KR100857992B1 - System and method for satellite dmb broadcasting signal selecting play, terminal for broadcasting signal selecting play - Google Patents

Abstract

 The present invention discloses a satellite DMB signal selective playback system for implementing a temporary delay and selective playback function for a DMB broadcast signal provided in a streaming method. That is, the satellite DMB broadcasting center divides the DMMB broadcasting program provided from the program provider into image data, audio data, and caption data, and configures each frame based on the individual synchronization information of the separated data and transmits it to the satellite; And receiving a DMB broadcasting signal transmitted from the satellite, and separating the received DMMB broadcasting signal into the image data, audio data, and subtitle data based on the individual synchronization information, and storing the received DMMB broadcasting signal for a predetermined time. And a DM receiver receiving and reproducing a predetermined number of times, thereby enabling temporary viewing of unviewed contents, and by separating video, audio, and text of the unviewed contents, allowing the user to select only desired data. Selective reproduction can be performed, and the reproduction time can be shortened during data reproduction by deleting null data from the separated data.

Satellite DMB, Image Storage

Description

Satellite DMB signal selective playback system and method, broadcast signal selective playback terminal {SYSTEM AND METHOD FOR SATELLITE DMB BROADCASTING SIGNAL SELECTING PLAY, TERMINAL FOR BROADCASTING SIGNAL SELECTING PLAY}

The following drawings, which are attached in this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.

1 is a schematic configuration diagram of a satellite DMB signal selection and reproduction system according to an embodiment of the present invention.

2 is a schematic configuration diagram of a DM receiver according to an embodiment of the present invention.

3 is a schematic structural diagram of a DMB playback controller according to an embodiment of the present invention;

4 is a schematic diagram illustrating a satellite DMB signal selection and reproduction method according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: program provider 2OO: satellite

300: satellite DM broadcast center 400: DM receiver

410: DM receiver module 420: transport stream demultiplexer

430: playback control unit 440: memory

450: codec 460: display unit

470: sound output unit 480: channel setting unit

The present invention relates to a satellite DMB signal sorting and reproducing system and method thereof, and more particularly, to temporarily store a non-viewable content by adding a temporary storage function to a DMMB broadcasting terminal, and to respectively view the unviewed content. By separating the video, audio, and text data of the data, and further excluding the null data included in each data, the satellite shortens the playback time and selectively plays only the data desired by the user among the separated data. A DM signal selective reproduction system and method thereof, and a broadcast delay signal selective reproduction terminal.

Typically, MPEG (Motion Picture Experts Group) -2 TS (Transport Stream) is used as a transmission standard for satellite digital multimedia broadcasting (DMB). According to the DMB broadcasting standard, the DMB broadcasting channel is a pilot channel for transmitting configuration information of a CDM (Code Division Multiplex) channel including Walsh code information, and a CAS (conditional access system) for transmitting authentication information for receiving DMB broadcasting. A channel, an EPG channel for transmitting information about a service channel, and at least one media channel for transmitting a real transport packet (hereinafter referred to as TS) packet data.

The digital broadcasting center transmits program specific information (PSI) information to the digital broadcast receiving apparatus, and the broadcast receiving apparatus may receive TS data according to a channel selected by a user with reference to program specific information (PSI) information. The PSI information includes a service description table (SDT), a program association table (PAT), and a program map table (PMT). The SDT includes broadcast service channels and related information that is currently being broadcast, and the user can select a desired channel with reference to the SDT. The PAT includes a broadcast channel ID (ID) currently being broadcast and a PID (Packet Identification Description) of a PMT having additional information of the broadcast channel. The PMT includes PIDs of video and audio TSs corresponding to individual broadcast channels.

That is, the digital broadcast receiver must know the PID (Packet Elementary Stream Packet Identification Description) value of the TS packet data of the channel in order to output the digital multimedia broadcast of the specific broadcast channel. This PID can be known by searching the PAT and PMT for the channel ID of the channel selected by the user from the SDT.

Such a conventional digital broadcast receiver includes a DMB module, a TS demultiplexer, a codec, and the like. The DMB module selects and receives a CDM channel corresponding to a broadcast channel selected by a user and outputs transport stream data for the corresponding broadcast channel. Transport stream data is received by the TS demultiplexer, and the TS demultiplexer demultiplexes TS data for each broadcast channel to provide a codec. The codec converts a digital signal into an audio signal or an image signal and outputs the digital signal to the speaker and the display unit, respectively.

However, the DM receiver according to the above-described streaming method has an advantage of receiving multimedia in real time. However, since the image storage is not performed in the streaming method, the DMB receiving apparatus may display the contents in a temporary unviewed state of the user. Missed. Accordingly, in the current terminal, there is a problem in that compensation is not made when continuous viewing of the broadcast is difficult due to the use environment factor.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to add a temporary storage function to a DM broadcast terminal so that temporary unviewed content can be viewed, and the unviewed content By dividing the data into video, audio, and text data, and excluding null data included in each data, thereby reducing playback time and selectively playing only data desired by the user among the separated data. To this end, it divides the DMB broadcasting program provided from the program provider into image data, audio data and subtitle data, and configures each frame based on the individual synchronization information on the separated data and sends the satellite DMB to the satellite. The number of DMB broadcasting signals transmitted from the broadcasting center and the satellite And storing the received DMB broadcast signal into the video data, the audio data, and the subtitle data for a predetermined time, and selecting and reproducing the separated data in a predetermined multiple based on the individual synchronization information. A satellite DMB signal selective reproduction system and method thereof, and a broadcast signal selective reproduction terminal are provided.

According to an aspect of the present invention, there is provided a satellite DMB signal selective playback system for implementing a temporary delay and selective playback function for a DMB broadcast signal provided by a streaming method. The system includes: a satellite DMB broadcasting center for dividing a DMMB broadcasting program provided from a program provider into image data, audio data, and caption data, and constructing each frame based on individual synchronization information for the separated data; And receiving a DMB broadcasting signal transmitted from the satellite, and separating the received DMMB broadcasting signal into the image data, audio data, and subtitle data based on the individual synchronization information, and storing the received DMMB broadcasting signal for a predetermined time. And a DMB receiver for selectively reproducing a predetermined multiple.

In the above configuration, the DM receiver comprises: a channel setting unit for setting an arbitrary channel for the DM broadcast signal; A DM reception module configured to open a CDM channel corresponding to a digital broadcast channel according to a channel selected by the channel setting unit, receive broadcast channel data, and generate transport stream data corresponding to the broadcast channel data; A transport stream demultiplexer for separating video data, audio data, and subtitle data from the transport stream data based on the individual synchronization information; Receive the separated video data, audio data and caption data, and store and control the video data, audio data, and caption data for a predetermined time in response to a temporary delay command, and separating the video data, audio data, and caption data according to a playback command after the predetermined time. A playback control section for controlling playback of the video data, audio data, and caption data in a predetermined multiple in individual or mixed form; And a memory for storing the video data, audio data, and caption data during the predetermined time.

In the above configuration, the reproduction control unit does not include null data included in each data in the reproduction data when the separated image data, the audio data, and the subtitle data are selectively reproduced.

In the above configuration, the reproduction control section includes: a key signal detection module for detecting a key signal corresponding to the temporary delay command; A data storage module for providing video data, audio data, and caption data provided from the transport stream demultiplexer to the memory; A data reproducing module for reproducing image data, audio data, and subtitle data stored in the memory in predetermined multiples and transmitting the same to a codec; In response to a key signal detection result of the key signal detection module, starting the data storage module to store and control the image data, audio data, and subtitle data into a memory for a time corresponding to a storage capacity of the memory; In response to a playback command for selectively reproducing data, audio data, and subtitle data, starting the data reproducing module, and reproducing time of the video data, audio data, and subtitle data and the currently received video data and audio data. A playback control module for performing time control for matching the output time of the caption data; And a switching module for switching the currently received video data, audio data, and subtitle data to the corresponding codec according to the matching time control of the playback control module.

" 여기서, 상기 T는 상기 메모리로 저장된 영상 데이터, 음성 데이터 및 자막 데이터의 총 출력 시간이고, 상기 N은 현재 수신되는 방송 신호가 상기 메모리로 저장되는 시간이며, 상기 n은 영상 제어부가 메모리에 저장된 영상 데이터, 음성 데이터 및 자막 데이터를 재생하기 위한 배율이고, 상기 m은 정수로서 0 ~ ∝ 까지 이다 " 에 기반하여 산출되는 것을 특징으로 한다.In the above configuration, the reproduction time of the video data, the audio data, and the subtitle data reproduced by a predetermined multiple is controlled so that the output time of the currently received broadcast signal is the same;

"Here, T is the total output time of the video data, audio data and subtitle data stored in the memory, N is the time that the currently received broadcast signal is stored in the memory, n is stored in the memory It is a magnification for reproducing video data, audio data, and caption data, wherein m is an integer from 0 to ∝.

In the above configuration, the individual synchronization information, characterized in that based on the image information of 15 frames per second.

According to another aspect of the present invention, a terminal for executing a temporary delay function and a selective playback function for a DMB broadcast signal provided in a streaming method is provided: The terminal may be configured in a streaming method. A terminal for executing a temporary delay function and a selective playback function for a provided broadcast signal,

A memory for storing video data, audio data, and caption data constituting the broadcast signal for a predetermined time; And an image control unit configured to store and control the image data for a predetermined time in response to a temporary delay command, and to selectively reproduce and control the image data, audio data, and subtitle data by a predetermined multiple from the predetermined time after the predetermined time. It is characterized by.

In the above configuration, the image control unit includes: a key signal detection module for detecting a key signal corresponding to the temporary delay command; A data storage module for providing video data, audio data, and caption data provided from the transport stream demultiplexer to the memory; A data reproducing module for reproducing image data, audio data, and subtitle data stored in the memory in predetermined multiples and transmitting the same to a codec; In response to a key signal detection result of the key signal detection module, starting the data storage module to store and control the image data, audio data, and subtitle data into a memory for a time corresponding to a storage capacity of the memory; In response to a playback command for selectively reproducing data, audio data, and subtitle data, starting the data reproducing module, and reproducing time of the video data, audio data, and subtitle data and the currently received video data and audio data. A playback control module for performing time control for matching the output time of the caption data; And a switching module for switching the currently received video data, audio data, and subtitle data to the corresponding codec according to the matching time control of the playback control module.

In the above configuration, the broadcast signal received in the streaming method is a signal of the streaming method including a satellite DMB signal, a video and a music video over the wireless Internet.

According to another aspect of the present invention. A satellite DMMB signal selective reproduction method for implementing a temporary delay and selective reproduction function for a DMB broadcasting signal provided by a streaming method is provided: The method includes: a) a satellite DMMB broadcasting center is a program provider; Separating the DM broadcast program provided from the image data, audio data, and caption data and transmitting the same to a satellite; b) receiving, by the DM receiver, a DM broadcast signal transmitted from the satellite and separating the DM broadcast signal into the image data, audio data, and subtitle data; c) storing, by the DM receiver, the separated image data, audio data, and subtitle data into a memory having a predetermined capacity; d) accepting a playback request at any time; e) reproducing and outputting the separated and stored image data, audio data, and caption data in n-fold in individual or mixed form according to the reproduction request; f) repeating steps b) to e) and calculating a reproduction end time point such that the reproduction output time point and the current reception time point for the video signal are the same; And g) outputting the video signal currently received in real time after the reproduction end time has elapsed.

In the above configuration, step a) divides the DMB program into image data, audio data, and subtitle data, and selects each frame based on individual synchronization information based on 15 frames per second of the separated data. It is characterized by the configuration.

In the above configuration, step b) is characterized in that for receiving the DMB broadcast signal transmitted from the satellite based on the individual synchronization information included in the broadcast information, and separating the image data, audio data and subtitle data.

" 여기서, 상기 T는 상기 메모리로 저장된 영상 데이터, 음성 데이터 및 자막 데이터의 총 출력 시간이고, 상기 N은 현재 수신되는 방송 신호가 상기 메모리로 저장되는 시간이며, 상기 n은 영상 제어부가 메모리에 저장된 영상 데이터, 음성 데이터 및 자막 데이터를 재생하기 위한 배율이고, 상기 m은 정수로서 0 ~ ∝ 까지 이다 "In the above configuration, the reproduction end time of step f) is to control the reproduction time of the video data, audio data, and subtitle data reproduced by a predetermined multiple so that the output time of the currently received broadcast signal is the same. 4;

"Here, T is the total output time of the video data, audio data and subtitle data stored in the memory, N is the time that the currently received broadcast signal is stored in the memory, n is stored in the memory Magnification for reproducing video data, audio data, and caption data, wherein m is an integer ranging from 0 to 占 "

It is characterized in that it is calculated based on.

In the above configuration, the reproduction end time point may be set to be smaller than the total output time T of the video data, audio data and subtitle data.

(Example)

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

1 is a schematic structural diagram of a mobile terminal based memory reproducing system according to an embodiment of the present invention.

As shown in FIG. 1, the system includes a program provider 100 for providing a satellite DMB program; A satellite DM broadcast center 200 which receives a DM broadcast program provided from the program provider 100 and transmits the streaming through a satellite 300 in a streaming manner; And a DM receiver receiving unit 400 for receiving a DM broadcast signal transmitted from the satellite 300 and reproducing a broadcast signal.

The DMB broadcasting center 200 divides the DMMB broadcasting program provided from the program provider 100 into image data, audio data, and subtitle data, and configures each frame based on individual synchronization information on the separated data. It transmits to the satellite 300. That is, the DMB broadcasting center 200 uses 1/15 frames as individual synchronization information for image data, audio data, and subtitle data based on 15 frames per second, and thus the image data, audio data, and Enter caption data. In this case, null data is included in each video data, audio data, and subtitle data.

The DM receiver 400 generally refers to a device for receiving a predetermined DM broadcast signal including a mobile terminal, and receives a DM broadcast signal transmitted from the satellite 300. The DMB broadcast signal received based on the individual synchronization information is divided into the image data, the audio data, and the subtitle data, and stored for a predetermined time, and the separated data is selectively reproduced in a predetermined multiple. Meanwhile, in the present embodiment, the DM receiver 400 is limited to an apparatus for receiving a DMB signal, but the DM receiver 400 is a streaming method such as a video and a music video through the wireless Internet in addition to the DMMB signal. It is preferable to apply to all devices that receive various video signals transmitted.

To this end, as shown in FIG. 2, the DM receiver 400 includes a channel setting unit 480 for setting an arbitrary channel for the DMB broadcasting signal and a channel selected by the channel setting unit 460. A DM reception module 410 for opening a CDM channel corresponding to a digital broadcast channel and receiving broadcast channel data, and generating transport stream data corresponding to the broadcast channel data, and transmitting the received DB based on the individual synchronization information; A transport stream demultiplexer 420 for separating video data, audio data, and caption data from stream data, the separated video data, audio data, and caption data are received, and the video is received in response to a temporary delay command (KEY). Data, audio data, and caption data are stored and controlled for a predetermined time, and the minutes are stored according to a playback command from the predetermined time. A playback control unit 430 for controlling playback of the video data, audio data, and caption data in a predetermined multiple in individual or mixed form; and a memory 440 for storing the video data, audio data, and caption data during the predetermined time period. ), A codec 450 for converting the image, audio, and caption data into an analog signal, a display unit 460 connected to an output terminal of the codec 450 to display an image and caption for the image data; The audio output unit 470 is connected to an output terminal of the codec 450 to output a voice for the voice data.

The memory 440 preferably has a storage capacity of about 1 minute to 3 minutes, but without limiting the memory capacity, the memory 440 will not depart from the gist of the present invention.

On the other hand, the playback controller 430 receives the video, audio, and subtitle data provided from the transport stream demultiplex 420, and stores the video data according to the temporary delay command (KEY) in the memory 440. Storage control or transfer control to the codec 450. That is, when receiving the temporary delay command, the playback controller 430 transmits the video, audio, and caption data provided to the codec 450 to the memory 440. In addition, when there is a release of the temporary delay command or a specific key input, the video controller 430 may pre-store video, audio, and caption data previously stored in the memory 440 in an individual or mixed form according to a user's selection. The output is reproduced in multiples of. At this time, the reproduction control unit 430 shortens the reproduction time by not including null data included in each data in the selective reproduction of the separated video data, audio data and subtitle data. Implement to

Looking at an example of the selective playback operation of the stored data of the playback control unit 430 according to the user's selection as described above, in the case of a scene where the magnificent nature is seen without sound in the movie, only the video data is played back because voice or subtitles are unnecessary. do. When listening to the language of educational broadcasting, only audio data is reproduced, and in the case of subtitle news, unnecessary data can be excluded from reproduction by reproducing only subtitle data.

Here, the playback controller 430 must match the timing of the video, audio, and subtitle data currently being reproduced in a predetermined multiple and the DMB broadcast signal received at the end of playback. That is, when the image stored in the memory 440 is one minute, and the reproduction control unit 430 plays back twice, the output time of the stored data of the memory 440 is 30 seconds. However, the memory 440 needs to store the video, audio, and subtitle data included in the current DMB broadcast signal for 30 seconds again, and the video is reproduced for 15 seconds. The DM broadcast signal is stored for 15 seconds and reproduced for 7.5 seconds. As described above, the storage and reproduction of the image must be repeated until the reproduction time of the data stored in the memory 440 is equal to the reproduction time of the DMMB broadcast signal.

Referring to Figure 3, the main configuration of the playback control unit is as follows.

That is, a key signal detection module 431 for detecting a key signal corresponding to the temporary delay command, and image data, audio data, and subtitle data provided from the transport stream demultiplexer 420 to the memory 440. A data reproducing module 432 for providing the data reproducing module 432 for reproducing the image data, audio data, and subtitle data stored in the memory 440 by a predetermined multiple to the codec 450; In response to the key signal detection result of the key signal detection module 431, the data storage module 432 is started to display the image data, the audio data, and the subtitle data for a time corresponding to the storage capacity of the memory 440. And store and control the memory 440 in response to a playback command for selectively reproducing the video data, the audio data, and the subtitle data from the outside or the inside. A playback control for starting the data playback module 433 and performing time control for matching the playback time of the video data, audio data, and caption data with the output time of the currently received video data, audio data, and caption data. A module 434 and a switching module 435 for switching the currently received image data to the codec 450 in accordance with the matching time control of the playback control module 434.

 The time control of the playback control module 434 is to control the playback time of the video data, audio data, and subtitle data to be reproduced in a predetermined multiple, that is, multiples faster than one, so that the output time of the currently received broadcast signal is the same. It may be expressed as Equation 1 below.

Here, T is the total output time of the image data, audio data and subtitle data stored in the memory, N is the time for the currently received broadcast signal is stored in the memory, n is the image stored in the memory A magnification for reproducing data, audio data, and caption data, wherein m is an integer from 0 to ∝. For example, N is 60 sec, i.e., the time for which image data, audio data, and caption data are received and stored in the current memory 440 is 60 seconds, and n is 3, that is, the image data stored in the memory 440 is tripled. When played back, 60 * (1/3 + 1/9 + 1/27 + ....). Here, n is an irrational number of 1 or more is applied for the application of multiples faster than 1x.

 Accordingly, the image controller 105 reproduces the image data stored in the memory 107 at triple speed for 60 * (0.481477) = 28.8888 seconds, and then reproduces the image data, audio data, and caption data currently received. The video and the received video can be output without interruption.

Of course, the playback control module 434 stores the video data, audio data, and caption data in the memory 440 for 28.8888 seconds, and selectively plays back the video data, audio data, and caption data stored according to the FIFO method during the same time. do.

Hereinafter, a DM broadcast method according to an embodiment of the present invention will be described with reference to FIG. 4. 4 is a flowchart illustrating a DMB broadcasting method according to the present invention.

First, the DMB broadcasting center 200 divides the DMMB broadcasting program provided from the program provider 100 into image data, audio data, and subtitle data and transmits the same to the satellite (S100). That is, the DM broadcast center 200 divides the DM broadcast program into image data, audio data, and subtitle data, and configures each frame based on individual synchronization information based on 15 frames per second of the separated data. do.

Then, the DM receiver 400 receives the DM broadcast signal transmitted from the satellite 200 and separates the image data, audio data, and subtitle data (S200). That is, the DM receiver 400 separates the DM broadcast signal into image data, audio data, and subtitle data based on individual synchronization information included in the broadcast information received from the satellite 200 in a streaming manner.

Thereafter, the DM receiver 400 stores the separated image data, audio data, and caption data in a memory 407 having a predetermined capacity (S300), and receives a reproduction request at an arbitrary time point (S300).

Then, the DM receiver 400 reproduces and outputs the separated and stored image data, audio data, and subtitle data in n-fold in individual or mixed form according to the reproduction request (S400). That is, in response to a reproduction command according to a user's selection, that is, a data reproduction of each of video, audio, and subtitles, or a data reproduction of a combination of two or more, reproduction is output in n multiples. For example, in the case of a scene where a magnificent nature is seen without a sound in a movie, only video data is reproduced because audio or subtitles are unnecessary. When listening to the language of educational broadcasting, only audio data is reproduced. Also, in the case of subtitle news, unnecessary data can be excluded from reproduction by reproducing only subtitle data. At this time, when the separated video data, the audio data, and the caption data are selectively reproduced, null data included in each data is not included in the reproduction data, thereby reducing the reproduction time.

Next, the steps 'S100' to 'S500' are repeated to calculate a playback end time such that the playback output time point and the current reception time point for the broadcast signal are the same (S500). That is, the playback time of the video data, audio data, and caption data reproduced by a predetermined multiple is controlled to be equal to the output time of the currently received broadcast signal.

Finally, after the reproduction end time has elapsed, the broadcast signal currently received is output in real time (S600).

As described above, the satellite DMB signal selection and reproduction system and method thereof according to the present invention add a temporary storage function to a DMMB terminal to allow a user to watch a temporary unviewed content.

In addition, the user can selectively reproduce only the desired data by separating the video, audio, and text of the unviewed content, so that only the video data is reproduced in the case of a scene where the magnificent nature is shown without sound in the movie. In addition, only audio data may be reproduced when listening to an educational broadcast language, and in the case of subtitle news, only subtitle data may be reproduced.

In addition, by excluding null data from each data divided into video, audio, and text, there is an effect that the playback time can be shortened when the selected data is reproduced.

Although the present invention has been described in detail with reference to the preferred embodiments, the present invention is not limited to the above-described embodiments, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will have the technical idea of the present invention to the extent that various modifications or changes are possible.

Claims (19)

A satellite DMB signal selective playback system for implementing a temporary delay and selective playback function for a DMB broadcasting signal provided by a streaming method, A satellite DMB broadcasting center for dividing a DMMB broadcasting program provided from a program provider into image data, audio data, and subtitle data, and constructing each frame based on individual synchronization information of the separated data; And Receives the DMB broadcast signal transmitted from the satellite, and stores the received DMB broadcast signal into the image data, audio data, and subtitle data for a predetermined time based on the individual synchronization information, and stores the separated data. And a DMMB receiver for selecting and playing back multiples of the satellite DMMB signal selection and playback system. The apparatus of claim 1, wherein the DMB receiving apparatus comprises: A channel setting unit for setting an arbitrary channel for the DMB broadcast signal; A DM reception module configured to open a CDM channel corresponding to a digital broadcast channel according to a channel selected by the channel setting unit, receive broadcast channel data, and generate transport stream data corresponding to the broadcast channel data; A transport stream demultiplexer for separating video data, audio data, and subtitle data from the transport stream data based on the individual synchronization information; Receive the separated video data, audio data and caption data, and store and control the video data, audio data, and caption data for a predetermined time in response to a temporary delay command, and separating the video data, audio data, and caption data according to a playback command after the predetermined time. A playback control section for controlling playback of the video data, audio data, and caption data in a predetermined multiple in individual or mixed form; And And a memory for storing the video data, audio data, and caption data during the predetermined time. The method of claim 2, wherein the playback control unit, And selecting and reproducing the separated image data, the audio data, and the subtitle data, wherein the null data included in each data is not included in the reproduction data. The method of claim 3, wherein the playback control unit, A key signal detection module for detecting a key signal corresponding to the temporary delay command; A data storage module for providing video data, audio data, and caption data provided from the transport stream demultiplexer to the memory; A data reproducing module for reproducing image data, audio data, and subtitle data stored in the memory by a predetermined number of times and transmitting the same to a corresponding codec; In response to a key signal detection result of the key signal detection module, starting the data storage module to store and control the image data, audio data, and subtitle data into a memory for a time corresponding to a storage capacity of the memory; In response to a playback command for selectively reproducing data, audio data, and subtitle data, starting the data reproducing module, and reproducing time of the video data, audio data, and subtitle data and the currently received video data and audio data. A playback control module for performing time control for matching the output time of the caption data; And And a switching module for switching the currently received image data, audio data, and subtitle data to the corresponding codec according to the matching time control of the reproduction control module. The method of claim 4, wherein the time control of the playback control module, Equation 2 below to control the reproduction time of the video data, audio data and subtitle data to be reproduced in a predetermined multiple (multiple faster than 1x) and the output time of the currently received broadcast signal;

"Here, T is the total output time of the video data, audio data and subtitle data stored in the memory, N is the time that the currently received broadcast signal is stored in the memory, n is stored in the memory Magnification for reproducing video data, audio data, and caption data, wherein m is an integer from 0 to ∝. " Satellite DM signal selection and playback system, characterized in that calculated on the basis of. The method of claim 1 or 2, wherein the individual synchronization information, Satellite DMB signal selection and playback system characterized in that the setting based on 15 frames per second. A terminal for executing a temporary delay function and a selective playback function for a broadcast signal provided by a streaming method, A memory for storing video data, audio data, and caption data constituting the broadcast signal for a predetermined time; And And storing and controlling the video data for a predetermined time in response to the temporary delay command, and controlling the video data, audio data, and subtitle data to be selectively reproduced by a predetermined multiple after the predetermined time. And a broadcast signal selective playback terminal. The method of claim 7, wherein the memory, And storing the video data, the audio data, and the caption data for 1 to 3 minutes. The method of claim 7, wherein the playback control of the video controller, And controlling playback start through a key button of the terminal, or automatically calculating a playback time corresponding to the memory capacity. The method of claim 7, wherein the predetermined multiple, A broadcast signal selective playback terminal, characterized in that multiples faster than one multiple. The image controller of any one of claims 7 to 10, And the null data included in each data is not included in the reproduction data during the selective reproduction of the video data, the audio data, and the subtitle data. The method of claim 11, wherein the image control unit, A key signal detection module for detecting a key signal corresponding to the temporary delay command; A data storage module for providing video data, audio data, and caption data provided from the transport stream demultiplexer to the memory; A data reproducing module for reproducing image data, audio data, and subtitle data stored in the memory in predetermined multiples and transmitting the same to a codec; In response to a key signal detection result of the key signal detection module, starting the data storage module to store and control the image data, audio data, and subtitle data into a memory for a time corresponding to a storage capacity of the memory; In response to a playback command for selectively reproducing data, audio data, and subtitle data, starting the data reproducing module, and reproducing time of the video data, audio data, and subtitle data and the currently received video data and audio data. A playback control module for performing time control for matching the output time of the caption data; And And a switching module for switching the currently received video data, audio data, and subtitle data to the corresponding codec according to the matching time control of the playback control module. The method of claim 12, wherein the time control of the playback control module, Equation 3 below to control the reproduction time of the video data, audio data and subtitle data to be reproduced in a predetermined multiple (multiple faster than 1x) and the output time of the currently received broadcast signal;

"Here, T is the total output time of the video data, audio data and subtitle data stored in the memory, N is the time that the currently received broadcast signal is stored in the memory, n is stored in the memory Magnification for reproducing video data, audio data, and caption data, wherein m is an integer from 0 to ∝. " And a broadcast signal sorting reproduction terminal, which is calculated based on the result. The broadcast signal of claim 7, wherein the broadcast signal received by the streaming method is And a satellite DMB signal, video and music video over the wireless Internet. A satellite DMMB signal selective playback method for implementing a temporary delay and selective playback function for a DMB broadcasting signal provided by a streaming method, a) the DMB broadcasting center separating the DMb broadcasting program provided from the program provider into image data, audio data, and subtitle data and transmitting the same to the satellite; b) receiving, by the DM receiver, a DM broadcast signal transmitted from the satellite and separating the DM broadcast signal into the image data, audio data, and subtitle data; c) storing, by the DM receiver, the separated image data, audio data, and subtitle data into a memory having a predetermined capacity; d) accepting a playback request at any time; e) reproducing and outputting the separated and stored image data, audio data, and caption data in n-fold in individual or mixed form according to the reproduction request; f) repeating steps b) to e) and calculating a reproduction end time point such that the reproduction output time point and the current reception time point for the broadcast signal are the same; And and g) outputting the currently received broadcast signal in real time after the reproduction end time has elapsed. The method of claim 15, wherein step a) The DMMB broadcasting program is divided into image data, audio data, and subtitle data, and each frame is configured based on individual synchronization information based on 15 frames per second of the separated data. How to play. The method of claim 15, wherein b), And receiving the DMB broadcast signal transmitted from the satellite based on the individual synchronization information included in the broadcast information and separating the DMMB signal into the image data, the audio data, and the subtitle data. The reproduction end time of step f) is Equation 4 below to control the reproduction time of the video data, audio data and subtitle data to be reproduced at a predetermined multiple (double speed faster than 1x) and the output time of the currently received broadcast signal;

"Here, T is the total output time of the video data, audio data and subtitle data stored in the memory, N is the time that the currently received broadcast signal is stored in the memory, n is stored in the memory Magnification for reproducing video data, audio data, and caption data, wherein m is an integer from 0 to ∝. " Satellite DMB delay signal sorting reproduction method characterized in that it is calculated based on. 19. The reproduction end point of claim 15 or 18, And a set value smaller than a total output time (T) of the video data, audio data, and caption data.

Images