CN104683738B - A method of storing vehicle-mounted DVR alarm video clip - Google Patents
A method of storing vehicle-mounted DVR alarm video clip Download PDFInfo
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- CN104683738B CN104683738B CN201310619038.2A CN201310619038A CN104683738B CN 104683738 B CN104683738 B CN 104683738B CN 201310619038 A CN201310619038 A CN 201310619038A CN 104683738 B CN104683738 B CN 104683738B
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Abstract
The invention discloses a kind of methods for storing vehicle-mounted DVR alarm video clip: the video recording started at the first delay moment before the moment is occurred for alarm is changed to alarm video recording by commonly recording a video, the video recording started at the second delay after alarm is changed to commonly record a video, to obtain the alarm video file at the first delay moment to the second delay moment；When backup server obtains alarm video file from vehicle-mounted DVR, learn whether acquired alarm video file is complete by the comparison to alarm video file information and local alarm video file, and then by the upload command with document misregistration amount make vehicle-mounted DVR from document misregistration amount to backup server upload the alarm video file, to realize breakpoint transmission.The present invention can extend the video time before and after the alarm moment, guarantee to record complete cause of accident in alarm video recording, and ensure that the complete upload in the obstructed alarm Video data of 3G network.
Description
Technical field
The present invention relates to Vehicular video monitoring field, in particular to a kind of vehicle-mounted DVR(Digital Video of storage
Recorder, hard disk video recorder) alarm video clip method.
Background technique
Vehicle-mounted DVR belongs to the subdivision field of traditional built-in hard disk video tape recorder, it is with digital video-audio coding techniques
A kind of emerging special product applied and grown up on vehicle.It is each that vehicle-mounted DVR is widely used in public transport, long-distance passenger transportation etc.
Kind mobile traffic.
When being applied to long-distance passenger transportation, bus, the video clip to DVR vehicle-mounted when accident occurs is needed to carry out on immediately
Pass, by vehicle-mounted DVR record about when accident occurs and Video data in accident surrounding time section occur being uploaded to backup services
Device, and then the tracking convenient for the acquisition of accident video data and to cause of accident.Backup server is set to far from vehicle-mounted DVR
Place (such as unit is commanded in the management of passenger company, public transport company), the Video data of vehicle-mounted DVR wirelessly such as 3G
(3rd-generation, 3rd generation mobile communication technology) network is uploaded to backup server, vehicle-mounted DVR and backup server it
Between communication wirelessly for example 3G network carry out.
In the vehicle-mounted DVR course of work, vehicle-mounted DVR records a video always, and the Video data in most of the time is
The Video data normally driven a vehicle when not having accident, the tracking that accident occurs for this part of Video data is useless,
And the reason of only the Video data needs of a period of time before and after accident generation are tracked, can get accident.
Therefore, within the most of the time of vehicle-mounted DVR work, the Video data for not needing normally to drive a vehicle when not having accident is uploaded
To backup server, and only will be when accident occurs and the Video data that occurs before and after accident in a period of time be uploaded to backup clothes
Business device.On the one hand the benefit done so avoids Video data and is uploaded to 3G network bring pressure in real time, saves 3G
Internet resources, on the other hand save the capacity of backup server, in another aspect, being uploaded to the shorter video recording of backup server
Data (when accident occurs and occur the Video data before and after accident in a period of time) are (vehicle-mounted compared to longer Video data
That is recorded in the DVR course of work is all including the Video data normally driven a vehicle when not having accident and when accident occurs and hair
Make trouble thus the Video data in a period of time of front and back) for, easily facilitate and check to accident occurs.
Vehicle-mounted DVR will be uploaded to backup server with the Video data occurred in accident front and back a period of time when accident occurs
Realization process there are mainly two types of method.
First method is that vehicle-mounted DVR is in video process, in its memory in the first few minutes at buffering current time
Video data, when accident alarming occurs, warning message is sent to backup server, backup clothes by 3G network by vehicle-mounted DVR
After business device receives the warning message that vehicle-mounted DVR is uploaded, actively it is buffered in its memory to vehicle-mounted DVR acquisition by 3G network
The Video data in a few minutes before alarming, and pass to backup server from vehicle-mounted DVR long in this section of Video data and complete
Afterwards, backup server continues through the real-time recording data that 3G network obtains vehicle-mounted DVR, until alarm after a few minutes be
Only.
