference contribution

1 引用 (Scopus)

An optimal power supply and body bias voltage for a ultra low power micro-controller with silicon on thin box MOSFET

Okuhara, H., Kitamori, K., Fujita, Y., Usami, K. & Amano, H., 2015 9 21, Proceedings of the International Symposium on Low Power Electronics and Design. Institute of Electrical and Electronics Engineers Inc., 巻 2015-September. p. 207-212 6 p. 7273515

研究成果: Conference contribution

13 引用 (Scopus)

A perpetuum mobile 32bit CPU on 65nm SOTB CMOS technology with reverse-body-bias assisted sleep mode

Ishibashi, K., Sugii, N., Kamohara, S., Usami, K., Amano, H., Kobayashi, K. & Pham, C. K., 2015 7 1, : : IEICE Transactions on Electronics. E98C, 7, p. 536-543 8 p.

研究成果: Article

17 引用 (Scopus)

Measurement of the minimum energy point in Silicon on Thin-BOX(SOTB) and bulk MOSFET

Nakamura, S., Kawasaki, J., Kumagai, Y. & Usami, K., 2015 3 18, EUROSOI-ULIS 2015 - 2015 Joint International EUROSOI Workshop and International Conference on Ultimate Integration on Silicon. Institute of Electrical and Electronics Engineers Inc., p. 193-196 4 p. 7063746

研究成果: Conference contribution

12 引用 (Scopus)

Power gating for FDSOI using dynamically body-biased power switch

Kumagai, Y., Kudo, M. & Usami, K., 2015 3 18, EUROSOI-ULIS 2015 - 2015 Joint International EUROSOI Workshop and International Conference on Ultimate Integration on Silicon. Institute of Electrical and Electronics Engineers Inc., p. 221-224 4 p. 7063813

研究成果: Conference contribution

2014

A Perpetuum Mobile 32bit CPU with 13.4pJ/cycle, 0.14μA sleep current using Reverse Body Bias Assisted 65nm SOTB CMOS technology

Ishibashi, K., Sugii, N., Usami, K., Amano, H., Kobayashi, K., Pham, C. K., Makiyama, H., Yamamoto, Y., Shinohara, H., Iwamatsu, T., Yamaguchi, Y., Oda, H., Hasegawa, T., Okanishi, S., Yanagita, H., Kamohara, S., Kadoshima, M., Maekawa, K., Yamashita, T., Le, D. H. および5人, Yomogita, T., Kudo, M., Kitamori, K., Kondo, S. & Manzawa, Y., 2014 1 1, IEEE Symposium on Low-Power and High-Speed Chips - Proceedings for 2014 IEEE COOL Chips XVII. IEEE Computer Society, 6842954. (IEEE Symposium on Low-Power and High-Speed Chips - Proceedings for 2014 IEEE COOL Chips XVII).

研究成果: Conference contribution

20 引用 (Scopus)

A thermal management system for building block computing systems

Fujita, Y., Usami, K. & Amano, H., 2014 11 6, Proceedings - 2014 IEEE 8th International Symposium on Embedded Multicore/Manycore SoCs, MCSoC 2014. Institute of Electrical and Electronics Engineers Inc., p. 165-171 7 p. 6949468. (Proceedings - 2014 IEEE 8th International Symposium on Embedded Multicore/Manycore SoCs, MCSoC 2014).

研究成果: Conference contribution

2 引用 (Scopus)

Design and control methodology for fine grain power gating based on energy characterization and code profiling of microprocessors

Usami, K., Kudo, M., Matsunaga, K., Kosaka, T., Tsurui, Y., Wang, W., Amano, H., Kobayashi, H., Sakamoto, R., Namiki, M., Kondo, M. & Nakamura, H., 2014, 2014 19th Asia and South Pacific Design Automation Conference, ASP-DAC 2014 - Proceedings. p. 843-848 6 p. 6742995. (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC).

研究成果: Conference contribution

9 引用 (Scopus)

Design and evaluation of fine-grained power-gating for embedded microprocessors

Kondo, M., Kobyashi, H., Sakamoto, R., Wada, M., Tsukamoto, J., Namiki, M., Wang, W., Amano, H., Matsunaga, K., Kudo, M., Usami, K., Komoda, T. & Nakamura, H., 2014 1 1, Proceedings - Design, Automation and Test in Europe, DATE 2014. Institute of Electrical and Electronics Engineers Inc., 6800359. (Proceedings -Design, Automation and Test in Europe, DATE).

