Acta Optica Sinica, Volume. 31, Issue 8, 828001(2011)
A High-Speed CMOS Image Sensor for Real-Time Vision Chip
A high-speed CMOS image sensor for real-time vision chip is proposed. The high-speed CMOS image sensor consists of CMOS photodiode array, correlated double sampling (CDS) array, programmable gain amplifier (PGA) array, area-efficient single-slope analog-to-digital converter (ADC) array and controller circuit. It can perform the image capturing and row-parallel signal processing. It outputs digital signal or digital image at a frame rate of over 1000 frame/s. It can reduce the fixed pattern noise (FPN) and amplify (or shrink) the output signals of the photodiode array to maintain the amplitude of the signal in row-parallel fashion. It can continuously perform 8-bit ADC conversion in row-parallel. A 128 pixel×128 pixel image sensor with 128 rows of CDS, PGA and single-slope ADC is fabricated by using 0.18 μm 1P6M CMOS process. The chip size is 2.2 mm×2.6 mm. The measured results demonstrate that the designed chip can perform high-speed real-time optical signal capturing and processing. It can be applied to the real-time vision chip system.
Get Citation
Copy Citation Text
Fu Qiuyu, Lin Qingyu, Zhang Wancheng, Wu Nanjian. A High-Speed CMOS Image Sensor for Real-Time Vision Chip[J]. Acta Optica Sinica, 2011, 31(8): 828001
Category: Remote Sensing and Sensors
Received: Mar. 2, 2011
Accepted: --
Published Online: Jul. 19, 2011
The Author Email: Qiuyu Fu (qiuyufu@semi.ac.cn)