Second method is that vehicle-mounted DVR is in video process, in its memory in the first few minutes at buffering current time
Video data, when accident alarming occurs, vehicle-mounted DVR is actively buffered in its memory to backup server upload by 3G network
The real-time recording data of the Video data and vehicle-mounted DVR in a few minutes before alarming simultaneously are stored by backup server,
A few minutes position after alarm.
Above-mentioned first method or second method are either used, will appear identical problem:
1, it is limited by vehicle-mounted DVR memory source, the Video data in the first few minutes at current time cannot store very
It is more, and then when alarming, the Video data occurred in the first few minutes at alarm moment cannot store very much, and then cause
The true cause that accident occurs can not be inquired in shorter Video data；
2, it during Video data is uploaded by 3G network, if network interruption, alarms in a period of time of front and back
The missing of partial data will occur in Video data.
Summary of the invention
In view of this, the present invention provides a kind of method for storing vehicle-mounted DVR alarm video clip, when being alarmed with increasing
Video data before quarter, and guarantee that vehicle-mounted DVR uploads the complete of alarm Video data to backup server.
The technical solution of the application is achieved in that
A method of storing vehicle-mounted DVR alarm video clip, comprising:
Preset the first delay and the second delay；
When there is zero defects generation, the vehicle-mounted DVR keeps video state；
When accident alarming occur when, the vehicle-mounted DVR by alarm occur the moment before first delay at the time of place beginning
Video recording is changed to alarm video recording by commonly recording a video；
After accident alarming, the vehicle-mounted DVR after accident alarming second delay at the time of place beginning
Video recording is changed to commonly record a video by alarm video recording；
Backup server obtains from the vehicle-mounted DVR and stores the alarm video recording.
Further, the backup server obtains from the vehicle-mounted DVR and stores alarm video recording, to terminate in accident alarming
It is immediately obtained after the second delay moment afterwards and stores alarm video recording.
Further, the backup server obtains from the vehicle-mounted DVR and stores alarm video recording, periodically to obtain and storing
Alarm video recording.
Further, the backup server, which periodically obtains from the vehicle-mounted DVR and stores alarm video recording, includes:
Preset first time period；
The backup server inquires listed files in the first time period to the vehicle-mounted DVR, to obtain the report
Alert video file information；
The alarm video file arranged sequentially in time according to the moment that starts to record a video；
Since the alarm video file that the last one is recorded, the backup server is successively obtained from the vehicle-mounted DVR
The alarm video file.
Further,
When the backup server obtains any alarm video file from the vehicle-mounted DVR, the backup server is first examined
It looks into and locally whether has obtained the alarm video file；
If the backup server did not obtain the alarm video file, the alarm video file is obtained；
If the backup server had obtained the alarm video file, local alarm obtained is checked
The size of video file whether and it is big from file recorded in the alarm video file information obtained in the vehicle-mounted DVR
It is small whether consistent；
If it is inconsistent, the backup server sends the upload command for having document misregistration amount to the vehicle-mounted DVR,
The vehicle-mounted DVR from the document misregistration amount to the backup server upload the alarm video file；
If consistent, the backup server continues to obtain next section of alarm video file from the vehicle-mounted DVR.
Further, the alarm video information including alarm video file name, file size and starts the moment of recording a video.
Further, the first time period is 1 hour~1 day.
Further, first delay is 1~10 minute, and second delay is 1~10 minute.
Further, when zero defects alarms generation, the type of the vehicle-mounted DVR video recording is common video recording.
Further, the backup server is obtained from the vehicle-mounted DVR by 3G network and stores alarm video recording.
From above scheme as can be seen that compared with prior art, the side of the vehicle-mounted DVR alarm video clip of storage of the invention
Method does not carry out alarm video recording by the way of the Video data interior for the previous period at vehicle-mounted DVR memory buffer current time
The upload of data, but when accident alarming occur when, by alarm occur the moment before first delay at the time of place beginning video recording
It is changed to alarm video recording by commonly recording a video, after accident alarming, the vehicle-mounted DVR second prolonging after accident alarming
When at start video recording again by alarm video recording be changed to commonly record a video, so just from accident alarming generation before first delay when
Carve start to accident alarming after second delay at the time of a period of time in video record in order to alarm video recording, when to
When backup server uploads, do not need to visit again the Video content buffered in memory, but it is directly that the alarm video recording of this section is straight
Row upload is tapped into, by the setting to the first delay and the second delay, when can extend the video recording before and after the alarm moment occurs
Between, it can guarantee to record complete accident occurrence cause in alarm video recording.In addition, the backup server is from described vehicle-mounted
When DVR obtains alarm video file, institute is learnt by the comparison to alarm video file information and local alarm video file
Whether the alarm video file of acquisition is complete, and then makes vehicle-mounted DVR from file by the upload command with document misregistration amount
Start to upload the alarm video file to the backup server at offset, and then realize breakpoint transmission, ensure that in 3G
The complete upload of the obstructed alarm Video data of network.
