CN102595209A - Cross-domain on-demand method in video monitoring system and video management server - Google Patents
Cross-domain on-demand method in video monitoring system and video management server Download PDFInfo
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Abstract
The invention discloses a cross-domain on-demand method in a video monitoring system, wherein the video monitoring system comprises more than two domains which are connected by a piece of cross-domain equipment. The method comprises the following steps that: when the video management server (VM) requires on-demand of playback data in a remote domain at a local domain video client (VC), judging whether a data management server (DM) in the local domain is provided with complete on-demand playback data or not; if the data management server (DM) in the local domain is provided with the complete on-demand playback data, notifying the VC to read the on-demand playback data from the DM in the local domain; otherwise, responding the on-demand request in a manner of cooperating with the VM in the remote domain, and copying the on-demand playback data responded by the remote VM into the DM in the local domain. The invention further discloses a VM. With the adoption of the cross-domain on-demand method and the VM disclosed by the invention, the cross-domain on demanding is realized by the smallest network resource consumption, and the data transmission and connection pressure caused to the DM at the other side also can be relieved.
Description
Technical field
The present invention relates to the video monitoring technology, particularly cross-domain on-demand method in the video monitoring system and video management server.
Background technology
The video monitoring technology has advantages such as authenticity, reliability, popularity, has therefore all obtained using widely in all trades and professions such as security protection, traffic, finance, education.The purpose of deployment supervisory control system is real-time monitoring, storage playback of data, and passes through videoconference client (VC) on-demand playback and alarm the playback of data when taking place, thereby is the evidence that provides strong that cracks of case.
Occurred large-scale video monitoring system at present, large-scale video monitoring system has two above guarded regions, and each guarded region connects through equipment between the territory, and each guarded region is all disposed a cover supervisory control system, is called the area monitoring system.Fig. 1 is for having the video monitoring system structural representation in two zones in the prior art, as shown in Figure 1, each area monitoring system all comprises camera, encoder (EC), VC, video management server (VM) and data management server (DM).When needs carry out cross-domain on-demand, the playback of data of the VC requesting area A of area B for example, concrete cross-domain on-demand method can comprise the steps:
1, the VM of the VC in the area B in area B sends order request, the playback of data among the request requesting area A; 2, the VM in the area B sends to the VM among the regional A with order request; 3, the VM among the regional A sends to the DM among the regional A with order request; 4, the address that obtains VC in the area B of the DM among the regional A directly sends to the VC in the area B with playback of data through equipment between the territory, thereby accomplishes cross-domain on-demand.
As can be seen from the figure, when carrying out cross-domain on-demand, need could be arrived the VC that proposes the cross-domain on-demand request through equipment between the territory, thereby take the bandwidth of equipment between the territory by the on-demand playback data.If the playback of data in another zone of many cross-domain on-demands of a plurality of VC in the same zone; Then each cross-domain on-demand all need read by order program data from the territory, opposite end through equipment between the territory; Bring than the macroreticular resource consumption to equipment between the territory; Increase the pressure of equipment between the territory, and also can cause extra data transmission and be connected pressure opposite end DM.
Summary of the invention
In view of this, the invention provides the cross-domain on-demand method in a kind of video monitoring, not only can realize cross-domain on-demand, but also can alleviate the data transmission that opposite end DM is caused and be connected pressure with the network resource consumption of minimum.
The present invention also provides a kind of video management server, not only can realize cross-domain on-demand with the network resource consumption of minimum, but also can alleviate the data transmission that opposite end DM is caused and be connected pressure.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
Cross-domain on-demand method in a kind of video monitoring system, said video monitoring system comprise the zone more than two that links to each other through equipment between the territory, and this method comprises:
During the playback of data of said video management server VM videoconference client VC request program request remote area in the one's respective area; Judge whether have among the data management server DM of one's respective area complete by the on-demand playback data; If have, notify said VC to read by the on-demand playback data from the DM of one's respective area; Otherwise, with the order request of the VM cooperative response VC of remote area, and being copied among the DM of one's respective area by the on-demand playback data far-end VM response.
