A 0.5 V, 14.28-kframes/s, 96.7-dB Smart Image Sensor With Array-Level Image Signal Processing for IoT Applications

作者：Yin Chin^*; Chiu Chin Fong^*; Hsieh Chih Cheng^*

来源：IEEE Transactions on Electron Devices, 2016, 63(3): 1134-1140.

DOI：10.1109/TED.2016.2521168

• CMOS image sensors (CISs)
• dynamic range (DR)
• image edge detection
• pulsewidth modulation (PWM)
• smart pixels

This paper presents a smart image sensor with multiple operation modes, including edge extraction, multipoint tracking (MPT), and high-dynamic-range (HDR) imaging for wireless sensor nodes in Internet-of-Things applications. The pixel consists of a 0.5 V operated pulsewidth-modulation sensor for achieving HDR response and low fixed pattern noise. Array-level image signal processing is implemented using a local interpixel feedback network, in-pixel low power dynamic logics, and a corresponding peripheral with an event-driven hand-shaking readout. A prototype chip with a 64 x 64 CMOS image sensor (CIS) array is designed and fabricated in a TSMC 0.18-mu m CIS technology. In the MPT mode, the measured tracking speed is 14.28 kframes/s with an error of 0.36 pixels and a tracking capability up to four points. In the HDR imaging mode, the achieved DR is 96.7 dB.

• 出版日期2016-3
• 单位清华大学