WO2014023155A1

WO2014023155A1 - Method and device for implementing network personal video recorder service

Info

Publication number: WO2014023155A1
Application number: PCT/CN2013/079745
Authority: WO
Inventors: 刘云云; 熊勤
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-08-09
Filing date: 2013-07-19
Publication date: 2014-02-13
Also published as: CN102833579B; CN102833579A

Abstract

Disclosed are a method and device for implementing an NPVR service. The method comprises: after receiving an NPVR request, a service system sending the NPVR request to a CDN system; the CDN system controlling a CDN node corresponding to the NPVR request to record a program, and after the program is recorded, the CDN system sending a storage request to a storage system; and the storage system obtaining the recorded program from the CDN system according to the storage request, so as to obtain an NPVR file, storing the file, and then, notifying, through the CDN system, the service system that an NPVR service is completed. According to the present invention, NPVR content is stored into the storage system through the CDN system, and the NPVR content in the CDN system is no longer archived but used as common TVOD content for processing, and after aging time is reached, aging processing (deletion) can be performed, so that the problem of insufficient storage space in the CDN system that is caused by an increase of a demand of users for the NPVR service is solved.

Description

Method and device for realizing network personal video service

The present invention relates to the field of multimedia service technologies, and in particular, to a method and an apparatus for implementing a NPVR (Network Personal Video Recorder) service. Background technique

Multimedia services include Internet Protocol Television (IPTV), Mobile Streaming (MVS), and mobile TV. Internet TV is an Internet-based multimedia technology that provides users with a variety of interactive digital media services based on the existing network bandwidth infrastructure. With the improvement of network bandwidth and the development of network technology, the development of media value-added services based on multimedia networks such as network television has gradually become a trend.

In a multimedia service system, a plurality of media servers (nodes) are generally used to form a content distribution network (CDN) to provide services for end users. Generally, in order to reduce the concurrency of the central nodes, the storage content on each edge node is required to substantially satisfy the attribution. user.

The NPVR service can be provided in a multimedia service system such as IPTV, and the terminal can record the content of the program of interest through the NPVR service and save it on the CDN node. When the user terminal clicks on the NPVR content, the CDN system is accessed to obtain the location of the recorded content on the CDN node, and then the recorded content is obtained on the CDN node. The NPVR content usually needs to be stored on the CDN node for a long time to meet the needs of the user terminal. As the number of end users grows geometrically and the demand for NPVR services increases, CDN nodes need to be continuously expanded. However, this expansion method can only solve the capacity problem in a short period of time. At the same time, there are TVOD (True Video On Demand) deletion and aging efficiency problems of the CDN system. Therefore, how to resolve the contradiction between the capacity of the CDN system and the growth of the end user NPVR service, The CDN system for multimedia services needs to be solved urgently. Summary of the invention

The technical problem to be solved by the present invention is to provide a method and an apparatus for implementing an NPVR service, which are used to solve the contradiction between the capacity of the CDN system in the prior art and the growth demand of the NPVR service of the end user.

To solve the above technical problem, in one aspect, the present invention provides a method for implementing an NPVR service, including:

After receiving the network personal video NPVR request, the service system sends an NPVR request to the content distribution network CDN system;

The CDN system controls the CDN node corresponding to the NPVR request to record the program, and after the recording program is completed, the CDN system sends a storage request to the storage system;

The storage system acquires the NPVR file obtained by recording the program from the CDN system according to the storage request, saves it, and then notifies the service system NPVR service completion through the CDN system.

Further, after the NPVR service is completed, it also includes:

The terminal device sends an NPVR on-demand request to the service system;

After receiving the NPVR on-demand request, the service system sends an NPVR on-demand request message to the storage system;

After receiving the NPVR on-demand request, the storage system searches for the storage address of the NPVR file corresponding to the NPVR on-demand request, and sends the storage address as a return message to the service system;

After receiving the return message, the service system sends the return message to the terminal device; the terminal device sends a play request to the storage system according to the return message;

After receiving the play request, the storage system sends a play stream to the terminal device.

Further, the CDN system communicates with the storage system and between the terminal device and the storage system via HTTP.

Further, the storage system and the CDN system use FTP to transfer files. Further, after the NPVR service is completed, it also includes:

When the aging time is reached, the CDN system performs aging to delete the corresponding NPVR file.

In another aspect, the present invention also provides an apparatus for implementing an NPVR service, including: a service system configured to receive a network personal video NPVR request and then forward the content to a content distribution network

The CDN system sends an NPVR request;

a CDN system configured to control a CDN node corresponding to the NPVR request to record a program, and after the recording program is completed, the CDN system sends a storage request to the storage system;

The storage system is configured to obtain an NPVR file obtained by recording the program from the CDN system according to the storage request, save, and then notify the service system NPVR service completion through the CDN system.

