Low Power Modulation Scheme to Avoid Camera Reception Discontinuity 


Vol. 43,  No. 7, pp. 1116-1123, Jul.  2018
10.7840/kics.2018.43.7.1116


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  Abstract

In this study, we have studied the modulation structure of low - power camera communication for short distance using a rolling shutter camera. Asynchronous reception of short - range camera communication, unbalance of exposure distribution, asymmetry of 0 and 1 data image were analyzed. The data is expressed by the width of the image pulse, reflecting the size ratio characteristics of the image. To avoid the problem of discontinuity, the data was repeatedly transmitted. In order to reduce the problem of asymmetry, one data image and one zero data image are used differently. Through experiments, we confirmed that the transmitted data was received without loss, and extended to 8 bits per frame, confirming that it could be up to 240 bits / sec. With dedicated HW, higher data transfer rates can be expected while maintaining the existing structure. By expressing the data by measuring the interval of pulses, there is no need to recover the clock, and simple decoding is possible, which is advantageous to the IoT system.

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  Cite this article

[IEEE Style]

J. Bae and J. T. Kim, "Low Power Modulation Scheme to Avoid Camera Reception Discontinuity," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 7, pp. 1116-1123, 2018. DOI: 10.7840/kics.2018.43.7.1116.

[ACM Style]

Jum-Han Bae and Jong Tae Kim. 2018. Low Power Modulation Scheme to Avoid Camera Reception Discontinuity. The Journal of Korean Institute of Communications and Information Sciences, 43, 7, (2018), 1116-1123. DOI: 10.7840/kics.2018.43.7.1116.

[KICS Style]

Jum-Han Bae and Jong Tae Kim, "Low Power Modulation Scheme to Avoid Camera Reception Discontinuity," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 7, pp. 1116-1123, 7. 2018. (https://doi.org/10.7840/kics.2018.43.7.1116)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880