研究成果: Conference contribution

14 引用 (Scopus)

Foreword: Special section on VLSI design and CAD algorithms

Yamada, A., Higami, Y., Takagi, K., Amagasaki, M., Ikeda, M., Ishihara, T., Ito, K., Usami, K., Okada, K., Kajihara, S., Kaneko, M., Kawaguchi, H., Kimura, S., Kurokawa, A., Shibata, Y., Seto, K., Song, T., Takashima, Y., Takahashi, A., Takenaka, T. および17人, Togawa, N., Tomiyama, H., Nakatake, S., Nakamura, Y., Hashimoto, M., Hamaguchi, K., Higuchi, H., Hirose, T., Fukuda, D., Matsumoto, T., Miura, Y., Minato, S. I., Minami, F., Yamashita, S., Yuminaka, Y., Yoshikawa, M. & Watanabe, T., 2014 12 1, : : IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E97A, 12, p. 2366 1 p.

研究成果: Article

Ultralow-voltage design and technology of silicon-on-thin-buried-oxide (SOTB) CMOS for highly energy efficient electronics in IoT era

Kamohara, S., Sugii, N., Yamamoto, Y., Makiyama, H., Yamashita, T., Hasegawa, T., Okanishi, S., Yanagita, H., Kadoshima, M., Maekawa, K., Mitani, H., Yamagata, Y., Oda, H., Yamaguchi, Y., Ishibashi, K., Amano, H., Usami, K., Kobayashi, K., Mizutani, T. & Hiramoto, T., 2014 9 8, Digest of Technical Papers - Symposium on VLSI Technology. Institute of Electrical and Electronics Engineers Inc., 6894413. (Digest of Technical Papers - Symposium on VLSI Technology).

研究成果: Conference contribution

9 引用 (Scopus)

Unbalanced buffer tree synthesis to suppress ground bounce for fine-grain power gating

Usami, K., Miyauchi, M., Kudo, M., Takagi, K., Amano, H., Namiki, M., Kondo, M. & Nakamura, H., 2014 12 2, 2014 International Symposium on System-on-Chip, SoC 2014. Daniel, O., Ellervee, P., Milojevic, D., Nurmi, J. & Paakki, T. (版). Institute of Electrical and Electronics Engineers Inc., 6972438. (2014 International Symposium on System-on-Chip, SoC 2014).

研究成果: Conference contribution

1 引用 (Scopus)
2013

An energy-efficient high-level synthesis algorithm incorporating interconnection delays and dynamic multiple supply voltages

Abe, S. Y., Shi, Y., Usami, K., Yanagisawa, M. & Togawa, N., 2013 8 15, 2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013. 6533808. (2013 International Symposium on VLSI Design, Automation, and Test, VLSI-DAT 2013).

研究成果: Conference contribution

A scalable 3D heterogeneous multi-core processor with inductive-coupling ThruChip interface

Miura, N., Koizumi, Y., Sasaki, E., Take, Y., Matsutani, H., Kuroda, T., Amano, H., Sakamoto, R., Namiki, M., Usami, K., Kondo, M. & Nakamura, H., 2013 8 15, IEEE Symposium on Low-Power and High-Speed Chips - Proceedings for 2013 COOL Chips XVI. 6547916. (IEEE Symposium on Low-Power and High-Speed Chips - Proceedings for 2013 COOL Chips XVI).

研究成果: Conference contribution

1 引用 (Scopus)

A scalable 3D heterogeneous multicore with an inductive ThruChip interface

Miura, N., Koizumi, Y., Take, Y., Matsutani, H., Kuroda, T., Amano, H., Sakamoto, R., Namiki, M., Usami, K., Kondo, M. & Nakamura, H., 2013 11 1, : : IEEE Micro. 33, 6, p. 6-15 10 p., 6684194.

研究成果: Article

21 引用 (Scopus)

Demonstration of a heterogeneous multi-core processor with 3-D inductive coupling links

Koizumi, Y., Miura, N., Take, Y., Matsutani, H., Kuroda, T., Amano, H., Sakamoto, R., Namiki, M., Usami, K., Kondo, M. & Nakamura, H., 2013 1 1.

研究成果: Paper

Fine-grained run-tume power gating through co-optimization of circuit, architecture, and system software design

Nakamura, H., Wang, W., Ohta, Y., Usami, K., Amano, H., Kondo, M. & Namiki, M., 2013 4, : : IEICE Transactions on Electronics. E96-C, 4, p. 404-412 9 p.

研究成果: Article

2 引用 (Scopus)
2012

A multi-Vdd dynamic variable-pipeline on-chip router for CMPs

Matsutani, H., Hirata, Y., Koibuchi, M., Usami, K., Nakamura, H. & Amano, H., 2012 4 26, ASP-DAC 2012 - 17th Asia and South Pacific Design Automation Conference. p. 407-412 6 p. 6164982. (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC).

