CN102821302B - Method for downloading video, gateway device and network video monitor and control system - Google Patents
Method for downloading video, gateway device and network video monitor and control system Download PDFInfo
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- CN102821302B CN102821302B CN201210260315.0A CN201210260315A CN102821302B CN 102821302 B CN102821302 B CN 102821302B CN 201210260315 A CN201210260315 A CN 201210260315A CN 102821302 B CN102821302 B CN 102821302B
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Abstract
The application relates to a kind of method for downloading video, gateway device and network video monitor and control system, described method is used for video file being downloaded to by gateway device the network video monitor and control system comprising network video monitoring platform and networking client from Network Video Surveillance front end, said method comprising the steps of: S1. gateway device receives the download request of the video file of networking client download network video monitoring front-end, and calls the playing back videos interface of Network Video Surveillance front end according to described download request; S2. perform and obtain video file from Network Video Surveillance front end and the video file got be stored in the video file obtaining step of the cyclic memory of gateway device, and perform while performing video file obtaining step and from cyclic memory, obtain video file and the video file video file got being sent to networking client exports step.The application can solve problem incompatible between the network video monitoring platform of different vendor and Network Video Surveillance front end.
Description
Technical field
The application relates to technical field of video monitoring, particularly relates to a kind of method for downloading video, gateway device and network video monitor and control system.
Background technology
In recent years, along with the development of Video Supervision Technique and user are for the demand day by day of video monitoring, video monitoring system has been widely used in all kinds of industry and enterprise/commercial market, and has become part important in safe precaution system.User can view the video image of each video monitoring front-end (as video camera, monitor, hard disc video machine etc.) that it is disposed easily by video monitoring platform.For above-mentioned application, a lot of video monitoring front-end manufacturer all develops corresponding network video monitoring platform, but, these video monitoring platforms are normally developed for a certain video monitoring front-end, therefore lack extensibility, and the application that its function is supported also is subject to corresponding restriction, such as, the video monitoring platform of each manufacturer can only the video monitoring front-end of compatible manufacturer oneself, is incompatible between the video monitoring platform of different vendor and video monitoring front-end.
Fig. 1 is under certain vendor network video monitoring platform, obtains the method for downloading video schematic diagram being stored in the video file of certain vendor network video monitoring front-end.As shown in the figure, the download request (signaling namely in Fig. 1) of the video file that networking client sends by certain vendor network video monitoring platform is forwarded to certain vendor network video monitoring front-end, starts on designated ports to monitor after certain vendor network video monitoring front-end receives the download request of video file; After monitoring successfully, the transmission channel of video file is directly set up between networking client and certain vendor network video monitoring front-end, the video file be stored in certain vendor network video monitoring front-end is read, and the video file read is sent to networking client.This method for downloading video carries out under certain vendor network video monitoring platform, and the Network Video Surveillance front end of employing is also that certain manufacturer oneself produces, and therefore there is not compatible problem; If but certain vendor network video monitoring front-end were changed into the Network Video Surveillance front end (being called for short outer manufacturer's Network Video Surveillance front end hereinafter) of other manufacturers produce, incompatible problem might be there is, thus cause video file to be read.Under normal circumstances, " compatibility " refers to the degree cooperatively interacted between several hardware, between several software or between several software and hardware, or refers to the conversion without the need to complexity between several software, can share mutual data easily; But, it should be noted that, what " incompatible " mentioned here can comprise between hardware (as between the interface of certain vendor network video monitoring platform and the interface of outer manufacturer's Network Video Surveillance front end) is incompatible, between software (as the interface protocol of certain vendor network video monitoring platform and the interface protocol of outer manufacturer's Network Video Surveillance front end) incompatible and hardware and software between (as between the interface of certain vendor network video monitoring platform and the interface protocol of outer manufacturer's Network Video Surveillance front end) incompatible.
