CN1589009A - Method and device for realizing real video frequency request under two-way network - Google Patents
Method and device for realizing real video frequency request under two-way network Download PDFInfo
- Publication number
- CN1589009A CN1589009A CN 200410052952 CN200410052952A CN1589009A CN 1589009 A CN1589009 A CN 1589009A CN 200410052952 CN200410052952 CN 200410052952 CN 200410052952 A CN200410052952 A CN 200410052952A CN 1589009 A CN1589009 A CN 1589009A
- Authority
- CN
- China
- Prior art keywords
- client computer
- video
- server
- control server
- frequency program
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
A method for realizing video selection by fully utilizing network resources in a two-way network structure includes: a control server responds the earliest request of clients for watching the same video content in multiclients and a video server having the said video content transfers the content to the clients which buffer store it and begin playing. The control server response the second request of clients applying for watching the same video content, the clients storing the said video content transfer the content to the clients, the control server responds the third application of clients for watching the same content and the clients storing such content transfer it to the clients so on so forth, the clients applying for watching the same video content are connected in terms of time.
Description
Technical field
The present invention relates to the system and method for video request program, particularly true video on-demand system and the method in bilateral network.
Technical background
At present, according to different functional requirements and application scenarios, mainly contain three kinds of video request programs (Video On Demand) system: NVOD, TVOD, IVOD.
NVOD (Near Video-On-Demand) can be called quasi-video request program.The mode of this program request is: a plurality of video flowings start to send same content between successively at regular intervals.Such as, 12 video flowings started one every ten minutes and send two hours same TV programme.If the user wants to see that this video frequency program may need to wait for, but the longlyest can not surpass ten minutes, they can select to watch apart from their certain nearest start time.A video flowing may be shared for many users in this manner.
TVOD (True Video-On-Demand) is called true video request program.Its real support is promptly promptly put.When the user filed a request, video server will transmit the required video content of user immediately.If there is another user to propose same demand, video server will be restarted the video flowing of a transmission identical content immediately for him.But, in case video flowing begins to play, will continuously play down, up to stopping or finishing.In this manner, each video flowing aims at certain user's service.
IVOD (Interactive Video-On-Demand) is called the interactive video program request.It not only can be supported promptly to put and promptly put, but also can allow the user that video flowing is carried out interactively control.At this moment the user can realize program time-out, play, refund, operation such as F.F. and search.
But in traditional video on-demand system, all data flow all obtain from video server.The size of considering a common video program just has hundreds of million, and a station server will provide service simultaneously to a hundreds of user, and this all has very high requirement to the server and the network bandwidth.And along with the increase of number of users, need a large amount of servers, very high outlet bandwidth can both normally be watched to guarantee each user, makes operation cost improve constantly.
In addition, we find that there are following three characteristics in the use in the user who subscribes to the video display service:
1. sudden
User's demand may arrive out of the blue, and can not expect, VOD system must be prepared at any time.
2. concurrency
The user may have demand simultaneously, as on every night or day off.A large number of users concentrates on some period proposition demands, causes the waste of ample resources at ordinary times, yet but can't satisfy user's concentrated program request in peak period.
3. homogeneity
According to 80/20 principle, 80% user is concerned about on the internet is 20% content, and what a large number of users wished to watch may be same film.According to traditional true video on-demand system,, server resource is had too many difficulties to cope with even each user watches is that same film also all will independently occupy a bandwidth of server.
Therefore, how program being passed to them according to terminal use's needs, and control the expense of server and network lowly as far as possible, is a very crucial problem.
Brief summary of the invention
At the problems referred to above, the present invention proposes a kind of novel true video on-demand system.User bandwidth is divided into two parts in bilateral network: download (descending) bandwidth and upload (up) bandwidth.Terminal use's upstream bandwidth does not use substantially for video request program, has caused great waste.The present invention has made full use of terminal use's redundancy bandwidth, greatly reduces the expense of video server.In this system, for the terminal use of the same content of program request, have only first user to obtain video program data from video server, other users obtain video program data from previous user.The required bandwidth of video server is directly proportional with the film number that provides, and irrelevant with number of users, the user increases load of server, and the service provider is spun off from the vicious circle of overlapping investment.