The order request of the VM cooperative response VC of said and remote area, and comprise among the DM that is copied to the one's respective area by the on-demand playback data with far-end VM response:
If part is arranged by the on-demand playback data among the DM of one's respective area, and disappearance part is by the centre of on-demand playback data or rear end, and then VM notice VC reads among the DM of one's respective area existing by the on-demand playback data; Simultaneously, order request is transmitted to remote area, by the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, with being copied among the DM of one's respective area of disappearance part by the on-demand playback data;
If part is arranged among the DM of one's respective area by the on-demand playback data; And disappearance part is by the front end of on-demand playback data; Then VM is transmitted to remote area with order request earlier; By the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, with being copied among the DM of one's respective area of disappearance part by the on-demand playback data; It is existing by the on-demand playback data to notify VC to read among the DM of one's respective area simultaneously;
If not by the on-demand playback data, then order request is transmitted to remote area among the DM of one's respective area, by the VM of remote area with among the DM by the on-demand playback data through after equipment sends to VC between the territory, will be copied among the DM of one's respective area by the on-demand playback data.
Said will be copied among the DM of one's respective area by the on-demand playback data after, this method further comprises:
The VM of one's respective area generates record sheet, is used to preserve this by the playback channels title of on-demand playback data, by the zero-time of on-demand playback data, concluding time.
This method further comprises:
VM is the playback of data configuration ageing time of each time period, when one section playback of data of cross-domain storage by a sowing time, the ageing time of this playback of data of resetting; When the ageing time of one section playback of data of cross-domain storage arrives the ageing time that is provided with, delete this section playback of data.
A kind of video management server VM, in the video monitoring system that the zone forms more than two that is applied to link to each other through equipment between the territory, this VM comprises judging unit, first processing unit and second processing unit, wherein,
Said judging unit, when being used for the playback of data of in one's respective area videoconference client VC request program request remote area, judge whether have among the data management server DM of one's respective area complete by the on-demand playback data;
Said first processing unit is used for having completely during by the on-demand playback data as DM that judgment unit judges goes out the one's respective area, notifies said VC to read by the on-demand playback data from the DM of one's respective area;
Said second processing unit; Be used for not having complete during by the on-demand playback data as DM that judgment unit judges goes out the one's respective area; With the order request of the VM cooperative response VC of remote area, and being copied among the DM of one's respective area by the on-demand playback data far-end VM response.
Said second processing unit comprises that first handles subelement, the second processing subelement and the 3rd processing subelement, wherein,
Said first handles subelement, and being used for has part by the on-demand playback data as the DM of one's respective area, and the disappearance part notifies VC to read among the DM of one's respective area existing by the on-demand playback data by the centre of on-demand playback data or rear end the time; Simultaneously, order request is transmitted to remote area, by the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, with being copied among the DM of one's respective area of disappearance part by the on-demand playback data;
Said second handles subelement; Be used for part being arranged by the on-demand playback data as the DM of one's respective area; And the disappearance part is by the front end of on-demand playback data the time; Order request is transmitted to remote area, by the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, and will lack being copied among the DM of one's respective area partly by the on-demand playback data; It is existing by the on-demand playback data to notify VC to read among the DM of one's respective area simultaneously;
The said the 3rd handles subelement; When being used for DM when the one's respective area not by the on-demand playback data; Order request is transmitted to remote area, by the VM of remote area with among the DM by the on-demand playback data through after equipment sends to VC between the territory, will be copied among the DM of one's respective area by the on-demand playback data.
This VM also comprises the record sheet generation unit, is used for after being copied to the DM of one's respective area by the on-demand playback data, generates record sheet, to preserve this by the playback channels title of on-demand playback data, by the zero-time of on-demand playback data, concluding time.
