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High Speed Receiver for Capsule Endoscope

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Abstract

In this study, a high-speed receiver for a capsule endoscope was proposed and implemented. The proposed receiver could receive 20 Mbps data that was sufficient to receive images with a higher resolution than conventional receivers. The receiver used a 1.2 GHz band to receive radio frequency (RF) signal, and demodulated the signal to an intermediate frequency (IF) stage (150 MHz). The demodulated signal was amplified, filtered, and under-sampled by a high-speed analog-to-digital converter (ADC). In order to decode the under-sampled data in real time, a simple frequency detection algorithm was selected and was implemented by using a FPGA. The implemented system could receive 20 Mbps data.

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Abbreviations

ADC:

Analog-to-digital converter

BER:

Bit error rate

CPLD:

Complex programmable logic device

DT:

Data transmission

FM:

Frequency modulation

FPGA:

Field-programmable gate array

IF:

Intermediate frequency

RF:

Radio frequency

SNR:

Signal to noise ratio

VCO:

Voltage controlled oscillator

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Acknowledgement

This work was supported by grand No. 10031779 from the Strategic Technology Development Program of Ministry of Knowledge Economy.

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Authors and Affiliations

  1. School of Electrical Engineering and Computer Science, Kyungpook National University, Daegu, Korea

    S. H. Woo, H. C. Choi & J. H. Cho

  2. Ulsan Broadcasting Corporation, Ulsan, Korea

    K. W. Yoon

  3. Samsung Corporation, Seoul, Korea

    Y. K. Moon

  4. Department of Medical and Biological Engineering Graduate School, Kyungpook National University, Daegu, Korea

    J. H. Lee

  5. Department of Medical Informatics, School of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea

    H. J. Park

  6. Department of Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Korea

    T. W. Kim

  7. Department of Computer Control & Electrical Engineering, Kyungil University, Kyungpook National University, Daegu, Korea

    C. H. Won

Authors
  1. S. H. Woo
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  2. K. W. Yoon
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  3. Y. K. Moon
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  4. J. H. Lee
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  5. H. J. Park
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  6. T. W. Kim
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  7. H. C. Choi
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  8. C. H. Won
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  9. J. H. Cho
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Corresponding author

Correspondence to J. H. Cho.

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Woo, S.H., Yoon, K.W., Moon, Y.K. et al. High Speed Receiver for Capsule Endoscope. J Med Syst 34, 843–847 (2010). https://doi.org/10.1007/s10916-009-9298-1

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  • DOI: https://doi.org/10.1007/s10916-009-9298-1

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