The Data transmission mode is different again mutually between the present invention simultaneously and the general multi-client, considers terminal use's limited bandwidth, can not support transmission much to flow.The present invention adopts man-to-man load mode, implements simple, efficient, reliable.Be convenient to monitoring, realize that easily service quality guarantees.
Each end user device comprises memory cell, for example a disk.This memory cell can store the video frequency program of watching, and the data video and audio content that leaves in this memory cell can be played out.When a user (a) will watch a video frequency program, he downloaded to the video/audio data in the memory cell, began simultaneously to play, and play while promptly download.If spent 5 minutes, had another one user (b) to wish to watch same video frequency program again.Deposited 5 minutes video frequency program in the memory cell of user's (a) end user device, user (a) just begins his downloaded contents to send to user (b), and user (b) is while also begun to download to play.And user (a) continues his download and watches, and he should imperceptiblely have next user in the data that obtain video frequency program from elsewhere, and the process of transmission is transparent to the user, and what do not influence the user normally watches video frequency program.If there is user (c) also to wish to watch same video frequency program again, he will obtain from user (b) so.The rest may be inferred, and the user of the same video frequency program of be hopeful to watch is together in series constitutes user's chain, and the part that last user has downloaded oneself sends a back user to.Make full use of the characteristic that bilateral network can be uploaded simultaneously and download, the bandwidth usage of free time is got up.After finishing and watch, the user, when the user watches other video frequency programs, stores new video/audio data with the deletion of the video data in the memory cell.
In order to realize that the said system video frequency program provides part must have following part: database server, programme information publisher server, Control Server, video server.Described in the system in a plurality of client computer each comprises as lower module: receiving element, memory cell, retransmission unit, control unit, broadcast unit.
Brief description of drawings
Fig. 1 shows the structure of a VOD system server end.
Fig. 2 shows the structure of end user device (client computer).
Fig. 3 has described the flow process of a subscriber access system.
Fig. 4 shows the process that a user withdraws from.
Fig. 5 has illustrated that video program data flows in the embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in detail.
In order to realize that the said system video frequency program provides part must have following part:
Database server, programme information publisher server, Control Server, video server
Relation between each server as shown in Figure 1.Each server capability is as follows:
1. database server
Database server has been preserved user profile, and the user uses information, and video program information etc. provide required data message for other servers.
2. programme information publisher server
The programme information publisher server offers the user with the video program information that system has, and makes the user can select own interested video frequency program.
3. Control Server
The access of Control Server leading subscriber, the user withdraws from maintenance with user's chain.Corresponding data record in inquiry and the modification database server.
4. video server
Deposit the data of video frequency program, send corresponding user to.The video frequency program that management is deposited.
System can have the increase of a plurality of video servers with the adaptive video program.Above-mentioned each server is the division of making from functional perspective, can be separate equipment, also can be integrated in one or several equipment.Perhaps above-mentioned each server can be the different software module of moving on computers.
Fig. 2 has showed the structure of client computer.Described in the system in a plurality of client computer each comprises as lower module:
1. receiving element: be used for from video server or other client computer receiving video programs.
2. memory cell: the video frequency program that is used for receiving from video server or other client computer temporarily stores.
3. retransmission unit: the video frequency program that is used for temporarily storing sends next client computer to.
4. control unit: be used for communicating by letter, user's request is sent to Control Server, receive the Control Server order, make corresponding adjustment with Control Server.
5. broadcast unit: the video program play that will be stored in the memory cell is come out, or outputting video signal.Allow that the user suspends, plays, refunds in the video frequency program section of having downloaded, operations such as F.F. and search.
All simultaneously server and client computer are connected with each other by bilateral network, can mutual communication.The access way of this bilateral network can be: optical fiber inserts, and coaxial line inserts, and the DSL mode inserts, broadband access waies such as wireless access.
Fig. 3 has described the flow process of a subscriber access system.When wishing to watch a video frequency program by subscriber terminal equipment, a user will take following steps:
1. client computer (a) sends the request of watching video frequency program A to Control Server, and the identity information of client computer (a).
2. whether the identity information of Control Server audit client computer (a) has the right to watch video frequency program A.
