KR100778537B1 - Apparatus for transmitting and receiving a broadcasting signal and method thereof - Google Patents

Abstract

A method for transceiving a broadcasting signal and an apparatus for transceiving the broadcasting signal are provided to realize two-way data broadcasting by using one-way broadcasting standards so that a broadcasting receiver can receive desired contents. A method for transceiving a broadcasting signal comprises the following steps of: generating a multimedia object TS(Transfer Stream) including a header field, where the data structure of a multimedia object is set, an additional information field, where a two-way service connection information is set, and a multimedia object; converting the generated multimedia object TS into a broadcasting TS(S20); and transmitting the broadcasting TS as a broadcasting signal corresponding to a one-way broadcasting transfer form(S30).

Description

Method for transmitting and receiving broadcast signals and apparatus for transmitting and receiving broadcast signals

1 is a flowchart illustrating an embodiment of a broadcast signal transmission and reception method according to the present invention.

2 is a diagram illustrating a file format according to jfif

FIG. 3 is a diagram illustrating a marker field in the jfif field of FIG. 2 in detail.

4 is a diagram illustrating bidirectional service connection information according to an embodiment of a broadcast signal transmission / reception method according to the present invention.

5 is a diagram illustrating bidirectional service connection information according to another embodiment of a broadcast signal transmission / reception method according to the present invention.

FIG. 6 illustrates digital audio broadcasting (DAB) and digital multimedia broadcasting (DMB) standards for each layer. FIG.

7A and 7B illustrate some field areas of the MOT protocol.

8 is a diagram illustrating an example of setting bidirectional service connection information according to an embodiment of a broadcast signal transmission / reception method according to the present invention.

9 is a flowchart illustrating another embodiment of a broadcast signal transmission / reception method according to the present invention.

10 is a view showing an embodiment of a broadcast signal transmission apparatus according to the present invention

11 illustrates an embodiment of a broadcast signal receiving apparatus according to the present invention.

<Explanation of symbols in the main part of the drawing>

110: data generation unit 120: conversion unit

130: transmission unit

210: broadcast signal receiver 220: broadcast signal processor

230: control unit 240: content display unit

250: communication unit 260: interface unit

The present invention relates to a broadcast signal transmission and reception method and a broadcast signal transmission and reception apparatus.

More specifically, the present invention relates to a broadcast signal transmission and reception method and a broadcast signal transmission and reception apparatus capable of transmitting and receiving a data service linked to a broadcast signal without using a separate channel.

Digital broadcasting can be used to send and receive additional data for audio broadcasting and video / audio broadcasting. By using additional data, attention is focused because broadcast receivers can access more diverse contents. Therefore, various digital broadcasting standards provide various methods for data services.

However, such a conventional digital broadcasting method can only provide a one-way data service, and cannot provide a bi-directional data service, thereby making it impossible to focus the user's attention and obtain data desired by the user. There is a problem. Therefore, there is a problem in that the utilization of data broadcasting cannot be increased when the business model of infinite data broadcasting is used in the one-way limited method as described above.

On the other hand, in the current digital broadcasting, it is sometimes possible to implement a bidirectional data service according to a broadcast standard. In this case, information for bidirectional communication is set and transmitted only in a data transmission / reception area fixed to the broadcast transmission / reception standard. When the bidirectional communication information is set in the reception signal according to the broadcast transmission / reception standard, the broadcast signal reception apparatus connects to the data broadcast transmission apparatus using the information for the bidirectional communication.

Accordingly, there is a problem in that bidirectional data services cannot be implemented without following the conventional digital broadcasting standard, and bidirectional communication cannot be performed unless a standard standard for bidirectional data service is defined in the conventional digital broadcasting standard.

An object of the present invention is to provide a broadcast signal transmission and reception method and a broadcast signal transmission and reception apparatus capable of implementing bidirectional data broadcasting using a conventional unidirectional data broadcasting standard.

Another object of the present invention is to provide a broadcast signal transmission / reception method and a broadcast signal transmission / reception apparatus capable of receiving content desired by a user.

