CN106406457A - Electromagnetic interference device for preventing electromagnetic information leakage and implementation method - Google Patents
Electromagnetic interference device for preventing electromagnetic information leakage and implementation method Download PDFInfo
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- CN106406457A CN106406457A CN201610740016.5A CN201610740016A CN106406457A CN 106406457 A CN106406457 A CN 106406457A CN 201610740016 A CN201610740016 A CN 201610740016A CN 106406457 A CN106406457 A CN 106406457A
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
- G06F1/182—Enclosures with special features, e.g. for use in industrial environments; grounding or shielding against radio frequency interference [RFI] or electromagnetical interference [EMI]
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Abstract
The invention discloses an electromagnetic interference device for preventing electromagnetic information leakage and an implementation method. The electromagnetic interference device comprises an electromagnetic interference signal generation part and an information transmission cable, wherein the electromagnetic interference signal generation part is integrally arranged on a port of one end of the information transmission cable or is simultaneously arranged on ports of two ends of the information transmission cable, and a power supply positive electrode and a power supply negative electrode of the electromagnetic interference signal generation part are led out of the ports. According to the implementation method of the electromagnetic interference device, the electromagnetic interference signal generation part is also integrally arranged on the port of one end or the ports of the two ends of the information transmission cable, so that accurate interference of an electromagnetic interference signal on electromagnetic leakage of an information transmission interface is achieved, and the integration of the electromagnetic interference signal generation part and an information processing equipment part is achieved.
Description
Technical field
The present invention relates to a kind of electromagnetic interference device and method, especially one kind are used for protecting computer electromagnetic information leakage
Electromagnetic interference device and method.
Background technology
The protection of computerized information electromagnetic leakage is one of important topic of information security field, and conventional means of defence is main
There are shield technology, TEMPEST technology and vision signal perturbation technique, wherein vision signal perturbation technique is to be of relatively low cost,
The preferable method of feasibility, stability.And in reality, much have privacy requirements to be not easy to build the office space of screened room again
Exactly employing this vision signal interference unit as the anti-electromagnetic information leakage of normal office computer means.
But problem is formerly technology, as disclosed in notification number CN2745097Y patent document " information leakage protector " and
Disclosed in notification number CN201352350Y, the protection countermeasure set described by patent document " computer information interference unit " all adopts
A kind of signal conflicting mode of extensive style, that is, interference unit be placed on computer side, the interference signal sending can be larger at one
In the range of computer is integrally wrapped in, usual Net long wave radiation radius in 0.5-1 rice, because its Net long wave radiation radius is big, by force
Degree is high, computer operator be impacted will certainly and damage in psychology and physiologically.
Formerly patent document " safety protection display " and publication number disclosed in technology publication number CN1658274A
Patent document disclosed in CN102156512A " computer electromagnetic leakage relevant interference system and the liquid crystal adding this system
Show device " achieve Low emissivity and accurate interference although being integrally disposed in interference unit inside liquid crystal display, but this design
On the one hand the versatility of liquid crystal display is caused to harm, on the other hand this kind of dedicated display must lead to list less because of demand
Individual product cost height is looked forward to and is difficult to actual production.
Content of the invention
The technical problem to be solved is aiming at the defect that above-mentioned formerly technology exists, and providing one kind to have can
Realize Low emissivity and accurate interference, again need not be to the countermeasure set of any transformation of make displays and method.
The technical scheme is that and be achieved in that：
A kind of device of anti-electromagnetic information leakage, including electromagnetic interference signal generating means and information transfer cable, wherein said
Electromagnetic interference signal generating means is integrated on one end port of described information transmission cable, or is integrated in transmission line of information simultaneously
On the two ends port of cable；The power line both positive and negative polarity of described electromagnetic interference signal generating means is from the port of described information transmission cable
Middle extraction.
Preferably, the rgb signal needing in described electromagnetic interference signal generating means or row/field sync signal or clock letter
Draw number all from the port of described information transmission cable.
Preferably, a power supply indicator, described power supply instruction are additionally provided with described electromagnetic interference signal generating means
The both positive and negative polarity of lamp is connected on the power line both positive and negative polarity of described electromagnetic interference signal generating means.
Preferably, described electromagnetic interference signal generating means is symmetrically integrated in two symmetrical ends of information transfer cable
On mouth.
A kind of implementation method of anti-electromagnetic information leakage, by being integrated in information transfer by electromagnetic interference signal generating means
On one end port of cable, or it is integrated on the two ends port of information transfer cable simultaneously, to realize electromagnetic interference signal to letter
The accurate interference of breath coffret electromagnetic leakage, and electromagnetic interference signal generating means and messaging device part itself
Integrated；The dc source needing in wherein said electromagnetic interference signal generating means draws from the port of described information transmission cable
Go out.
