KR20080053794A - System and method of servicing moving picture contents in communication network - Google Patents

Abstract

A system and a method for providing a moving picture contents service in the network are provided to play a moving picture stably which is stored in a remote terminal in a mobile terminal by adjusting transfer time intervals of moving picture frames received from a moving picture server according to network delay when a moving picture file stored in the remote terminal is played by using the mobile terminal. A plurality of terminals(10) stores moving picture files on the network. A moving picture server(20) adjusts transfer time intervals of moving picture frames forming the moving picture file stored in the terminals. A mobile terminal(40) connects to one of the terminals, and displays the moving picture frames on a screen by receiving the moving picture frames stored in the connected terminal through the moving picture server. A service server(30) connects the mobile terminal to one of the terminals. The image server records transmission time to a data header of each moving picture frame and transmits the moving picture frame to the mobile terminal at regular time intervals to adjust the transmission time intervals of the moving picture frames.

Description

System and Method of Serving Moving Picture Contents in Communication Network

1 is a block diagram showing the configuration of a video content service system in a communication network according to an embodiment of the present invention.

2 is a flowchart illustrating a video content service method in a communication network according to an exemplary embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: terminal 20: video server

30: Agent Connection Server (ACS) 40: Agent Status Database (ASD) Server

50: Keyword Index Database (KID) server 60: Mobile Connection Server (MCS)

70: mobile communication terminal 80: mobile communication provider

The present invention relates to a video content service system and method in a communication network, and more particularly, to a video content service system and method in a communication network for stably playing a video file stored in a terminal using a mobile communication terminal. It is about.

Today's mobile terminals provide additional services such as telephony, games, email, message exchange and multimedia functions.

In particular, the mobile communication terminal is equipped with an application that can view (View) or manage the video content. Accordingly, the user can watch a video through the mobile communication terminal.

However, the video content played in the mobile communication terminal is content provided by a specific content service server.

That is, in order to check the video content in the mobile communication terminal, there is a problem that the video frame of the video to be checked must be provided through a gateway of a specific communication company and a specific content service server.

In other words, in order to check video content using a mobile communication terminal, an application and video content provided by a specific content service server must be used. In other words, in order to check video content using a mobile communication terminal, a limited service according to a predetermined format must be used.

Accordingly, there is a problem in that the range is significantly limited in confirming the video content using the mobile communication terminal.

In addition, the mobile communication terminal receives the video frames of the video to identify the video content from a specific content service server and displays the received video frames at predetermined time intervals, respectively. That is, the mobile communication terminal receives the video frames at a predetermined interval from the specific content service server through the video server and displays them on the screen to play the video.

Here, the mobile communication terminal requests a video frame every time to the video server and receives the video frame from the video server. That is, conventionally, a process of requesting a video frame from a mobile communication terminal to a video server in order to execute a video in real time under a wireless mobile communication network condition, and when the video frame arrives from the corresponding video server in response thereto, requests for the next video frame again. Will be repeated.

Therefore, there is a problem that the playback speed of the video displayed on the mobile communication terminal is very low.

For example, if the data transmission speed of the current communication network cannot follow the data transmission speed of the video server (for example, the transmission time interval of the video frame), the display interval of the video frame displayed on the mobile terminal is determined by the video server. It becomes larger than the interval for transmitting the video frame.

As described above, when a video frame transmission congestion occurs in a communication network, a slow video phenomenon may appear when displaying a moving image in a mobile communication terminal.

In detail, the transmission of video frames between the video server and the mobile communication terminal is performed through the TCP connection between the video server and the mobile communication terminal. When frame transmission congestion occurs, there is a difference in transmission time and reception time of a video frame, which is a video source, and the amount of buffering is gradually increased on the communication network, and thus the TCP connection is disconnected because the response speed is very slow. There was a problem that the losing phenomenon occurs.

SUMMARY OF THE INVENTION The present invention provides a video content service system and method in a communication network for stably playing a video file stored in a terminal remotely using a mobile communication terminal. There is a purpose.

In addition, the present invention, when playing a video file stored in the terminal remotely using a mobile communication terminal, by adjusting the transmission time interval of the video frames transmitted from the video server according to the delay time according to the communication network environment, the corresponding movement The purpose of this is to stably play a video in a communication terminal.

