Hiroyuki OCHI


Parallel Acceleration Scheme for Monte Carlo Based SSTA Using Generalized STA Processing Element
Hiroshi YUASA  Hiroshi TSUTSUI  Hiroyuki OCHI  Takashi SATO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/04/01
Vol. E96-C  No. 4  pp. 473-481
Type of Manuscript: Special Section PAPER (Special Section on Solid-State Circuit Design—Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
statistical static timing analysisdelay distributionslew ratefield-programmable gate arrayMersenne Twister
  Summary |  Full Text:PDF (1.3MB)

A Cost-Effective Selective TMR for Coarse-Grained Reconfigurable Architectures Based on DFG-Level Vulnerability Analysis
Takashi IMAGAWA  Hiroshi TSUTSUI  Hiroyuki OCHI  Takashi SATO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/04/01
Vol. E96-C  No. 4  pp. 454-462
Type of Manuscript: Special Section PAPER (Special Section on Solid-State Circuit Design—Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
soft errorsingle event upsettriple modular redundancyreliabilitysimulated annealing
  Summary |  Full Text:PDF (1.4MB)

Bayesian Estimation of Multi-Trap RTN Parameters Using Markov Chain Monte Carlo Method
Hiromitsu AWANO  Hiroshi TSUTSUI  Hiroyuki OCHI  Takashi SATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/12/01
Vol. E95-A  No. 12  pp. 2272-2283
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Device and Circuit Modeling and Analysis
Keyword: 
random telegraph noiseBayesian estimationMarkov chain Monte Carlodevice characterizationsource separationstatistical machine learning
  Summary |  Full Text:PDF (3.3MB)

A Variability-Aware Energy-Minimization Strategy for Subthreshold Circuits
Junya KAWASHIMA  Hiroshi TSUTSUI  Hiroyuki OCHI  Takashi SATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/12/01
Vol. E95-A  No. 12  pp. 2242-2250
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Device and Circuit Modeling and Analysis
Keyword: 
subthreshold operationprocess variationminimum operation voltage estimationenergy minimizationyield maximization
  Summary |  Full Text:PDF (837.7KB)

Reliability Evaluation Environment for Exploring Design Space of Coarse-Grained Reconfigurable Architectures
Takashi IMAGAWA  Masayuki HIROMOTO  Hiroyuki OCHI  Takashi SATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/12/01
Vol. E93-A  No. 12  pp. 2524-2532
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High-Level Synthesis and System-Level Design
Keyword: 
soft errorTMRreliabilitymethodology
  Summary |  Full Text:PDF (651.9KB)

Hardware Accelerator for Run-Time Learning Adopted in Object Recognition with Cascade Particle Filter
Hiroki SUGANO  Hiroyuki OCHI  Yukihiro NAKAMURA  Ryusuke MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/11/01
Vol. E92-A  No. 11  pp. 2801-2808
Type of Manuscript: Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Image Processing
Keyword: 
Cascade Particle Filterhardware acceleratorembedded systemsreal-time processing
  Summary |  Full Text:PDF (689.7KB)

Efficient Memory Organization Framework for JPEG2000 Entropy Codec
Hiroki SUGANO  Takahiko MASUZAKI  Hiroshi TSUTSUI  Takao ONOYE  Hiroyuki OCHI  Yukihiro NAKAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/08/01
Vol. E92-A  No. 8  pp. 1970-1977
Type of Manuscript: Special Section PAPER (Special Section on Signal Processing)
Category: Realization
Keyword: 
JPEG2000entropy codechardwarememory organization
  Summary |  Full Text:PDF (597.3KB)

Autonomous Repair Fault Tolerant Dynamic Reconfigurable Device
Kentaro NAKAHARA  Shin'ichi KOUYAMA  Tomonori IZUMI  Hiroyuki OCHI  Yukihiro NAKAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/12/01
Vol. E91-A  No. 12  pp. 3612-3621
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Embedded, Real-Time and Reconfigurable Systems
Keyword: 
fault tolerancedependableFPGAreconfigurable devicesoft error
  Summary |  Full Text:PDF (631.9KB)

A Simulation Platform for Designing Cell-Array-Based Self-Reconfigurable Architecture
Shin'ichi KOUYAMA  Tomonori IZUMI  Hiroyuki OCHI  Yukihiro NAKAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/04/01
Vol. E90-A  No. 4  pp. 784-791
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 19th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
self-reconfigurationevaluation of architecturemodel of architecturesimulation
  Summary |  Full Text:PDF (621.9KB)

