A 1/2.5-inch 8Mpixel CMOS Image Sensor with a Staggered Shared-Pixel Architecture and an FDBoost Operation

📋 论文概要

提出一种1/2.5英寸8Mpixel CMOS图像传感器，采用交错共享像素架构和FDBoost操作，解决了传统共享像素架构中Bayer滤色器导致的Gr/Gb灵敏度不平衡问题，从而降低了固定模式噪声。

💡 主要创新点

• 提出交错共享像素架构，通过改变像素布局消除Gr/Gb灵敏度不平衡
• 引入FDBoost操作，提升传感器性能并降低噪声

🏷 关键词

📄 原文摘要

architectures have previously been proposed [1-3]. However, the use of conventional shared-pixel architectures leads to a Gr/Gb sensitivity imbalance because the Gr pixel and the Gb pixel have a different layout structure when using a Bayer Color Filter Array (CFA) [3,4]. The Gr/Gb sensitivity imbalance causes conspicuous fixed-pattern noise in reproduced images [4]. In many cases, the noise level has a scene-color temperature dependence, due to the sensitivity imbalance caused by the attenuation of the incident light by the electromagnetic effect. Therefore, conventional shared-pixel architectures need complicated digital signal processing to properly correct for this Gr/Gb sensitivity imbalance. In order to maintain sensor performance with a shrink in pixel size, a

👥 作者与机构

Nagataka Tanaka, Junji Naruse, Akiko Mori, Ryuta Okamoto,

Hirofumi Yamashita, Makoto Monoi Toshiba Semiconductor, Yokohama, Japan In order to shrink pixel sizes for mobile phone cameras, several shared-pixel