It is still another object of the present invention to provide a broadcast signal transmission and reception method and a broadcast signal transmission and reception apparatus capable of connecting and utilizing data broadcasting with content.

Another object of the present invention is to provide a broadcast signal transmission / reception method and a broadcast signal transmission / reception apparatus capable of providing bidirectional information for a data service without providing a separate standard for a conventional bidirectional data service.

According to an aspect of the present invention, there is provided a multimedia object transport stream including a header field having a data structure of a multimedia object, an additional information field having bidirectional service connection information, and a data field including the multimedia object. And converting the generated multimedia object transport stream into a broadcast transport stream and transmitting the broadcast transport stream as a broadcast signal according to a unidirectional broadcast transport format.

In another aspect, the present invention provides a method for receiving a broadcast signal according to a unidirectional broadcast transmission format, converting the received broadcast signal into a multimedia object transport stream, and obtaining bidirectional service connection information and a multimedia object from the converted multimedia object transport stream. And connecting to a server providing a data service using the bidirectional service connection information.

In another aspect, the present invention provides a broadcast signal receiver for receiving a broadcast signal according to a unidirectional broadcast transmission format, a broadcast signal for converting the received broadcast signal into a broadcast transport stream, and obtaining bidirectional service connection information and a multimedia object from the converted broadcast transport stream. A signal processor, a communication unit for transmitting and receiving a signal to and from a communication network through a bidirectional channel, decoding the multimedia object output by the broadcast signal processor, and controlling the communication unit to communicate with a communication network according to the bidirectional service connection information output by the broadcast signal processor It provides a broadcast signal receiving apparatus including a control unit and a content display unit for displaying the multimedia object output by the control unit.

In still another aspect, the present invention provides a data generation unit for generating bidirectional service connection information and a multimedia object, and converts a multimedia object transport stream including the bidirectional service connection information and the multimedia object into a broadcast transport stream according to a unidirectional broadcast transmission format. Provided is a broadcast signal transmitting apparatus comprising a converter and a transmitter for transmitting the converted stream to a broadcast transmission network.

The multimedia object transport stream may be in accordance with a multimedia object transfer (MOT) protocol, and the bidirectional service connection information may be a uniform resource locator (URL).

The bidirectional service connection information may be set in a reserved area of the multimedia object transfer (MOT) protocol or may be set in a variable length area.

The data service may be at least one of a service based on a wireless application protocol (WAP), a short message service (SMS), and a call service.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically implement the present invention will be described.

The embodiment of the present invention may insert the information capable of the interactive service into the broadcast content itself and transmit and receive the same to enable the interactive service from the broadcast content. In this case, the information capable of bidirectional service includes service connection information such as link information to a web server. If the service connection information is inserted into the content itself, the service connection information may be set in a separate broadcast transmission / reception standard and may be embedded in the content itself or a conventional unidirectional broadcast transmission / reception standard. Accordingly, it is not necessary to change the broadcast transmission / reception standard in order to transmit and receive service connection information capable of bidirectional service, and the service connection information may be transmitted together with the content in any broadcast transmission standard. The broadcast signal receiving apparatus may obtain the service connection information in the process of decoding the content itself, instead of obtaining the service connection information from the channel related to the broadcast reception standard.

1 is a flowchart illustrating an embodiment of a broadcast signal transmission and reception method according to the present invention. An embodiment of a broadcast signal transmission and reception method according to the present invention will be described with reference to FIG. 1.

The bidirectional service connection information is inserted into the data area of the broadcast content (S10).

If the content is a still image, the bidirectional service connection information may be inserted into the still image data itself or data transmitting the format of the still image file upon transmission of the still image. For example, when the content is a jpeg (joint photographic expert group) image, bidirectional service connection information may be set in a jpeg file interchange format (jfif) for transmitting the jpeg image. A detailed embodiment of step S10 of inserting bidirectional service connection information into jfif is described below with reference to FIGS. 2 to 5.

