CN101072324B - Multicast recording method, system, service control device and server - Google Patents

Abstract

A multicast recording method, the method comprising the steps of: recording a live program provided by a multicast source in real time by a recording on-demand server; a service control device receiving a program recording request, wherein the program recording request includes parameters for requesting to record the program, and the parameters include program recording The corresponding relationship between the request and the live program; the service control device judges whether the live program recorded in real time by the recording and on-demand server includes the program corresponding to the program recording request; and if it has been recorded, the service control device directly records the parameters in the program recording request. At the same time, a multicast recording system, service control device and server are provided. The embodiment of the present invention directly records the parameters in the program recording request, does not need to repeatedly record the program, saves network resources, and avoids the situation that the same program is repeatedly copied in the network. For the entire multicast network system, network storage resources The efficiency is improved, and the processing capability of the media network system is enhanced.

Description

Multicast recording method, system, service control device and server

technical field

The invention relates to network media processing technology, in particular to a multicast recording method, system, service control device and server.

Background technique

With the development of technology, more and more Internet Protocol Television or Interactive Personal Television (IPTV) and Digital Television (DTV) are coming to users. At the same time, with the appearance of the set-top box (Set-top Box, STB), the network personal video recording (Network Personal Video Recorder, NPVR) service can be realized.

The traditional NPVR service is to open up a storage space for each user on the recording and on-demand server. The user end initiates a video recording request, and then copies the requested video on the video playback server and transmits it to the video on the network side. on the recording server. When playing, a receiving device at the user end receives the user's video playing request, and according to the video playing request, plays the video content that has been recorded on the video recording server.

In the process of realizing the present invention, the inventor found that in the above-mentioned traditional NPVR service, at least the following problems exist: the video recording server needs a large number of storage devices to store a large amount of video recording content, resulting in too many storage resources on the network side, resulting in resource waste. For example: For a video file encoded according to the H.264 encoding method, if it is a standard definition picture, the video data per second is about 2Mb. When dumping, it needs to be stored together with the transport stream data. Therefore, for a video frame of 1 second, the headend needs to provide a capacity of 2M×(1+15%) bits. For a film or program with a length of 1 hour, the total storage capacity to be provided is (2.3Mbps*3600s)/8=1.03GB. In this way, when a movie is recorded by 10 users, the storage requirement on the server side is 1.03GB×10=10.3GB. If there are multiple types of such stored video files, the resource waste at the server end is large, and for the entire multicast recording network, the waste of network resources is very serious.

Contents of the invention

In view of this, it is necessary to provide a method for multicast recording to solve the problem of wasting network resources for multicast recording.

A multicast recording method, the method comprising the steps of:

The recording on-demand server records the live program provided by the multicast source in real time, and the recording method includes one-time sending and permanent recording;

The service control device receives a program recording request, wherein the program recording request includes parameters for requesting to record the program, and the parameters include the corresponding relationship between the program recording request and the live program;

The service control device determines whether the live program recorded by the recording and on-demand server in real time includes the program corresponding to the program recording request; and

If it has already been recorded, the service control device directly records the parameters in the program recording request.

A multicast recording method, the method comprising the steps of:

The service control device receives a program recording request, the program recording request includes parameters for requesting to record the program, and the parameters include the corresponding relationship between the program recording request and the live program;

The service control device determines whether other users have recorded the requested program included in the program recording request; and

If other users record the requested program included in the program recording request, the service control device directly records the parameters in the program recording request.

At the same time, a multicast recording system is provided, which includes:

Recording on-demand server, used to record the live program provided by the multicast source, the recording method includes one-time sending and permanent recording; and

The service control device is configured to receive and record a program recording request, wherein the program recording request includes parameters for requesting to record the program, and the parameters include a corresponding relationship between the program recording request and the live program.

At the same time, a service control device is provided, which includes:

The program operation receiving unit is used to record the live program provided by the multicast source in real time based on the recording and on-demand server, wherein the recording method includes sending a permanent recording once, receiving a program recording request, and the program recording request includes parameters for requesting to record the program, and the The parameters include the corresponding relationship between the program recording request and the live program; and

The storage unit is used to record the parameters in the program operation request.