Continue, Fig. 2 is under certain vendor network video monitoring platform, is obtained the method for downloading video schematic diagram being stored in the video file of outer manufacturer's Network Video Surveillance front end by gateway device.As shown in the figure, when (namely certain vendor network video monitoring front-end is replaced by outer manufacturer's Network Video Surveillance front end, the Network Video Surveillance front end of other manufacturers produce) time, because production firm is different, cause there is incompatible problem between outer manufacturer's Network Video Surveillance front end and certain vendor network video monitoring platform, thus the video file being stored in outer manufacturer's Network Video Surveillance front end cannot be obtained.For the problems referred to above, have developed gateway device to be called the playing back videos interface of outer manufacturer's Network Video Surveillance front end by it.Particularly, the download request of the video file that networking client sends by certain vendor network video monitoring platform is forwarded to gateway device, gateway device calls the playing back videos interface of outer manufacturer's Network Video Surveillance front end, and the video file being stored in outer manufacturer's Network Video Surveillance front end is downloaded in gateway device, then, perform the flow process of method for downloading video as shown in Figure 1, namely, read the video file be stored in gateway device, and by the video file transfer passage set up between networking client and gateway device, the video file read is sent to networking client.Although this method for downloading video can overcome compatible problem, networking client being caused when downloading the video file of outer manufacturer's Network Video Surveillance front end, expending the double time; And video file (particularly larger video file) is being downloaded in the process of gateway device from outer manufacturer's Network Video Surveillance front end, user cannot perception, and namely user cannot judge when video file can have been downloaded; In addition, for gateway device, the disk space of himself is limited, therefore, possibly cannot distribute enough memory spaces for super large video file.
In sum, what current urgent need solved is how to realize under consolidated network video monitoring platform compatible different vendor Network Video Surveillance front end and can the problem of real-time prompting user download progress in downloading process, therefore, be necessary that the technological means proposing to improve is with head it off.
Summary of the invention
In view of the defect of above-mentioned prior art, the main purpose of the application is to provide a kind of method for downloading video and gateway device, to solve the problems referred to above that prior art exists.
For achieving the above object, the embodiment of the application provides a kind of method for downloading video, for video file being downloaded to network video monitor and control system from Network Video Surveillance front end by gateway device, described network video monitor and control system comprises: network video monitoring platform and networking client, said method comprising the steps of: gateway device described in S1. receives the download request that described networking client downloads the video file of described Network Video Surveillance front end, and calls the playing back videos interface of described Network Video Surveillance front end according to described download request; S2. perform and obtain described video file from described Network Video Surveillance front end and the described video file got be stored in the video file obtaining step of the cyclic memory of described gateway device, and perform while performing described video file obtaining step and from described cyclic memory, obtain described video file and the video file described video file got being sent to described networking client exports step.
The application embodiment still provides a kind of gateway device, for video file is downloaded to network video monitor and control system from Network Video Surveillance front end, described network video monitor and control system comprises: network video monitoring platform and networking client, and described gateway device comprises: cyclic memory: for storing described video file; Receive calling module, download the download request of the video file of described Network Video Surveillance front end for receiving described networking client, and call the playing back videos interface of described Network Video Surveillance front end according to described download request; Obtain sending module, obtain described video file from described Network Video Surveillance front end for performing and the described video file got be stored in the video file obtaining step of the cyclic memory of described gateway device, and performing while performing described video file obtaining step and from described cyclic memory, obtain described video file and the video file described video file got being sent to described networking client exports step.
The embodiment of the application further provides a kind of network video monitor and control system, comprising: network video monitoring platform, networking client, gateway device and Network Video Surveillance front end.
In sum, the method for downloading video of the application, gateway device and video monitoring system can solve problem incompatible between the network video monitoring platform of different production firm and Network Video Surveillance front end, and while video file is downloaded to gateway device from Network Video Surveillance front end, in real time, rapidly the video file be stored in gateway device can be sent to networking client; In addition, can also in the download progress of the real-time display video file of networking client, and whether automatically prompting user completes download.
Accompanying drawing explanation
Fig. 1 is under certain vendor network video monitoring platform, obtains the method for downloading video schematic diagram being stored in the video file of certain vendor network video monitoring front-end;
Fig. 2 is under certain vendor network video monitoring platform, is obtained the method for downloading video schematic diagram being stored in the video file of outer manufacturer's Network Video Surveillance front end by gateway device;
Fig. 3 is the embodiment flow chart of the application's method for downloading video;
Fig. 4 is that the application calls the method for downloading video schematic diagram of Network Video Surveillance front end by gateway device;
Fig. 5 is the schematic diagram of cyclic memory in Fig. 4;
Fig. 6 is the flow chart of Fig. 5 thread 1;
Fig. 7 is the flow chart of Fig. 5 thread 2;
Fig. 8 is the example structure block diagram of the application's gateway device; And
Fig. 9 is the structural representation of the application's network video monitor and control system.