Further, the service system is further configured to: after receiving the NPVR on-demand request sent by the terminal device to the service system, send an NPVR on-demand request message to the storage system; and configured to: after receiving the return message of the storage system, send the return message to a terminal device; the terminal device sends a play request to the storage system according to the return message;

The storage system is further configured to: after receiving the NPVR on-demand request, search for a storage address of the NPVR file corresponding to the NPVR on-demand request, and send the storage address as a return message to the service system; and, after receiving the play request sent by the terminal device, , sending a play stream to the terminal device.

Further, the storage system and the CDN system use FTP to transfer files.

Further, the method further includes: after the NPVR service is completed, the CDN system performs aging to delete the corresponding NPVR file.

The beneficial effects of the present invention are as follows:

The invention stores the NPVR content into the storage system through the CDN system, and the NPVR content in the CDN system is no longer archived, but is processed as ordinary TVOD content, when the aging is reached. After the interval, the aging process can be performed (delete); when the terminal device orders the NPVR content, the NPVR playback service is provided by the storage system, thereby solving the problem that the storage space of the CDN system is tight due to the increase in the number of users and the increase in the demand for the NPVR service. problem. DRAWINGS

1 is a flowchart of a method for implementing an NPVR service according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of an apparatus for implementing an NPVR service according to an embodiment of the present invention; FIG. 3 is a NPVR according to an embodiment of the present invention; A flowchart of a NGVR service implemented by a service implemented device. detailed description

The present invention will be further described in detail below in conjunction with the drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 1, the embodiment of the present invention relates to a method for implementing an NPVR service, including: Step S101: After receiving a NPVR request, the service system sends an NPVR request to a CDN system;

In this step, the user sends an NPVR request to the service system through the user terminal, requesting to record the related program. After receiving the NPVR request, the service system sends an NPVR request to the CDN system; the program is recorded by the CDN system.

Step S102, the CDN system controls the NPVR node corresponding to the NPVR request to record a program, and after the recording program is completed, the CDN system sends a storage request to the storage system;

In this step, after receiving the NPVR request, the CDN system first determines which media server to record the program on multiple media servers (CDN nodes). The CDN node corresponding to the NPVR request can be determined for recording according to the NPVR request. The recording request is delivered to the corresponding CDN node. After the recording of the media server is completed, the archiving task is not sent to the node, but the newly added storage system is notified. In the CDN system, the recorded content is completed when the aging is reached. After the (pre-set time), self-aging treatment (for example, directly delete), do not need to consider

NPVR archiving problem.

Step S103: The storage system obtains the NPVR file obtained by recording the program from the CDN system according to the storage request, saves, and then notifies the service system NPVR service completion through the CDN system.

In this step, after receiving the notification, the storage system copies the NPVR content (NPVR file) from the corresponding CDN node of the CDN system, and after the copying is completed, notifies the CDN system that the storage is completed; after the CDN system receives the storage completion notification message, The NPVR completion message is reported to the business system so that the NPVR content can be displayed on the EPG (Electronic Program Guide).

The storage system includes a storage control module and a plurality of storage modules, and the number of storage modules can be determined according to the stored data size. The storage control module is configured to control storage and playback operations of the plurality of storage modules, and is configured to communicate with the CDN system, the service system, and the terminal device.

When the terminal device orders the NPVR content, the service system notifies the storage system, and the storage system returns the storage location address of the NPVR content to the service system; the user terminal accesses the NPVR content on the storage system through the address, and completes the NPVR service; Process:

Step S1031: The terminal device sends an NPVR on-demand request to the service system.

Step S1032: After receiving the NPVR on-demand request, the service system sends an NPVR on-demand request message to the storage system.

Step S1033: After receiving the NPVR on-demand request, the storage system searches for the storage address of the NPVR file corresponding to the NPVR on-demand request, and sends the storage address as a return message to the service system.

Step S1034: After receiving the return message, the service system sends the return message to the terminal device. Step S1035: The terminal device sends a play request to the storage system according to the return message. Step S1036: After receiving the play request, the storage system sends the play code stream to the terminal device. In the above steps, the CDN system and the storage system can communicate with each other through, but not limited to, HTTP (Hypertext Transport Protocol); the storage system and the CDN system can transmit files through but not limited to FTP; terminal devices and storage systems Communication can be through, but not limited to, HTTP. The terminal device and the service system, and the service system and the storage system, and the CDN system can communicate with each other through, but not limited to, HTTP; other communication methods can also be used.

