CN109429036A - A kind of counter system of video monitoring transmission - Google Patents
A kind of counter system of video monitoring transmission Download PDFInfo
- Publication number
- CN109429036A CN109429036A CN201710777983.3A CN201710777983A CN109429036A CN 109429036 A CN109429036 A CN 109429036A CN 201710777983 A CN201710777983 A CN 201710777983A CN 109429036 A CN109429036 A CN 109429036A
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- video
- signal
- transmission
- module
- vision signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/60—Jamming involving special techniques
- H04K3/62—Jamming involving special techniques by exposing communication, processing or storing systems to electromagnetic wave radiation, e.g. causing disturbance, disruption or damage of electronic circuits, or causing external injection of faults in the information
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Multimedia (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses a kind of counter systems of video monitoring transmission, comprising: small-signal receiving module, video signal format detection module, video reception and memory module, vision signal interference module, vision signal transmitting module.The characteristics of system adaptive technique reconnaissance measure and demand, are broken through for the Video transmission system of particular video frequency monitoring system, and realize following items function: 1. obtain the vision signal that the Video transmission system is transmitted；2. the vision signal for interfering the Video transmission system to be transmitted；3. the vision signal other than the acquired video of the video monitoring system is inputted the system.
Description
Technical field
The invention belongs to the wireless communication technology field in technical search measure, in particular to a kind of video monitoring transmission
Counter system.
Background technique
Technical search measure is intelligence agency to track down the needs of specific criminal offence, according to the provisions of the relevant regulations issued by the State, warp
Cross stringent examination & approval, a kind of particular technology means taken.Technical search behavior is the reconnaissance of application technology reconnaissance measure, is led to
Often including electronic interception, telephone monitoring, electronic monitoring, the secret secret know-how hand such as take pictures, record a video, carrying out mail inspection
Section." criminal procedure law " second compile Section 8 the 148th article of chapter 2, to take technical search measure case range,
Program and executing subject etc. have done specific regulation, specific as follows:
Public security organ after putting on record, for endanger national security crime, terrorist activity crime, underworld property tissue violate
The crime case of guilty, great Drug-related crimes or other serious harm societies, according to the needs detected crime, by stringent batch
Quasi- formality can take technical search measure.People's procuratorate after putting on record, for great corruption, crime of bribery case with
And the terrible crimes case of the citizen's personal right that constitutes a serious infringement for implementation of taking advantage of one's position and power, according to the needs detected crime, by tight
The approval process of lattice, can take technical search measure, and related organ is handed over to execute according to the rules；Chase ordered to arrest or ratified,
It determines fugitive suspect, the defendant arrested, by approval, technical search measure necessary to chasing can be taken.
From the point of view of juridical practice, technical search measure has the following characteristics that first is that secret.Reconnaissance itself is implemented
State for, secret reconnaissance and open reconnaissance can be divided into.Technical search measure high, technology as reply concealment
Property strong crime and a kind of reconnaissance means for growing up, be mostly to take the behavior not known by society or party, it is this secret
Close reconnaissance not only maintains secrecy to party, but also insider is also required to abide by confidentiality obligations.Second is that technical.Why
Referred to as technical search measure, exactly such reconnaissance are needed to complete by high in technological content the equipment or instrument mostly, such as be clapped
According to, recording, monitor etc..It only just can guarantee the quality and effect of the evidence of acquisition by high-tech equipment.Third is that mandatory.
It carries out more, agrees to without party, in the unwitting situation of party under secrecy since technical search measure belongs to
It carries out, rather than for the voluntary selection of party, thus has the characteristics that for party enforceable.Due to technical search
The These characteristics of measure, for control crime, it is more effective that it as reconnaissance means compares other means, with more being directed to
Property, it can be avoided counter-reconnaissance measure and other external disturbances from suspect, improve the efficiency of crime detection.
In technical search measure, it is a kind of important technological means that electronic monitoring, secret, which take pictures, record a video,.In certain feelings
Under condition, useful information is obtained using the video monitoring system that target suspect or other third parties have set up, even will
Its video monitoring system is inputted to confuse other side with fascinating image/video, can with higher efficiency reach required scouting
Effect.Due to the secret feature of technical search measure, video system counter should have good concealment, and be preferably able to
The video monitoring system broken through is not destroyed.
