CN106034223A - Security-event image signal processing method and security system thereof - Google Patents
Security-event image signal processing method and security system thereof Download PDFInfo
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Abstract
The invention relates to a security-event image signal processing method and a security system which implements the method. The system is provided with one or more security host and one or more digital image recorders connected with the security host, Each digital image recorder adjusts a coding parameter of a stored image signal dynamically according to the event type represented by a security event signal transferred by the security host while recording images continuously, and the image signal is stored according to the adjusted coding parameter. For example, the image signal is stored in a relatively low coding parameter before the digital image recorder receives the security event signal, the low coding parameter is adjusted to a relatively high coding parameter when the security event signal is received, and the image signal of relatively high image quality is stored. Thus, the recording time can be prolonged in a limited storage space.
Description
Technical field
The present invention relates to one and save event video-signal processing method and its safety system from damage, particularly relate to can dynamically adjust the video-signal processing method of coding parameter and relevant safety system according to saving event from damage.
Background technology
In prior art, often use safety system is as record turnover event, or is used for detecting whether ad-hoc location has the solution of anomalous event；Another way is then to utilize camera to monitor certain particular place, reaches antitheft and purpose that is that save from damage by imaging monitoring with video recording.
Digitized video recorder (digital video recorder in general safety system, DVR) in prior art, digitized video writer chain is connected to one or many station terminals photographic attachment, it is installed on specific occasion and turnover entrance, turnover entrance can be provided with swipes the card or control enters and exits the entrance guard device of personnel, enter and exit signal to be managed and record by the preservation host in system, Control Centre (control center) personnel are then to be monitored with the image data of digitized video recorder, judge to enter and exit whether personnel have abnormal situation by image, and can send someone at any time to process.
As a example by the monitoring device saving equipment and the recording of responsible field image from damage that above-mentioned controlling officer enters and exits, once monitoring personnel are found to have anomalous event from monitor screen, will notify that Control Centre sends in the Conventional communication mode such as phone, network and save personnel from damage to in-situ processing.In prior art, safety system and the system that the monitoring system utilizing digitized video to monitor is two independent work, if need to exchange information, reach the purpose of communication with the most traditional communication.
Relative to the equipment of past analog image record, digitized video recorder (DVR) provides the stable image storage of saving from damage with the longer time to work, it is provided that the dealer of safety system monitors in real time, and the function of successor playback.Need within full-time 24 hours, record a video under the consideration of safety especially, therefore the hardware storage space requirement of signal of video signal is the biggest, if storage area is the biggest, in addition to regularly replacing storage media (such as hard disk), more likely may require that the image data abandoned beyond a period of time, just can move out of the storage area of continuation video recording.
Summary of the invention
The present invention proposes one and saves event video-signal processing method and its safety system from damage, in addition to utilizing a kind of gateway technique to link the signal of safety system and monitoring system, more can be according to the detecting saving event in safety system from damage, and dynamically set the image coding parameter of digitized video recorder, can effectively save the use of digitized video recorder hardware storage area, reach the purpose that video time lengthens, effectively saves hardware use space etc. whereby.
According to embodiment, save event video-signal processing method key step from damage to include, when a digitized video recorder (DVR) receives when performing recording image and saves event signal from damage, foundation is saved from damage event signal and sets the coding parameter of digitized video recorder storage signal of video signal, and store signal of video signal with coding parameter after setting.
In this key step, according to an embodiment, digitized video recorder originally not yet receive save event signal from damage time, store signal of video signal with a relatively low coding parameter.It is such as the coding parameter storing the coding parameter of lower quality image, relatively low bit rate, or the coding parameter etc. of low resolution.
In one embodiment, after digitized video recorder receives and saves event signal from damage, save event signal from damage and represent certain event category, then can dynamically set the coding parameter storing signal of video signal according to event category.Wherein, describe multiple many in the storage media of digitized video recorder and save event signal and the most corresponding multiple event categories, and the coding parameter corresponding to each event category from damage.
