Vol. 7

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2009-03-11

Measurement of Radiated Computer Rgb Signals

By Hidenori Sekiguchi
Progress In Electromagnetics Research C, Vol. 7, 1-12, 2009
doi:10.2528/PIERC08122201

Abstract

The present study was conducted to evaluate the information leakage of the display image that can be reconstructed using the electromagnetic interference emitted from a computer. A reconstructed image was generated from the information signal that correlated with the switching of the RGB signals of the computer display. Based on this observation, a measurement method and system for the information signal was developed by displaying an image with vertical stripes. To check the validity of this measurement method and system, test measurements were carried out. The test result revealed that the information signal can be detected in the electromagnetic interference. In addition, the information signal was found to be contained in high volume between 300 and 600 MHz, depending on the receiving frequency band.

Citation


Hidenori Sekiguchi, "Measurement of Radiated Computer Rgb Signals," Progress In Electromagnetics Research C, Vol. 7, 1-12, 2009.
doi:10.2528/PIERC08122201
http://jpier.org/PIERC/pier.php?paper=08122201

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