JP2000358233A - Digital broadcasting system for dissolving noncoincidence between data carousel effective section and service request time point and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To predict interruption of a data carousel during current viewing of a viewer in the case of noncoincidence between a data service request time point and a data carousel effective section by processing an error when a first kind of data is changed into the second one and is not received. SOLUTION: A service request part 560 is requested a data service related to a program from a viewer and requests it to a processing part 580. A program change request part 570 inputs a program change request from a viewer and requests it to the processing part 580. In the meantime, the processing part 580 extracts the first data carousel related to the first program and executes the data service by the request from the service request part 560. When the first program is changed into the second one by the request of the program change request part 570 during the execution of the data service and information is not continuously obtained from the first data carousel, the error processing is executed in the first data carousel by an existing error processing system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcasting system, and more particularly, to a digital broadcasting system for transmitting data related to a broadcasting program in a data carousel system, when a viewer requests a data service and an effective period of the data carousel. The present invention relates to a digital broadcasting system in which a data service interruption method is changed according to a type of data and a control method therefor.

[0002]

2. Description of the Related Art The processing speed of information has been improved with the development of personal computers, and the transmission speed of information has been improved with the spread of the Internet. In this process, one is compatible with a personal computer and a television, while the other is integrated with a personal computer and a television. The integration of the personal computer and the television is promoted to add the television function to the personal computer and to add the personal computer function to the television. Already partially integrated. That is, Internet television and television reception cards for personal computers have been developed and used. However, they do not seem to be taking full advantage of the strengths of both media.

[0003] Digital televisions developed to eliminate the dissatisfaction with existing analog televisions not only provide more channels and higher image quality than analog televisions, but also provide various functions that analog televisions could not provide. In particular, it has become possible to provide various types of multimedia data services through a television through data broadcasting capable of broadcasting multimedia data together with a broadcasting program composed of video and audio.

[0004] That is, the development direction of digital television technology has shifted from the current center of high image quality and high sound quality to technology for providing various data services. It is developing into an interactive service. The types of services provided through such data broadcasting are broadly classified into a data service connected to a specific program, a unique data service, a two-way data service, and the like. The features of each will be described below.

[0005] First, a data service connected to a specific program transmits information related to a currently broadcast program to a broadcast signal (eg, an audio signal, a video signal, etc.).
Data service that is sent together with the event, including information related to sports broadcasting (player history information, terms, game rules, information on main events, etc.), drama broadcast additional information, and ongoing advertising additional information. Become.

On the other hand, the original data service is a data service that transmits original information not related to a program to be broadcasted at the same time as a broadcast signal, and then is displayed on a screen when a viewer requests it. , Stock quotes, software downloads, electronic coupons, web content and more. These proprietary data services go beyond simply textual forms, but include hypertext, graphics, images, animations, audio / video clips, and Java applets (J
Since applications such as ava applet) can be used, interactive services that make full use of multimedia are possible. For example, while playing a basketball, one side of the television screen may show detailed information of a particular player or provide a video clip of the player's past activities.

[0007] Finally, the bidirectional data service is a data service in which a viewer's input is transmitted to a broadcasting company, thereby providing a broadcast service. The bidirectional data service is provided by securing a bidirectional channel through a modem, a dedicated line, or the like. After receiving the information, you will not only be provided with services such as opinion polls, popular song ranking votes, audience ratings surveys, popularity polls for specific individuals, question surveys, home shopping, etc., but also external information providers. By connecting them, various interactive services can be realized.

[0008] Of these data services, a data service connected to a specific program and a unique data service are generally implemented through a one-way service such as a data broadcast. A data carousel method that repeatedly provides data having a valid section to enable an interactive service at an arbitrary point in time is further used.

FIG. 1 illustrates that a digital broadcast receiver (for example, a digital television) receives a program A and data (for example, an application) related to the program A by a data carousel system from a broadcasting station.
As shown in FIG. 1, the digital TV continuously receives data related to the program A in data carousel units having a predetermined valid period while receiving and outputting an audio / video signal for the program A.

When the interactive service is provided through the data carousel system, there are the following problems. That is, as shown in FIG. 2, the digital television receives data related to the program A in a data carousel manner while receiving and outputting audio / video data for the program A.

