KR101065457B1 - System and method for servicing multimedia contents - Google Patents

Abstract

The present invention relates to a multimedia content service system and method. The multimedia content service method of the present invention receives a request for data transmission of multimedia content from a client to check whether the data is stored in a database, and if the requested multimedia content data is data stored in a database of another system, data transmission is reserved. It receives data from other system that stores data and provides it to client. In this way, each server can provide various contents to the client without having a separate relay server while a plurality of central servers are connected.

Multimedia contents, relay server, reservation

Description

Multimedia Contents Service System and Method {SYSTEM AND METHOD FOR SERVICING MULTIMEDIA CONTENTS}

1 is a diagram showing the configuration of a multimedia content service system according to an embodiment of the present invention.

2 is a diagram illustrating an example of data stored in a second content list DB in a multimedia content service system according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a process of performing a service in a multimedia content service system according to an exemplary embodiment of the present invention.

The present invention relates to a multimedia content service system and method.

In recent years, Internet broadcasting, which is a converged form of broadcasting and communication by the implementation of a high-speed information communication network that transmits high-capacity information in a short time, has escaped from the one-sided organization structure that appears in existing airwave or cable broadcasting. Service through streaming technology to listen to or watch at any time by selecting the broadcast.                         

Such multimedia content services such as Internet broadcasting and video on demand (VOD) classify all contents from a content provider to be provided by a central server and store them in a database of a central server, and a client connects to the central server and is connected to the central server. In this state, the content stored in the database of the central server is provided.

Therefore, the traffic is concentrated to the central server. Therefore, when the client connects to the central server from a remote network or a foreign country, the service takes a long time and the network situation is unstable, so it is difficult to receive a stable service.

In order to solve this problem, conventionally, a local server that stores contents such as a central server has been used to distribute traffic concentrated on the central server. This method is efficient when the amount of content is small and the content does not change frequently, but when the amount of the content is large and changes frequently, it is expensive and difficult to maintain the local server.

Therefore, the technical problem of the present invention is to synchronize the content list with the central server that provides the multimedia content, to reserve the desired content from the client to receive the reserved content in advance, the multimedia content providing the content received when the client requests It is to provide a service system and method.

The multimedia content service system according to the characteristics of the present invention for solving this problem is a system for providing multimedia content to the client over a network,

A database storing a list of multimedia contents and data to be provided to the client and a list of multimedia contents of another system connected through a network and data received from the other system; A content manager configured to manage the multimedia content list and data stored in the database and update the multimedia content list stored in the database of the other system at predetermined intervals; And a reservation / transmitter configured to receive a data transmission reservation for the multimedia content list from the client and the other system, and to provide multimedia content data stored in the database at the request of the client and the other system. It includes a traffic management unit for calculating the service available time of the multimedia content data reserved for transmission from the reservation / transmission unit to another system.

According to another aspect of the present invention, there is provided a method for providing multimedia content to a client through a network.

a) updating a list of multimedia contents of another system connected through a network at predetermined time intervals; b) providing a list of multimedia contents stored in a database at the request of the client; c) receiving a request for data transmission of the multimedia content included in the list from the client to check whether the data is stored in a database; And d) if the multimedia content data requested from the client is data stored in a database of the other system, receiving a data transmission from the client, receiving the data from another system in which the data is stored, and providing the data to the client. do.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention. Like parts are designated by like reference numerals throughout the specification.

First, a multimedia content service system according to an exemplary embodiment of the present invention will be described in detail with reference to FIG. 1.

1 is a diagram showing the configuration of a multimedia content service system according to an embodiment of the present invention.

As shown in FIG. 1, the multimedia content service system according to an exemplary embodiment of the present invention includes servers A (100), B (200), and C (300), which are connected to each other through a long-distance network. , A plurality of client computers 150, 250, 350 are connected.

The server A 100 operates as a central server for the client 150 connected through the local area network, and acts as a relay server for the other servers 200 and 300 connected through the remote network.

