Hiroki KOGA


FOREWORD
Jun MURAMATSU Hiroki KOGA 
Publication:   
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 2556-2557
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
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A Characterization of Optimal FF Coding Rate Using a New Optimistically Optimal Code
Mitsuharu ARIMURA Hiroki KOGA Ken-ichi IWATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/12/01
Vol. E96-A  No. 12  pp. 2443-2446
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Source Coding
Keyword: 
information spectrumgeneral sourceFF codeoptimistic achievable coding rate
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Redundancy-Optimal FF Codes for a General Source and Its Relationships to the Rate-Optimal FF Codes
Mitsuharu ARIMURA Hiroki KOGA Ken-ichi IWATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/12/01
Vol. E96-A  No. 12  pp. 2332-2342
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Source Coding
Keyword: 
fixed-to-fixed length source codinginformation-spectrum methodsgeneral sourcescoding rateredundancy
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On the Achievable Rate Region in the Optimistic Sense for Separate Coding of Two Correlated General Sources
Hiroki KOGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/12/01
Vol. E95-A  No. 12  pp. 2100-2106
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Source Coding
Keyword: 
correlated sourcesgeneral sourceoptimistic codingachievable rate regioninformation-spectrum methods
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Four Limits in Probability and Their Roles in Source Coding
Hiroki KOGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/11/01
Vol. E94-A  No. 11  pp. 2073-2082
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Source Coding
Keyword: 
coding theoreminformation-spectrum methodsoptimistic codingstrong converse propertysmooth Renyi entropy
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A Digital Fingerprinting Code Based on a Projective Plane and Its Identifiability of All Malicious Users
Hiroki KOGA Yusuke MINAMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 223-232
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Digital Fingerprinting
Keyword: 
digital fingerprintinganti-collusion codec-frameproof codeprojective planeBIBD
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New Results on Optimistic Source Coding
Naoki SATO Hiroki KOGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/10/01
Vol. E87-A  No. 10  pp. 2577-2580
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Information Theory
Keyword: 
source codingfixed-length codinggeneral sourceinformation-spectrumoptimistic coding
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On the Problem of Generating Mutually Independent Random Sequences
Jun MURAMATSU Hiroki KOGA Takafumi MUKOUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/05/01
Vol. E86-A  No. 5  pp. 1275-1284
Type of Manuscript:  PAPER
Category: Information Theory
Keyword: 
random number generatormutually independentsource codingdata compression with side information
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A Visual Secret Sharing Scheme for Color Images Based on Meanvalue-Color Mixing
Takeru ISHIHARA Hiroki KOGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/01/01
Vol. E86-A  No. 1  pp. 194-197
Type of Manuscript:  Special Section LETTER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
visual secret sharing schemevisual cryptographysecret sharinggeneral access structure
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Measuring Contact Resistance of a Poly-Silicon Plug on a Lightly Doped Single-Diffusion Region in DRAM Cells
Naoki KASAI Hiroki KOGA Yoshihiro TAKAISHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/05/01
Vol. E85-C  No. 5  pp. 1146-1150
Type of Manuscript:  Special Section PAPER (Special Issue on Microelectronic Test Structures)
Category: 
Keyword: 
test structurecontact resistancepoly-silicon plugDRAM cell
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New Constructions of the Lattice-Based Visual Secret Sharing Scheme Using Mixture of Colors
Takeru ISHIHARA Hiroki KOGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/01/01
Vol. E85-A  No. 1  pp. 158-166
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
visual secret sharing scheme(k,n) threshold schemevisual cryptographysecret sharing scheme
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An Analytic Construction of the Visual Secret Sharing Scheme for Color Images
Hiroki KOGA Mitsugu IWAMOTO Hirosuke YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/01/01
Vol. E84-A  No. 1  pp. 262-272
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
secret sharingvisual secret sharingvisual cryptologygeneral access structure
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A Generalization of the Simmons' Bounds on Secret-Key Authentication Systems
Hiroki KOGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/10/25
Vol. E83-A  No. 10  pp. 1983-1986
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
authenticationimpersonation attacksubstitution attackinformation-theoretic boundsinformation-spectrum methods
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Coding Theorems for Secret-Key Authentication Systems
Hiroki KOGA Hirosuke YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/08/25
Vol. E83-A  No. 8  pp. 1691-1703
Type of Manuscript:  PAPER
Category: Information Theory
Keyword: 
authenticationimpersonation attacksubstitution attackinformation-theoretic boundscoding theorem
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Proposal of a Lattice-Based Visual Secret Sharing Scheme for Color and Gray-Scale Images
Hiroki KOGA Hirosuke YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/06/25
Vol. E81-A  No. 6  pp. 1262-1269
Type of Manuscript:  PAPER
Category: Information Security
Keyword: 
secret sharingvisual secret sharingvisual cryptography
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On the Asymptotic Behaviors of the Recurrence Time with Fidelity Criterion for Discrete Memoryless Sources and Memoryless Gaussian Sources
Hiroki KOGA Suguru ARIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/05/25
Vol. E81-A  No. 5  pp. 981-986
Type of Manuscript:  LETTER
Category: Information Theory and Coding Theory
Keyword: 
lossy data compressionLempel-Ziv coderecurrence time fidelity criterionstring matching
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Improvement of Refresh Characteristics by SIMOX Technology for Giga-bit DRAMs
Takaho TANIGAWA Akira YOSHINO Hiroki KOGA Shuichi OHYA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/06/25
Vol. E79-C  No. 6  pp. 781-786
Type of Manuscript:  Special Section PAPER (Special Issue on ULSI Memory Technology)
Category: Dynamic RAMs
Keyword: 
refresh characteristicsdata retention timeSIMOXDRAM
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Design Rule Relaxation Approach for High-Density DRAMs
Takanori SAEKI Eiichiro KAKEHASHI Hidemitu MORI Hiroki KOGA Kenji NODA Mamoru FUJITA Hiroshi SUGAWARA Kyoichi NAGATA Shozo NISHIMOTO Tatsunori MUROTANI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1994/03/25
Vol. E77-C  No. 3  pp. 406-415
Type of Manuscript:  Special Section PAPER (Special Issue on Quarter Micron Si Device and Process Technologies)
Category: Device Technology
Keyword: 
DRAMdesign ruleclose packed cell arrayBoosted Dual Word-Line scheme
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Asymptotic Optimality of Modified Spherical Codes with Scalar Quentization of Gain for Memoryless Gaussian Sources
Hiroki KOGA Suguru ARIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/09/25
Vol. E76-A  No. 9  pp. 1403-1410
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
data compressionGaussian sourcespherical code
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