Video monitoring system is generally made of five major parts, as shown in Figure 1, comprising: video acquisition system, transmission of video system
System, video handover management system, video display system and video recording system.Video acquisition system is mainly completed to front end figure
As the acquisition of signal；Video transmission system completes the transmission and communication control to front-end image signal；Video handover management system
Complete the switching control and resource allocation to picture signal；Video display system is completed defeated to the terminal device of front-end image signal
Out；Video recording system completes that the long delay of front-end image signal is stored and played back.In technical search measure scope, for
The concealed consideration of secret is suitable for carrying out in the Transmission system of video monitoring system for the counter of video monitoring system.
Difference of the Video transmission system based on transmission mode can be divided into three classes: one, being passed based on coaxial video base band
Defeated, coaxial cable is made of two coaxially arranged conductors that fall, and the signal of transmission is completely enclosed within inside outer conductor, to have
There are low high-frequency loss, shielding and the distinguishing features such as strong antijamming capability, service band be wide.Coaxial cable be generally used to transmission 0~
6MHz video baseband signal, can also using wide-band co-cable technology will up to tens of road video baseband signal modulation multiplex same
It is transmitted on root cable.In order to increase transmission range, cable compensator or cable equalizer auxiliary transmission can be used；Two, optical fiber
Transmission common are simulation optical transmitter and receiver sum number word optical transmitter and receiver, be the best of the even hundreds of kilometer TV monitoring and controlling transmission of solution tens
Settling mode, by the way that video and control signal are converted to laser signal and transmitted in a fiber；Three, network transmission: being to solve city
The monitoring transmission mode that remote, point is extremely dispersed between domain, using MPEG2/4, the audiovisual compressions format transmission prison such as H.264
Control signal.
Summary of the invention
The purpose of the present invention is to provide a kind of counter systems of video monitoring transmission, the characteristics of adaptive technique reconnaissance measure
And demand, it is broken through for the Video transmission system of particular video frequency monitoring system, while any physics is not generated to the system
On damage, implement following items function: 1. vision signals transmitted of the acquisition Video transmission system；2. interfering the view
The vision signal that frequency Transmission system is transmitted；3. the vision signal other than the acquired video of the video monitoring system, which is inputted this, is
System.
The purpose is achieved through the following technical solutions: a kind of counter system of video monitoring transmission, including faint letter
Number receiving module, video signal format detection module, video reception and memory module, vision signal interference module, video
Signal emission module, as shown in Figure 2.
According to one embodiment of present invention, small-signal receiving module uses high-precision Receiver Module, is regarding
The video signal transmission wire cable of frequency Transmission system is placed around, or is close to cable placement, under the premise of not destroying cable,
The faint vision signal being radiated outside cable is received, is used for subsequent module for processing.
According to one embodiment of present invention, video signal format detection module receives small-signal receiving module
Signal detected, to determine video signal format that Video transmission system is transmitted.Detection method is to reception signal
Spectral characteristic is analyzed, and determines the format of vision signal according to the characteristics of signal bandwidth and power spectrum, such as 6MHz bandwidth
Pal signal.
According to one embodiment of present invention, video reception and memory module are according to video signal format detection module
Detected signal format carries out demodulation and digitized processing for receiving signal, and processed digital signal streams are carried out
Storage.
According to one embodiment of present invention, vision signal interference module emits powerful interference signal, for video
The vision signal that Transmission system is transmitted is interfered, so that video display system and video recording system can not be for the videos
Monitoring system vision signal collected normally show and record a video.
According to one embodiment of present invention, vision signal transmitting module emits powerful vision signal, video letter
Number content can be set according to demand, and the intensity of the vision signal suppresses the view transmitted inside video signal transmission wire cable enough
Frequency signal, so that video display system and the shown content with video recording of video recording system are modified.
According to one embodiment of present invention, the transmission power level of vision signal interference module can connect according to small-signal
It receives signal strength indication received by module and carries out adaptive adjustment, to save transmission power, improve concealment.
According to one embodiment of present invention, the transmission power level of vision signal transmitting module can connect according to small-signal
It receives signal strength indication received by module and carries out adaptive adjustment, to save transmission power, improve concealment.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
The composition of Fig. 1 video monitoring system
The composition of Fig. 2 video monitoring transmission counter system
The video monitoring for pal mode vision signal of Fig. 3 embodiment of the present invention transmits counter system
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of above-mentioned term.
The video monitoring according to an embodiment of the present invention for pal mode vision signal is described first below in conjunction with attached drawing to pass
Defeated counter system.
