Takeshi IKENAGA


A Design and Prototyping of In-Network Processing Platform to Enable Adaptive Network Services
Masayoshi SHIMAMURA  Takeshi IKENAGA  Masato TSURU 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2013/02/01
Vol. E96-D  No. 2  pp. 238-248
Type of Manuscript: Special Section PAPER (Special Section on The Internet Architectures, Protocols, and Applications for Diversified Futures)
Category: 
Keyword: 
adaptive network servicesadvanced relay node platformadvanced relay processingprovider-managed overlay networksadaptive packet compression scheme
  Summary |  Full Text:PDF (1.5MB)

Low-Complexity Coarse-Level Mode-Mapping Based H.264/AVC to H.264/SVC Spatial Transcoding for Video Conferencing
Lei SUN  Jie LENG  Jia SU  Yiqing HUANG  Hiroomi MOTOHASHI  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/05/01
Vol. E95-D  No. 5  pp. 1313-1323
Type of Manuscript: Special Section PAPER (Special Section on Recent Advances in Multimedia Signal Processing Techniques and Applications)
Category: Video Processing
Keyword: 
AVC-SVC transcodingspatial scalabilitymode-mappinglow-complexityvideo conferencing
  Summary |  Full Text:PDF (2MB)

Splitting TCP Connections Adaptively Inside Networks
Masayoshi SHIMAMURA  Takeshi IKENAGA  Masato TSURU 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/02/01
Vol. E95-D  No. 2  pp. 542-545
Type of Manuscript: Special Section LETTER (Special Section on Architectures, Protocols, and Applications for the Future Internet)
Category: 
Keyword: 
new generation networks (NwGN)advanced relay nodesadaptive split connection schemeTCPQoS
  Summary |  Full Text:PDF (355.8KB)

Content Based Coarse to Fine Adaptive Interpolation Filter for High Resolution Video Coding
Jia SU  Yiqing HUANG  Lei SUN  Shinichi SAKAIDA  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/10/01
Vol. E94-A  No. 10  pp. 2013-2021
Type of Manuscript: PAPER
Category: Image
Keyword: 
motion compensated prediction (MCP)coarse to fineadaptive interpolation filter (AIF)
  Summary |  Full Text:PDF (3.6MB)

Fast H.264/AVC DIRECT Mode Decision Based on Mode Selection and Predicted Rate-Distortion Cost
Xiaocong JIN  Jun SUN  Yiqing HUANG  Jia SU  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/08/01
Vol. E94-D  No. 8  pp. 1653-1662
Type of Manuscript: PAPER
Category: Image Processing and Video Processing
Keyword: 
spatial DIRECTadaptivefast mode decisionH.264/AVC
  Summary |  Full Text:PDF (1.4MB)

Highly Parallel and Fully Reused H.264/AVC High Profile Intra Predictor Generation Engine for Super Hi-Vision 4k4k@60 fps
Yiqing HUANG  Xiaocong JIN  Jin ZHOU  Jia SU  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/04/01
Vol. E94-C  No. 4  pp. 428-438
Type of Manuscript: Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
H.264/AVCintra predictionhardware architecturesuper hi-vision
  Summary |  Full Text:PDF (1.6MB)

A Novel Cache Replacement Policy via Dynamic Adaptive Insertion and Re-Reference Prediction
Xi ZHANG  Chongmin LI  Zhenyu LIU  Haixia WANG  Dongsheng WANG  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/04/01
Vol. E94-C  No. 4  pp. 468-476
Type of Manuscript: Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
cache replacementset duelingadaptive insertionshared cache
  Summary |  Full Text:PDF (1.2MB)

Architecture and Circuit Optimization of Hardwired Integer Motion Estimation Engine for H.264/AVC
Zhenyu LIU  Dongsheng WANG  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/11/01
Vol. E93-A  No. 11  pp. 2065-2073
Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Image Processing
Keyword: 
H.264/AVCvariable block size motion estimationhardwired enginevery large scale integration (VLSI)
  Summary |  Full Text:PDF (1.3MB)

