CN103595970B - Video monitoring device and method for rapidly switching analog video and IP video - Google Patents
Video monitoring device and method for rapidly switching analog video and IP video Download PDFInfo
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- CN103595970B CN103595970B CN201310596563.7A CN201310596563A CN103595970B CN 103595970 B CN103595970 B CN 103595970B CN 201310596563 A CN201310596563 A CN 201310596563A CN 103595970 B CN103595970 B CN 103595970B
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Abstract
The invention discloses a video monitoring device and method for rapidly switching an analog video and an IP video. The video monitoring device comprises at least one connector, a video signal converter, an IP video storage module and a control module. A video signal conversion module converts a differential signal which is introduced by the connector and converted from an analog video image signal to the analog video image signal again. The IP video storage module stores an introduced IP video image signal. The control module selects the analog video image signal or the IP video image signal according to the service state and outputs the selected signal to a displayer. The invention further discloses the video monitoring method for rapidly switching the analog video and the IP video based on the video monitoring device. By the adoption of the video monitoring device and method for rapidly switching the analog video and the IP video, the analog video and the IP video can be rapidly switched and rapid snapshot and tracking can be conducted.
Description
Technical field
The invention belongs to technical field of video monitoring, in video monitoring system, more particularly, to realize analog video and IP regards
Frequency simultaneous transmission, and the video monitoring apparatus that can be switched fast and method.
Background technology
Video monitoring is the important component part of safety and protection system, and video monitoring is with its directly perceived, accurate, timely and information
Abundant in content and be widely used in many occasions.In recent years, with computer, network and image procossing, transmission technology fly
Speed development, Video Supervision Technique there has also been significant progress.Because the arrival of networking, the universalness trend of video monitoring is more next
More obvious.
Video monitoring has obtained very many applications in field of traffic control, at present each crossroad and other transportation cards
It is assembled with video camera at mouthful, in real time traffic is comprehensively controlled.With the development of technology, current traffic administration prison
Not only only have analog video camera in control system, also have IP video camera, or analog video camera passes through encoder by video signal
Digitized transmits on ip networks.Due to employing video data digital and being transmitted by IP network, efficiently solve
The signal impairment that transmission range is brought, can transmit remote distance.But due to video data need encoded, transmission and
The a series of processes such as decoding, lead to video monitoring system in terms of image real-time, slower than simulated monitoring system.To prison
It is sometimes difficult to reach the requirement of figure line time delay under the higher application scenarios of control image requirement of real-time, especially capture in traffic block port
During break in traffic rules and regulations, because the movement velocity of vehicle is fast, when controlling head to go to tracking, picture coding time delay leads to not traffic police
Quick tracking vehicle is it is more difficult to reach the quick demand captured of traffic police.
In prior art, tracking operation can quickly be captured by simulation monitoring mode, but coaxial cable transmission
The decay of analogue signal larger it is impossible to carry out long range propagation, and adopt optical transmitter and receiver and optical fiber solutions transmission, then cost is very big.
Both modes all cannot be merged with IP monitor mode well simultaneously.
Content of the invention
The purpose of the present invention is for the problems referred to above, proposes a kind of analog video and IP video simultaneous transmission and is switched fast
Supervising device and method, solve the problems, such as analog video monitoring and IP video monitoring fusion, be capable of quick as needed
Switching, is quickly captured.
In order to realize foregoing invention purpose, technical solution of the present invention is as follows：
The video monitoring apparatus that a kind of analog video and IP video are switched fast, are applied to including headend equipment and display
Video monitoring system, described device includes：
At least one adapter, for headend equipment simultaneously send IP video signal and according to analog video image
The differential signal that signal is converted into；
Video-frequency signal converter, for being again converted to analog video image signals by the differential signal of access；
IP video storage modules, for being stored the IP video signal of access；
Control module, for selecting analog video image signals or IP video signal to export and show according to service condition
Show device.
Further, described device also includes difference forwarding module, for amplifying and forwarding the differential signal accessing；Described
Control module is additionally operable to send to low-level device has access to instruction, or/and receives the instruction of having access to of superior device, and according to reception
Have access to instruction, control described difference forwarding module to forward the differential signal accessing, or/and control described IP video storage modules to turn
Send out the IP video signal accessing.Achieve the cascade of apparatus of the present invention by difference forwarding module and control module, expand
The scale of video monitoring system, higher level equipment can have access to the video signal of subordinate equipment.
