KR20070082460A - A broadcast receiving device, a method for transmitting and receiving broadcast program information, and a data structure for transmitting broadcast program information - Google Patents

Abstract

The present invention relates to a broadcast receiving apparatus, a method for transmitting and receiving broadcast program information, and a data structure for transmitting broadcast program information. As one aspect of the present invention, a broadcast receiving apparatus includes: a DAB decoder for decoding and outputting program information from a demodulated digital multimedia broadcasting signal; A program information decoder for decoding and outputting preview information including a summary of the program among the program information; An EPG engine which processes the broadcast program information output by the program information decoder into a screen output signal; And an EPG output unit capable of displaying preview information among broadcast program information output by the EPG engine. According to the broadcast receiving apparatus, the broadcast program information transmitting and receiving method and the data structure according to the present invention, the user can conveniently obtain information about the broadcast program.

Description

Apparatus for receiving broadcasting, method for transmiting and receiving information of broadcasting program, and data structure for transmiting information of broadcasting program}

1A illustrates an example of a hierarchical structure of a ServiceInformation element among elements of an EPG.

1B illustrates an example of a hierarchical structure of an epg element among elements of an EPG.

2 is a diagram illustrating an example of an XML schema of a mediaDescription element.

3 illustrates an example of an XML schema for an EPG for transmitting a preview item.

4A and 4B are diagrams illustrating an example in which a preview selection item is expressed in an EPG by a broadcast program information transmission / reception method according to the present invention.

5 is a structural diagram of an embodiment of a broadcast receiving device according to the present invention;

<Description of Signs of Major Parts of Drawings>

101: tuner 102: demodulator

103: DAB decoder 104: first storage unit

105: first audio decoder 106: error correction decoder

107: MPEG-2 Demultiplexer 108: Second Audio Decoder

109: video decoder 110: object descriptor decoder

111: BIFS decoder 112: packet decoder

113: data group decoder 114: MOT decoder

115: binary EPG parser 116: XML EPG parser

120: program information decoder 121: EPG engine

122: EPG output unit 123: database

The present invention relates to a broadcast receiving device, a method for transmitting and receiving broadcast program information, and a data structure for transmitting broadcast program information. A method and data structure for transmitting broadcast program information.

Digital multimedia broadcasting has expanded the transmission form of digital audio broadcasting in which analog radio broadcasting is digitized and transmitted.

Digital multimedia broadcasting can extend a transmission form of digital audio broadcasting to transmit a video broadcasting signal in a video compression format and a data broadcasting signal for various information.

Digital multimedia broadcasting includes broadcasting web site (BWS), text information using dynamic label segment (DLS), traffic information by transport protocol experts group (TPEG), and program information including electronic program guide (EPG). The service can be provided to the user.

Digital broadcasting such as the digital multimedia broadcasting described above may include program information in a broadcast signal and transmit the program information, and the viewer may obtain information about a program of each channel.

As an example of program information, the electronic program guide (EPG) may include time, genre information, and the like for each program.

However, program information, such as an electronic program guide of digital broadcasting, does not include program information that allows a user to know the summary of each program in graphical form.

An object of the present invention is to provide a broadcast program information transmission and reception method for allowing a user to conveniently obtain broadcast program information.

Another object of the present invention is to provide a broadcast program information transmission and reception method and a broadcast reception device, which allow a user to know the summary of a program as graphic information or audio information.

It is still another object of the present invention to provide a data structure in a broadcast signal that allows a summary of a program to be viewed in graphical form.

In order to achieve the above object, the present invention comprises the steps of generating preview information containing a summary of the broadcast program; And including the preview information in an electronic program guide (EPG) and transmitting the preview information.

The preview information is preferably a video.

The electronic program guide may be implemented by XML (eXtensible Markup Language).

The preview information may be located in a lower element of a program element or a programGroup element among the elements of the electronic program guide.

The preview information may be located in a lower element of a mediaDescription element among the elements of the electronic program guide.

The element in which the preview information is located may include at least one of an attribute indicating a location where a file including preview information is stored or an attribute indicating a resource type of a file including preview information. It can include an attribute.

In another aspect, the present invention includes the steps of receiving program information including preview information containing a summary of the broadcast program; Decoding the program information; And displaying the preview information on the screen among the program information.

The program information is preferably an electronic program guide (EPG).

The electronic program guide (EPG) may be implemented by XML (eXtensible Markup Language).

In another aspect, the present invention is a DAB decoder for decoding and outputting the program information from the demodulated digital multimedia broadcasting signal; A program information decoder for decoding and outputting preview information including a summary of the program among the program information; An EPG engine which processes the broadcast program information output by the program information decoder into a screen output signal; And an EPG output unit capable of displaying preview information among broadcast program information output by the EPG engine.

In another aspect, the present invention provides a data structure of a broadcast signal for transmitting broadcast program information, comprising: an epg element containing information related to program scheduling; And a preview element capable of implementing a summary of the broadcast program in a lower element of the epg element as a video.

The preview element may be located in a child element of a program element or a programGroup element.

