KR20020062022A - Digital television receiver capable of reproducing interactive contents and broadcasting system for the contents - Google Patents

Abstract

PURPOSE: A digital television receiver is provided to use other stream data except data transmitted under data broadcasting environment of a digital television, and to use a synchronized presentation time stamp, thereby supplying bidirectional contents under graphic environment by synchronization with a broadcasting program. CONSTITUTION: A synchronization information receiver(310) receives synchronization reproducing information, which includes synchronization information with a broadcasting program and location information related to a specific area within a video frame. A downloading unit(320) downloads software for executing contents related to the broadcasting program. An indication input unit(380) inputs indication information of a user. A transmitter(350) informs the user of a processed result. A memory(340) stores the software. A micro processor(330) executes the software stored in the memory, and relates the received broadcasting program with the synchronized location information and the indication information, then synchronizes the information with the broadcasting program to transmit the synchronized result to the transmitter.

Description

Digital television receiver capable of reproducing interactive contents and broadcasting system for the contents}

The present invention relates to a digital television system, and more particularly to a digital television system capable of executing interactive content.

More specifically, the present invention relates to area data or location information synchronized with other stream data, for example, video, audio, and data streams in addition to data transmitted in a data broadcasting environment of a digital television, and identifiers, time information, that is, presentation time indicators. The present invention relates to a broadcast system and a receiver for providing a useful service to a user using a presentation time stamp and user input.

There are three types of data broadcasting added to the conventional television broadcasting. One is to broadcast data separate from the broadcast program of audio or video, for example, to transmit stock, news, weather information, etc. during the blanking period of the television signal scanning period. Another is data broadcasting, which is somewhat related to a broadcast program, which may be a plot of a currently broadcast program or a broadcast schedule. Another more advanced form may be a data broadcast that is played in synchronization with a television broadcast program. It is broadcasted as a caption or the like, and is overlapped with a program currently broadcasted on the bottom of the screen.

However, such data broadcasting has conventionally utilized some extra bands of the video band within the limited band of analog broadcasting, thereby limiting the amount or type of information that can be transmitted, and it has been difficult to integrate with video or audio broadcasting.

With the development of high definition digital television broadcasting technology, many techniques are known for supporting interactive content in digital broadcasting. For example, Japanese Patent Laid-Open No. 9-23417 discloses a playback device for realizing an interactive program. But in this technology, television is more a game machine than a broadcast system. Specifically, the partial progression of the downloaded and stored story is controlled based on the manipulation of the operation means by the user, and the overall progression of the story is controlled by the program control information received from the broadcast satellite. Therefore, it is difficult to apply such a system to digital broadcasting contents that are expected to become more common in the future.

In digital television, video, audio, and data are digitally multiplexed according to ISO / IEC 13818-1 (MPEG2 system) and transmitted in the form of a transport stream. In particular, data broadcasting, which was partially performed using a vertical blanking interval in the conventional analog television system, can be transmitted and received in earnest in digital television.

In this regard, the digital broadcasting standard proposes the following four methods for encapsulating data in an MPEG-2 transport stream (TS).

Data piping

Data streaming

Addressable sections

Data download

Data piping is an encapsulation method that provides only minimal information about how to filter and collect data from MPEG-2 transport streams. It does not specify more than how to put data in a transport stream. Compared to other encapsulation protocols, new protocols are needed between service providers and receiver manufacturers to send and receive data services with data piping methods.

Data streaming can provide additional information, in particular timing information. By using this timing information, synchronous or synchronized data broadcasting can be performed. This is possible because data is transmitted based on the PES packet defined in MPEG-2.

Both the DSM-CC addressable section encapsulation and the download protocol use the DSM-CC framework as defined in MPEG-2 ISO / IEC 13828-6. The DSM-CC protocol is used for MPEG-2 transport streams. The MPEG-2 private section specified in MPEG-2 ISO / IEC13818-1 is used to map the.

Therefore, it is necessary to decide which data is transmitted using which encapsulation protocol. In this regard, the ATSC Data Broadcast Standard Implementation Guidelines provide the following guidelines.