This VM also comprises aging unit, is used to the playback of data configuration ageing time of each time period in the record sheet generation unit, when one section playback of data of cross-domain storage by a sowing time, the ageing time of this playback of data of resetting; When the ageing time of one section playback of data of cross-domain storage arrives the ageing time that is provided with, delete this section playback of data.
In sum; Cross-domain on-demand method in the video monitoring system that the present invention adopted and VM are through whether storing the cross-domain on-demand playback of data among the DM that judges the one's respective area, if having; Then directly from the DM of one's respective area, obtain this playback of data; And need not to obtain from remote area through equipment between the territory, the process of also just having avoided each cross-domain on-demand all need obtain from remote area through equipment between the territory, thus can realize cross-domain on-demand with the network resource consumption of minimum; Further,, need not to obtain, and then also just alleviated the data transmission that far-end DM is caused and be connected pressure through far-end DM for existing playback of data among the DM of one's respective area.
Description of drawings
Fig. 1 is for having the video monitoring system structural representation in two zones in the prior art;
Fig. 2 is the workflow diagram of cross-domain on-demand playback of data method of the present invention;
Fig. 3 is the structural representation of the VM that the present invention adopted.
Embodiment
In order to solve the technical problem that the present invention proposes, the concrete realization of scheme according to the invention comprises:
During the playback of data of VM VC request program request remote area in the one's respective area, whether in the DM of one's respective area have complete by on-demand playback data, if having, notify said VC to read by the on-demand playback data from the DM of one's respective area if judging; Otherwise, with the order request of the VM cooperative response VC of remote area, and being copied among the DM of one's respective area by the on-demand playback data far-end VM response.
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing and specific embodiment that the present invention is done to describe in detail further below.
Fig. 2 is the workflow diagram of cross-domain on-demand playback of data method of the present invention.This flow process is example with the playback of data of the VC request requesting area A of area B among Fig. 1, and as shown in Figure 2, this flow process may further comprise the steps:
Step 201: the VC of area B sends order request to the VM of one's respective area, the playback of data among the request requesting area A, and said order request comprises by the time period of program request and playback channels title.
Step 202: after the VM of area B receives order request, whether have among the DM of determinating area B complete by the on-demand playback data, if not by the on-demand playback data, execution in step 203; If part is arranged by the on-demand playback data, execution in step 204; If have complete by the on-demand playback data, execution in step 205.
Step 203: the VM in the area B is transmitted to regional A with order request, and the VM of regional A is with being sent to VC by the on-demand playback data through equipment between the territory among the DM; Simultaneously, process ends will be copied among the DM of area B by the on-demand playback data.
In this step; When being copied among the DM of area B by the on-demand playback data; Also need generate record sheet by the VM of area B; Be used to preserve this by the playback channels title of on-demand playback data, by the zero-time of on-demand playback data, concluding time, thus, when the VC in the one's respective area needs the cross-domain on-demand playback of data; If corresponding playback channels title, zero-time and the concluding time of playback of data of the program request wanted arranged in the VM record sheet of one's respective area, then can directly from the one's respective area, read cross-domain playback of data and get final product.The concrete form of preserving in the VM record sheet by the on-demand playback data can be referring to table 1.
Table 1
| Unit number | The playback channels title | Zero-time (t1) | Concluding time (t2) |
| 0001 | EC2004_206-0004 | 2010_6_4_8:45:15 | 2010_6_4_8:55:15 |
| 0002 | EC1001_303-0001 | 2010_5_20_8:55:15 | 2010_5_20_9:05:27 |
| 0003 | EC1001_303-0001 | 2010_5_20_9:05:28 | 2010_5_20_9:16:07 |
| 0004 | EC1001_304-0001 | 2010_3_1_6:12:03 | |
| 0005 | EC1001_303-0001 | 2010_5_20_9:16:08 | 2010_5_20_9:25:56 |
| 0006 | EC1001_304-0001 | 2010_3_1_6:15:21 | |
| ...... |
Need to prove; A large amount of long-time for fear of storage not by the cross-domain playback of data of program request; The playback of data that VM also is required to be cross-domain storage is provided with ageing time, when certain section playback of data of cross-domain storage by a sowing time, the ageing time of this playback of data of resetting such as zero clearing etc.; When the ageing time of certain section playback of data of cross-domain storage arrives the ageing time that is provided with, delete this section playback of data.