To this end, the server A 100 includes a content manager 110, a reservation / transmitter 120, a traffic manager 130, and a database 140. The server B 200 and the server C 300 are also configured in the same manner as the server A 100, and hereinafter, the configuration of the server A 100 will be described for convenience of description.

The content manager 110 manages a content list stored in its database 140, and updates the content list of other servers 200 and 300 connected through a remote network at predetermined time intervals.

The reservation / transmitter 120 transmits the requested content from the client 150 connected through the local area network, and the content is not stored in the database 140 from the client 150 but is included in the content data included in the content list. Is reserved for transmission.

The traffic management unit 130 calculates a content service available time by managing traffic of the current server and other servers 200 and 300 connected through the local area network.

The database 140 may include a first content list DB 141 in which a content list managed by the user is stored, a first content DB 142 in which actual content data corresponding to the first content list is stored, and another connected through a local area network. Content transmission from the second content list DB 143 storing the content list of the server and the second content DB 144 storing some content data among the contents included in the second content list and the other servers 200 and 300. This reserved list DB 145 is included. In this case, the second content list DB 143 includes a capacity (size) of the content data, a server (providing server) that provides the content data, and serviceable time information.

2 illustrates an example of data stored in the second content list DB 143.

As shown in FIG. 2, the second content list DB 143 stores serviceable time information such as “immediately available”, “after 3 hours”, “after 15 minutes”, and the like. Calculated by the manager 130 and updated at regular time intervals.

At this time, the serviceable time T of the content is calculated by the following equation (1).

In the above formula, t is the time it takes to transfer the other reserved content first in the server to provide the requested content, s is a fixed value of the data size of the requested content, v is relayed from the content providing server measured in real time The transfer speed to the server, r is the spare time for the network environment changes.

That is, the content providing server has three transmission queues. The first transmission queue is 10 minutes 35 minutes (45 minutes in total), the second transmission queue is 5 minutes 20 minutes 25 minutes (50 minutes in total), and the third transmission queue is Assuming content delivery is scheduled for 15 minutes 40 minutes (55 minutes total), the shortest waiting time of 45 minutes is t. In addition, v is calculated in real time using the transmission time of the content being transmitted from the current content providing server to the relay server, and if there is no content currently being transmitted, the relay server requests transmission of a packet for traffic measurement to the content providing server. It can be measured.

In addition, r is proportional to the content data size s, and can be considered as a value obtained by multiplying the variable x by (s / v). Therefore, the serviceable time T of the content is as shown in Equation 2 below.

Next, with reference to Figure 3 will be described in detail the operation of the multimedia content service system according to an embodiment of the present invention.

3 is a flowchart illustrating a process of performing a service in a multimedia content service system according to an exemplary embodiment of the present invention.

As shown in FIG. 3, when the client 150 connects to the server A 100 and requests transmission of predetermined content data, the reservation / transmitter 110 of the server A 100 is configured to store the database 140. The first and second content list DBs 141 and 143 are searched to determine whether the content requested by the client 150 is included in the list (S300 to 302).

If the check result is stored in the first content list DB 141, the reservation / transmitter 110 retrieves the corresponding content from the first content DB 142 and immediately transmits the corresponding content to the client 150 (S303 to 304). If the requested content is stored in the second content list DB 143, the estimated transmission time information of the corresponding content is checked (S305). If the serviceable time information is "immediately available", the corresponding content data is retrieved from the second content DB 144 (S306) and immediately transmitted to the client 150 (S304).

On the other hand, if the requested content exists in the second content list DB 143 but the serviceable time is not "immediately available", whether the reservation / transmitter 110 reserves and transmits the content to the client 150. Ask (S307). When the client 150 requests the reservation transmission, the reservation / transmission unit 110 accesses the server B 200 in which the requested content is stored and reserves the content transmission (S308 to 309). The reservation / transmitter 210 of the server B 200 that has received the content transmission request stores the requested content list in the reserved content list DB 145 and stores the content data in accordance with the reserved order and priority. (S310 ~ 311).