State in the embodiment of the safety system saving event video-signal processing method from damage in realization, safety system includes one or more preservation host, the most each preservation host links at least one perceptron, and one or more digitized video recorder, each digitized video writer chain connects at least one preservation host, and the most each digitized video writer chain connects at least one image perceptron.
In other words, the present invention provides one to save event video-signal processing method from damage, including: a digitized video recorder receives in time performing recording image saves event signal from damage；And according to this save from damage event signal set this digitized video recorder store signal of video signal coding parameter, and with set after coding parameter store signal of video signal.
This digitized video recorder stores this signal of video signal with a relatively low coding parameter before receiving this and saving event signal from damage.
Receiving before this saves event signal from damage at this digitized video recorder, including a confirmation, this saves the step whether event signal is wrong report from damage.
Receive after this saves event signal from damage at this digitized video recorder, save, according to this, event category that event signal represents from damage and set and store the coding parameter of signal of video signal.
This coding parameter is bit rate, the quality of image, image resolution, number of pictures per second or compressed format.
This event category saving event signal representative from damage is recorded in storage media of this digitized video recorder, and these storage media describe multiple many and save event signal and the most corresponding multiple event categories, and the coding parameter corresponding to each event category from damage.
This digitized video recorder connects the image perceptron of at least one this signal of video signal of recording, and this is saved event signal from damage and is produced by a preservation host linking this digitized video recorder.
The shooting of each image perceptron is provided with the image in the place of a perceptron of correspondence, and this image perceptron records the identification data in corresponding identical place with this perceptron；When event is saved in this perceptron perception one from damage, and the signal being sent to this preservation host is loaded with identification data, it is provided that this digitized video recorder sets the coding parameter storing corresponding place image.
The present invention also provides for a kind of performing the above-mentioned safety system saving event video-signal processing method from damage, and described safety system includes: one or more preservation host, and the most each preservation host links at least one perceptron；One or more digitized video recorder, each digitized video writer chain connects at least one this preservation host, and the most each digitized video writer chain connects at least one image perceptron；Wherein, this digitized video recorder dynamically sets the coding parameter of storage signal of video signal according to saving event signal produced by least one this preservation host linked from damage.
Each preservation host more links a Control Centre by a gateway system.
In order to be able to be further understood that technology, method and effect that the present invention is taked by reaching set purpose, refer to the detailed description below in connection with the present invention, accompanying drawing, believe the purpose of the present invention, feature and feature, when can thus be goed deep into and concrete understanding, but appended accompanying drawing only provide with reference to and explanation use, be not used for the present invention is any limitation as.
Accompanying drawing explanation
Fig. 1 is to perform one of present invention safety system configuration diagram saving event video-signal processing method from damage；
Fig. 2 is perform the safety system configuration diagram that the present invention saves event video-signal processing method from damage two；
Fig. 3 is perform the safety system configuration diagram that the present invention saves event video-signal processing method from damage three；
Fig. 4 is one of present invention embodiment flow process saving event video-signal processing method from damage；
Fig. 5 is that the present invention saves the two of the embodiment flow process of event video-signal processing method from damage；
Fig. 6 is that the present invention saves the three of the embodiment flow process of event video-signal processing method from damage；
Fig. 7 is to implement one of present invention application schematic diagram of safety system saving event video-signal processing method from damage；
Fig. 8 is the embodiment schematic diagram of safety system of the present invention；
Fig. 9 is the gateway system embodiment schematic diagram of safety system of the present invention.