3. if client computer (a) haves no right to watch, the then session of Control Server end and client computer (a).
4. if client computer (a) has the right to watch, then whether the Control Server inquiry has other users to watch video frequency program A.
5. if there are not other users to watch, Control Server requires client computer (a) to obtain video frequency program from the video server that has video frequency program A.
6. if there have been other users to watch, Control Server requires client computer (a), and last is not uploaded to the client computer acquisition video frequency program A of other client computer from client's chain.
Fig. 4 shows the process that a user withdraws from.The method that Control Server control client computer withdraws from comprises:
1. client computer (b) sends the request of withdrawing to Control Server.
2. a back client computer of client computer (b) sends the request of reorientating transfer source to Control Server.
3. Control Server requires a back client computer of client computer (b) to obtain the further part of video frequency program from the previous client computer of client computer (b).If client computer (b) obtains video frequency program from video server, then a back client computer of client computer (b) obtains the further part of video frequency program from video server.
The method of the maintenance of Control Server control client chain, comprise: if transmission fault takes place client computer (c), Control Server is removed client computer (c) from client's chain, continue to transmit video frequency program by the last client computer of client computer (c) to a back client computer of client computer (c).If client computer (c) obtains video frequency program from video server, then a back client computer of client computer (c) obtains the further part of video frequency program from video server.
Fig. 5 has illustrated that program data flows in the embodiment of the invention.All users that watch same film have constituted user's chain according to the priority of submitting request time to, and the user who is applied for backward by the user of first to file transmits the data of video frequency program.
If VOD system has 1000 video frequency programs, these video frequency programs are the videos with DVD image quality that compress with the MPEG-4 mode, the mean bit rate of each video frequency program is 1.5Mbps, consider other expenses of communication, server is generally to be higher than the speed rates video frequency program of video frequency program bit rate, as 2Mbps.Then the required total bandwidth of video server is 2Gbps.If each video server inserts bilateral network with 100M, consider that actual speed rate does not reach 100Mbps, 30 station servers can be set, these films can be distributed in each video server, and average every video server is placed 33 video frequency programs.
All Clients all inserts bilateral network with 2Mbps (download capabilities)/2Mbps (upload ability), can arrive disk with the speed foradownloaded video data of 2Mbps, can be uploaded to other users with the speed of 2Mbps again.Simultaneously the user can play the video content of having downloaded, to the part of having downloaded can suspend, play, fall back, operation such as search.
Development along with technology, optical fiber becomes main flow as the bidirectional data network of trunk, and optical fiber inserts the developing direction that will become next step, and user bandwidth will increase greatly, since optical fiber what walk up and down is circuit independently, the ability of promptly uploading and downloading is symmetrical.Adopt the present invention can make full use of Internet resources.
If adopt better video compression mode then higher-quality Video service can be provided with bandwidth still less.
Under current technical merit and network environment, realize that said system is fully possible.The successful Application of system will greatly reduce the investment of server end, and the relation that video server resource requirement quantity is proportional to number of users is converted into the relation that is proportional to the video frequency program number.Idle Internet resources have been made full use of simultaneously.
Above the present invention is had been described in detail.It is apparent to those skilled in the art that the various modifications of the present invention being made according to spirit of the present invention and guiding theory are all in claims of the present invention scope required for protection.
Claims (10)
1. one kind makes full use of the method that Internet resources are realized video request program under the bilateral network structure, and being used under by the bilateral network structure video frequency program provides between equipment and a plurality of client devices video frequency program is provided, and it is characterized in that described method comprises:
(1) Control Server responds in a plurality of client computer application the earliest and watches the request of the client computer (a) of same video content (A), sends content to client computer (a) by the video server that has this video content (A).Client computer (a) is got off the video content buffer memory that receives, and begins to play.
(2) Control Server responds in a plurality of client computer second application and watches the request of the client computer (b) of same video content (A), sends content to client computer (b) by the client computer (a) of this video content (A) under the buffer memory.
(3) Control Server responds in a plurality of client computer the 3rd application and watches the request of the client computer (c) of same video content (A), sends content to client computer (c) by the client computer (b) of this video content (A) under the buffer memory.
