CN102802043B - Distributed monitoring system and video on demand method and device - Google Patents
Distributed monitoring system and video on demand method and device Download PDFInfo
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Abstract
The invention provides a distributed monitoring system and a video on demand method and device. The video on demand method comprises the steps of: after receiving a video on demand command of a user, determining a data transmission optical link between the user and a client end according to the video on demand command and a link selection rule, and sending the video data to the client end through the data transmission optical link, therefore, transmission links are dynamically distributed, and therefore, even if some link load is heavy, the failure of video on demand can be avoided.
Description
Technical field
The present invention relates to field of video monitoring, relate in particular to distributed monitoring system and VOD method thereof and device.
Background technology
The monitor video collecting in distributed monitoring system, conventionally be also distributed storage, in the time that the monitor video that needs program request collection is watched, any service node is in the time receiving program request instruction, if the monitor video of user's program request is not stored in current service node, program request instruction is forwarded by other service node, the service node at described monitor video place receives after program request instruction, adopts fixing data link that monitor video is sent to client.Described data link can be the link between service node and the client at monitor video place, the service node that can be also monitor video place forwards the data link forming by other service node, no matter be which kind of situation, described data link is all fixed, in the time that data link load is heavier or break down, be easy to cause the failure of video request program.
Summary of the invention
In view of this, the invention provides a kind of distributed monitoring system and VOD method thereof and device, object is to solve the problem of the easy program request failure of existing distributed monitoring system VOD method.
To achieve these goals, the embodiment of the present invention provides following technical scheme:
The VOD method of distributed monitoring system, is characterized in that, comprising:
Receive user's program request instruction;
In the time that described program request instruction meets first condition, according to link selection rule, determine the transfer of data optimum link between client;
By the video data of indicating in described program request instruction, by described transfer of data optimum link, send to described client.
Preferably, described link selection rule comprises:
Taking and described client between the lightest link of load as optimum link; Or,
Taking the nearest link of the described client of distance as optimum link.
Preferably, described first condition comprises:
The video data of indicating in described program request instruction is local video data.
Preferably, also comprise:
In the time that described program request instruction does not meet described first condition, forward described program request instruction.
Preferably, the described program request instruction of described forwarding comprises:
According to service node selective rule, determine the optimal service node that program request instruction forwards;
The optimal service node forwarding by described program request instruction, is forwarded to object service node by described program request instruction.
Preferably, described service node selective rule comprises:
Taking the lightest service node of load as optimal service node.
Preferably, described by the video data of indicating in described program request instruction, by described transfer of data optimum link, the concrete mode that sends to described client comprises:
Streaming Media mode.
The video on demand device of distributed monitoring system, comprising:
Receiver module, for receiving user's program request instruction;
Transfer of data optimum link determination module, in the time that described program request instruction meets first condition, according to link selection rule, determines the transfer of data optimum link between client;
Sending module, for the video data that described program request instruction is indicated, by described transfer of data optimum link, sends to described client.
Preferably, described transfer of data optimum link determining unit comprises:
Computing unit, for calculating the load of the link between described client; Or, for calculating the distance of the link between described client;
Determining unit, for determining that described least-loaded or the shortest link of distance are transfer of data optimum link.
Preferably, also comprise:
Forwarding module, in the time that described program request instruction does not meet described first condition, forwards described program request instruction.
Preferably, described forwarding module comprises:
Optimal service node determination unit, for according to service node selective rule, determines the optimal service node that program request instruction forwards;
Retransmission unit, for the optimal service node forwarding by described program request instruction, is forwarded to object service node by described program request instruction.
Preferably, described optimal service node determination unit comprises:
Computation subunit, for the load of calculation services node;
Determine subelement, for determining that the lightest service node of load is optimal service node.
A kind of distributed monitoring system, comprising:
Service node, for receiving user's program request instruction, in the time that described program request instruction meets first condition, according to link selection rule, determine the transfer of data optimum link between client, and by the video data of indicating in described program request instruction, by described transfer of data optimum link, send to described client.