[description of reference numerals]
Preservation host 10 perceptron 101,102,103
Digitized video recorder 12 image perceptron 121,122,123
Preservation host 20 perceptron 201,202,203
Digitized video recorder 22 image perceptron 221,222,223
Gateway 24 Control Centre 26
Control Centre 30 preservation host 31,32,33,34
Digitized video recorder 35,36,37,38
Digitized video recorder 73 gateway system 75
Camera 701 passes in and out entrance 71
Entrance guard device 703 preservation host 77
Control Centre 79
Perceptron 801 camera 803
Preservation host 81 Control Centre 823
Data base 805,807 gateway systems 825
Center management system 827 digitized video recorder 89
Save terminal 808,809 from damage
Data processing unit 901 signal management unit 903
Communication unit 905 mnemon 907
First communication interface 908 second communication interface 909
Preservation host 921 Control Centre 923
Gateway system 925 center management system 927
Digitized video recorder 929 management interface 910
Step S401～S407 signal of video signal handling process
Step S501～S509 signal of video signal handling process
Step S601～S611 signal of video signal handling process
Detailed description of the invention
In saving field from damage, connect one or more as the digitized video recorder (DVR) of image monitoring and be located at image perceptron everywhere, signal of video signal everywhere is obtained by each image perceptron, concentrate afterwards and be stored in digitized video recorder, wherein store media common for hard disk (HDD), then storing the storage area of media to limit nature and become the time restriction of digitized video recorder recorded film, be likely to result in that image life span produces not saves leak from damage.
The present invention proposes one and saves event video-signal processing method and its safety system from damage, particularly relate to wherein digitized video recorder can dynamically set (as adjusted, switching, selection etc.) with reference to the classification saving event from damage and store the mode of image, such as set (adjust, switch, select) coding parameter, save the storage area used when not saving event from damage and occurring whereby, can effectively extend the recording time in limited storage space whereby.
One of present invention safety system configuration diagram saving event video-signal processing method from damage refers to Fig. 1, Fig. 1 shows that preservation host 10 connection has several perceptron 101,102 and 103 in a system, the magnetic reed switch of perceptron 101,102,103 such as gateway, vibrations perceptron, the perceptron of equipment running, invade perceptron, detect cigarette device, gas perceptron etc., be located at multiple diverse location.This example shows can be provided with image perceptron 121,122,123 near each position, it it is such as neighbouring camera, perform the full-time photography of security requirements, these image perceptrons 121,122,123 link to digitized video recorder 12 the most in a wired or wireless fashion, digitized video recorder 12 store recorded image.
Save from damage in event video-signal processing method relevant, typically no perceive any save event from damage in the case of, digitized video recorder 12 is the most persistently received from the signal of video signal that image perceptron 121,122,123 produces, but these signal of video signal can be stored so that relatively low coding parameter processes, so can save the storage area under not saving event from damage, this partial image is the most inessential.When digitized video recorder 12 from preservation host 10 obtain certain perceptron sense specific save event from damage time, the coding parameter storing corresponding place image is i.e. set according to this perceptron positional information (corresponding identifies data), such as heighten coding parameter, to store the signal of video signal of good quality.
Owing to digitized video recorder 12 can dynamically set the coding parameter of storage image according to preservation host 10 end for the event of saving from damage specifically for system, therefore under the demand of full-time recording image, can effectively extend the video time in limited storage space.
Then, Fig. 2 is another embodiment schematic diagram performing the safety system framework that the present invention saves event video-signal processing method from damage.
Safety system as shown in Figure 2 includes a preservation host 20, actually can have one or more preservation host 20, and each preservation host links at least one perceptron, and this example shows perceptron 201,202,203.System separately includes digitized video recorder 22, actually can have one or more digitized video recorder 22, and each digitized video recorder 22 links at least one image perceptron 221,222,223, and can connect to preservation host 20.Separately have in more complicated safety system, however not excluded that digitized video recorder 22 can connect to multiple preservation host 20；Otherwise, also it is not excluded for that preservation host 20 is online multiple digitized video recorder 22.