Constant Bit-Rate Multi-Stage Rate Control for Rate-Distortion Optimized H.264/AVC Encoders
Shuijiong WU  Peilin LIU  Yiqing HUANG  Qin LIU  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/07/01
Vol. E93-D  No. 7  pp. 1716-1726
Type of Manuscript: Special Section PAPER (Special Section on Machine Vision and its Applications)
Category: 
Keyword: 
H.264/AVC video CBR transmissionmulti-stage rate controlrate-distortion optimizationLagrange multiplierbit allocation
  Summary |  Full Text:PDF (1.8MB)

Compressing Packets Adaptively Inside Networks
Masayoshi SHIMAMURA  Hiroyuki KOGA  Takeshi IKENAGA  Masato TSURU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/03/01
Vol. E93-B  No. 3  pp. 501-515
Type of Manuscript: Special Section PAPER (Special Section on New Generation Network towards Innovative Future Society)
Category: 
Keyword: 
advanced relay nodeadaptive online lossless packet compression schemenetwork resourcecomputational resource
  Summary |  Full Text:PDF (1.4MB)

Highly Parallel Fractional Motion Estimation Engine for Super Hi-Vision 4k4k@60 fps
Yiqing HUANG  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/03/01
Vol. E93-C  No. 3  pp. 244-252
Type of Manuscript: Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
super hi-visionH.264/AVCFMEVLSI
  Summary |  Full Text:PDF (1.1MB)

Macroblock and Motion Feature Analysis to H.264/AVC Fast Inter Mode Decision
Yiqing HUANG  Qin LIU  Shuijiong WU  Zhewen ZHENG  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3361-3368
Type of Manuscript: Special Section PAPER (Special Section on Image Media Quality)
Category: Coding
Keyword: 
mode decisionH.264/AVCfeature analysis
  Summary |  Full Text:PDF (922.5KB)

Adaptive Sub-Sampling Based Reconfigurable SAD Tree Architecture for HDTV Application
Yiqing HUANG  Qin LIU  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/11/01
Vol. E92-A  No. 11  pp. 2819-2829
Type of Manuscript: Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Video Coding
Keyword: 
reconfigurable architectureH.264/AVCSAD treeVLSIHDTV
  Summary |  Full Text:PDF (1.3MB)

VLSI Oriented Fast Motion Estimation Algorithm Based on Pixel Difference, Block Overlapping and Motion Feature Analysis
Yiqing HUANG  Qin LIU  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/08/01
Vol. E92-A  No. 8  pp. 1986-1999
Type of Manuscript: Special Section PAPER (Special Section on Signal Processing)
Category: Realization
Keyword: 
H.264/AVCMEpixel differenceblock overlappingmotion feature
  Summary |  Full Text:PDF (1.3MB)

Development of Single Sign-On System with Hardware Token and Key Management Server
Daiki NOBAYASHI  Yutaka NAKAMURA  Takeshi IKENAGA  Yoshiaki HORI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/05/01
Vol. E92-D  No. 5  pp. 826-835
Type of Manuscript: Special Section PAPER (Special Section on Information and Communication System Security)
Category: Authentication and Authorization Techniques
Keyword: 
single sign-onhardware tokenkey management serverauthenticationsecurity
  Summary |  Full Text:PDF (795KB)

An Ultra-Low Bandwidth Design Method for MPEG-2 to H.264/AVC Transcoding
Xianghui WEI  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/04/01
Vol. E92-A  No. 4  pp. 1072-1079
Type of Manuscript: Special Section PAPER (Special Section on Advanced Technologies Emerging Mainly from the 21st Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
H.264MPEG-2transcodingmotion estimationsearch window reuse
  Summary |  Full Text:PDF (726.7KB)

