Keiichiro Kagawa

86 papers A* 2B 2C 3Misc 1Journal 34Unranked 44

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	Filming the Flight of Light With Charge-Domain Spatio-Temporal Compressive CMOS Image Sensors. ICIPW Keiichiro Kagawa
2025	—	`conf`	High-Fidelity Scene Response Reconstruction For Flash Lidar Using Charge-Domain Time-Compressive Tof Image Sensor. ICIPW Daisuke Hayashi, Michitaka Yoshida, Nobukazu Teranishi, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara, Keiichiro Kagawa
2024	J	`jnl`	Critical slowing down for relaxation in the Cahn-Hilliard equation with dynamic boundary conditions. JSIAM Lett. Keiichiro Kagawa, Yoshihiro Yamazaki
2024	—	`conf`	Simulation Methods for Lock-In Pixels Considering Gating Driver's Response. IEEE SENSORS Ryosuke Suzuki, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2024	—	`conf`	Single-Shot Efficient Depth Imaging Based on Time-Compressive CMOS Image Sensor. IEEE SENSORS Michitaka Yoshida, Daisuke Hayashi, De Xing Lioe, Keita Yasutomi, Shoji Kawahito, Keiichiro Kagawa, Hajime Nagahara
2023	J	`jnl`	A Time-of-Flight Image Sensor Using 8-Tap P-N Junction Demodulator Pixels. Sensors Ryosuke Miyazawa, Yuya Shirakawa, Kamel Mars, Keita Yasutomi, Keiichiro Kagawa, Satoshi Aoyama, Shoji Kawahito
2023	J	`jnl`	Depth Quality Improvement with a 607 MHz Time-Compressive Computational Pseudo-dToF CMOS Image Sensor. Sensors Anh Ngoc Pham, Thoriq Ibrahim, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara, Keiichiro Kagawa
2023	—	`conf`	Spatio-Temporal Super-Resolution for CS-Based ToF 3D Imaging. EUSIPCO Alvaro Lopez Paredes, Miguel Heredia Conde, Thoriq Ibrahim, Anh Ngoc Pham, Keiichiro Kagawa
2022	—	`conf`	A 38µm Range Precision Time-of-Flight CMOS Range Line Imager with Gating Driver Jitter Reduction Using Charge-Injection Pseudo Photocurrent Reference. ISSCC Keita Yasutomi, Tatsuki Furuhashi, Koki Sagawa, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito
2022	J	`jnl`	A Dual-Mode 303-Megaframes-per-Second Charge-Domain Time-Compressive Computational CMOS Image Sensor. Sensors Keiichiro Kagawa, Masaya Horio, Anh Ngoc Pham, Thoriq Ibrahim, Shin-ichiro Okihara, Tatsuki Furuhashi, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara
2022	—	`conf`	Computational ultrafast CMOS image sensors. OECC/PSC Keiichiro Kagawa
2022	J	`jnl`	Resolving Multi-Path Interference in Compressive Time-of-Flight Depth Imaging with a Multi-Tap Macro-Pixel Computational CMOS Image Sensor. Sensors Masaya Horio, Yu Feng, Tomoya Kokado, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito, Takashi Komuro, Hajime Nagahara, Keiichiro Kagawa
2021	J	`jnl`	Correction to: Transmission of correct gaze direction in video conferencing using screen-embedded cameras. Multim. Tools Appl. Kazuki Kobayashi, Takashi Komuro, Keiichiro Kagawa, Shoji Kawahito
2021	J	`jnl`	High-Linearity High-Resolution Time-of-Flight Linear-Array Digital Image Sensor Using Time-Domain Feedback. Sensors Juyeong Kim, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2021	J	`jnl`	Transmission of correct gaze direction in video conferencing using screen-embedded cameras. Multim. Tools Appl. Kazuki Kobayashi, Takashi Komuro, Keiichiro Kagawa, Shoji Kawahito
2020	J	`jnl`	An 8-Tap CMOS Lock-In Pixel Image Sensor for Short-Pulse Time-of-Flight Measurements. Sensors Yuya Shirakawa, Keita Yasutomi, Keiichiro Kagawa, Satoshi Aoyama, Shoji Kawahito