Further, described service condition includes live viewing business and captures tracking business, when service condition is fact
During viewing business, described control module selects IP video signal to export display, when service condition is to capture to follow the tracks of industry
During business, described control module selects analog video image signals to export display；Described control module be additionally operable to by capture with
The IP video image that the candid photograph image that track business is captured is stored with described IP memory module is set up and is associated.By will capture image with
The IP video of storage is associated, when being convenient for capturing image querying and preview, can be with the IP video figure of auto-associating storage
Picture, for reference.
The invention allows for the video frequency monitoring method that a kind of analog video and IP video are switched fast, be applied to including before
End equipment and the video monitoring system of display, methods described includes step：
The IP video signal that receiving front-end equipment sends and the difference being converted into according to analog video image signals are believed
Number；
The differential signal of access is converted to analog video image signals again；
The IP video signal of access is stored；
Analog video image signals or IP video signal is selected to export display according to service condition.
Further, for multilevel mode, methods described also includes step：Send or/and receive and have access to instruction, according to connecing
The instruction of having access to received is amplified and is forwarded the differential signal accessing, or/and forwards IP video signal.
Further, described service condition includes live viewing business and captures tracking business, when service condition is fact
During viewing business, select IP video signal to export display, when service condition is to capture tracking business, select simulation
Video signal exports display, and sets up capturing tracking business the candid photograph image captured and the IP video image storing
Association.
Video monitoring apparatus and method that a kind of analog video proposed by the present invention and IP video are switched fast, headend equipment
Analog video image signals are converted to differential signal, transmit on the twisted-pair together with IP video signal, apparatus of the present invention
Receive differential signal and IP video signal, differential signal be converted to analog video image signals, by control module according to
Service condition selects analog video image signals or the output of IP video signal, it is possible to achieve analog video and IP video
It is switched fast it is adaptable under IP world, carry out low delay business as captured and following the tracks of.
Brief description
Fig. 1 is the networking structure schematic diagram of the embodiment of the present invention one；
Fig. 2 is the embodiment of the present invention two switching device structural representation；
Fig. 3 is the networking structure schematic diagram of the embodiment of the present invention three multilevel mode；
Fig. 4 is the video frequency monitoring method flow chart that analog video of the present invention and IP video are switched fast.
Specific embodiment
With reference to the accompanying drawings and examples technical solution of the present invention is described in further details, following examples are not constituted
Limitation of the invention.
In whole security protection/video monitoring system, the transmission of video image is highly important link.It is used for transmitting video
The medium of picture signal mainly has coaxial cable, optical fiber and twisted-pair feeder.Due to the characteristic of coaxial cable itself, when video image letter
The decay that when transmitting number in coaxial cable, it is subject to is relevant with the frequency of transmission range and signal itself.Video signal exists
In coaxial cable, during transmission, not only signal overall magnitude is attenuated, and each frequency component attenuation differs greatly, particularly
Color portion decay is maximum, and therefore coaxial cable is suitable only for the video of 200 meters about of transmission range.Optical fiber is remote in order to solve
The video signal of distance transmits and uses, and because optical fiber overall transfer system price is too high, optical fiber laying, connection need
Special Equipment, and installation and debugging are difficult, and fault difficulty is looked for, and damages the defect such as not easy-maintaining, closely regards within 2000 meters
Keep pouring in defeated for, optical fiber is not one and selects well.Twisted-pair feeder is the best-of-breed technology side solving this application problem at present
Case, has obtained a large amount of uses in present monitoring system.Five classes or no class line above unshielded twisted pair conduct are used at present
Transmission medium, the base band video picture signal of the real-time Transmission standard such as monochromatic or colored PAL, NTSC, SECAM, superpower interference
Suppression, ultralow electromagnetic radiation ability can make four pairs of lines in unshielded twisted pair appoint to take a pair of line just can regard with transmission of one line
Frequency picture signal, the four pairs of lines can transmit four road videos, two twisted-pair feeders (totally eight pairs of twisted-pair feeders) transmit eight road videos and mutually
Do not disturb it is already possible to transmission range is more than 1500 meters.