If the content is audio broadcast content, bidirectional service connection information may be set in a broadcast transmission area used for unidirectional audio broadcasting. For example, when the broadcast transmission area for audio broadcasting is audio content that follows digital audio broadcasting (DAB), the bidirectional service connection information may be set in the audio broadcast content itself or a data area added and transmitted to the audio broadcast. Hereinafter, for convenience of terminology, the broadcast content data of step S10 is used as a term including a program associated data (PAD) or non-program associated data (NPAD) region for transmitting additional data to an audio broadcast channel. A detailed embodiment of S10 for inserting bidirectional service connection information into a program associated data (PAD) or non-program associated data (NPAD) region will be described with reference to FIG. 6.

In operation S20, the broadcast content into which the bidirectional service connection information is inserted is converted into a broadcast transport stream according to a unidirectional broadcast transmission format. For example, the broadcast transport stream may be converted into a digital audio broadcasting (DAB) stream according to the Eureka (European REserch Coordination Agency project-147) method. The converted stream is then transmitted as a signal considering the broadcast transmission network (S30).

An embodiment when receiving the broadcast signal transmitted as described above will be described.

A broadcast signal according to the unidirectional broadcast transmission format is received (S40). The received broadcast signal is converted into a broadcast transport stream, and bidirectional service connection information included in broadcast content data is obtained from the converted broadcast transport stream (S50).

The broadcast content is displayed and remotely connected to a server providing a data service using the bidirectional service connection information (S60). Accordingly, it is possible to implement bidirectional data broadcasting using the unidirectional data broadcasting standard.

In some cases, a separate data transmission / reception area is allocated for bidirectional data broadcasting. In general, when the bidirectional broadcast is implemented, the connection information for the bidirectional broadcast or the broadcast data service in response to the connection information are transmitted and received according to a separate broadcast transmission / reception standard. However, according to the embodiment of FIG. 1, it is not necessary to provide a separate transmission / reception standard in order to transmit / receive bidirectional service connection information, and may transmit / receive it by being included in a conventional unidirectional data broadcasting standard.

2 is a diagram illustrating the format of jfif. An example of inserting bidirectional service connection information into a broadcast content related standard rather than a broadcast transmission standard will be described with reference to FIG. 2 according to an embodiment of the present invention. For example, if the content is a jpeg image, jfif can be used to indicate the file format of the jpeg image. In jfif, application specific data may be set to transmit additional information as well as jpeg image data.

As shown in FIG. 2, a SOI (start of image) field indicating a jfif file format, a marker field for application file format or text input data, and a field for transmitting a compression method of jpeg (DQT, SOF, DHT) ) And a field (SOS, scan data, EOI) through which image data compressed in jpeg is transmitted.

The marker field defines an image to be transmitted as APP0, and includes a marker for an application defined as 1 to 15 to transmit additional applications or text.

For reference, DQT (define quantization tables) transmits information about the quantization table, SOF (start of frame) transmits information about the size and sampling of a picture image, and DHT (define huffman tables) transmits a Huffman code table. In addition, the start of scan (SOS) transmits an identifier of each component and information related to the Huffman code table for each component.

FIG. 3 illustrates a marker field of the jfif field of FIG. 2 in detail. When additional data is transmitted, an identifier for each application can be set from FFE1 to FFEF. FFFE can be set if the data to be transmitted is a character. Then, the data length and the transmission data to be transmitted can be set.

4 is a diagram illustrating bidirectional service connection information according to an embodiment of a broadcast signal transmission / reception method according to the present invention. For example, connection information of a bidirectional service can be set in an application that can be set in a marker field among jfif fields. If bidirectional service connection information is defined in the application APP10 according to jfif, link information or connection information such as an application identifier (FFEA), a data length, and a uniform resource locator (URL) may be transmitted. For example, the application APP10 is a service that connects to an external server using a wireless network according to a WAP (wireless application protocol), the service linked to the short message service (SMS) in APP11, and the call interlocking service in APP12 Can be. The broadcast receiver may identify each service for bidirectional broadcasting as described above, and receive the service in both directions according to each service. 2 to 4 illustrate the case of a jpeg image, but a still image file such as another format image, for example, PNG (portable network graphics) format, may similarly insert bidirectional service connection information.

