flat panel display

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

CN103854626BInactive Publication Date: 2015-12-30BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-12-30
Estimated Expiration
Not applicable · inactive patent

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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.
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Description

Technical field

[0001] The present invention relates to display technology, in particular to a flat panel display.

Background technique

[0002] Flat panel displays refer to display devices with a ratio of the diagonal length of the display screen to the thickness of the whole machine greater than 4:1, including liquid crystal displays, plasma displays, electroluminescence displays, vacuum fluorescent displays, flat-panel cathode ray tubes and light-emitting diodes, etc. Since the flat panel display is driven in a digital manner, during the operation of the flat panel display, accompanying leakage electromagnetic waves are usually generated due to various distributed electrical factors, that is, conduction emission electromagnetic waves and radiation emission electromagnetic waves.

[0003] Since the leakage electromagnetic wave carries information, there is a definite mapping relationship between the leakage electromagnetic wave naturally generated with the operation o...

Examples

Embodiment Construction

[0036] In order to make the purposes, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] In addition, the term "and / or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and / or B, it can mean that A exists alone, A and B exist at the same time, There are three cases of B alone. In addition, the charact...