Preferably, the rgb signal needing in described electromagnetic interference signal generating means or row/field sync signal or clock letter
Draw number all from the port of described information transmission cable.
Preferably, being additionally provided with a power supply indicator in described electromagnetic interference signal generating means, for indicating electromagnetism
Whether interference signal generating means is in running order.
The beneficial effects of the present invention is：
1. due to interface radiation be electromagnetic information leakage primary radiation source, by integrally disposed for electromagnetic interference signal generating means in
Can achieve on the port of information transfer cable and precisely disturb.
2. because the port of information transfer cable just connects over the display, so also may be used to radiation sources other in display
To realize Low emissivity interference.
3. electromagnetic interference signal generating means described in can be respectively arranged at the two ends port of cable, so to host video
In interface and main frame, the electromagnetic information leakage of other radiation can also realize more accurately Low emissivity interference.
It is 4. by making the integrated of interference part and messaging device part itself, that is, integrated with information transfer cable,
The forced use of achievable interference unit, thus reduce the risk artificially abandoned to a certain extent.
Brief description
Fig. 1 is USB interface pinouts.
Fig. 2 is the irrelevant type electromagnetic interference apparatus structure schematic diagram with VGA cable port as carrier.
Fig. 3 is the relationship type electromagnetic interference apparatus structure schematic diagram with VGA cable port as carrier.
Fig. 4 is HDMI pinouts.
Fig. 5 is the irrelevant type electromagnetic interference apparatus structure schematic diagram with HDMI cable port as carrier.
Fig. 6 is the relationship type electromagnetic interference apparatus structure schematic diagram with HDMI cable port as carrier.
In figure：100th, electromagnetic interference signal generating means, 200, VGA cable port, 300, HDMI cable port, 400, electricity
Source indicator lamp.
Specific embodiment
Fig. 1 show USB interface pinouts, and to USB interface, each Pin locations and title give and be specifically defined in figure.
It is the irrelevant type with VGA cable port as carrier for the first embodiment of first embodiment of the invention shown in Fig. 2
Electromagnetic interference apparatus structure schematic diagram.A kind of electromagnetic interference device of anti-electromagnetic information leakage as shown in Figure 2, including electromagnetic interference
Signal generator part 100 and information transfer cable, wherein said electromagnetic interference signal generating means 100 integrally disposed in VGA line
On cable-end mouth 200, both can be only arranged on one end port of VGA cable it is also possible to be arranged at VGA cable two ends port simultaneously
On, the power positive cathode of wherein electromagnetic interference signal generating means 100 is drawn from described VGA cable port 200.Further relatively
Good, described electromagnetic interference signal generating means 100 is symmetrically integrated on the two ends port of VGA cable.
Shown in Fig. 3 be first embodiment of the invention second embodiment with VGA cable port as carrier relationship type electricity
Magnetic disturbance apparatus structure schematic diagram.A kind of electromagnetic interference device of anti-electromagnetic information leakage as shown in Figure 3, including electromagnetic interference letter
Number generating means 100 and information transfer cable, wherein said electromagnetic interference signal generating means 100 integrally disposed in VGA cable
On port 200, both can be only arranged on one end port of VGA cable it is also possible to be arranged at the two ends port of VGA cable simultaneously
On, the power positive cathode of wherein electromagnetic interference signal generating means 100 is drawn from described VGA cable port 200, wherein said
Row/the field sync signal needing in electromagnetic interference signal generating means 100 is drawn from VGA cable port 200.Preferable further
, also the corresponding three groups of rgb signals of VGA cable port 200 pin 1,2,3 can be drawn as sync correlation signal in this embodiment
Enter in electromagnetic interference signal generating means 100.Further preferably, described electromagnetic interference signal generating means 100 symmetrically
It is integrated on the two ends port of VGA cable.
In above first embodiment first and second embodiment, further in described electromagnetic interference signal generating means 100
It is additionally provided with a power supply indicator 400, the both positive and negative polarity of described power supply indicator 400 is connected to described electromagnetic interference signal generating unit
On the power positive cathode of part 100.
Fig. 4 show HDMI pinouts, and to HDMI, each Pin locations and title give and be specifically defined in figure.
It is the irrelevant type with HDMI cable port as carrier for the first embodiment of second embodiment of the invention shown in Fig. 5
Electromagnetic interference apparatus structure schematic diagram.A kind of electromagnetic interference device of anti-electromagnetic information leakage as shown in Figure 5, including electromagnetic interference
Signal generator part 100 and information transfer cable, wherein said electromagnetic interference signal generating means 100 integrally disposed in HDMI wire
On cable-end mouth 300, both can be only arranged on one end port of HDMI cable it is also possible to be arranged at HDMI cable two ends end simultaneously
On mouth, the power positive cathode of wherein electromagnetic interference signal generating means 100 is drawn from described HDMI cable port 300.Enter one
Step is preferably, described electromagnetic interference signal generating means 100 is symmetrically integrated on the two ends port of HDMI cable.
