Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Keita YASUTOMI"'
Autor:
Anh Ngoc Pham, Thoriq Ibrahim, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara, Keiichiro Kagawa
Publikováno v:
Sensors, Vol 23, Iss 23, p 9332 (2023)
In this paper, we present a prototype pseudo-direct time-of-flight (ToF) CMOS image sensor, achieving high distance accuracy, precision, and robustness to multipath interference. An indirect ToF (iToF)-based image sensor, which enables high spatial r
Externí odkaz:
https://doaj.org/article/849bbe5064d6477483a33f54fdb388a2
Publikováno v:
IEEE Open Journal of the Solid-State Circuits Society, Vol 2, Pp 38-49 (2022)
This paper introduces a new series of time-of-flight (TOF) range image sensors that can be used for outdoor middle-range (10m to 100m) applications by employing a small duty-cycle modulated light pulse with a relatively high optical peak power. This
Externí odkaz:
https://doaj.org/article/dd30b854f2fb44558eb01ee44a356d6e
Autor:
Ryosuke Miyazawa, Yuya Shirakawa, Kamel Mars, Keita Yasutomi, Keiichiro Kagawa, Satoshi Aoyama, Shoji Kawahito
Publikováno v:
Sensors, Vol 23, Iss 8, p 3987 (2023)
This paper presents a time-of-flight image sensor based on 8-Tap P-N junction demodulator (PND) pixels, which is designed for hybrid-type short-pulse (SP)-based ToF measurements under strong ambient light. The 8-tap demodulator implemented with multi
Externí odkaz:
https://doaj.org/article/f6e38193ee7a412a89d91a34434707c7
Autor:
Ryuki Shigemasu, Yuki Teraoka, Satoshi Ota, Harutoyo Hirano, Keita Yasutomi, Shoji Kawahito, Masato Futagawa
Publikováno v:
Sensors, Vol 22, Iss 9, p 3509 (2022)
This study was conducted with the aim of developing a circuit system that enables the measurement of the moisture content and ion concentration with a simple circuit configuration. Our previous studies have shown that soil can be represented by an eq
Externí odkaz:
https://doaj.org/article/549b43ffceb543b58ff5b3628e5fb26f
A Dual-Mode 303-Megaframes-per-Second Charge-Domain Time-Compressive Computational CMOS Image Sensor
Autor:
Keiichiro Kagawa, Masaya Horio, Anh Ngoc Pham, Thoriq Ibrahim, Shin-ichiro Okihara, Tatsuki Furuhashi, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito, Hajime Nagahara
Publikováno v:
Sensors, Vol 22, Iss 5, p 1953 (2022)
An ultra-high-speed computational CMOS image sensor with a burst frame rate of 303 megaframes per second, which is the fastest among the solid-state image sensors, to our knowledge, is demonstrated. This image sensor is compatible with ordinary singl
Externí odkaz:
https://doaj.org/article/80b8ecdf9c99401e87f638ea803acfe6
Autor:
Masaya Horio, Yu Feng, Tomoya Kokado, Taishi Takasawa, Keita Yasutomi, Shoji Kawahito, Takashi Komuro, Hajime Nagahara, Keiichiro Kagawa
Publikováno v:
Sensors, Vol 22, Iss 7, p 2442 (2022)
Multi-path interference causes depth errors in indirect time-of-flight (ToF) cameras. In this paper, resolving multi-path interference caused by surface reflections using a multi-tap macro-pixel computational CMOS image sensor is demonstrated. The im
Externí odkaz:
https://doaj.org/article/a0c6075330114d4eae7a382053f36dc4
Publikováno v:
Sensors, Vol 21, Iss 2, p 454 (2021)
This paper presents a high-linearity high-resolution time-of-flight (ToF) linear-array digital image sensor using a time-domain negative feedback technique. A coarse ToF measurement loop uses a 5-bit digital-to-time converter (DTC) and a delayed gati
Externí odkaz:
https://doaj.org/article/d9c8847227654226a660ae14a4bba7be
Publikováno v:
Sensors, Vol 20, Iss 4, p 1040 (2020)
An 8-tap CMOS lock-in pixel image sensor that has seven carrier-capturing and a draining time window was developed for short-pulse time-of-flight (TOF) measurements. The proposed pixel for the short-pulse TOF measurements has seven consecutive time-g
Externí odkaz:
https://doaj.org/article/8b062576ca894eb79f231f399344c071
Publikováno v:
Sensors, Vol 20, Iss 1, p 116 (2019)
In this paper, a back-illuminated (BSI) time-of-flight (TOF) sensor using 0.2 µm silicon-on-insulator (SOI) complementary metal oxide semiconductor (CMOS) technology is developed for long-range laser imaging detection and ranging (LiDAR) application
Externí odkaz:
https://doaj.org/article/103b5cc9073946c0bacee05da44d92e3
Autor:
Sang-Man Han, Taishi Takasawa, Keita Yasutomi, Satoshi Aoyama, Keiichiro Kagawa, Shoji Kawahito
Publikováno v:
IEEE Journal of the Electron Devices Society, Vol 3, Iss 3, Pp 267-275 (2015)
This paper presents a CMOS time-of-flight (ToF) range image sensor using high-speed lock-in pixels with background light canceling capability. The proposed lock-in pixel uses MOS gate-induced lateral electric field control of depleted potential of pi
Externí odkaz:
https://doaj.org/article/109e642c852741d486fc5a50583ee54a