According to an aspect of the present invention, there is provided a video content service system in a communication network, including: a plurality of terminals having video files stored in a communication network; A video server for adjusting a transmission time interval of each of video frames constituting a video file stored in the plurality of terminals; A mobile communication terminal connected to one of the plurality of terminals and receiving image frames constituting a video file stored in the connected terminal through the video server and displaying the video frames on a screen; And a service server unit for connecting the mobile communication terminal to one of the plurality of terminals.

On the other hand, the video content service method in a communication network according to an embodiment of the present invention, in the video content service method in a communication network, the mobile communication terminal in one of a plurality of terminals in which the video file is stored through the service server Connecting; Transmitting, by the connected terminal, a video file stored in response to a video file transmission request of the mobile communication terminal to an image server; Receiving a video file from the terminal at the video server and transmitting video frames constituting the received video file to a mobile communication terminal by adjusting a transmission time interval; The mobile communication terminal receives the video frames from the video server and displays them on a screen to perform a process of playing a video.

As shown in FIG. 1, the configuration of a video content service system in a communication network according to an embodiment of the present invention includes a terminal 10, an image server 20, a service server unit 30, and a mobile communication terminal ( 40 and the mobile communication service provider 50.

The terminal 10 is connected to the video server 20 and the service server unit 30 by wire. The service server unit 30 is connected to the video server 20 and the mobile communication service provider 50 by wire. In addition, the mobile communication provider 50 and the mobile communication terminal 40 are connected to a wireless communication environment. For example, the terminal 10 includes a PC (Persnal Computer), a video content server, a web server, and the like.

The terminal 10 stores a video content management related application therein. For example, the terminal 10 stores an application related to playing a video.

In addition, the terminal 10 has a function of setting whether or not to share in the folder where the video file is stored. That is, the terminal 10 sets whether to share or not to the folder. For example, if you have a folder with video files, set your visibility to View Only Me, View My Family, View Friends, and View Anyone. That is, the terminal 10 sets a disclosure range such as all disclosure in a folder, only a designated person, and all private.

In addition, the terminal 10 generates the terminal information and the video file keyword information to access the service server unit 30 and transmits it to the ACS (31). For example, the terminal information is an IP address or subscriber registration information (ie, ID and password) of the terminal 10 and an identification number or a telephone number of the mobile communication terminal allowing access.

In addition, the terminal 10 is connected to the ACS (31) and transmits a variety of information. For example, the terminal 10 transmits a photo file, a video file, a music file, an internet connection state, and the like to the ACS 31.

In addition, the terminal 10 edits the video file according to the display size according to the type of the mobile communication terminal 40 and transmits the edited video file to the mobile communication terminal 40 through the video server 20. send. For example, the terminal 10 edits the image frames constituting the video file to 144X176, 240X320, 320X240 (galophone) using edit formats such as JPG, PNG, and BMP. That is, there is a function of editing the size of the image frames constituting the corresponding video content to the size optimized for the screen of the mobile communication terminal 40.

In addition, the terminal 10 transmits a corresponding video file to the video server 20 according to a video file transmission request from the mobile communication terminal 40.

The service server unit 30 connects the mobile communication terminal 40 to the terminal 10. For example, the service server unit 30 connects the terminal 10 and the mobile communication terminal 40 to a point-to-point protocol.

In detail, the service server unit 30 includes an agent connection server (ACS) 31, an agent status database (ASD) server 32, a keyword index database (KID) server 33, and a mobile connection server (MCS). 34 is made.

One or more trunks (Trunk) for communication between the ACS (31) and the MCS (34) is made by connecting to the TCP / IP socket.

The ASD server 32 and the KID server 33 are connected to the ACS 31 and the MCS 34, respectively.

The ACS 31 receives the terminal information and the video file keyword information from the terminal 10 and performs an access authentication procedure through the ASD server 32 using the received terminal information among them, and then access approval. In the case of accepting the connection of the terminal 10.

In addition, the ACS 31 receives the terminal information and the video file keyword information from the terminal 10 to generate the video file keyword information for each terminal information using the same, and then transmits it to the KID server 33. For example, the video file keyword information refers to a text title of the video file.

In addition, the ACS 31 receives the terminal connection request from the mobile communication terminal 40 through the mobile communication provider 50 and the MCS 34 to the terminal 10 requesting the connection to the mobile communication terminal. (40) is connected.