Embodiment
The embodiment of the application will be described in detail below.It should be noted that the embodiments described herein is only for illustrating, not for limiting the application.
Fig. 3 is the embodiment flow chart of the application's method for downloading video.The method for downloading video of the present embodiment is used for, by gateway device, video file is downloaded to network video monitor and control system from Network Video Surveillance front end, and described network video monitor and control system comprises: network video monitoring platform and networking client.As shown in the figure, said method comprising the steps of S1 and S2.
S1. gateway device receives the download request of the video file of networking client download network video monitoring front-end, and calls the playing back videos interface of Network Video Surveillance front end according to described download request.
Fig. 4 is that the application calls the method for downloading video schematic diagram of Network Video Surveillance front end by gateway device.As shown in the figure, in one embodiment, when after the download request receiving the video file that networking client sends, gateway device calls the playing back videos interface of Network Video Surveillance front end according to described download request, namely set up video file transfer passage with Network Video Surveillance front end, to obtain the video file corresponding to described download request from Network Video Surveillance front end; Meanwhile, gateway device opens up a cyclic memory within it in advance in also depositing, for storing the video file got from Network Video Surveillance front end.
Continue, in one embodiment, after step S1, before step S2, also comprise step S11. gateway device and networking client sets up video file transfer passage.Specifically, in one embodiment, when after the download request receiving the video file sent from networking client, gateway device and networking client set up video file transfer passage, the video file being stored in cyclic memory is sent to networking client.
It should be noted that, above-mentioned gateway device is configured between networking client and Network Video Surveillance front end, for setting up video file transfer passage with networking client and Network Video Surveillance front end respectively, thus the video file being stored in Network Video Surveillance front end is enable to be sent to networking client by gateway device.
In addition, in one embodiment, after setting up video file transfer passage with networking client, the video file obtained from Network Video Surveillance front end to download in the cyclic memory that gateway device opens up in advance with maximal rate by gateway device, and send it to networking client with maximal rate, thus achieve the instantaneous transmission of video file simultaneously.It should be noted that maximal rate mentioned here refers to the maximum transfer speed that can reach based on factor video files such as gateway device configuration, the network bandwidths.
S2. perform and obtain video file from Network Video Surveillance front end and the video file got be stored in the video file obtaining step of the cyclic memory of gateway device, and perform while performing video file obtaining step and from cyclic memory, obtain video file and the video file video file got being sent to networking client exports step.
Fig. 5 is the schematic diagram of cyclic memory in Fig. 4.As shown in the figure, thread 1 and thread 2 represent that in step S2, video file obtaining step and video file export the implementation of step respectively.In one embodiment, when receive the video file that video monitoring platform sends download request and after setting up video file transfer passage with Network Video Surveillance front end, gateway device obtains the video file corresponding to described download request immediately from Network Video Surveillance front end, and is downloaded to by the video file got in its cyclic memory opened up in advance; Meanwhile, the video file be stored in cyclic memory is sent to networking client by gateway device.It should be noted that video file obtaining step and video file export step here to carry out simultaneously, therefore greatly save download and the transmitting time of video file.
With reference to foregoing, in one embodiment, perform video file obtaining step in step S2 and specifically comprise: video file is downloaded to cyclic memory by S210.; S212. whether fullly detect cyclic memory, if it is continue step S214, otherwise go to step S216; S214. video file obtaining step is suspended the first preset time period; S216. continue from Network Video Surveillance front end downloading video files, until video file has been downloaded.
Fig. 6 is the flow chart of Fig. 5 thread 1.As shown in the figure, in one embodiment, judge whether video file has been downloaded in video file obtaining step by following steps, that is, whether required video file is downloaded to gateway device from Network Video Surveillance front end.Specifically, in one embodiment, first, in step S210, gateway device will download to cyclic memory from the video file that Network Video Surveillance front end gets according to download request; Then, in step S212, whether full detect cyclic memory, if it is continue to perform step S214, acquisition video file step is suspended the first preset time period, that is, after wait first preset time period, when detect cyclic memory less than time continue again obtain video file; Otherwise perform step S216. to continue from Network Video Surveillance front end downloading video files, until video file has been downloaded, that is, if cyclic memory less than, then represent in cyclic memory have enough memory spaces to store video file to be obtained, so continue to perform video file obtaining step; Finally, in step S218, judge whether video file has been downloaded, and if it is puts end mark, that is, terminate video file obtaining step; Otherwise repeat step S210-S216 as above.
