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Research on the Video Signal Leaking from the System of LED Large Screens

Author: LiZuo
Tutor: QiuYang
School: Xi'an University of Electronic Science and Technology
Course: Measuring Technology and Instruments
Keywords: LED Large Screen System information safety signal leaking
CLC: TN873.92
Type: Master's thesis
Year: 2011
Downloads: 52
Quote: 0
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Abstract


As an information processing equipment, there is inevitably the risk of information leakage in LED large screen displays. The information disclosure from LED large screen displays has become a new research topic.At the beginning of this paper, the overview of the information disclosure in the LED display systems was described, and the importance of inhibition the information leakage in LED large screen display systems was discussed. In order to analyze the information disclosure principles of the LED large screen display systems, firstly in this paper, the structure and working principle of the system was analyzed, and the information disclosure of the system was initially positioned. On this basis, the structure and working principles of the potential leak source---the DVI encoder / decoder circuit, the Ethernet sending / receiving circuit, the LED driver and displays---was respectively analyzed, and the signal characteristic of each module was researched in detail. Combined with the various parts of the signal characteristics, the analysis of various signal processing unit of the information leakage was carried out on. Each module was respectively modeled and simulation analyzed. The DVI encoder / decoder circuit, LED driver circuit is a potential information leaking shows the conclusions of the circuit. Finally, the DVI encoder/decoder circuit and the LED driver display circuit was respectively proposed to be the corresponding video information leakage suppression means.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Terminal equipment > Display device,the display > Large screen displays
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