The ASD server 32 previously stores subscriber terminal information and subscriber mobile communication terminal information of a service provided by the service server unit 30. For example, the subscriber information is a terminal IP address or subscriber registration information of the subscriber and a phone number or identification number of the subscriber mobile communication terminal.

The ASD server 32 receives terminal information from the ACS 31 and stores it therein. For example, the terminal information is an accessible mobile communication terminal telephone number corresponding to the terminal IP address.

In addition, the ASD server 32 reads list information of terminals accessible from the mobile communication terminal 40 among terminal information stored therein according to a request for access to the terminal accessible from the mobile communication terminal 40. This is transmitted to the mobile communication terminal 40 through the MCS 34 and the mobile communication provider 50.

The KID server 33 receives video file keyword information for each terminal information from the ACS 31 and stores it in a database.

In addition, the KID server 33 reads the video file keyword list information for each terminal information which is stored in a database and stored therein according to the video file keyword search request from the mobile communication terminal 40, and the MCS 34 reads it. And transmits to the mobile communication terminal 40 through a mobile communication provider (50).

The MCS 34 receives mobile communication terminal information from the mobile communication terminal 40 and performs a connection authentication procedure through the ASD server 32 using the mobile communication terminal information. Accept the connection of 40).

In addition, the MCS 34 connects the mobile communication terminal 40 to a corresponding terminal according to a terminal access request or a video file storage terminal access request from the mobile communication terminal 40.

The mobile communication terminal 40 pre-stores a video file playback related application therein.

In addition, the mobile communication terminal 40 generates mobile communication terminal information to access the MCS 34 through the mobile communication provider 50 and transmits the information to the MCS 34. For example, the mobile communication terminal information is user registration information or an identification number or a phone number of the mobile communication terminal 40.

The mobile communication provider 50 connects the mobile communication terminal 40 with a wired communication network. That is, the mobile communication provider 50 connects the mobile communication terminal 40 with the MCS 34 of the service server unit 30.

The video server 20 receives the video file from the terminal 10 and adjusts the transmission time interval of the video frames constituting the received video file through the service server unit 30 through the mobile communication terminal ( 40).

In the above-described configuration, a video content service method in a communication network according to an embodiment of the present invention will be described with reference to the flowchart shown in FIG. 2.

First, when a user executes a video content management related application on the terminal 10 to connect the terminal 10 to the service server unit 30, the terminal 10 receives terminal information and video file keyword information. It generates and accesses the service server 30 using it. Specifically, the terminal 10 is connected to the ACS 31.

Here, the terminal information is the IP address of the terminal 10 and the telephone number of the mobile communication terminal 40 to which the terminal 10 allows access to itself. The video file keyword information is a text title of a video file in a shared folder stored in the terminal 10.

In addition, it should be understood that the terminal 10 may set whether to share the shared folder stored therein and the public scope. For example, the terminal 10 may set a public range of the shared folder by designating a phone number of a mobile communication terminal allowing sharing to a shared folder.

The service server unit 30 can access a plurality of terminals and mobile communication terminals having the application.

For example, the application provides a video content management function for playing, storing, editing, transmitting, and deleting a video file.

In detail, the terminal 10 on which the application is executed generates terminal information and video file keyword information and transmits the generated terminal information and video file keyword information to the ACS 31.

Accordingly, the ACS 31 receives the terminal information and the video file keyword information from the terminal 10 and transmits the received terminal information to the ASD server 32.

Then, the ASD server 32 receives the terminal information from the ACS 31 and stores it therein, and compares it with the previously stored subscriber terminal information to perform an access authentication procedure. In this case, the service server unit 30 may store the terminal information in the ASD server 32 to check and manage a terminal currently connected to the terminal. For example, the service server unit 30 may check the IP address of the terminal 10 connected to it.

In the case of connection approval as a result of performing the connection authentication procedure, the ASD server 32 generates a connection approval signal and notifies the ACS 31. Accordingly, the ACS 31 permits the connection of the terminal 10 and maintains the connection.

The ACS 31 generates video file keyword information for each terminal information using the terminal information received from the terminal 10 and the video file keyword information, and transmits the generated video file keyword information to the KID server 33.

Accordingly, the KID server 33 receives the video file keyword information for each terminal information from the ACS 31 and stores the received information in a database.

