Nozomu TOGAWA


A Safe and Comprehensive Route Finding Algorithm for Pedestrians Based on Lighting and Landmark Conditions
Siya BAO Tomoyuki NITTA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   
Publication Date: 2017/11/01
Vol. E100-A  No. 11  pp. 2439-2450
Type of Manuscript:  PAPER
Category: Intelligent Transport System
Keyword: 
pedestrianlightinglandmarkroad widthturning pointanxietysafetycomprehensiveness
 Summary | Full Text:PDF(4.1MB)

A Floorplan Aware High-Level Synthesis Algorithm with Body Biasing for Delay Variation Compensation
Koki IGAWA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   
Publication Date: 2017/07/01
Vol. E100-A  No. 7  pp. 1439-1451
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
high-level synthesisdelay variationbody biasinginterconnection delayfloorplan
 Summary | Full Text:PDF(1.3MB)

A Hardware-Trojan Classification Method Using Machine Learning at Gate-Level Netlists Based on Trojan Features
Kento HASEGAWA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   
Publication Date: 2017/07/01
Vol. E100-A  No. 7  pp. 1427-1438
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
hardware Trojangate-level netlistmachine learningsupport vector machine (SVM)neural network (NN)
 Summary | Full Text:PDF(1MB)

Efficient Multiplexer Networks for Field-Data Extractors and Their Evaluations
Koki ITO Kazushi KAWAMURA Yutaka TAMIYA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   
Publication Date: 2017/04/01
Vol. E100-A  No. 4  pp. 1015-1028
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
field-data extractormultiplexer networkpartitioningrotator
 Summary | Full Text:PDF(1.7MB)

Hardware-Trojans Rank: Quantitative Evaluation of Security Threats at Gate-Level Netlists by Pattern Matching
Masaru OYA Noritaka YAMASHITA Toshihiko OKAMURA Yukiyasu TSUNOO Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2335-2347
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
hardware Trojansgate-level netlista quantitative criterionpattern matchingdesign phase
 Summary | Full Text:PDF(1.8MB)

A Bit-Write-Reducing and Error-Correcting Code Generation Method by Clustering ECC Codewords for Non-Volatile Memories
Tatsuro KOJO Masashi TAWADA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2398-2411
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
non-volatile memorybit-write-reducingerror-correcting codesclustering conditionsS-bit flip conditionsS-bound graphcluster graphREC code
 Summary | Full Text:PDF(1.6MB)

A Highly-Adaptable and Small-Sized In-Field Power Analyzer for Low-Power IoT Devices
Ryosuke KITAYAMA Takashi TAKENAKA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2348-2362
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
IoTpower analyzernoise reductionsignal-averaging methodscalable measurement
 Summary | Full Text:PDF(2.6MB)

Interconnection-Delay and Clock-Skew Estimate Modelings for Floorplan-Driven High-Level Synthesis Targeting FPGA Designs
Koichi FUJIWARA Kazushi KAWAMURA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/07/01
Vol. E99-A  No. 7  pp. 1294-1310
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
interconnection delayclock skewhigh-level synthesis (HLS)FPGAfloorplan
 Summary | Full Text:PDF(2MB)

Bi-Partitioning Based Multiplexer Network for Field-Data Extractors
Koki ITO Kazushi KAWAMURA Yutaka TAMIYA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/07/01
Vol. E99-A  No. 7  pp. 1410-1414
Type of Manuscript:  Special Section LETTER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
multiplexer networkpartitioningfield-data extractor
 Summary | Full Text:PDF(234KB)

A Multi-Scenario High-Level Synthesis Algorithm for Variation-Tolerant Floorplan-Driven Design
Koki IGAWA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/07/01
Vol. E99-A  No. 7  pp. 1278-1293
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
high-level synthesisprocess variationinterconnection delaydistributed-register architecturescenario
 Summary | Full Text:PDF(2.4MB)

