CN208782823U - Anti-eavesdrop, anti-recording interference shielding device - Google Patents
Anti-eavesdrop, anti-recording interference shielding device Download PDFInfo
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- CN208782823U CN208782823U CN201821060147.XU CN201821060147U CN208782823U CN 208782823 U CN208782823 U CN 208782823U CN 201821060147 U CN201821060147 U CN 201821060147U CN 208782823 U CN208782823 U CN 208782823U
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Abstract
The utility model provides the interference shielding device of a kind of anti-eavesdrop, anti-recording, comprising: supersonic generator, for generating ultrasonic signal；Audio-frequency generator, for generating the audio signal of encryption；Modulator connects the supersonic generator and audio-frequency generator, for generating the interference signal of encryption at the audio signal using the ultrasonic signal as carrier modulation；Ultrasonic array transmitter, for the interference sound pick-up outfit recording of interference signal described in theaomni-directional transmission or eavesdropping.By generating the interference signal of encryption using ultrasonic signal as carrier modulation audio signal；, theaomni-directional transmission interference signal comprehensive using ultrasonic array transmitter covers sound pick-up outfit, and the eavesdropping of interference sound pick-up outfit, recording receive it for noise, guarantee voice messaging safety；Meanwhile pretend and omnidirectional emission interference signal using spherical shell, due to interference signal be ultrasonic signal on the speaker mutually exchanged without influence.
Description
Technical field
The utility model relates to anti-eavesdrop technical fields, more particularly to a kind of anti-eavesdrop, the interference shielding device of anti-recording.
Background technique
With the development of science and technology with the arrival of information age, various steal secret information emerge one after another with the anti-means of stealing secret information, thus
Information privacy technology, especially voice messaging secrecy technology, are increasingly valued by people.And it is directly used in recording shielding and sets
Standby technology and product is all very rare at home and abroad, thus can be described as the blind spot studied at present.On the other hand, current record
Sound technology turns to digital recording, the recording quality of sound pick-up outfit (such as recorder, recording pen) from original tape recording
Also it can according to need to set, record length is several hundred a hours.Meanwhile recording product on the market is numerous, such as
MP3, MP4, mobile phone, voice recorder etc..While recording technology rapid development, it can also certainly will be brought to personal privacy etc.
Serious hidden danger.
However, the existing recording shielding product of existing market (interference shielding device), due to the limitation of technology, is directed to mostly
One direction is interfered, and interference angle is smaller, can only be interfered for the zonule immediately ahead of equipment, then beyond overlay area
Shield effectiveness declines rapidly, can not achieve comprehensive shielding, the voice messaging safety of user cannot be effectively protected, to making
User brings great inconvenience.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of anti-eavesdrops, anti-recording
Interference shielding device, for solve in the prior art interference shielding device can not completely cover sound pick-up outfit, cause voice messaging to hold
The problem of being easily ravesdropping, recording.
In order to achieve the above objects and other related objects, the utility model provides the interference screen of a kind of anti-eavesdrop, anti-recording
Cover device, comprising:
Supersonic generator, for generating ultrasonic signal；
Audio-frequency generator, for generating the audio signal of encryption；
Modulator is separately connected the supersonic generator and audio-frequency generator, for being to carry with the ultrasonic signal
Wave is modulated into the interference signal that the audio signal generates encryption；
Ultrasonic array transmitter, for the interference sound pick-up outfit recording of interference signal described in theaomni-directional transmission or eavesdropping.
It preferably, further include that the supersonic generator, audio-frequency generator, modulator and ultrasonic array transmitting are installed
The spherical shell of device.
Preferably, the spherical shell is tellurion.
Preferably, the spherical shell surface is the netted of hollow out, and spherical shell installation is on the base.
Preferably, the transmitting antenna of the ultrasonic array transmitter is comprehensive is set to transmitting interference letter in spherical shell
Number, so that the interference signal is covered all around sound pick-up outfit to be shielded.
Preferably, the frequency of the ultrasonic array transmitter is 20~30KHZ.
Preferably, the frequency of the audio-frequency generator is 20HZ~20KHZ.
Preferably, it is arranged between the supersonic generator and modulator and/or between audio-frequency generator and modulator and increases
Beneficial control circuit.
Preferably, setting signal amplifying circuit between the modulator and ultrasonic transmitters.
Preferably, further include power module, provide power supply needed for work for all kinds of components in the spherical shell.
As described above, the interference shielding device of the anti-eavesdrop of the utility model, anti-recording, has the advantages that
By the audio signal encrypted using ultrasonic signal as carrier modulation, the interference signal of encryption is generated；Using ultrasound
Wave array transmitter is comprehensive, theaomni-directional transmission interference signal covers sound pick-up outfit, and the eavesdropping of interference sound pick-up outfit, recording make its reception
To for noise, guaranteeing voice messaging safety；Meanwhile pretend using spherical shell and can omnidirectional emission interference signal, by
In interference signal be ultrasonic signal on the speaker mutually exchanged without influence.