As shown in FIG. 2, an embodiment of the present invention further relates to an apparatus for implementing the NPVR service of the foregoing method, including:

The service system 202 is configured to send an NPVR request to the CDN system 203 after receiving the NPVR request; wherein, the NPVR request is sent by the terminal device 201 to the service system 202.

The CDN system 203 is configured to control a CDN node corresponding to the NPVR request to record a program, and after the recording program is completed, the CDN system sends a storage request to the storage system 204.

The storage system 204 is configured to obtain an NPVR file obtained by recording the program from the CDN system 203 according to the storage request, and save, and then notify the service system 202 that the NPVR service is completed by the CDN system 203.

The service system 202 is further configured to: after receiving the NPVR on-demand request sent by the terminal device 201 to the service system, send an NPVR on-demand request message to the storage system 204; and configured to receive the return message from the storage system 204, and then return the The message is sent to the terminal device 201; the terminal device 201 sends a play request to the storage system 204 according to the return message;

The storage system 204 is further configured to: after receiving the NPVR on-demand request, search for a storage address of the NPVR file corresponding to the NPVR on-demand request, and send the storage address as a return message to the service system 202; and, at the receiving terminal device 201, send After the play request, the play stream is transmitted to the terminal device 201. The CDN system 203 communicates with the storage system 204 via HTTP; the storage system 204 and the CDN system 203 transfer files by FTP; and the terminal device 201 and the storage system 204 communicate by HTTP.

Below, a detailed example is described in detail:

As shown in FIG. 3, the embodiment of the present invention mainly includes a service system, a CDN system, a storage system, and a terminal device. The service system includes an EPG and a CP (Control Point, a service control point); the CDN system includes a control module and a plurality of media servers, wherein the control module is configured to manage multiple media servers, and the service system and the storage system Information exchange; the new storage system includes a storage control module and a storage module, and the storage control module is responsible for managing the storage system and interacting with the CDN system, the service system, and the terminal device; the main function of the storage system is to save the NPVR file. In order to provide NPVR business services after the NPVR of the CDN system is aged.

In this embodiment, the format of the NPVR file is MPG (Moving Picture Experts Group), and the storage system copies the NPVR file from the CDN system by means of FTP (File Transfer Protocol).

The NPVR request process includes the following steps:

Step 300: The terminal device initiates an NPVR request to the service system.

Step 301: After receiving the NPVR request, the service system determines whether the user terminal has the NPVR authority. If the service system has the right, it returns a successful response to the terminal device, otherwise the return fails, and the process terminates;

Step 302: The service system sends an NPVR request to the control module of the CDN system. Step 303: After receiving the NPVR request, the control module of the CDN system sends a recording request to the media server corresponding to the terminal device.

Step 304: After the recording of the NPVR node is completed, return the recording result to the control module of the CDN system. If the recording is successful, the return is successful, and the NPVR process continues; if it fails, the return is lost. Lose, and report failure to the business system, the process ends;

Step 305: After receiving the recording reported by the NPVR node device, the control module of the CDN system sends a storage request to the storage control module of the storage system by using an HTTP method.

Step 306: After receiving the storage request, the storage control module of the storage system returns a response to the CDN system;

Step 307: The storage control module of the storage system sends the storage request to the storage module. Step 308: After receiving the storage request, the storage module obtains the corresponding NPVR file from the CDN system through the FTP method.

Step 309: After the storage system copies the NPVR file, notify the storage control module; Step 310: After receiving the NPVR completion message, the storage control module notifies the control module of the CDN system;

Step 311: The control module of the CDN system notifies the service system of the NPVR completion message, where the message contains the address information of the storage system control module, and after the service system receives the message, the NPVR can be requested on the program list.

User terminal equipment (such as set-top box) on-demand request NPVR process:

Step 312: The terminal device sends (via HTTP) the NPVR on-demand request to the service system.

Step 313: After receiving the NPVR on-demand request, the service system sends an NPVR on-demand request message to the storage control module of the storage system.

Step 314: After receiving the NPVR on-demand request, the storage control module searches for a storage module where the NPVR file corresponding to the NPVR on-demand request is located, and returns the address information stored in the NPVR file to the service system.

Step 315: After receiving the return message, the service system sends the message to the terminal device. Step 316: The terminal device sends a play request to the storage module of the storage system according to the return message. Step 317: After receiving the play request message, the storage module sends a play code stream to the terminal device to complete the NPVR content on-demand process.