2020	—	`conf`	Palm-Controlled Pointing Interface Using a Dynamic Photometric Stereo Camera. HCI (48) Yoshio Matsuda, Takashi Komuro, Takuya Yoda, Hajime Nagahara, Shoji Kawahito, Keiichiro Kagawa
2020	Misc	`conf`	Single-Shot Real-Time Multiple-Path Time-of-Flight Depth Imaging for Multi-Aperture and Macro-Pixel Sensors. ICASSP Miguel Heredia Conde, Keiichiro Kagawa, Tomoya Kokado, Shoji Kawahito, Otmar Loffeld
2019	J	`jnl`	A Sub-100 $\mu$ m-Range-Resolution Time-of-Flight Range Image Sensor With Three-Tap Lock-In Pixels, Non-Overlapping Gate Clock, and Reference Plane Sampling. IEEE J. Solid State Circuits Keita Yasutomi, Yushi Okura, Keiichiro Kagawa, Shoji Kawahito
2019	J	`jnl`	A Time-Resolved NIR Lock-In Pixel CMOS Image Sensor With Background Cancelling Capability for Remote Heart Rate Detection. IEEE J. Solid State Circuits Chen Cao, Yuya Shirakawa, Leyi Tan, Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Sung-Wook Jun, Tomohiko Kosugi, Satoshi Aoyama, Nobukazu Teranishi, Norimichi Tsumura, Shoji Kawahito
2019	J	`jnl`	A Wide Dynamic Range CMOS Image Sensor with a Charge Splitting Gate and Two Storage Diodes. Sensors Minho Lee, Min-Woong Seo, Juyeong Kim, Keita Yasutomi, Keiichiro Kagawa, Jang-Kyoo Shin, Shoji Kawahito
2019	J	`jnl`	Noncontact heart rate measurement using a high-sensitivity camera in a low-light environment. Artif. Life Robotics Genki Okada, Ryota Mitsuhashi, Keiichiro Kagawa, Shoji Kawahito, Norimichi Tsumura
2019	J	`jnl`	Plasmonic Color Filter Array with High Color Purity for CMOS Image Sensors. Sensors Atsutaka Miyamichi, Atsushi Ono, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
2019	J	`jnl`	Super Field-of-View Lensless Camera by Coded Image Sensors. Sensors Tomoya Nakamura, Keiichiro Kagawa, Shiho Torashima, Masahiro Yamaguchi
2018	—	`conf`	A Distance Measurement Method Using A Time-of-Flight CMOS Range Image Sensor with 4-Tap Output Pixels and Multiple Time-Windows. IMSE Kohei Yamada, Komazawa Akihito, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2018	J	`jnl`	A Silicon-on-Insulator-Based Dual-Gain Charge-Sensitive Pixel Detector for Low-Noise X-ray Imaging for Future Astronomical Satellite Missions. Sensors Sumeet Shrestha, Shoji Kawahito, Hiroki Kamehama, Syunta Nakanishi, Keita Yasutomi, Keiichiro Kagawa, Nobukazu Teranishi, Ayaki Takeda, Takeshi Go Tsuru, Ikuo Kurachi, Yasuo Arai
2018	J	`jnl`	A Time-Resolved Four-Tap Lock-In Pixel CMOS Image Sensor for Real-Time Fluorescence Lifetime Imaging Microscopy. IEEE J. Solid State Circuits Min-Woong Seo, Yuya Shirakawa, Yoshimasa Kawata, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
2018	—	`conf`	A Two-Tap NIR Lock-in Pixel CMOS Image Sensor with Background Light Cancelling Capability for Non-Contact Heart Rate Detection. VLSI Circuits Chen Cao, Yuya Shirakawa, Leyi Tan, Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Tomohiko Kosugi, Satoshi Aoyama, Nobukazu Teranishi, Norimichi Tsumura, Shoji Kawahito
2018	—	`conf`	Dual-Band Infrared Video-Based Measurement Using Pulse Wave Maps to Analyze Heart Rate Variability. CIC Ryota Mitsuhashi, Keiichiro Kagawa, Shoji Kawahito, Chawan Koopipat, Norimichi Tsumura