When the content data scheduled to be transmitted from the client 150 is transmitted from the server B 200, the content management unit 110 of the server A 100 stores the transmitted content data in the second content DB 144. The serviceable time information of the corresponding content stored in the content DB 143 is changed to "immediately possible" and the client 150 is informed that the content data can be transmitted (S312 to 313).

When the client 150 requests the corresponding content transmission to the server A 100 again (S300), the server A 100 transmits the corresponding content data to the client 150 through the processes of S301 to 304 above.

On the other hand, the reservation / transmission unit 210 uses the SRT (Shortest remaining time first) algorithm during the daytime traffic heavy time, to determine the priority of the reserved content delivery priority, FIFO (First in first out) during the night traffic time ) Or round robin (RR).

In addition, the content management unit 110 is requested from the client 150 and stored in the second content DB 144, the request from the other client while the transmission of the content to the client 150 is completed and a predetermined time elapses The capacity of the database 140 can be managed by deleting the content data without the second content from the second content DB 144. At this time, the content manager 110 modifies the serviceable time information on the deleted content stored in the second content list DB 143.

Although the preferred embodiment of the present invention has been described in detail above, the present invention is not limited thereto, and various other changes and modifications are possible.

That is, in the exemplary embodiment of the present invention, a process in which the client 150 requests and reserves the content data stored in the server B 200 through the server A 100 has been described. It is also possible to request and receive the content data stored in the server C (300) through the reservation, the client 250 connected to the server B (200) or the client 350 connected to the server C (300) of each server Through the reservation request to the content data stored in the server A (100) may be transmitted.

In addition, although the embodiment of the present invention has been described with three servers connected as an example, the present invention may be applied to an environment in which three or more servers are connected.

As described above, using the multimedia content service system and method according to the present invention, each server can provide various contents to clients without having a separate relay server while a plurality of central servers are connected.

In addition, the client reserves the multimedia content stored in the server connected through the remote network to the server connected via the local area network, and the server located in the local area receives the multimedia content from the remote server to provide the client to the client to disconnect the service during the service I can solve it.

Claims (11)

In the multimedia content service system including a plurality of servers serving as a content providing server or a relay server, A first server for storing a first content list and content data corresponding to the first content list; A second server storing a second content list and content data corresponding to the second content list, and storing a first content list updated from the first server, The second server, Providing the client with the first content list and the second content list, and receiving one piece of content data included in the first content list requested from the client from the first server and delivering the content data to the client; Service system. The method of claim 1, The second server A content list DB including the first content list and the second content list; A reserved content list DB including a content list requested from the client of the first content list; And And a content DB including the plurality of content data corresponding to the second content list and the one content data. The method of claim 2, The content list DB is The multimedia content service system further includes capacity information and serviceable time information of each of the plurality of content data corresponding to the first content list. The method of claim 3, wherein The second server Each of the plurality of pieces of content data corresponding to the first list of contents using capacity information of each of the plurality of pieces of content data corresponding to the first list of contents and information of a transmission rate from the first server to the second server. The multimedia content service system further comprises a traffic management unit for calculating the serviceable time information of the. The method of claim 1, The second server And a content manager configured to receive the first content list from the first server at a predetermined time interval and update the first content list. The method of claim 1, The client is And a multimedia content service system communicating with the second server through a local area network. The method of claim 1, The second server And transmitting the one piece of content data to the client, and then deleting the one piece of content data when there is no request for transmission of the piece of content data for a predetermined time. In the multimedia content service method for providing a multimedia content to a client system comprising a plurality of servers serving as a content providing server or a relay server, Checking, by a first server of the plurality of servers, whether a content requested from the client is included in a first content list, wherein the first content list is a list of contents stored in the first server; If the content requested from the client is not included in the first content list and the content requested from the client is included in the second content list updated from a second server among the plurality of servers, the request from the client Checking whether the content is immediately serviceable; If the content requested from the client is not immediately serviceable, the first server receiving content requested from the client from the second server; And And transmitting, by the first server, content received from the second server to the client. The method of claim 8, If the first content list includes content requested from the client, the first server transmitting the content requested from the client to the client. delete delete

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