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A high-dynamic-range CMOS image sensor for automotive applications

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5 Author(s)
Schanz, M. ; Associat. for Electr. Electron. & Inf. Technol., Frankfurt, Germany ; Nitta, C. ; Bussmann, A. ; Hosticka, Bedrich J.
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In this paper, a 256/spl times/256 pixel CMOS imager is described that exhibits 120 dB dynamic range, 56 dB signal-to-noise ratio (SNR), 65% fill factor, and an effective frame rate of 50 Hz. This has been achieved using a unique combination of a multiexposure and a multigain linear readout. The imager has been integrated in 1 /spl mu/m double-metal CMOS technology. The intended application is for driver's assistant systems, but the imager can be used for a wide range of applications requiring high dynamic range.

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Solid-State Circuits, IEEE Journal of  (Volume:35 ,  Issue: 7 )