2018	J	`jnl`	Multi-Aperture-Based Probabilistic Noise Reduction of Random Telegraph Signal Noise and Photon Shot Noise in Semi-Photon-Counting Complementary-Metal-Oxide-Semiconductor Image Sensor. Sensors Haruki Ishida, Keiichiro Kagawa, Takashi Komuro, Bo Zhang, Min-Woong Seo, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito
2018	J	`jnl`	Noncontact pulse wave detection by two-band infrared video-based measurement on face without visible lighting. Artif. Life Robotics Ryota Mitsuhashi, Genki Okada, Koki Kurita, Keiichiro Kagawa, Shoji Kawahito, Chawan Koopipat, Norimichi Tsumura
2018	J	`jnl`	The Dynamic Photometric Stereo Method Using a Multi-Tap CMOS Image Sensor. Sensors Takuya Yoda, Hajime Nagahara, Rin-Ichiro Taniguchi, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
2017	—	`conf`	4.3 A programmable sub-nanosecond time-gated 4-tap lock-in pixel CMOS image sensor for real-time fluorescence lifetime imaging microscopy. ISSCC Min-Woong Seo, Yuya Shirakawa, Yuriko Masuda, Yoshimasa Kawata, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
2017	—	`conf`	A Lateral Electric Field charge Modulator with Bipolar-gates for Time-resolved Imaging. IMSE Yuki Morikawa, Keita Yasutomi, Shoma Imanishi, Taishi Takasawa, Keiichiro Kagawa, Nobukazu Teranishi, Shoji Kawahito
2017	B	`conf`	A gaze-preserving group video conference system using screen-embedded cameras. VRST Kazuki Kobayashi, Takashi Komuro, Bo Zhang, Keiichiro Kagawa, Shoji Kawahito
2017	J	`jnl`	Label-Free Biomedical Imaging Using High-Speed Lock-In Pixel Sensor for Stimulated Raman Scattering. Sensors Kamel Mars, Xing Lioe De, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa, Takahiro Yamada, Mamoru Hashimoto
2017	—	`conf`	Noncontact heart rate measurement using high sensitivity camera in low light environment. CIC Genki Okada, Keiichiro Kagawa, Shoji Kawahito, Norimichi Tsumura
2017	—	`conf`	RTS and photon shot noise reduction based on maximum likelihood estimate with multi-aperture optics and semi-photon-counting-level CMOS image sensors. IMSE Haruki Ishida, Keiichiro Kagawa, Min-Woong Seo, Takashi Komuro, Bo Zhang, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito
2017	—	`conf`	Two-Band Infrared Video-Based Measurement for Non-Contact Pulse Wave Detection on Face without Visible Lighting. CIC Ryota Mitsuhashi, Genki Okada, Koki Kurita, Keiichiro Kagawa, Shoji Kawahito, Chawan Koopipat, Norimichi Tsumura
2016	J	`jnl`	A 10 ps Time-Resolution CMOS Image Sensor With Two-Tap True-CDS Lock-In Pixels for Fluorescence Lifetime Imaging. IEEE J. Solid State Circuits Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Yoshimasa Kawata, Nobukazu Teranishi, Zhuo Li, Izhal Abdul Halin, Shoji Kawahito
2016	J	`jnl`	A Stimulated Raman Scattering CMOS Pixel Using a High-Speed Charge Modulator and Lock-in Amplifier. Sensors Xing Lioe De, Kamel Mars, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa, Takahiro Yamada, Mamoru Hashimoto
2016	—	`conf`	A Time-of-Flight CMOS Range Image Sensor Using 4-Tap Output Pixels with Lateral-Electric-Field Control. IMSE Taichi Kasigao, Sang-Man Han, Hanh Trang, Taishi Takasawa, Satoshi Aoyama, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2016	—	`conf`	A high time-resolution two-tap CMOS lock-in pixel image sensor for time-resolved measurements and its applications. BioCAS Min-Woong Seo, Yuya Shirakawa, Keiichiro Kagawa, Keita Yasutomi, Yoshimasa Kawata, Nobukazu Teranishi, Shoji Kawahito