Additionally, there is provided a server comprising:

The program list generation unit is used to generate the live program list; the program list delivery unit is used to provide the program list to the user; the operation relay unit is used to receive the program recording request, and the program recording request is based on the real-time recording group of the recording on-demand server The live program provided by the broadcast source, wherein the recording method includes sending permanent recording once, and the program recording request includes parameters for requesting to record the program, and the parameters include the corresponding relationship between the program recording request and the live program; and operation The request sending unit is used to forward the program recording request.

In the embodiment of the present invention, by directly recording the parameters in the program recording request, there is no need to repeatedly record the program, which saves network resources and avoids the situation that the same program is repeatedly copied in the network. For the entire multicast network system, the network The efficiency of storage resources is improved, so that the processing capability of the media network system is enhanced.

Description of drawings

FIG. 1 is a schematic structural diagram of a multicast recording system according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a multicast recording system according to Embodiment 2 of the present invention.

FIG. 3 is a schematic structural diagram of a multicast recording system according to Embodiment 3 of the present invention.

FIG. 4 is a schematic structural diagram of a multicast recording system according to Embodiment 4 of the present invention.

FIG. 5 is a schematic structural diagram of a multicast recording system according to Embodiment 5 of the present invention.

FIG. 6 is a schematic structural diagram of a multicast recording system according to Embodiment 6 of the present invention.

Fig. 7 is a structural block diagram of a service control device according to an embodiment of the present invention.

Fig. 8 is a structural block diagram of an EPG/WEB server according to an embodiment of the present invention.

FIG. 9 is a flowchart of a multicast recording method according to Embodiment 7 of the present invention.

FIG. 10 is a flow chart of the eighth multicast recording method according to Embodiment 8 of the present invention.

Detailed ways

Please refer to Fig. 1, the embodiment of the present invention provides multicast recording system 100, wherein: service control device 200, is used for receiving the program recording request from set-top box 106 forwarded by EPG (Electronic Program Guide, Electronic Program Guide)/WEB server 300 , and send a recording instruction to the recording and on-demand server 102 according to the request, and the recording and on-demand server 102 records the video program provided by the multicast source 104 according to the recording instruction.

The EPG/WEB server 300 is used to provide the set-top box 106 with a program list, including: a live program list and a recorded program list.

The video program recorded by the recording and on-demand server 102 may be recorded in real time, or may be recorded upon receiving an instruction from the service control device 200 .

The set-top box 106 can also be replaced with a personal computer (PC, Personal Computer), a notebook computer (NB, Notebook Computer), a personal digital assistant (PDA, Personal Digital Assistant), a mobile phone (HS, Handset) and an intelligent optical disk drive (IODD, Intelligent Optical Disk Drive ) and other terminal equipment, the set-top box STB is taken as an example in this embodiment.

Please refer to FIG. 2 , the program recording request may also be sent directly from the set-top box 106 to the service control device 200 . Please refer to FIG. 3 , the service control device 200 and the EPG/WEB server 300 can be implemented based on the same recording control subsystem 100 . Please refer to FIG. 4 , the service control device 200 , the EPG/WEB server 300 and the recording and on-demand server 102 can also be implemented based on the same multicast recording subsystem 112 . Please refer to FIG. 5, the service control device 200 and the recording and on-demand server 102 can also be implemented based on the same recording subsystem 114. Please refer to FIG. 6, the recording subsystem 114 in FIG. The live programs provided by the multicast source 104 include: video programs, audio programs or static multimedia programs, and video programs are taken as an example in this embodiment. The aforementioned EPG server may also be replaced by a WEB server, and an EPG/WEB server is taken as an example in this embodiment. The multicast recording system 100 can also process program browsing requests and program deletion requests. The above-mentioned program recording requests are taken as an example, and will not be described in detail below.

Please refer to FIG. 7 , the service control device 200 includes: a startup control unit 202 , an operation receiving unit 204 , a judgment unit 206 , an information prompt unit 230 , a detection module 210 , a deletion control module 220 , and a storage unit 234 .