Specifically, preservation host 20 will be by an online Control Centre of gateway 24 26, and when one of perceptron 201,202,203 is triggered, preservation host 20 produces signal for this legend, can will save signal from damage by gateway 24 and be delivered to Control Centre 26.Now, according to the contained inventive embodiments of description, the coding parameter storing signal of video signal will be dynamically set with this digitized video recorder 22 saving signal correction from damage, the coding parameter when signal of video signal of the channel such as set and save signal correction from damage stores, the coding parameter storage after foundation setting saves the signal of video signal of signal correction from damage with this.Wherein when not having generation to save signal from damage, the coding parameter that signal of video signal can be relatively low stores；Otherwise, when confirmation has and saves signal from damage, and then improve coding parameter, store the signal of video signal of better quality.When saving signal ended from damage or being set to initial condition, the coding parameter of digitized video recorder 22 will adjust back to original parameter value.
Related facility refers to implement the application schematic diagram that the present invention saves the safety system of event video-signal processing method from damage shown in Fig. 7.
Having schematically shown a digitized video recorder 73 in Fig. 7, be linked to the camera 701 of shooting turnover entrance 71, digitized video recorder 73 persistently receives the signal of video signal of camera 701 shooting.Digitized video recorder 73 is connected to preservation host 77, and preservation host 77 is provided with perceptron at this near turnover entrance 71, the entrance guard device 703 of such example.
Not yet have triggering any save signal from damage time, when namely entrance guard device 703 does not have any triggering, digitized video recorder 73 stores signal of video signal with a relatively low coding parameter, such as store signal of video signal in modes such as relatively low image resolution, relatively low bit rate, less image size, storage area can be saved.
When preservation host 77 receives the signal of entrance guard device 703, represent that triggering one saves event from damage, ratio enters and exits if any personnel, or have human factor error to use entrance guard device 703, or having intrusion behavior, digitized video recorder 73 i.e. basis is saved event signal from damage and is set the coding parameter storing signal of video signal, such as stores signal of video signal with higher coding parameter, therefore the image of better quality can be obtained before not yet setting preservation host 77 and being armed state.
Preservation host 77 can connect the Control Centre 79 of rear end by a gateway system 75, and signal of video signal online is delivered to Control Centre 79 by this.
One it is mentioned that at this, for integrating the safety system of independent work originally and the monitoring system utilizing digitized video recorder to be formed, gateway system 75 in Fig. 7 is a kind of signal gateway being set up between preservation host 77 and digitized video recorder 73, can be that various kenel realizes, such as utilize the software being implemented in particular hardware device or firmware, in order to process signal transmission and conversion, contact safety system and monitoring system, both can be exchanged information at the most independent system, reach the effect monitoring in real time, circulate a notice of and saving from damage.
Through the integration of this gateway system 75, rear end Control Centre 79 can quickly and in real time obtain the signal of saving from damage of preservation host 77, and the signal of video signal of digitized video recorder 73.
Fig. 3 shows that performing the present invention saves another safety system framework of event video-signal processing method from damage, this safety system is provided with a Control Centre 30, multiple preservation host 31,32,33,34, and the digitized video recorder 35,36,37,38 that preservation host 31,32,33,34 is linked respectively can be managed simultaneously.If in the safety system of a complexity, digitized video recorder can link multiple preservation host according to design, and can save event category that event signal represents from damage according to multiple and dynamically set the coding parameter that stores signal of video signal.Otherwise, preservation host can link multiple digitized video recorders according to design, can obtain more complete supervision picture.
Such as the system architecture that Fig. 3 shows, Control Centre 30 manages multi-terminal system simultaneously, whether signal is saved from damage produced by preservation host 31,32,33,34, or signal of video signal produced by digitized video recorder 35,36,37,38, when each image perceptron camera site is provided with a perceptron of correspondence, all being loaded with the identification information saving trigger position from damage that can confirm that in signal, namely image perceptron records the identification data in corresponding identical place to relevant perceptron.
