CN205666914U - Computer video interference unit - Google Patents
Computer video interference unit Download PDFInfo
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- CN205666914U CN205666914U CN201620793687.3U CN201620793687U CN205666914U CN 205666914 U CN205666914 U CN 205666914U CN 201620793687 U CN201620793687 U CN 201620793687U CN 205666914 U CN205666914 U CN 205666914U
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Abstract
The utility model discloses a computer video interference unit, the video interference ware includes, treater, power, EMC wave filter, adc, emit antenna, signal close way, random signal and produce circuit, VGA interface and data line, the VGA interface of video interference ware is single VGA interface, just the video interference ware still includes the data line of bidirectional data, the data line be equipped with the linked computers host computer the main frame interface, be used for connecting the display interface of display and be used for connecting the video interference ware VGA interface of video interference ware, computer video interference unit, just can realize the input of computer signal and the output of encrypting interfering signal, its simple structure, more importantly adoption with an interface and a data line the utility model discloses a computer video interference unit can not produce the snowflake on user's display, can protect user's eyesight, reinforcing user experience.
Description
Technical field
The present invention relates to a kind of electronic information protection device, more particularly, it relates to a kind of computerized information protection device.
Background technology
Computer equipment operationally can produce electromagnetic exposure in various degree.The electricity of various digital circuits in such as main frame
The electromagnetic exposure that magnetic leakage, the electromagnetic exposure of display video signal, keyboard switch cause.The mode of electromagnetic exposure has two at present
Kind.One is to radiate in the form of an electromagnetic wave, referred to as radiation leaks.This radiation is the various biographies of the inside having computer
Defeated line, including the circuit parasitism in galley, launches by means of the above-mentioned transmission line playing antenna effect.Another kind is computer
The electromagnetic wave that system is revealed is coupled to various circuit and metal tube passes to away, is referred to as conducting leakage.In computer system
Telephone wire, upper and lower conduit road and caliduct, the ground wire etc. that power line, machine room do not have.Useful information can in certain condition
Reappeared by accepting signal, caused information leakage.For example, the CRT terminal of a common computer radiated with
The electric wave of useful information, early 1000 meters can also receive and reappear in addition.Owing to utilizing the electromagnetic exposure of computer equipment to obtain
This means of information bring a lot of potential safety hazard to enterprise and country.At present, at present, the calculating used for this electromagnetic exposure
Machine video interference unit all uses double USB interface, and the signal that a USB interface input computer sends, another USB interface exports
Through the signal that video interference unit processed.But this pair of USB interface mode can produce snowflake on user display, makes for a long time
With damaging the vision of user, Consumer's Experience is the best.
Summary of the invention
In view of this, the purpose of this utility model seeks to provide a kind of computer video interference unit USB interface output side
Formula, makes VGA the most not produce snowflake when exporting processed signal, reaches to protect user's vision, improves user's body
The purpose tested.For achieving the above object, the technical solution adopted in the utility model is as follows: a kind of computer video interference unit, institute
Stating video interference unit to include, processor, power supply, EMC wave filter, analog-digital converter, transmitting antenna, signal close road, stochastic signal
Producing circuit, USB interface and data wire, the USB interface of described video interference unit is single USB interface, and described video interference unit
Also include the data wire of bi-directional transfer of data, described data wire be provided with connect main frame computer host interface, for
Connect the display interface device of display and for connecting the video interference unit USB interface of video interference unit；So by VGA is connect
The structure of modification of mouth, uses single USB interface design, bidirectional data line of arranging in pairs or groups.Computer signal is inputted by this USB interface,
Exported on display by this VGA again.
Described computer video interference unit, described computer video interference unit is provided with four road random signal generating circuits,
It is respectively A random signal generating circuit, B random signal generating circuit, C random signal generating circuit and D stochastic signal and produces electricity
Road, described A and B random sequence signal produce keying sequence generator that circuit includes that reference clock is connected with reference clock and
The signal amplifier that keying sequence generator connects；Described C random sequence signal generation circuit and D random sequence signal produce
Circuit includes the wide-band modulation that the keying sequence generator that reference clock, reference clock connect is connected with keying sequence generator
Broadband amplifier that device is connected with wideband modulator and end amplifirer: described four road random sequence numbers produce the output of circuit
Signal exports to launching antenna after signal closes Lu Zhonghe road.
