Hiroyuki KOBAYASHI


Two-Layer Lossless HDR Coding Using Histogram Packing Technique with Backward Compatibility to JPEG
Osamu WATANABE Hiroyuki KOBAYASHI Hitoshi KIYA 
Publication:   
Publication Date: 2018/11/01
Vol. E101-A  No. 11  pp. 1823-1831
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Image, Multimedia Environment Tech
Keyword: 
JPEG XTHDRlossless codingbackward compatibility to JPEG
 Summary | Full Text:PDF(2.5MB)

An Efficient Lossless Compression Method Using Histogram Packing for HDR Images in OpenEXR Format
Taku ODAKA Wannida SAE-TANG Masaaki FUJIYOSHI Hiroyuki KOBAYASHI Masahiro IWAHASHI Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/11/01
Vol. E97-A  No. 11  pp. 2181-2183
Type of Manuscript:  Special Section LETTER (Special Section on Smart Multimedia & Communication Systems)
Category: 
Keyword: 
index transformationcodingsparse histogramPIZZIP
 Summary | Full Text:PDF(740.7KB)

A-104 dBc/Hz In-Band Phase Noise 3 GHz All Digital PLL with Phase Interpolation Based Hierarchical Time to Digital Converter
Daisuke MIYASHITA Hiroyuki KOBAYASHI Jun DEGUCHI Shouhei KOUSAI Mototsugu HAMADA Ryuichi FUJIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/06/01
Vol. E95-C  No. 6  pp. 1008-1016
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
ADPLLTDCphase interpolatorphase noise
 Summary | Full Text:PDF(2.8MB)

A 0.13 µm CMOS Bluetooth EDR Transceiver with High Sensitivity over Wide Temperature Range and Immunity to Process Variation
Kenichi AGAWA Shinichiro ISHIZUKA Hideaki MAJIMA Hiroyuki KOBAYASHI Masayuki KOIZUMI Takeshi NAGANO Makoto ARAI Yutaka SHIMIZU Asuka MAKI Go URAKAWA Tadashi TERADA Nobuyuki ITOH Mototsugu HAMADA Fumie FUJII Tadamasa KATO Sadayuki YOSHITOMI Nobuaki OTSUKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/06/01
Vol. E93-C  No. 6  pp. 803-811
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
CMOS wireless transceiverBluetoothsensitivitytemperature compensationphase noiseVCO pullingMOS switchleakage current
 Summary | Full Text:PDF(2.7MB)

A Study on Miniaturization of Printed Disc Monopole Antenna for UWB Applications Using Notched Ground Plane
Hiroyuki KOBAYASHI Takayuki SASAMORI Teruo TOBANA Kohshi ABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/09/01
Vol. E90-B  No. 9  pp. 2239-2245
Type of Manuscript:  Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation)
Category: Antennas
Keyword: 
UWB antennaprinted antennaplanar disc monopole antennanotched groundFDTD
 Summary | Full Text:PDF(1.1MB)

Proposal of Metrics for SSTA Accuracy Evaluation
Hiroyuki KOBAYASHI Nobuto ONO Takashi SATO Jiro IWAI Hidenari NAKASHIMA Takaaki OKUMURA Masanori HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/04/01
Vol. E90-A  No. 4  pp. 808-814
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 19th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
statistical static timing analysisstatistical max operationDFMSoC
 Summary | Full Text:PDF(1.1MB)

Impact of Intrinsic Parasitic Extraction Errors on Timing and Noise Estimation
Toshiki KANAMOTO Shigekiyo AKUTSU Tamiyo NAKABAYASHI Takahiro ICHINOMIYA Koutaro HACHIYA Atsushi KUROKAWA Hiroshi ISHIKAWA Sakae MUROMOTO Hiroyuki KOBAYASHI Masanori HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/12/01
Vol. E89-A  No. 12  pp. 3666-3670
Type of Manuscript:  Special Section LETTER (Special Section on VLSI Design and CAD Algorithms)
Category: Interconnect
Keyword: 
interconnectdelay variationparasitic capacitanceSoC
 Summary | Full Text:PDF(433.5KB)

A Method to Derive SSO Design Rule Considering Jitter Constraint
Koutaro HACHIYA Hiroyuki KOBAYASHI Takaaki OKUMURA Takashi SATO Hiroki OKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 865-872
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 18th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
simultaneous switching outputsimultaneous switching noisejitterASIC
 Summary | Full Text:PDF(437.5KB)

A 2.4-GHz Temperature-Compensated CMOS LC-VCO for Low Frequency Drift Low-Power Direct-Modulation GFSK Transmitters
Toru TANZAWA Kenichi AGAWA Hiroyuki SHIBAYAMA Ryota TERAUCHI Katsumi HISANO Hiroki ISHIKURO Shouhei KOUSAI Hiroyuki KOBAYASHI Hideaki MAJIMA Toru TAKAYAMA Masayuki KOIZUMI Fumitoshi HATORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/04/01
Vol. E88-C  No. 4  pp. 490-495
Type of Manuscript:  Special Section PAPER (Special Section on Low-Power LSI and Low-Power IP)
Category: Analog
Keyword: 
GFSKCMOS LC-VCOBluetoothdirect modulationlow power
 Summary | Full Text:PDF(3.1MB)

A Full-CMOS Single Chip Bluetooth LSI with 1.5 MHz-IF Receiver and Direct Modulation Transmitter
Fumitoshi HATORI Hiroki ISHIKURO Mototsugu HAMADA Ken-ichi AGAWA Shouhei KOUSAI Hiroyuki KOBAYASHI Duc Minh NGUYEN 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/04/01
Vol. E87-C  No. 4  pp. 556-562
Type of Manuscript:  Special Section PAPER (Special Section on Low-Power System LSI, IP and Related Technologies)
Category: 
Keyword: 
Bluetoothwireless communicationCMOS transceiverlow-IFdirect modulationlow power
 Summary | Full Text:PDF(917.8KB)

Performance Estimation at Architecture Level for Embedded Systems
Hiroshi MIZUNO Hiroyuki KOBAYASHI Takao ONOYE Isao SHIRAKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/12/01
Vol. E85-A  No. 12  pp. 2636-2644
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Performance Estimation
Keyword: 
power dissipationarchitectureembedded systemco-design
 Summary | Full Text:PDF(800.7KB)

A Method of Extracting Embedded Binary Data from JPEG Bitstreams Using Standard JPEG Decoder
Yoshihiro NOGUCHI Hiroyuki KOBAYASHI Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/08/25
Vol. E83-A  No. 8  pp. 1582-1588
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Image/Visual Signal Processing
Keyword: 
digital watermarkJPEGembedding binary datastandard JPEG decoder
 Summary | Full Text:PDF(786.9KB)

Design of Integer Wavelet Filters for Image Compression
Hitoshi KIYA Hiroyuki KOBAYASHI Osamu WATANABE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/03/25
Vol. E83-A  No. 3  pp. 487-491
Type of Manuscript:  Special Section LETTER (Special Section of Selected Papers from the 12th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
JPEG2000integer waveletinteger coefficients filterlifting
 Summary | Full Text:PDF(257.7KB)

A Method of Inserting Binary Data into MPEG Video in the Compressed Domain
Hitoshi KIYA Yoshihiro NOGUCHI Ayuko TAKAGI Hiroyuki KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/08/25
Vol. E82-A  No. 8  pp. 1485-1492
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
inserting binary dataMPEGdigital librarywatermarking
 Summary | Full Text:PDF(939.8KB)