5 is a diagram illustrating bidirectional service connection information according to another embodiment of a broadcast signal transmission / reception method according to the present invention. For example, if a character is transmitted in the marker field of the jfif field, the identifier for the character transmission (FFFE), the data length, the identifier for the bidirectional service connection information (indicated by WAP in FIG. 5), and the URL (uniform resource locator) Or link information such as

Similar to the example illustrated in FIG. 4, the identifier for the bidirectional service connection information may be provided with the bidirectional service according to the identifier indicating that the SMS is a short message service or a call interworking service in addition to the wireless application protocol (WAP).

Accordingly, according to a broadcast transmission / reception standard capable of providing only one-way broadcast service, as shown in FIGS. 4 and 5, the jpeg image may be transmitted in a jfif format, and the broadcast receiver may obtain bidirectional service connection information and connect to the corresponding service. In addition, according to any one-way broadcast transmission / reception standard, two-way broadcast service may be implemented by transmitting and receiving two-way service connection information.

FIG. 6 is a diagram illustrating digital audio broadcasting (DAB) and digital multimedia broadcasting (DMB) standards for each layer. Referring to Figure 6 describes an embodiment of the present invention that can implement a bidirectional service using a one-way service specification as follows.

In the case of an audio broadcasting service according to the digital audio broadcasting (DAB) standard, a transmission standard for service program associated data (PAD) is prepared in addition to the standard for pure audio broadcasting. The digital audio broadcasting (DAB) standard also includes a transmission standard for non-program associate data. The PAD may transmit a text or the like through a dynamic data channel (DLS) and a slide show or the like through a multimedia object transfer (MOT) protocol. Such broadcast data may be linked with audio broadcast data.

NPAD can transmit and receive slide shows and the like through a multimedia object transfer (MOT) protocol. NPAD is transmitted as a separate service component, but as already mentioned, it is defined as being included in unidirectional broadcast content because it follows the standard for audio broadcast transmission. Therefore, in the embodiment of the present invention, when the broadcast content is broadcast content according to the unidirectional broadcast standard, the bidirectional broadcast service may be enabled in the unidirectional broadcast service by setting the bidirectional service connection information in the data area for setting additional data of the broadcast content. have.

As an example, a method of transmitting bidirectional service connection information using PAD and NPAD will be described by taking an MOT protocol that can be transmitted to both PAD and NPAD. When the multimedia object is transmitted according to the MOT protocol, the multimedia object may be a jpeg image having the same format as described with reference to FIG. 4. In addition, as described with reference to FIG. 5, the bidirectional service connection information may be transmitted in ASCII characters, text files, or the like according to the MOT protocol. Accordingly, even though the unidirectional broadcast service is transmitted through the PAD and the NPAD, the bidirectional broadcast service may be enabled by transmitting the bidirectional service connection information. The digital multimedia broadcasting (DMB) standard mentioned above is just one example, and a digital video broadcasting (DVB) system may be used.

In another embodiment of the present invention, when transmitting and receiving a broadcast signal, the bidirectional service information may be transmitted by a transmission method of a multimedia object capable of transmitting a multimedia file. An example of a method of transmitting a multimedia object is a multimedia object transfer (MOT) protocol among broadcast and communication protocols. The MOT is an example of a multimedia object. One protocol.

The MOT protocol includes a first field to which information related to the data structure of a multimedia object belongs, a second field to which additional information required when a broadcast object to be played back belongs, and a third field to which raw data for the broadcast object belongs. It may include.

The MOT may transmit length information of the multimedia object before transmitting the multimedia object. The MOT may include the length information of the multimedia object in the second field.

The first field may be referred to as a header field that can be transmitted together with the broadcast object. In addition, since the third field is a field for transmitting data on a broadcast object, the third field may be generally called a data field or a body field.

The length information of the multimedia object may be included in a second field between the first field and the third field, and the second field may be referred to as an additional information field. The additional information field includes information necessary for playing a multimedia object. The interactive service information of a broadcast may also be included in the additional information field according to the MOT protocol.

