Shintaro IZUMI


Non-Contact Instantaneous Heart Rate Extraction System Using 24-GHz Microwave Doppler Sensor
Shintaro IZUMI Takaaki OKANO Daichi MATSUNAGA Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   
Publication Date: 2019/06/01
Vol. E102-B  No. 6  pp. 1088-1096
Type of Manuscript:  Special Section PAPER (Special Section on Healthcare, Medical Information and Communication Technology for Safe and Secure Society)
Category: 
Keyword: 
Burg's methodheart rate variabilityinstantaneous heart rate (IHR)microwave Doppler sensornon-contact
 Summary | Full Text:PDF

Recent Progress of Biomedical Processor SoC for Wearable Healthcare Application: A Review
Masahiko YOSHIMOTO Shintaro IZUMI 
Publication:   
Publication Date: 2019/04/01
Vol. E102-C  No. 4  pp. 245-259
Type of Manuscript:  INVITED PAPER (Special Section on Solid-State Circuit Design — Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
healthcarelow-powerSoCwearable
 Summary | Full Text:PDF

A 11.3-µA Physical Activity Monitoring System Using Acceleration and Heart Rate
Motofumi NAKANISHI Shintaro IZUMI Mio TSUKAHARA Hiroshi KAWAGUCHI Hiromitsu KIMURA Kyoji MARUMOTO Takaaki FUCHIKAMI Yoshikazu FUJIMORI Masahiko YOSHIMOTO 
Publication:   
Publication Date: 2018/04/01
Vol. E101-C  No. 4  pp. 233-242
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design — Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
adaptive samplingnormally off computingphysical activity classificationsensor fusionSoC
 Summary | Full Text:PDF

A 28-nm 484-fJ/writecycle 650-fJ/readcycle 8T Three-Port FD-SOI SRAM for Image Processor
Haruki MORI Yohei UMEKI Shusuke YOSHIMOTO Shintaro IZUMI Koji NII Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/08/01
Vol. E99-C  No. 8  pp. 901-908
Type of Manuscript:  Special Section PAPER (Special Section on Low-Power and High-Speed Chips)
Category: 
Keyword: 
image memorymulti-port SRAM8TFD-SOI28-nmmajority logic
 Summary | Full Text:PDF

Error Propagation Analysis for Single Event Upset considering Masking Effects on Re-Convergent Path
Go MATSUKAWA Yuta KIMI Shuhei YOSHIDA Shintaro IZUMI Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/06/01
Vol. E99-A  No. 6  pp. 1198-1205
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
single event effectsingle event upsetsoft error propagationlogical maskingtemporal masking
 Summary | Full Text:PDF

A Fast Settling All Digital PLL Using Temperature Compensated Oscillator Tuning Word Estimation Algorithm
Keisuke OKUNO Shintaro IZUMI Kana MASAKI Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/12/01
Vol. E98-A  No. 12  pp. 2592-2599
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Circuit Design
Keyword: 
ADPLLfast settlingdigital calibrationtiming error correctiontemperature compensation
 Summary | Full Text:PDF

Low-Jitter Design for Second-Order Time-to-Digital Converter Using Frequency Shift Oscillators
Keisuke OKUNO Toshihiro KONISHI Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/07/01
Vol. E98-A  No. 7  pp. 1475-1481
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
TDCFSOjitterdesign methodology
 Summary | Full Text:PDF

An I/O-Sized ADC with Second-Order TDC and MOM Capacitor Voltage-to-Time Converter
Keisuke OKUNO Toshihiro KONISHI Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/06/01
Vol. E98-C  No. 6  pp. 489-495
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
ADCI/O-sizeVTCMOM capacitance
 Summary | Full Text:PDF

Noise Tolerant Heart Rate Extraction Algorithm Using Short-Term Autocorrelation for Wearable Healthcare Systems
Shintaro IZUMI Masanao NAKANO Ken YAMASHITA Yozaburo NAKAI Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/05/01
Vol. E98-D  No. 5  pp. 1095-1103
Type of Manuscript:  PAPER
Category: Biological Engineering
Keyword: 
autocorrelationbiomedical signal processingelectrocardiographyheart rate extractionnoise tolerance
 Summary | Full Text:PDF

STT-MRAM Operating at 0.38V Using Negative-Resistance Sense Amplifier
Yohei UMEKI Koji YANAGIDA Shusuke YOSHIMOTO Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI Koji TSUNODA Toshihiro SUGII 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/12/01
Vol. E97-A  No. 12  pp. 2411-2417
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Circuit Design
Keyword: 
STT-MRAMlow-voltageprocess-variation-tolerant
 Summary | Full Text:PDF