Detailed description of the invention
Fig. 1 be shown as a kind of anti-eavesdrop provided by the utility model, anti-recording interference shielding device internal structure block diagram；
Fig. 2 is shown as the interference shielding device operation schematic diagram of a kind of anti-eavesdrop provided by the utility model, anti-recording；
Fig. 3 is shown as the first outline drawing of interference shielding device of a kind of anti-eavesdrop provided by the utility model, anti-recording；
Fig. 4 is shown as the second outline drawing of interference shielding device of a kind of anti-eavesdrop provided by the utility model, anti-recording；
Fig. 5 is shown as the interference shielding device third outline drawing of a kind of anti-eavesdrop provided by the utility model, anti-recording.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
Fig. 1 is please referred to Fig. 5.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to
Cooperate the revealed content of specification, so that those skilled in the art understands and reads, is not intended to limit the utility model
Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model
Revealed technology contents obtain in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", " left side ",
The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model
Scope.
Referring to Fig. 1, for a kind of anti-eavesdrop provided by the utility model, the internal structure frame of the interference shielding device of anti-recording
Figure, comprising:
Supersonic generator 1, for generating ultrasonic signal；
Wherein, the ultrasonic signal frequency is greater than 20KHZ, this ultrasonic frequency, which should reach general human ear, to listen
The frequency arrived.
Audio-frequency generator 2, for generating the audio signal of encryption；
Wherein, the frequency of generation is the audio signal of 4~7khz, and the audio signal is to encrypt sound using Encryption Algorithm
Frequency signal, the key of the Encryption Algorithm are used to generate random alignment table, and the SEED of as corresponding random number generator encrypts sound
Frequency signal can carry out reversely decrypting the audio signal acquisition audio sound encrypted by subsequent key sequence.
Modulator 3 is separately connected the supersonic generator and audio-frequency generator, for being to carry with the ultrasonic signal
Wave is modulated into the interference signal that the audio signal generates encryption；
Wherein, modulators modulate mode can be amplitude shift key modulation etc.；
Ultrasonic array transmitter 4, for the interference sound pick-up outfit recording of interference signal described in theaomni-directional transmission or eavesdropping.
Wherein, the frequency of the ultrasonic array transmitter is 20~30KHZ；
In the present embodiment, Fig. 2, the interference signal of the ultrasonic array transmitter transmitting, due to being also ultrasound are detailed in
Wave signal, if the receiver frequency band upper limit of phonographic recorder is higher, and without good filter module, then the interference signal enters and steals
Surreptitiously recording apparatus voice-grade channel is listened, effective audio-frequency information is interfered, it is made to be unable to reach the purpose that record is stolen in eavesdropping；If sound pick-up outfit has
Standby good filter module or the receiver frequency band upper limit are lower, then brewed ultrasonic wave will be filtered out, but it is brewed to be modulated to this
Encrypted audio signals on ultrasonic wave then enter eavesdropping and steal recording apparatus voice-grade channel, can equally interfere effective audio-frequency information, make it
It is unable to reach the purpose that record is stolen in eavesdropping.Simultaneously as encrypted audio signals are modulated in supersonic band, old friend's ear can not
The sound for hearing brewed ultrasonic wave, facilitates user to exchange.
It on that basi of the above embodiments, further include that the supersonic generator, audio-frequency generator, modulator are installed and surpassed
The spherical shell of acoustic wave array transmitter, the spherical shell surface is the netted of hollow out, and the spherical shell is mounted on base
On seat, as shown in Figure 3, Figure 4, the circular hole of hollow out, netted etc. facilitate interference signal transmitting transmission；In addition, the spherical shell
For tellurion, as shown in figure 5, pretending due to passing through globe surface, inside is equipped with the component for issuing interference signal, on the one hand
On the other hand good appearance, easy to carry or use can reach the purpose of camouflage or decoration, there are also the interference convenient for transmitting
The covering of signal full method, full angle, makes the interference signal cover all around sound pick-up outfit to be shielded.
Preferably, it is arranged between the supersonic generator and modulator and/or between audio-frequency generator and modulator and increases
Beneficial control circuit ensures that the amplitude between ultrasonic signal and audio signal matches by gain control circuit, it is ensured that normal to adjust
System.
Preferably, setting signal amplifying circuit between the modulator and ultrasonic transmitters is convenient for subsequent ultrasonic wave array
The high-power transmitting interference signal (ultrasonic signal) of transmitter, meanwhile, increasing power emission interference signal ensures to interfere the area of coverage
Domain and intensity, it is ensured that interference effect is best.
On the basis of the above, further include setting spherical shell inside be supersonic generator, audio-frequency generator, modulator with
And power supply needed for the offer work of ultrasonic array transmitter, convenient for its normal, steady operation.