(4) the rest may be inferred, watches the client computer of same video content to be together in series by request time hope, constitutes client's chain, to save the expense of video server, makes full use of the bandwidth of uploading of client-side free time simultaneously.
2. the method for claim 1, it is characterized in that also comprising: a certain client computer withdraws from when the centre, the notice Control Server, redistribute between client computer data transfer relationship and when the transmission line of a certain client computer breaks down, the Control Server client computer of in time fixing a breakdown guarantees the service quality of other client computer.
3. method as claimed in claim 1 or 2 is characterized in that: the access of Control Server control client computer, client computer withdraw from the maintenance of client's chain.
4. method as claimed in claim 1 or 2 is characterized in that: described bilateral network is meant the network that has download (descending) ability simultaneously and upload (up) ability.
5. the method for the access of Control Server control client computer as claimed in claim 3 comprises:
(1) client computer (a) sends the request of watching video frequency program A to Control Server, and the identity information of client computer (a).
(2) whether the identity information of Control Server audit client computer (a) has the right to watch video frequency program A.
(3) if client computer (a) haves no right to watch the then session of Control Server end and client computer (a).
(4) if client computer (a) has the right to watch, then whether the Control Server inquiry has other users to watch video frequency program A.
(5) if there are not other users to watch, Control Server requires client computer (a) to obtain video frequency program from the video server that has video frequency program A.
(6) if there have been other users to watch, Control Server requires client computer (a), and last is not uploaded to the client computer acquisition video frequency program A of other client computer from client's chain.
6. the method for the access of Control Server control client computer as claimed in claim 5, also comprise: if a plurality of client computer sends the request of watching same video frequency program to Control Server simultaneously, Control Server is sent these client computer into queuing system, one by one by the described method connecting system of claim 5.
7. the method that Control Server control client computer as claimed in claim 3 withdraws from comprises:
(1) client computer (b) sends the request of withdrawing to Control Server.
(2) a back client computer of client computer (b) sends the request of reorientating transfer source to Control Server.
(3) Control Server requires a back client computer of client computer (b) to obtain the further part of video frequency program from the previous client computer of client computer (b).If client computer (b) obtains video frequency program from video server, then a back client computer of client computer (b) obtains the further part of video frequency program from video server.
8. the method for the maintenance of Control Server control client chain as claimed in claim 3, comprise: if transmission fault takes place client computer (c), Control Server is removed client computer (c) from client's chain, continue to transmit video frequency program by the last client computer of client computer (c) to a back client computer of client computer (c).If client computer (c) obtains video frequency program from video server, then a back client computer of client computer (c) obtains the further part of video frequency program from video server.
9. the VOD system under the bilateral network structure comprises by the interconnected database server of bilateral network, programme information publisher server, Control Server, a plurality of video server and a plurality of client computer.It is characterized in that:
In described a plurality of client computer each comprises:
Receiving element: be used for from video server or other client computer receiving video programs.
Memory cell: the video frequency program that is used for receiving from video server or other client computer temporarily stores.
Retransmission unit: the video frequency program that is used for temporarily storing sends next client computer to.
Control unit: be used for communicating by letter, user's request is sent to Control Server, receive the Control Server order, make corresponding adjustment with Control Server.
Broadcast unit: the video program play that will be stored in the memory cell is come out, or outputting video signal.Allow that the user suspends, plays, refunds in the video frequency program section of having downloaded, operations such as F.F. and search.
Described video server comprises:
Transmitting element: first client computer that is used for video frequency program is sent to client's chain.
Administrative unit: be used for the interpolation of managing video program, deletion, classification, index.
Described Control Server comprises:
Access unit:, comprise the authentication function of client computer with the client computer connecting system.To the information that client computer is distributed last client computer or video server, this client computer begins to download from last client computer or video server.
Heavy allocation units:, rearrange the relation between each client computer when client computer withdraws from or client's chain when making a mistake.
Described database server comprises:
Database server has been preserved user profile, and the user uses information, and video program information etc. provide required data message for other servers.
Described programme information publisher server comprises:
The programme information publisher server offers the user with the video program information that system has, and makes the user can select own interested video frequency program.