Bounded Unbounded / streaming Network datagram Asynchronous Asynchronous module download protocol Asynchronous Data Streaming Download Protocol DSM-CC Addressable Sections Synchronous Synchronous data streaming (PES) Synchronous Data Streaming (PES) Synchronous Data Streaming (PES) Synchronized Synchronized Data Download Protocol Synchronized Data Streaming (PES) Synchronized Data Streaming (PES)

Here, the limited size / streaming / network datagrams are classified by the characteristics of the data size, and the asynchronous / synchronous / synchronization is classified according to the timing or synchronization requirements for the data.

For the first asynchronous bounded data blob, a data blob or module can represent a file or directory containing files, a collection of directories, a module, a hierarchy of modules, an object, a collection of objects, etc. In short, it corresponds to the case where the size of the data (boundary) can be known from the content producing side. In this case, since the data modules to be transmitted need no synchronization condition, they are generally transmitted by the data download method.

The second network datagram may be encapsulated in various ways as necessary. Examples of network datagrams include Internet Protocol (IP) datagrams and Internetwork Packet Exchange (IPX) datagrams. If the network datagram being sent does not have timing or synchronization requirements, this network datagram is sent through the DSM-CC addressable section structure. This can be an effective way to deliver web pages, provide turbo-internet services, or deliver advanced television enhancement forum (ATVEF) content. . If the transmitted network datagrams must be synchronized to a program using the Presentation Time Stamp (PTS), then the Synchronized Streaming Protocol or the Synchronized Download Protocol is used. Can be sent. Network datagrams with these characteristics can be considered datagram triggers or data associated with audio / video. The network datagram can also be transmitted by using the addressable section, but in this case, the timing or synchronization requirements cannot be met. If the transmitted network datagram has a synchronous characteristic, it is transmitted using a synchronous streaming protocol.

The third streaming data may be both synchronous, synchronous, or asynchronous. In case of synchronous data, it is prescribed to transmit using PES packet, in case of synchronized data, use MPEG-2 PES in case of stream data, and in case of non-stream data, use data download protocol. It is prescribed. In the case of asynchronous stream data, the ATSC data broadcasting standard stipulates transmission through asynchronous data donwload. In the DVB data broadcasting standard, MPEG-2 PES is applied as in the case of synchronous / synchronized data streaming. There is a slight difference by specifying what to send.

The data transmitted in this way can be serviced as an application through the binding process. The specific binding method is slightly different between ATSC and DVB, but the overall method is generally similar.

One program may include any number of applications, each of which may consist of one or more resources. In this case, each resource may exist in a transport stream of a digital broadcast transmitted or may be obtained through another network.

As such, the ATSC and DVB protocols only open the possibility for the transmission of synchronized information, but there is no specific process related to specific content. The present invention provides a digital broadcast system capable of executing an application capable of transmitting and processing information synchronized with the progress of a broadcast program in order to add an entertainment element that may make a broadcast program more interesting in general. It is an object to provide a receiver.

Furthermore, an object of the present invention is to provide a digital broadcast receiver and a broadcast system capable of reproducing interactive program contents while complying with the digital television broadcasting protocol.

In addition, an object of the present invention is to provide a digital broadcast receiver and its broadcast system that can conveniently update interactive contents.

1 is a diagram schematically showing an embodiment of a digital television broadcasting environment to which the present invention is applied.

2 is a block diagram showing the configuration of a digital television receiver according to an embodiment of the present invention.

3 is a block diagram of a digital television broadcasting system according to an embodiment of the present invention.

According to an aspect of the present invention, there is provided a digital television receiver comprising: a program receiver for receiving and restoring a digital broadcast program stream; and a playback unit for playing the received broadcast program. According to the preferred aspect of:

A synchronization information receiver for receiving synchronization reproduction information including synchronization information with the broadcast program and including location information associated with a specific area within a related video frame;

A download unit for downloading software for executing contents related to the broadcast program;

An instruction input unit configured to receive instruction information of a user;

A transmission unit for notifying the processed result;

A memory in which the software is stored;

The software stored in the memory is executed to associate the location information synchronized with the broadcast program received through the synchronization information receiver with the instruction information input by the user, to synchronize and process the broadcast program, and process the result through the transmitter. And a control unit for transmitting to.