FIG. 7A is a diagram illustrating some data fields of a MOT protocol applied by DAB (multimedia audio broadcasting) of EN 301 234 V2.1.1. The bidirectional service information according to the present invention may be transmitted and received by being included in an unspecified area, a designated area, or an unused area of the MOT protocol for backward compatibility of the MOT protocol.

In FIG. 7A, the unspecified region is designated as reserved for MOT protocol extensions. URL information, which is bidirectional service information, may be inserted and transmitted in the unspecified area illustrated in FIG. 7A. For example, bidirectional service information including link information such as www.mbc.co.kr may be included and transmitted in an area indicated as reserved for MOT protocol extensions of the MOT protocol.

The bidirectional service information is a designated area of the MOT protocol but may be included in an unused area and transmitted and received. When the unused area includes the bidirectional service information, it may be included in the fixed-length data area but may be included in the variable-length data area.

The MOT protocol includes a variable length data field in the above-described second field, for example, a ContentName field and the like as a variable length data field.

For reference, FIG. 7B is a characteristic indicator for filling a data field such as ContentName illustrated in FIG. 7A, and when the b7b4 bit is 0010, the data field such as ContentName may be filled with Arabic numerals and transmitted.

8 is an embodiment of a broadcast signal transmission and reception method according to the present invention, and shows an example of transmitting and receiving bidirectional service information to a data field such as ContentName illustrated above.

The bidirectional service information capable of providing the bidirectional service in the network may be link information, in which case the bidirectional service information may include an IP (internet protocol) address of a server providing the bidirectional service.

 An internet protocol (IP) address may refer to a domain that is a logical group or unit to identify a server providing a bidirectional service. For example, if the link connection information such as 164.101.80.4 is included in the ContentName field, the information in Arabic numerals can be set as described with reference to FIG. 7B. FIG. 8 is an example in which numeric addresses of IPs included in an IP address and corresponding to a subdomain of a top level domain are listed in a row. In the example of FIG. 8, 164 101 080 004 corresponds to each lower address of the IP address 164.101.80.4 illustrated above. Since the ContentName field is a variable length field, and a numeric IP address can be replaced or converted to another number or other unit, it can be transmitted and received. Thus, a method of transmitting and receiving bidirectional service information to an unused or unspecified area of the MOT protocol is illustrated in FIG. Various embodiments are possible in addition to 8.

9 illustrates another embodiment of the present invention for transmitting and receiving bidirectional service information using a multimedia object transmission scheme. An embodiment according to the present invention will be described with reference to FIG. 9.

In operation S110, a multimedia object transport stream including a header field in which a multimedia object data structure is set, an additional information field in which bidirectional service connection information is set, and a data field including the multimedia object is generated. The multimedia object transport stream may be a multimedia object transport stream according to the MOT protocol, and the bidirectional service connection information may be an IP address or a domain name.

When the multimedia object transmission method is the MOT protocol, the bidirectional service connection information may be set in a variable length field such as ContentName in the additional information field.

In operation S120, the generated multimedia object transport stream is converted into a broadcast transport stream. For example, the broadcast transport stream may be converted into a digital audio broadcasting (DAB) stream according to the Eureka (European REserch Coordination Agency project-147) method. The broadcast transport stream is converted and transmitted as a broadcast signal according to the unidirectional broadcast transmission format (S130).

When the signal is received, a broadcast signal according to a unidirectional broadcast transmission format is received (S140). The received broadcast signal is converted into a multimedia object transport stream, and bidirectional service connection information and a multimedia object are obtained from the converted multimedia object transport stream (S150).

The bidirectional service connection information is used to connect to a server providing a data service (S160). Accordingly, it is possible to implement bidirectional data broadcasting by using a unidirectional broadcast transmission / reception standard.

10 is a view showing an embodiment of a broadcast signal transmission apparatus according to the present invention. An embodiment of an apparatus for transmitting broadcast signals according to the present invention will be described with reference to FIG. 10. An embodiment of the apparatus for transmitting broadcast signals according to the present invention includes a data generator 110, a converter 120, and a transmitter 130.

The data generator 110 generates the bidirectional service connection information and the multimedia object, respectively. For example, the multimedia object may be a still image of the format described with reference to FIG. 4, may be bidirectional service connection information that may be transmitted to a PAD or NPAD of an audio broadcast, or may be a file that may be transmitted through a MOT protocol.

The converter 120 converts the multimedia object transport stream including the bidirectional service connection information and the multimedia object into a broadcast transport stream according to a unidirectional broadcast transport format. For example, the converter 120 outputs a broadcast transport stream in which bidirectional service connection information is set in an additional information field of a MOT protocol, which is a protocol capable of transmitting multimedia objects, and multimedia objects in a third field.

The transmitter 130 transmits the converted stream as a signal considering a broadcast transmission network. The broadcast transmission network includes both wired and wireless networks.

11 is a diagram illustrating an embodiment of a broadcast signal receiving apparatus according to the present invention. An embodiment of a broadcast signal receiving apparatus according to the present invention will be described with reference to FIG. 11 as follows. An embodiment of a broadcast signal receiving apparatus according to the present invention includes a broadcast signal receiver 210, a broadcast signal processor 220, a controller 230, a content display unit 240, a communication unit 250, and an interface unit 260. It may include.

The broadcast signal receiver 210 may include a multimedia object and receive a broadcast signal according to a unidirectional broadcast transmission format. The broadcast signal processor 220 may convert the received broadcast signal into a broadcast transport stream and output bidirectional service connection information and a multimedia object by using the identification information of the converted broadcast transport stream. The identification information of the broadcast transport stream includes program information or service information such as a program association table (PAT) and a program map table (PMT).

The controller 230 may obtain bidirectional service connection information transmitted according to the multimedia object transmission protocol. The multimedia object may be a multimedia file such as a video / audio. The controller 230 decodes the multimedia object and outputs the decoded multimedia object to the content display unit 240, and the content display unit 240 expresses the output multimedia object and the interactive service information transmitted together with the multimedia object. Can be. The multimedia object output by the content display unit 240 may be displayed with bidirectional service connection information that can be linked according to characteristics of a communication network such as a wireless application protocol (WAP), a short message service (SMS), and a call. . In this case, a call means a communication connection capable of transmitting / receiving wired / wireless sound or an image and includes a telephone service.

The broadcast receiver may identify whether there is a multimedia object expressed from the content display unit 240 and bidirectional service connection information. The bidirectional service connection information expressed with the multimedia object is illustrated in FIGS. 7A, 7B and 8.

The interface unit 260 receives a control signal for connecting the bidirectional service using the bidirectional service connection information from the broadcast receiver and outputs the control signal to the controller 230. The interface unit 260 is an optional element in the embodiment of the broadcast signal receiving apparatus.

The controller 230 controls a connection to a server providing a bidirectional service by using a bidirectional service connection signal transmitted together with the displayed multimedia object. The communication unit 250 may connect to a server providing bidirectional services, send a text message, or make a telephone connection according to a control signal of the controller 230.

The communication unit 250 may modulate, encode, and output a signal to be transmitted according to a characteristic of a communication network connected by a control signal of the controller 230. For example, the transmission signal is a signal according to wired / wireless communication protocol, for example, Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Wireless Lan (WLAN), and Wimax (Worldwide). It may be a signal according to wired / wireless communication protocol such as interoperability for microwave access. In addition, the communication unit 250 may receive a received signal according to the above communication protocol through a communication network.

Accordingly, the broadcast receiver may receive various multimedia service files from a server providing an interactive service, participate in a broadcast program according to an interactive service through a text message, or perform a telephone connection through wireless communication.

When the communicator 250 receives a hypertext markup language (HTML) file from a server providing a bidirectional service, for example, the communicator 250 processes a received signal including an HTML (hypertext markup language) file received from a communication network. It can be output to the controller 230.

 The controller 230 may decode and output the interactive service content received from the service provider providing the interactive service from the received signal. In addition, the content display unit 240 may display the interactive service content decoded by the control unit 230.