With reference to Fig. 3, the counter system 200 of video monitoring transmission according to an embodiment of the present invention includes that small-signal receives mould
Block 210, pal mode video signal format detection module 220, pal mode vision signal multiplexing detection module 221, pal mode view
Frequency signal receives and memory module 230, pal mode vision signal interference module 240 and pal mode vision signal transmitting module
250, in which:
Small-signal receiving module 210 uses high-precision Receiver Module, and radio frequency reception frequency range corresponds to pal mode
The signal frequency range of vision signal is placed around in the video signal transmission wire cable of Video transmission system, or is close to cable and puts
It sets, under the premise of not destroying cable, the faint vision signal being radiated outside cable is received, for subsequent module for processing
It uses.
The signal that pal mode video signal format detection module 220 receives small-signal receiving module is examined
It surveys, carries out signal detection analysis according to features such as the frequency spectrums of pal mode signal, to determine video that Video transmission system is transmitted
Signal format whether be 6MHz bandwidth pal mode signal.
The signal of pal mode, pal mode vision signal are confirmed as by pal mode video signal format detection module 220
Multiplexing detection module 221 further detects it, confirms whether the signal contains the pal mode signal of multiplexing.
If detecting to multiplex, number and every frequency point where signal all the way to multiplexing are further detected.
Pal mode video reception and memory module 230 according to pal mode video signal format detection module 220 with
And signal format detected by pal mode vision signal multiplexing detection module 221 carries out demodulation and number for receiving signal
Change processing, and processed digital signal streams are stored.
Pal mode vision signal interference module 240 is according to pal mode video signal format detection module 220 and PAL system
Formula vision signal is multiplexed signal format detected by detection module 221, emits in pal mode signal bandwidth powerful dry
Signal is disturbed, the vision signal that Video transmission system is transmitted is interfered, so that video display system and video record system
System can not vision signal collected for the video monitoring system carry out significant display and video recording.The interference signal is directed to
The frequency spectrum characteristic of pal mode vision signal has carried out special pretreatment work, to reduce the power of interference signal, increases hidden
Property.
Pal mode vision signal transmitting module 250 is according to pal mode video signal format detection module 220 and PAL system
Formula vision signal is multiplexed signal format detected by detection module 221, emits powerful vision signal, in vision signal
Appearance can arbitrarily be set according to demand, and the intensity of the vision signal suppresses the view transmitted inside video signal transmission wire cable enough
Frequency signal, so that video display system and the shown content with video recording of video recording system are modified.
Claims (9)
1. a kind of counter system of video monitoring transmission characterized by comprising small-signal receiving module, vision signal lattice
Formula detection module, video reception and memory module, vision signal interference module, vision signal transmitting module.
2. the counter system of video monitoring transmission as described in claim 1, which is characterized in that the small-signal receiving module
It using high-precision Receiver Module, is placed around, or is close in the video signal transmission wire cable of Video transmission system
Cable is placed, and under the premise of not destroying cable, the faint vision signal being radiated outside cable is received, and is believed for video
Number format detection module uses.
3. such as the counter system of the described in any item video monitoring transmission of claim 1~2, which is characterized in that the video letter
The signal that number format detection module receives the small-signal receiving module detects, to determine Video transmission system
The video signal format transmitted.
4. the counter system of video monitoring transmission as claimed in any one of claims 1 to 3, which is characterized in that the video letter
Number receive and memory module according to signal format detected by the video signal format detection module for receive signal into
Row demodulation and digitized processing, and processed digital signal streams are stored.
5. such as the counter system of the described in any item video monitoring transmission of Claims 1 to 4, which is characterized in that the video letter
Number interference module emits powerful interference signal, and the vision signal that Video transmission system is transmitted is interfered, so that
Video display system and video recording system can not vision signal collected for the video monitoring system normally shown
Show and records a video.
6. the counter system of video monitoring transmission as claimed in any one of claims 1 to 5, which is characterized in that the video letter
Number transmitting module emits powerful vision signal, and video signal content can be set according to demand, the vision signal
Intensity suppress the vision signal transmitted inside video signal transmission wire cable enough so that video display system and video
The shown content with video recording of video recording system is modified.
7. the counter system of video monitoring transmission as claimed in claim 3, the detection of the video signal format detection module
Method is analyzed the spectral characteristic for receiving signal, and the lattice of vision signal are determined according to the characteristics of signal bandwidth and power spectrum
Formula.
8. the counter system of video monitoring transmission as described in any one of claims 1 to 6, which is characterized in that the video letter
The transmission power level of number interference module can the signal strength indication according to received by the small-signal receiving module carry out from
The adjustment of adaptation improves concealment to save transmission power.