According to this aspect, the digital television receiver according to the present invention can download and execute software related to the broadcast program while playing the broadcast program, and as the software is executed, the user can view the broadcast program played through the screen and the speaker. It is possible to process the indication information input by means of an indication means such as a mouse while watching, using the synchronized information transmitted with this broadcast stream, and transmit the result back to the broadcast station. The broadcast station can use such information transmitted from numerous receivers to plan various contents.

A digital television receiver according to another aspect of the present invention is characterized in that the download section receives the software via the same channel as the broadcast program stream.

According to this aspect, the digital television receiver according to the present invention can download software necessary for content execution through the same wireless channel through which a broadcast program is broadcasted, so that it is more convenient and advantageous to lead a content provider on the broadcaster side. That is, the software can be installed at a suitable time in time, and the inspection of the required system can be performed by downloading the required software at a suitable time.

According to another aspect of the present invention, the digital television receiver determines whether the requested software has already been downloaded from the software identifier included in the download request information previously received by the download unit, and skips the download if it has already been downloaded. If not, it is characterized in that the download.

According to this aspect, the digital television receiver according to the present invention can download software necessary for executing contents related to a broadcast program from time to time, so that even if a viewer watches the program from the beginning without watching the program from the beginning, the necessary software is repeatedly needed. By transmitting the same as the broadcast signal, it is possible to install it and participate in the content from this point on.

A digital television receiver according to another aspect of the present invention further includes audio and image information in which synchronization reproduction information received by the synchronization information receiver is reproduced in synchronization with the broadcast program; The controller may further process the audio and image information to be reproduced by the playback unit in synchronization with the broadcast program.

According to this aspect, the digital television receiver according to the present invention becomes capable of responding to the viewer with audio and video information as the content related to the broadcast program is executed.

A digital television broadcasting system according to an aspect of the present invention for achieving the above object is:

A program transmitter for transmitting a broadcast program;

A synchronization information transmission unit including synchronization information with the broadcast program and transmitting synchronization reproduction information including position information associated with a specific region in a related video frame;

A download unit which is executed in a receiver and downloads software for controlling the progress of contents related to the broadcast program to a plurality of receivers so as to associate and process the position information and a user's instruction input;

And a network connection unit configured to receive execution results of contents related to the broadcast program from a plurality of receivers.

Furthermore, the digital broadcasting system according to the present invention is characterized in that the download unit transmits the software through the same channel as the broadcast program stream.

Furthermore, the digital broadcasting system according to the present invention transmits the software a plurality of times while the download unit transmits the broadcast program, and transmits the download request information including the corresponding software identifier before the transmission time of each software. Characterized in that.

In addition, the digital broadcasting system according to the present invention may further include audio and image information in which the synchronization reproduction information transmitted by the synchronization information transmitter is reproduced in synchronization with the broadcast program.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a diagram schematically showing an embodiment of a digital television broadcasting environment to which the present invention is applied.

The digital television broadcasting system 100 according to the present invention is located in a broadcasting station and is composed of one or a series of closely connected devices. In addition, the digital television receiver 300 according to the present invention receives the digital television broadcast signal transmitted from the broadcasting system 100 through the airwave 600. Here, although the case of receiving through the air wave 600 is taken as an example, the present invention is not limited thereto. For example, broadcast signals may be transmitted via satellite or may be transmitted over the wire by local cable television operators. In short, the present invention does not rely on broadcast transmission technology, and therefore should be interpreted as applicable to all existing and emerging broadcast transmission technologies in which television broadcasting can be transmitted.

Furthermore, according to a preferred aspect of the present invention, the television receiver of the present invention supports two-way operation and includes a technical configuration for transmitting data to a broadcasting system, for example, an Internet set-top box 400. However, unlike shown, it does not necessarily need to be in the form of a set-top box, and may include a network adapter in the television receiver itself. The internet set-top box 400 is connected to the network connection unit 200 to which the broadcasting system 100 is connected via the public network 500. The network connection unit 200 is preferably composed of a plurality of network servers to enable the connection of a number of viewers.

