Toru NAKURA


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)

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)

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 (887.6KB)

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)

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 (634.9KB)

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 (841.3KB)

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 (674.6KB)

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 (706.1KB)

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 (557.2KB)

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 (407.4KB)

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: 2000/03/20
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)