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2020 – today
- 2023
[j32]Tatsuya Kobayashi, Keita Yasutomi, Naoki Takada, Shoji Kawahito:
An SOI-Based Lock-in Pixel with a Shallow Buried Channel for Reducing Parasitic Light Sensitivity and Improving Modulation Contrast. IEICE Trans. Electron. 106(10): 538-545 (2023)- [j31]Ryosuke Miyazawa, Yuya Shirakawa
, Kamel Mars, Keita Yasutomi, Keiichiro Kagawa, Satoshi Aoyama, Shoji Kawahito:
A Time-of-Flight Image Sensor Using 8-Tap P-N Junction Demodulator Pixels. Sensors 23(8): 3987 (2023) - [j30]Anh Ngoc Pham, Thoriq Ibrahim, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara, Keiichiro Kagawa:
Depth Quality Improvement with a 607 MHz Time-Compressive Computational Pseudo-dToF CMOS Image Sensor. Sensors 23(23): 9332 (2023) - 2022
- [j29]Keita Yasutomi, Shoji Kawahito:
Lock-in Pixel Based Time-of-Flight Range Imagers: An Overview. IEICE Trans. Electron. 105-C(7): 301-315 (2022) - [j28]Keiichiro Kagawa, Masaya Horio, Anh Ngoc Pham, Thoriq Ibrahim, Shin-ichiro Okihara, Tatsuki Furuhashi, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara:
A Dual-Mode 303-Megaframes-per-Second Charge-Domain Time-Compressive Computational CMOS Image Sensor. Sensors 22(5): 1953 (2022) - [j27]Masaya Horio, Yu Feng, Tomoya Kokado, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito, Takashi Komuro, Hajime Nagahara, Keiichiro Kagawa:
Resolving Multi-Path Interference in Compressive Time-of-Flight Depth Imaging with a Multi-Tap Macro-Pixel Computational CMOS Image Sensor. Sensors 22(7): 2442 (2022) - [j26]Ryuki Shigemasu, Yuki Teraoka, Satoshi Ota, Harutoyo Hirano, Keita Yasutomi, Shoji Kawahito, Masato Futagawa:
Development of a Current Injection - Type Impedance Measurement System for Monitoring Soil Water Content and Ion Concentration. Sensors 22(9): 3509 (2022) - [c29]Keita Yasutomi, Tatsuki Furuhashi, Koki Sagawa, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito:
A 38µm Range Precision Time-of-Flight CMOS Range Line Imager with Gating Driver Jitter Reduction Using Charge-Injection Pseudo Photocurrent Reference. ISSCC 2022: 100-102 - 2021
- [j25]Juyeong Kim, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
High-Linearity High-Resolution Time-of-Flight Linear-Array Digital Image Sensor Using Time-Domain Feedback. Sensors 21(2): 454 (2021) - 2020
- [j24]Sanggwon Lee, Keita Yasutomi, Masato Morita, Hodaka Kawanishi, Shoji Kawahito:
A Time-of-Flight Range Sensor Using Four-Tap Lock-In Pixels with High near Infrared Sensitivity for LiDAR Applications. Sensors 20(1): 116 (2020) - [j23]Yuya Shirakawa, Keita Yasutomi, Keiichiro Kagawa, Satoshi Aoyama, Shoji Kawahito:
An 8-Tap CMOS Lock-In Pixel Image Sensor for Short-Pulse Time-of-Flight Measurements. Sensors 20(4): 1040 (2020) - [c28]Hiromasa Oku, Kazuki Yamato, Yusuke Tanaka, Keita Yasutomi, Shoji Kawahito:
Simulfocus imaging: quasi-simultaneous multi-focus imaging using Lock-in Pixel imager and TAG lens. SIGGRAPH Emerging Technologies 2020: 18:1-18:2
2010 – 2019
- 2019
- [j22]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:
A Time-Resolved NIR Lock-In Pixel CMOS Image Sensor With Background Cancelling Capability for Remote Heart Rate Detection. IEEE J. Solid State Circuits 54(4): 978-991 (2019) - [j21]Keita Yasutomi, Yushi Okura, Keiichiro Kagawa, Shoji Kawahito:
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 54(8): 2291-2303 (2019) - [j20]Atsutaka Miyamichi, Atsushi Ono, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito:
Plasmonic Color Filter Array with High Color Purity for CMOS Image Sensors. Sensors 19(8): 1750 (2019) - [j19]Minho Lee, Min-Woong Seo, Juyeong Kim, Keita Yasutomi, Keiichiro Kagawa, Jang-Kyoo Shin, Shoji Kawahito:
A Wide Dynamic Range CMOS Image Sensor with a Charge Splitting Gate and Two Storage Diodes. Sensors 19(13): 2904 (2019) - 2018