In this case, when the user executes the video file playback related application stored in the mobile communication terminal 40 to play the video file stored in the terminal 10 by using the mobile communication terminal 40, The mobile communication terminal 40 generates mobile communication terminal information to access the service server unit 30 and accesses the service server unit 30 using the same. Specifically, the mobile communication terminal 40 connects to the MCS 34 using the mobile communication terminal information. For example, the mobile communication terminal information is a phone number of the mobile communication terminal 40.

For example, the application provides a video content management function for playing, storing, editing, transmitting, and deleting a video file.

In detail, the mobile communication terminal 40 on which the application is executed generates mobile communication terminal information and transmits the information to the MCS 34.

Accordingly, the MCS 34 receives mobile communication terminal information from the mobile communication terminal 40 and transmits the received mobile communication terminal information to the ASD server 32.

Then, the ASD server 32 receives the mobile communication terminal information from the MCS 34 and compares it with the subscriber mobile communication terminal information previously stored and performs the access authentication procedure.

In the case of connection approval as a result of performing the connection authentication procedure, the ASD server 32 generates a connection approval signal and notifies the MCS 34. Accordingly, the MCS 34 permits the connection of the mobile communication terminal 40 and maintains the connection.

As described above, in the case where the terminal 10 and the mobile communication terminal 40 are connected to the service server unit 30, when a user makes a request for access to the terminal through the mobile communication terminal 40. The mobile communication terminal 40 generates a connectable terminal search request signal and transmits it to the ASD server 32 via the mobile communication provider 50 and the MCS 34. Here, the connectable terminal search request signal includes the mobile communication terminal 40 information.

Accordingly, the ASD server 32 receives the connectable terminal search request signal from the mobile communication terminal 40 and is included in the received connectable terminal search request signal. After retrieving the terminal information stored therein by using the information (for example, the phone number of the mobile communication terminal 40), the MCS 34 and the list information of the terminals having the retrieved terminal information are moved. The mobile communication terminal 50 transmits the data to the mobile communication terminal 40. Here, the list information of the corresponding terminals includes information on the terminal IP address of each terminal.

For example, the ASD server 32 retrieves a phone number corresponding to the phone number of the mobile communication terminal 40 from among the phone numbers of the mobile communication terminal allowing the access included in the terminal information stored therein. Search for the terminals corresponding to the terminal information including the searched telephone number and list the searched terminals to the mobile communication terminal 40 through the MCS 34 and the mobile communication service provider 50; send.

Accordingly, the mobile communication terminal 40 receives the list information of the terminals from the ASD server 32 and displays the list of the received terminals on the screen.

In this case, when the user checks the list of terminals displayed on the mobile communication terminal 40 and selects a desired terminal 10 by using a selection key button (not shown in the figure for convenience of description), the mobile communication terminal 40 ) Generates a terminal access request signal to access the selected terminal 10 and transmits the terminal access request signal to the ACS 31 through the mobile communication provider 50 and the MCS 34. Here, the terminal access request signal includes the terminal IP address of the selected terminal 10. It should be understood that the terminal IP address included in the list information of the terminals received from the ASD server 32 is included in the terminal access request signal.

Accordingly, the ACS 31 receives the terminal access request signal from the mobile communication terminal 40 and checks the terminal IP address included in the received terminal access request signal, and the terminal corresponding to the confirmed terminal IP address. The mobile communication terminal 40 is connected to (10).

Here, the ACS 31 connects the selected terminal 10 to the mobile communication terminal 40 directly through the MCS 34. For example, they are connected by a point-to-point protocol.

Accordingly, the terminal 10 checks the mobile communication terminal information of the mobile communication terminal 40 connected by the direct communication to determine whether the mobile communication terminal 40 corresponds to the public range of the shared folder stored therein. .

Here, it should be understood that the disclosure range of the shared folder is preset by using the telephone number of the mobile communication terminal allowing sharing. For example, only a mobile communication terminal having a phone number that matches the phone number set in the shared folder can access the shared folder and check the video file in the connected shared folder.

In this case, when the mobile communication terminal 40 corresponds to the public range of the shared folder, the terminal 10 allows the mobile communication terminal 40 to access the shared folder and accesses the shared folder to which the connection is permitted. It is disclosed to the mobile communication terminal 40.

Thus, after the user selects a shared folder in the selected terminal using the mobile communication terminal 40 and selects a desired video file in the selected shared folder, the terminal 10 configures the selected video file. Image frames, which are video sources, are transmitted to the image server 20.