However, the technical configuration for the two-way support of the present invention is not limited to such an Internet network, and an external modem may be connected to the television receiver instead of the set-top box 400 or may be embedded in the receiver itself so as to be connected through a public telephone network. . In this case, the public network 500 may be a wired or wireless telephone network, and the network connection may be call processing servers similar to a plurality of ARS servers.

The technical configuration for the interactive support of the present invention may include a technical configuration capable of individual access of the viewers as described above, and a combination thereof may be used, for example, some subscribers may access the telephone network and some subscribers may access the Internet. Since the technology for database interworking and content operation through such different types of communication networks is known before the filing date, detailed description thereof will be omitted.

According to an aspect of the present invention, the viewer may indicate a specific object displayed on the screen while watching a program using the pointing device 700. The pointing device may be in the form of an infrared remote control equipped with a trackball, or may be in the form of a pistol which is adopted in a known game machine for intriguing interest.

2 is a block diagram showing the configuration of a digital television receiver according to an embodiment of the present invention. As shown, the receiver 300 receives a demodulator 390 for demodulating a signal received from an antenna and extracts a digital stream, a stream distributor 391 for distributing the extracted digital stream by type, and a broadcast program. A program receiving unit 360 for playing; An instruction input unit configured to receive and process instruction input from a synchronization information receiver 310 for receiving synchronization information, a download unit 320 for processing a download, a memory 340, and a viewer's pointing device 700 ( 380, a transmitter 350 for transmitting the processed result to the broadcasting station, a microprocessor 330 for controlling them, and a playback unit 370 for outputting the processed result to the outside. The program receiver 360 includes a video decoder 361 that plays a video stream, an audio decoder 362 that plays an audio stream, and a configuration such as a system decoder that is not shown. The configurations of these decoders, demodulator 390, stream distributor 391, and the like are well known to the extent that they are commercially available, and thus detailed descriptions thereof will be omitted. The hardware configuration of the synchronization information receiver 310 or the download unit 320 is to separate the stream from the decoder chip and store it in a buffer. As described above, a specific synchronous or asynchronous stream is transported from the transport stream according to the standard protocol. Because it is separate, it can be configured in software as part of the decoder chip, depending on which protocol is used. However, if only a protocol is determined, a technique of separating a stream transmitted through the protocol is implemented in software as part of a commercially available decoder chip, and a detailed description thereof will be omitted since it can be easily implemented by those skilled in the art. However, what protocol to transmit will be described in detail later through specific embodiments.

The playback unit 370 includes a display device 371 and an audio output unit 372. The display device 371 is known in various forms as a display and a driver such as a CPT, LCD, etc. The audio output unit 372 is composed of a plurality of channels of audio amplifiers and speakers.

The television receiver according to the embodiment of the present invention configured as described above demodulates the over-the-air signal received from the antenna by the demodulator 390 and converts it into a digital signal. The stream distribution unit 391 analyzes the converted signal and distributes it to each processing module. The video decoder 361 decodes the video stream, and the audio decoder 362 decodes the audio stream. As is well known, these two streams are output to the playback unit 370 in synchronization with the presentation time indicator (PTS) decoded by the system decoder.

On the other hand, the synchronization information according to the present invention together with the broadcast program including the video and audio streams is also transmitted through an appropriate protocol according to the digital television standard protocol, for example, the synchronized PES stream protocol described above. This information is decoded by the synchronization information receiver 310 and processed by the microprocessor 330 via the memory 340. Although it is illustrated here as being stored in the memory 340, in reality, the memory 340 may be input to the microprocessor 330 through a small temporary buffer in hardware.

In addition, the software necessary to execute the digital television broadcasting content according to the present invention is transmitted through an appropriate protocol according to the digital television standard protocol, for example, the asynchronous DSM-CC download protocol described above. The software is decoded by the download unit 320, stored in the memory 340, and executed by the microprocessor 330.