The present embodiment utilizes the ability of Double-strand transmission video signal, carrys out simultaneous transmission analog video using twisted-pair feeder
Picture signal and IP video signal（Digital video image data）.Ethernet twisted pair only uses four pairs of twisted-pair feeders at present
In two couples, typically only use one of 1,2,3,6 line sequence or the combination of two kinds of 4,5,7,8 line sequence, the present embodiment is with remaining two
A pair of centering transmitting analog video data, such as 7,8 line sequence or 1,2 line sequence, reach analog video image signals and numeral regard
The effect of frequency picture signal simultaneous transmission.
As shown in figure 1, the networking structure schematic diagram of the embodiment of the present invention one, regard including headend equipment, analog video and IP
The video monitoring apparatus that frequency is switched fast（Hereinafter referred to as switching device）, display.
Wherein, headend equipment includes IP video camera, video-frequency signal converter and adapter, and in the present embodiment, adapter adopts
The IP video signal of RJ45 interface, such as IP video camera output to be transmitted using line sequence 1,2,3,6, the output of IP video camera
Analog video image signals are converted to after differential signal through video-frequency signal converter, to be passed using the 7 of RJ45 interface, 8 line sequence
Defeated.
The IP video signal of IP video camera is with IP mode ethernet line（Category-5 cable）It is transmitted, and IP video camera
Analog video image data, carry out after signal conversion through twisted-pair cable video transmission technology, by conversion after differential signal, profit
It is transmitted with a pair of idle twisted-pair feeder.The analog video image signals of shooting can be converted to digital IP and regard by IP video camera
Frequency picture signal, provides analog video image signals and IP video signal it is also possible to according to the needs of user, select simultaneously
One road signal is being used.
The analog video image signals of headend equipment output and IP video signal arrive far-end by Double-strand transmission
Switching device, the switching device of the present embodiment includes adapter, video-frequency signal converter, IP video storage modules and controls mould
Block, wherein adapter are equally RJ45 interfaces.The signal that Double-strand transmission comes is divided into two-way to export by adapter RJ45 interface,
It is IP video signal and differential signal respectively, wherein IP video signal accesses IP video storage modules, and simulate and regard
The differential signal incoming video signal transducer that frequency picture signal is converted into, differential signal is converted to mould by video-frequency signal converter
Intend video signal.And one end of control module connects the display of video monitoring, the other end connects video signal conversion
Device and IP video storage modules, according to the needs of business, select analog video image signals or the output of IP video signal
To display.
The control module of the present embodiment can carry out output switching, under normal circumstances, service condition according to service condition
For live viewing business, business is watched in real time using IP video signal, during system initialization, setting control module is put
In IP video signal output state, now export the high definition decoding video based on IP video signal over the display,
IP video signal is stored by IP video storage modules according to IP mode simultaneously；Follow the tracks of when service condition is switched to candid photograph
During business, control module is switched to analog video image signals output state, and display exports analog video image signals.
When analog video image signals export, tracking business is captured in execution, and IP video storage modules are by IP video simultaneously
Image signal data is stored according to IP mode it is ensured that the continuous of video record does not interrupt.The candid photograph shooting when being captured
The IP video image of image and the storage of IP memory module is all saved in storage medium, to there being respective storage location, controls
The storage location capturing image is associated by module with the storage location of IP video image.The IP video image time period of association
Can arrange, be defaulted as candid photograph action first 3 seconds to candid photograph action 5 seconds.
Pass through table 1 and set up the association capturing image and IP video image in data base：
Table 1
Data base is when being associated managing it is only necessary to specifically be captured storage location and the IP video image of image
Storage original position, storage end position associate and manage.By the association of table 1, carry out capturing image querying and
During preview, select certain to capture image, then can be according to incidence relation above, can be with the IP video figure of auto-associating storage
Picture, for reference.