ECC-Based Bit-Write Reduction Code Generation for Non-Volatile Memory
Masashi TAWADA Shinji KIMURA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/12/01
Vol. E98-A  No. 12  pp. 2494-2504
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High-Level Synthesis and System-Level Design
Keyword: 
non-volatile memorybit-write reductionenergy reductionwrite-reduction codeerror-correcting code
 Summary | Full Text:PDF(1.5MB)

Scan-Based Side-Channel Attack on the Camellia Block Cipher Using Scan Signatures
Huiqian JIANG Mika FUJISHIRO Hirokazu KODERA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/12/01
Vol. E98-A  No. 12  pp. 2547-2555
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Logic Synthesis, Test and Verification
Keyword: 
Camelliaside-channel attackscan-based attackdesign-for-testscan chainscan signature
 Summary | Full Text:PDF(3.1MB)

A Hardware-Trojans Identifying Method Based on Trojan Net Scoring at Gate-Level Netlists
Masaru OYA Youhua SHI Noritaka YAMASHITA Toshihiko OKAMURA Yukiyasu TSUNOO Satoshi GOTO Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/12/01
Vol. E98-A  No. 12  pp. 2537-2546
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Logic Synthesis, Test and Verification
Keyword: 
hardware Trojansgolden-IC freeclassificationidentificationgate-level netlist
 Summary | Full Text:PDF(2.3MB)

Code Generation Limiting Maximum and Minimum Hamming Distances for Non-Volatile Memories
Tatsuro KOJO Masashi TAWADA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/12/01
Vol. E98-A  No. 12  pp. 2484-2493
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High-Level Synthesis and System-Level Design
Keyword: 
non-volatile memorymaximum-writing bitserror-correcting codesDoughnut codecode expansion
 Summary | Full Text:PDF(1.6MB)

An Energy-Efficient Floorplan Driven High-Level Synthesis Algorithm for Multiple Clock Domains Design
Shin-ya ABE Youhua SHI Kimiyoshi USAMI Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/07/01
Vol. E98-A  No. 7  pp. 1376-1391
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
high-level synthesisenergy-optimizationinterconnection delaymultiple clock domains
 Summary | Full Text:PDF(2.2MB)

An Effective Suspicious Timing-Error Prediction Circuit Insertion Algorithm Minimizing Area Overhead
Shinnosuke YOSHIDA Youhua SHI Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/07/01
Vol. E98-A  No. 7  pp. 1406-1418
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
timing-error predictionrobust designdelay variationoverclocking
 Summary | Full Text:PDF(2.5MB)

A Floorplan-Driven High-Level Synthesis Algorithm for Multiplexer Reduction Targeting FPGA Designs
Koichi FUJIWARA Kazushi KAWAMURA Shin-ya ABE Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/07/01
Vol. E98-A  No. 7  pp. 1392-1405
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
high-level synthesis (HLS)FPGAfloorplaninterconnection delayMUX
 Summary | Full Text:PDF(3.4MB)

A High-Level Synthesis Algorithm with Inter-Island Distance Based Operation Chainings for RDR Architectures
Kotaro TERADA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/07/01
Vol. E98-A  No. 7  pp. 1366-1375
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
high-level synthesisRDR architectureinterconnection delayoperation chainingfloorplan
 Summary | Full Text:PDF(1.3MB)

Scan-Based Side-Channel Attack on the LED Block Cipher Using Scan Signatures
Mika FUJISHIRO Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/12/01
Vol. E97-A  No. 12  pp. 2434-2442
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Logic Synthesis, Test and Verification
Keyword: 
LEDlight encryption deviceside-channel attacksscan chainscan-based attack
 Summary | Full Text:PDF(1.9MB)

Scan-Based Attack against Trivium Stream Cipher Using Scan Signatures
Mika FUJISHIRO Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/07/01
Vol. E97-A  No. 7  pp. 1444-1451
Type of Manuscript:  Special Section PAPER (Special Section on Design Methodologies for System on a Chip)
Category: 
Keyword: 
Triviumside-channel attacksscan chainscan-based attack
 Summary | Full Text:PDF(1.4MB)