The microprocessor 330 processes the synchronization information received through the synchronization information receiver 310 and the user's instruction input input through the instruction input unit 380 while executing the software of the memory 340, and reproduces the same. For example, it is possible to superimpose and display a broadcast program together with some of the processing results and feed back to the broadcasting station through the transmission unit 350.

3 is a block diagram of a digital television broadcasting system according to an embodiment of the present invention. The essential configuration of the digital television broadcasting system can be understood as the reverse process of the block of the digital television receiver shown in FIG.

Images taken from a television camera or the like are encoded in the video encoder 161 and converted into a digital stream, and audio signals are encoded in the audio encoder 162. In connection with these signals, synchronization information for the interactive content according to the present invention is encoded in the synchronization information transmitter 110. The downloader 120 encodes the software required to play the interactive content according to the present invention into an appropriate format so that the receiver can download and execute the software. These signals are synthesized in the stream synthesizer 191. Such signal synthesis or encoding process is defined in the digital television standard, and detailed description thereof will be omitted. These signals are modulated into airwaves by the modulator 190 and transmitted.

Synchronization information according to the present invention may have the following data format, for example.

REGION_INFO

{

object_id: An identifier that represents the object that this REGION_INFO points to. Number or string.

region_info: Location information represented by one or more rectangular regions composed of (left, top, right, bottom)

start_PTM: Start time that this location information applies to

end_PTM: The time when the application of this location information ends. If the time when this location information is applied is only one frame, end_PTM has the same value as start_PTM.

application_specific_info: Information required by the characteristics of each application.

};

Here, the region_info is an example of a rectangle, but may be a circle or a polygon. Furthermore, region_info may be a region in any form to refer to a specific display of a broadcast program, for example, a specific person or object.

1) Let P be a data broadcast program according to an embodiment of the present invention. When the starting time of P is T _S and the ending time is T _E , the service provider should inform the receiver that P is served at T _S. This is done by recording information about the application (application name, type, resources used, etc.) in a Data Service Table (DST). If P consists of N taps and each tap is represented by tap [i] (i = 0 to N-1), zero or more are found in tap [i] (i = 0 to N-1) Executable code may be included. This executable code is asynchronously downloaded to the receiver at least once between T _S and T _E. The downloaded executable code is stored in the storage space of the receiver and driven by the microprocessor. If P is an application that can be driven sufficiently with only the descriptor and other information of the application, such executable code may not be transmitted. The executable code may be in the form of a Java applet or some other form.

2) The tap [i] (i = 0 to N-1) includes a PID _R of a transport stream packet including a stream in which location information is transmitted in the form of REGION_INFO. These transport stream packets form a Synchronized Packet Elementary Stream of one synchronized packet, and the payload of each PES packet includes an array structure of REGION_INFO. Each instance of the REGION_INFO structure contains location information about a particular entity at a particular time. Let this PES be PES _R.

3) The tap [i] (i = 0 to N-1) may also include other information than the information described in 1) and 2). It may be data or stream in the form of a file downloaded through the transport stream, or a resource transmitted through another network, or a back channel for sending user input or other information, for example, the network of the present invention. Information about the connection unit 200 may be used.

4) After T _S , the user at the receiver side receives the information point (x, y) for a specific position through a pointing device, for example, a trackball, a mouse, or a gun adopted in a game machine. Can give to The receiver determines an REGION_INFO including a point (x, y) by examining an array of REGION_INFO corresponding to the time T _user at which the _user inputs a point (x, y). This decision may be made by the executable code downloaded in 1) or by a specific module inside the receiver. If the executable code downloaded in 1) performs the above position comparison operation, the receiver must provide the downloaded executable code with a means for informing that the point (x, y) has been input from the user.

5) The object_id selected by the user can be found from the REGION_INFO corresponding to the comparison operation of 4).

6) The result of the calculation using the object_id found in 5) may be fed back to the user through the screen or transmitted to the broadcasting station through a separate channel if the return information is included in P.

Hereinafter, a digital television broadcasting system and a receiver thereof according to the present invention will be described using specific contents as an example.