In conclusion generating the interference signal of encryption by the audio signal encrypted using ultrasonic signal as carrier modulation；
, theaomni-directional transmission interference signal comprehensive using ultrasonic array transmitter covers sound pick-up outfit, the eavesdropping of interference sound pick-up outfit, recording
It is received for noise, guarantee voice messaging safety；Meanwhile pretend using spherical shell and can omnidirectional emission interfere
Signal, due to interference signal be ultrasonic signal on the speaker mutually exchanged without influence.So the utility model effectively overcomes
Various shortcoming in the prior art and have high industrial utilization value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (8)
1. the interference shielding device of a kind of anti-eavesdrop, anti-recording characterized by comprising
It is installed on the intracorporal supersonic generator of spherical shell, audio-frequency generator, modulator and ultrasonic array transmitter；
The supersonic generator, for generating ultrasonic signal；
The audio-frequency generator, for generating the audio signal of encryption；
The modulator is separately connected the supersonic generator and audio-frequency generator, for being to carry with the ultrasonic signal
Wave is modulated into the interference signal that the audio signal generates encryption；
The ultrasonic array transmitter, for the interference sound pick-up outfit recording of interference signal described in theaomni-directional transmission or eavesdropping；And
The spherical shell is tellurion.
2. the interference shielding device of anti-eavesdrop according to claim 1, anti-recording, which is characterized in that the spherical shell body surface
Face is the netted of hollow out, and spherical shell installation is on the base.
3. the interference shielding device of anti-eavesdrop according to claim 1, anti-recording, which is characterized in that the ultrasonic array
The transmitting antenna of transmitter is comprehensive to be set in spherical shell and emits interference signal, make the interference signal cover all around to
The sound pick-up outfit of shielding.
4. the interference shielding device of anti-eavesdrop according to claim 1, anti-recording, which is characterized in that the ultrasonic array
The frequency of transmitter is 20~30KHZ.
5. the interference shielding device of anti-eavesdrop according to claim 1, anti-recording, which is characterized in that the audio-frequency generator
Frequency be 4~7KHZ.
6. the interference shielding device of anti-eavesdrop according to claim 1, anti-recording, which is characterized in that the ultrasonic wave occurs
Gain control circuit is provided between device and modulator or/and between the audio-frequency generator and modulator.
7. the interference shielding device of anti-eavesdrop according to claim 1, anti-recording, which is characterized in that the modulator and super
Setting signal amplifying circuit between acoustic wave array transmitter.
8. the interference shielding device of anti-eavesdrop according to claim 1, anti-recording, which is characterized in that it further include power module,
Power supply needed for work is provided for all kinds of components in the spherical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821060147.XU CN208782823U (en) | 2018-07-05 | 2018-07-05 | Anti-eavesdrop, anti-recording interference shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821060147.XU CN208782823U (en) | 2018-07-05 | 2018-07-05 | Anti-eavesdrop, anti-recording interference shielding device |
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| Publication Number | Publication Date |
|---|---|
| CN208782823U true CN208782823U (en) | 2019-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821060147.XU Active CN208782823U (en) | 2018-07-05 | 2018-07-05 | Anti-eavesdrop, anti-recording interference shielding device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830147A (en) * | 2019-07-11 | 2020-02-21 | 东莞市普乔电子科技有限公司 | Anti-eavesdropping and anti-stealing recording device |
| WO2021043107A1 (en) * | 2019-09-02 | 2021-03-11 | 中兴通讯股份有限公司 | Method, apparatus and system for preventing eavesdropping and recording in conference |
| CN113315599A (en) * | 2021-05-26 | 2021-08-27 | 重庆清文科技有限公司 | Non-inductive anti-recording method and system |
| CN113539225A (en) * | 2021-07-22 | 2021-10-22 | 北京电信易通信息技术股份有限公司 | On-vehicle anti-eavesdropping device based on strong acoustic transducer array |
| CN114567409A (en) * | 2022-03-09 | 2022-05-31 | 电子科技大学 | Anti-eavesdropping device |
| WO2023123451A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference apparatus |
-
2018
- 2018-07-05 CN CN201821060147.XU patent/CN208782823U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110830147A (en) * | 2019-07-11 | 2020-02-21 | 东莞市普乔电子科技有限公司 | Anti-eavesdropping and anti-stealing recording device |
| WO2021043107A1 (en) * | 2019-09-02 | 2021-03-11 | 中兴通讯股份有限公司 | Method, apparatus and system for preventing eavesdropping and recording in conference |
| CN113315599A (en) * | 2021-05-26 | 2021-08-27 | 重庆清文科技有限公司 | Non-inductive anti-recording method and system |
| CN113539225A (en) * | 2021-07-22 | 2021-10-22 | 北京电信易通信息技术股份有限公司 | On-vehicle anti-eavesdropping device based on strong acoustic transducer array |
| CN113539225B (en) * | 2021-07-22 | 2022-02-11 | 北京电信易通信息技术股份有限公司 | On-vehicle anti-eavesdropping device based on strong acoustic transducer array |
| WO2023123451A1 (en) * | 2021-12-31 | 2023-07-06 | 深圳市安卫普科技有限公司 | Interference apparatus |
| CN114567409A (en) * | 2022-03-09 | 2022-05-31 | 电子科技大学 | Anti-eavesdropping device |
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