Open AccessMethod for Evaluating Digital Video Electromagnetic Information Leakage from Video Cable
Author(s) -
Sen WANG,
Yang QIU,
Jin TIAN
Publication year - 2021
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2021.07.009
Subject(s) - leakage (economics) , information leakage , computer science , electromagnetic radiation , acoustics , electromagnetic spectrum , digital video , correlation coefficient , electronic engineering , computer vision , telecommunications , physics , optics , engineering , transmission (telecommunications) , computer network , machine learning , economics , macroeconomics
Electromagnetic emissions from electrical information equipment may contain useful information and lead to information leakage. In order to detect the electromagnetic information leakage of digital video cable, a rapid testing method for computer video information leakage detection without reconstructing the displayed image is proposed. In this method, the electromagnetic radiation spectrum of typical image transmitted by HDMI cable is simulated. Then the electromagnetic radiation spectrum of the computer when transmitting the same image as the typical image is obtained by conduction and radiation EMC test methods. Finally, the correlation between the spectrum of simulation and the test spectrum is analyzed, and the correlation coefficient is used to judge whether the computer has produced the electromagnetic leakage of video information. The analysis and test results show that when the correlation coefficient is greater than 0.5, the electromagnetic leakage of computer video information can be judged.