Hardware-Oriented Early Detection Algorithms for 44 and 88 All-Zero Blocks in H.264
Qin LIU  Yiqing HUANG  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/04/01
Vol. E92-A  No. 4  pp. 1063-1071
Type of Manuscript: Special Section PAPER (Special Section on Advanced Technologies Emerging Mainly from the 21st Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
all-zero blockearly detectionsum of absolute differencehardware-orientedH.264
  Summary |  Full Text:PDF (573.7KB)

A High Performance Partially-Parallel Irregular LDPC Decoder Based on Sum-Delta Message Passing Schedule
Wen JI  Yuta ABE  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/12/01
Vol. E91-A  No. 12  pp. 3622-3629
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Embedded, Real-Time and Reconfigurable Systems
Keyword: 
LDPCmessage passing algorithm
  Summary |  Full Text:PDF (564.5KB)

High Throughput VLSI Architecture of a Fast Mode Decision Algorithm for H.264/AVC Intra Encoding
Tianruo ZHANG  Guifen TIAN  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/12/01
Vol. E91-A  No. 12  pp. 3630-3637
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Embedded, Real-Time and Reconfigurable Systems
Keyword: 
H.264/AVCintra predictionfast mode decision algorithmVLSI architecture
  Summary |  Full Text:PDF (868.6KB)

Variable Block Size Motion Vector Retrieval Schemes for H.264 Inter Frame Error Concealment
Lei WANG  Jun WANG  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/10/01
Vol. E91-A  No. 10  pp. 2945-2953
Type of Manuscript: Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Video Coding
Keyword: 
H.264/AVCvariable block size error concealmentmotion vector refinementdirectional spatio-temporal boundary matching algorithm
  Summary |  Full Text:PDF (586.4KB)

Standard Deviation and Intra Prediction Mode Based Adaptive Spatial Error Concealment (SEC) in H.264/AVC
Jun WANG  Lei WANG  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/10/01
Vol. E91-A  No. 10  pp. 2954-2962
Type of Manuscript: Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Video Coding
Keyword: 
SECadaptivestandard deviationintra prediction mode
  Summary |  Full Text:PDF (1.1MB)

Macroblock Feature Based Complexity Reduction for H.264/AVC Motion Estimation
Yiqing HUANG  Qin LIU  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/10/01
Vol. E91-A  No. 10  pp. 2934-2944
Type of Manuscript: Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Video Coding
Keyword: 
H.264/AVCMEsimilarity analysismotion analysis
  Summary |  Full Text:PDF (1.8MB)

Edge Block Detection and Motion Vector Information Based Fast VBSME Algorithm
Qin LIU  Yiqing HUANG  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/08/01
Vol. E91-A  No. 8  pp. 1935-1943
Type of Manuscript: Special Section PAPER (Special Section on Signal Processing)
Category: 
Keyword: 
motion estimationaliasingsubsamplingmultiple reference framesearch range
  Summary |  Full Text:PDF (875.3KB)

Content-Aware Fast Motion Estimation for H.264/AVC
Zhenyu LIU  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/08/01
Vol. E91-A  No. 8  pp. 1944-1952
Type of Manuscript: Special Section PAPER (Special Section on Signal Processing)
Category: 
Keyword: 
H.264/AVCmotion estimationearly terminationmultiple reference framevariable block size
  Summary |  Full Text:PDF (1.3MB)

A 41 mW VGA@30 fps Quadtree Video Encoder for Video Surveillance Systems
Qin LIU  Seiichiro HIRATSUKA  Kazunori SHIMIZU  Shinsuke USHIKI  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/04/01
Vol. E91-C  No. 4  pp. 449-456
Type of Manuscript: Special Section PAPER (Special Section on Advanced Technologies in Digital LSIs and Memories)
Category: 
Keyword: 
video surveillance systemmotion estimationME-MC processorquadtreelow power consumption
  Summary |  Full Text:PDF (1MB)

Adaptive Search Range Algorithms for Variable Block Size Motion Estimation in H.264/AVC
Zhenxing CHEN  Yang SONG  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. 1015-1022
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
H.264/AVCVBSMEASRMVD
  Summary |  Full Text:PDF (1.3MB)

A High-Speed Design of Montgomery Multiplier
Yibo FAN  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. 971-977
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
Montgomery multiplierhigh-speedhigh-radixscalable
  Summary |  Full Text:PDF (1.3MB)

Parallel Improved HDTV720p Targeted Propagate Partial SAD Architecture for Variable Block Size Motion Estimation in H.264/AVC
Yiqing HUANG  Zhenyu LIU  Yang SONG  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/04/01
Vol. E91-A  No. 4  pp. 987-997
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
H.264/AVCvariable block size motion estimationhardware architecture
  Summary |  Full Text:PDF (845.4KB)

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 (450.2KB)

Reconfigurable Variable Block Size Motion Estimation Architecture for Search Range Reduction Algorithm
Yibo FAN  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/04/01
Vol. E91-C  No. 4  pp. 440-448
Type of Manuscript: Special Section PAPER (Special Section on Advanced Technologies in Digital LSIs and Memories)
Category: 
Keyword: 
reconfigurableVBSMEsearch range reductionH.264
  Summary |  Full Text:PDF (1.9MB)

An Unequal Secure Encryption Scheme for H.264/AVC Video Compression Standard
Yibo FAN  Jidong WANG  Takeshi IKENAGA  Yukiyasu TSUNOO  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/01/01
Vol. E91-A  No. 1  pp. 12-21
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Symmetric Cryptography
Keyword: 
Unequal Secure Encryptionvideo encryptionselective encryptionH.264/AVCAESLEX
  Summary |  Full Text:PDF (2.2MB)

Efficient Fully-Parallel LDPC Decoder Design with Improved Simplified Min-Sum Algorithms
Qi WANG  Kazunori SHIMIZU  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/10/01
Vol. E90-C  No. 10  pp. 1964-1971
Type of Manuscript: Special Section PAPER (Special Section on VLSI Technology toward Frontiers of New Market)
Category: VLSI Architecture for Communication/Server Systems
Keyword: 
area and power efficient fully-parallel LDPC decoderimproved simplified min-sum algorithmspower-saved strategy
  Summary |  Full Text:PDF (515.2KB)

Lossy Strict Multilevel Successive Elimination Algorithm for Fast Motion Estimation
Yang SONG  Zhenyu LIU  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/04/01
Vol. E90-A  No. 4  pp. 764-770
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 19th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
motion estimation (ME)successive elimination algorithm (SEA)multilevel successive elimination algorithm (MSEA)strict multilevel successive elimination algorithm (SMSEA)
  Summary |  Full Text:PDF (501.3KB)

Lossless VLSI Oriented Full Computation Reusing Algorithm for H.264/AVC Fractional Motion Estimation
Ming SHAO  Zhenyu LIU  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/04/01
Vol. E90-A  No. 4  pp. 756-763
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 19th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
H.264/AVCFMEcomputation reusinglosslessVLSI
  Summary |  Full Text:PDF (781.3KB)

Low-Power Partial Distortion Sorting Fast Motion Estimation Algorithms and VLSI Implementations
Yang SONG  Zhenyu LIU  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/01/01
Vol. E90-D  No. 1  pp. 108-117
Type of Manuscript: Special Section PAPER (Special Section on Advanced Image Technology)
Category: 
Keyword: 
motion estimation (ME)partial distortion sorting (PDS)systolic array architecture
  Summary |  Full Text:PDF (806.2KB)