Floorplan Driven Architecture and High-Level Synthesis Algorithm for Dynamic Multiple Supply Voltages
Shin-ya ABE Youhua SHI Kimiyoshi USAMI Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/12/01
Vol. E96-A  No. 12  pp. 2597-2611
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High-Level Synthesis and System-Level Design
Keyword: 
high-level synthesisinterconnection delayenergy-optimizationdynamic multiple supply voltages
 Summary | Full Text:PDF(2.1MB)

A High-Speed Trace-Driven Cache Configuration Simulator for Dual-Core Processor L1 Caches
Masashi TAWADA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/06/01
Vol. E96-A  No. 6  pp. 1283-1292
Type of Manuscript:  Special Section PAPER (Special Section on Circuit, System, and Computer Technologies)
Category: 
Keyword: 
cache simulationoptimaize cache memorymulticore cache
 Summary | Full Text:PDF(1.4MB)

A Thermal-Aware High-Level Synthesis Algorithm for RDR Architectures through Binding and Allocation
Kazushi KAWAMURA Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/01/01
Vol. E96-A  No. 1  pp. 312-321
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
high-level synthesisRDRthermal-awarehot spotsinterconnect delays
 Summary | Full Text:PDF(1.5MB)

Scan-Based Attack on AES through Round Registers and Its Countermeasure
Youhua SHI Nozomu TOGAWA Masao YANAGISAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/12/01
Vol. E95-A  No. 12  pp. 2338-2346
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High-Level Synthesis and System-Level Design
Keyword: 
scan-based side channel attackcrypto implementationsecuritytestability
 Summary | Full Text:PDF(2MB)

A Locality-Aware Hybrid NoC Configuration Algorithm Utilizing the Communication Volume among IP Cores
Seungju LEE Masao YANAGISAWA Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/09/01
Vol. E95-A  No. 9  pp. 1538-1549
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
network-on-chip (NoC)hybrid NoC algorithmhierarchical NoCbusmesh NoC (BMNoC)
 Summary | Full Text:PDF(1.6MB)

Greedy Algorithm for the On-Chip Decoupling Capacitance Optimization to Satisfy the Voltage Drop Constraint
Mikiko SODE TANAKA Nozomu TOGAWA Masao YANAGISAWA Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/12/01
Vol. E94-A  No. 12  pp. 2482-2489
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Physical Level Design
Keyword: 
power supply noisepower distribution networksignal integritycircuit simulation
 Summary | Full Text:PDF(710.1KB)

Greedy Optimization Algorithm for the Power/Ground Network Design to Satisfy the Voltage Drop Constraint
Mikiko SODE TANAKA Nozomu TOGAWA Masao YANAGISAWA Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/04/01
Vol. E94-A  No. 4  pp. 1082-1090
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
power supply noisepower distribution networkssignal integritycircuit simulation
 Summary | Full Text:PDF(641.4KB)

Scan-Based Side-Channel Attack against RSA Cryptosystems Using Scan Signatures
Ryuta NARA Kei SATOH Masao YANAGISAWA Tatsuo OHTSUKI Nozomu TOGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/12/01
Vol. E93-A  No. 12  pp. 2481-2489
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Logic Synthesis, Test and Verification
Keyword: 
scan-based side-channel attackscan pathtestabilitycryptosystemRSAsecurity
 Summary | Full Text:PDF(1.2MB)

Floorplan-Aware High-Level Synthesis for Generalized Distributed-Register Architectures
Akira OHCHI Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3169-3179
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High-Level Synthesis and System-Level Design
Keyword: 
high-level synthesisfloorplandistributed-register architecturegeneralized distributed-register architecturelocal registerlocal controller
 Summary | Full Text:PDF(825.7KB)

