KR100693701B1 - Method for classifying application for data broadcasting in time-shift and application synchronization method thereof - Google Patents

Abstract

The present invention can synchronize the application of the time-shifted playback screen according to whether the application of the playback screen through the time shift is linked or independent and whether the application of the screen broadcast on the current broadcast channel is independent or linked. To this end, the present invention, when executing the playback mode of the previous screen temporarily recorded through the time shift function, fixedly provide any one of the application of the screen currently being broadcast or the application of the screen being played with time shift. Unlike the method, it is determined whether the application of the screen played through the time shift is linked or standalone, and whether the application of the screen broadcast on the current broadcast channel during the time shift is independent or linked. Based on the results By temporary soft reproduction applied to a selective interlocking type or stand-alone application screen, which will only be able to enhance the time-shift utilization convenience of users as possible to reliably meet the various needs of the users.

Description

Classification method of data broadcasting application for time shift and application synchronization control method using the same {METHOD FOR CLASSIFYING APPLICATION FOR DATA BROADCASTING IN TIME-SHIFT AND APPLICATION SYNCHRONIZATION METHOD THEREOF}

1 is a block diagram of a broadcast receiving system suitable for classifying a data broadcasting application and applying a technique for controlling synchronization of the data broadcasting application using the same during a playback mode through time shift.

2 is a flowchart illustrating a process of determining and registering whether an application is a standalone application by extracting an application name from a broadcast signal currently being broadcast according to the present invention;

3 is a flowchart illustrating a process of adaptively applying a data broadcasting application when executing a playback mode through time shift according to the present invention;

4 is a flowchart illustrating a process of adaptively performing a connection to a return channel when executing a playback mode through time shift according to the present invention.

<Description of the code | symbol about the principal part of drawing>

102 control block 104 tuner, demodulation block

106: decoding block 108: storage medium

110: menu generation block 112: broadcast signal processing block

114: interface block

The present invention relates to an adaptive technique for data broadcasting applications. More particularly, the present invention relates to a time shift suitable for selectively synchronizing a standalone application or a linked application of data broadcasting when executing a time shift play mode using a device such as a set-top box. The present invention relates to a data broadcasting application classification method and an application synchronization control method using the same.

As is well known, broadcast receivers that receive and play digital broadcasts, such as set-top boxes, PVRs, and the like, support timeshifting to enhance user convenience. When a broadcast of an arbitrary channel is broadcasted through a broadcast receiver, this means storing a predetermined amount of broadcast programs on a storage medium (for example, a hard disk driver). The purpose of storing a predetermined amount of broadcast programs broadcast through the time shift function is to allow users to view previous screens again by using a function such as pause and rewind.

On the other hand, the application for data broadcasting is divided into a linked application and a stand-alone application, wherein the linked application is information related to the currently broadcast program (for example, drama information, drama props related / purchasing information, performer's costume related / purchasing information) Etc.), and the standalone application provides a function of displaying information (eg, news information, stock information, exchange rate information, weather information, etc.) that is not related to the currently broadcast program.

Here, the data broadcasting application provides a return channel (or internet data channel) service to enable mutual communication between a user (or a data broadcasting receiver) and a broadcasting station. That is, the return channel is a channel for data communication between a user and a broadcasting station server (or a data content server) when providing a bidirectional data broadcasting service. In this case, the return channel is a different server depending on the type of standalone or linked application. Is implemented via:

Therefore, users (or viewers) can use the return channel service to check profiles of characters, favorite singers, and favorite players while watching a movie program, a show program, a sports program, or a viewer participation program. While watching, they may be provided with services such as participating in the program directly or purchasing items appearing in the program.

On the other hand, users can be provided with a playback service of previously broadcast programs through a time shift function that supports a pause mode, a rewind mode, and the like while watching any broadcast program through a broadcast receiver. When the play mode of the previous program is executed through the function, the data broadcast application applies the application of the screen currently being broadcast on the corresponding broadcast channel or the application of the broadcast screen played through time shift. That is, conventionally, a method of fixing and providing an application of a currently playing screen or an application of a screen being played through a time shift is provided.

However, when the program playback mode is executed through the time shift function, there is a problem in that one application is fixedly provided as described above.

First, when based on the screen that is time-shifted (that is, when applying the application to the screen in the playback mode using the time shift function), the application of the screen that the user is watching through the playback mode is linked. Assuming that the application of the screen being broadcast on the currently tuned broadcasting channel is standalone, the return channel for the linked application of the screen currently being watched by the user is closed because the application of the screen currently being broadcast is standalone (that is, the broadcasting station side). Will not be able to connect to the server).

In such a situation, if the user attempts to connect to the return channel for bidirectional data communication, the connection to the return channel will fail because the return channel is already closed. In this case, because the user is not connected to the return channel, some functions of the broadcast receiver will be misunderstood. This user misunderstanding may occur because the application of the screen currently being played through the time shift function is linked. Of course, when the user attempts to access the return channel, if the application of the screen currently being broadcast through the corresponding broadcast channel is linked, the above problem (failed to return to the return channel, misunderstanding of user failure, etc.) will not occur. .

Second, based on the time-shifted screen, if the application of the screen being viewed by the user through the playback mode is standalone and the application of the screen being broadcast on the currently tuned broadcasting channel is linked, Because the application of is linked, the return channel for the standalone application of the screen being watched will be in a closed state (ie, accessible to a broadcasting station server). In this case, too, as in the first case, a user may misunderstand that a failure of a connection to a return channel is a function of a broadcast receiver.

Third, based on the time-shifting screen, if the application of the screen being viewed by the user through the playback mode is standalone and the application of the screen being broadcast on the currently tuned broadcasting channel is also standalone, the standalone application is the broadcast screen. Since the latest information such as news is provided regardless of the content, the user can only use the previous information as much as the time rewinding the screen through the time shift function. This results in a result that the user does not come in contact with the latest information of the broadcasting information that is currently being broadcast, and this result will act as a factor causing the user's service dissatisfaction.

Fourth, when based on the application of the screen currently being broadcast (that is, when applying the application for the screen currently being broadcast), there is a problem that the user can not use the linked application for the screen currently being watched In addition, the linked application that has nothing to do with the time-shifted view is executed, that is, awkward problem that cannot be utilized because the provided application is not synchronized with the screen that the user is watching. In addition, such a problem is in fact acting as a factor that lowers the convenience of users.

Accordingly, the present invention is to solve the above problems of the prior art, and whether the application of the playback screen through the time shift is interlocked or stand-alone, and whether the application of the screen broadcast on the current broadcast channel is independent or interlocked It is an object of the present invention to provide a method for classifying data broadcasting applications for time shifting which can synchronize applications of a time shift reproduction screen and an application synchronization control method using the same.

According to an aspect of the present invention, there is provided a method of classifying applications of a broadcast program broadcast by a broadcast receiver supporting a time shift function, wherein the application name is changed whenever a broadcast program broadcast on a broadcast channel is changed. Extracting, checking whether the extracted application name is a name registered in a standalone application candidate list, registering when the extracted application name is an unregistered name in the candidate list, and registering in the candidate list; When the extracted application name is a name registered in the candidate list, checking and updating application identifier information of the extracted application name, and checking the updated application identifier information to set a preset standalone application classification condition. To meet And classifying and storing an application name whose application identifier information is updated as a standalone application group when the classification condition is satisfied, and storing the classified application name into a standalone application group. .

According to another aspect of the present invention, there is provided a method of synchronizing a data broadcasting application when executing a time shift play mode in a broadcast receiver supporting a time shift function, wherein the broadcast receiver performs time during the viewing mode. A first step of checking whether to select a shift play mode, a second step of checking whether an application of a broadcast program to be time-shifted is independent or linked when the time shift play mode is selected, and A third process of applying the application of the reproduction broadcast program to a time shift reproduction screen when the reproduction broadcast program is a linked application; and an application of the current broadcast program broadcast on the current broadcast channel when the reproduction broadcast program is a standalone application; Is this standalone or A fourth process of checking whether the linked broadcast type is interoperable, a fifth process of applying an application of the reproduced broadcast program to the time shift play screen when the current broadcast program is a linked type application, and the current broadcast program is independent When the application, it provides a synchronization control method for a data broadcast application for a time shift comprising a sixth step of applying the application of the current broadcast program to the time-shift playback screen.

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A key technical aspect of the present invention is to provide a fixed one of an application of a screen currently being broadcast or an application of a screen being played with time shift when executing a playback mode of a previous screen temporarily recorded through a time shift function. Unlike the conventional method, it is determined whether the application of the screen reproduced through time shift is interlocked or independent, and whether the application of the screen aired on the current broadcast channel during the time shift is independent or interlocked. By selectively applying a linked or standalone application to the timeshift playback screen based on the determination result, it is easy to achieve the object of the present invention through such technical means.

FIG. 1 is a block diagram of a broadcast receiving system suitable for classifying a data broadcasting application and applying a technique for controlling synchronization of the data broadcasting application by using the same during a time-shifted playback mode. ), Tuner and demodulation block 104, decoding block 106, storage medium 108, menu generation block 110, broadcast signal processing block 112, and interface block 114.

Referring to FIG. 1, the control block 102 performs overall operation control of a broadcast receiver including a microprocessor, for example, and generates a broadcast channel tuning control signal through a line L11 for such operation control. Control the storage and withdrawal of the broadcast signal transmitted from the tuner and demodulation block 104 to the storage medium 108 via the line L13 for the time shift function, and bidirectionally through the line L17 in response to a user operation signal. Controls connection to a return channel for data communication.

Next, the tuner and demodulation block 104, when provided with a tuning control signal from the control block 102 via line L11, responds to any one of a plurality of broadcast channels received via an antenna (not shown) in response thereto. By tuning, it extracts packet information of additional information (i.e., channel information, program guide information, program related information, etc.) inserted on the transport stream, and converts and demodulates the extracted additional information packet data into an intermediate frequency. And after restoring to a transport stream through error correction and the like, passing it to the control block 102 through the line L12, and processing demodulation and error correction on the broadcast signal packet data of the selected channel extracted from the transport stream. It then passes to line L13 to decoding block 106 and storage medium 108. In this case, the broadcast signal transmitted to the storage medium 108 is temporarily stored for a predetermined time for user service (time shift service) such as previous video search, backward playback, slow playback, and the like. Temporary storage is performed by the time shift function.

Meanwhile, in response to the decoding control signal provided from the control block 102, the decoding block 106 selects, for example, a variable length of a compressed coded broadcast signal (broadcast program signal) of a specific channel provided through the line L13. The decoding is performed using a decoding technique such as decoding, inverse DCT, inverse quantization, motion compensation, etc., and the restored broadcast signal is transmitted to the broadcast signal processing block 112 through the line L14.

Further, in the decoding block 106, when performing a reproduction mode other than the broadcast viewing mode (i.e., the mode for reproducing the broadcast signal stored in the storage medium through the time shift function or the like), according to the control of the control block 102. The compressed and compressed broadcast signal from the storage medium 108 is restored to the original signal before encoding and transmitted to the broadcast signal processing block 112 through the line L14.

Next, the storage medium 108 is, for example, a hard disk drive (HDD) or the like. The storage medium 108 stores a broadcast signal (compression-coded broadcast program data) requested by the user for recording, or a broadcast signal for a time shift function. Stand-alone information such as application name and candidate application name that are stored or classified as stand-alone, and related information (eg, frequency count information, broadcast day frequency count information, broadcast time information, AM / PM broadcast information) Application identifier information).

In addition, the menu generation block 110 generates a corresponding menu screen (menu screen used for bidirectional data communication, etc.) by using various menu data provided from the control block 102 when an interface request from a user is requested. The menu screen data generated here is transferred to the broadcast signal processing block 112 through the line L15.

On the other hand, the broadcast signal processing block 112 transmits the broadcast signal on the line L14 to the TV side, which is not shown, in response to the signal processing switching control signal provided from the control block 102 through the line L16, or the line L14. And mix (combine) the signals on the L15 and transmit them to the TV side, not shown.

In addition, the interface block 114 includes, for example, a modem, a LAN card, or the like in which a program that can access the Internet is embedded, and the control block 104 and the illustration are omitted to provide an additional service in bidirectional data broadcasting. Performs an interface function between the broadcast station server or the data content server.

Therefore, users (viewers) can play the programs previously broadcasted by using the time shift function while watching any broadcast program or bidirectionally as needed through a connection through a return channel when the linked application screen is being displayed. Additional services may be provided.

Next, a process of adaptively selecting and applying a standalone or linked application while executing a time shift according to the present invention using a broadcast receiver having the above-described configuration will be described.

2 is a flowchart illustrating a process of determining whether or not an application is a standalone application by extracting an application name from a broadcast signal currently being broadcast according to the present invention.

Referring to FIG. 2, the control block 102 extracts an application name of a corresponding broadcast program screen whenever a broadcast program screen is changed while performing a viewing mode in which an arbitrary broadcast channel is tuned and aired (step 202). (Step 204). That is, the control block 102 extracts the application name whenever the broadcast program broadcasted on the corresponding broadcast channel is changed.

Next, the control block 102 searches the storage medium 108 to check whether the application name of the newly extracted broadcast program screen is registered in the candidate list for checking whether the application name is a standalone application (step 206). If the newly extracted application name is an unregistered application, the application name is registered in the candidate list (that is, stored in the corresponding area of the storage medium 108) (step 208).

As a result of the check in the step 206, if the extracted application name is a name already registered in the candidate list, the control block 102 counts the relevant item information and the application for the corresponding application name stored in the storage medium 108. The delimiter information is updated (step 210). That is, item information such as broadcasting frequency count information, broadcasting day frequency count information, broadcasting time information, and AM / PM broadcasting information about the application name is checked and updated.

Next, the control block 102 updates the application identifier information of the corresponding application name and then checks the relevant condition information again to check whether the application name satisfies a condition that can be classified as a standalone application (step 212). ), The update of the application identifier information and the classification check to the standalone application are repeatedly performed whenever the already registered application name is extracted.

For example, two or more conditions or three or more conditions such as a daily frequency of three or more times, a broadcasting day of five or more days of the week, a broadcasting time of more than a preset time, or both of AM / PM. Include the information and check whether the application name is a standalone application or a linked application by classifying the application name as a standalone application when at least two or more of the condition information satisfy the preset condition. You can do it.

As a result of the check in step 212, when the standalone application classification condition is satisfied, the control block 102 classifies the application name into the standalone application group and stores the corresponding space in the storage medium 108 (that is, the standalone application group storage). Space) (step 214).

Therefore, according to the present invention, it is determined whether the broadcast program broadcasted through the above-described series of processes is a standalone application or a linked application and classified into a standalone group or a linked group. That is, only the application name registered as a standalone application is divided into a standalone application group, and other application names are classified into a linked application group.

Next, a process of selectively applying a data broadcast application when executing a playback mode through time shift using application group information in which each application name is classified into an independent group or a linked group according to the present invention will be described.

3 is a flowchart illustrating a process of adaptively applying a data transmission application when executing a playback mode through time shift according to the present invention.

Referring to FIG. 3, the control block 102 checks whether the user selects a playback mode using the time shift function while performing a viewing mode in which an arbitrary broadcast channel is tuned and aired (step 302). Step 304). Here, the playback mode using the time shift function means a mode of extracting and playing back a broadcast program previously broadcasted and recorded on the storage medium 108 using a rewind mode or the like.

If it is determined in the step 304 that the user has selected time-shift playback, the control block 102 searches for a standalone application group stored in the storage medium 108 to determine the playback-selected recorded broadcast program. It is checked whether the application is a standalone application or a linked application (step 306).

As a result of the check in the step 306, if the application of the playback-selected recorded broadcast program is a linked application, the control block 102 applies the linked application of the time shift screen to the played broadcast program (310). At this time, the control block 102 records the application status plug as a linked application. In addition, since the linked application of the time shift screen is applied, the return channel for bidirectional data communication is kept open (that is, the communication connection to the remote broadcasting station server).

Accordingly, users can freely realize a connection to a remote broadcasting station server, not shown, through a return channel for bidirectional data communication to receive various supplementary services whenever they want while watching a reproduction program to which a linked application is applied. There will be.

On the other hand, when the check result in step 306 indicates that the application of the reproduced and selected recorded broadcast program is a standalone application, the control block 102 searches for a standalone application group registered in the storage medium 108 and is currently broadcast. It is checked whether the application of the broadcast program is standalone or linked (step 308).

As a result of the check in step 308, if the currently broadcast program is a linked application, the process proceeds to step 310, and as a result, the same application is applied as above, i.e., the application of the time shift screen (linked application). ) Is applied. At this time, the control block 102 also records the application state plug as a linked application.

As a result of the check in step 308, if the currently broadcast program is a standalone application, the control block 102 displays the application of the currently broadcast program, although the playback broadcast program through the time shift function is displayed on the monitor. (Ie, standalone application) is applied (step 312). At this time, the control block 102 records the application state plug as a standalone application.

Therefore, according to the time-shifted application synchronization scheme of the present invention, when performing a playback mode for a recorded broadcast program that is a standalone application, the application of the current broadcast program broadcasted on the current broadcast channel is linked or independent. By changing the status plug, the application of the time shift screen or the application of the current broadcast program is selectively applied to the time shift playback screen.

That is, the current broadcast program is continuously monitored when the broadcast program to be time-shifted is independent, and if the current broadcast program is linked, the application of the time shift screen (interlocked application) is kept as it is. The application of the time shift screen is synchronized by changing to an application of the program (standalone application), and such application synchronization is repeatedly performed whenever the current broadcast program is changed. Of course, the above processes (steps 306 to 312) will be repeatedly performed even when the time shift reproduced broadcast program is changed.

As a result, users (viewers) can receive the latest information (for example, news information, stock information, exchange rate information, weather information, etc.) in real time through the provision of an application synchronized to the broadcast program currently being broadcast, thereby It can effectively meet various service needs of users.

On the other hand, when performing the time-shifted playback mode according to the present invention, users may attempt to connect to the return channel for bidirectional data communication, which is adaptively performed when attempting to connect to the return channel. Explain the process.

4 is a flowchart illustrating a process of adaptively performing a connection to a return channel when executing a reproduction mode through time shift according to the present invention.

Referring to Fig. 4, while executing the time shift play mode according to the user's selection operation (step 402), the control block 102 checks whether the user requests a connection to a return channel for bidirectional data communication. (Step 404), if it is determined that the connection request to the return channel is requested, the control block 102 checks the application status plug to determine whether the application on the timeshift playback screen is linked or independent. Check (step 406).

As a result of the check in step 406, when the application of the time shift playback screen is standalone, the control block 102 checks the application status plug to determine whether the current broadcast program application of the current broadcast channel is linked or standalone. Check (step 408).

As a result of checking in the step 408, when the application of the current broadcast program is linked, the control block 102 generates a guide message indicating that the return channel service for bidirectional data communication is not available, thereby generating the menu block 110. Is transmitted to the monitor side (not shown) (step 410).

Therefore, the user can use the return channel service through the unavailable message displayed on the television monitor because the application of the broadcast program of the current broadcast channel is linked, and the application being viewed on the screen is not currently serving. You will notice that none.

Further, as a result of the check in the step 408, when the application of the current broadcast program is standalone (i.e., both the time shift playback screen and the application of the current broadcast program are standalone), the control block 102 determines the interface block ( A connection to the return channel through 114 is provided to provide a bidirectional data service to the user (step 412).

Accordingly, the user can be provided with the bidirectional data communication service desired by the remote broadcasting station server through the return channel.

On the other hand, as a result of the check in step 406, when the application of the time shift playback screen is linked, the control block 102 checks the application status plug to determine whether the current broadcast program application of the current broadcast channel is linked or independent. Is checked (step 414).

As a result of the check in the step 414, when the application of the current broadcast program is stand-alone, the control block 102 generates a warning message indicating that it is impossible to connect to the return channel for bidirectional data communication. Pass to the monitor side (not shown) (step 416).

Accordingly, the user can recognize that the connection to the return channel is impossible because the broadcast program application of the current broadcast channel is independent through the disconnection warning message displayed on the television monitor.

As a result of the check in the step 414, when the application of the current broadcast program is the same as the time-shift playback screen, the control block 102 moves to the current broadcast to use the return channel service for bidirectional data communication (i.e., A message containing a recommendation to suspend or interrupt the time shift play mode or move to the most recent screen is generated and transmitted to the monitor side (not shown) through the menu generation block 110 (step 418). The user selects whether to continue using the service or stops once and moves to the current broadcast, that is, waits for user selection (step 420). At this time, if the user wants to proceed, the user accesses the return channel through the interface block 114 to provide the bidirectional data service to the user (step 422).

Accordingly, the user can be provided with the bidirectional data communication service desired by the user through the connection with the remote broadcasting station server through the return channel.

That is, based on the guidance service provided through the above-described process, the users can access the return channel in the current situation of performing the time-shifted playback mode, and the reason why the access to the return channel is impossible. It is possible to clearly recognize the user, thereby undoing the user's misunderstanding such as malfunction of the broadcast receiver due to the inability to connect to the return channel.

In the above description has been described by presenting a preferred embodiment of the present invention, but the present invention is not necessarily limited to this, and those skilled in the art to which the present invention pertains within a range without departing from the technical spirit of the present invention It will be readily understood that branch substitutions, modifications and variations are possible.