Example 1

In the quiz program on animals, a moderator answers a specific question. The viewer looks at the screen and selects the animal corresponding to the correct answer through a pointing device connected to the receiver, such as a trackball mounted on a remote control. The receiver processes the result and delivers the selection result for each viewer to a broadcasting station using a back channel. The station informs the program of those who will receive a prize by drawing among those who have answered correctly at the end of the program.

In order to implement the present embodiment, a question question module, location information about animals, an image that appears when an animal is hit, and a module for sound, correct answerer, and lottery result presentation must be transmitted.

The question-making module is a software for controlling texts and images of the problem and subsequent processes, and is transmitted to the receiver at the start of the quiz program using the asynchronous DSM-CC download protocol. For those of you who haven't seen this quiz program since the beginning, the question module is retransmitted repeatedly. At this time, the specific module residing in the receiver processes the identifier after checking whether the currently transmitted module is a previously downloaded module. As a result, receivers that have already received this module will not download duplicates.

Location information for the animals is transmitted via Synchronized PES Streaming. The question question module compares this location information with the coordinates (x, y) entered by the user and asks the user if he or she will select this animal if the coordinates (x, y) match the location information of the particular animal at a particular moment. However, such confirmation is not essential. When the user selects, the user information is input (phone number) and when the input is completed, the object_id of the animal selected by the user is transmitted to the broadcasting station through a separate channel.

Images and sounds that will appear when the animal is hit are pre-downloaded via the Asynchronous DSM-CC download protocol. When the user hits an animal, the image corresponding to the animal is displayed at the appropriate position, and at the same time, the sound is played.

In addition, a network for sending user information when the animal selected by the user is the correct answer, for example, information necessary for connecting to the Internet or a modem, is described in a network resource table. In addition, the module for presenting the correct answer and the result of the lottery can be transmitted through the asynchronous or synchronized DSM-CC download protocol.

Example 2

The second embodiment relates to an inter-party debate program to be held prior to the presidential election. During the presentation and debate between candidates, a mock election may be conducted in which the viewer selects the preferred candidate. The selection of the viewers is made by instructing a pointing device such as a mouse when a candidate appears on the screen according to the guide information displayed as a caption or the like. These selection information is transmitted from a number of television receivers to broadcast stations in separate channels. In addition, information about viewers participating in the mock election may be input through a keyboard and transmitted to a separate channel. If not, information about the viewers is entered in advance through a membership registration process on a website or offline and a list of some possible viewers viewing the receiver by the processing of the software according to the present invention is presented and the selection input therefrom. It is also possible to input to the pointing device. The mock election results thus transmitted may be collected by the broadcasting station server and superimposed with the broadcast program in real time, and may be displayed as caption or image information, or may be displayed as a PIP, or may be broadcast or announced as a final result after the program is finished. .

The modules required for the service of the second embodiment require a service management module and a network connection module for transmitting a user's selection to the broadcasting station, and the position information and the intermediate and final result presentation information for each candidate are synchronized with the broadcasting program from the broadcasting station. Must be sent.

The service management module is software for informing the user that a service is being executed at the start of the program and managing the service during the service time. The service management module is repeatedly transmitted through the DSM-CC asynchronous download protocol. Location information for each candidate is transmitted through a synchronized PES stream. The service management module compares the location information with the location information input by the user and informs the broadcasting station of the user's selection through a separate channel when the location information of the specific candidate matches at a specific moment. The user's inputs are aggregated in an instant and become known to the electors. Intermediate and final result announcement information is transmitted asynchronously via the DSM-CC Download protocol. As in the first embodiment, a separate network for transmitting a user's selection to a broadcasting station is described in an NRT (Network Resource Table).

Example 3

In a sports relay program such as soccer, when a specific player is selected by using a pointing device, the player is displayed brightly, and information about the player is displayed on the screen in the form of a caption or a separate window. At this time, the player selected by the user can keep the highlighted state even while the moving picture is displayed on the screen.

Modules required to service the third embodiment require a service management module, and the file for each player and the location information of each player should be transmitted in synchronization with the broadcast program. The service management module is a software for informing the user that a service is being performed at the start of a program and managing the service during the service time, and is repeatedly transmitted through the DSM-CC asynchronous download protocol. The file for each player is also repeatedly retransmitted via the DSM-CC asynchronous download protocol, which contains the object_id for each player. On the other hand, the position information of each athlete is transmitted through the synchronized PES stream (Synchronized PES streaming). When the user selects a specific player, the personal information of the player is displayed on the screen, and the image which highlights the specific player selected by the user is displayed on the video displayed on the screen. As a result, the user can better observe the movement of a particular athlete.

Example 4

It is possible to play a shooting game in a movie program using the television broadcasting system and the television receiver according to the present invention. Pointing in the form of pistols that viewers usually use in game consoles as a pointing device for specific questions of characters in the movie, such as the culprit in a mystery or the person who will show some behavior in the next scenario. Use your device to make virtual shots. Numerous viewers can participate in the game at the same time, compare the scores, process the results, and let each viewer know their rank. By using this, viewers' opinions on the characters of the viewers can be known by synthesizing the hits of the viewers on the characters of the movie. On the other hand, it is also possible to give a weighted score according to the concentration on a particular person when the viewer priced through the pointing device in order to attract interest. This can be easily implemented by setting a plurality of region coordinates transmitted from a broadcasting station and configuring the software to give different weights to each region, and then determining which of these regions the coordinate value input to the pointing device belongs to. In addition, if an incorrect answer is given instead of a correct answer, a negative score may be given by subtracting the score.

The present invention makes it possible to provide interactive content in a graphical environment in synchronization with a broadcast program. This enables quizzing, transmission of additional information closely related to the current broadcast program, and real-time surveys related to the broadcast program. Therefore, the present invention can be interesting through the active participation of the viewer of the program beyond the passive viewing attitude of the viewer according to the one-sided broadcast, it can provide a high level of information.

Furthermore, the present invention can efficiently update or receive software necessary for providing content.

While the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Claims (8)

A digital television broadcasting receiver comprising: a program receiving unit for receiving and restoring a digital broadcast program stream; and a playback unit for playing the received broadcast program; A synchronization information receiver including synchronization information with the broadcast program and receiving synchronization reproduction information including location information associated with a specific area in a related video frame; A download unit for downloading software for executing contents related to the broadcast program; An instruction input unit configured to receive instruction information of a user; A transmission unit for notifying the processed result; A memory in which the software is stored; The software stored in the memory is executed to associate the location information synchronized with the broadcast program received through the synchronization information receiver with the instruction information input by the user, to synchronize and process the broadcast program, and process the result through the transmitter. Control unit to transmit to; Digital broadcast receiver comprising a. The digital broadcast receiver as claimed in claim 1, wherein the download unit receives the software through the same channel as the broadcast program stream. The method according to any one of claims 1 to 4, wherein the download unit determines whether the requested software has already been downloaded from the software identifier included in the download request information previously received and skips the download if it has already been downloaded. And download only when it is not. The apparatus of claim 1, wherein the synchronization reproduction information received by the synchronization information receiver further includes audio and image information reproduced in synchronization with the broadcast program; And the control unit further processes the audio and image information to be reproduced by the playback unit in synchronization with the broadcast program. In a digital television broadcasting system including a program sending unit for transmitting a broadcast program, A synchronization information transmitter including synchronization information with the broadcast program and transmitting synchronization reproduction information including location information associated with a specific area in a related video frame; A download unit which is executed in a receiver and downloads software for controlling the progress of contents related to the broadcast program to a plurality of receivers so as to associate and process the position information and a user's instruction input; A network connection unit for receiving a result of executing content related to the broadcast program from a plurality of receivers; Digital television broadcasting system comprising a. 6. The digital television broadcasting system as claimed in claim 5, wherein the download unit transmits the software through the same channel as the broadcast program stream. 7. The download according to any one of claims 5 and 6, wherein the download unit transmits the software a plurality of times while the broadcast program is transmitted, and includes a corresponding software identifier prior to the transmission time of each software. A digital television broadcasting system characterized by transmitting request information. 7. The digital television broadcasting system according to any one of claims 5 and 6, wherein the synchronization reproduction information transmitted by the synchronization information transmitter further includes audio and image information reproduced in synchronization with the broadcast program.