Geometrical, Physical and Text/Symbol Analysis Based Approach of Traffic Sign Detection System
Yangxing LIU  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/01/01
Vol. E90-D  No. 1  pp. 208-216
Type of Manuscript: Special Section PAPER (Special Section on Advanced Image Technology)
Category: 
Keyword: 
traffic sign detectiongeometrical analysisphysical analysistext detection
  Summary |  Full Text:PDF (1.1MB)

Content-Based Complexity Reduction Methods for MPEG-2 to H.264 Transcoding
Shen LI  Lingfeng LI  Takeshi IKENAGA  Shunichi ISHIWATA  Masataka MATSUI  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/01/01
Vol. E90-D  No. 1  pp. 90-98
Type of Manuscript: Special Section PAPER (Special Section on Advanced Image Technology)
Category: 
Keyword: 
MPEG-2/H.264 video transcodingcontent-basedmode decisionintra prediction
  Summary |  Full Text:PDF (671.4KB)

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 (1018KB)

A Fine-Grain Scalable and Low Memory Cost Variable Block Size Motion Estimation Architecture for H.264/AVC
Zhenyu LIU  Yang SONG  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/12/01
Vol. E89-C  No. 12  pp. 1928-1936
Type of Manuscript: PAPER
Category: Integrated Electronics
Keyword: 
H.264AVCvariable block size motion estimationVLSI architecture
  Summary |  Full Text:PDF (667.7KB)

A VLSI Architecture for Variable Block Size Motion Estimation in H.264/AVC with Low Cost Memory Organization
Yang SONG  Zhenyu LIU  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. 3594-3601
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: VLSI Architecture
Keyword: 
variable block size motion estimation (VBSME)memory organizationH.264/AVC
  Summary |  Full Text:PDF (503.5KB)

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 (749.1KB)

Scalable VLSI Architecture for Variable Block Size Integer Motion Estimation in H.264/AVC
Yang SONG  Zhenyu LIU  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 979-988
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 18th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
variable block size motion estimation (VBSME)H.264/AVCvery large scale integration (VLSI) architecture
  Summary |  Full Text:PDF (1.4MB)

A Hardware Implementation of a Content-Based Motion Estimation Algorithm for Real-Time MPEG-4 Video Coding
Shen LI  Takeshi IKENAGA  Hideki TAKEDA  Masataka MATSUI  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 932-940
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 18th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
content-basedmotion estimationpower-efficientreal-timeMPEG-4
  Summary |  Full Text:PDF (1.2MB)

A Contour-Based Robust Algorithm for Text Detection in Color Images
Yangxing LIU  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 1221-1230
Type of Manuscript: PAPER
Category: Image Recognition, Computer Vision
Keyword: 
text detectiontexture analysisconnected component analysisregion contouredge detection
  Summary |  Full Text:PDF (1.2MB)

A Selective Video Encryption Scheme for MPEG Compression Standard
Gang LIU  Takeshi IKENAGA  Satoshi GOTO  Takaaki BABA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/01/01
Vol. E89-A  No. 1  pp. 194-202
Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Application
Keyword: 
commercial multimedia applicationsselective encryptionMPEG codecMPEG bitstreamdata shuffleprocessing overheadbit overhead
  Summary |  Full Text:PDF (525.6KB)

A VLSI Array Processing Oriented Fast Fourier Transform Algorithm and Hardware Implementation
Zhenyu LIU  Yang SONG  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/12/01
Vol. E88-A  No. 12  pp. 3523-3530
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: VLSI Architecture
Keyword: 
fast Fourier transform (FFT)array processingsingleton algorithm
  Summary |  Full Text:PDF (1.5MB)

A Highly Parallel Architecture for Deblocking Filter in H.264/AVC
Lingfeng LI  Satoshi GOTO  Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/07/01
Vol. E88-D  No. 7  pp. 1623-1629
Type of Manuscript: Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: Parallel and/or Distributed Processing Systems
Keyword: 
deblocking filterH.264/AVCparallel memoryadaptive filter
  Summary |  Full Text:PDF (937.2KB)