Shown in Fig. 6 be second embodiment of the invention second embodiment with HDMI cable port as carrier relationship type electricity
Magnetic disturbance apparatus structure schematic diagram.A kind of electromagnetic interference device of anti-electromagnetic information leakage as shown in Figure 6, including electromagnetic interference letter
Number generating means 100 and information transfer cable, wherein said electromagnetic interference signal generating means 100 integrally disposed in HDMI cable
On port 300, both can be only arranged on one end port of HDMI cable it is also possible to be arranged at HDMI cable two ends port simultaneously
On, the power positive cathode of wherein electromagnetic interference signal generating means 100 is drawn from described HDMI cable port 300, wherein institute
State the clock signal needing in electromagnetic interference signal generating means 100 to draw from HDMI cable port 300.Preferable further
, also can be using the corresponding three groups of data-signals of HDMI cable port 300 pin 1,4,7 as sync correlation signal in this embodiment
It is incorporated in electromagnetic interference signal generating means 100.Further preferably, described electromagnetic interference signal generating means 100 is symmetrical
Be integrated on the two ends port of HDMI cable.
In above second embodiment first and second embodiment, further in described electromagnetic interference signal generating means 100
It is additionally provided with a power supply indicator 400, the both positive and negative polarity of described power supply indicator 400 is connected to described electromagnetic interference signal generating unit
On the power positive cathode of part 100.
Each in first embodiment, in irrelevant type electromagnetic interference device, electromagnetic interference signal produces both the above embodiment
Raw part 100 at least includes white noise interference signal generation module and white noise interference signal transmitter module.
Each in second embodiment, in relationship type electromagnetic interference device, electromagnetic interference signal produces both the above embodiment
Part 100 at least includes sync correlation signal extraction module, and it is connected with information signal pin in VGA or HDMI port, extracts
The sync correlation signal composition of described information signal；Synchronous relevant interference signal generation module, according to the information signal being extracted
Sync correlation signal composition, generate have than described information signal as electromagnetic-wave leakage in the case of, electromagnetic intensity is more
Strong relationship type electromagnetic interference signal；And the output module of this relationship type electromagnetic interference signal, its output is by described synchronous related
The relationship type electromagnetic interference signal that interference signal generation module is generated.
As shown in Fig. 2, Fig. 3, Fig. 5, Fig. 6, a kind of implementation method of anti-electromagnetic information leakage, by by electromagnetic interference signal
Generating means 100 integrally disposed on VGA cable port 200 or HDMI cable port 300, both can be only arranged at VGA or
It is also possible to be arranged on VGA or HDMI cable two ends port simultaneously, wherein electromagnetic interference signal produces for one end port of HDMI cable
The power positive cathode of raw part 100 is drawn, thus realizing electromagnetism from described VGA cable port 200 or HDMI cable port 300
At the accurate interference to information transmission interface electromagnetic leakage for the interference signal, and electromagnetic interference signal generating means 100 and information
Reason part of appliance, that is, VGA or HDMI cable port is integrated, needs in wherein said electromagnetic interference signal generating means 100
Dc source is drawn from described VGA or HDMI cable port.
Further preferably, the rgb signal needing in electromagnetic interference signal generating means 100 described in above-mentioned implementation
Or row/field sync signal or clock signal draw all from described VGA or HDMI cable port.
Further preferably, being additionally provided with one in electromagnetic interference signal generating means 100 described in above-mentioned implementation
Power supply indicator 400, whether in running order for indicating electromagnetic interference signal generating means 100.
In implementation above method, during as irrelevant type electromagnetic interference, electromagnetic interference signal generating means 100 at least includes
White noise interference signal generation module and white noise interference signal transmitter module.During as relationship type electromagnetic interference, electromagnetic interference
Signal generator part 100 at least includes sync correlation signal extraction module, itself and information signal pin phase in VGA or HDMI port
Even, extract the sync correlation signal composition of described information signal；Synchronous relevant interference signal generation module, according to the letter being extracted
The sync correlation signal composition of information signal, generate have than described information signal as electromagnetic-wave leakage in the case of, electromagnetic wave
The higher relationship type electromagnetic interference signal of intensity；And the output module of this relationship type electromagnetic interference signal, its output is by described same
The relationship type electromagnetic interference signal that step relevant interference signal generation module is generated.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto.