Distributed monitoring system provided by the invention and VOD method thereof and device, after the program request instruction that receives user, can be according to described program request instruction and link selection rule, determine the transfer of data optimum link between client, and by described transfer of data optimum link, video data transmitting is delivered to client, thereby realize dynamic assignment transmission link, therefore,, even when certain link load is overweight, also can avoid the failure of video request program.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart of the VOD method of the disclosed a kind of distributed monitoring system of the embodiment of the present invention;
Fig. 2 is the flow chart of the VOD method of disclosed another distributed monitoring system of the embodiment of the present invention;
Fig. 3 is the flow chart of the VOD method of disclosed another distributed monitoring system of the embodiment of the present invention;
Fig. 4 is the flow chart of the VOD method of disclosed another distributed monitoring system of the embodiment of the present invention;
Fig. 5 is the structural representation of the disclosed a kind of distributed monitoring system video on demand device of the embodiment of the present invention;
Fig. 6 is the structural representation of disclosed another the distributed monitoring system video on demand device of the embodiment of the present invention;
Fig. 7 is the structural representation of disclosed another the distributed monitoring system video on demand device of the embodiment of the present invention.
Embodiment
The invention discloses a kind of VOD method of distributed monitoring system and device, distributed monitoring system, object is to solve easily failed problem of video request program in distributed monitoring system, its core inventive point is, each service node in distributed monitoring system can both be according to program request instruction and the first condition setting in advance and link selection rule, select the optimal transmission paths of video data and forwarding instruction, thereby ensure that video data can be transferred to client.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The VOD method of the disclosed a kind of distributed monitoring system of the embodiment of the present invention, wherein, the storage of the monitor video in distributed monitoring system is also distributed conventionally, be that monitor video is stored in different service nodes, as shown in Figure 1, described method is applied to any one service node in described distributed monitoring system, and described method comprises:
S101: receive user's program request instruction;
User's program request instruction refers to that user carries out the instruction of program request to monitor video in distributed monitoring system.
S102: in the time that described program request instruction meets first condition, according to link selection rule, determine the transfer of data optimum link between client;
Wherein, first condition and link selection rule all can be set in advance by user, transfer of data optimum link between service node and user refers to, for send the data link of monitor video from current service node to client, and the quality of described data link is optimum, specifically can show, the load of described data link is the lightest, or described data link is that current service node is to the shortest data link of client distance.
S103: by the video data of indicating in described program request instruction, by described transfer of data optimum link, send to described client.
VOD method in distributed monitoring system described in the present embodiment, the service node that receives program request instruction can be according to first condition and link selection rule, select self to send the most the link of video data to the optimum link between client, realize the dynamic assignment to data link, thereby can ensure video data to be sent to transmitting terminal.
The VOD method of disclosed another distributed monitoring system of the embodiment of the present invention, is applied to any service node in described distributed monitoring system, and as shown in Figure 2, described method comprises:
S201: receive user's program request instruction;
S202: judge whether the video data of indicating in described program request instruction is local video data, if so, carry out S203, if not, carry out S205;
S203: according to link selection rule, determine the transfer of data optimum link between current service node and client;
Wherein, in the present embodiment, link selection rule comprises: taking and described client between the lightest link of load as optimum link, or, taking the nearest link of the described client of distance as optimum link.The first road selective rule is with the light or the most nearest link optimum link the most of load, object is the transmission of the fast and stable that ensures video data, can avoid the video request program failure causing because link load is overweight, or, can avoid the excessive problem of program request time delay causing because link is long.
S204: by the video data of indicating in described program request instruction, by described transfer of data optimum link, in Streaming Media mode, send to described client;
Wherein, send in Streaming Media mode, can realize transmission limit, limit and play, and needn't wait until after whole video file sends and play again, reduced the time delay of video request program.
S205: forward described program request instruction;
Be not stored in current service node if judge the video data of program request in program request instruction, will forward program request instruction to other service node, so that the service node that finds video data to deposit.
