A 15b power-efficient pipeline A/D converter using non-slewing closed-loop amplifiers. - Shoji Kawahito; Kazutaka Honda; Zheng Liu; Keita Yasutomi; Shinya Itoh (CICC, 2008)

A CMOS image sensor for 10Mb/s 70m-range LED-based spatial optical communication. - Shinya Itoh; Isamu Takai; M. Shakowat Zaman Sarker; Moeta Hamai; Keita Yasutomi; Michinori Andoh; Shoji Kawahito (ISSCC, 2010)

A 2.7e- temporal noise 99.7% shutter efficiency 92dB dynamic range CMOS image sensor with dual global shutter pixels. - Keita Yasutomi; Shinya Itoh; Shoji Kawahito (ISSCC, 2010)

A CMOS image sensor with draining only modulation pixels for fluorescence lifetime imaging. - Zhuo Li; Keita Yasutomi; Taishi Takasawa; Shinya Itoh; Shoji Kawahito (Sensors, Cameras, and Systems for Industrial, Scientific, and Consumer Applications, 2011)

Design and Implementation of A CMOS Light Pulse Receiver Cell Array for Spatial Optical Communications. - M. Shakowat Zaman Sarker; Shinya Itoh; Moeta Hamai; Isamu Takai; Michinori Andoh; Keita Yasutomi; Shoji Kawahito (Sensors, 2011)

A CMOS imager using focal-plane pinhole effect for confocal multibeam scanning microscopy. - Min-Woong Seo; An Wang; Zhuo Li; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (Sensors, Cameras, and Systems for Industrial and Scientific Applications, 2012)

A distributed ramp signal generator of column-parallel single-slope ADCs for CMOS image sensors. - Kaita Imai; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IEICE Electron. Express, 2012)

A Low-Noise High Intrascene Dynamic Range CMOS Image Sensor With a 13 to 19b Variable-Resolution Column-Parallel Folding-Integration/Cyclic ADC. - Min-Woong Seo; Sungho Suh; Tetsuya Iida; Taishi Takasawa; Keigo Isobe; Takashi Watanabe 003; Shinya Itoh; Keita Yasutomi; Shoji Kawahito (IEEE J. Solid State Circuits, 2012)

A custom CMOS imager for multi-beam laser scanning microscopy and an improvement of scanning speed. - Min-Woong Seo; Keiichiro Kagawa; Keita Yasutomi; Shoji Kawahito (Sensors, Cameras, and Systems for Industrial and Scientific Applications, 2013)

RTS noise reduction of CMOS image sensors using amplifier-selection pixels. - Mohd Amrallah Mustafa; Min-Woong Seo; Shoji Kawahito; Keita Yasutomi; Keiichiro Kagawa (IEICE Electron. Express, 2013)

Design of a Digitally Error-Corrected Pipeline ADC Using Incomplete Settling of Pre-Charged Residue Amplifiers. - Sung-Wook Jun; Lianghua Miao; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IEICE Trans. Electron., 2013)

A CMOS time-of-flight range image sensor using draining only modulation structure. - Sang-Man Han; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IMSE, 2014)

A stimulated Raman scattering imager using high-speed lateral electric field modulator and lock-in pixels amplifiers. - Kamel Mars; Beak Guseul; Sang-Man Han; Taishi Takasawa; Keita Yasutomi; Keiichiro Kagawa; Mamoru Hashimoto; Shoji Kawahito (IMSE, 2014)

A high fill-factor low dark leakage CMOS image sensor with shared-pixel design. - Min-Woong Seo; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IMSE, 2014)

An indirect time-of-flight measurement technique for sub-mm range resolution using impulse photocurrent response. - Takahiro Usui; Keita Yasutomi; Sang-Man Han; Taishi Takasawa; Keiichiro Kagawa; Shoji Kawahito (IMSE, 2014)

A time-resolved image sensor for tubeless streak cameras. - Keita Yasutomi; Sang-Man Han; Min-Woong Seo; Taishi Takasawa; Keiichiro Kagawa; Shoji Kawahito (IMSE, 2014)

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. - Sang-Man Han; Taishi Takasawa; Tomoyuki Akahori; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (ISSCC, 2014)

7.5 A 0.3mm-resolution Time-of-Flight CMOS range imager with column-gating clock-skew calibration. - Keita Yasutomi; Takahiro Usui; Sang-Man Han; Taishi Takasawa; Keiichiro Kagawa; Shoji Kawahito (ISSCC, 2014)