- [j18]Min-Woong Seo, Yuya Shirakawa, Yoshimasa Kawata, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito:
A Time-Resolved Four-Tap Lock-In Pixel CMOS Image Sensor for Real-Time Fluorescence Lifetime Imaging Microscopy. IEEE J. Solid State Circuits 53(8): 2319-2330 (2018) - [j17]Hiroki Kamehama, Shoji Kawahito, Sumeet Shrestha, Syunta Nakanishi, Keita Yasutomi, Ayaki Takeda, Takeshi Go Tsuru, Yasuo Arai:
A Low-Noise X-ray Astronomical Silicon-On-Insulator Pixel Detector Using a Pinned Depleted Diode Structure. Sensors 18(1): 27 (2018) - [j16]Takuya Yoda, Hajime Nagahara, Rin-Ichiro Taniguchi, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito:
The Dynamic Photometric Stereo Method Using a Multi-Tap CMOS Image Sensor. Sensors 18(3): 786 (2018) - [j15]Haruki Ishida, Keiichiro Kagawa, Takashi Komuro, Bo Zhang, Min-Woong Seo, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito:
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 18(4): 977 (2018) - [j14]Sumeet Shrestha, Shoji Kawahito, Hiroki Kamehama, Syunta Nakanishi, Keita Yasutomi, Keiichiro Kagawa, Nobukazu Teranishi, Ayaki Takeda, Takeshi Go Tsuru, Ikuo Kurachi, Yasuo Arai:
A Silicon-on-Insulator-Based Dual-Gain Charge-Sensitive Pixel Detector for Low-Noise X-ray Imaging for Future Astronomical Satellite Missions. Sensors 18(6): 1789 (2018) - [c27]Kohei Yamada, Komazawa Akihito, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
A Distance Measurement Method Using A Time-of-Flight CMOS Range Image Sensor with 4-Tap Output Pixels and Multiple Time-Windows. IMSE 2018: 1-4 - [c26]Chen Cao, Yuya Shirakawa, Leyi Tan, Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Tomohiko Kosugi, Satoshi Aoyama, Nobukazu Teranishi, Norimichi Tsumura, Shoji Kawahito:
A Two-Tap NIR Lock-in Pixel CMOS Image Sensor with Background Light Cancelling Capability for Non-Contact Heart Rate Detection. VLSI Circuits 2018: 75-76 - 2017
- [j13]Tongxi Wang, Min-Woong Seo, Keita Yasutomi, Shoji Kawahito:
A 19-bit column-parallel folding-integration/cyclic cascaded ADC with a pre-charging technique for CMOS image sensors. IEICE Electron. Express 14(2): 20161199 (2017) - [j12]Kamel Mars, Xing Lioe De, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa, Takahiro Yamada, Mamoru Hashimoto:
Label-Free Biomedical Imaging Using High-Speed Lock-In Pixel Sensor for Stimulated Raman Scattering. Sensors 17(11): 2581 (2017) - [c25]Yuki Morikawa, Keita Yasutomi, Shoma Imanishi, Taishi Takasawa, Keiichiro Kagawa, Nobukazu Teranishi, Shoji Kawahito:
A Lateral Electric Field charge Modulator with Bipolar-gates for Time-resolved Imaging. IMSE 2017: 64-67 - [c24]Haruki Ishida, Keiichiro Kagawa, Min-Woong Seo, Takashi Komuro, Bo Zhang, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito:
RTS and photon shot noise reduction based on maximum likelihood estimate with multi-aperture optics and semi-photon-counting-level CMOS image sensors. IMSE 2017: 80-83 - [c23]Min-Woong Seo, Yuya Shirakawa, Yuriko Masuda, Yoshimasa Kawata, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito:
4.3 A programmable sub-nanosecond time-gated 4-tap lock-in pixel CMOS image sensor for real-time fluorescence lifetime imaging microscopy. ISSCC 2017: 70-71 - 2016
- [j11]Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Yoshimasa Kawata, Nobukazu Teranishi, Zhuo Li, Izhal Abdul Halin, Shoji Kawahito:
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 51(1): 141-154 (2016) - [j10]Xing Lioe De, Kamel Mars, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa, Takahiro Yamada, Mamoru Hashimoto:
A Stimulated Raman Scattering CMOS Pixel Using a High-Speed Charge Modulator and Lock-in Amplifier. Sensors 16(4): 532 (2016) - [c22]Min-Woong Seo, Yuya Shirakawa, Keiichiro Kagawa, Keita Yasutomi, Yoshimasa Kawata, Nobukazu Teranishi, Shoji Kawahito:
A high time-resolution two-tap CMOS lock-in pixel image sensor for time-resolved measurements and its applications. BioCAS 2016: 460-463 - [c21]Taichi Kasigao, Sang-Man Han, Hanh Trang, Taishi Takasawa, Satoshi Aoyama, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
A Time-of-Flight CMOS Range Image Sensor Using 4-Tap Output Pixels with Lateral-Electric-Field Control. IMSE 2016: 1-6 - [c20]Hanh Trang, Taichi Kasugai, Keigo Isobe, Sang-Man Han, Taichi Takasawa, Xing Lioe De, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
Design, implementation and evaluation of a TOF range image sensor using multi-tap lock-in pixels with cascaded charge draining and modulating gates. IMSE 2016: 1-6 - [c19]Takuya Yoda, Hajime Nagahara, Rin-Ichiro Taniguchi, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito:
Dynamic photometric stereo method using multi-tap CMOS image sensor. ICPR 2016: 2356-2361 - 2015
- [j9]Lianghua Miao, Keita Yasutomi, Shoma Imanishi, Shoji Kawahito:
A column-parallel clock skew self-calibration circuit for time-resolved CMOS image sensors. IEICE Electron. Express 12(24): 20150911 (2015) - [c18]Bo Zhang, Keiichiro Kagawa, Taishi Takasawa, Min-Woong Seo, Keita Yasutomi, Shoji Kawahito:
A high-sensitivity 2x2 multi-aperture color camera based on selective averaging. IMSE 2015: 94030C - [c17]Futa Mochizuki, Keiichiro Kagawa, Shin-ichiro Okihara, Min-Woong Seo, Bo Zhang, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito:
6.4 Single-shot 200Mfps 5×3-aperture compressive CMOS imager. ISSCC 2015: 1-3 - [c16]Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Taishi Takasawa, Yoshimasa Kawata, Nobukazu Teranishi, Zhuo Li, Izhal Abdul Halin, Shoji Kawahito:
11.2 A 10.8ps-time-resolution 256×512 image sensor with 2-Tap true-CDS lock-in pixels for fluorescence lifetime imaging. ISSCC 2015: 1-3 - [c15]Tongxi Wang, Amin M. R. Khandaker, Keita Yasutomi, Shoji Kawahito:
A digital calibration technique for folding-integration/cyclic cascaded ADCs. MWSCAS 2015: 1-4 - 2014
- [j8]Takaya Yamazato, Isamu Takai, Hiraku Okada, Toshiaki Fujii, Tomohiro Yendo, Shintaro Arai, Michinori Andoh, Tomohisa Harada, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
Image-sensor-based visible light communication for automotive applications. IEEE Commun. Mag. 52(7): 88-97 (2014) - [j7]Zhiheng Wei, Keita Yasutomi, Shoji Kawahito:
Extremely small differential non-linearity in a DMOS capacitor based cyclic ADC for CMOS image sensors. IEICE Electron. Express 11(20): 20140893 (2014) - [j6]Bo Zhang, Keiichiro Kagawa, Taishi Takasawa, Min-Woong Seo, Keita Yasutomi, Shoji Kawahito:
RTS Noise and Dark Current White Defects Reduction Using Selective Averaging Based on a Multi-Aperture System. Sensors 14(1): 1528-1543 (2014) - [c14]Sang-Man Han, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
A CMOS time-of-flight range image sensor using draining only modulation structure. IMSE 2014: 90220P - [c13]Kamel Mars, Beak Guseul, Sang-Man Han, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Mamoru Hashimoto, Shoji Kawahito:
A stimulated Raman scattering imager using high-speed lateral electric field modulator and lock-in pixels amplifiers. IMSE 2014: 90220D - [c12]Min-Woong Seo, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
A high fill-factor low dark leakage CMOS image sensor with shared-pixel design. IMSE 2014: 90220M - [c11]Takahiro Usui, Keita Yasutomi, Sang-Man Han, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito:
An indirect time-of-flight measurement technique for sub-mm range resolution using impulse photocurrent response. IMSE 2014: 90220W - [c10]Keita Yasutomi, Sang-Man Han, Min-Woong Seo, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito:
