Abstract: Optical CMOS sensor arrays have to cope with the problem of mismatch between individual pixels. This paper describes a CMOS camera chip with logarithmic response that has an automatic analog fixed pattern noise correction on chip. It was fabricated in an 0.8 micron process and consists of 64 $MUL 64 active pixels. The photoreceptors show a measured response of about 100 mV per decade in light intensity and a dynamic range of more than 6 decades. Each pixel includes a capacitor to store the offset correction voltage. After applying the calibration procedure the remaining fixed pattern noise of one column has a standard deviation of 2 mV corresponding to 2 percent of a decade. The result is a system with significantly reduced pixel to pixel variations in comparison to similar uncalibrated photoreceptor arrays. !5
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机译：摘要：光学CMOS传感器阵列必须解决单个像素之间的不匹配问题。本文介绍了一种具有对数响应的CMOS相机芯片，该芯片具有自动模拟固定图案噪声校正功能。它采用0.8微米工艺制造，由64个$ MUL 64个有源像素组成。感光体在光强度方面的测量响应大约为每十年十亿mV，动态范围超过六十年。每个像素包括用于存储偏移校正电压的电容器。在应用校准程序后，一列的剩余固定模式噪声的标准偏差为2 mV，相当于十分之一的2％。结果是与类似的未经校准的感光体阵列相比，像素间差异显着减少的系统。 ！5
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