When event is saved in perceptron perception one from damage, the signal of the preservation host being sent to connection is loaded with identification data, make the digitized video recorder being correlated with can set coding parameter according to corresponding passage (corresponding particular place), and also can be when obtaining the signal of a preservation host therein after Control Centre 30, according to contained identifying in signal, validation of information triggers the position saved from damage.
Utilizing the framework of above-mentioned each safety system, can perform the present invention and save event video-signal processing method from damage, related embodiment flow process refers to Fig. 4.
During System Operation, ordinary circumstance such as step S401, the digitized video recorder in safety system continues recording image, now, such as step S403, do not occur any save event from damage in the case of, signal of video signal can be stored by a relatively low coding parameter, storage area can be saved whereby.
System judges whether to save event signal from damage at any time？For step S405, do not trigger any when saving event from damage, it may be assumed that no, continue step S401 to step S405；If judging to have when saving event from damage, it may be assumed that be, performing step S407, digitized video recorder will store with higher coding parameter and transmit signal of video signal.
In safety system, digitized video recorder links with preservation host signal, and when digitized video recorder performs recording image, event signal is saved in reception of the most all awaiting orders from damage.Produce when there being event, by according to the coding parameter saving event signal setting digitized video recorder storage signal of video signal from damage, such as adjust higher bit rate (bit rate), the preferable quality of image (such as: saturated, colourity, contrast), bigger image size (CIF, Common Intermediate Format), higher image resolution, higher number of pictures per second (fps, Frame Per Second) maybe can safeguard the compressed format of better quality.Afterwards, signal of video signal is stored further according to coding parameter after setting.
In one embodiment, when preservation host by perceptron learn one save event from damage time, before digitized video recorder receives and saves event signal from damage, it may include one confirms to save the step whether event signal is wrong report from damage, and flow process is as shown in Figure 5.
Starting such as step S501, when perceptron is triggered, preservation host is judged as that one specific saves event from damage, generation is now saved event signal to digitized video recorder from damage.But now, first such as step S503, auxiliary is confirmed that this saves event from damage by system, and determines whether wrong report？For step S505.Such as: by neighbouring perceptron comprehensive descision, perceptron, whether same event can be triggered continuously within the setting time, confirms that perceptron is online further, or can artificially judgement etc., further confirm that afterwards and save event category from damage, such as: be whether that an intrusion event, destructive insident, unit exception event, toxic gas leak event, event of fire etc..
When being judged as wrong report, it may be assumed that be, continuing step S507, preservation host continues to await orders；If not wrong report, that is: no, such as step S509, transmission is saved from damage event signal to digitized video recorder by preservation host, digitized video recorder set the various coding parameters saving event category from damage of (adjust, switch or selects) correspondence according to set strategy (criteria).
Embodiment includes, if a safety system has multiple perceptron and multiple image perceptron, preservation host is when knowing that event is saved in triggering one from damage, trigger position will be judged according to signal, and this position is passed to digitized video recorder in company with saving event signal from damage, the coding parameter of the signal of video signal stored in respective channels is set according to trigger position, without to set coding parameter for the signal of video signal on all channels by digitized video recorder.
Separately there is embodiment, as shown in Figure 6, when digitized video recorder sets coding parameter, also can set coding parameter in various degree according to the event category saving event from damage, namely event category represents to set and saves event from damage as multiple grade, and can distinguish to non-emergent event from emergency has the coding parameter of multiple grade；Or set different event safe classes, the most corresponding different grades of coding parameter according to different places.
For example, the shooting of each image perceptron is provided with the image in the place of a perceptron of correspondence, and each place may be set to different safety class for safety system, for the present invention, can be provided with different grades of coding parameter.Each image perceptron can record the identification data in corresponding identical place with perceptron, when event is saved in perceptron perception one from damage, the signal being sent to preservation host is i.e. loaded with identification data, is provided that digitized video recorder sets the coding parameter storing corresponding place image.
Related embodiment flow process is as shown in Figure 6.