A time-resolved image sensor for tubeless streak cameras. IMSE 2014: 902202 - [c9]Sang-Man Han, Taishi Takasawa, Tomoyuki Akahori, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
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 2014: 130-131 - [c8]Keita Yasutomi, Takahiro Usui, Sang-Man Han, Taishi Takasawa, Keiichiro Kagawa, Shoji Kawahito:
7.5 A 0.3mm-resolution Time-of-Flight CMOS range imager with column-gating clock-skew calibration. ISSCC 2014: 132-133 - [c7]Kamel Mars, Ken Egawa, Xing Lioe De, Sang-Man Han, Taishi Takasawa, Keita Yasutomi, Keiichiro Kagawa, Mamoru Hashimoto, Shoji Kawahito:
Lock-in pixels readout circuit using a high speed lateral electric field modulator with differential charge accumulation for stimulated Raman scattering imager. NEWCAS 2014: 249-252 - 2013
- [j5]Mohd Amrallah Mustafa, Min-Woong Seo, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa:
RTS noise reduction of CMOS image sensors using amplifier-selection pixels. IEICE Electron. Express 10(15): 20130299 (2013) - [j4]Sung-Wook Jun, Lianghua Miao, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
Design of a Digitally Error-Corrected Pipeline ADC Using Incomplete Settling of Pre-Charged Residue Amplifiers. IEICE Trans. Electron. 96-C(6): 828-837 (2013) - [c6]Min-Woong Seo, Keiichiro Kagawa, Keita Yasutomi, Shoji Kawahito:
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 2013: 865905 - 2012
- [j3]Kaita Imai, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
A distributed ramp signal generator of column-parallel single-slope ADCs for CMOS image sensors. IEICE Electron. Express 9(24): 1893-1899 (2012) - [j2]Min-Woong Seo, Sungho Suh, Tetsuya Iida, Taishi Takasawa, Keigo Isobe, Takashi Watanabe, Shinya Itoh, Keita Yasutomi, Shoji Kawahito:
A Low-Noise High Intrascene Dynamic Range CMOS Image Sensor With a 13 to 19b Variable-Resolution Column-Parallel Folding-Integration/Cyclic ADC. IEEE J. Solid State Circuits 47(1): 272-283 (2012) - [c5]Min-Woong Seo, An Wang, Zhuo Li, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito:
A CMOS imager using focal-plane pinhole effect for confocal multibeam scanning microscopy. Sensors, Cameras, and Systems for Industrial and Scientific Applications 2012: 829807 - 2011
- [j1]M. Shakowat Zaman Sarker, Shinya Itoh, Moeta Hamai, Isamu Takai, Michinori Andoh, Keita Yasutomi, Shoji Kawahito:
Design and Implementation of A CMOS Light Pulse Receiver Cell Array for Spatial Optical Communications. Sensors 11(2): 2056-2076 (2011) - [c4]Zhuo Li, Keita Yasutomi, Taishi Takasawa, Shinya Itoh, Shoji Kawahito:
A CMOS image sensor with draining only modulation pixels for fluorescence lifetime imaging. Sensors, Cameras, and Systems for Industrial, Scientific, and Consumer Applications 2011: 78750D - 2010
- [c3]Keita Yasutomi, Shinya Itoh, Shoji Kawahito:
A 2.7e- temporal noise 99.7% shutter efficiency 92dB dynamic range CMOS image sensor with dual global shutter pixels. ISSCC 2010: 398-399 - [c2]Shinya Itoh, Isamu Takai, M. Shakowat Zaman Sarker, Moeta Hamai, Keita Yasutomi, Michinori Andoh, Shoji Kawahito:
A CMOS image sensor for 10Mb/s 70m-range LED-based spatial optical communication. ISSCC 2010: 402-403
2000 – 2009
- 2008
- [c1]Shoji Kawahito, Kazutaka Honda, Zheng Liu, Keita Yasutomi, Shinya Itoh:
A 15b power-efficient pipeline A/D converter using non-slewing closed-loop amplifiers. CICC 2008: 117-120
Coauthor Index
[j32] [j31] [j30] [j29] [j28] [j27] [j26] [c29] [j25] [j24] [j23] [c28] [j22] [j21] [j20] [j19] [j18] [j17] [j16] [j15] [j14] [c27] [c26] [j13] [j12] [c25] [c24] [c23] [j11] [j10] [c22] [c21] [c20] [c19] [j9] [c18] [c17] [c16] [c15] [j8] [j7] [j6] [c14] [c13] [c12] [c11] [c10] [c9] [c8] [c7] [j5] [j4] [c6] [j3] [j2] [c5] [j1] [c4] [c3] [c2] [c1]
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