A Low Power CMOS Image Sensor Design for Wireless Endoscopy Capsule

被引：21

作者：

Zhang, Milin ^{[1
]}

Bermak, Amine ^{[1
]}

Li, Xiaowen ^{[2
]}

Wang, Zhihua ^{[3
]}

机构：

[1] HKUST, ECE Dept, Clear Water Bay, Peoples R China

[2] Tsinghua Univ, ECE Dept, Beijing, Peoples R China

[3] Tsinghua Univ, IM, Beijing, Peoples R China

来源：

2008 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE - INTELLIGENT BIOMEDICAL SYSTEMS (BIOCAS) | 2008年

关键词：

CMOS image sensor; Digital Pixel Sensors; JPEG-LS encoder; low power; shared memory;

D O I：

10.1109/BIOCAS.2008.4696958

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

This paper proposes a low power full-custom CMOS digital pixel sensor array designed for a wireless endoscopy capsule. The proposed architecture greatly reduces the on-chip memory requirement by sharing pixel-level memory in the sensor array with the digital image processor. The pixel-level memories in the proposed full-custom image sensor are used not only to store the raw image pixel values in the image capture phase, but also is also used as buffers for the digital image processor during the image compression and transmission phase. Low power design is carried out both at the algorithmic and circuit levels, which reduces almost 50% switching activities on data bus, about 80% of power consumption in the main pixel circuit during image capture phase and 15% during image process phase while transmitting data at a rate of 2-frame/s.

引用

页码：397 / +

页数：2

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