Detailed description of the invention
Fig. 1 is the schematic diagram of the method for the vehicle-mounted DVR alarm video clip of storage of the invention；
Fig. 2 is the flow embodiment schematic diagram of the method for the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, hereinafter, referring to the drawings and the embodiments,
Invention is further described in detail.
As shown in Figure 1, the method for the vehicle-mounted DVR alarm video clip of storage of the invention includes:
Preset the first delay and the second delay；
When there is zero defects generation, the vehicle-mounted DVR keeps video state；
When zero defects alarms generation, the type of the vehicle-mounted DVR video recording is common video recording；
When accident alarming occur when, the vehicle-mounted DVR by alarm occur the moment before first delay at the time of place beginning
Video recording is changed to alarm video recording by commonly recording a video；
After accident alarming, the vehicle-mounted DVR after accident alarming second delay at the time of place beginning
Video recording is changed to commonly record a video by alarm video recording；
Backup server obtains from the vehicle-mounted DVR and stores the alarm video recording.
Wherein, common video recording refers to: the video recording recorded according to the time period configured on vehicle-mounted DVR by user.It is practical
In application, can generally be arranged to record a video for whole day 24 hours, can also be set as needed as other times section, such as be arranged in 9:00
The video recording of the periods such as~18:00,0:00~6:00,11:00~15:00,18:00~24:00.
In the present invention, the described alarm video recording refers to: alarm occur before the first delay moment to the after alarming
The video clip at two delay moment.
In the present invention, video recording type includes two kinds, i.e. commonly video recording and alarm video recording.One section of video clip is come
Say or be commonly to record a video or be alarm video recording.
Wherein, in the present invention, the backup server obtains from the vehicle-mounted DVR and stores alarm video recording, can use
Two ways:
First way: after the second delay moment after accident alarming, the backup server is from the vehicle
It carries DVR and immediately obtains and store alarm video recording, this kind of mode can enable backup server obtain alarm video recording in earliest time
Data are that response, processing accident are raced against time as early as possible；
The second way: the backup server periodically obtains from the vehicle-mounted DVR and stores alarm video recording, this kind of mode
The concentration for realizing alarm Video data uploads and management.
The second way specifically includes:
Preset first time period；
The backup server inquires listed files in the first time period to the vehicle-mounted DVR, to obtain the report
Alert video file information；
The alarm video file arranged sequentially in time according to the moment that starts to record a video；
Since the alarm video file that the last one is recorded, the backup server is successively obtained from the vehicle-mounted DVR
The alarm video file.
Imperfect, the of the invention side for the alarm video file that backup server is obtained from the vehicle-mounted DVR in order to prevent
Method further comprises:
When the backup server obtains any alarm video file from the vehicle-mounted DVR, the backup server is first examined
It looks into and locally whether has obtained the alarm video file；
If the backup server did not obtain the alarm video file, the alarm video file is obtained；
If the backup server had obtained the alarm video file, local alarm obtained is checked
The size of video file whether and it is big from file recorded in the alarm video file information obtained in the vehicle-mounted DVR
It is small whether consistent；
If it is inconsistent, the backup server sends the upload command for having document misregistration amount to the vehicle-mounted DVR,
The vehicle-mounted DVR from the document misregistration amount to the backup server upload the alarm video file；
If consistent, the backup server continues to obtain next section of alarm video file from the vehicle-mounted DVR.
In the present invention, the alarm video information is including alarm video file name, file size and starts the moment of recording a video.
When the backup server is periodically obtained from the vehicle-mounted DVR and stores alarm video recording, it can according to need and set
First time period, such as 1 hour~1 day are set, when it is 1 hour that first time period, which is arranged, backup server is just looked into vehicle-mounted DVR
The listed files in 1 hour is ask, when setting first time period is 1 day, backup server just inquires the text in 1 day to vehicle-mounted DVR
Part list.Those skilled in the art can be according to the disclosure of the present invention and according to practical driving monitoring when needing to first
Between section be configured, such as 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours, 12 hours, (24 is small within 18 hours, 1 day
When) etc., the period other than 1 hour~1 day also can be set.