A Second-Order All-Digital TDC with Low-Jitter Frequency Shift Oscillators and Dynamic Flipflops
Toshihiro KONISHI Keisuke OKUNO Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/04/01
Vol. E96-C  No. 4  pp. 546-552
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design—Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
ADCTDCoscillatordigital circuitadaptive LMS filtering
 Summary | Full Text:PDF

A 168-mW 2.4-Real-Time 60-kWord Continuous Speech Recognition Processor VLSI
Guangji HE Takanobu SUGAHARA Yuki MIYAMOTO Shintaro IZUMI Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/04/01
Vol. E96-C  No. 4  pp. 444-453
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design—Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
40 nm VLSIhidden Markov model (HMM)large vocabulary continuous recognition (LVCSR)
 Summary | Full Text:PDF

A Sub-100 mW Dual-Core HOG Accelerator VLSI for Parallel Feature Extraction Processing for HDTV Resolution Video
Kosuke MIZUNO Kenta TAKAGI Yosuke TERACHI Shintaro IZUMI Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/04/01
Vol. E96-C  No. 4  pp. 433-443
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design—Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
HOGobject detectionlow-powerHDTV
 Summary | Full Text:PDF

An Opampless Second-Order MASH ΔΣ ADC with Using Gated Ring Oscillator Time-to-Digital Converter
Toshihiro KONISHI Keisuke OKUNO Shintaro IZUMI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/02/01
Vol. E96-A  No. 2  pp. 434-442
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
ADCTDCoscillatornoise-shapinglow-powersmall areaprocess scalable
 Summary | Full Text:PDF

Divided Static Random Access Memory for Data Aggregation in Wireless Sensor Nodes
Takashi MATSUDA Shintaro IZUMI Yasuharu SAKAI Takashi TAKEUCHI Hidehiro FUJIWARA Hiroshi KAWAGUCHI Chikara OHTA Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/01/01
Vol. E95-B  No. 1  pp. 178-188
Type of Manuscript:  PAPER
Category: Network
Keyword: 
wireless sensor networkdata aggregationdata storage managementSRAM
 Summary | Full Text:PDF

A Low-Power Multi-Phase Oscillator with Transfer Gate Phase Coupler Enabling Even-Numbered Phase Output
Toshihiro KONISHI Hyeokjong LEE Shintaro IZUMI Takashi TAKEUCHI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/12/01
Vol. E94-A  No. 12  pp. 2701-2708
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Circuit Design
Keyword: 
multi-phase oscillatortransfer gate phase couplereven-numbered phaseslow-powerprocess scalable
 Summary | Full Text:PDF

A Low-Power Multi Resolution Spectrum Sensing Architecture for a Wireless Sensor Network with Cognitive Radio
Toshihiro KONISHI Shintaro IZUMI Koh TSURUDA Hyeokjong LEE Takashi TAKEUCHI Masahiko YOSHIMOTO Hiroshi KAWAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/11/01
Vol. E94-A  No. 11  pp. 2287-2294
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Mobile Information Network and Personal Communications
Keyword: 
MRSSmulti-resolution spectrum sensingcognitive radiowireless sensor networklow power
 Summary | Full Text:PDF

A Low-Power Real-Time SIFT Descriptor Generation Engine for Full-HDTV Video Recognition
Kosuke MIZUNO Hiroki NOGUCHI Guangji HE Yosuke TERACHI Tetsuya KAMINO Tsuyoshi FUJINAGA Shintaro IZUMI Yasuo ARIKI Hiroshi KAWAGUCHI Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/04/01
Vol. E94-C  No. 4  pp. 448-457
Type of Manuscript:  Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
SIFTimage recognitionlow-powerHDTV
 Summary | Full Text:PDF

A 58-µW Single-Chip Sensor Node Processor with Communication Centric Design
Shintaro IZUMI Takashi TAKEUCHI Takashi MATSUDA Hyeokjong LEE Toshihiro KONISHI Koh TSURUDA Yasuharu SAKAI Hiroshi KAWAGUCHI Chikara OHTA Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/03/01
Vol. E93-C  No. 3  pp. 261-269
Type of Manuscript:  Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
cross-layer designsensor networkssensor nodeMAC protocoltime synchronizationlow power
 Summary | Full Text:PDF

Counter-Based Broadcasting with Hop Count Aware Random Assessment Delay Extension for Wireless Sensor Networks
Shintaro IZUMI Takashi TAKEUCHI Takashi MATSUDA Hiroshi KAWAGUCHI Chikara OHTA Masahiko YOSHIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/11/01
Vol. E91-B  No. 11  pp. 3489-3498
Type of Manuscript:  Special Section PAPER (Special Section on Emerging Technologies for Practical Ubiquitous and Sensor Networks)
Category: 
Keyword: 
sensor networkbroadcastfloodingcounter-based scheme
 Summary | Full Text:PDF