At this time, when there is a program change request from the viewer, that is, when changing from the currently output program A to the program B, how to process the currently output data carousel. That is, if a viewer requests a data service at a point A in FIG. 2, only a period B (a valid period of a corresponding data carousel) in FIG. 2 is required to completely perform the data service in response to the request. However, the change in the program causes the digital television to receive the data carousel related to the program B from the time point C in FIG. 2, that is, there is a problem that the data service request time does not coincide with the valid section of the data carousel.

For example, if the viewer changes the program to the program B while viewing the program A and requesting the profile of the hero appearing in the program A and receiving the data service, the digital television is set to the program A is changed to program B, and data related to program B is received in a data carousel system.

Therefore, the data carousel is interrupted in a state where the hero profile output before the program change is not completely output. As described above, it is difficult to avoid the interruption of the data service due to the inconsistency between the data service request time and the valid section of the data carousel. However, there is little processing technology for this.

[0014]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make it possible to predict the interruption of a data carousel currently being viewed by a viewer when a mismatch occurs between a data service request time and a valid section of the data carousel. It is an object of the present invention to provide an apparatus and a method.

[0015]

According to one aspect of the present invention, there are provided a method for broadcasting a plurality of programs, data associated with each program, and information on a processing method of the data. Receiving a first data associated with a first program from among a plurality of programs to perform a data service, and while performing the data service, the first data is changed to a second data to further receive the first data If not, the first
A broadcast receiving step of processing an error in accordance with a predetermined processing method for data and excluding an interruption method of the data service.

[0016] Preferably, the error processing in the broadcast receiving step includes an automatic extinction step of automatically terminating the data service when the predetermined processing method is automatic extinction, and the data service in the case of notification and extinction. Inform the viewer that the data service will be changed to 2 data,
A notification and termination step of terminating the data service for the first data, and in the case of a buffer service, judging the presence or absence of the first data stored in a buffer in advance, and if so, continuing the data service through this; If not, a buffer service step of notifying the viewer of the change of the data service.

Preferably, the selection of the processing method for the data service is specified when the data service provider produces the data service content.
According to another aspect of the present invention, in a digital broadcasting system for providing a data service by broadcasting a plurality of broadcast programs and data related thereto, a data service is provided through the first data received when the data service is requested. And if the first data is changed to the second data during the data service and the first data cannot be received further, the data service interruption method is set to the first data by a predetermined processing method. A data service processing method in a digital broadcasting system including an error processing step of separately processing an error.

Preferably, the error processing step includes an automatic erasure step of automatically terminating the data service when the predetermined processing method is an automatic erasure, and in a case of notification and erasure, the data service performs processing on the second data. Notifying the viewer of the change to the data service, notifying and terminating the end of the data for the first data, and in the case of the buffer service, determining the presence or absence of the first data stored in the buffer in advance. If so, a buffer service step is provided through which the data service is continuously provided, otherwise, a viewer is informed of a change in the data service.

Preferably, a descriptor is added to a table related to the data service to indicate the processing method. Preferably, the existing descriptor of the SDT is extended to indicate the processing method. Preferably, the selection of the processing method for the data service is specified by a data service provider when the data service content is produced. Preferably, the data service broadcasts in a data carousel manner.

According to still another aspect of the present invention, there is provided a digital broadcasting apparatus for broadcasting a plurality of programs, data related to the respective programs, and information on a processing method of the data, and a first program among the plurality of programs. A first data associated with the program is received and a data service is performed; and if the first data is changed to the second data during the data service and information cannot be further received from the first data, the first data is transmitted. And a digital broadcast system including a broadcast receiving apparatus that processes an error according to a predetermined data processing interruption method according to a predetermined processing method.

Preferably, the broadcast receiving device includes a service request unit for requesting a data service related to the program, a program change request unit for requesting a change from the current first program to another second program, The first data related to the first program is received, a data service is performed according to the request of the service request unit, and the first program is changed to the second program by the request of the program change request unit while performing the data service. If the first data cannot be received further, a processing unit processes an error according to a predetermined processing method for the first data and different from the data service interruption method.

Preferably, the processing unit automatically terminates the data service when the predetermined processing method is automatic disappearance, and changes the data service to a data service for the second data when the predetermined processing method is a notification and disappearance. The data service for the first data is terminated by notifying the viewer of the fact that the data service is terminated. In the case of the buffer service, the presence or absence of the first data stored in the buffer is determined. Otherwise, inform the viewer of the data service change.