It should be noted that, here be not very strict to the setting of the first preset time period, usual CPU can be each thread dispatch time, and the object suspending the first preset time period herein allows other thread (as sent thread) as early as possible the video file be stored in cyclic memory is sent to networking client exactly, that is, as long as detect that cyclic memory is full just video file obtaining step must be suspended a period of time, because there is no enough spaces to store the video file got in cyclic memory.Such as, suppose that gateway device opens the cyclic memory of 5MB, if calculate according to the bandwidth of 10MB, if the acquisition speed of video file is 1MB/ second, so after 5 seconds, cyclic memory is full, that is, will wait for that at most the time in 5 seconds just can continue to obtain video file.
Continue, in one embodiment, perform video file output step in step S2 and specifically comprise: S220. obtains video file from cyclic memory; Whether be empty, if it is continue step S224, otherwise go to step S228 if S222. detecting cyclic memory; S224. judge whether video download file is sent completely, if it is informing network client video file is sent completely, otherwise goes to step S226; S226., after time-out second preset time period, described step S220 is returned; S228. video file is sent to networking client.
Fig. 7 is the flow chart of Fig. 5 thread 2.As shown in the figure, in one embodiment, judge whether whether export video file in step at video file is sent completely, that is, be sent to networking client by the video file be stored in cyclic memory by following steps.Specifically, in one embodiment, first, in step S220, gateway device obtains video file from cyclic memory, then, whether in step S222, detect cyclic memory is empty, if otherwise still have video file to be sent in expression cyclic memory, so continue to perform step S228, video file is sent to networking client, otherwise perform step S224, judge whether video download file is sent completely further, if it is informing network client video file is sent completely and terminates video file and exports step, otherwise continue to perform step S226, after video file being exported step and suspending the second preset time period, whether again detect cyclic memory is empty, until terminate to video file transfer step, otherwise repeat step S220-224 as above.
It should be noted that the second preset time period here and the first preset time period as above similar, do not need to carry out strict setting, but determine according to the actual transmission situation of video file.In addition, it is also to be noted that, whether the application is by being empty to cyclic memory and whether whether file be sent completely and terminate to judge to video file transfer, but, judge that the method that video file transfer terminates has a lot, such as also compare by the size of the video file size of the video file be stored in cyclic memory and networking client received and judge whether video file transfer completes, therefore the embodiment of the application is not limited to above-mentioned determination methods.
In addition, in the download and process of transmitting of video file, networking client can also the speed of download of display video file and the progress of transmission in real time, and whether automatically prompting user has been downloaded.
Fig. 8 is the example structure block diagram of the application's gateway device.As shown in the figure, the gateway device 10 of the present embodiment comprises: cyclic memory (not shown), for store video files; Receiving calling module 101, for receiving the download request of the video file of networking client download network video monitoring front-end, and calling the playing back videos interface of Network Video Surveillance front end according to download request; Obtain sending module 102, obtain video file from Network Video Surveillance front end for performing and the video file got be stored in the video file obtaining step of the cyclic memory of gateway device, and performing while performing video file obtaining step and from cyclic memory, obtain video file and the video file video file got being sent to networking client exports step.
Specifically, in one embodiment, after reception calling module 101 receives the download request of the video file that networking client sends, the playing back videos interface of Network Video Surveillance front end is called according to described download request, that is, gateway device 10 and Network Video Surveillance front end is made to set up video file transfer passage, to obtain the video file corresponding to described download request from Network Video Surveillance front end; Meanwhile, gateway device 10 opens up a cyclic memory within it in advance in also depositing, for storing the video file got from Network Video Surveillance front end.
Continue, in one embodiment, gateway device 10 also comprises Path Setup module 103, sets up video file transfer passage for gateway device and networking client.Specifically, in one embodiment, when after the download request receiving the video file sent from networking client, gateway device 10 sets up video file transfer passage, the video file being stored in cyclic memory is sent to networking client by Path Setup module 103 and networking client.
It should be noted that, above-mentioned gateway device 10 is configured between networking client and Network Video Surveillance front end, for setting up video file transfer passage with networking client and Network Video Surveillance front end respectively, thus the video file being stored in Network Video Surveillance front end is enable to be sent to networking client by gateway device.