Wherein, the start control unit 202 is used to send a start signal to the recording and on-demand server 102 to instruct it to start recording. The start control unit 202 can send the start signal according to the request of the set-top box 106, or can send the start signal in a timing manner.

The operation receiving unit 204 is used to receive a program recording request, including parameters for requesting to record a program, user identification, channel identification, program information, etc., wherein the parameters include a correspondence between a program recording request and a live program. There are two types of program recording requests: sending a permanent recording request once or sending a recording request according to the program list. Wherein, sending a permanent recording request once is: sending a recording request once, and the recording request is always valid until other instructions are received. The recording request sent according to the program list is: the recording request includes the parameters of the program to be recorded, including: user ID, the program to be recorded, the start and end time of recording, and program list information, etc., when the requested program has been recorded When done, stop recording.

The judging unit 206 is configured to judge whether the recording and on-demand server 102 has recorded the corresponding program according to the program recording request received by the operation receiving unit 204 .

The information prompt unit 230 is configured to send prompt information to the set-top box 106, including: recording success information, unauthorized browsing information or unauthorized deletion information, and the like.

The storage unit 234 is used to record the program recording request, wherein the program list information in the program recording request can also be stored in the EPG/WEB server 300 .

The detection module 210 is used to detect whether the program browsing request and the program deletion request meet the request requirements, and includes: a permission detection unit 212 , a program recording detection unit 214 and a user recording detection unit 216 . Wherein, the authority detection unit 212 is used to detect whether the user has the authority to browse or delete. The program recording detection unit 214 is used to detect whether the user has recorded the media information requested for operation. The user recording detection unit 216 is configured to detect whether other users have recorded the program corresponding to the current program operation request.

The deletion control module 220 is used to control the deletion operation according to the user's program deletion request. The deletion control module 220 includes: a program deletion control unit 222, configured to control deletion of recorded programs. The record deletion control unit 224 is configured to control the deletion of the program operation requests recorded in the storage unit 234 . And a program list deletion control unit 226, configured to control the user to request deletion of the program list of the recorded program.

Please refer to FIG. 8 , the EPG/WEB server 300 includes: a playbill generation unit 302 , a playbill delivery unit 304 , a playbill list acquisition unit 306 , an operation relay unit 308 and an operation request sending unit 310 .

The program list generating unit 302 is configured to generate a live program list, and the live program list involves all programs broadcast live by the multicast source 104 .

The program list acquiring unit 306 is used to acquire the program list that the user has recorded.

The program list delivery unit 304 is configured to provide the user with a live program list, or provide the recorded program list acquired by the program list acquisition unit 306 .

The operation relay unit 308 is used for receiving a user's program operation request.

The operation request sending unit 310 is configured to send the program operation request received by the operation relay unit 308 to the operation receiving unit 204 .

In the embodiment of the present invention, the parameters in the program recording request are directly recorded by the service control device 200, which does not need to repeatedly record the program, saves network resources, and avoids the situation that the same program is repeatedly copied in the network. For the entire multicast network system , the efficiency of network storage resources is improved, and the processing capability of the media network system is enhanced. By controlling the startup of the recording and VOD server 300 by the startup control unit 202, the situation of wasting human resources caused by artificially controlling the startup of the server is avoided. The authority detection unit 212 detects the authority requested by the user to operate the media file to prevent the user from deleting recording information of other users. Whether the media file has been recorded is detected by the recording detection unit 214, which prevents frequent operations on the recording and on-demand server 102 from causing shortage of server resources, and improves operating efficiency. The user recording detection unit 216 detects whether other users record the program currently requested to be operated, which reduces the waste of storage space of the recording VOD server 102 and improves storage efficiency. The prompt information is sent to the user through the prompt unit 230, so that the user can clearly understand the status and reason of the current request.

The above-mentioned EPG/WEB server 300 receives the user's program operation request by operating the relay unit 308, and the operation request sending unit 310 forwards the program operation request, so that the user can send the request to the service control device 200 without additional connection lines, saving network Wiring, and can realize the interaction between the service control device 200 and the user.

Please refer to Fig. 9, a preferred embodiment of the present invention multicast recording method includes the following steps:

Step 402 , the service control device 200 sends a recording start signal to the recording and on-demand server 102 . Sending the recording start signal can be sent by the start control unit 202, or can be started in a timing manner, and this step can be omitted for the recording VOD server 102 for real-time recording. During the recording process, the recording service control device 200 needs to be able to send a recording start command to the recording on-demand server, and the sent command needs to include the channel multicast IP address and multicast port number of the recorded program. Commands can be sent in two ways:

1) Send once to start forever. When the recording service control system starts the recording service, it sends to the recording/on-demand server once, and the recording/on-demand server always records the multicast video data according to the instruction before receiving other instructions.

2) Send according to the program list. When the recording service control device 200 starts the recording service, it sends the channel multicast IP address and port number of the recorded program to the recording/demand server, and also sends the recorded program information (start and end time of the program) at the same time. After the recording is completed, the recording/on-demand server automatically stops recording and waits for the next recording instruction.

The service control device 200 needs to be able to record the user's recording request, but it is only stored as the data of the system, and has nothing to do with the actual recording instruction sent to the recording/on-demand system. In this way, two conditions are required for a user's recording request to be successfully satisfied: the actual video data of the program exists in the recording/on-demand subsystem; and the data requested by the user exists in the service control device 200 .

In step 404, the recording on-demand server 102 records the live program provided by the multicast source 104 in real time. In this step, multiple files can be created according to the program directory, or the program can be recorded by recording program offset information after recording a program, or a combination of the above two methods can be used. In this embodiment, the live program is recorded in real time, and the recording starts without the user's request. In this way, when the user requests, only the user's request is recorded to avoid repeated recording.

In step 406, the EPG/WEB server 300 generates a live program list. There is a one-to-one correspondence between the live program list and the live programs provided by the multicast source 104 . The program recording request can be based on the live program list to request recording.

Step 408 , the EPG/WEB server 300 sends the live program list to the STB 106 . Sending the live program list can be completed by the program list sending unit 304 . Apparently, the above steps 406 and 408 and steps 402 and 404 may not be sequenced, and steps 406 and 408 may be performed first and then steps 402 and 404 may be performed.

In step 410, the EPG/WEB server 300 receives a program recording request from a user. The program recording request includes parameters for requesting to record the program, and the parameters include the corresponding relationship between the program recording request and the live program. The program recording request is based on the request for recording of the above-mentioned live program list. In this embodiment, taking the EPG/WEB server 300 receiving and forwarding user requests as an example, the user may also directly send the program recording request to the service control device 200 without going through the EPG/WEB server 300 . The following will not repeat them.

In step 412, the EPG/WEB server 300 forwards the program recording request.

Step 414, the service control device 200 receives the forwarded program recording request.

In step 416, the service control device 200 determines whether the recording and on-demand server 102 has recorded the program corresponding to the program recording request and whether the recorded program is complete. The judgment can be made in a request manner, or it can be judged at a fixed time. When the program ends, the judgment step is executed. If the program has been completely recorded, go to step 420; otherwise, go to step 418.

In step 418, the service control device 200 sends a prompt message of recording failure to the set-top box 106. After this step is executed, this process ends.

In step 420, the service control device 200 directly records the parameters in the program recording request.

Step 422 , the service control device 200 sends a prompt message to the STB 106 that the recording is successful.

In step 424, the EPG/WEB server 300 receives the user's browsing request for recorded programs. This browsing request includes the user ID, and may also include the content that the user needs to browse. For example, if the user only browses the recorded content of a certain day, no Make all recordings available to the user.

Step 426 , the EPG/WEB server 300 generates a program list of recorded programs according to the parameters in the program recording request recorded by the service control device 200 .

In step 428, the EPG/WEB server 300 sends the program list of recorded programs to the STB.

In step 430, the EPG/WEB server 300 receives the user's request to delete the recorded media file. The deletion request includes user identification, channel identification, program information to be deleted, program list information, and the like.

In step 432, the EPG/WEB server 300 forwards the program deletion request.

Step 434, the service control device 200 receives the forwarded program deletion request.

In step 436, the service control device 200 judges whether the user has the right to delete the program requested to be deleted. If there is permission, go to step 440; if not, go to step 438.