It records a video in order to obtain most complete, comprehensive accident alarming to obtain the video record that front and back occurs for accident, the
One delay may be configured as 1~10 minute, and the second delay may be configured as 1~10 minute, for example, the first delay may be configured as 1 minute,
2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes, 10 minutes, second delay may be configured as 1 minute,
2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes, 10 minutes.When the delay of setting is shorter, example
If the first delay was arranged at 1~5 minute, the critical event before may having alarm occurs other than 5 minutes without remembering
It records in alarm video file, just needs to increase the setting time of the first delay in this way, such as be set to 10 minutes etc., for another example second
Delay was arranged at 1~5 minute, the event handling result after may having alarm and terminating occur other than 5 minutes without
It is recorded in alarm video file, just needs to increase the setting time of the second delay in this way, such as is set to 10 minutes etc..This field
Technical staff can need according to the disclosure of the present invention and according to practical driving monitoring to the first delay and the second delay
It is configured, may be alternatively provided as being greater than 10 minutes as needed.
It is mobile with automobile because vehicle-mounted DVR is installed on automobile in the present invention, and backup server is set to far from vapour
The place of vehicle, and be fixed at one, such as unit, vehicle-mounted DVR and backup server are commanded in the management of passenger company, public transport company
Between by 3G network carry out communication and data transmission.The above method of the invention can solve 3G while the car is driving
Network signal unstable and the problem of bring alarm video file fragment deletion.
Below in conjunction with a specific embodiment of the method for Fig. 2 DVR alarm video clip vehicle-mounted to the storage invented herein
It is illustrated.
In the present embodiment, the first delay and the second delay are disposed as 5 minutes, and first time period is set as 1 day.
The process of the present embodiment mainly includes that vehicle-mounted DVR flow journey and backup server obtain video recording text of alarming from vehicle-mounted DVR
Part process two parts.
Wherein, vehicle-mounted DVR flow journey mainly includes the following contents.
Step A1, vehicle-mounted DVR keeps video state, and when not having alarm, the video recording type of vehicle-mounted DVR video recording is general
Logical video recording.
Step A2, vehicle-mounted DVR detects that alarm generates.
Step A3, the video recording type started at preceding 5 minute moment of alarming is changed to alarm record by commonly recording a video by vehicle-mounted DVR
Picture.
Step A4, the video recording type currently recorded a video is set alarm video recording by vehicle-mounted DVR.
Step A5, vehicle-mounted DVR detects that alarm terminates, and vehicle-mounted DVR continues to record a video at this time, and records a video type still
For alarm video recording.
Step A6, it is reached after alarm at 5 minute moment when the time, vehicle-mounted DVR continues to record a video, and can start at this time
Video recording Type Change be common video recording.
So far, vehicle-mounted DVR just recorded section alarm video file, and an alarm video recording process of vehicle-mounted DVR terminates.
It mainly includes the following contents that backup server, which obtains alarm video file process from vehicle-mounted DVR,.
Step B1, backup server inquires the video file list in 1 day to vehicle-mounted DVR, wherein only inquiry alarm video recording
The video file of type only inquires alarm video file.
Step B2, vehicle-mounted DVR returns to the file information of alarm video file to backup server, and the file information includes text
Part name, file size start moment etc. of recording a video.
Step B3, backup server judges whether the video file list obtained is sky, if it is sky, waits 10 seconds
Step B1 is executed again, if being not sky, thens follow the steps B4.
In this step B3, because not alarming always when running, it is possible that within a very long time
Video file of not alarming generates, and backup server only inquires the video file list about alarm video file, so institute
Video file list acquired in backup server may be sky.In addition, waiting 10 seconds time that can set in this step B3
It is set to the shorter time such as 5 seconds, may be set to be the longer time such as 20 seconds~1 hour etc..
Step B4, the file in the video file list inquired is arranged according to video time sequence, video time is early
Come before, after the coming of video time evening, form listed files queue R, first alarm video file be denoted as r1, second
Alarm video file be denoted as r2 ..., the last one alarm video file be denoted as rn.