A Two-Level Cache Design Space Exploration System for Embedded Applications
Nobuaki TOJO Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3238-3247
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Embedded, Real-Time and Reconfigurable Systems
Keyword: 
two-level cacheL1/L2cache optimizationdesign space explorationcache simulationembedded system
 Summary | Full Text:PDF(522.3KB)

A Scan-Based Attack Based on Discriminators for AES Cryptosystems
Ryuta NARA Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3229-3237
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Embedded, Real-Time and Reconfigurable Systems
Keyword: 
scan-based attackside-channel attackscan chaintestabilitysecuritycryptographyAES
 Summary | Full Text:PDF(1.2MB)

X-Handling for Current X-Tolerant Compactors with More Unknowns and Maximal Compaction
Youhua SHI Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3119-3127
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Logic Synthesis, Test and Verfication
Keyword: 
scan testtest data compressionX-masking
 Summary | Full Text:PDF(851.7KB)

Unified Dual-Radix Architecture for Scalable Montgomery Multiplications in GF(P) and GF(2n)
Kazuyuki TANIMURA Ryuta NARA Shunitsu KOHARA Youhua SHI Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/09/01
Vol. E92-A  No. 9  pp. 2304-2317
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
elliptic curve cryptographydual-radixmodular multiplicationMontgomery multiplicationscalabilityunified
 Summary | Full Text:PDF(1.6MB)

An L1 Cache Design Space Exploration System for Embedded Applications
Nobuaki TOJO Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/06/01
Vol. E92-A  No. 6  pp. 1442-1453
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
cachecache optimizationdesign space explorationcache simulationembedded system
 Summary | Full Text:PDF(1.1MB)

A Unified Test Compression Technique for Scan Stimulus and Unknown Masking Data with No Test Loss
Youhua SHI Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/12/01
Vol. E91-A  No. 12  pp. 3514-3523
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Logic Synthesis, Test and Verification
Keyword: 
scan testtest data compressionX-masking
 Summary | Full Text:PDF(583.3KB)

Low Power LDPC Code Decoder Architecture Based on Intermediate Message Compression Technique
Kazunori SHIMIZU Nozomu TOGAWA Takeshi IKENAGA Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/04/01
Vol. E91-A  No. 4  pp. 1054-1061
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
low-density parity-check codemessage-passing algorithmintermediate message compression techniqueclock gated shift register for intermediate message
 Summary | Full Text:PDF(451.3KB)

A Secure Test Technique for Pipelined Advanced Encryption Standard
Youhua SHI Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/03/01
Vol. E91-D  No. 3  pp. 776-780
Type of Manuscript:  Special Section LETTER (Special Section on Test and Verification of VLSIs)
Category: 
Keyword: 
scan testsecuritytest quality
 Summary | Full Text:PDF(145.8KB)

Power-Efficient LDPC Decoder Architecture Based on Accelerated Message-Passing Schedule
Kazunori SHIMIZU Tatsuyuki ISHIKAWA Nozomu TOGAWA Takeshi IKENAGA Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/12/01
Vol. E89-A  No. 12  pp. 3602-3612
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: VLSI Architecture
Keyword: 
low-density parity-check codesparallel LDPC decoder architecturemessage-passing algorithmFIFO-based buffering
 Summary | Full Text:PDF(1017.1KB)

Selective Low-Care Coding: A Means for Test Data Compression in Circuits with Multiple Scan Chains
Youhua SHI Nozomu TOGAWA Shinji KIMURA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 996-1004
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 18th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
test data compressiontest channelsscan test
 Summary | Full Text:PDF(445.2KB)

Partially-Parallel LDPC Decoder Achieving High-Efficiency Message-Passing Schedule
Kazunori SHIMIZU Tatsuyuki ISHIKAWA Nozomu TOGAWA Takeshi IKENAGA Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 969-978
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 18th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
low-density parity-check codespartially-parallel LDPC decodermessage-passing algorithmFPGA
 Summary | Full Text:PDF(748.2KB)