The networking structure schematic diagram of the embodiment of the present invention two is as shown in Fig. 2 be the reality under multichannel headend equipment input condition
Apply example.Switching device includes at least one adapter, and the video signal of multichannel headend equipment is linked into the company of switching device
After connecing device, differential signal is linked into video-frequency signal converter and is converted to analog video image signals by adapter, by IP video figure
As signal accesses IP video storage modules.
In embodiment two, control module can not only select different outputs according to service condition, can also select tool
The video signal of which headend equipment of body, is shown.
Easy to understand, multichannel IP video signal can be linked into IP video storage mould using hub or IP switch
Block, below repeats no more.
The networking structure schematic diagram of the embodiment of the present invention three is regarded as shown in figure 3, can be expanded by the cascade of switching device
The scale of frequency monitoring, switching device 1, as subordinate's switching device, shares simulation to the switching device 2 as higher switching device
Video signal and IP video signal.
The switching device of the present embodiment also includes difference forwarding module, for amplifying and forwarding the differential signal accessing, cuts
The control module of changing device 2 has access to instruction by transmission, and the control module of switching device 1 receives has access to instruction, controls difference to turn
Send out the differential signal that module forwards access, control IP video storage modules to forward the IP video signal accessing.
The control module of switching device 2 has access to instruction by transmission, can directly have access to the IP video image of switching device 1
Signal is it is also possible to have access to the analog video image signals of switching device 1.When switching device 2 needs to carry out having access to switching device 1
Require it is only necessary to send switching to switching device 1 during analog video image signals, the control module of switching device 1 controls difference
Forwarding module, by the analog video image signals output of the IP video camera needing to have access to, is transferred to switching device 2.Work as switching device
2 need to carry out requiring it is only necessary to send switching to switching device 1 during the IP video signal having access to switching device 1, switching dress
The control module putting 1 controls IP video storage modules to forward corresponding IP video signal.
Before IP video signal exports display, it usually needs be decoded by decoder, decoder can set
Put between the switching device and control module of the present embodiment it is also possible to be arranged in display or display is cut with the present embodiment
Which kind of between changing device, the invention is not restricted to using mode.
The present embodiment can realize cascade and the extension of more switching devices, and such as multiple subordinates switching device is to a higher level
Switching device, or the connection of multi-stage switching device, below repeat no more.
It should be noted that the video monitoring apparatus that the analog video of the present invention and IP video are switched fast can be integrated in
Digital hard disc video recorder（DVR）Or network hard disk video recorder（NVR）On.For the access of the headend equipment of multichannel, only need to pass through
Switch accesses and forwards IP video signal, and the present embodiment repeats no more for the method for conventional IP interconnection.
The present invention is based on above-mentioned switching device, realizes the video frequency monitoring method flow process that analog video and IP video are switched fast
Figure is as shown in figure 4, include step：
The IP video signal that receiving front-end equipment sends and the difference being converted into according to analog video image signals are believed
Number；
The differential signal of access is converted to analog video image signals again；
The IP video signal of access is stored；
Analog video image signals or IP video signal is selected to carry out output and arrive display according to service condition.
Single-stage application scenarios as shown in Figure 1 are suitable for the video monitoring situation of small-sized garden or small-sized Traffic Warden Subteam, for
Larger range of use scene, it usually needs using the pattern of multiple management, multiple management is as shown in Figure 3.For multiple management
Pattern, the method for the present embodiment also includes step：
Send or/and receive and have access to instruction；
Have access to, according to receive, the differential signal that instruction is amplified and forwarded access, or/and forward IP video signal.
Further, when service condition is to capture tracking business, also include step：
When carrying out capturing tracking business, build capturing tracking business the candid photograph image captured and the IP video image storing
Vertical association.By being associated capturing the IP video that image is with storage, when being convenient for capturing image querying and preview, permissible
The IP video image of auto-associating storage, for reference.
By multiple management pattern, expand the scale of video monitoring, can be with large scale deployment in large-scale community or reality
The video monitoring of existing city scope.
Above example only in order to technical scheme to be described rather than be limited, without departing substantially from the present invention essence
In the case of god and its essence, those of ordinary skill in the art work as and can make various corresponding changes and change according to the present invention
Shape, but these corresponding changes and deformation all should belong to the protection domain of appended claims of the invention.