Step B5 to step B7 is that backup server is obtained since the last one alarms video file rn, when having obtained report
After alert video file rn, alarm video file rn-1 is obtained, is finished until alarm video file r1 is obtained, it specifically, can be same
Deterministic process of the step B5 into step B7 is crossed to realize.
Step B5, backup server obtains alarm video file rn from vehicle-mounted DVR.
Step B6, n is updated to n-1, i.e. n=n-1.
Step B7 judges whether n is 0, if it is 0, thens follow the steps B1, no to then follow the steps B5.
If original alarm video file is 5 altogether, finished by after step B5, alarm video file r5 has been obtained,
This alarm video file remains 4 altogether, the last one alarm video file is alarm video file r4, by subsequent step B7
Judgement after when going to step B5, original alarm video file rn, i.e. alarm video file r5 have just had been changed to new alarm record
As file rn, i.e. alarm video file r4.
The another aspect of the setting of step B7 is allowed for can return to after having obtained all alarm video files
Step B1 continues to obtain the new alarm video file being likely to occur.
Backup server obtains alarm video file process from vehicle-mounted DVR, in step B5, is obtaining each
Before alarm video file:
Backup server first checks whether it had locally obtained the alarm video file；
If backup server did not obtain the alarm video file, the alarm video file is obtained；
If obtained, backup server checks the alarm actual size of video file acquired in local and vehicle-mounted
Whether the size of the alarm video file recorded in the file information that DVR is returned is consistent；
If it is inconsistent, backup server sends the upload command for having document misregistration amount to the vehicle-mounted DVR, it is described
Vehicle-mounted DVR from the document misregistration amount to the backup server upload the alarm video file；
If consistent, backup server executes the process of step B6, step B7, step B5 to continue to obtain from vehicle-mounted DVR
Remove one section of alarm video file.
In the file information that the actual size of alarm video file and vehicle-mounted DVR are returned acquired in backup server local
The alarm video file of record it is not of uniform size, illustrate backup server locally current recorded file and imperfect,
Incomplete reason may be as 3G network it is unstable caused by interrupted communication link.Step in above-mentioned steps B5 realizes
Backup server from vehicle-mounted DVR acquisition in breakpoint transmission.
From above-mentioned steps B3, it can be seen that in no alarm video file, backup server is each time to vehicle-mounted
The interval time for the video file list that DVR was inquired in 1 day, which can according to need, is arranged different durations.When set duration
It is, for example, less than 1 minute when shorter, then alarm video file new caused by the alarm for one, after its formation most
Server can be backed up in more 1 minute time to know, and is uploaded in backup server in subsequent process.From this
Place can also realize the purpose for obtaining alarm video file immediately as can be seen that the duration is reasonably arranged.
The method of the vehicle-mounted DVR alarm video clip of above-mentioned storage of the invention, it is not current using vehicle-mounted DVR memory buffer
The mode of the Video data interior for the previous period at moment carries out the upload of alarm Video data, but works as accident alarming
When, by alarm occur the moment before first delay at the time of place start video recording by commonly record a video be changed to alarm record a video, work as thing
Therefore after alarming, the video recording that the vehicle-mounted DVR starts at the second delay after accident alarming is recorded a video more by alarm again
Be changed to commonly record a video, so just since accident alarming generation before first delay at the time of to accident alarming after second
The video record in a period of time at the time of delay, when uploading to backup server, does not need to revisit for video recording of alarming
It asks the Video content buffered in memory, but is directly directly uploaded this section of alarm video recording, by prolonging to first
When and second delay setting, can extend occur alarm the moment before video recording, can guarantee the alarm video recording in recorded
Whole accident occurrence cause.In addition, when the backup server obtains alarm video file from the vehicle-mounted DVR, by report
The comparison of alert video file information and local alarm video file and learn whether acquired alarm video file complete, in turn
By with document misregistration amount upload command make vehicle-mounted DVR from document misregistration amount to the backup server upload
The alarm video file, and then realize breakpoint transmission, ensure that the obstructed alarm Video data of 3G network it is complete on
It passes.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (9)
1. a kind of method for storing vehicle-mounted DVR alarm video clip, does not use the last period at vehicle-mounted DVR memory buffer current time
The mode of Video data in time carries out the upload of alarm Video data, this method comprises:
Preset the first delay and the second delay；
When there is zero defects generation, the vehicle-mounted DVR keeps video state；
When accident alarming occur when, the vehicle-mounted DVR by alarm occur the moment before first delay at the time of place beginning video recording,
Video recording type is changed to alarm video recording by commonly recording a video；
After accident alarming, the vehicle-mounted DVR after accident alarming second delay at the time of place beginning video recording,
Video recording type is changed to commonly record a video by alarm video recording；
Backup server obtains from the vehicle-mounted DVR and stores the alarm video recording；
Wherein, common video recording refers to: the video recording recorded according to the time period configured on vehicle-mounted DVR by user；
Alarm video recording refers to: the video film at the second delay moment after the first delay moment to alarm before alarm generation
Section.
