Title :
A high-dynamic-range CMOS image sensor for automotive applications
Author :
Schanz, Michael ; Nitta, Christian ; Bussmann, A. ; Hosticka, Bedrich J. ; Wertheimer, Reiner K.
Author_Institution :
Associat. for Electr. Electron. & Inf. Technol., Frankfurt, Germany
fDate :
7/1/2000 12:00:00 AM
Abstract :
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.
Keywords :
CMOS image sensors; automotive electronics; image processing equipment; integrated circuit noise; intelligent sensors; readout electronics; smart pixels; 1 micron; 256 pixel; 50 Hz; 56 dB; CMOS image sensor; SNR; automotive applications; double-metal CMOS technology; high dynamic range image sensor; multiexposure; multigain linear readout; signal-to-noise ratio; Automotive applications; Brightness; CMOS image sensors; CMOS technology; Circuit noise; Dynamic range; Humans; Photodiodes; Pixel; Signal to noise ratio;
Journal_Title :
Solid-State Circuits, IEEE Journal of