Step 438, the service control device 200 prompts the user to delete without permission.

In step 440, the service control device 200 judges whether the user has recorded the program requested to be deleted. If it has been recorded, execute step 444; if not, execute step 442.

Step 442, the service control device 200 prompts the user that the program has not been recorded.

In step 444, the service control device 200 judges whether there are other parameters of the program recording request corresponding to the program requested to be deleted by other users. If yes, go to step 446; otherwise, go to step 448.

Step 446, the service control device 200 sends a program deletion instruction to the recording and on-demand server 102, and the recording and on-demand server 102 deletes the requested program according to the deletion instruction.

Step 448 , the service control device 200 deletes the parameters in the corresponding recorded program recording request in the storage unit 234 .

Please refer to FIG. 10 , another embodiment of the present invention multicast recording method includes the following steps:

In step 502, the service control device 200 receives a program recording request. The program recording request includes parameters for requesting to record the program, and the parameters include a correspondence between the program recording request and the live program.

In step 504, the service control device 200 determines whether other users have recorded the program corresponding to the program recording request. If there is a program requested to be recorded included in the program recording request by other users, step 506 is executed; if there is no program requested to be recorded included in the program recording request of other users. Execute step 508.

Step 506, the service control device 200 directly records the parameters in the program recording request.

In step 508, the recording on-demand server 102 records the live program provided by the multicast source 104 according to the program recording request.

The program browsing and program deletion in the second embodiment are the same as the program browsing and program deletion in the first embodiment, and will not be repeated here.

The embodiment of the present invention directly records the parameters in the program recording request, does not need to repeatedly record the program, saves network resources, and avoids the situation that the same program is repeatedly copied in the network. For the entire multicast network system, network storage resources The efficiency is improved, and the processing capability of the media network system is enhanced. By controlling the start-up of the recording and on-demand server 300, the situation of wasting human resources caused by artificially controlling the start-up of the server is avoided. Prevent users from deleting other users' recording information by detecting the permissions requested by users for media file operations. By detecting whether the media file has been recorded, it prevents frequent operations on the recording and on-demand server 102 from causing server resource shortage, and improves operating efficiency. The user detects whether there is another user recording the program currently requested to operate, which reduces the waste of the storage space of the recording VOD server 102 and improves the storage efficiency. By sending prompt information to the user, the user can clearly understand the status and reason of the current request. By receiving the user's program operation request and forwarding the program operation request, the user can send the request to the service control device 200 without additional connection lines, saving network wiring and enabling the service control device 200 to interact with users.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (22)