2016	—	`conf`	Design, implementation and evaluation of a TOF range image sensor using multi-tap lock-in pixels with cascaded charge draining and modulating gates. IMSE Hanh Trang, Taichi Kasugai, Keigo Isobe, Sang-Man Han, Taichi Takasawa, Xing Lioe De, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2016	B	`conf`	Dynamic photometric stereo method using multi-tap CMOS image sensor. ICPR Takuya Yoda, Hajime Nagahara, Rin-Ichiro Taniguchi, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
2015	—	`conf`	11.2 A 10.8ps-time-resolution 256×512 image sensor with 2-Tap true-CDS lock-in pixels for fluorescence lifetime imaging. ISSCC Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Taishi Takasawa, Yoshimasa Kawata, Nobukazu Teranishi, Zhuo Li, Izhal Abdul Halin, Shoji Kawahito
2015	—	`conf`	6.4 Single-shot 200Mfps 5×3-aperture compressive CMOS imager. ISSCC Futa Mochizuki, Keiichiro Kagawa, Shin-ichiro Okihara, Min-Woong Seo, Bo Zhang, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito
2015	—	`conf`	A high-sensitivity 2x2 multi-aperture color camera based on selective averaging. IMSE Bo Zhang, Keiichiro Kagawa, Taishi Takasawa, Min-Woong Seo, Keita Yasutomi, Shoji Kawahito
2015	—	`conf`	Spectral study of metabolism-based autofluorescence and white-light reflectance for endoscopic tumor imaging. EMBC Masashi Ozaki, Keiichiro Kagawa, Hidenobu Arimoto, Yoko Kominami, Yoji Sanomura, Shigeto Yoshida, Min-Woong Seo, Shoji Kawahito, Shinji Tanaka
2014	—	`conf`	7.4 A 413×240-pixel sub-centimeter resolution Time-of-Flight CMOS image sensor with in-pixel background canceling using lateral-electric-field charge modulators. ISSCC Sang-Man Han, Taishi Takasawa, Tomoyuki Akahori, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2014	—	`conf`	7.5 A 0.3mm-resolution Time-of-Flight CMOS range imager with column-gating clock-skew calibration. ISSCC Keita Yasutomi, Takahiro Usui, Sang-Man Han, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito
2014	—	`conf`	A CMOS time-of-flight range image sensor using draining only modulation structure. IMSE Sang-Man Han, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2014	—	`conf`	A high fill-factor low dark leakage CMOS image sensor with shared-pixel design. IMSE Min-Woong Seo, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2014	—	`conf`	A stimulated Raman scattering imager using high-speed lateral electric field modulator and lock-in pixels amplifiers. IMSE Kamel Mars, Beak Guseul, Sang-Man Han, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Mamoru Hashimoto, Shoji Kawahito
2014	—	`conf`	A time-resolved image sensor for tubeless streak cameras. IMSE Keita Yasutomi, Sang-Man Han, Min-Woong Seo, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito
2014	—	`conf`	An indirect time-of-flight measurement technique for sub-mm range resolution using impulse photocurrent response. IMSE Takahiro Usui, Keita Yasutomi, Sang-Man Han, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito
2014	J	`jnl`	Image-sensor-based visible light communication for automotive applications. IEEE Commun. Mag. Takaya Yamazato, Isamu Takai, Hiraku Okada, Toshiaki Fujii, Tomohiro Yendo, Shintaro Arai, Michinori Andoh, Tomohisa Harada, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2014	—	`conf`	Lock-in pixels readout circuit using a high speed lateral electric field modulator with differential charge accumulation for stimulated Raman scattering imager. NEWCAS Kamel Mars, Ken Egawa, Xing Lioe De, Sang-Man Han, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Mamoru Hashimoto, Shoji Kawahito
2014	J	`jnl`	RTS Noise and Dark Current White Defects Reduction Using Selective Averaging Based on a Multi-Aperture System. Sensors Bo Zhang, Keiichiro Kagawa, Taishi Takasawa, Min-Woong Seo, Keita Yasutomi, Shoji Kawahito
2013	—	`conf`	A custom CMOS imager for multi-beam laser scanning microscopy and an improvement of scanning speed. Sensors, Cameras, and Systems for Industrial and Scientific Applications Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito
2013	J	`jnl`	Design of a Digitally Error-Corrected Pipeline ADC Using Incomplete Settling of Pre-Charged Residue Amplifiers. IEICE Trans. Electron. Sung-Wook Jun, Lianghua Miao, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2013	J	`jnl`	RTS noise reduction of CMOS image sensors using amplifier-selection pixels. IEICE Electron. Express Mohd Amrallah Mustafa, Min-Woong Seo, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa
2013	J	`jnl`	Realization of Secure Ambient Wireless Network System Based on Spatially Distributed Ciphering Function. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Masashi Okada, Masahide Hatanaka, Keiichiro Kagawa, Shinichi Miyamoto
2012	—	`conf`	A CMOS imager using focal-plane pinhole effect for confocal multibeam scanning microscopy. Sensors, Cameras, and Systems for Industrial and Scientific Applications Min-Woong Seo, An Wang, Zhuo Li, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2012	J	`jnl`	A distributed ramp signal generator of column-parallel single-slope ADCs for CMOS image sensors. IEICE Electron. Express Kaita Imai, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito
2012	A*	`conf`	Ambient Suite: Room-shaped information environment for interpersonal communication. VR Kazuyuki Fujita, Yuichi Itoh, Hiroyuki Ohsaki, Naoaki Ono, Keiichiro Kagawa, Kazuki Takashima, Sho Tsugawa, Kosuke Nakajima, Yusuke Hayashi, Fumio Kishino
2012	A*	`conf`	Toward large-scale and dynamic social network analysis with heterogeneous sensors in ambient environment. VR Sho Tsugawa, Hiroyuki Ohsaki, Yuichi Itoh, Naoaki Ono, Keiichiro Kagawa, Kazuki Takashima, Makoto Imase
2012	—	`conf`	Variable field-of-view visible and near-infrared polarization compound-eye endoscope. EMBC Keiichiro Kagawa, Rui Shogenji, Eiji Tanaka, Kenji Yamada, Shoji Kawahito, Jun Tanida
2011	—	`conf`	Ambient Suite: enhancing communication among multiple participants. Advances in Computer Entertainment Technology Kazuyuki Fujita, Yuichi Itoh, Hiroyuki Ohsaki, Naoaki Ono, Keiichiro Kagawa, Kazuki Takashima, Sho Tsugawa, Kosuke Nakajima, Yusuke Hayashi, Fumio Kishino
2011	—	`conf`	Quasi-realtime social network construction with heterogeneous sensors in ambient environment. Advances in Computer Entertainment Technology Sho Tsugawa, Hiroyuki Ohsaki, Yuichi Itoh, Naoaki Ono, Keiichiro Kagawa, Kazuki Takashima, Makoto Imase
2008	—	`conf`	Demonstration of Wide-angle Beam Steering Optics in Wavelength-division-multiplexing Indoor Optical Wireless LAN with Dedicated CMOS Imager. BIONETICS Keiichiro Kagawa, Jun Tanida