It should be noted that, in this embodiment, the CDN system communicates with the storage system through HTTP, and the file between the storage module and the CDN system is transmitted by FTP, and the terminal device and the service system communicate by HTTP. Other different media interaction protocols and file transmission methods may also be used in the embodiments, and the present invention is not limited to the above manner. In addition, in the MPG format of the NPVR file in this embodiment, other coding formats, such as MP4, MPEG-4, etc., may be used in practical applications, and the encoding format of the media need not be limited to the specific format in this embodiment.

It can be seen from the above embodiment that the NPVR service is implemented in the present invention, and the separation from the CDN system is realized. The NPVR content is stored in the storage system through the CDN system, and the NPVR content in the CDN system is no longer archived, but is used as an ordinary TVOD. Content processing, after the aging time is reached, the aging process can be performed (delete); when the terminal device orders the NPVR content, the NPVR playback service is provided by the storage system, thereby solving the problem that the NPVR service demand increases due to the increase of users. The problem of tight storage space in the CDN system.

While the preferred embodiments of the present invention have been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.

Industrial applicability

The invention stores the NPVR content into the storage system through the CDN system, and the NPVR content in the CDN system is no longer archived, but is processed as ordinary TVOD content, and after the aging time is reached, the aging processing (deletion) can be performed; When the device broadcasts the NPVR content, the NPVR playback service is provided by the storage system, thereby solving the problem that the storage space of the CDN system is tight due to an increase in the number of users and an increase in the demand for the NPVR service.

Claims

claims

1. A method for realizing network personal video recording service, including:

After receiving the network personal video NPVR request, the business system sends the NPVR request to the content distribution network CDN system;

The CDN system controls the CDN node corresponding to the NPVR request to record the program. After the recording of the program is completed, the CDN system sends a storage request to the storage system;

The storage system obtains the NPVR file obtained by recording the program from the CDN system according to the storage request, saves it, and then notifies the business system through the CDN system that the NPVR service is completed.

2. The method for realizing the network personal video recording service as claimed in claim 1, wherein after the NPVR service is completed, the method further includes:

The terminal device sends an NPVR on-demand request to the business system;

After receiving the NPVR on-demand request, the business system sends the NPVR on-demand request message to the storage system;

After the storage system receives the NPVR on-demand request, it searches for the storage address of the NPVR file corresponding to the NPVR on-demand request, and sends the storage address as a return message to the business system;

After receiving the return message, the business system sends the return message to the terminal device; the terminal device sends a playback request to the storage system according to the return message;

After receiving the playback request, the storage system sends the playback code stream to the terminal device.

3. The method for realizing the network personal video recording service as claimed in claim 2, wherein the communication between the CDN system and the storage system, and between the terminal device and the storage system is through HTTP.

4. The method for realizing the network personal video recording service as claimed in claim 3, wherein the FTP method is used to transmit files between the storage system and the CDN system.

5. The method for realizing the network personal video recording service according to any one of claims 1 to 4, wherein after the NPVR service is completed, the method further includes: When the aging time is reached, the CDN system ages and deletes the corresponding NPVR file.

6. A device for realizing network personal video recording service, including:

The business system is configured to send the NPVR request to the content distribution network CDN system after receiving the network personal video NPVR request;

The CDN system is configured to control the CDN node corresponding to the NPVR request to record the program. After the recording of the program is completed, the CDN system sends a storage request to the storage system;

The storage system is configured to obtain the NPVR file obtained by recording the program from the CDN system according to the storage request, save it, and then notify the business system through the CDN system that the NPVR service is completed.

7. The device for realizing the network personal video recording service according to claim 6, wherein the business system is further configured to send an NPVR on-demand request message to the storage system after receiving the NPVR on-demand request sent by the terminal device to the business system; and is configured to: After receiving the return message from the storage system, the return message is sent to the terminal device; the terminal device sends a playback request to the storage system according to the return message;

The storage system is also configured to, after receiving the NPVR on-demand request, search for the storage address of the NPVR file corresponding to the NPVR on-demand request, and send the storage address to the business system as a return message; and, after receiving the playback request sent by the terminal device , send the playback code stream to the terminal device.

8. The device for realizing the network personal video recording service as claimed in claim 7, wherein the communication between the CDN system and the storage system, and between the terminal device and the storage system is through HTTP.

9. The device for realizing the network personal video recording service as claimed in claim 8, wherein the FTP method is used to transmit files between the storage system and the CDN system.

10. The device for realizing the network personal video recording service according to any one of claims 6 to 9, further comprising:

After the NPVR service is completed, the CDN system ages and deletes the corresponding NPVR files when the aging time is reached.