Lock-in pixels readout circuit using a high speed lateral electric field modulator with differential charge accumulation for stimulated Raman scattering imager. - Kamel Mars; Ken Egawa; Xing Lioe De; Sang-Man Han; Taishi Takasawa; Keita Yasutomi; Keiichiro Kagawa; Mamoru Hashimoto; Shoji Kawahito (NEWCAS, 2014)

Image-sensor-based visible light communication for automotive applications. - Takaya Yamazato; Isamu Takai; Hiraku Okada; Toshiaki Fujii; Tomohiro Yendo; Shintaro Arai; Michinori Andoh; Tomohisa Harada; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IEEE Commun. Mag., 2014)

Extremely small differential non-linearity in a DMOS capacitor based cyclic ADC for CMOS image sensors. - Zhiheng Wei; Keita Yasutomi; Shoji Kawahito (IEICE Electron. Express, 2014)

RTS Noise and Dark Current White Defects Reduction Using Selective Averaging Based on a Multi-Aperture System. - Bo Zhang; Keiichiro Kagawa; Taishi Takasawa; Min-Woong Seo; Keita Yasutomi; Shoji Kawahito (Sensors, 2014)

A high-sensitivity 2x2 multi-aperture color camera based on selective averaging. - Bo Zhang; Keiichiro Kagawa; Taishi Takasawa; Min-Woong Seo; Keita Yasutomi; Shoji Kawahito (IMSE, 2015)

6.4 Single-shot 200Mfps 5×3-aperture compressive CMOS imager. - Futa Mochizuki; Keiichiro Kagawa; Shin-ichiro Okihara; Min-Woong Seo; Bo Zhang; Taishi Takasawa; Keita Yasutomi; Shoji Kawahito (ISSCC, 2015)

11.2 A 10.8ps-time-resolution 256×512 image sensor with 2-Tap true-CDS lock-in pixels for fluorescence lifetime imaging. - Min-Woong Seo; Keiichiro Kagawa; Keita Yasutomi; Taishi Takasawa; Yoshimasa Kawata; Nobukazu Teranishi; Zhuo Li; Izhal Abdul Halin; Shoji Kawahito (ISSCC, 2015)

A digital calibration technique for folding-integration/cyclic cascaded ADCs. - Tongxi Wang; Amin M. R. Khandaker; Keita Yasutomi; Shoji Kawahito (MWSCAS, 2015)

A column-parallel clock skew self-calibration circuit for time-resolved CMOS image sensors. - Lianghua Miao; Keita Yasutomi; Shoma Imanishi; Shoji Kawahito (IEICE Electron. Express, 2015)

A high time-resolution two-tap CMOS lock-in pixel image sensor for time-resolved measurements and its applications. - Min-Woong Seo; Yuya Shirakawa; Keiichiro Kagawa; Keita Yasutomi; Yoshimasa Kawata; Nobukazu Teranishi; Shoji Kawahito (BioCAS, 2016)

A Time-of-Flight CMOS Range Image Sensor Using 4-Tap Output Pixels with Lateral-Electric-Field Control. - Taichi Kasigao; Sang-Man Han; Hanh Trang; Taishi Takasawa; Satoshi Aoyama; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IMSE, 2016)

Design, implementation and evaluation of a TOF range image sensor using multi-tap lock-in pixels with cascaded charge draining and modulating gates. - Hanh Trang; Taichi Kasugai; Keigo Isobe; Sang-Man Han; Taichi Takasawa; Xing Lioe De; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IMSE, 2016)

A 10 ps Time-Resolution CMOS Image Sensor With Two-Tap True-CDS Lock-In Pixels for Fluorescence Lifetime Imaging. - Min-Woong Seo; Keiichiro Kagawa; Keita Yasutomi; Yoshimasa Kawata; Nobukazu Teranishi; Zhuo Li; Izhal Abdul Halin; Shoji Kawahito (IEEE J. Solid State Circuits, 2016)

A Stimulated Raman Scattering CMOS Pixel Using a High-Speed Charge Modulator and Lock-in Amplifier. - Xing Lioe De; Kamel Mars; Shoji Kawahito; Keita Yasutomi; Keiichiro Kagawa; Takahiro Yamada; Mamoru Hashimoto (Sensors, 2016)

RTS and photon shot noise reduction based on maximum likelihood estimate with multi-aperture optics and semi-photon-counting-level CMOS image sensors. - Haruki Ishida; Keiichiro Kagawa; Min-Woong Seo; Takashi Komuro; Bo Zhang; Taishi Takasawa; Keita Yasutomi; Shoji Kawahito (IMSE, 2017)

