Signal-to-Noise Ratio Enhancement in Cardiac Pulse Measurements Using Multitap CMOS Image Sensors With In-Pixel Temporal Redundant Samplings

Cao, Changqing; Hakamata, Masashi; Yasutomi, Keita; Kagawa, Keiichiro; Aoyama, Satoshi; Tsumura, Norimichi; Kawahito, Shoji

doi:10.1109/ted.2021.3122394

Cited by 2 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, demand for sensing technology with complementary metal oxide (CMOS) image sensor is greatly increased in various fields such as security, medical and healthcare, factory automation, automobile, and so on. To improve the productivity and sustainability in manufacturing and agriculture, high precision image sensors with high signal to noise ratio (SNR) are required [1][2] . Especially, measurement technology that can visualize the fluid concentration distribution by nondestructive nor noninvasive way is strongly expected to be useful in these fields.…”

Section: Introductionmentioning

confidence: 99%

[Invited Paper] A High SNR Global Shutter CMOS Image Sensor Technology for High Precision Absorption Imaging Applications

Oikawa,

Kuroda,

Hamaya

et al. 2024

MTA

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

[Invited Paper] A High SNR Global Shutter CMOS Image Sensor Technology for High Precision Absorption Imaging Applications

Oikawa,

Kuroda,

Hamaya

et al. 2024

MTA

View full text Add to dashboard Cite

“…fields, next-generation Internet-of-Things (IoT) technologies with high-precision image sensors having high signal-to-noise ratio (SNR) for analytical applications [1], [2] are needed. In particular, in situ measurement technologies that can measure and visualize the concentration distribution of dynamically moving gases and liquids by noninvasive/nondestructive manners are expected to be useful in various fields.…”

mentioning

confidence: 99%

A 70-dB SNR High-Speed Global Shutter CMOS Image Sensor for in Situ Fluid Concentration Distribution Measurements

Oikawa

Kuroda

Takahashi

et al. 2022

IEEE Trans. Electron Devices

View full text Add to dashboard Cite

This article presents a global shutter (GS) high signal-to-noise ratio (SNR) and a high-frame-rate CMOS image sensor (CIS) for in situ fluid concentration distribution measurements using absorption imaging. The pixel consists of a ultraviolet (UV)-visible-near infrared (NIR) waveband pinned photodiode (PD) with high robustness against UV light irradiation for various measurement objects, two-stage lateral overflow integration capacitors (LOFIC) for high dynamic range and high SNR, and a voltage-domain memory bank for GS. The developed prototype CIS with 22.4-μm pitch pixels exhibited 69.7-dB maximum SNR, 123-dB dynamic range, and 1000-frames/s maximum frame rate under single exposure GS and successfully captured images of dynamic movement of NO 2 gas concentration distribution in the vacuum chamber for 300-mm-diameter wafers. Index Terms-Absorption imaging, CMOS image sensor (CIS), global shutter (GS), lateral overflow integration capacitor (LOFIC), signal-to-noise ratio (SNR), wide dynamic range (WDR). I. INTRODUCTIONP RACTICAL realization of smart ways of manufacturing, agriculture, and healthcare is critical to improve the productivity and sustainability of our society. In these Manuscript

show abstract

Signal-to-Noise Ratio Enhancement in Cardiac Pulse Measurements Using Multitap CMOS Image Sensors With In-Pixel Temporal Redundant Samplings

Cited by 2 publications

References 15 publications

[Invited Paper] A High SNR Global Shutter CMOS Image Sensor Technology for High Precision Absorption Imaging Applications

[Invited Paper] A High SNR Global Shutter CMOS Image Sensor Technology for High Precision Absorption Imaging Applications

A 70-dB SNR High-Speed Global Shutter CMOS Image Sensor for in Situ Fluid Concentration Distribution Measurements

Contact Info

Product

Resources

About