The broadcast signal transmission / reception method and the broadcast signal transmission / reception apparatus according to the present invention may implement a bidirectional service broadcast by using a unidirectional broadcast service. In addition, the bidirectional service connection information for the bidirectional service broadcast is included in the content itself or the transmitted content format without being included in the explicit transmit / receive channel according to the broadcast transmit / receive standard so that the receiver can decode and obtain the broadcast content. Alternatively, the multimedia object may be transmitted together with the multimedia object, but the bidirectional service information may be obtained by using an unspecified area or an unused area of the multimedia object transport protocol. Therefore, whatever broadcast transmission and reception standards are used, it is possible to implement bidirectional services while maintaining compatibility.

It is easy for a person skilled in the art to change or modify the present invention from the present specification. Therefore, although an embodiment of the present invention has been described above clearly, various modifications thereof should be made without departing from the spirit and the scope of the present invention.

The effects of the broadcast signal transmission and reception method and the broadcast signal transmission and reception apparatus according to the present invention described above are as follows.

According to the broadcast signal transmission and reception method and the broadcast signal transmission and reception apparatus according to the present invention, it is possible to implement a two-way data broadcast using a unidirectional broadcast standard, it is possible to receive the content desired by the broadcast receiver.

According to the broadcast signal transmission / reception method and the broadcast signal transmission / reception apparatus according to the present invention, it is possible to connect and utilize data broadcasting with content or a provided multimedia object, and bidirectional service connection information for data service according to any broadcast transmission / reception standard. Can be provided.

Claims (14)

Generating a multimedia object transport stream comprising a header field in which a data structure of a multimedia object is set, an additional information field in which bidirectional service connection information is set, and a data field including the multimedia object; Converting the generated multimedia object transport stream into a broadcast transport stream; And And transmitting the broadcast transport stream as a broadcast signal according to a unidirectional broadcast transmission format. The method of claim 1, The multimedia object transport stream is a broadcast signal transmission method according to the multimedia object transfer (MOT) protocol. The method of claim 2, The bidirectional service connection information is set in a variable length field of a side information field. The method of claim 2, The bidirectional service connection information is set in a reserved area of the multimedia object transfer (MOT) protocol. The method of claim 1, In the bidirectional service, the connection information is URL (uniform resource locator) information. The method of claim 1, The bidirectional service connection information is any one of an IP (internet protocol) address and a domain name. Receiving a broadcast signal according to a unidirectional broadcast transmission format; Converting the received broadcast signal into a multimedia object transport stream and obtaining bidirectional service connection information and a multimedia object from the converted multimedia object transport stream; And And connecting to a server providing a data service using the bidirectional service connection information. The method of claim 7, wherein The multimedia object transport stream is a broadcast signal reception method according to the multimedia object transfer (MOT) protocol. The method of claim 8, And the bidirectional service connection information is set in a variable length field of the additional information field. The method of claim 8, The bidirectional service connection information is set in a reserved area of the multimedia object transfer (MOT) protocol. The method of claim 7, wherein The bidirectional service connection information is any one of an IP (internet protocol) address and a domain name. The method of claim 7, wherein In the bidirectional service, the connection information is URL (uniform resource locator) information. A broadcast signal receiver for receiving a broadcast signal according to a unidirectional broadcast transmission format; A broadcast signal processing unit converting the received broadcast signal into a broadcast transport stream and obtaining bidirectional service connection information and a multimedia object from the converted broadcast transport stream; A communication unit for transmitting and receiving a signal with a communication network through a bidirectional channel; A controller for decoding the multimedia object output by the broadcast signal processor and controlling the communication unit to communicate with a communication network according to the bidirectional service connection information output by the broadcast signal processor; And And a content display unit for displaying the multimedia object output by the controller. A data generator which generates the interactive service connection information and the multimedia object; A converter for converting the multimedia object transport stream including the bidirectional service connection information and the multimedia object into a broadcast transport stream according to a unidirectional broadcast transport format; And And a transmitter for transmitting the converted stream to a broadcast transmission network.

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