The VOD method of the distributed monitoring system described in the embodiment of the present invention, when a service node in distributed monitoring system receives after video request program instruction, if the video of video request program instruction program request is local video data, determine its optimum transmission link, be transferred to client, if long-distance video data, be not stored in current service node, program request instruction is forwarded, the end-of-job of current service node, thus can avoid the failure of video request program.
The VOD method of disclosed another distributed monitoring system of the embodiment of the present invention, is applied to any service node in described distributed monitoring system, and as shown in Figure 3, described method comprises:
S301: receive user's program request instruction;
S302: judge whether the video data of indicating in described program request instruction is local video data, if so, carry out S303, if not, carry out S305;
S303: according to link selection rule, determine the transfer of data optimum link between current service node and client;
Described link selection rule, with identical described in above-described embodiment, repeats no more here.
S304: by the video data of indicating in described program request instruction, by described transfer of data optimum link, in Streaming Media mode, send to described client;
S305: according to service node selective rule, determine the optimal service node that program request instruction forwards;
S306: the optimal service node forwarding by described program request instruction, is forwarded to object service node by described program request instruction.
It should be noted that, when the video of program request instruction program request is not during at current service node, current service node need to forward described program request instruction, in the time forwarding, can directly program request instruction be transmitted to the service node at order video data place, in the present embodiment, can be designated as object service node, in the time that current service node and object service node distant maybe cannot be set up data and be connected, the mode that can forward by other service node, program request instruction is forwarded to object service node, in this case, in the present embodiment, service node selective rule can comprise: taking the lightest service node of load as optimal service node., current service node is forwarded to object service node by optimal service node by program request instruction.
It is emphasized that, in the present embodiment, when current service node carries out the forwarding of program request instruction to object service node, set up the instruction conversion link to object service node by current service node, in the time that object service node sends video data, can use instruction conversion link that video data is forwarded to current service node, determine that with said method optimum link sends it to client by current service node again, also can by object service node with said method determine with client between optimal data send link video data transmitting is delivered to client.
The VOD method of the distributed monitoring system described in the present embodiment, expound current service node process that program request instruction is forwarded, the forwarding of program request instruction also can be found optimum service node and carries out, thereby can optimize the data processing speed of distributed monitoring system.
The VOD method of another distributed monitoring system disclosed by the invention, is applied in two service nodes or multiple service node of distributed monitoring system, and as shown in Figure 4, described method comprises:
S401: first service node receives user's program request instruction;
S402: first service node judges whether the video data of indicating in described program request instruction is local video data, if so, carries out S403, if not, carries out S405;
S403: first service node, according to link selection rule, is determined the transfer of data optimum link between first service node and client;
S404: first service node, by the video data of indicating in described program request instruction, by described transfer of data optimum link, in Streaming Media mode, sends to described client;
S405: first service node, according to service node selective rule, is determined the optimal service node that program request instruction forwards;
S406: the optimal service node that first service node forwards by described program request instruction, is forwarded to object service node by described program request instruction, i.e. second service node.
S407: second service node, according to link selection rule, is determined the transfer of data optimum link between current service node and client;
In the present embodiment, link selection rule is same with the above-mentioned embodiment, repeats no more here.
S408: second service node, by the video data of indicating in described program request instruction, by described transfer of data optimum link, in Streaming Media mode, sends to described client.
The VOD method of the distributed monitoring system described in the present embodiment, first service node and second service all have the ability of selecting transfer of data optimum link, thereby can ensure that food data sends to client.
Further, the method described in above-described embodiment, all can also comprise:
According to user's priority, carry out the distribution of transmission path.
In the time having multiple users to carry out video request program, can, according to default user's priority, transfer of data optimal path be distributed to the user that priority is high and use simultaneously.
The disclosed a kind of distributed monitoring system video on demand device of the embodiment of the present invention, is applied to any service node in described distributed monitoring system, as shown in Figure 5, comprising:
Receiver module 501, for receiving user's program request instruction;
Transfer of data optimum link determination module 502, in the time that described program request instruction meets first condition, according to link selection rule, determines the transfer of data optimum link between client;
Sending module 503, for the video data that described program request instruction is indicated, by described transfer of data optimum link, sends to described client.