研究成果: Conference contribution

14 引用 (Scopus)

CMA-Cube: A scalable reconfigurable accelerator with 3-D wireless inductive coupling interconnect

Koizumi, Y., Sasaki, E., Amano, H., Matsutani, H., Take, Y., Kuroda, T., Sakamoto, R., Namiki, M., Usami, K., Kondo, M. & Nakamura, H., 2012 12 12, Proceedings - 22nd International Conference on Field Programmable Logic and Applications, FPL 2012. p. 543-546 4 p. 6339375. (Proceedings - 22nd International Conference on Field Programmable Logic and Applications, FPL 2012).

研究成果: Conference contribution

4 引用 (Scopus)

Dynamic power control with a heterogeneous multi-core system using a 3-D wireless inductive coupling interconnect

Koizumi, Y., Amano, H., Matsutani, H., Miura, N., Kuroda, T., Sakamoto, R., Namiki, M., Usami, K., Kondo, M. & Nakamura, H., 2012 12 1, FPT 2012 - 2012 International Conference on Field-Programmable Technology. p. 293-296 4 p. 6412150. (FPT 2012 - 2012 International Conference on Field-Programmable Technology).

研究成果: Conference contribution

7 引用 (Scopus)

Efficient leakage power saving by sleep depth controlling for multi-mode power gating

Takeda, S., Miwa, S., Usami, K. & Nakamura, H., 2012 7 16, Proceedings of the 13th International Symposium on Quality Electronic Design, ISQED 2012. p. 625-632 8 p. 6187558. (Proceedings - International Symposium on Quality Electronic Design, ISQED).

研究成果: Conference contribution

4 引用 (Scopus)

Fine-grained power control using a multi-voltage variable pipeline router

Nakamura, T., Matsutani, H., Koibuchi, M., Usami, K. & Amano, H., 2012 12 1, p. 59-66. 8 p.

研究成果: Paper

4 引用 (Scopus)

Stepwise sleep depth control for run-time leakage power saving

Takeda, S., Miwa, S., Usami, K. & Nakamura, H., 2012 5 22, GLSVLSI'12 - Proceedings of the Great Lakes Symposium on VLSI 2012. p. 233-238 6 p. (Proceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI).

研究成果: Conference contribution

2 引用 (Scopus)

Trade-off analysis of fine-grained power gating methods for functional units in a CPU

Wang, W., Ohta, Y., Ishii, Y., Usami, K. & Amano, H., 2012 7 25, Symposium on Low-Power and High-Speed Chips - Proceedings for 2012 IEEE COOL Chips XV. 6216587. (Symposium on Low-Power and High-Speed Chips - Proceedings for 2012 IEEE COOL Chips XV).

研究成果: Conference contribution

4 引用 (Scopus)
2011

A 2.72GOPS/11mW low power reconfigurable accelerator with a highly parallel datapath consisting of combinatorial circuits in 65nm CMOS

Ozaki, N., Yasuda, Y., Saito, Y., Ikebuchi, D., Kimura, M., Amano, H., Nakamura, H., Usami, K., Namiki, M. & Kondo, M., 2011 12 1, 2011 International Symposium on Integrated Circuits, ISIC 2011. p. 579-584 6 p. 6131929. (2011 International Symposium on Integrated Circuits, ISIC 2011).

研究成果: Conference contribution

Cool mega-array: A highly energy efficient reconfigurable accelerator

Ozaki, N., Yoshihiro, Y., Saito, Y., Ikebuchi, D., Kimura, M., Amano, H., Nakamura, H., Usami, K., Namiki, M. & Kondo, M., 2011 12 1, 2011 International Conference on Field-Programmable Technology, FPT 2011. 6132668. (2011 International Conference on Field-Programmable Technology, FPT 2011).

研究成果: Conference contribution

13 引用 (Scopus)

Cool mega-arrays: Ultralow-power reconfigurable accelerator chips

Ozaki, N., Yasuda, Y., Izawa, M., Saito, Y., Ikebuchi, D., Amano, H., Nakamura, H., Usami, K., Namiki, M. & Kondo, M., 2011 11 1, : : IEEE Micro. 31, 6, p. 6-18 13 p., 6060791.

研究成果: Article

39 引用 (Scopus)

Design and implementation fine-grained power gating on microprocessor functional units

Lei, Z., Ikebuchi, D., Usami, K., Namiki, M., Kondo, M., Nakamura, H. & Amano, H., 2011 12 5, : : IPSJ Transactions on System LSI Design Methodology. 4, p. 182-192 11 p.

研究成果: Article

3 引用 (Scopus)