What also need explain is that deleting this section playback of data can also can be to stamp aging label for this section playback of data for directly deleting this section playback of data; And keep one preset period; If this section playback of data is by program request between retention period, the ageing time of then resetting is removed aging label; If retention time surpasses the longest preset duration that keeps, then directly delete this section playback of data.
Step 204: the VM among VM in the area B and the regional A responds the order request of VC respectively; Simultaneously, the VM among the regional A will lack the part copied to process ends among the DM of area B by the on-demand playback data.
Need to prove, if disappearance part by the centre of on-demand playback data or rear end, then the VM of area B notice VC reads among the DM of one's respective area existing by the on-demand playback data; Simultaneously, order request is transmitted to regional A, the VM of regional A is sent to VC by the on-demand playback data through equipment between the territory with the disappearance among the DM; Simultaneously, being copied among the DM of area B disappearance by the on-demand playback data;
If disappearance part is by the front end of on-demand playback data; Then the VM of area B is transmitted to regional A with order request earlier; The VM of zone A is sent to VC by the on-demand playback data through equipment between the territory with the disappearance among the DM, simultaneously, and with being copied among the DM of area B of disappearance by the on-demand playback data; Then, notice VC reads among the DM of one's respective area existing by the on-demand playback data.
Need to prove, in this step, order request is transmitted to regional A, with the process of the detailed process of VC that sent to through equipment between the territory by the on-demand playback data among the DM, repeat no more here with existing cross-domain on-demand playback of data by the VM of regional A.
Step 205: the VM of area B notice VC read among the DM of one's respective area by on-demand playback data, process ends.
Complete during when having among the DM of area B by the on-demand playback data; Then apply for resource to the DM of one's respective area by the VM in the area B; To obtain by the memory address of on-demand playback data; The memory address of obtaining is sent to VC, make VC from the DM of one's respective area, read, thereby accomplish cross-domain on-demand by the playback of data of program request according to memory address.
So far, promptly accomplished the whole workflow of the cross-domain on-demand playback of data that the present invention adopted.Through enumerating specific embodiment the method for cross-domain on-demand playback of data of the present invention is described below:
The data of first VC in area B 2010_6_1_0:0:0--2010_6_1_2:0:0 in VM request cross-domain on-demand playback channels EC1001_201-0001; VM query note table does not have the record item of same channels name in the table of discovery, then the VM among the VM notification area A carries out the cross-domain on-demand playback; Carry out local cache simultaneously; And in list item, add respective record, be recorded as unit number 0007, as shown in table 2 below:
Table 2
| Unit number | The playback channels title | Zero-time (t1) | Concluding time (t2) | The insertion time (t3) |
| 0001 | EC2004_206-0004 | 2010_6_4_8:45:15 | 2010_6_4_8:55:15 | |
| 0002 | EC1001_303-0001 | 2010_5_20_8:55:15 | 2010_5_20_9:05:27 | |
| 0003 | EC1001_303-0001 | 2010_5_20_9:05:28 | 2010_5_20_9:16:07 | |
| 0004 | EC1001_304-0001 | 2010_3_1_6:12:03 | 2010_3_1_6:15:21 | |