The course of work of installing described in the present embodiment is specially:
Receiver module receives after user's program request instruction, transfer of data optimum link determination module is according to first condition and link selection rule, determine the transfer of data optimum link between current service node and client, by described transfer of data optimum link, data are sent to client.
The video on demand device of disclosed another distributed monitoring system of the embodiment of the present invention, as shown in Figure 6, comprising:
Receiver module 601, for receiving user's program request instruction;
Computing unit 602, for calculating the load of the link between described client; Or, for calculating the distance of the link between described client;
Determining unit 603, for determining that described least-loaded or the shortest link of distance are transfer of data optimum link;
Sending module 604, for the video data that described program request instruction is indicated, by described transfer of data optimum link, sends to described client.
The video on demand device of disclosed another distributed monitoring system of the embodiment of the present invention, as shown in Figure 7, comprising:
Receiver module 701, for receiving user's program request instruction;
Transfer of data optimum link determination module 702, in the time that described program request instruction meets first condition, according to link selection rule, determines the transfer of data optimum link between client;
Sending module 703, for the video data that described program request instruction is indicated, by described transfer of data optimum link, sends to described client.
Forwarding module 704, in the time that described program request instruction does not meet described first condition, forwards described program request instruction.
Particularly, described forwarding module can comprise:
Optimal service node determination unit, for according to service node selective rule, determines the optimal service node that program request instruction forwards;
Retransmission unit, for the optimal service node forwarding by described program request instruction, is forwarded to object service node by described program request instruction.
More specifically, described optimal service node determination unit can comprise:
Computation subunit, for the load of calculation services node;
Determine subelement, for determining that the lightest service node of load is optimal service node.
In the present embodiment, described computing unit and computation subunit can integrated settings or independent setting, for example, carried out by same computing chip; Similarly, described determining unit and definite subelement also can integrated setting or independent settings.
The video on demand device of the distributed monitoring system described in the embodiment of the present invention, be arranged in any service node of described distributed monitoring system, make the service node of distributed monitoring system all possess the function of selecting optimal video data to send link, even if thereby ensure a service node or when a data transmission link breaks down or load is heavier, video data also can send to client.
The embodiment of the invention also discloses a kind of distributed monitoring system, comprising:
Service node, for receiving user's program request instruction, in the time that described program request instruction meets first condition, according to link selection rule, determine the transfer of data optimum link between client, and by the video data of indicating in described program request instruction, by described transfer of data optimum link, send to described client.
In distributed monitoring system described in the present embodiment, can comprise two or more above-mentioned service nodes, each service node has the function of selecting transfer of data optimum link, the workflow of a service node is as shown in Fig. 2 or 3, the course of work cooperatively interacting between two service nodes as shown in Figure 4, repeats no more here.
Distributed monitoring system described in the present embodiment, compared with existing distributed monitoring system, the transmission link of video data can carry out dynamic assignment, but not fixed link, in the time that a transmission link breaks down, can not affect the transmission of video data.
If the function described in the present embodiment method realizes and during as production marketing independently or use, can be stored in a computing equipment read/write memory medium using the form of SFU software functional unit.Based on such understanding, the part that the embodiment of the present invention contributes to prior art or the part of this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computing equipment, server, mobile computing device or the network equipment etc.) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment same or similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. the VOD method of distributed monitoring system, is characterized in that, comprising:
Receive user's program request instruction, wherein, user's program request instruction refers to that user carries out the instruction of program request to monitor video in distributed monitoring system;
In the time that described program request instruction meets first condition, according to link selection rule, determine the transfer of data optimum link between client, wherein, described first condition comprises: the video data of indicating in described program request instruction is local video data;
By the video data of indicating in described program request instruction, by described transfer of data optimum link, send to described client;
Wherein, described link selection rule comprises:
Taking and described client between the lightest link of load as optimum link; Or,
Taking the nearest link of the described client of distance as optimum link;
Wherein, also comprise:
In the time that described program request instruction does not meet described first condition, forward described program request instruction;
Wherein, the described program request instruction of described forwarding comprises:
According to service node selective rule, determine the optimal service node that program request instruction forwards;
The optimal service node forwarding by described program request instruction, is forwarded to object service node by described program request instruction.