2007	J	`jnl`	A low-voltage PWM CMOS imager with small pixel size using an in-pixel gate-common comparator. IEICE Electron. Express Keiichiro Kagawa, Sanshiro Shishido, Tatsuya Sasaki, Itsuki Nagahata, Masahiro Nunoshita, Jun Ohta
2007	C	`conf`	A multi-microchip retinal stimulator for in vitro / in vivo experiments. ISCAS Jun Ohta, Takahashi Tokuda, Keiichiro Kagawa, Akihiro Uehara, Yasuo Terasawa, Kazuaki Nakauchi, Takashi Fujikado, Yasuo Tano
2007	J	`jnl`	Preliminary Demonstration of 1.0 V CMOS Imager with Semi-Pixel-Level ADC Based on Pulse-Width-Modulation Pixel Readout. IEICE Trans. Electron. Keiichiro Kagawa, Makoto Shouho, Kazuo Hashiguchi, Masahiro Nunoshita, Jun Ohta
2006	—	`conf`	A multi-chip-architecture based flexible stimulation device for retinal prosthesis with a flip-chip packaging technique. EMBC Takashi Tokuda, Masayuki Kawada, Sachie Sugitani, Mari Taniyama, Akihiro Uehara, Keiichiro Kagawa, Masahiro Nunoshita, Jun Ohta
2006	C	`conf`	An optical and potential dual-image CMOS sensor for on-chip neural and DNA imaging applications. ISCAS Takahashi Tokuda, David C. Ng, Akio Yamamoto, Keiichiro Kagawa, Masahiro Nunoshita, Jun Ohta
2006	J	`jnl`	Pulse frequency modulation based CMOS image sensor for subretinal stimulation. IEEE Trans. Circuits Syst. II Express Briefs David C. Ng, Tetsuo Furumiya, Koichi Yasuoka, Akihiro Uehara, Keiichiro Kagawa, Takashi Tokuda, Masahiro Nunoshita, Jun Ohta
2006	C	`conf`	Toward 1000-ch electrode array based on distributed microchip architecture for retinal prosthesis. ISCAS Jun Ohta, Takahashi Tokuda, Keiichiro Kagawa, Akihiro Uehara, Yasuo Terasawa, Kenzo Shodo, Takashi Fujikado, Yasuo Tano
2005	—	`conf`	Pulse modulation CMOS image sensor for bio-fluorescence imaging applications. ISCAS (4) Jun Ohta, Takahashi Tokuda, Keiichiro Kagawa, Masahiro Nunoshita, Sadao Shiosaka
2005	—	`conf`	Retinal prosthesis device based on pulse-frequency-modulation vision chip. ISCAS (3) Jun Ohta, Keiichiro Kagawa, Takashi Tokuda, Masahiro Nunoshita
2004	J	`jnl`	A high-sensitive digital photosensor using MOS interface-trap charge pumping. IEICE Electron. Express Akihiro Uehara, Keiichiro Kagawa, Takashi Tokuda, Jun Ohta, Masahiro Nunoshita
2004	—	`conf`	A retinal prosthetic device using a pulse-frequency-modulation CMOS image sensor. ASP-DAC Jun Ohta, Tetsuo Furumiya, David C. Ng, Akihiro Uehara, Keiichiro Kagawa, Takashi Tokuda, Masahiro Nunoshita
2004	—	`conf`	An image-sensor-based optical receiver fabricated in a standard 0.35-µm CMOS technology for free-space optical communications. ASP-DAC Keiichiro Kagawa, Tomoaki Kawakami, Hiroaki Asazu, Takashi Ikeuchi, Akiko Fujiuchi, Jun Ohta, Masahiro Nunoshita
2004	—	`conf`	Improvement of saturation characteristics of a frequency-demodulation CMOS image sensor. ASP-DAC Jun Ohta, Keiichiro Kagawa, Koichi Yamamoto, Takashi Tokuda, Yu Oya, Masahiro Nunoshita
2000	—	`conf`	Architecture Description and Prototype Demonstration of Optoelectronic Parallel-Matching Architecture. IPDPS Workshops Keiichiro Kagawa, Kouichi Nitta, Yusuke Ogura, Jun Tanida, Yoshiki Ichioka
1999	J	`jnl`	Detection of water amount on the surface of glass fibers using the transient leakage current of static electricity. IEEE Trans. Instrum. Meas. Keiichiro Kagawa, Yutaka Sugino, Katsuhiko Kagami, Masahiro Ueda