Content-Based Motion Estimation with Extended Temporal-Spatial Analysis
Shen LI  Yong JIANG  Takeshi IKENAGA  Satoshi GOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/07/01
Vol. E88-D  No. 7  pp. 1561-1568
Type of Manuscript: Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: Image Processing and Multimedia Systems
Keyword: 
motion estimationadaptivecontent-basedspatial and temporal correlation
  Summary |  Full Text:PDF (992KB)

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 (707.5KB)

Performance Evaluation of Channel Switching Scheme for Packet Data Transmission in Radio Network Controller
Yoshiaki OHTA  Kenji KAWAHARA  Takeshi IKENAGA  Yuji OIE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/05/01
Vol. E87-B  No. 5  pp. 1141-1150
Type of Manuscript: Special Section PAPER (Special Section on Mobile Multimedia Communications)
Category: Mobile Radio
Keyword: 
IMT-2000W-CDMARNCdedicated channelcommon channel
  Summary |  Full Text:PDF (775.5KB)

Performance Analysis of Queue Length Distribution of Tandem Routers for QoS Measurement
Nobuo RYOKI  Kenji KAWAHARA  Takeshi IKENAGA  Yuji OIE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/02/01
Vol. E86-B  No. 2  pp. 614-621
Type of Manuscript: Special Section PAPER (Special Issue on Internet Technology III)
Category: Traffic Monitoring and Evaluation
Keyword: 
QoS measurementdelay performancecorrelation
  Summary |  Full Text:PDF (830.8KB)

QoS Routing Algorithm Based on Multiclasses Traffic Load
Hedia KOCHKAR  Takeshi IKENAGA  Yuji OIE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2002/08/01
Vol. E85-D  No. 8  pp. 1219-1225
Type of Manuscript: Special Section PAPER (Special Issue on New Technologies in the Internet and their Applications)
Category: 
Keyword: 
QoSroutingmulti-classlink cost
  Summary |  Full Text:PDF (521.9KB)

Quality of Assured Service through Multiple DiffServ Domains
Kazumi KUMAZOE  Yoshiaki HORI  Takeshi IKENAGA  Yuji OIE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2002/08/01
Vol. E85-D  No. 8  pp. 1226-1232
Type of Manuscript: Special Section PAPER (Special Issue on New Technologies in the Internet and their Applications)
Category: 
Keyword: 
diffservend-to-end QoSAFassured forwarding servicemulti-domain
  Summary |  Full Text:PDF (439.2KB)

Queue Management of RIO to Achieve High Throughput and Low Delay
Yoshiaki HORI  Takeshi IKENAGA  Yuji OIE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/01/01
Vol. E85-B  No. 1  pp. 63-69
Type of Manuscript: Special Section PAPER (Special Issue on Internet Technology II -- Traffic Control and Performance Evaluation in the Internet)
Category: 
Keyword: 
differentiated servicesAF-PHBRIOEWMA
  Summary |  Full Text:PDF (684.2KB)

Effectiveness and Issues of Rerouting Algorithms for QoS Networks
Takeshi IKENAGA  Kenji KAWAHARA  Yuji OIE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/06/01
Vol. E84-B  No. 6  pp. 1553-1560
Type of Manuscript: Special Section PAPER (Special Issue on New Developments on QoS Technologies for Information Networks)
Category: 
Keyword: 
routingQoS guaranteereroutingperformance evaluation
  Summary |  Full Text:PDF (490.3KB)

A Distributed BIST Technique and Its Test Design Platrorm for VLSIs
Takeshi IKENAGA  Takeshi OGURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/11/20
Vol. E78-C  No. 11  pp. 1618-1623
Type of Manuscript: PAPER
Category: Integrated Electronics
Keyword: 
distributed built-in self-testimage processing LSIpseudo random pattern generatorregular patternspace compressor
  Summary |  Full Text:PDF (532.8KB)