The Computer Display System Of Electromagnetic Information Leakage Detection And Analysis

As the main data transmission and display of electronic equipment, thecomputer display system is composed of various subsystems and electronicequipments. Naturally or half unconsciously, the working system will produceelectromagnetic radiation, and the electromagnetic radiation is a result ofinteraction of these systems and components. So firstly this paper analysis thewhole computer’s display radiation system, then studying the each components’data flow of work, looking for each components which may be producedelectromagnetic radiation. For the computer’s display system.We have done alot of experiments, and has carried on the analysis to assess safety, lastly we takesome measures to reduce the display system’s elecmangetic radiation. The mainwork is as follows:First, based on the analysis of the computer display system’s maincomponent, we master the system’s working principle.Second, based on the basic theory and the analysis of radiationcharacteristics of information electromagnetic radiation on the computer display,we study the main way of the leakge, and furtherly identify the computer displaysystem’s main radiation source and its leakage way, to analyze the radiationcharacteristics of signals.Third, selecting the relevant equipment, build the test platform. Theantenna, probe, spectrum analyzer and oscilloscope and other equipment,computer radiation signal acquisition display various system components.Through the analysis of the experimental data, obtained the spectrum andradiation intensity display and LCD display, for data transmission line similaritytheory on whether it belongs to the emitted red signal is validated by signal.Fourth, according to the experimental data, and the practical theoreticalanalysis, and then gives the computer display system is safety evaluation ofelectromagnetic information leakage, meanwhile puts forward some feasiblecountermeasures of information security protection.