1. a multicast recording method, is characterized in that, the method comprises the steps: The recording on-demand server records the live program provided by the multicast source in real time, and the recording method includes one-time sending and permanent recording; The service control device receives a program recording request, wherein the program recording request includes parameters for requesting to record the program, and the parameters include the corresponding relationship between the program recording request and the live program; The service control device directly records the parameters in the program recording request. 2. The multicast recording method according to claim 1, wherein, after the service control device receives the program recording request, the multicast recording method judges whether the live program recorded by the recording and on-demand server in real time contains Whether the program and recording corresponding to the program recording request are complete; If the corresponding program is included and recorded completely, execute the step of the service control device directly recording the parameters in the program recording request. 3. multicast recording method as claimed in claim 2, is characterized in that, the method also comprises the step: The electronic program guide EPG/WEB server generates a live program list, and the live program list includes the program list provided by the multicast source; and The EPG/WEB server issues the live program list, and the program recording request is based on the live program list request. 4. multicast recording method as claimed in claim 1, is characterized in that, this method also comprises the step: The service control device receives a user's browsing request for recorded programs, and the browsing request includes a user identification; The EPG/WEB server generates a program list of recorded programs according to the parameters in the recorded program recording request; The EPG/WEB server issues the program list of the recorded programs. 5. multicast recording method as claimed in claim 1, is characterized in that, this method also comprises the steps: The service control device receives the user's deletion request for the recorded program, and the deletion request includes user identification, channel identification, program information to be deleted and program list information; The service control device judges whether the user has the authority to delete the program requested to be deleted; If the user has permission to delete, the service control device deletes the parameters in the program recording request corresponding to the record. 6. multicast recording method as claimed in claim 5, is characterized in that, this method also comprises the steps: The service control device judges whether the user has recorded the program requested to be deleted; If the user has recorded the program requested to be deleted and has the right to delete it, the service control device deletes the corresponding parameters in the directly recorded program recording request. 7. multicast recording method as claimed in claim 6, is characterized in that, this method also comprises the step: The service control device judges whether there is a program recording request corresponding to the program requested to be deleted by other users; If other users have recorded the program, the user has already recorded the program requested to be deleted, and has the right to delete, then the service control device deletes the parameters in the corresponding recorded program recording request. 8. multicast recording method as claimed in claim 7, is characterized in that, this method also comprises the step: If no other user has recorded the program, the recording on-demand server deletes the program requested to be deleted. 9. A multicast recording method, characterized in that the method comprises the steps of: The service control device receives a program recording request, the program recording request includes parameters for requesting to record the program, and the parameters include the corresponding relationship between the program recording request and the live program; The service control device determines whether other users have recorded the program corresponding to the program recording request; If other users have recorded the requested program included in the program recording request, the service control device directly records the parameters in the program recording request. 10. A multicast recording system, characterized in that the system comprises: Recording on-demand server, used to record the live program provided by the multicast source, the recording method includes one-time sending and permanent recording; The service control device is configured to receive and record a program recording request, wherein the program recording request includes parameters for requesting to record the program, and the parameters include a corresponding relationship between the program recording request and the live program. 11. The multicast recording system according to claim 10, characterized in that, the system further comprises: an EPG/WEB server, which is used to generate and distribute the program guide/recorded program list. 12. A service control device, characterized in that the device comprises: The program operation receiving unit is used to record the live program provided by the multicast source in real time based on the recording and on-demand server, wherein the recording method includes sending a permanent recording once, receiving a program recording request, and the program recording request includes parameters for requesting to record the program, and the The parameter includes the corresponding relationship between the program recording request and the live program; The storage unit is used to record the parameters in the program operation request. 13. The service control device according to claim 12, characterized in that, the service control device further comprises: a start control unit, configured to provide a recording start signal to the recording on-demand server, and the recording start signal is used to indicate the The recording on demand server starts. 14. The service control device according to claim 12, further comprising: a detection module, configured to detect whether the program operation request satisfies the request requirement. 15. The service control device according to claim 12, wherein the detection module further comprises: a permission detection unit, configured to detect whether the user corresponding to the program operation request has permission to operate the recorded program; The detection unit is used to detect whether the user corresponding to the program operation request has recorded the program requested for operation; and the user recording detection unit is used to detect whether other users have recorded the program corresponding to the current program operation request. 16. The service control device according to claim 12, characterized in that, the service control device further comprises: a prompt unit, configured to send prompt information to the user, the prompt information includes: recording success information, unauthorized browsing information Or delete information without permission. 17. The service control device according to claim 12, characterized in that, the service control device further comprises: a deletion control module, configured to control a program deletion operation according to a user's program deletion request. 18. The service control device according to claim 17, wherein the deletion control module further comprises: a program deletion control unit for controlling the deletion of recorded programs; a record deletion control unit for controlling the storage The deletion of the parameters of the program operation request recorded in the unit; and the program list deletion control unit, which is used to control the user to request the deletion of the recorded program list. 19. The service control device according to claim 12, further comprising: a judging unit, configured to judge whether the recording-on-demand server has recorded the program corresponding to the program recording request. 20. A server for processing program operation requests, characterized in that the server comprises: a program list generation unit for generating a live program list; a program list delivery unit for providing the live program list to users; The operation relay unit is used to receive a program recording request, and the program recording request is based on the recording and on-demand server recording the live program provided by the multicast source in real time, wherein the recording method includes sending a permanent recording once, and the program recording request includes the requested recording program The parameter includes the corresponding relationship between the program recording request and the live program; and the operation request sending unit is used to forward the program recording request. 21. The server according to claim 20, further comprising: a program list obtaining unit, configured to obtain a program list recorded by the user. 22. The server according to claim 20, wherein the server is an EPG server or a WEB server.

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