In this case, the terminal 10 checks the type of the mobile communication terminal and checks the display size information according to the type of the mobile communication terminal to recognize the display size according to the type of the mobile communication terminal 40 connected by the direct communication.

The terminal 10 changes the display size of the image frames to a size optimized for the screen of the recognized mobile communication terminal 40 and transmits the size to the image server 20. In addition, the terminal 10 may invert or rotate the image frames, and transmit the inverted or rotated image frames to the image server 20.

Accordingly, the image server 20 receives the image frames from the terminal 10 and adjusts the transmission time intervals of the received image frames in the order for playing the video, thereby moving through the service server unit 30. Transmit to communication terminal 40.

In detail, the image server 20 transmits the image frames received from the terminal 10 to the mobile communication terminal 40 in order to adjust the transmission time interval of the image frames. The transmission time is recorded in the data header of the frame and transmitted to the mobile communication terminal 40 at predetermined time intervals. In this case, the predetermined time interval is preset to such a degree (for example, about 1 second) that the video communication frame is displayed on the mobile communication terminal 40 without difficulty.

Accordingly, the mobile communication terminal 40 receives a video frame from the video server 20, generates a response message including the data header of the received video frame, and receives the video frame in the data header included in the generated response message. The time is additionally recorded and the response message including the data header of which the corresponding reception time is additionally recorded is transmitted to the video server 20.

In other words, as soon as the mobile communication terminal 40 receives the video frame including the data header in which the transmission time is recorded from the video server 20, the mobile communication terminal 40 additionally records the reception time in the corresponding data header. A response message including a data header in which a reception time is recorded is generated and transmitted to the video server 20.

Then, the video server 20 receives the response message from the mobile communication terminal 40 and calculates a difference between the transmission time and the reception time recorded in the data header of the received response message to the size of the calculated value. Accordingly, after receiving the corresponding response message, the video frame to be transmitted to the mobile communication terminal 40 is transmitted to the mobile communication terminal 40 by increasing or decreasing the transmission time interval.

For example, when the difference between the calculated transmission time and the reception time decreases, the image server 20 increases the transmission time interval of the image frame, and when the difference between the transmission time and the reception time increases. The transmission time interval is adjusted by reducing the transmission time interval of the video frame.

In addition, when the difference between the transmission time and the reception time of the video frame exceeds the reference value, the video server 20 stops the transmission of the video frame, and if the transmission time interval of the video frame falls below the reference value, Transmission of the video frame is started. Here, the reference value refers to a difference value (for example, 5 seconds) between the transmission time and the reception time due to the decrease in the communication network data transmission speed such that the moving image reproduced in the mobile communication terminal 40 is stopped.

For this reason, the mobile communication terminal 40 may receive a video frame in progress if the communication network improves even if the communication network improves due to poor communication network conditions.

As described above, the mobile communication terminal 40 receives an image frame from the terminal 10 through the video server 20, the service server unit 30, and the mobile communication service provider 50. Play the video file by displaying the frame on the screen.

The mobile communication terminal 40 stores, deletes, captures, stores, bookmarks, and edits the video file stored in the terminal 10 through the service server unit 30 and the mobile communication service provider 50. 10) the video content management functions such as retransmission and transmission to other mobile communication terminals are performed remotely.

Alternatively, when a user requests a video file search using a keyword when searching for a desired video file using the mobile communication terminal 40, the mobile communication terminal 40 searches for a keyword to search for a video file. A window is displayed on the screen of the mobile communication terminal 40.

Accordingly, when a user inputs a keyword of a desired video file by using a key button (not shown) of the mobile communication terminal 40 and then presses a search button to request a video file search, the mobile communication terminal 40 A video file keyword search request signal including the keyword information received from the user is generated and transmitted to the KID server 33 through the mobile communication provider 50 and the MCS 34.

Accordingly, the KID server 33 receives the video file keyword search request signal from the mobile communication terminal 40, and the video file keyword information for each terminal information corresponding to the keyword information included in the received video file keyword search request signal. Search internally to transmit the searched video file keyword list information to the mobile communication terminal 40 through the MCS 34 and the mobile communication subscriber 40. Here, the video file keyword list information includes information on the terminal IP address of each terminal.

Accordingly, the mobile communication terminal 40 receives a video file keyword list corresponding to the keyword entered in the keyword search window from the KID 33 and displays it on the screen.

