scholarly journals Mitigation of performance degradation due to dynamic display contents in visible light communication using TV backlight and CMOS image sensor

2018 ◽  
Vol 26 (17) ◽  
pp. 22342 ◽  
Author(s):  
Chi-Wai Chow ◽  
Ruei-Jie Shiu ◽  
Yen-Chun Liu ◽  
Wei-Chung Wang ◽  
Xin-Lan Liao ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Cmos Image Sensor ◽  
Image Sensor ◽  
Performance Degradation ◽  
Dynamic Display

scholarly journals Using advertisement light-panel and CMOS image sensor with frequency-shift-keying for visible light communication

2018 ◽  
Vol 26 (10) ◽  
pp. 12530 ◽  
Author(s):  
Chi-Wai Chow ◽  
Ruei-Jie Shiu ◽  
Yen-Chun Liu ◽  
Xin-Lan Liao ◽  
Kun-Hsien Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Frequency Shift ◽  
Visible Light Communication ◽  
Cmos Image Sensor ◽  
Image Sensor ◽  
Frequency Shift Keying ◽  
Shift Keying

scholarly journals Non-flickering 100 m RGB visible light communication transmission based on a CMOS image sensor

2018 ◽  
Vol 26 (6) ◽  
pp. 7079 ◽  
Author(s):  
Chi-Wai Chow ◽  
Ruei-Jie Shiu ◽  
Yen-Chun Liu ◽  
Yang Liu ◽  
Chien-Hung Yeh
Keyword(s):  
Visible Light ◽  
Visible Light Communication ◽  
Cmos Image Sensor ◽  
Image Sensor

scholarly journals An Optical Filter-Less CMOS Image Sensor with Differential Spectral Response Pixels for Simultaneous UV-Selective and Visible Imaging

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 13
Author(s):  
Yhang Ricardo Sipauba Carvalho da Silva ◽  
Rihito Kuroda ◽  
Shigetoshi Sugawa
Keyword(s):  
Visible Light ◽  
Spectral Sensitivity ◽  
Dynamic Range ◽  
Uv Light ◽  
Spectral Response ◽  
Cmos Image Sensor ◽  
Image Sensor ◽  
Oxide Semiconductor ◽  
Conversion Gain ◽  
Uv Sensitivity

This paper presents a complementary metal-oxide-semiconductor (CMOS) image sensor (CIS) capable of capturing UV-selective and visible light images simultaneously by a single exposure and without employing optical filters, suitable for applications that require simultaneous UV and visible light imaging, or UV imaging in variable light environment. The developed CIS is composed by high and low UV sensitivity pixel types, arranged alternately in a checker pattern. Both pixel types were designed to have matching sensitivities for non-UV light. The UV-selective image is captured by extracting the differential spectral response between adjacent pixels, while the visible light image is captured simultaneously by the low UV sensitivity pixels. Also, to achieve high conversion gain and wide dynamic range simultaneously, the lateral overflow integration capacitor (LOFIC) technology was introduced in both pixel types. The developed CIS has a pixel pitch of 5.6 µm and exhibits 172 µV/e− conversion gain, 131 ke− full well capacity (FWC), and 92.3 dB dynamic range. The spectral sensitivity ranges of the high and low UV sensitivity pixels are of 200–750 nm and 390–750 nm, respectively. The resulting sensitivity range after the differential spectral response extraction is of 200–480 nm. This paper presents details regarding the CIS pixels structures, doping profiles, device simulations, and the measurement results for photoelectric response and spectral sensitivity for both pixel types. Also, sample images of UV-selective and visible spectral imaging using the developed CIS are presented.

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