A Fast Elliptic Curve Cryptosystem LSI Embedding Word-Based Montgomery Multiplier
Jumpei UCHIDA Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/03/01
Vol. E89-C  No. 3  pp. 243-249
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design Technology in the Sub-100 nm Era)
Category: System LSIs and Microprocessors
Keyword: 
elliptic curve cryptosystemMontgmery multiplierpublic-key cryptosystemLSI design
 Summary | Full Text:PDF(258.9KB)

A SIMD Instruction Set and Functional Unit Synthesis Algorithm with SIMD Operation Decomposition
Nozomu TOGAWA Koichi TACHIKAKE Yuichiro MIYAOKA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/07/01
Vol. E88-D  No. 7  pp. 1340-1349
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: Programmable Logic, VLSI, CAD and Layout
Keyword: 
processor synthesisinstruction set synthesispacked SIMD-type functional unitpacked SIMD-type instructionhardware/software cosynthesis
 Summary | Full Text:PDF(810.6KB)

Reconfigurable Adaptive FEC System Based on Reed-Solomon Code with Interleaving
Kazunori SHIMIZU Nozomu TOGAWA Takeshi IKENAGA Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/07/01
Vol. E88-D  No. 7  pp. 1526-1537
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: Adaptive Signal Processing
Keyword: 
dynamic reconfigurable systemadaptive FECReed-Solomon code with interleaving
 Summary | Full Text:PDF(705.6KB)

Sub-operation Parallelism Optimization in SIMD Processor Core Synthesis
Hideki KAWAZU Jumpei UCHIDA Yuichiro MIYAOKA Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/04/01
Vol. E88-A  No. 4  pp. 876-884
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 17th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
processor synthesispacked SIMD type operationhardware/software partitioninghardware/software cosynthesissub-operation parallelism
 Summary | Full Text:PDF(832.2KB)

FPGA-Based Reconfigurable Adaptive FEC
Kazunori SHIMIZU Jumpei UCHIDA Yuichiro MIYAOKA Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/12/01
Vol. E87-A  No. 12  pp. 3036-3046
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: System Level Design
Keyword: 
dynamic reconfigurable systemadaptive FECFPGAReed Solomon codes
 Summary | Full Text:PDF(493.8KB)

High-Level Power Optimization Based on Thread Partitioning
Jumpei UCHIDA Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/12/01
Vol. E87-A  No. 12  pp. 3075-3082
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: System Level Design
Keyword: 
high-level synthesislow powerthread partitioninggated clocks
 Summary | Full Text:PDF(436.6KB)

A Hardware/Software Cosynthesis Algorithm for Processors with Heterogeneous Datapaths
Yuichiro MIYAOKA Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/04/01
Vol. E87-A  No. 4  pp. 830-836
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 16th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
hardware/software cosynthesisprocessor synthesisheterogeneous datapaths and heterogeneous registers
 Summary | Full Text:PDF(383.8KB)

A Retargetable Simulator Generator for DSP Processor Cores with Packed SIMD-type Instructions
Nozomu TOGAWA Kyosuke KASAHARA Yuichiro MIYAOKA Jinku CHOI Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/12/01
Vol. E86-A  No. 12  pp. 3099-3109
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Simulation Accelerator
Keyword: 
retargetable simulatorDSP processorpacked SIMD type instructionhardware/software cosynthesisprocessor synthesis
 Summary | Full Text:PDF(857.2KB)

A Hardware/Software Partitioning Algorithm for Processor Cores with Packed SIMD-Type Instructions
Nozomu TOGAWA Koichi TACHIKAKE Yuichiro MIYAOKA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/12/01
Vol. E86-A  No. 12  pp. 3218-3224
Type of Manuscript:  Special Section LETTER (Special Section on VLSI Design and CAD Algorithms)
Category: Design Methodology
Keyword: 
processor synthesispacked SIMD type instructionhardware/software partitioninghardware/software cosynthesisDSP processor
 Summary | Full Text:PDF(409.2KB)