| 0005 | EC1001_303-0001 | 2010_5_20_9:16:08 | 2010_5_20_9:25:56 | |
| 0006 | EC1001_304-0001 | 2010_3_1_6:15:21 |
| 0007 | EC1001_201-0001 | ?2010_6_1_0:0:0 | ||
| ...... |
Next; The data of the 2010_6_1_1:0:0--2010_6_1_3:0:0 in VM request cross-domain on-demand playback channels EC1001_201-0001 of second VC in the area B; VM query note table, in the table of discovery 0007 have the same channels name the record item, then zero-time t1 and concluding time t2 in second VC request playback duration point t0=2010_6_1_1:0:0 and this record item are compared; Comparative result is that t1=2010_6_1_0:0:0 t1＜t0 t2 is sky in Unit 0007; Then being write the insertion time fences t3=t0=2010_6_1_1:0:0 of 0007 list item the t0 time, is the buffer unit (0008) that second VC distributes a free time simultaneously, and start time point is t0; Carry out cross-domain on-demand, the visible table 3 of the table among the VM:
Table 3
| Unit number | The playback channels title | Zero-time (t1) | Concluding time (t2) | The insertion time (t3) |
| ?0001 | ?EC2004_206-0004 | ?2010_6_4_8:45:15 | ?2010_6_4_8:55:15 | |
| ?0002 | ?EC1001_303-0001 | ?2010_5_20_8:55:15 | ?2010_5_20_9:05:27 | |
| ?0003 | ?EC1001_303-0001 | ?2010_5_20_9:05:28 | ?2010_5_20_9:16:07 | |
| ?0004 | ?EC1001_304-0001 | ?2010_3_1_6:12:03 | ?2010_3_1_6:15:21 | |
| ?0005 | ?EC1001_303-0001 | ?2010_5_20_9:16:08 | ?2010_5_20_9:25:56 | |
| ?0006 | ?EC1001_304-0001 | ?2010_3_1_6:15:21 | ||
| ?0007 | ?EC1001_201-0001 | ?2010_6_1_0:0:0 | ?2010_6_1_1:0:0 | |
| ?0008 | ?EC1001_201-0001 | ?2010_6_1_1:0:0 | ||
| ?...... |
When first VC is played back to 2010_6_1_1:0:0, be the insertion time point in 0007 list item, then stop the cross-domain on-demand playback; The concluding time of 0007 list item becomes the insertion time; First VC request playback duration point becomes t0 '=2010_6_1_1:0:0, and time term is inserted in deletion, and 0007 buffer unit clock begins counting; At this moment, the VM record sheet is as shown in table 4:
Table 4
First VC request playback duration point t0 ' inquiry VM record sheet, find with 0008 list item in t1 equate, then directly read buffer unit 0008 data and carry out playback, up to asking the concluding time to put 2010_6_1_2:0:0, no longer carry out cross-domain on-demand.
Second VC cross-domain on-demand playback finishes, and 0008 writes concluding time point 2010_6_1_3:0:0, and 0008 buffer unit clock begins counting, and the VM record sheet is as shown in table 5 below:
Table 5
Based on said method; Fig. 3 has provided the structural representation of the VM that the present invention adopted, and in the video monitoring system that the zone forms more than two that this VM is applied to link to each other through the territory equipment of asking, this VM comprises judging unit 31, first processing unit 32 and second processing unit 33; Wherein
Said judging unit 31, when being used for the playback of data of in one's respective area VC request program request remote area, judge whether have among the DM of one's respective area complete by the on-demand playback data;
Said first processing unit 32 is used for having completely during by the on-demand playback data as DM that judging unit 31 is judged the one's respective area, notifies said VC to read by the on-demand playback data from the DM of one's respective area;
Said second processing unit 33; Be used for not having complete during by the on-demand playback data as DM that judging unit 31 is judged the one's respective area; With the order request of the VM cooperative response VC of remote area, and being copied among the DM of one's respective area by the on-demand playback data far-end VM response.