In addition, in one embodiment, after setting up video file transfer passage with networking client, the video file obtained from Network Video Surveillance front end to download in the cyclic memory that gateway device opens up in advance with maximal rate by gateway device 10, and send it to networking client with maximal rate, thus achieve the instantaneous transmission of video file simultaneously.It should be noted that maximal rate mentioned here refers to the maximum transfer speed that can reach based on factor video files such as gateway device configuration, the network bandwidths.
In one embodiment, obtain sending module 102 for video file is downloaded to cyclic memory, and whether detect cyclic memory full, if it is video file obtaining step is suspended the first preset time period, otherwise continue from Network Video Surveillance front end downloading video files, until video file has been downloaded.
Specifically, in one embodiment, first, obtaining sending module 102 will download to cyclic memory from the video file that Network Video Surveillance front end gets according to download request; Then, detect cyclic memory whether full, if it is acquisitions video file step is suspended the first preset time period, that is, after wait first preset time period, when detect cyclic memory less than time continue again acquisition video file; Otherwise continue from Network Video Surveillance front end downloading video files, until video file has been downloaded, that is, if cyclic memory less than, then represent in cyclic memory have enough memory spaces to store video file to be obtained, so continue to perform video file obtaining step.
It should be noted that, here be not very strict to the setting of the first preset time period, usual CPU can be each thread dispatch time, and the object suspending the first preset time period herein allows other thread (as sent thread) as early as possible the video file be stored in cyclic memory is sent to networking client exactly, that is, as long as detect that cyclic memory is full just video file obtaining step must be suspended a period of time, because there is no enough spaces to store the video file got in cyclic memory.
Continue, in one embodiment, obtain sending module 102 also for obtaining video file from cyclic memory, and whether detect cyclic memory be empty, if otherwise video file is sent to networking client, otherwise judge whether video download file is sent completely, if it is described in informing network client, video file is sent completely, otherwise after time-out second preset time period, from cyclic memory, obtain video file.
Specifically, in one embodiment, first, obtain sending module 102 and obtain video file from cyclic memory; Then, whether detect cyclic memory is empty, if otherwise still have video file to be sent in expression cyclic memory, so video file is sent to networking client, otherwise judge whether video download file is sent completely further, if it is informing network client video file is sent completely and terminates video file and exports step, otherwise after video file being exported step and suspending the second preset time period, whether be empty, until terminate to video file transfer step if again detecting cyclic memory.
It should be noted that the second preset time period here and the first preset time period as above similar, do not need to carry out strict setting, but determine according to the actual transmission situation of video file.In addition, it is also to be noted that, whether the application is by being empty to cyclic memory and whether whether file be sent completely and terminate to judge to video file transfer, but, judge that the method that video file transfer terminates has a lot, such as also compare by the size of the video file size of the video file be stored in cyclic memory and networking client received and judge whether video file transfer completes, therefore the embodiment of the application is not limited to above-mentioned determination methods.
Fig. 9 is the structural representation of the application's network video monitor and control system.As shown in the figure, the video monitoring system of the present embodiment comprises: network video monitoring platform 12, networking client 11, gateway device 10 as above and Network Video Surveillance front end 13; Wherein, networking client 11 can be one or more, and Network Video Surveillance front end 13 also can be one or more.
It should be noted that the method for downloading video of the application realizes by the combination of software and hardware, the acquisition sending module in the gateway device in the application performs corresponding computer program (thread 1 as the aforementioned and thread 2) by CPU and realizes.
In sum, the method for downloading video of the application, gateway device and video monitoring system can solve problem incompatible between the network video monitoring platform of different production firm and Network Video Surveillance front end, and while video file is downloaded to gateway device from Network Video Surveillance front end, in real time, rapidly the video file be stored in gateway device can be sent to networking client; In addition, can also in the download progress of the real-time display video file of networking client, and whether automatically prompting user completes download.
Although with reference to exemplary embodiment describing the application, should be appreciated that term used illustrates and exemplary and nonrestrictive term.Spirit or the essence of invention is not departed from because the application can specifically implement in a variety of forms, so be to be understood that, above-described embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.
