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Proceedings Paper

Design and implementation of a one-chip wireless camera device for a capsule endoscope
Author(s): Shinya Itoh; Shoji Kawahito; Tomoyuki Akahori; Susumu Terakawa
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Paper Abstract

In this paper, we describe the design and implementation of a one-chip camera device for a capsule endoscope. This experimental chip integrates peripheral circuits required for the capsule endoscope and the wireless transmission function based on a data transmission method using human body conduction. The integrated functional blocks include an image array, a timing generator, a clock generator, a voltage regulator, a 10b cyclic A/D converter, and a BPSK modulator. It can be operated autonomously with 3 pins (VDD, GND, and DATAOUT). A prototype chip which has 320x240 effective pixels was fabricated using 0.25μm CMOS image sensor process and the autonomous imaging was demonstrated. The chip size is 4.84mmx4.34mm. With a 2.0 V power supply, the analog part consumes 950µW and the total power consumption at 6 fps (20MHz carrier frequency) is about 3mW.

Paper Details

Date Published: 7 March 2005
PDF: 10 pages
Proc. SPIE 5677, Sensors and Camera Systems for Scientific and Industrial Applications VI, (7 March 2005); doi: 10.1117/12.587726
Show Author Affiliations
Shinya Itoh, Shizuoka Univ. (Japan)
Shoji Kawahito, Shizuoka Univ. (Japan)
Tomoyuki Akahori, Sanei Hytechs Co., Ltd. (Japan)
Susumu Terakawa, Hamamatsu Univ. School of Medicine (Japan)

Published in SPIE Proceedings Vol. 5677:
Sensors and Camera Systems for Scientific and Industrial Applications VI
Morley M. Blouke, Editor(s)

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