Use computer video interference unit described in the utility model；Meter is can be achieved with an interface and a data line
The input of calculation machine signal, and the output of encryption interference signal, its simple in construction, it is often more important that use calculating of the present utility model
Machine video interference unit will not produce snowflake on the display of user, it is possible to protection user's vision, strengthens Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments described in invention, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of computer video interference unit external connection schematic diagram that Fig. 1 provides for embodiment；
The circuit theory diagrams of a kind of computer video interference unit that Fig. 2 provides for embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in this utility model embodiment is carried out clear,
It is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into protection scope of the present invention.
A kind of computer video interference unit that the present embodiment provides, a kind of computer video interference unit, described video disturbs
Device includes, processor, power supply, EMC wave filter, analog-digital converter, transmitting antenna, signal close road, random signal generating circuit,
USB interface and data wire, the USB interface of described video interference unit is single USB interface, and described video interference unit also includes two-way
The data wire of transmission data, described data wire is provided with and connects the computer host interface of main frame, for connecting display
Display interface device and for connecting the video interference unit USB interface of video interference unit.
Computer video interference unit described in the present embodiment, is provided with four road random signal generating circuits, and respectively A believes at random
Number produce circuit, B random signal generating circuit, C random signal generating circuit and D random signal generating circuit, described A and B with
Machine sequence signal produces keying sequence generator and the keying sequence generation that circuit includes that reference clock is connected with reference clock
The signal amplifier that device connects；Described C random sequence signal produces the circuit of circuit and the generation of D random sequence signal and includes benchmark
The wideband modulator that is connected with keying sequence generator of keying sequence generator that clock, reference clock connect and wide-band modulation
The broadband amplifier that device is connected and end amplifirer: the output signal that described four road random sequence numbers produce circuit closes road at signal
Export to launching antenna behind Zhong He road.
Computer video interference unit described in the present embodiment, can be achieved with trusted computer with an interface and a data line
Number input, and encryption interference signal output, its simple in construction, it is often more important that use computer video of the present utility model
Interference unit will not produce snowflake on the display of user, it is possible to protection user's vision, strengthens Consumer's Experience.
Claims (2)
1. a computer video interference unit, described video interference unit includes, processor, power supply, EMC wave filter, analog digital conversion
Device, transmitting antenna, signal close road, random signal generating circuit, USB interface and data wire, it is characterised in that described video disturbs
The USB interface of device is single USB interface, and described video interference unit also includes the data wire of bi-directional transfer of data, described data wire
It is provided with and connects the computer host interface of main frame, for connecting the display interface device of display and doing for connecting video
Disturb the video interference unit USB interface of device.
2. computer video interference unit as claimed in claim 1, it is characterised in that described computer video interference unit is provided with four
Road random signal generating circuit, respectively A random signal generating circuit, B random signal generating circuit, C stochastic signal produce electricity
Road and D random signal generating circuit, described A and B random sequence signal produces circuit and includes that reference clock is connected with reference clock
The signal amplifier that is connected with keying sequence generator of keying sequence generator；Described C random sequence signal produce circuit and
The circuit that D random sequence signal produces includes keying sequence generator and the keying sequence product that reference clock, reference clock connect
Broadband amplifier that the wideband modulator that raw device connects is connected with wideband modulator and end amplifirer: described four road stochastic orderings
Row number produce the output signal of circuit and export to launching antenna after signal closes Lu Zhonghe road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793687.3U CN205666914U (en) | 2016-07-27 | 2016-07-27 | Computer video interference unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793687.3U CN205666914U (en) | 2016-07-27 | 2016-07-27 | Computer video interference unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666914U true CN205666914U (en) | 2016-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620793687.3U Active CN205666914U (en) | 2016-07-27 | 2016-07-27 | Computer video interference unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205666914U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106599707A (en) * | 2016-12-26 | 2017-04-26 | 长沙准光里电子科技有限公司 | Computer video interference unit |
| 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 |
-
2016
- 2016-07-27 CN CN201620793687.3U patent/CN205666914U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106599707A (en) * | 2016-12-26 | 2017-04-26 | 长沙准光里电子科技有限公司 | Computer video interference unit |
| 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |