Toru NAKURA


Triangular Active Charge Injection Method for Resonant Power Supply Noise Reduction
Masahiro KANO Toru NAKURA Tetsuya IIZUKA Kunihiro ASADA 
Publication:   
Publication Date: 2018/04/01
Vol. E101-C  No. 4  pp. 292-298
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
signal integrityresonant power supply noisetriangular active charge injectionDLLvernier TDC
 Summary | Full Text:PDF(1.8MB)

Quick-Start Pulse Width Controlled PLL with Frequency and Phase Presetting
Toru NAKURA Tsukasa KAGAYA Tetsuya IIZUKA Kunihiro ASADA 
Publication:   
Publication Date: 2018/04/01
Vol. E101-C  No. 4  pp. 218-223
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design — Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
quick start PLLphase and frequency presetting
 Summary | Full Text:PDF(1.3MB)

Optimal Design Method of Sub-Ranging ADC Based on Stochastic Comparator
Md. Maruf HOSSAIN Tetsuya IIZUKA Toru NAKURA Kunihiro ASADA 
Publication:   
Publication Date: 2018/02/01
Vol. E101-A  No. 2  pp. 410-424
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
sub-ranging ADCstochastic comparatoryieldprobability density functionoptimizationcalibration
 Summary | Full Text:PDF(3.8MB)

A PLL Compiler from Specification to GDSII
Toru NAKURA Tetsuya IIZUKA Kunihiro ASADA 
Publication:   
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 2741-2749
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
PLL compilerPLL synthesisPWPLLspecification to GDSII
 Summary | Full Text:PDF(2.1MB)

A Gate Delay Mismatch Tolerant Time-Mode Analog Accumulator Using a Delay Line Ring
Tomohiko YANO Toru NAKURA Tetsuya IIZUKA Kunihiro ASADA 
Publication:   
Publication Date: 2017/09/01
Vol. E100-C  No. 9  pp. 736-745
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
time-mode circuitanalog front endintegratoraccumulatortime domaincalibration free
 Summary | Full Text:PDF(1.4MB)

Design, Analysis and Implementation of Pulse Generator by CMOS Flipped on Glass for Low Power UWB-IR
Parit KANJANAVIROJKUL Nguyen NGOC MAI-KHANH Tetsuya IIZUKA Toru NAKURA Kunihiro ASADA 
Publication:   
Publication Date: 2017/01/01
Vol. E100-A  No. 1  pp. 200-209
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
pulse generationUWB-IRCMOSlow duty cycleenergy efficiencyflip-chip devices
 Summary | Full Text:PDF(4MB)

Power Supply Voltage Control for Eliminating Overkills and Underkills in Delay Fault Testing
Masahiro ISHIDA Toru NAKURA Takashi KUSAKA Satoshi KOMATSU Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/10/01
Vol. E99-C  No. 10  pp. 1219-1225
Type of Manuscript:  PAPER
Category: Semiconductor Materials and Devices
Keyword: 
power integritypower supply voltage controloverkills and underkillsdelay fault testingautomatic test equipment
 Summary | Full Text:PDF(1.4MB)

An On-Chip Measurement of PLL Transfer Function and Lock Range through Fully Digital Interface
Toshiyuki KIKKAWA Toru NAKURA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/02/01
Vol. E99-C  No. 2  pp. 275-284
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
PLLtransfer functionlock rangeon-chip measurement
 Summary | Full Text:PDF(1.1MB)

Resonant Power Supply Noise Reduction by STO Capacitors Fabricated on Interposer
Toru NAKURA Masahiro KANO Masamitsu YOSHIZAWA Atsunori HATTORI Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/07/01
Vol. E98-C  No. 7  pp. 734-740
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
resonant power supply noisepower integrityembedded capacitorSTO capacitor
 Summary | Full Text:PDF(2.2MB)

On-Chip Switched Decoupling Capacitor for Fast Voltage Hopping of DVS Systems
Jinmyoung KIM Toru NAKURA Koichiro ISHIBASHI Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/04/01
Vol. E96-C  No. 4  pp. 560-567
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design—Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
DVSfast voltage hoppingresonant supply noisedecoupling capacitornoise reductioncapacitance boosting
 Summary | Full Text:PDF(2.3MB)

Frequency Resolution Enhancement for Digitally-Controlled Oscillator Based on a Single-Period Switching Scheme
Kazutoshi KODAMA Tetsuya IIZUKA Toru NAKURA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/12/01
Vol. E95-C  No. 12  pp. 1857-1863
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
DCOADPLLhigh frequency resolution enhancement
 Summary | Full Text:PDF(2.1MB)

On-Chip Switched Parasitic Capacitors of Sleep Blocks for Resonant Supply Noise Reduction
Jinmyoung KIM Toru NAKURA Hidehiro TAKATA Koichiro ISHIBASHI Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/04/01
Vol. E95-C  No. 4  pp. 643-650
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design – Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
resonant supply noiseswitched parasitic capacitorssleep blockpower gating
 Summary | Full Text:PDF(2.3MB)