2. the method for the vehicle-mounted DVR alarm video clip of storage according to claim 1, it is characterised in that: the backup clothes
Business device obtains from the vehicle-mounted DVR and stores alarm video recording, is delayed after the moment immediately for second after accident alarming
It obtains and stores alarm video recording.
3. the method for the vehicle-mounted DVR alarm video clip of storage according to claim 1, it is characterised in that: the backup clothes
Business device obtains from the vehicle-mounted DVR and stores alarm video recording, periodically to obtain and storing alarm video recording.
4. the method for the vehicle-mounted DVR alarm video clip of storage according to claim 3, it is characterised in that: the backup clothes
Business device periodically obtains from the vehicle-mounted DVR and stores alarm video recording
Preset first time period；
The backup server inquires listed files in the first time period to the vehicle-mounted DVR, to obtain the alarm record
As the file information；
The alarm video file arranged sequentially in time according to the moment that starts to record a video；
Since the alarm video file that the last one is recorded, described in the backup server is successively obtained from the vehicle-mounted DVR
Alarm video file.
5. the method for the vehicle-mounted DVR alarm video clip of storage according to claim 4, it is characterised in that:
When the backup server obtains any alarm video file from the vehicle-mounted DVR, the backup server first checks this
Whether ground has obtained the alarm video file；
If the backup server did not obtain the alarm video file, the alarm video file is obtained；
If the backup server had obtained the alarm video file, the local alarm video recording obtained is checked
The size of file whether and from file size recorded in the alarm video file information obtained in the vehicle-mounted DVR be
It is no consistent；
If it is inconsistent, the backup server sends the upload command for having document misregistration amount to the vehicle-mounted DVR, it is described
Vehicle-mounted DVR from the document misregistration amount to the backup server upload the alarm video file；
If consistent, the backup server continues to obtain next section of alarm video file from the vehicle-mounted DVR.
6. the method for the vehicle-mounted DVR alarm video clip of storage according to claim 4, it is characterised in that: the alarm record
As information including alarm video file name, file size and starts the moment of recording a video.
7. the method for the vehicle-mounted DVR alarm video clip of storage according to claim 4, it is characterised in that: when described first
Between section be 1 hour~1 day.
8. the method for the vehicle-mounted DVR alarm video clip of storage according to claim 1, it is characterised in that:
First delay is 1~10 minute, and second delay is 1~10 minute.
9. the method for the vehicle-mounted DVR alarm video clip of storage according to any one of claims 1 to 8, it is characterised in that: institute
Backup server is stated to obtain by 3G network from the vehicle-mounted DVR and store alarm video recording.
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| CN107682652A (en) * | 2017-10-30 | 2018-02-09 | 深圳市麦道微电子技术有限公司 | A kind of urgent document recording system of hommization |
| CN109639501B (en) * | 2018-12-29 | 2022-04-12 | 浙江宇视科技有限公司 | Abnormal record information storage method and device |
| CN110225278A (en) * | 2019-06-25 | 2019-09-10 | 歌尔科技有限公司 | Acquisition methods, device and the equipment of multimedia file |
| CN111447473A (en) * | 2020-03-03 | 2020-07-24 | 深圳市天视通电子科技有限公司 | Alarm video processing method and system |
| CN112258778B (en) * | 2020-10-12 | 2022-09-06 | 南京云思创智信息科技有限公司 | Micro-expression real-time alarm video recording method |
| CN112752100B (en) * | 2020-12-28 | 2022-08-12 | 杭州海康威视系统技术有限公司 | Method and device for determining video integrity and readable storage medium |
| CN113763594A (en) * | 2021-08-25 | 2021-12-07 | 深圳市全景达科技有限公司 | Driving recording method, system, device and storage medium based on 5G network |
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