Start such as step S601, digitized video recorder recording image, and in the ordinary course of things, such as step S603, store image with low coding parameter.Such as step S605, learnt to detect by preservation host when digitized video recorder and save event from damage, now will determine that event category, such as step S607.
Wherein, digitized video recorder is received by preservation host saves event signal from damage, save event signal from damage for every kind and represent an event category, wherein relation can be tabled look-up (lookup table) or database form is documented in storage media of digitized video recorder, these storage media describe multiple many and save event signal and the most corresponding multiple event categories, and the coding parameter corresponding to each event category from damage.Then, such as step S609, digitized video recorder (wherein software or firmware means) will set each image Channel coding parameters according to event category, and setting means includes can dynamically adjusting coding parameter according to event category；Or switch in the coding parameter that height is different；Or select wherein corresponding coding parameter by lookup table mode.Afterwards, the signal of video signal that will store with the coding parameter after setting, a Control Centre can be sent to through preservation host again.
Then, being illustrated in figure 8 the embodiment schematic diagram of safety system of the present invention, this example shows framework embodiment system preservation host 81, in system one end, is linked to the multiple perceptron 801 being located at terminal, and its other end is managed by Control Centre 823；Digitized video recorder 89 chain is connected to multiple camera 803, and one end, by center management system 827, forms the system of a monitoring.
Event signal is saved from damage in order to what digitized video recorder 89 to be made can obtain preservation host 81, the gateway system 825 of a signal transmission it is provided with between the Control Centre 823 of link preservation host 81 and the center management system 827 of link digitized video recorder 89, by gateway system 825 by two sub-systematic connections so that digitized video recorder 89 can according to preservation host 81 transmitted save event signal from damage and set store signal of video signal coding parameter.
In this framework, Control Centre 823 connecting one or more preservation host 81 and constitute the fundamental system saved from damage, each preservation host 81 connects one or more perceptron 801.Control Centre 823 includes the data base 805 of the data information that record is captured by each terminal perceptron 801 with access.Separately can have and save terminal 808 from damage and supervise data by monitor, or the signal of video signal transmitted by gateway system 825.
In framework, the monitoring system being made up of center management system 827 and one or more digitized video recorder 89 is in order to record static state or dynamic image, and image is shot by each camera of terminal 803.Signal of video signal will be changed and record by digitized video recorder 89, the terminal 809 of saving from damage of center management system 827 supervised by monitor screen.
Center management system 827 has the data base 807 storing image data equally, wherein image processing means can use equally the present invention can according to save from damage event signal set coding parameter technology, save terminal 809 from damage can have access at any time check, or be transferred to Control Centre 823 by gateway system 825, the personnel of safety system consult.
Fig. 9 further describes the embodiment of the gateway system being linked between preservation host and Control Centre, or Control Centre and center management system.
Wherein display is connected to the Control Centre 923 of two autonomous systems and the gateway system 925 of center management system 827, gateway system 925 can realize with the means of software or hardware circuit, gateway system 925 connects the two system by different communication interfaces, including utilizing the first communication interface 908 to be connected to Control Centre 923 and each preservation host 921, saved signal with transferring by what each preservation host produced so as to receiving.
Gateway system 925 connects center management system 927 and each digitized video recorder 929 by the second communication interface 909, so as to receiving and transferring the monitoring signal produced by each digitized video recorder 929.
The main enforcement functional module of gateway system 925 has data processing unit 901, signal management unit 903, communication unit 905 and mnemon 907, further including communication unit 905 and connect the first communication interface 908 and the second communication interface 909 of external system, management interface 910 then provides the interface of remotely management.
Control Centre 923 and center management system 927 are through this gateway system 925, digitized video recorder 929 can be obtained smoothly produced by preservation host 921 and save event signal from damage, wherein data processing unit 901 in order to processing and exchanging in the data signal of Control Centre 923 with center management system 927.
Then, digitized video recorder 929 can set the coding parameter storing image according to the grade of a certain event category saved from damage represented by event signal.