Particularly, said second processing unit 33 comprises that first handles subelement 331, the second processing subelement 332 and the 3rd processing subelement 333, wherein,
Said first handles subelement 331, and being used for has part by the on-demand playback data as the DM of one's respective area, and the disappearance part notifies VC to read among the DM of one's respective area existing by the on-demand playback data by the centre of on-demand playback data or rear end the time; Simultaneously, order request is transmitted to remote area, by the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, with being copied among the DM of one's respective area of disappearance part by the on-demand playback data;
Said second handles subelement 332; Be used for part being arranged by the on-demand playback data as the DM of one's respective area; And the disappearance part is by the front end of on-demand playback data the time; Order request is transmitted to remote area, by the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, and will lack being copied among the DM of one's respective area partly by the on-demand playback data; It is existing by the on-demand playback data to notify VC to read among the DM of one's respective area simultaneously;
The said the 3rd handles subelement 333; When being used for DM when the one's respective area not by the on-demand playback data; Order request is transmitted to remote area; By the VM of remote area with among the DM by the on-demand playback data through after equipment sends to VC between the territory, will be copied among the DM of one's respective area by the on-demand playback data.
Further; This VM also comprises record sheet generation unit 34; Be used for after second processing unit 33 is copied to the DM of one's respective area by the on-demand playback data, generate record sheet, to preserve this by the playback channels title of on-demand playback data, by the zero-time of on-demand playback data, concluding time.
Further, this VM also can comprise aging unit 35, is used to the playback of data configuration ageing time of each time period in the record sheet generation unit 34, when one section playback of data of cross-domain storage by a sowing time, the ageing time of this playback of data of resetting; When the ageing time of one section playback of data of cross-domain storage arrives the ageing time that is provided with, delete this section playback of data.
So far, promptly obtained the VM that the present invention adopted.Same Fig. 2 of concrete realization flow of VM according to the invention repeats no more here.
In a word; Cross-domain on-demand method in the video monitoring system that the present invention adopted and VM are through whether storing the cross-domain on-demand playback of data among the DM that judges the one's respective area, if having; Then directly from the DM of one's respective area, obtain this playback of data; And need not to obtain from remote area through equipment between the territory, the process of also just having avoided each cross-domain on-demand all need obtain from remote area through equipment between the territory, thus can realize cross-domain on-demand with the network resource consumption of minimum; Further,, need not to obtain, and then also just alleviated the data transmission that far-end DM is caused and be connected pressure through far-end DM for existing playback of data among the DM of one's respective area.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (8)
1. the cross-domain on-demand method in the video monitoring system, said video monitoring system comprises the zone more than two that links to each other through equipment between the territory, it is characterized in that this method comprises:
During the playback of data of said video management server VM videoconference client VC request program request remote area in the one's respective area; Judge whether have among the data management server DM of one's respective area complete by the on-demand playback data; If have, notify said VC to read by the on-demand playback data from the DM of one's respective area; Otherwise, with the order request of the VM cooperative response VC of remote area, and being copied among the DM of one's respective area by the on-demand playback data far-end VM response.
2. method according to claim 1 is characterized in that, the order request of the VM cooperative response VC of said and remote area, and comprise among the DM that is copied to the one's respective area by the on-demand playback data with far-end VM response:
If part is arranged by the on-demand playback data among the DM of one's respective area, and disappearance part is by the centre of on-demand playback data or rear end, and then VM notice VC reads among the DM of one's respective area existing by the on-demand playback data; Simultaneously, order request is transmitted to remote area, by the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, with being copied among the DM of one's respective area of disappearance part by the on-demand playback data;
If part is arranged among the DM of one's respective area by the on-demand playback data; And disappearance part is by the front end of on-demand playback data; Then VM is transmitted to remote area with order request earlier; By the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, with being copied among the DM of one's respective area of disappearance part by the on-demand playback data; It is existing by the on-demand playback data to notify VC to read among the DM of one's respective area simultaneously;
If not by the on-demand playback data, then order request is transmitted to remote area among the DM of one's respective area, by the VM of remote area with among the DM by the on-demand playback data through after equipment sends to VC between the territory, will be copied among the DM of one's respective area by the on-demand playback data.
