CMOS Neuromorphic Optical Sensor Chip With Color Change-Intensity Change Disambiguation (CCICD)
CMOS Neuromorphic Optical Sensor Chip With Color Change-Intensity Change Disambiguation (CCICD)
复制标题
具有颜色变化-强度变化消歧功能的 CMOS 神经形态光学传感器芯片 (CCICD)
DOI：
10.1109/jsen.2009.2020676
复制
发表时间：
2009
影响因子：
4.3
通讯作者：
A. Titus
中科院分区：
文献类型：
--
作者：
Z. Fu;A. Titus
在本文中，我们提出了一种新型的陆地视网膜样神经形态传感器芯片，它可以(1)同时通过两种途径进行亮度和颜色检测，(2)可以进行颜色变化-强度变化消歧（CCICD）。辐照度检测路径具有宽动态检测范围，跨越3个数量级，对背景光变化具有鲁棒性。颜色检测路径具有埋置双结光电二极管作为光感受器，随后是两个并联对数I-V转换器，其输出到差分放大器。该通道的输出是一个颜色响应，在400到700纳米波长范围内具有大约50纳米的分辨率，在700到900纳米之间具有22纳米的分辨率。有了这两个路径，我们可以执行CCICD来确定辐照度路径输出的变化是由于辐照度变化、颜色变化还是两者兼而有之。这种地面视网膜样神经形态传感器芯片采用AMI 1.5 mum技术实现，这是MOSIS提供的标准CMOS制造工艺。
In this paper, we propose a novel terrestrial retina-like neuromorphic sensor chip which can (1) perform irradiance and color detection via two pathways simultaneously and (2) can perform color change-intensity change disambiguation (CCICD). The irradiance detection pathway has a wide-dynamic detection range, spanning 3 orders of magnitude, and is robust to background light variations. The color detection pathway has a buried double junction photodiode as the photoreceptor followed by two parallel logarithmic I-V convertors whose outputs go to a differential amplifier. The output from this pathway is a color response which has roughly 50 nm resolution for wavelengths from 400 to 700 nm, and 22 nm resolution between 700-900 nm. With these two pathways, we can perform CCICD to determine if a change in the output of the irradiance pathway is because of irradiance change, color change, or both. This terrestrial retina-like neuromorphic sensor chip is implemented in AMI 1.5 mum technology, a standard CMOS fabrication process available at MOSIS.