Therefore, according to saving event video-signal processing method from damage disclosed in description of the invention, method is mainly applied in digitized video recorder (DVR), in order to effectively save the storage area of signal of video signal, relevant monitoring system will link preservation host, make digitized video recorder can according to whether trigger save event from damage and determine store strategy, when confirmation has and saves event from damage, just store signal of video signal with preferably quality of image processing method, therefore can be under not affecting the demand saving purpose from damage, effectively save do not trigger any save event from damage time image use space, therefore the effect reached at least saves storage area, video time is extended under limited storage area, and still provide monitoring client receive specific save from damage event occur after obtain the most clear, high-resolution, smooth picture.
But the foregoing is only the preferable possible embodiments of the present invention; non-the most i.e. limit to protection scope of the present invention; the equivalent structure change that the most every utilization description of the invention and accompanying drawing content are done, within being the most in like manner included in protection scope of the present invention, illustrates hereby.
Claims (10)
1. save event video-signal processing method from damage for one kind, it is characterised in that described method bag
Include:
One digitized video recorder receives in time performing recording image saves event signal from damage；And
Save event signal from damage according to this and set the coding of this digitized video recorder storage signal of video signal
Parameter, and store signal of video signal with coding parameter after setting.
Save event video-signal processing method the most as claimed in claim 1 from damage, it is characterised in that
This digitized video recorder stores with a relatively low coding parameter before receiving this and saving event signal from damage should
Signal of video signal.
Save event video-signal processing method the most as claimed in claim 2 from damage, it is characterised in that
Receiving before this saves event signal from damage at this digitized video recorder, including a confirmation, this saves thing from damage
Whether part signal is the step reported by mistake.
Save event video-signal processing method the most as claimed in claim 2 or claim 3 from damage, its feature
It is, receives after this saves event signal from damage at this digitized video recorder, save thing from damage according to this
The event category that part signal represents sets the coding parameter storing signal of video signal.
Save event video-signal processing method the most as claimed in claim 4 from damage, it is characterised in that
This coding parameter is bit rate, the quality of image, image resolution, number of pictures per second or compressed format.
Save event video-signal processing method the most as claimed in claim 4 from damage, it is characterised in that
This event category saving event signal representative from damage is recorded in a storage matchmaker of this digitized video recorder
Internal, these storage media describe multiple many, and to save event signal from damage multiple with the most corresponding
Event category, and the coding parameter corresponding to each event category.
Save event video-signal processing method the most as claimed in claim 1 from damage, it is characterised in that
This digitized video recorder connects the image perceptron of at least one this signal of video signal of recording, and this is saved from damage
Event signal is produced by a preservation host linking this digitized video recorder.
Save event video-signal processing method the most as claimed in claim 7 from damage, it is characterised in that
The shooting of each image perceptron is provided with the image in the place of a perceptron of correspondence, this image perception
Device records the identification data in corresponding identical place with this perceptron；When this perceptron perception one is protected
Total event, the signal being sent to this preservation host is loaded with identification data, it is provided that this digitized video is remembered
Record device sets the coding parameter storing corresponding place image.
9. one kind performs saving from damage at event signal of video signal as described in any one of claim 1 to 8
The safety system of reason method, it is characterised in that described safety system includes:
One or more preservation host, the most each preservation host links at least one perceptron；
One or more digitized video recorder, each digitized video writer chain meets at least one this guarantor
Full main frame, the most each digitized video writer chain connects at least one image perceptron；
Wherein, this digitized video recorder is produced according at least one this preservation host linked
Raw event signal of saving from damage dynamically sets the coding parameter storing signal of video signal.
10. safety system as claimed in claim 9, it is characterised in that each preservation host is more
A Control Centre is linked by a gateway system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108737781A (en) * | 2018-04-27 | 2018-11-02 | 浙江大华技术股份有限公司 | A kind of method and apparatus of picture detection |
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