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IEICE Transactions on Information and Systems 2007 E90-D(3):694-697; doi:10.1093/ietisy/e90-d.3.694
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Copyright © 2007 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Biological Engineering

CPLD Based Bi-Directional Wireless Capsule Endoscopes

JyungHyun LEE1, YeonKwan MOON1, YoungHo YOON1, HeeJoon PARK2, ChulHo WON3, HyunChul CHOI1 and JinHo CHO1

1 The authors are with the School of Electrical Engineering and Computer Science, Kyungpook National University, Daegu, 702–701 Korea. E-mail: jhcho{at}ee.knu.ac.kr, 2 The author is with Keimyung University, Korea., 3 The author is with Kyungil University, Korea.

In the case of miniaturized telemetry capsules, such as a capsule endoscope that can acquire and transmit images from the intestines, the size and the power consumption of the module are restricted. In the capsule endoscopes, it is desirable that the control function can capacitate the sampling of digestive fluid and tissue, drug delivery, and locomotion. In this paper, the control function was embodied by bi-directional communication. A CPLD (complex programmable logic device) controller was designed and implemented for the bi-directional communication in capsule endoscope. The diameter of capsule was 12 mm and the length was 30 mm. The performance of implemented capsule was verified by in-vivo animal experiments.

Key Words: bi-directional wireless capsule endoscopes, encoder/decoder, CPLD

Manuscript received October 24, 2005. Manuscript revised August 28, 2006.

References

[1] M. Classen, G. Tytgat, and C. Lighdale, Gastroenterological endoscopy, Thieme Medical Publication, NewYork, 2002.

[2] K. Schiller, R. Cockel, R. Hunt, and B. Warren, Atlas of gastrointestinal endoscopy and reatd pathlolgy, Blackwell Science, Malden, 2001.

[3] G. Iddan, G. Meron, A. Glukhovsky, and P. Swain, "Wireless capsule endoscopy," Nature, vol.405, p.417, May 2000.[Medline]

[4] G. Meron, "The development of the swallowable video capsule (M2A)," Gastrointest Endosc., vol.52, no.6, pp.817–819, Dec. 2000.[Medline]

[5] D.R. Cave, "Wireless video capsule endoscopy," Clinical Perspectives in Gastroentorology, vol.5, no.4, pp.203–207, Aug. 2000.

[6] H.J. Park, I.Y. Park, J.W. Lee, B.S. Song, C.H. Won, and J.H. Cho, "Design of miniaturized telemetry module for bi-directional wireless endoscopes," IEICE Trans. Fundamentals, vol.E86-A, no.6, pp.1487–1491, June 2003.


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This Article
Right arrow Abstract Freely available
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
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Right arrow Articles by LEE, J.
Right arrow Articles by CHO, J.
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What's this?