A low power CMOS image sensor design for wireless endoscopy capsule

Milin Zhang, Amine Bermak, Xiaowen Li, Zhihua Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
Pages397-400
Number of pages4
DOIs
Publication statusPublished - 1 Dec 2008
Event2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008 - Baltimore, MD, United States
Duration: 20 Nov 200822 Nov 2008

Publication series

Name2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008

Other

Other2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
CountryUnited States
CityBaltimore, MD
Period20/11/0822/11/08

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Keywords

  • CMOS image sensor
  • Digital pixel sensors
  • JPEG-LS encoder
  • Low power
  • Shared memory

ASJC Scopus subject areas

  • Biomedical Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Zhang, M., Bermak, A., Li, X., & Wang, Z. (2008). A low power CMOS image sensor design for wireless endoscopy capsule. In 2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008 (pp. 397-400). [4696958] (2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008). https://doi.org/10.1109/BIOCAS.2008.4696958