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Wide dynamic range CMOS image sensor with in-pixel double-exposure and synthesis

Wide dynamic range CMOS image sensor with in-pixel double-exposure and synthesis
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摘要 A wide-dynamic-range CMOS image sensor（CIS） based on synthesis of a long-time and a short-time exposure signal in the floating diffusion（FD） of a five-transistor active pixel is proposed.With optimized pixel operation,the response curve is compressed and a wide dynamic range image is obtained.A prototype wide-dynamic-range CMOS image sensor was developed with a 0.18μm CIS process.With the double exposure time 2.4 ms and 70 ns,the dynamic range of the proposed sensor is 80 dB with 30 frames per second（fps）.The proposed CMOS image sensor meets the demands of applications in security surveillance systems. A wide-dynamic-range CMOS image sensor（CIS） based on synthesis of a long-time and a short-time exposure signal in the floating diffusion（FD） of a five-transistor active pixel is proposed.With optimized pixel operation,the response curve is compressed and a wide dynamic range image is obtained.A prototype wide-dynamic-range CMOS image sensor was developed with a 0.18μm CIS process.With the double exposure time 2.4 ms and 70 ns,the dynamic range of the proposed sensor is 80 dB with 30 frames per second（fps）.The proposed CMOS image sensor meets the demands of applications in security surveillance systems.
作者 李斌桥 孙忠岩 徐江涛
机构地区 School of Electronics and Information Engineering
出处 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2010年第5期73-77,共5页 半导体学报（英文版）
基金 supported by the National Natural Science Foundation of China(Nos.60806010,60976030) the Tianjin Innovation Special Funds for Science and Technology,China(No.05FZZDGX00200).
关键词 CMOS image sensor double exposure dynamic range five-transistor active pixel CMOS image sensor double exposure dynamic range five-transistor active pixel
分类号 TP212 [自动化与计算机技术—检测技术与自动化装置] TP274.2 [自动化与计算机技术—检测技术与自动化装置]
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参考文献8

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  • 4Yang S H, Cho K R. High dynamic range CMOS image sensor with conditional reset. IEEE Custom Integrated Circuit Conference, 2002:265.
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  • 7Sasaki M, Mase M, Kawahito S, et al. A wide-dynamic-range CMOS image sensor based on multiple short exposure time readout with multiple resolution column parallel ADC. IEEE J Sensors, 2007, 7:151.
  • 8Yamada T, Kasuga S, Murata T, et al. A 140 dB dynamic range MOS image sensor with in-pixel multiple-exposure synthesis. ISSCC, 2008.
Journal of Semiconductors
2010年 第5期

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