Claims (11)
1. a method for downloading video, for video file being downloaded to network video monitor and control system from Network Video Surveillance front end by gateway device, described network video monitor and control system comprises: network video monitoring platform and networking client, said method comprising the steps of:
S1. described gateway device receives the download request that described networking client downloads the video file of described Network Video Surveillance front end, and calls the playing back videos interface of described Network Video Surveillance front end according to described download request;
S2. perform and obtain described video file from described Network Video Surveillance front end and the described video file got be stored in the video file obtaining step of the cyclic memory of described gateway device, and perform while performing described video file obtaining step and from described cyclic memory, obtain described video file and the video file described video file got being sent to described networking client exports step.
2. method for downloading video according to claim 1, wherein, performs described video file obtaining step and specifically comprises in described step S2:
S210. described video file is downloaded to described cyclic memory;
S212. whether fullly detect described cyclic memory, if it is continue step S214, otherwise go to step S216;
S214. described video file obtaining step is suspended the first preset time period;
S216. continue to download described video file from described Network Video Surveillance front end, until described video file has been downloaded.
3. method for downloading video according to claim 1 and 2, wherein, performs described video file output step and specifically comprises in described step S2:
S220. from described cyclic memory, described video file is obtained;
Whether be empty, if it is continue step S224, otherwise go to step S228 if S222. detecting described cyclic memory;
S224. judge whether described video download file is sent completely, and if it is described in informing network client, video file is sent completely, otherwise goes to step S226;
S226., after time-out second preset time period, described step S220 is returned;
S228. described video file is sent to described networking client.
4. method for downloading video according to claim 1, wherein, also comprises after described step S1, before described step S2:
S11. described gateway device and described networking client set up video file transfer passage.
5. method for downloading video according to claim 4, wherein, after described gateway device and described networking client set up described video file transfer passage, with maximal rate, the described video file obtained from described Network Video Surveillance front end is sent to described networking client.
6. a gateway device, for video file is downloaded to network video monitor and control system from Network Video Surveillance front end, described network video monitor and control system comprises: network video monitoring platform and networking client, and described gateway device comprises:
Cyclic memory, for storing described video file;
Receive calling module, download the download request of the video file of described Network Video Surveillance front end for receiving described networking client, and call the playing back videos interface of described Network Video Surveillance front end according to described download request;
Obtain sending module, obtain described video file from described Network Video Surveillance front end for performing and the described video file got be stored in the video file obtaining step of the cyclic memory of described gateway device, and performing while performing described video file obtaining step and from described cyclic memory, obtain described video file and the video file described video file got being sent to described networking client exports step.
7. gateway device according to claim 6, wherein, described acquisition sending module is used for described video file to download to described cyclic memory, and whether detect described cyclic memory full, if it is described video file obtaining step is suspended the first preset time period, otherwise continue to download described video file from described Network Video Surveillance front end, until described video file has been downloaded.
8. the gateway device according to claim 6 or 7, wherein, described acquisition sending module also for obtaining described video file from described cyclic memory, and whether detect described cyclic memory be empty, if otherwise described video file is sent to described networking client, otherwise judge whether described video download file is sent completely, if it is described in informing network client, video file is sent completely, otherwise after time-out second preset time period, from described cyclic memory, obtain described video file.
9. gateway device according to claim 6, also comprises:
Path Setup module, sets up video file transfer passage for described gateway device and described networking client.
10. gateway device according to claim 9, wherein, after described gateway device and described networking client set up described video file transfer passage, with maximal rate, the described video file obtained from described Network Video Surveillance front end is sent to described networking client.
11. 1 kinds of network video monitor and control systems, comprising: network video monitoring platform, networking client, gateway device according to any one of claim 6-10 and Network Video Surveillance front end.
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| CN104284141B (en) * | 2013-07-08 | 2018-11-02 | 株式会社日立制作所 | Video monitoring system |
| CN104717561B (en) * | 2015-04-05 | 2018-02-23 | 西安航空学院 | A kind of video downloading system |
| CN109379563B (en) * | 2018-10-30 | 2020-10-23 | 华南师范大学 | Method and system for monitoring video data storage management |
| CN109617971A (en) * | 2018-12-14 | 2019-04-12 | 浩云科技股份有限公司 | A kind of method and device for downloading breakpoint transmission |
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| CN101808233A (en) * | 2009-02-18 | 2010-08-18 | 杭州海康威视数字技术股份有限公司 | Universal system for realizing video monitoring of mobile phone and method thereof |
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