Claims (7)
1. the video monitoring apparatus that a kind of analog video and IP video are switched fast, are applied to including headend equipment and display
Video monitoring system is it is characterised in that described device includes：
At least one adapter, passes through, for being concurrently accessed same headend equipment, the IP video figure that the different line sequence of twisted-pair feeder send
The differential signal be converted into as signal and according to analog video image signals；
Video-frequency signal converter, for being again converted to analog video image signals by the differential signal of access；
IP video storage modules, for being stored the IP video signal of access；
Control module, for selecting analog video image signals or IP video signal to export display according to service condition
Device, described service condition includes live viewing business and captures tracking business, when service condition is live viewing business, described
Control module selects IP video signal to export display, when service condition is to capture tracking business, described control mould
Block selects analog video image signals to export display.
2. device according to claim 1 is it is characterised in that described device also includes difference forwarding module, for amplifying
With the differential signal forwarding access.
3. device according to claim 2 is it is characterised in that described control module is additionally operable to have access to low-level device transmission
Instruction, or/and receive the instruction of having access to of superior device, and according to the instruction of having access to receiving, control described difference forwarding module to turn
Send out the differential signal accessing, or/and control described IP video storage modules to forward the IP video signal accessing.
4. device according to claim 1 is it is characterised in that described control module is additionally operable to capture capturing tracking business
Capture image store with described IP memory module IP video image foundation associate.
5. the video frequency monitoring method that a kind of analog video and IP video are switched fast, is applied to including headend equipment and display
Video monitoring system is it is characterised in that methods described includes step：
Receive same headend equipment and pass through the IP video signal of different line sequence transmissions of twisted-pair feeder and according to analog video figure
The differential signal being converted into as signal；
The differential signal of access is converted to analog video image signals again；
The IP video signal of access is stored；
Analog video image signals or IP video signal is selected to export display according to service condition, described service condition
Including live viewing business and candid photograph tracking business, when service condition is live viewing business, select IP video signal
Export display, when service condition is to capture tracking business, select analog video image signals to export display.
6. method according to claim 5 is it is characterised in that methods described also includes step：
Send or/and receive and have access to instruction；
Have access to, according to receive, the differential signal that instruction is amplified and forwarded access, or/and forward IP video signal.
7. method according to claim 5 is it is characterised in that methods described also includes step：Grab capturing tracking business
The image of capturing clapped is associated with the IP video image foundation of storage.
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| CN201310596563.7A CN103595970B (en) | 2013-11-21 | 2013-11-21 | Video monitoring device and method for rapidly switching analog video and IP video |
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| CN201310596563.7A CN103595970B (en) | 2013-11-21 | 2013-11-21 | Video monitoring device and method for rapidly switching analog video and IP video |
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| CN103595970B true CN103595970B (en) | 2017-02-22 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151656A (en) * | 1995-09-29 | 1997-06-11 | 三星电子株式会社 | Receiver having analog and digital video modes and receiving method thereof |
| CN1670676A (en) * | 2004-03-19 | 2005-09-21 | 联想(北京)有限公司 | Bus type keyboard, display and mouse switching control apparatus and method |
| CN103051885A (en) * | 2013-01-18 | 2013-04-17 | 深圳英飞拓科技股份有限公司 | Analog-to-digital hybrid video comprehensive monitoring system and method |
| CN203167132U (en) * | 2013-01-31 | 2013-08-28 | 深圳市泛海三江电子有限公司 | Video monitor system |
-
2013
- 2013-11-21 CN CN201310596563.7A patent/CN103595970B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151656A (en) * | 1995-09-29 | 1997-06-11 | 三星电子株式会社 | Receiver having analog and digital video modes and receiving method thereof |
| CN1670676A (en) * | 2004-03-19 | 2005-09-21 | 联想(北京)有限公司 | Bus type keyboard, display and mouse switching control apparatus and method |
| CN103051885A (en) * | 2013-01-18 | 2013-04-17 | 深圳英飞拓科技股份有限公司 | Analog-to-digital hybrid video comprehensive monitoring system and method |
| CN203167132U (en) * | 2013-01-31 | 2013-08-28 | 深圳市泛海三江电子有限公司 | Video monitor system |
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