A Lateral Electric Field charge Modulator with Bipolar-gates for Time-resolved Imaging. - Yuki Morikawa; Keita Yasutomi; Shoma Imanishi; Taishi Takasawa; Keiichiro Kagawa; Nobukazu Teranishi; Shoji Kawahito (IMSE, 2017)

4.3 A programmable sub-nanosecond time-gated 4-tap lock-in pixel CMOS image sensor for real-time fluorescence lifetime imaging microscopy. - Min-Woong Seo; Yuya Shirakawa; Yuriko Masuda; Yoshimasa Kawata; Keiichiro Kagawa; Keita Yasutomi; Shoji Kawahito (ISSCC, 2017)

A 19-bit column-parallel folding-integration/cyclic cascaded ADC with a pre-charging technique for CMOS image sensors. - Tongxi Wang; Min-Woong Seo; Keita Yasutomi; Shoji Kawahito (IEICE Electron. Express, 2017)

Label-Free Biomedical Imaging Using High-Speed Lock-In Pixel Sensor for Stimulated Raman Scattering. - Kamel Mars; Xing Lioe De; Shoji Kawahito; Keita Yasutomi; Keiichiro Kagawa; Takahiro Yamada; Mamoru Hashimoto (Sensors, 2017)

A Distance Measurement Method Using A Time-of-Flight CMOS Range Image Sensor with 4-Tap Output Pixels and Multiple Time-Windows. - Kohei Yamada; Komazawa Akihito; Taishi Takasawa; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IMSE, 2018)

A Two-Tap NIR Lock-in Pixel CMOS Image Sensor with Background Light Cancelling Capability for Non-Contact Heart Rate Detection. - Chen Cao; Yuya Shirakawa; Leyi Tan; Min-Woong Seo; Keiichiro Kagawa; Keita Yasutomi; Tomohiko Kosugi; Satoshi Aoyama; Nobukazu Teranishi; Norimichi Tsumura; Shoji Kawahito (VLSI Circuits, 2018)

A Time-Resolved Four-Tap Lock-In Pixel CMOS Image Sensor for Real-Time Fluorescence Lifetime Imaging Microscopy. - Min-Woong Seo; Yuya Shirakawa; Yoshimasa Kawata; Keiichiro Kagawa; Keita Yasutomi; Shoji Kawahito (IEEE J. Solid State Circuits, 2018)

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. - Haruki Ishida; Keiichiro Kagawa; Takashi Komuro; Bo Zhang; Min-Woong Seo; Taishi Takasawa; Keita Yasutomi; Shoji Kawahito (Sensors, 2018)

A Low-Noise X-ray Astronomical Silicon-On-Insulator Pixel Detector Using a Pinned Depleted Diode Structure. - Hiroki Kamehama; Shoji Kawahito; Sumeet Shrestha; Syunta Nakanishi; Keita Yasutomi; Ayaki Takeda; Takeshi Go Tsuru; Yasuo Arai (Sensors, 2018)

A Silicon-on-Insulator-Based Dual-Gain Charge-Sensitive Pixel Detector for Low-Noise X-ray Imaging for Future Astronomical Satellite Missions. - Sumeet Shrestha; Shoji Kawahito; Hiroki Kamehama; Syunta Nakanishi; Keita Yasutomi; Keiichiro Kagawa; Nobukazu Teranishi; Ayaki Takeda; Takeshi Go Tsuru; Ikuo Kurachi; Yasuo Arai (Sensors, 2018)

The Dynamic Photometric Stereo Method Using a Multi-Tap CMOS Image Sensor. - Takuya Yoda; Hajime Nagahara; Rin-Ichiro Taniguchi; Keiichiro Kagawa; Keita Yasutomi; Shoji Kawahito (Sensors, 2018)

A Time-Resolved NIR Lock-In Pixel CMOS Image Sensor With Background Cancelling Capability for Remote Heart Rate Detection. - 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 (IEEE J. Solid State Circuits, 2019)

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. - Keita Yasutomi; Yushi Okura; Keiichiro Kagawa; Shoji Kawahito (IEEE J. Solid State Circuits, 2019)

A Wide Dynamic Range CMOS Image Sensor with a Charge Splitting Gate and Two Storage Diodes. - Minho Lee 001; Min-Woong Seo; Juyeong Kim; Keita Yasutomi; Keiichiro Kagawa; Jang-Kyoo Shin; Shoji Kawahito (Sensors, 2019)