As described above, according to the present invention, when executing the playback mode of the previous screen temporarily recorded through the time shift function, it is fixed to provide either the application of the screen currently being broadcast or the application of the screen being played with time shift. Unlike the conventional method, it is determined whether the application of the screen reproduced through time shift is interlocked or independent, and whether the application of the screen aired on the current broadcast channel during the time shift is independent or interlocked. By selectively applying a linked or standalone application to the timeshift playback screen based on the determination result, it is possible not only to enhance user convenience of timeshift use but also to satisfy various service needs of users.

Claims (9)

A method of classifying an application of a broadcast program broadcasted by a broadcast receiver supporting a time shift function, Extracting the application name whenever the broadcast program broadcasted on the broadcast channel changes; Checking whether the extracted application name is a name registered in a standalone application candidate list; When the extracted application name is a name not registered in the candidate list, registering the candidate list with the candidate list; Checking and updating application identifier information of the extracted application name when the extracted application name is a name registered in the candidate list; Checking whether the updated application identifier information is satisfied to satisfy a preset standalone application classification condition; Classifying and storing the updated application name as a standalone application group when the classification condition is satisfied; And a data broadcast application classification method for time shifting. The method of claim 1, The application identifier information, data broadcasting application classification method for a time shift, characterized in that it comprises at least two or more information of the daily broadcast frequency information, broadcast day information of the week, broadcast time information, AM / PM broadcast information. The method of claim 1, The method includes at least three or more pieces of information of daily broadcasting frequency information, weekly broadcasting day information, broadcasting time information, AM / PM broadcasting information, and at least two or more of the three pieces of information included in the preset condition. When satisfying, the method of classifying data broadcast applications for time shifting, wherein the corresponding application names are classified and stored as the standalone application group. A method of synchronizing a data broadcast application when executing a time shift play mode in a broadcast receiver supporting a time shift function, A first step of checking whether the broadcast receiver selects a time shift play mode while performing the watch mode; A second process of checking whether the application of the broadcast program to be time-shifted is independent or linked when the time-shifted playback mode is selected; A third process of applying an application of the reproduction broadcast program to a time shift reproduction screen when the reproduction broadcast program is a linked application; A fourth process of checking whether the application of the current broadcast program broadcast in the current broadcast channel is independent or linked when the playback broadcast program is a standalone application; A fifth process of applying an application of the reproduction broadcast program to the time shift reproduction screen when the current broadcast program is a linked application; A sixth process of applying the application of the current broadcast program to the time shift play screen when the current broadcast program is a standalone application; Synchronization control method of a data broadcast application for a time shift comprising a. The method of claim 4, wherein The method may further include recording, as an application status plug, whether an application applied to the time shift play screen is a linked application or a standalone application each time the application is applied. Synchronization control method of a broadcast application. The method of claim 4, wherein The method may further include repeating the second to sixth steps every time the time shift reproduction broadcast program is changed, the synchronization control method of the data broadcast application for time shifting. The method of claim 4, wherein The method may further include repeating the fourth to sixth steps each time the current broadcast program is changed, the synchronization control method of the data broadcast application for time shifting. The method according to any one of claims 4 to 7, The method, A seventh step of checking whether there is a connection request to a return channel while executing the time shift play mode; An eighth step of checking whether an application of the playback broadcast program and an application of the current broadcast program are independent or linked when there is a request for access to the return channel; A ninth process of generating a guide message indicating that the return channel is unavailable when the application of the reproduction broadcast program is independent and the application of the current broadcast program is linked; A tenth process of providing an access service to the return channel when both the application of the reproduction broadcast program and the application of the current broadcast program are independent; An eleventh step of generating a warning message indicating that connection to the return channel is impossible when the application of the reproduction broadcast program is linked and the application of the current broadcast program is independent; When the application of the reproduction broadcast program and the application of the current broadcast program is linked, the twelfth process of generating a message recommending to move to the current broadcast channel to provide to the monitor Synchronization control method of a data broadcast application for a time shift further comprising. The method of claim 8, The method, When the movement to the current broadcast channel is selected, further comprising the step of pausing or stopping the time shift playback mode, and then moving to the current broadcast channel to provide a connection service to the return channel. Method of controlling synchronization of data broadcasting application for time shift.

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