A Hardware/Software Cosynthesis System for Processor Cores with Content Addressable Memories
Nozomu TOGAWA Takao TOTSUKA Tatsuhiko WAKUI Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/05/01
Vol. E86-A  No. 5  pp. 1082-1092
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
content addressable memoryfunctional memorymicro processor corehardware/software cosynthesishardware/software partitioning
 Summary | Full Text:PDF(639.4KB)

An Algorithm and a Flexible Architecture for Fast Block-Matching Motion Estimation
Jinku CHOI Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/12/01
Vol. E85-A  No. 12  pp. 2603-2611
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: VLSI Design
Keyword: 
motion estimationblock-matchingalgorithmarchitectureVHDL
 Summary | Full Text:PDF(587.8KB)

A High-Level Energy-Optimizing Algorithm for System VLSIs Based on Area/Time/Power Estimation
Shinichi NODA Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/12/01
Vol. E85-A  No. 12  pp. 2655-2666
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High Level Synthesis
Keyword: 
high-level synthesisenergy optimizationarea/time constraints
 Summary | Full Text:PDF(649.9KB)

High-Level Area/Delay/Power Estimation for Low Power System VLSIs with Gated Clocks
Shinichi NODA Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/04/01
Vol. E85-A  No. 4  pp. 827-834
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 14th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
high-level synthesispower estimationgated clockswitching activitysequential circuit
 Summary | Full Text:PDF(500.8KB)

A New Hardware/Software Partitioning Algorithm for DSP Processor Cores with Two Types of Register Files
Nozomu TOGAWA Takashi SAKURAI Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/11/01
Vol. E84-A  No. 11  pp. 2802-2807
Type of Manuscript:  Special Section LETTER (Special Section on VLSI Design and CAD Algorithms)
Category: Hardware/Software Codesign
Keyword: 
hardware/software cosynthesishardware/software partitioningdigital signal processor (DSP)register filehardware unit
 Summary | Full Text:PDF(321.2KB)

Area and Delay Estimation in Hardware/Software Cosynthesis for Digital Signal Processor Cores
Nozomu TOGAWA Yoshiharu KATAOKA Yuichiro MIYAOKA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/11/01
Vol. E84-A  No. 11  pp. 2639-2647
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Hardware/Software Codesign
Keyword: 
area estimationdelay estimationhardware/software cosynthesisdigital signal processor (DSP)microprocessor
 Summary | Full Text:PDF(412KB)

An Area/Time Optimizing Algorithm in High-Level Synthesis of Control-Based Hardwares
Nozomu TOGAWA Masayuki IENAGA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/05/01
Vol. E84-A  No. 5  pp. 1166-1176
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
high-level synthesiscontrol-based hardwarearea/time optimizationschedulingresource allocation
 Summary | Full Text:PDF(683.2KB)

CAM Processor Synthesis Based on Behavioral Descriptions
Nozomu TOGAWA Tatsuhiko WAKUI Tatsuhiko YODEN Makoto TERAJIMA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/12/25
Vol. E83-A  No. 12  pp. 2464-2473
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Co-design and High-level Synthesis
Keyword: 
content addressable memoryfunctional memorybehavioral synthesisbehavioral descriptionhigh-level synthesis
 Summary | Full Text:PDF(699.5KB)

A Hardware/Software Cosynthesis System for Digital Signal Processor Cores with Two Types of Register Files
Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/03/25
Vol. E83-A  No. 3  pp. 442-451
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 12th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
hardware/software cosynthesisprocessor coredigital signal processingtwo types of register files
 Summary | Full Text:PDF(672KB)

A Hardware/Software Cosynthesis System for Digital Signal Processor Cores
Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/11/25
Vol. E82-A  No. 11  pp. 2325-2337
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
hardware/software cosynthesishardware/software partitioningprocessor coredigital signal processing
 Summary | Full Text:PDF(771.5KB)