Accordingly, when the user checks the video file keyword list displayed on the mobile communication terminal 40 and selects a desired video file using a selection key button (not shown in the figure for convenience of description), the mobile communication terminal 40 In order to access the terminal 10 in which the selected video file is stored, a terminal access request signal is generated and transmitted to the ACS 31 through the mobile communication service provider 50 and the MCS 34. The terminal access request signal includes the terminal IP address of the selected terminal 10. It should be understood that the terminal IP address included in the video file keyword list information received from the KID server 33 is included in the terminal access request signal.

Accordingly, the ACS 31 receives the terminal access request signal from the mobile communication terminal 40 and checks the terminal IP address included in the received terminal access request signal, and the terminal corresponding to the confirmed terminal IP address. The mobile communication terminal 40 is connected to (10).

Here, the ACS 31 connects the selected terminal 10 to the mobile communication terminal 40 directly through the MCS 34. For example, they are connected by a point-to-point protocol.

Accordingly, the terminal 10 checks the mobile communication terminal information of the mobile communication terminal 40 connected by the direct communication to determine whether the mobile communication terminal 40 corresponds to the public range of the shared folder stored therein. .

Here, it should be understood that the disclosure range of the shared folder is preset by using the telephone number of the mobile communication terminal allowing sharing. For example, only a mobile communication terminal having a phone number that matches the phone number set in the shared folder can access the shared folder and check the video file in the connected shared folder.

In this case, when the mobile communication terminal 40 corresponds to the disclosure range of the shared folder, the terminal 10 allows the mobile communication terminal 40 to access the shared folder and transfers the selected video file to the mobile communication. Provided to the terminal 40.

In detail, the terminal 10 transmits image frames, which are video sources constituting the selected video file, to the video server 20.

In this case, the terminal 10 checks the type of the mobile communication terminal, checks the display size information accordingly, and recognizes the display size according to the type of the mobile communication terminal 40 connected by the direct communication.

The terminal 10 changes the display size of the image frames to a size optimized for the screen of the recognized mobile communication terminal 40 and transmits the size to the image server 20.

Accordingly, the image server 20 receives the image frames from the terminal 10 and adjusts the transmission time intervals of the received image frames in the order for playing the video, thereby moving through the service server unit 30. Transmit to communication terminal 40.

Specifically, the video server 20 transmits the video frame received from the terminal 10 to the mobile communication terminal 40 so as to adjust the transmission time interval of the video frames. The transmission time is recorded in the data header of the frame and transmitted to the mobile communication terminal 40 at a predetermined transmission interval. In this case, the predetermined transmission interval is preset to such a degree that the mobile communication terminal 40 displays a video frame to play a video without difficulty (for example, about 1 second).

Accordingly, the mobile communication terminal 40 receives a video frame from the video server 20, generates a response message including the data header of the received video frame, and receives the video frame in the data header included in the generated response message. The time is additionally recorded and a response message including a data header in which the corresponding reception time is additionally recorded is transmitted to the video server 20.

That is, as soon as the mobile communication terminal 40 receives an image frame including a data header with a transmission time recorded from the video server 20, the mobile communication terminal 40 additionally records the reception time in the corresponding data header. A response message including a data header recorded with time is generated and transmitted to the video server 20.

Then, the video server 20 receives the response message from the mobile communication terminal 40 and calculates a difference between the transmission time and the reception time recorded in the data header of the received response message to the size of the calculated value. Accordingly, after receiving the response message, the transmission time interval of the video frame to be transmitted to the mobile communication terminal 40 is increased or decreased.

If the image server 20 increases the transmission time interval of the image frame when the difference between the calculated transmission time and the reception time decreases, and the difference between the transmission time and the reception time increases, Reduce the transmission time interval of the video frame.

In addition, when the difference between the transmission time and the reception time of the video frame exceeds the reference value, the video server 20 stops the transmission of the video frame, and if the transmission time interval of the video frame falls below the reference value, Transmission of the video frame is started. Here, the reference value is a difference between the transmission time and the reception time caused by the transmission of the video frame from the video server 20 to the extent that the video played back on the mobile communication terminal 40 is stopped due to an abnormality in the communication network ( For example, 5 seconds).

For this reason, the mobile communication terminal 40 may receive a video frame that has been stopped because the communication network is not good and the communication is good again even if the video is stopped.