According to still another aspect of the present invention, in a digital broadcasting system for broadcasting service data associated with a program in the form of a data packet together with the program, audio / video data for a specific program is inputted by receiving the data packet. And a demultiplexer for extracting the service data, an audio / video decoder for decoding the extracted audio / video data, and a data output control unit for controlling output of the extracted service data. An audio / video output unit for outputting the decoded audio / video data and the service data; a service requesting unit for requesting a data service related to the program; and a current first program to another second program. Change A requesting program change request unit, extracting first service data related to the first program, performing a data service according to the request of the service request unit, and performing the data service while requesting the program change request unit. And a processing unit for processing an error by changing the data service interruption method according to a predetermined processing method for the first service data when the first service data cannot be further received by being changed from the first program to the second program. Provided is a digital broadcast receiver including: Preferably, the data packet is an MPE
It is transmitted in a G-2 TS packet.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The objects, features, advantages, and the like of the present invention will be described below in detail with reference to the accompanying drawings. The terms described below are terms defined in consideration of the functions of the present invention, and can be specified by other people according to the custom of those skilled in the art, and should be interpreted based on the general contents of the present specification. is there.

First, in the digital broadcasting system according to the present invention, an MPEG-2 TS (Transport Stream) system can be used as a data service protocol for transmitting a broadcast program and service data from a broadcasting station to a digital television.
The syntax (Syntax) of the MPEG-2 TS transmission stream used as the transmission method according to the present invention, and the TS
The syntax of the packet will be described below with reference to FIG.

First, the transmission stream is composed of a number of transmission stream packets (ie, TS packets). Each TS packet is composed of 188 bytes, and a header for providing information on the corresponding TS packet and recording of actual data are recorded. Payload.

The header includes a sync byte, a transmission error indicator, a payload unit start indicator,
Transmission priority (transport priority), packet identifier (P
ID; Packet Identification), scrambling control (sc
rambling control), adaptive field control (adaptationfi
eld control), continuity counte
r), predetermined bits are allocated to each adaptation field to provide relevant information for the TS packet.

On the other hand, the payload includes packetized audio / video data and service data, and each of the packetized audio / video and service data is an elementary packet identifier.
ntifier; E_PID). The audio data, video data, and service data from each broadcasting station are multiplexed in units of element packets through the MPEG-2 TS transmission stream shown in FIG. 3 and transmitted to the digital broadcast receiver.

FIG. 4 illustrates transmission streams transmitted from the broadcasting stations A, B, and C. The audio data and the video data for the programs A and B from the broadcasting station A, and Indicates that service data is multiplexed and transmitted.

At this time, the service data includes information for notifying the digital television of the correlation between the data for providing the service interactively and the application at the request of the viewer, and the ATSC (Advanced Television Systems Committ).
ee) In the data broadcasting service, such information is specified in the SDT (Service Description Table). On the other hand, the service data is repeatedly transmitted during the expiration date of the broadcast program by the data carousel method.

A digital broadcast receiver in a digital broadcasting system for broadcasting data in a data carousel system according to the present invention will be described with reference to FIG.
First, when a broadcaster channel is selected by a viewer through the channel selector 500, the tuner 510 selects and receives a transmission stream of a specific broadcaster under the control of the processor 580. The demultiplexer 520 receives a transmission stream of a specific broadcasting station, extracts audio / video data for a specific program and service data transmitted in a carousel system, and extracts an audio buffer 5.
31, the video buffer 532, and the service data buffer 533, respectively. The audio / video decoders 541 and 542 decode the extracted audio / video data and output the data through the audio output unit 551 and the video output unit 522, respectively.

The data output control unit 543 controls the output of the extracted service data and outputs it to the audio / video output units 551 and 552. The service requesting unit 560 receives a data service related to the program from the viewer, requests the processing unit 580, and sends the program change requesting unit 57.
In the case of “0”, a program change request is input from the viewer, and a request is made to the processing unit 580.

On the other hand, the processing unit 580 extracts the first data carousel associated with the first program and performs a data service according to the request of the service requesting unit 560. If the first program is changed from the first program to the second program according to the request of the program change request unit 570 during the data service and information cannot be continuously obtained from the first data carousel, an error is generated in the first data carousel according to a predetermined error handling method. Process.

There are three types of error processing: automatic deletion, notification and deletion, and buffer service. Processing unit 58
0 automatically terminates the data service when the default error processing method is automatic disappearance, and informs the viewer that the data service is changed to a data service for performing the second data carousel in the case of notification and disappearance. The data service for the data carousel is terminated, and in the case of the buffer service, the presence or absence of the first data carousel stored in the buffer is determined, and if there is, the data service is continuously provided. Inform the user of the data service change.

Preferably, the method of setting the error handling method may be to add a descriptor to another table related to the data service, or to extend and provide an existing descriptor of SDT (Service Description Table). Also, when a data service content is produced by a data service provider, if a mismatch situation occurs, it can be designated to be processed by any one of automatic deletion, notification and deletion, and buffer service.

A method of processing data in a digital broadcasting system for broadcasting data in a data carousel system according to the present invention will be described with reference to FIGS. 6, 7 to 10. First, the processing unit 580
Controls the tuner 510 to input a transmission stream of a specific broadcasting station to the demultiplexing unit 520, and the demultiplexing unit 520 demultiplexes a specific program from the input transmission stream to perform audio / video decoder 541, 542
Output to the audio / video output units 551 and 552, respectively (s610).

Here, the output will be described with reference to an example. As shown in FIG. 7, audio / video data is converted to audio / video data when the space reciprocating ship returns to Earth on the disk cavalry. Output is performed through the output units 551 and 552. On the other hand, during the output of the audio / video data, as shown in FIG. 8, an icon indicating that the additional information corresponding to the discovery signal is present in a predetermined portion of the screen is separately written.

On the other hand, if there is a data service request for the program being viewed from the viewer through the service requesting unit 560, the processing unit 580 performs data service using the data carousel corresponding to the program extracted by the demultiplexing unit 520. (S620, s630).

Here, the service request means that an icon indicating the presence or absence of additional information for the discovery number is selected by the viewer on the screen shown in FIG. The additional information (eg,
After the dimensions, production process, etc.) are searched by the browser,
As shown in FIG. 9, it is displayed in detail on a part of the screen.

At this time, if the data carousel changes due to the request of the viewer while performing the data service, the processing unit 580 determines whether or not the data carousel before the change is necessary in order to continue performing the data service being performed. (S64
0, s650). Here, judging the necessity of the data carousel before the change is based on the fact that the viewer sees the additional information on the Discovery, and then continues to watch the continuous data on the previous main screen when the Discovery returns to the earth. That is, it is determined whether a signal to re-receive audio / video data has been input.

Preferably, the change of the data carousel may be caused by a program change request. If it is determined that the data carousel before the change is not further requested, the changed data carousel is collected (s651). That is, after the demultiplexing unit 520 performs demultiplexing on the changed program, the extracted data carousel is stored in the service data buffer 533.

This is an operation for continuously providing the corresponding data to the viewer when the content of the additional information is updated. As a result of the determination in s650, if the data carousel before the change is requested to continue to perform the data service in execution, the processing unit 580 requests the service change request and validates the data carousel according to the processing method set in the data carousel before the change. The error generated by the mismatch with the section is processed (s660).

Here, the case where the data carousel before the change is required is a case where a signal for re-receiving audio / video data is input, which is shown in FIG.
As shown in Fig. 0, after the Discovery landed, the pilots who boarded the Discovery "Zonegram (J
One Glam) "is a case where the viewer wants to keep watching the audio / video data received and displayed on the screen.

At this time, the data displayed after being searched by the browser is removed from the screen, and the screen returns to the original screen. Preferably, a method of setting a processing method for a data carousel valid section mismatch error in a data carousel may add a descriptor to a table related to a data service, or extend and provide an existing descriptor of an SDT.

The process of processing the service change request and the data carousel valid section mismatch by the processing method set in the data carousel before the change by the processing unit 580 will be described in detail below. That is, a method of removing data searched and displayed by the browser from the screen is separately performed by a viewer according to a predetermined method.

First, when the data carousel valid section mismatch processing method is automatic disappearance, the data service being executed is automatically terminated (s661). That is, when the transmission of the data searched and displayed by the browser is completed, the operation of the browser is automatically terminated. On the other hand, if the processing method is notification and disappearance, the viewer is informed that the running data service is changed to the data service for performing the changed data carousel, and the data service for the running data carousel is notified. The process ends (s662, s663). In other words, when the transmission of the data retrieved and displayed by the browser is completed, the browser operation is terminated after a predetermined period of time elapses after notifying the viewer in advance that the operation of the browser will be stopped. is there.