Plasmonic Color Filter Array with High Color Purity for CMOS Image Sensors. - Atsutaka Miyamichi; Atsushi Ono; Keiichiro Kagawa; Keita Yasutomi; Shoji Kawahito (Sensors, 2019)

Simulfocus imaging: quasi-simultaneous multi-focus imaging using Lock-in Pixel imager and TAG lens. - Hiromasa Oku; Kazuki Yamato; Yusuke Tanaka; Keita Yasutomi; Shoji Kawahito (SIGGRAPH Emerging Technologies, 2020)

A Time-of-Flight Range Sensor Using Four-Tap Lock-In Pixels with High near Infrared Sensitivity for LiDAR Applications. - Sanggwon Lee; Keita Yasutomi; Masato Morita; Hodaka Kawanishi; Shoji Kawahito (Sensors, 2020)

An 8-Tap CMOS Lock-In Pixel Image Sensor for Short-Pulse Time-of-Flight Measurements. - Yuya Shirakawa; Keita Yasutomi; Keiichiro Kagawa; Satoshi Aoyama; Shoji Kawahito (Sensors, 2020)

High-Linearity High-Resolution Time-of-Flight Linear-Array Digital Image Sensor Using Time-Domain Feedback. - Juyeong Kim; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (Sensors, 2021)

A 38µm Range Precision Time-of-Flight CMOS Range Line Imager with Gating Driver Jitter Reduction Using Charge-Injection Pseudo Photocurrent Reference. - Keita Yasutomi; Tatsuki Furuhashi; Koki Sagawa; Taishi Takasawa; Keiichiro Kagawa; Shoji Kawahito (ISSCC, 2022)

Lock-in Pixel Based Time-of-Flight Range Imagers: An Overview. - Keita Yasutomi; Shoji Kawahito (IEICE Trans. Electron., 2022)

Resolving Multi-Path Interference in Compressive Time-of-Flight Depth Imaging with a Multi-Tap Macro-Pixel Computational CMOS Image Sensor. - Masaya Horio; Yu Feng; Tomoya Kokado; Taishi Takasawa; Keita Yasutomi; Shoji Kawahito; Takashi Komuro; Hajime Nagahara; Keiichiro Kagawa (Sensors, 2022)

A Dual-Mode 303-Megaframes-per-Second Charge-Domain Time-Compressive Computational CMOS Image Sensor. - Keiichiro Kagawa; Masaya Horio; Anh Ngoc Pham; Thoriq Ibrahim; Shin-ichiro Okihara; Tatsuki Furuhashi; Taishi Takasawa; Keita Yasutomi; Shoji Kawahito; Hajime Nagahara (Sensors, 2022)

Development of a Current Injection - Type Impedance Measurement System for Monitoring Soil Water Content and Ion Concentration. - Ryuki Shigemasu; Yuki Teraoka; Satoshi Ota; Harutoyo Hirano; Keita Yasutomi; Shoji Kawahito; Masato Futagawa (Sensors, 2022)

A Time-of-Flight Image Sensor Using 8-Tap P-N Junction Demodulator Pixels. - Ryosuke Miyazawa; Yuya Shirakawa; Kamel Mars; Keita Yasutomi; Keiichiro Kagawa; Satoshi Aoyama; Shoji Kawahito (Sensors, 2023)

An SOI-Based Lock-in Pixel with a Shallow Buried Channel for Reducing Parasitic Light Sensitivity and Improving Modulation Contrast. - Tatsuya Kobayashi; Keita Yasutomi; Naoki Takada; Shoji Kawahito (IEICE Trans. Electron., 2023)

Depth Quality Improvement with a 607 MHz Time-Compressive Computational Pseudo-dToF CMOS Image Sensor. - Anh Ngoc Pham; Thoriq Ibrahim; Keita Yasutomi; Shoji Kawahito; Hajime Nagahara; Keiichiro Kagawa (Sensors, 2023)

Simulation Methods for Lock-In Pixels Considering Gating Driver's Response. - Ryosuke Suzuki; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IEEE SENSORS, 2024)

Single-Shot Efficient Depth Imaging Based on Time-Compressive CMOS Image Sensor. - Michitaka Yoshida; Daisuke Hayashi; De Xing Lioe; Keita Yasutomi; Shoji Kawahito; Keiichiro Kagawa; Hajime Nagahara (IEEE SENSORS, 2024)