10. VOD system as claimed in claim 9 is characterized in that: described each server is the division of making from functional perspective, can be separate equipment, also can be integrated in one or several equipment.Perhaps above-mentioned each server can be the different software module of moving on computers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052952 CN1589009A (en) | 2004-07-19 | 2004-07-19 | Method and device for realizing real video frequency request under two-way network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052952 CN1589009A (en) | 2004-07-19 | 2004-07-19 | Method and device for realizing real video frequency request under two-way network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1589009A true CN1589009A (en) | 2005-03-02 |
Family
ID=34602672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410052952 Pending CN1589009A (en) | 2004-07-19 | 2004-07-19 | Method and device for realizing real video frequency request under two-way network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1589009A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740130A (en) * | 2006-12-20 | 2012-10-17 | 联合视频制品公司 | Systems and methods for providing remote access to interactive media guidance applications |
| CN107580243A (en) * | 2017-09-28 | 2018-01-12 | 长沙曙通信息科技有限公司 | A kind of demand stream media system comprehensive transmission implementation method |
| CN109862436A (en) * | 2019-04-01 | 2019-06-07 | 广州盛识信息技术有限公司 | A kind of streaming media signal diostribution device and streaming media signal quality determining method |
-
2004
- 2004-07-19 CN CN 200410052952 patent/CN1589009A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740130A (en) * | 2006-12-20 | 2012-10-17 | 联合视频制品公司 | Systems and methods for providing remote access to interactive media guidance applications |
| CN102740130B (en) * | 2006-12-20 | 2016-08-03 | 乐威指南公司 | Remote access system and method to interactive media guidance application is provided |
| CN107580243A (en) * | 2017-09-28 | 2018-01-12 | 长沙曙通信息科技有限公司 | A kind of demand stream media system comprehensive transmission implementation method |
| CN109862436A (en) * | 2019-04-01 | 2019-06-07 | 广州盛识信息技术有限公司 | A kind of streaming media signal diostribution device and streaming media signal quality determining method |
| CN109862436B (en) * | 2019-04-01 | 2023-05-09 | 广州盛识信息技术有限公司 | Streaming media signal distribution device and streaming media signal quality detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9462339B2 (en) | Systems and methods for distributing video on demand | |
| US9705951B2 (en) | Method and apparatus for instant playback of a movie | |
| CN1217543C (en) | Apparatus and method for equivalent VOD system | |
| CA2618328C (en) | A multi-source and resilient video on demand streaming system for a peer-to-peer subscriber community | |
| US8554941B2 (en) | Systems and methods for distributing video on demand | |
| CN1238800C (en) | Internet convolution audio/video server | |
| US7831989B1 (en) | Intelligent asset management in a cable services system | |
| CN1956539A (en) | Access/edge node supporting multiple video streaming services using a single request protocol | |
| WO1994001964A1 (en) | Media server for supplying video and multi-media data over the public telephone switched network | |
| CN1586081A (en) | Streamed content delivery | |
| CN1926867A (en) | System and method providing enhanced features for streaming video-on-demand | |
| US9294731B2 (en) | Dynamic VOD channel allocation based on viewer demand | |
| CN1819559A (en) | Multicast distribution of streaming multimedia content | |
| CN1620656A (en) | Quality of service control of streamed content delivery | |
| CN111263229B (en) | Video distribution method and device and electronic equipment | |
| US8275746B2 (en) | Video and multimedia distribution system | |
| US20150135213A1 (en) | Analyzing internet protocol television data to support peer-assisted video-on-demand content delivery | |
| CN1404670A (en) | Relaying system for broadcasting multi-channel internet television and networking method thereof | |
| US20020159464A1 (en) | Method of and system for providing parallel media gateway | |
| Almeroth et al. | An alternative paradigm for scalable on-demand applications: Evaluating and deploying the interactive multimedia jukebox | |
| CN1589009A (en) | Method and device for realizing real video frequency request under two-way network | |
| Wu et al. | Scheduled video delivery for scalable on-demand service | |
| CN102036104A (en) | Video on demand access control method | |
| CN101056251A (en) | A time shift service system and method | |
| Kwon et al. | Data placement for continuous media in multimedia DBMS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |