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ORCIDTakayuki Kawahara
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2020 – today
- 2024
[j29]Taichi Megumi
, Akari Endo, Takayuki Kawahara:
Scalable Fully-Coupled Annealing Processing System Implementing 4096 Spins Using 22nm CMOS LSI. IEEE Access 12: 19711-19723 (2024)- [j28]Shinjiro Kitahara, Taichi Megumi, Akari Endo, Takayuki Kawahara:
Implementation and Evaluation of Two Independent Ising Machines on Same FPGA Board by Reducing Number of Interactions Inside Ising Machine. IEEE Access 12: 145530-145539 (2024) - [j27]Yuya Fujiwara, Takayuki Kawahara:
TGBNN: Training Algorithm of Binarized Neural Network With Ternary Gradients for MRAM-Based Computing-in-Memory Architecture. IEEE Access 12: 150962-150974 (2024) - 2023
- [c35]Yuya Fujiwara, Takayuki Kawahara:
BNN Training Algorithm with Ternary Gradients and BNN based on MRAM Array. TENCON 2023: 311-316 - [c34]Yuya Hayakawa, Yuga Aoki, Kenjiro Mori, Takumi Ito, Takayuki Kawahara:
Experimental Investigation of the Generalization Performance of Neural Network in Defect Localization System for Steel Pipe Health Monitoring. TENCON 2023: 942-947 - 2022
- [j26]Kaoru Yamamoto, Takayuki Kawahara:
Scalable fully coupled annealing processing system and multi-chip FPGA implementation. Microprocess. Microsystems 95: 104674 (2022) - [c33]Akihiro Yamada, Yuwa Kishi, Takayuki Kawahara:
Bi-directional read method to reduce SOT-specific read disturbance for highly reliable SOT-MRAM. IMW 2022: 1-4 - 2021
- [j25]Ryoma Iimura, Satoshi Kitamura, Takayuki Kawahara:
Annealing Processing Architecture of 28-nm CMOS Chip for Ising Model With 512 Fully Connected Spins. IEEE Trans. Circuits Syst. I Regul. Pap. 68(12): 5061-5071 (2021) - [c32]Yudai Taguchi, Ryoma Iimura, Takayuki Kawahara:
FPGA Implementation of Support Vector Machine Using Ising Model for AI on Things. CIVEMSA 2021: 1-5 - 2020
- [j24]Ryoto Ono, Kenta Someya, Takayuki Kawahara:
A novel Ising model processing achieving all interactions only by adjacent spins for a high-speed solver for versatile Ising machines. Microprocess. Microsystems 78: 103251 (2020) - [c31]Kohei Koike, Kenta Suzuki, Mengnan Ke, Kenjiro Mori, Takumi Ito, Takayuki Kawahara:
Damage-Position Identification of Wooden-House Models for Structural Health Monitoring Using Machine Learning. APCCAS 2020: 114-117 - [c30]Kenta Suzuki, Takumi Ito, Kohei Koike, Takayuki Kawahara, Mengnan Ke, Kenjiro Mori:
Improvement of Generalization Performance for Timber Health Monitoring using Machine Learning. APCCAS 2020: 197-200 - [c29]Ryoma Iimura, Satoshi Kitamura, Takayuki Kawahara:
Implementation of Multi Spin-Thread Architecture to Fully-Connected Annealing Processing AI Chips. MWSCAS 2020: 85-88
2010 – 2019
- 2019
- [c28]Ryota Tanida, Jing Ma, Takashi Nakajima, Mikio Hasegawa, Takahiro Yamamoto, Takumi Ito, Takayuki Kawahara, Atsushi Yamamoto, Noriaki Takahashi, Natsuhiko Sakiyama, Sakuya Kishi, Takayuki Kishimoto, So Hasegawa, Kenjiro Mori, Yoichiro Hashizume:
Machine Learning Classification Methods using Data of 3-axis Acceleration Sensors equipped with Wireless Communication Means for Locating Wooden House Structural Damage. APCCAS 2019: 337-340 - [c27]Tatsuya Hiejima, Shun Kawashima, Mengnan Ke, Takayuki Kawahara:
Effectiveness of Synchronization and Cooperative Behavior of Multiple Robots based on Swarm AI. APCCAS 2019: 341-344 - [c26]Akira Minamisawa, Ryoma Iimura, Takayuki Kawahara:
High-speed Sparse Ising Model on FPGA. MWSCAS 2019: 670-673 - 2018
- [c25]Ryota Tanida, Ryo Oiwa, Takumi Ito, Takayuki Kawahara:
Wooden Framed House Structural Health Monitoring by System Identification and Damage Detection under Dynamic Motion with Artificial Intelligence Sensor using a Model of House including Braces. CIVEMSA 2018: 1-5 - [c24]Takumi Ito, Changhoon Choi, Takahiro Yamamoto, Takashi Nakajima, Takayuki Kawahara, Yoichiro Hashizume, Mikio Hasegawa:
Live Demonstration of IoT and AI System for Recognition of States of Buildings subjected to Seismic Vibration Motion. ISCAS 2018: 1- - 2017
- [j23]Zule Xu, Takayuki Kawahara:
A Saturating-Integrator-Based Behavioral Model of Ring Oscillator Facilitating PLL Design. IEICE Trans. Electron. 100-C(4): 370-372 (2017) - [j22]Yasushi Fukuda, Zule Xu, Takayuki Kawahara:
Robustness Evaluation of Restricted Boltzmann Machine against Memory and Logic Error. IEICE Trans. Electron. 100-C(12): 1118-1121 (2017) - [c23]Ryo Oiwa, Takumi Ito, Takayuki Kawahara:
Timber Health Monitoring using piezoelectric sensor and machine learning. CIVEMSA 2017: 123-128 - 2016
- [c22]Kenta Someya, Ryoto Ono, Takayuki Kawahara:
Novel Ising model using dimension-control for high-speed solver for Ising machines. NEWCAS 2016: 1-4 - 2015
- [c21]Yuki Fukushima, Isamu Wakabayashi, Takayuki Kawahara:
Equalization for the FDM System Using Mach-Zehnder Filters. AINA Workshops 2015: 727-732 - [c20]Isamu Wakabayashi, Yuki Fukushima, Takayuki Kawahara:
An eight-channel FDM system using Mach-Zehnder filters with cosine roll-off band-limiting characteristics. APSITT 2015: 1-3 - [c19]H. Kazama, Takayuki Kawahara:
STT-RAM read stability in DRAM operating region. NVMTS 2015: 1-4 - 2014
- [c18]Tzi-Dar Chiueh, Toru Shimizu, Gregory Chen, Chen-Yi Lee, Charles Hsu, Tihao Chiang, Zhihua Wang, Junghwan Choi, Jongwoo Lee, Yasumoto Tomita, Takayuki Kawahara:
What is a good way to expand a silicon value to a solution value? A-SSCC 2014: 389-394 - 2013
- [c17]Yoshimitsu Yanagawa, Naoshi Itabashi, Sonoko Migitaka, Takahide Yokoi, Makiko Yoshida, Takayuki Kawahara:
On-chip base sequencing using a two-stage reaction-control scheme: 3.6-times-faster and 1/100-reduced-data-volume ISFET-based DNA sequencer. BioCAS 2013: 178-181 - 2012
- [j21]Kazuo Ono, Yoshimitsu Yanagawa, Akira Kotabe, Riichiro Takemura, Tatsuo Nakagawa, Tomio Iwasaki, Takayuki Kawahara:
Fluctuation Tolerant Charge-Integration Read Scheme for Ultrafast DNA Sequencing with Nanopore Device. IEICE Trans. Electron. 95-C(4): 651-660 (2012) - [j20]Takayuki Kawahara, Kenchi Ito, Riichiro Takemura, Hideo Ohno:
Spin-transfer torque RAM technology: Review and prospect. Microelectron. Reliab. 52(4): 613-627 (2012) - [c16]Yoshimitsu Yanagawa, Kazuo Ono, Akira Kotabe, Riichiro Takemura, Tatsuo Nakagawa, Tomio Iwasaki, Takayuki Kawahara:
Fluctuation tolerant read scheme for ultrafast DNA sequencing with nanopore device. ISCAS 2012: 2299-2302 - 2011
- [j19]Takayuki Kawahara:
Scalable Spin-Transfer Torque RAM Technology for Normally-Off Computing. IEEE Des. Test Comput. 28(1): 52-63 (2011) - 2010
- [j18]Riichiro Takemura, Takayuki Kawahara, Katsuya Miura, Hiroyuki Yamamoto, Jun Hayakawa, Nozomu Matsuzaki, Kazuo Ono, Michihiko Yamanouchi, Kenchi Ito, Hiromasa Takahashi, Shoji Ikeda, Haruhiro Hasegawa, Hideyuki Matsuoka, Hideo Ohno:
A 32-Mb SPRAM With 2T1R Memory Cell, Localized Bi-Directional Write Driver and '1'/'0' Dual-Array Equalized Reference Scheme. IEEE J. Solid State Circuits 45(4): 869-879 (2010)
2000 – 2009
- 2008
- [j17]Takayuki Kawahara, Riichiro Takemura, Katsuya Miura, Jun Hayakawa, Shoji Ikeda, Young Min Lee, Ryutaro Sasaki, Yasushi Goto, Kenchi Ito, Toshiyasu Meguro, Fumihiro Matsukura, Hiromasa Takahashi, Hideyuki Matsuoka, Hideo Ohno:
2 Mb SPRAM (SPin-Transfer Torque RAM) With Bit-by-Bit Bi-Directional Current Write and Parallelizing-Direction Current Read. IEEE J. Solid State Circuits 43(1): 109-120 (2008) - [c15]Masanao Yamaoka, Kenichi Osada, Takayuki Kawahara:
A cell-activation-time controlled SRAM for low-voltage operation in DVFS SoCs using dynamic stability analysis. ESSCIRC 2008: 286-289 - 2007
- [j16]Takayuki Kawahara:
Low-Voltage Embedded RAMs in Nanometer Era. IEICE Trans. Electron. 90-C(4): 735-742 (2007) - [j15]Riichiro Takemura, Kiyoo Itoh, Tomonori Sekiguchi, Satoru Akiyama, Satoru Hanzawa, Kazuhiko Kajigaya, Takayuki Kawahara:
Long-Retention-Time, High-Speed DRAM Array with 12-F2 Twin Cell for Sub 1-V Operation. IEICE Trans. Electron. 90-C(4): 758-764 (2007) - [c14]Masanao Yamaoka, Takayuki Kawahara:
Operating-margin-improved SRAM with column-at-a-time body-bias control technique. ESSCIRC 2007: 396-399 - [c13]Kiyoo Itoh, Masanao Yamaoka, Takayuki Kawahara:
Low-voltage limitations of deep-sub-100-nm CMOS LSIs: view of memory designers. ACM Great Lakes Symposium on VLSI 2007: 529-533 - [c12]Takayuki Kawahara, Riichiro Takemura, Hiromasa Takahashi, Hideo Ohno:
SPRAM (SPin-transfer torque RAM) design and its impact on digital systems. ICECS 2007: 1011-1014 - [c11]Satoru Hanzawa, Naoki Kitai, Kenichi Osada, Akira Kotabe, Yuichi Matsui, Nozomu Matsuzaki, Norikatsu Takaura, Masahiro Moniwa, Takayuki Kawahara:
A 512kB Embedded Phase Change Memory with 416kB/s Write Throughput at 100μA Cell Write Current. ISSCC 2007: 474-616 - [c10]Takayuki Kawahara, Riichiro Takemura, Katsuya Miura, Jun Hayakawa, Shoji Ikeda, Young Min Lee, Ryutaro Sasaki, Yasushi Goto, Kenchi Ito, Toshiyasu Meguro, Fumihiro Matsukura, Hiromasa Takahashi, Hideyuki Matsuoka, Hideo Ohno:
2Mb Spin-Transfer Torque RAM (SPRAM) with Bit-by-Bit Bidirectional Current Write and Parallelizing-Direction Current Read. ISSCC 2007: 480-617 - 2006
- [j14]Satoru Akiyama, Tomonori Sekiguchi, Kazuhiko Kajigaya, Satoru Hanzawa, Riichiro Takemura, Takayuki Kawahara:
Concordant memory design: an integrated statistical design approach for multi-gigabit DRAM. IEEE J. Solid State Circuits 41(1): 107-112 (2006) - [j13]Masanao Yamaoka, Noriaki Maeda, Yoshihiro Shinozaki, Yasuhisa Shimazaki, Koji Nii, Shigeru Shimada, Kazumasa Yanagisawa, Takayuki Kawahara:
90-nm process-variation adaptive embedded SRAM modules with power-line-floating write technique. IEEE J. Solid State Circuits 41(3): 705-711 (2006) - [j12]Masanao Yamaoka, Ryuta Tsuchiya, Takayuki Kawahara:
SRAM Circuit With Expanded Operating Margin and Reduced Stand-By Leakage Current Using Thin-BOX FD-SOI Transistors. IEEE J. Solid State Circuits 41(11): 2366-2372 (2006) - [c9]Kiyoo Itoh, Masashi Horiguchi, Takayuki Kawahara:
Ultra-low voltage nano-scale embedded RAMs. ISCAS 2006 - 2005
- [j11]Hideaki Kurata, Shunichi Saeki, Takashi Kobayashi, Yoshitaka Sasago, Tsuyoshi Arigane, Kazuo Otsuga, Takayuki Kawahara:
Constant-charge-injection programming: a novel high-speed programming method for multilevel flash memories. IEEE J. Solid State Circuits 40(2): 523-531 (2005) - [j10]Satoru Hanzawa, Takeshi Sakata, Kazuhiko Kajigaya, Riichiro Takemura, Takayuki Kawahara:
A large-scale and low-power CAM architecture featuring a one-hot-spot block code for IP-address lookup in a network router. IEEE J. Solid State Circuits 40(4): 853-861 (2005) - [c8]Kenichi Osada, Takayuki Kawahara, Riichiro Takemura, Naoki Kitai, Norikatsu Takaura, Nozomu Matsuzaki, Kenzo Kurotsuchi, Hiroshi Moriya, Masahiro Moniwa:
Phase change RAM operated with 1.5-V CMOS as low cost embedded memory. CICC 2005: 431-434 - [c7]Satoru Hanzawa, Takeshi Sakata, Kazuhiko Kajigaya, Riichiro Takemura, Tomonori Sekiguchi, Takayuki Kawahara:
A ternary/quaternary CAM architecture with an NPU-side IP-address compression scheme and a dynamic re-configurable CODEC scheme for large-scale flow-table lookup. ICC 2005: 1048-1052 - [c6]Masayuki Miyazaki, Goichi Ono, Takayuki Kawahara:
Optimum threshold-voltage tuning for low-power, high-performance microprocessor. ISCAS (1) 2005: 17-20 - [c5]Goichi Ono, Masayuki Miyazaki, Kazuki Watanabe, Takayuki Kawahara:
An LSI system with locked in temperature insensitive state achieved by using body bias technique. ISCAS (1) 2005: 632-635 - 2004
- [j9]Kenichi Osada, Ken Yamaguchi, Yoshikazu Saitoh, Takayuki Kawahara:
SRAM immunity to cosmic-ray-induced multierrors based on analysis of an induced parasitic bipolar effect. IEEE J. Solid State Circuits 39(5): 827-833 (2004) - [c4]Kenichi Osada, Naoki Kitai, Shiro Kamohara, Takayuki Kawahara:
Analysis of SRAM neutron-induced errors based on the consideration of both charge-collection and parasitic-bipolar failure modes. CICC 2004: 357-360 - [c3]Goichi Ono, Masayuki Miyazaki, Hidetoshi Tanaka, Nono Ohkubo, Takayuki Kawahara:
Temperature referenced supply voltage and forward-body-bias control (TSFC) architecture for minimum power consumption [ubiquitous computing processors]. ESSCIRC 2004: 391-394 - [c2]Kiyoo Itoh, Kenichi Osada, Takayuki Kawahara:
Low-Voltage Embedded RAMs - Current Status and Future Trends. PATMOS 2004: 3-15 - 2003
- [j8]Yoshinobu Nakagome, Masashi Horiguchi, Takayuki Kawahara, Kiyoo Itoh:
Review and future prospects of low-voltage RAM circuits. IBM J. Res. Dev. 47(5-6): 525-552 (2003) - [c1]Masayuki Miyazaki, Hidetoshi Tanaka, Goichi Ono, Tomohiro Nagano, Norio Ohkubo, Takayuki Kawahara, Kazuo Yano:
Electric-energy generation using variable-capacitive resonator for power-free LSI: efficiency analysis and fundamental experiment. ISLPED 2003: 193-198
1990 – 1999
- 1998
- [j7]Takayuki Kawahara, Yusuke Jyouno, Syun-ichi Saeki, Naoki Miyamoto, Katsutaka Kimura:
20-Mb/s erase/record flash memory by asymmetrical operation. IEEE J. Solid State Circuits 33(1): 119-125 (1998) - [j6]Takayuki Kawahara, Syun-ichi Saeki, Yusuke Jyouno, Naoki Miyamoto, Takashi Kobayashi, Katsutaka Kimura:
Internal voltage generator for low voltage, quarter-micrometer flash memories. IEEE J. Solid State Circuits 33(1): 126-132 (1998) - 1996
- [j5]Takayuki Kawahara, Takashi Kobayashi, Yusuke Jyouno, Syun-ichi Saeki, Naoki Miyamoto, T. Adachi, Masataka Kato, Akihiko Sato, J. Yugami, Hitoshi Kume, Katsutaka Kimura:
Bit-line clamped sensing multiplex and accurate high voltage generator for quarter-micron flash memories. IEEE J. Solid State Circuits 31(11): 1590-1600 (1996) - 1995
- [j4]Takayuki Kawahara, Naoki Miyamoto, Syun-ichi Saeki, Yusuke Jyouno, Masataka Kato, Katsutaka Kimura:
High reliability electron-ejection method for high density flash memories. IEEE J. Solid State Circuits 30(12): 1554-1562 (1995)
1980 – 1989
- 1989
- [j3]Goro Kitsukawa, Kiyoo Itoh, Ryoichi Hori, Yoshiki Kawajiri, Takao Watanabe, Takayuki Kawahara, Tetsuro Matsumoto, Yutaka Kobayashi:
A 1-Mbit BiCMOS DRAM using temperature-compensation circuit techniques. IEEE J. Solid State Circuits 24(3): 597-602 (1989) - [j2]Takao Watanabe, Goro Kitsukawa, Yoshiki Kawajiri, Kiyoo Itoh, Ryoichi Hori, Yoshiaki Ouchi, Takayuki Kawahara, Tetsuro Matsumoto:
Comparison of CMOS and BiCMOS 1-Mbit DRAM performance. IEEE J. Solid State Circuits 24(3): 771-778 (1989) - [j1]Takayuki Kawahara, Goro Kitsukawa, Hisayuki Higuchi, Yoshiki Kawajiri, Takao Watanabe, Kiyoo Itoh, Ryoichi Hori, Yutaka Kobayashi, Tetsuro Matsumoto:
Substrate current reduction techniques for BiCMOS DRAM. IEEE J. Solid State Circuits 24(5): 1381-1389 (1989)
Coauthor Index
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