If the processing method is the buffer service, it is determined whether there is a data carousel in the data service stored in the service data buffer 533 in advance (s664). If it is determined that there is a data carousel in the data service stored in the service data buffer 533 in advance, the data carousel continues to be provided through the data carousel (s665).

As a result of the determination, the service data buffer 53
If there is no data carousel in the data service stored in advance in 3, the viewer is notified of the change of the data service being executed, and the data service is terminated through selection of the viewer (s 666, s 667). Here, the control of the mismatch processing method performed by the processing unit 580 is performed according to a method selected by the viewer among the three processing methods provided as options by the service requesting unit 560, or based on predetermined information in the SDT.

[0049]

As described above, according to the present invention, in a digital broadcasting system for providing data service by broadcasting data in a data carousel system, a process of discrepancy between a data service request time and an effective section of a data carousel is performed. There is an effect that the service provider provides the viewer with various data according to the characteristics of the predetermined data carousel. Although the preferred embodiments of the present invention have been described in detail, those skilled in the art to which the present invention pertains may variously modify or modify the present invention without departing from the spirit and scope of the present invention defined in the appended claims. It can be seen that changes can be made.

[Brief description of the drawings]

FIG. 1 illustrates that a digital broadcast receiver receives a program A and data related to the program A from a broadcasting station by a data carousel method.

FIG. 2 illustrates receiving data related to program A and program B when changing from program A to program B;

FIG. 3 shows MPEG-2 used as a transmission system according to the present invention.
TS transmission stream syntax and its component elements
Indicates the syntax of the TS packet.

FIG. 4 illustrates transmission streams transmitted from broadcast stations A, B, and C.

FIG. 5 is a block diagram illustrating a configuration of a digital receiving device according to the present invention.

FIG. 6 is a flowchart showing a data processing method according to the present invention.

FIG. 7 is a diagram schematically illustrating a data processing method according to the present invention.

FIG. 8 is a diagram schematically illustrating a data processing method according to the present invention.

FIG. 9 is a diagram schematically illustrating a data processing method according to the present invention.

FIG. 10 is a diagram schematically illustrating a data processing method according to the present invention.

[Explanation of symbols]

 500 Channel selection unit 510 Tuner 520 Demultiplexer 531 Audio buffer 532 Video buffer 533 Service data buffer 541 Audio decoder 542 Video decoder 543 Data output control unit 551 Audio output unit 552 Video output unit 560 Service request unit 570 Program change request unit 580 Processing unit

Claims (24)