3. method according to claim 1 and 2 is characterized in that, said will be copied among the DM of one's respective area by the on-demand playback data after, this method further comprises:
The VM of one's respective area generates record sheet, is used to preserve this by the playback channels title of on-demand playback data, by the zero-time of on-demand playback data, concluding time.
4. method according to claim 3 is characterized in that, this method further comprises:
VM is the playback of data configuration ageing time of each time period, when one section playback of data of cross-domain storage by a sowing time, the ageing time of this playback of data of resetting; When the ageing time of one section playback of data of cross-domain storage arrives the ageing time that is provided with, delete this section playback of data.
5. a video management server VM is characterized in that this VM comprises judging unit, first processing unit and second processing unit in the video monitoring system that the zone forms more than two that is applied to link to each other through equipment between the territory, wherein,
Said judging unit, when being used for the playback of data of in one's respective area videoconference client VC request program request remote area, judge whether have among the data management server DM of one's respective area complete by the on-demand playback data;
Said first processing unit is used for having completely during by the on-demand playback data as DM that judgment unit judges goes out the one's respective area, notifies said VC to read by the on-demand playback data from the DM of one's respective area;
Said second processing unit; Be used for not having complete during by the on-demand playback data as DM that judgment unit judges goes out the one's respective area; With the order request of the VM cooperative response VC of remote area, and being copied among the DM of one's respective area by the on-demand playback data far-end VM response.
6. VM according to claim 5 is characterized in that, said second processing unit comprises that first handles subelement, the second processing subelement and the 3rd processing subelement, wherein,
Said first handles subelement, and being used for has part by the on-demand playback data as the DM of one's respective area, and the disappearance part notifies VC to read among the DM of one's respective area existing by the on-demand playback data by the centre of on-demand playback data or rear end the time; Simultaneously, order request is transmitted to remote area, by the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, with being copied among the DM of one's respective area of disappearance part by the on-demand playback data;
Said second handles subelement; Be used for part being arranged by the on-demand playback data as the DM of one's respective area; And the disappearance part is by the front end of on-demand playback data the time; Order request is transmitted to remote area, by the VM of remote area with the part of the disappearance among the DM by the on-demand playback data through after equipment sends to VC between the territory, and will lack being copied among the DM of one's respective area partly by the on-demand playback data; It is existing by the on-demand playback data to notify VC to read among the DM of one's respective area simultaneously;
The said the 3rd handles subelement; When being used for DM when the one's respective area not by the on-demand playback data; Order request is transmitted to remote area, by the VM of remote area with among the DM by the on-demand playback data through after equipment sends to VC between the territory, will be copied among the DM of one's respective area by the on-demand playback data.
7. according to claim 5 or 6 described VM; It is characterized in that; This VM also comprises the record sheet generation unit; Be used for after being copied to the DM of one's respective area, generate record sheet, to preserve this by the playback channels title of on-demand playback data, by the zero-time of on-demand playback data, concluding time by the on-demand playback data.
8. VM according to claim 7; It is characterized in that this VM also comprises aging unit, be used to the playback of data configuration ageing time of each time period in the record sheet generation unit; When one section playback of data of cross-domain storage by a sowing time, the ageing time of this playback of data of resetting; When the ageing time of one section playback of data of cross-domain storage arrives the ageing time that is provided with, delete this section playback of data.
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| CN104093088A (en) * | 2013-12-26 | 2014-10-08 | 赛特斯信息科技股份有限公司 | System and method for achieving self-adaptive stream media play control |
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| CN113382453A (en) * | 2021-08-12 | 2021-09-10 | 北京小鸟科技股份有限公司 | Cross-domain graph transmission method and system based on enhanced static routing calculation and source return |
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