Low Pass Filter-Less Pulse Width Controlled PLL Using Time to Soft Thermometer Code Converter
Toru NAKURA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/02/01
Vol. E95-C  No. 2  pp. 297-302
Type of Manuscript:  PAPER
Category: Integrated Electronics
Keyword: 
PLLPWCOpulse width controlsoft thermometer codeLPF-lessquantization noise free
 Summary | Full Text:PDF(1.3MB)

1.0 ps Resolution Time-to-Digital Converter Based-On Cascaded Time-Difference-Amplifier Utilizing Differential Logic Delay Cells
Shingo MANDAI Tetsuya IIZUKA Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/06/01
Vol. E94-C  No. 6  pp. 1098-1104
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
time-to-digital converterTDCtime-difference-amplifierTDAtime amp
 Summary | Full Text:PDF(1.3MB)

Cascaded Time Difference Amplifier with Differential Logic Delay Cell
Shingo MANDAI Toru NAKURA Tetsuya IIZUKA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/04/01
Vol. E94-C  No. 4  pp. 654-662
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
time-difference-amplifierTDAtime amp
 Summary | Full Text:PDF(888.9KB)

All-Digital On-Chip Monitor for PMOS and NMOS Process Variability Utilizing Buffer Ring with Pulse Counter
Tetsuya IIZUKA Jaehyun JEONG Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/04/01
Vol. E94-C  No. 4  pp. 487-494
Type of Manuscript:  Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
process variabilityall digitalon-chip monitorbuffer ringNBTIPBTI
 Summary | Full Text:PDF(1.1MB)

On-Chip Resonant Supply Noise Canceller Utilizing Parasitic Capacitance of Sleep Blocks for Power Mode Switch
Jinmyoung KIM Toru NAKURA Hidehiro TAKATA Koichiro ISHIBASHI Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/04/01
Vol. E94-C  No. 4  pp. 511-519
Type of Manuscript:  Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
power supply noiseresonanceparasitic capacitancesleep blockDVSpower gating
 Summary | Full Text:PDF(1.7MB)

A Low Power and High Throughput Self Synchronous FPGA Using 65 nm CMOS with Throughput Optimization by Pipeline Alignment
Benjamin STEFAN DEVLIN Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/07/01
Vol. E93-A  No. 7  pp. 1319-1328
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
self synchronousfpgapipeline alignmentlow powerhigh throughputdynamic logicdual pipeline
 Summary | Full Text:PDF(6.3MB)

Time Difference Amplifier with Robust Gain Using Closed-Loop Control
Toru NAKURA Shingo MANDAI Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/03/01
Vol. E93-C  No. 3  pp. 303-308
Type of Manuscript:  Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
time difference amplifierTDAtime to digital converterTDCvoltage controlled delay line
 Summary | Full Text:PDF(636.1KB)

Dual Imager Core Chip with 24.8 Rangemaps/s 3-D and 58 fps 2-D Simultaneous Capture Capability
Shingo MANDAI Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/06/01
Vol. E92-C  No. 6  pp. 798-805
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
image sensorlight-section methodstereo-matchingdual imager coremulti functional range finder
 Summary | Full Text:PDF(1.5MB)

Autonomous di/dt Control of Power Supply for Margin Aware Operation
Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/11/01
Vol. E89-C  No. 11  pp. 1689-1694
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
autonomous di/dt controlmargin awaredi/dt detectorpower supply current
 Summary | Full Text:PDF(840.6KB)

Feedforward Active Substrate Noise Cancelling Based on di/dt of Power Supply
Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/03/01
Vol. E89-C  No. 3  pp. 364-369
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design Technology in the Sub-100 nm Era)
Category: Signal Integrity and Variability
Keyword: 
substrate noisedi/dtfeedforward active cancellinganti-phaseground bouncedi/dt detector
 Summary | Full Text:PDF(673.2KB)

Preliminary Experiments for Power Supply Noise Reduction Using On-Board Stubs
Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1734-1739
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from AP-ASIC 2004)
Category: 
Keyword: 
stubon-boardpower supply noisedi/dt noisePRBS pattern
 Summary | Full Text:PDF(704.7KB)

On-Chip di/dt Detector Circuit
Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/05/01
Vol. E88-C  No. 5  pp. 782-787
Type of Manuscript:  Special Section PAPER (Special Section on Microelectronic Test Structures)
Category: 
Keyword: 
di/dt detectormutual inductorspiral inductorparasitic inductancepower supply noise
 Summary | Full Text:PDF(555.8KB)

Stub vs. Capacitor for Power Supply Noise Reduction
Toru NAKURA Makoto IKEDA Kunihiro ASADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/01/01
Vol. E88-C  No. 1  pp. 125-132
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
stubdecoupling capacitorpower supply noisedi/dt noiseIR drop
 Summary | Full Text:PDF(407.7KB)

LAPAREX-An Automatic Parameter Extraction Program for Gain- and Index-Coupled Distributed Feedback Semiconductor Lasers, and Its Application to Observation of Changing Coupling Coefficients with Currents
Toru NAKURA Yoshiaki NAKANO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/03/25
Vol. E83-C  No. 3  pp. 488-495
Type of Manuscript:  PAPER
Category: Lasers, Quantum Electronics
Keyword: 
distributed feedback semiconductor lasersDFB lasersparameter extractioncoupling coefficientgain coupling
 Summary | Full Text:PDF(1.4MB)