A Depth-Constrained Technology Mapping Algorithm for Logic-Blocks Composed of Tree-Structured LUTs
Nozomu TOGAWA Koji ARA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/03/25
Vol. E82-A  No. 3  pp. 473-482
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 11th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
technology mappinglogic-blocklookup tablelogic depth
 Summary | Full Text:PDF(447.7KB)

A High-Level Synthesis System for Digital Signal Processing Based on Data-Flow Graph Enumeration
Nozomu TOGAWA Takafumi HISAKI Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/12/25
Vol. E81-A  No. 12  pp. 2563-2575
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: High-level Synthesis
Keyword: 
data-flow oriented processhigh-level synthesisdata-flow graph enumerationschedulingresource binding
 Summary | Full Text:PDF(1MB)

A Fast Scheduling Algorithm Based on Gradual Time-Frame Reduction for Datapath Synthesis
Nozomu TOGAWA Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/06/25
Vol. E81-A  No. 6  pp. 1231-1241
Type of Manuscript:  PAPER
Category: VLSI Design Technology and CAD
Keyword: 
schedulingresource bindinghigh-level synthesisdata-flow graphgradual time-frame reduction
 Summary | Full Text:PDF(844.7KB)

An FPGA Layout Reconfiguration Algorithm Based on Global Routes for Engineering Changes in System Design Specifications
Nozomu TOGAWA Kayoko HAGI Masao YANAGISAWA Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/05/25
Vol. E81-A  No. 5  pp. 873-884
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
FPGAengineering changelayout reconfigurationplacement and routing
 Summary | Full Text:PDF(965.8KB)

Fast Scheduling and Allocation Algorithms for Entropy CODEC
Katsuharu SUZUKI Nozomu TOGAWA Masao SATO Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1997/10/25
Vol. E80-D  No. 10  pp. 982-992
Type of Manuscript:  Special Section PAPER (Special Issue on Synthesis and Verification of Hardware Design)
Category: High Level Synthesis
Keyword: 
entropy CODECschedulingallocationcontrol-flow graph
 Summary | Full Text:PDF(806.4KB)

A performance-Oriented Simultaneous Placement and Global Routing Algorithm for Transport-Processing FPGAs
Nozomu TOGAWA Masao SATO Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/10/25
Vol. E80-A  No. 10  pp. 1795-1806
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
FPGAtransport processinglayout designplacement and routingperformance optimizationcircuit delay
 Summary | Full Text:PDF(897.8KB)

A Circuit Partitioning Algorithm with Path Delay Constraints for Multi-FPGA Systems
Nozomu TOGAWA Masao SATO Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/03/25
Vol. E80-A  No. 3  pp. 494-505
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 9th Karuizawa Workshop on Circuits and Systems)
Category: 
Keyword: 
FPGAmulti-FPGA systemcircuit partitioningpath delaylogic-block replication
 Summary | Full Text:PDF(893.6KB)

A Simultaneous Technology Mapping, Placement, and Global Routing Algorithm for FPGAs with Path Delay Constraints
Nozomu TOGAWA Masao SATO Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/03/25
Vol. E79-A  No. 3  pp. 321-329
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 8th Karuizawa Workshop on Circuits and Systems)
Category: 
Keyword: 
FPGAtechnology mappinglayoutpath delayperformance optimization
 Summary | Full Text:PDF(714.2KB)

A Circuit Partitioning Algorithm with Replication Capability for Multi-FPGA Systems
Nozomu TOGAWA Masao SATO Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/12/25
Vol. E78-A  No. 12  pp. 1765-1776
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
FPGAcircuit partitioninglogic-block replicationnetwork flow
 Summary | Full Text:PDF(904.7KB)

Maple: A Simultaneous Technology Mapping, Placement, and Global Routing Algorithm for Field-Programmable Gate Arrays
Nozomu TOGAWA Masao SATO Tatsuo OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/12/25
Vol. E77-A  No. 12  pp. 2028-2038
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
FPGAlook up tabletechnology mappinglayout designplacementglobal routing
 Summary | Full Text:PDF(929.2KB)