Yuki Sugiura

Ovarian tachykinin signaling system induces the growth of secondary follicles during the gonadotropin-independent process

Tsuyoshi Kawada, Masato Aoyama, Shin Matsubara, Tomohiro Osugi et autres

Mammalian follicle growth development is mainly regulated by the hypothalamus-pituitary-gonadal axis after puberty. Although pituitary hormones, gonadotropins, are involved in hypothalamus-pituitary-gonadal axis signaling, they are not responsible for the growth of early stage follicles, namely, primordial follicles, primary follicles, and secondary follicles, …

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Chemogenetic activation of hepatic G12 signaling ameliorates hepatic steatosis and obesity

Kaito Arai, Yuki Ono, Yuki Sugiura, Keizo Kaneko et autres

Objective Hepatic steatosis , the early stage of nonalcoholic fatty liver disease (NAFLD), currently lacks targeted pharmacological treatments. G protein-coupled receptors (GPCRs) in hepatocytes differentially regulate lipid metabolism depending on their coupling profile of G protein subtypes. Unlike G s , G …

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Robust Pixel Design Methodologies for a Vertical Avalanche Photodiode (VAPD)-Based CMOS Image Sensor

Akito Inoue, Naoki Torazawa, Shota Yamada, Yuki Sugiura et autres

We present robust pixel design methodologies for a vertical avalanche photodiode-based CMOS image sensor, taking account of three critical practical factors: (i) "guard-ring-free" pixel isolation layout, (ii) device characteristics "insensitive" to applied voltage and temperature, and (iii) stable operation subject to intense …

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A Nearly Interference-Free and Depth-Resolution-Configurable Time-of-Flight System Based on a Mega-Pixel Vertical Avalanche Photodiodes CMOS Image Sensor

Shota Yamada, Motonori Ishii, Shigetaka Kasuga, Masato Takemoto et autres

We present a long range (~250 m) time-of flight (TOF) system with suppressed (nearly-free) mutual-interference. The system is based on a$1296\times960$pixels vertical avalanche photodiodes (VAPD) CMOS image sensor (CIS). Real-time long-range 3D-imaging with 30 fps speed (450 fps for 2D imaging) is …

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Measurement of DC-side Electromagnetic Noise inside Photovoltaic Power Converters

Yuki Sugiura, Keiji Wãda, Shotaro Takahashi

Electromagnetic interference of photovoltaic (PV) Power Conditioning System (PCS) is a serious problem for the electromagnetic environment. For this problem, the International Special Committee on Radio Interference (CISPR) is discussing to determine a guideline of noise evaluation method and its regulation value …

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A 1200×900 6μm 450fps Geiger-Mode Vertical Avalanche Photodiodes CMOS Image Sensor for a 250m Time-of-Flight Ranging System Using Direct-Indirect-Mixed Frame Synthesis with Configurable-Depth-Resolution Down to 10cm

Shota Yamada, Toru Okino, Yusuke Sakata, Shigetaka Kasuga et autres

5.2 A 1200×900 6µm 450fps Geiger-Mode Vertical Avalanche Photodiodes CMOS Image Sensor for a 250m Time-of-Flight Ranging System Using Direct-Indirect-Mixed Frame Synthesis with Configurable-Depth-Resolution Down to 10cm

Toru Okino, Shota Yamada, Yusuke Sakata, Shigetaka Kasuga et autres

Long-range (~250m) measurement systems with 3D resolution are highly anticipated for various applications such as automotive, surveillance and robotics systems. Direct time-of-flight (ToF) systems based on CMOS image sensors (CIS) with avalanche photodiodes with the Geiger-mode or single-photon avalanche diodes (SPAD) have …

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A 250 m Direct Time-of-Flight Ranging System Based on a Synthesis of Sub-Ranging Images and a Vertical Avalanche Photo-Diodes (VAPD) CMOS Image Sensor

Yutaka Hirose, Shinzo Koyama, Motonori Ishii, Shigeru Saitou et autres

We have developed a direct time-of-flight (TOF) 250 m ranging Complementary Metal Oxide Semiconductor (CMOS) image sensor (CIS) based on a 688 × 384 pixels array of vertical avalanche photodiodes (VAPD). Each pixel of the CIS comprises VAPD with a standard four …

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A 220 M-Range Direct Time-of-Flight 688 × 384 CMOS Image Sensor with Sub-Photon Signal Extraction (SPSE) Pixels Using Vertical Avalanche Photo-Diodes and 6 KHz Light Pulse Counters

Shinzo Koyama, Motonori Ishii, Shigeru Saito, Masato Takemoto et autres

We have developed a direct time-of-flight (TOF) 220 m ranging CMOS image sensor (CIS) based on a 688 × 384 pixel array of vertical avalanche photodiodes. An area scene at 220 m ahead can be ranged and imaged by one high power …

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Quantitative full 3D blooming analysis on 1.4um BSI CMOS image sensor

Mitsuhiro Sengoku, Hisao Yoshimura, Yuki Sugiura, Sakiko Shimizu et autres

3D TCAD analysis of blooming for 1.4 μm CMOS image sensor (CIS) with two-shared pixel structure has been performed. Its blooming behavior has been modeled and clear design guidelines for potential control inside CIS pixels have been obtained.

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