Any electromagnetism by the anti-electromagnetic information leakage on integrally disposed for the electromagnetic interference signal generating means cable end mouth in information transfer
Countermeasure set or method all should belong to the protection domain of the technology design illustrated by the present invention, any skill being familiar with the art
Art personnel the invention discloses technical scope in, technology according to the present invention scheme and its inventive concept in addition equivalent or
Change, all should be included within the scope of the present invention.
Claims (7)
1. a kind of electromagnetic interference device of anti-electromagnetic information leakage, including electromagnetic interference signal generating means and transmission line of information
Cable it is characterised in that：Described electromagnetic interference signal generating means is integrated on one end port of described information transmission cable, or with
When be integrated on the two ends port of information transfer cable；The power positive cathode of described electromagnetic interference signal generating means is from described letter
Draw in the port of breath transmission cable.
2. electromagnetic interference device according to claim 1 it is characterised in that：Need in described electromagnetic interference signal generating means
The rgb signal wanted or row/field sync signal or clock signal are drawn all from the port of described information transmission cable.
3. electromagnetic interference device according to claim 2 it is characterised in that：In described electromagnetic interference signal generating means also
It is provided with a power supply indicator, the both positive and negative polarity of described power supply indicator is connected to the power supply of described electromagnetic interference signal generating means
On both positive and negative polarity.
4. the electromagnetic interference device according to claim 1 or 2 or 3 it is characterised in that：Described electromagnetic interference signal generating unit
Part is symmetrically integrated on two symmetrical ports of information transfer cable.
5. a kind of implementation method of anti-electromagnetic information leakage it is characterised in that：By will be integrated for electromagnetic interference signal generating means
On one end port of information transfer cable, or it is integrated on the two ends port of information transfer cable simultaneously, to realize electromagnetism and to do
Disturb the accurate interference to information transmission interface electromagnetic leakage for the signal, and electromagnetic interference signal generating means and messaging device
Part itself integrated；The dc source needing in wherein said electromagnetic interference signal generating means is from described information transmission cable
Port in draw.
6. method according to claim 5 it is characterised in that：The RGB needing in described electromagnetic interference signal generating means
Signal or row/field sync signal or clock signal are drawn all from the port of described information transmission cable.
7. according to claim 5 or 6 methods describeds it is characterised in that：It is additionally provided with described electromagnetic interference signal generating means
One power supply indicator, whether in running order for indicating electromagnetic interference signal generating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740016.5A CN106406457A (en) | 2016-08-27 | 2016-08-27 | Electromagnetic interference device for preventing electromagnetic information leakage and implementation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740016.5A CN106406457A (en) | 2016-08-27 | 2016-08-27 | Electromagnetic interference device for preventing electromagnetic information leakage and implementation method |
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| Publication Number | Publication Date |
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| CN106406457A true CN106406457A (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610740016.5A Pending CN106406457A (en) | 2016-08-27 | 2016-08-27 | Electromagnetic interference device for preventing electromagnetic information leakage and implementation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116347151A (en) * | 2023-05-30 | 2023-06-27 | 天津安力信通讯科技有限公司 | HDMI self-adaptive video interference device |
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| CN1930819A (en) * | 2004-05-24 | 2007-03-14 | 日本电信电话株式会社 | Information leakage prevention device and information leakage prevention method |
| CN201590084U (en) * | 2010-03-22 | 2010-09-22 | 山东超越数控电子有限公司 | Computer interface capable of preventing information leaked |
| CN102012798A (en) * | 2010-11-26 | 2011-04-13 | 中国航天科工集团第二研究院七○六所 | Photoelectric-isolating low-electromagnetic leakage display interface |
| CN204928115U (en) * | 2015-08-31 | 2015-12-30 | 北京四达瑞康科技有限公司 | Information system entry end electromagnetic pulse synthesizes protective equipment |
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2016
- 2016-08-27 CN CN201610740016.5A patent/CN106406457A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930819A (en) * | 2004-05-24 | 2007-03-14 | 日本电信电话株式会社 | Information leakage prevention device and information leakage prevention method |
| CN201590084U (en) * | 2010-03-22 | 2010-09-22 | 山东超越数控电子有限公司 | Computer interface capable of preventing information leaked |
| CN102012798A (en) * | 2010-11-26 | 2011-04-13 | 中国航天科工集团第二研究院七○六所 | Photoelectric-isolating low-electromagnetic leakage display interface |
| CN204928115U (en) * | 2015-08-31 | 2015-12-30 | 北京四达瑞康科技有限公司 | Information system entry end electromagnetic pulse synthesizes protective equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116347151A (en) * | 2023-05-30 | 2023-06-27 | 天津安力信通讯科技有限公司 | HDMI self-adaptive video interference device |
| CN116347151B (en) * | 2023-05-30 | 2023-09-15 | 天津安力信通讯科技有限公司 | HDMI self-adaptive video interference device |
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Application publication date: 20170215 |
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