As described above, the mobile communication terminal 40 receives an image frame from the terminal 10 through the video server 20, the service server unit 30, and the mobile communication service provider 50. Play the video file by displaying the frame on the screen.

In addition, the mobile communication terminal 40 stores, deletes, captures, stores, bookmarks, edits, and stores the video file stored in the terminal 10 through the service server unit 30 and the mobile communication service provider 50. 10) the video content management functions such as retransmission and transmission to other mobile communication terminals are performed remotely.

According to the present invention as described above, when playing a video file stored in the terminal remotely using a mobile communication terminal, the transmission time interval of the video frames transmitted from the video server is adjusted according to the delay time according to the communication network environment By doing so, there is an effect of stably playing the video in the mobile communication terminal.

Claims (9)

A plurality of terminals storing video files in a communication network; A video server for adjusting a transmission time interval of each of video frames constituting a video file stored in the plurality of terminals; A mobile communication terminal connected to one of the plurality of terminals and receiving image frames constituting a video file stored in the connected terminal through the video server and displaying the video frames on a screen; And a service server unit for connecting the mobile communication terminal to one of the plurality of terminals. The method of claim 1, In the communication network, the video server records a transmission time in a data header of each video frame to be transmitted and transmits it to the mobile communication terminal at a predetermined time interval in order to adjust the transmission time interval of the video frames. Video content service system. The method of claim 2, The mobile communication terminal generates a response message including a data header of the received video frame each time a video frame is received from the video server, and then receives a video frame reception time in the data header included in the generated response message. And recording a response message and transmitting a response message including a data header in which a corresponding reception time is additionally recorded to the video server. The method of claim 3, When the video server receives the response message from the mobile communication terminal, the video server calculates a difference between the transmission time and the reception time recorded in the data header of the received response message, and transmits the time interval of the next video frame to be transmitted according to its size. Video content service system in a communication network, characterized in that for increasing or decreasing. The method of claim 3, When the video server receives the response message from the mobile communication terminal, the video server calculates a difference between the transmission time and the reception time recorded in the data header of the received response message, and presets the difference between the calculated transmission time and the reception time. Checking whether the reference value is exceeded and stopping the transmission of the video frame when the reference value is exceeded, and when the reference value is lower than the reference value, starting the transmission of the video frame. In the video content service method in a communication network, Accessing one of a plurality of terminals in which a video file is stored through a service server in a mobile communication terminal; Transmitting, by the connected terminal, a video file stored in response to a video file transmission request of the mobile communication terminal to an image server; Receiving a video file from the terminal at the video server and transmitting video frames constituting the received video file to a mobile communication terminal by adjusting a transmission time interval; And receiving the video frames from the video server at the mobile communication terminal and displaying the video frames on a screen to play a video. The method of claim 6, The process of accessing one of the plurality of terminals includes: accessing the service server using its own terminal information from each of the plurality of terminals; Accessing the service server by using the mobile communication terminal information of the mobile communication terminal; Searching for an accessible terminal by searching for terminal information of each of the plurality of terminals connected to the service server in the mobile communication terminal, and requesting access to the found accessible terminal; And connecting the mobile communication terminal and the terminal requesting the connection according to the connection request of the mobile communication terminal in the service server. The method of claim 6, In the transmitting of the mobile communication terminal, the video server records a transmission time in a data header of each video frame to be transmitted and adjusts the transmission time interval of the video frames to the mobile communication terminal at a predetermined time interval. Transmitting; Generating a response message including the data header of the received video frame each time the mobile communication terminal receives the video frame from the video server; The mobile communication terminal additionally records a reception time of the video frame in a data header included in the generated response message, and transmits a response message including a data header in which the corresponding reception time is additionally recorded to the video server. Making a step; When the video server receives the response message from the mobile communication terminal, it calculates the difference between the transmission time and the reception time recorded in the data header of the received response message and determines the transmission time interval of the next image frame to be transmitted according to the size. And increasing or decreasing the video content service method in a communication network. The method of claim 8, When the video server receives the response message from the mobile communication terminal, a difference between the calculated transmission time and the reception time is calculated by calculating a difference between the transmission time and the reception time recorded in the data header of the received response message. Checking whether it exceeds; Stopping transmission of the image frame when the reference value is exceeded; If the reference value is less than the video content service method in a communication network, characterized in that it further comprises the step of starting the transmission of the video frame.

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