[Claims] 1. A method of broadcasting a plurality of programs, data associated with each program, and information on a processing method of the data, and a first program associated with a first program among the plurality of programs.
When receiving the data and performing the data service, if the first data is changed to the second data during the data service and the first data cannot be further received, the first data is processed according to a predetermined processing method. A broadcast receiving step of handling an error independently of a data service interruption method. 2. The error processing in the broadcast receiving step includes: an automatic extinction step of automatically terminating the data service when the predetermined processing method is an automatic extinction; Notifying the viewer that the data service will be changed to the data service, notifying and ending the data service for the first data, and judging the presence or absence of the first data stored in the buffer in the case of the buffer service. 2. The digital broadcasting method according to claim 1, further comprising a buffer service step of continuing to provide the data service through the data service if present, and notifying a viewer of a change of the data service otherwise. 3. The method of claim 1, wherein the selection of the processing method for the data service is specified when a provider of the data service creates the data service content.
Digital broadcasting method described in 1. 4. In a digital broadcasting system for providing a data service by broadcasting a plurality of broadcasting programs and data related thereto, performing a data service through the first data received when the data service is requested; If the first data is changed to the second data during the data service and the first data cannot be received further, an error is generated in the first data according to a predetermined processing method except for the data service interruption method. A data service processing method in a digital broadcasting system including an error processing step of processing. 5. The error processing step includes: when the predetermined processing method is an automatic disappearance, automatically terminating the data service; and when notifying and disappearing, the data service performs data processing on the second data. Notifying the viewer of the change to the service, notifying and ending the data service for the first data, and, in the case of the buffer service, determining the presence or absence of the first data stored in the buffer in advance. 5. The data service processing method according to claim 4, further comprising: a buffer service step of continuing to provide the data service if necessary, and otherwise notifying a viewer of a change in the data service. 6. The data service processing method according to claim 5, wherein in the buffer service step, final termination of the data service is performed through selection of the viewer. 7. The data service processing method according to claim 4, wherein the data is broadcast in an MPEG-2 TS packet. 8. The data service processing method according to claim 4, wherein a descriptor is added to a table related to a data service to indicate the processing method. 9. The data service processing method in a digital broadcasting system according to claim 4, wherein an existing descriptor of SDT is extended to indicate the processing method. 10. The data in the digital broadcasting system according to claim 8, wherein the processing method selection for the data service is specified by a provider of the data service when producing the data service content. Service processing method. 11. The method according to claim 4, wherein the data service is broadcast in a data carousel system. 12. A digital broadcasting apparatus for broadcasting a plurality of programs, data related to the respective programs, and information on a processing method of the data, and receiving first data related to a first program among the plurality of programs. Performing a data service, and if the first data is changed to the second data during the data service and information cannot be further received from the first data, the data service is performed on the first data according to a predetermined processing method. A digital broadcasting system including a broadcast receiving device that processes an error according to a different interruption method. 13. The broadcast receiving apparatus, further comprising: a service requesting unit for requesting a data service related to the program; a program change requesting unit for requesting a change from the current first program to another second program; The first data related to the first program is received, a data service is performed according to the request of the service request unit, and the first program is changed to the second program by the request of the program change request unit while performing the data service. 13. The digital broadcasting system according to claim 12, further comprising: a processing unit that processes an error according to a predetermined processing method for the first data and differently from the data service interruption method when the first data cannot be further received. 14. The processing unit, when the predetermined processing method is automatic disappearance, automatically terminates the data service, and when the predetermined processing method is a notification and disappearance, the data service is changed to a data service for the second data. And terminates the data service for the first data,
In the case of the buffer service, it is determined whether or not the first data stored in the buffer is present, and if the first data exists, the data service is continuously provided through the first data. If not, the viewer is notified of the change of the data service. The digital broadcasting system according to claim 13, wherein: 15. The digital broadcasting system according to claim 14, wherein an existing descriptor of SDT is extended to indicate the processing method. 16. The method according to claim 1, wherein the selection of the processing method for the data service is specified when the data service provider produces the data service content.
16. The digital broadcasting system according to 4 or 15. 17. The digital broadcasting system according to claim 12, wherein the data is broadcast in a data carousel system. 18. A digital broadcasting system for broadcasting service data related to a program in the form of a data packet together with the program, wherein the data packet is input to extract audio / video data for a specific program and the service data. A multiplexer; an audio / video decoder for decoding the extracted audio / video data; a data output control unit for controlling output of the extracted service data; and the decoded audio / video data An audio / video output unit for outputting the service data; a service requesting unit for requesting a data service related to the program; and a program change request for requesting a change from the current first program to another second program. A first service data associated with the first program, performing a data service according to a request from the service request unit, and performing a data service during the data service according to a request from the program change request unit. 2
A processing unit for processing an error according to a predetermined processing method for the first service data according to a predetermined processing method when the first service data is not received due to a change to a program. 19. The processing unit may be configured to automatically end the data service when the predetermined processing method is automatic disappearance, and to change the data service to a data service for the second data when the predetermined processing method is a notification and disappearance. And terminates the data service for the first data,
In the case of the buffer service, it is determined whether or not the first data stored in the buffer is present. If the first data is present, the data service is continuously provided through the buffer. Otherwise, the viewer is informed of the change of the data service. Digital broadcast receiver characterized. 20. The digital broadcast receiver according to claim 18, wherein the data packet is transmitted as an MPEG-2 TS packet. 21. The digital broadcast receiver according to claim 18, wherein a descriptor is added to a table related to a data service in the digital broadcast system to indicate the processing method. 22. An existing descriptor of SDT is extended to indicate the processing method.
2. A digital broadcast receiver according to claim 1. 23. The method of claim 2, wherein the selection of the processing method for the data service is specified when the data service provider produces the data service content.
23. The digital broadcast receiver according to 1 or 22. 24. The digital broadcast receiver according to claim 18, wherein an icon indicating that new service data has been extracted from the demultiplexer is notified to a predetermined part of the video output part.