9. the counter system of video monitoring transmission as described in any one of claims 1 to 6, which is characterized in that the video letter
The transmission power level of number transmitting module can the signal strength indication according to received by the small-signal receiving module carry out from
The adjustment of adaptation improves concealment to save transmission power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710777983.3A CN109429036A (en) | 2017-09-01 | 2017-09-01 | A kind of counter system of video monitoring transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710777983.3A CN109429036A (en) | 2017-09-01 | 2017-09-01 | A kind of counter system of video monitoring transmission |
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| Publication Number | Publication Date |
|---|---|
| CN109429036A true CN109429036A (en) | 2019-03-05 |
Family
ID=65505612
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| CN201710777983.3A Pending CN109429036A (en) | 2017-09-01 | 2017-09-01 | A kind of counter system of video monitoring transmission |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383943A (en) * | 2008-10-15 | 2009-03-11 | 天津大学 | Digital audio and video information hidden filtering method |
| CN101944351A (en) * | 2009-07-08 | 2011-01-12 | 宏碁股份有限公司 | Active display period determination device and method, resolution determination system and method |
| CN102238384A (en) * | 2011-04-08 | 2011-11-09 | 金诗科技有限公司 | Multi-channel video decoder |
| CN202121588U (en) * | 2011-01-11 | 2012-01-18 | 北京理工大学 | Radio anti-cheating system for examinations |
| US20120054790A1 (en) * | 2010-08-31 | 2012-03-01 | Kim Bongkun | Image display apparatus and image displaying method thereof |
| CN102859565A (en) * | 2010-04-26 | 2013-01-02 | 传感电子有限责任公司 | Method and system for security system tampering detection |
| CN204928888U (en) * | 2015-04-10 | 2015-12-30 | 长春理工大学 | Communication signal standard identification system |
| CN205679761U (en) * | 2016-05-27 | 2016-11-09 | 南京博驰光电科技有限公司 | A kind of unmanned plane integrated campaign system |
| CN106209296A (en) * | 2016-06-29 | 2016-12-07 | 中北大学 | A kind of band signal EVAC |
| CN106454411A (en) * | 2016-10-27 | 2017-02-22 | 北京小米移动软件有限公司 | Station caption processing method and device |
| CN106911936A (en) * | 2017-03-01 | 2017-06-30 | 北京牡丹电子集团有限责任公司数字电视技术中心 | Dynamic video flowing picture covering method |
| CN107092272A (en) * | 2017-05-06 | 2017-08-25 | 西安多杰机器人有限公司 | A kind of automated driving system of depopulated helicopter |
-
2017
- 2017-09-01 CN CN201710777983.3A patent/CN109429036A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383943A (en) * | 2008-10-15 | 2009-03-11 | 天津大学 | Digital audio and video information hidden filtering method |
| CN101944351A (en) * | 2009-07-08 | 2011-01-12 | 宏碁股份有限公司 | Active display period determination device and method, resolution determination system and method |
| CN102859565A (en) * | 2010-04-26 | 2013-01-02 | 传感电子有限责任公司 | Method and system for security system tampering detection |
| US20120054790A1 (en) * | 2010-08-31 | 2012-03-01 | Kim Bongkun | Image display apparatus and image displaying method thereof |
| CN202121588U (en) * | 2011-01-11 | 2012-01-18 | 北京理工大学 | Radio anti-cheating system for examinations |
| CN102238384A (en) * | 2011-04-08 | 2011-11-09 | 金诗科技有限公司 | Multi-channel video decoder |
| CN204928888U (en) * | 2015-04-10 | 2015-12-30 | 长春理工大学 | Communication signal standard identification system |
| CN205679761U (en) * | 2016-05-27 | 2016-11-09 | 南京博驰光电科技有限公司 | A kind of unmanned plane integrated campaign system |
| CN106209296A (en) * | 2016-06-29 | 2016-12-07 | 中北大学 | A kind of band signal EVAC |
| CN106454411A (en) * | 2016-10-27 | 2017-02-22 | 北京小米移动软件有限公司 | Station caption processing method and device |
| CN106911936A (en) * | 2017-03-01 | 2017-06-30 | 北京牡丹电子集团有限责任公司数字电视技术中心 | Dynamic video flowing picture covering method |
| CN107092272A (en) * | 2017-05-06 | 2017-08-25 | 西安多杰机器人有限公司 | A kind of automated driving system of depopulated helicopter |
Non-Patent Citations (1)
| Title |
|---|
| 夏征农: "《大辞海军事卷》", 31 January 2015 * |
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Application publication date: 20190305 |
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