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Flat-panel display

A flat-panel display and video display technology, applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of video information leakage, flat panel display information security reduction, etc., to reduce TEMPEST problems and improve information security Effect

Inactive Publication Date: 2014-06-11
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Since the leaked electromagnetic waves carry information, there is a definite mapping relationship between the leaked electromagnetic waves naturally generated with the operation of the flat panel display and the information displayed on the LCD screen, and the accompanying leaked electromagnetic waves become a channel for video information leakage, resulting in transient electromagnetic Issues with Transient Electromagnetic Pulse Emanation Surveillance Technology (TEMPEST), resulting in reduced information security for flat panel displays

Method used

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] In addition, the term "and / or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and / or B, which may mean: A exists alone, A and B exist at the same time, There are three cases of B alone. In addition, the character " / " in this article genera...

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Abstract

The invention provides a flat-panel display. According to the embodiment of the invention, a fake cable technique is adopted, that is, a body is additionally provided with a pseudo cable interface connected to a pseudo wire the structure and the length of which are completely equal to those of the original video connecting wire; the newly added pseudo cable and the original video connecting wire are respectively connected to an adapter plate, so that a video pseudo cable signal transmitted on the newly added pseudo cable and a video display signal transmitted on the original video connecting wire are equal in amplitude, waveform, frequency and bandwidth, and are opposite in phase so as to achieve the aim of mutual offsetting of electromagnetic waves, and the TEMPEST (transient electromagnetic pulse emanation surveillance technology) problem of a flat-panel display can be reduced effectively, thereby improving the information safety of the flat-panel display.

Description

【Technical field】 [0001] The invention relates to display technology, in particular to a flat panel display. 【Background technique】 [0002] Flat-panel displays refer to display devices whose ratio of the diagonal length of the display screen to the thickness of the whole machine is greater than 4:1, including liquid crystal displays, plasma displays, electroluminescent displays, vacuum fluorescent displays, flat-panel cathode ray tubes, and luminescent displays. Diodes etc. Because the flat panel display is driven in a digital way, during the operation of the flat panel display, there will usually be accompanying leakage electromagnetic waves due to various distributed electrical factors, that is, conduction emission electromagnetic waves and radiation emission electromagnetic waves. [0003] Since the leaked electromagnetic waves carry information, there is a definite mapping relationship between the leaked electromagnetic waves naturally generated with the operation of t...

Claims

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Application Information

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IPC IPC(8): G09G5/00
Inventor 吕英华
Owner BEIJING UNIV OF POSTS & TELECOMM
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