2. method according to claim 1, is characterized in that, described service node selective rule comprises:
Taking the lightest service node of load as optimal service node.
3. method according to claim 1, is characterized in that, described by the video data of indicating in described program request instruction, and by described transfer of data optimum link, the concrete mode that sends to described client comprises:
Streaming Media mode.
4. a video on demand device for distributed monitoring system, is characterized in that, comprising:
Receiver module, for receiving user's program request instruction, wherein, user's program request instruction refers to that user carries out the instruction of program request to monitor video in distributed monitoring system;
Transfer of data optimum link determination module, for in the time that described program request instruction meets first condition, according to link selection rule, determine the transfer of data optimum link between client, wherein, described first condition comprises: the video data of indicating in described program request instruction is local video data;
Sending module, for the video data that described program request instruction is indicated, by described transfer of data optimum link, sends to described client;
Wherein, described transfer of data optimum link determining unit comprises:
Computing unit, for calculating the load of the link between described client; Or, for calculating the distance of the link between described client;
Determining unit, for determining that described least-loaded or the shortest link of distance are transfer of data optimum link;
Wherein, also comprise:
Forwarding module, in the time that described program request instruction does not meet described first condition, forwards described program request instruction;
Wherein, described forwarding module comprises:
Optimal service node determination unit, for according to service node selective rule, determines the optimal service node that program request instruction forwards;
Retransmission unit, for the optimal service node forwarding by described program request instruction, is forwarded to object service node by described program request instruction.
5. device according to claim 1, is characterized in that, described optimal service node determination unit comprises:
Computation subunit, for the load of calculation services node;
Determine subelement, for determining that the lightest service node of load is optimal service node.
6. a distributed monitoring system, is characterized in that, comprising:
Service node, for receiving user's program request instruction, wherein, user's program request instruction refers to that user carries out the instruction of program request to monitor video in distributed monitoring system; In the time that described program request instruction meets first condition, according to link selection rule, determine the transfer of data optimum link between client, wherein, described first condition comprises: the video data of indicating in described program request instruction is local video data; And by the video data of indicating in described program request instruction, by described transfer of data optimum link, send to described client;
Wherein, described link selection rule comprises: taking and described client between the lightest link of load as optimum link; Or, taking the nearest link of the described client of distance as optimum link;
Wherein, also comprise:
In the time that described program request instruction does not meet described first condition, described service node forwards described program request instruction;
Wherein, the described program request instruction of described forwarding comprises:
According to service node selective rule, determine the optimal service node that program request instruction forwards;
The optimal service node forwarding by described program request instruction, is forwarded to object service node by described program request instruction.
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| TWI552585B (en) * | 2015-02-26 | 2016-10-01 | 中華電信股份有限公司 | Multi-media signal service unit, service system and service method thereof |
| CN105208452A (en) * | 2015-09-24 | 2015-12-30 | 天脉聚源（北京）科技有限公司 | Interactive load configuration method and device for television interactive system |
| CN106331756A (en) * | 2016-09-05 | 2017-01-11 | 北京智能管家科技有限公司 | Routing selection device and method for video forwarding |
| CN106534220A (en) * | 2016-12-30 | 2017-03-22 | 北京奇虎科技有限公司 | Bidirectional transmission method and device of streaming data |
| CN109391614B (en) * | 2018-09-06 | 2021-09-07 | 视联动力信息技术股份有限公司 | Method and device for calling monitoring data based on video network |
| CN115348204B (en) * | 2022-07-20 | 2024-03-29 | 慧之安信息技术股份有限公司 | Real-time streaming media distribution network system |
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