Fault Tolerant Dynamic Reconfigurable Device Based on EDAC with Rollback
Kentaro NAKAHARA  Shin'ichi KOUYAMA  Tomonori IZUMI  Hiroyuki OCHI  Yukihiro NAKAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/12/01
Vol. E89-A  No. 12  pp. 3652-3658
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: VLSI Architecture
Keyword: 
fault tolerancedependabledynamic reconfigurable
  Summary |  Full Text:PDF (425.4KB)

A Localization Scheme for Sensor Networks Based on Wireless Communication with Anchor Groups
Hiroyuki OCHI  Shigeaki TAGASHIRA  Satoshi FUJITA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/05/01
Vol. E89-D  No. 5  pp. 1614-1621
Type of Manuscript: Special Section PAPER (Special Section on Challenges in Ad-hoc and Multi-hop Wireless Communications)
Category: 
Keyword: 
sensor networkslocalizationrange-freenesspoint-in-triangulation testBluetooth
  Summary |  Full Text:PDF (263.2KB)

An Integrated Approach of Variable Ordering and Logic Mapping into LUT-Array-Based PLD
Tomonori IZUMI  Shin'ichi KOUYAMA  Hiroyuki OCHI  Yukihiro NAKAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/04/01
Vol. E88-A  No. 4  pp. 907-914
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 17th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
reconfigurable systemdesign technologylogic synthesisvariable orderinglook-up table
  Summary |  Full Text:PDF (2.1MB)

Development of an IP Library of IEEE-754-Standard Single-Precision Floating-Point Dividers
Hiroyuki OCHI  Tatsuya SUZUKI  Sayaka MATSUNAGA  Yoichi KAWANO  Takao TSUDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/12/01
Vol. E86-A  No. 12  pp. 3020-3027
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: IP Design
Keyword: 
SRT methodrestoring methodperformance-area ratioperformance-power ratio
  Summary |  Full Text:PDF (560.5KB)

Datapath-Layout-Driven Design for Low-Power Standard-Cell LSI Implementation
Takahiro KAKIMOTO  Hiroyuki OCHI  Takao TSUDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/12/01
Vol. E85-A  No. 12  pp. 2795-2798
Type of Manuscript: Special Section LETTER (Special Section on VLSI Design and CAD Algorithms)
Category: VLSI Design
Keyword: 
low power designwire lengthfloorplanbit sliceone-hot code
  Summary |  Full Text:PDF (257.3KB)

An Algorithm for Generating Generic BDDs
Tetsushi KATAYAMA  Hiroyuki OCHI  Takao TSUDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/12/20
Vol. E83-A  No. 12  pp. 2505-2512
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Logic Synthesis
Keyword: 
combinational synthesislogic functionswitching theorybinary decision diagrampass-transistor logic
  Summary |  Full Text:PDF (635.2KB)

ASAver.1: An FPGA-Based Education Board for Computer Architecture/System Design
Hiroyuki OCHI  Yoko KAMIDOI  Hideyuki KAWABATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/10/20
Vol. E80-A  No. 10  pp. 1826-1833
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
education of computer architecturesystem designDLX-like pipelined RISC processorfield-programmable gate arrayverilog-HDL
  Summary |  Full Text:PDF (1021.7KB)

An Exact Minimization of AND-EXOR Expressions Using Encoded MRCF
Hiroyuki OCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/12/20
Vol. E79-A  No. 12  pp. 2131-2133
Type of Manuscript: Special Section LETTER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
logic cptimizationexact minimization of AND-EXOR expressionsHelliwell equationO-suppressed binary decision diagrams
  Summary |  Full Text:PDF (240.6KB)

A Zero-Suppressed BDD Package with Pruning and Its Application to GRM Minimization
Hiroyuki OCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/12/20
Vol. E79-A  No. 12  pp. 2134-2139
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
zero-suppressed binary decision diagram (ZBDD)implementation of BDD packageAND-EXOR logic minimizationgeneralized Reed-Muller expression
  Summary |  Full Text:PDF (492.5KB)

Formal Design Verification of Combinational Circuits Specified by Recurrence Equations
Hiroyuki OCHI  Shuzo YAJIMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/10/20
Vol. E79-D  No. 10  pp. 1431-1435
Type of Manuscript: Special Section PAPER (Special Issue on Synthesis and Verification of Hardware Design)
Category: Design Verification
Keyword: 
formal design verificationbinary decision diagramarithmetic circuitsspecificationrecurrence equations
  Summary |  Full Text:PDF (403.4KB)