The preview element may be located in a child element of the mediaDescription element.

The preview element may include at least one of an attribute indicating a location of a file for previewing or an attribute indicating a resource type of a file for previewing. Can be.

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

In order to easily describe the present invention, an electronic program guide (hereinafter referred to as EPG) of digital multimedia broadcasting will be described as an example, but the present invention is not limited thereto. In the following description, broadcasting program information in which a summary of the broadcasting program can be viewed as graphic information is called a preview.

The EPG provides the program information according to the channel to the user and the program information so that the user can watch or record the program using the information. Accordingly, the EPG may include a channel, a program name, a broadcast time, and the like.

In general, the EPG is transmitted in the form of an encoded binary, and the EPG may be implemented by decoding the transmitted binary or may be implemented on the screen by implementing the transmitted binary information in XML (eXtensible Markup Language).

The EPG may have a structure including a plurality of elements. Hereinafter, an EPG implemented in XML will be described as an example to easily describe the element structure of the EPG. However, the present invention is not limited to an EPG implemented in XML.

The EPG may include service information containing broadcasting station and channel information and program information containing information related to program scheduling.

The EPG may include a ServiceInformation element as a top element of the service information, and an epig element as a top element of the program information.

1A shows an example of a hierarchical structure of a ServiceInformation element among elements of an EPG.

An example of a ServiceInformation element will be described with reference to FIG. 1A. The numerals shown in each element block in FIG. 1A indicate the number of elements. For example, 0 ... * indicates that the element is zero or more, and 1 ... * indicates that the element is one or more.

ServiceInformation is used as a container for ensemble elements.

The ensemble element may include a frequency element including frequency information and a service element meaning individual broadcasting.

The ensemble element or service element may include a serviceNameGroup element, a media description element, a conditional access (CA) element, a keyword element, a link element, and the like.

The serviceNameGroup element may include a short name, a medium name, a long name, etc. for the ensemble.

The mediaDescription element may contain a description of the ensemble, and the CA element may include scramble information. Also, the keywords element and the link element may each include corresponding information.

In addition, the service element may include a service ID element that can distinguish the service, a genre element indicating the classification of the service, an epigLanguage element indicating the language of the service, and the like.

EPG data may be encoded in binary numbers and transmitted in a multimedia object transfer (MOT) protocol.

1B illustrates an example of a hierarchical structure of an epg element. The epg element will be briefly described with reference to FIG. 1B as follows.

The epg element may include a schedule element, a program element, a programGroups element, and an alternateSource element.

The schedule element contains information about placing a program in a given time range. In addition, a scope element and a service scope element may be included below the scope element.

The programGroups element can be used to describe groupings of programs, events of programs in groups, and so on.

The alternateSource element indicates whether EPG information from another source can be received and used.

The programGroup element under the program and programGroups elements includes the scheduleNameGroup element, the mediaDescription element, the genre element, the keywords element, the memberOf element, the link element, etc. It may include.

The mediaDescription element of the enumerated elements includes a multimedia element so that multimedia information about a program can be transmitted.

2 is a diagram illustrating an example of an XML schema of a mediaDescription element. An example of a schema of the mediaDescription element will be briefly described with reference to FIG. 2.

A multimedia linked to a resource can be transmitted through a mediaDescription element. Among the attributes of the mediaDescription element, a "url" attribute indicates a location of a resource including the multimedia information.

According to simpleType in the schema of the mediaDescription element of FIG. 2, multimedia information that can be transmitted by the element is mainly defined as a logo image related to ensemble, service, program, programgroup, and programevent.

The example of the schema of FIG. 2 may define whether the logo image is a mono image, a color image, or the shape of the logo image is square or rectangular.

The size of the multimedia is defined by the width and height of the multimedia. However, in the mediaDescription element according to the example of FIG. 2, the program information may only be used when transmitting a logo image of the program, and the user may not preview the summary of the program in graphic form.

Therefore, in the preferred embodiment of the method for transmitting broadcast program information according to the present invention, the broadcast program information may be transmitted so that the user may preview a brief content of a program among the transmitted program information in graphic form.

In order to easily describe an embodiment of a method for transmitting broadcast program information according to the present invention, FIG. 3 illustrates an example of an XML schema of an EPG for transmitting a preview item which is program summary information in a graphic form.

 An embodiment of a method of transmitting broadcast program information according to the present invention will be described with reference to FIG. 3.

In the example of FIG. 3, the mediaDescription element is a preview element representing program summary information in a graphic form, and may include a videoclip element.

The videoclip element may have a newly defined type (represented as videoclipType in FIG. 3). videoclipType can include two attributes.

The "mimeValue" attribute defined as mimeType may indicate a resource of a file to be transmitted, and may represent a graphic form of a preview as a string. That is, the videoclip element may have resource information for previewing as a "mimeValue" attribute, for example, a file extension name.

In addition, the "url" attribute may be defined as urlType to indicate a location of a resource, which is a program summary information in a graphic form, as a string representing an address or a protocol. That is, the videoclip element may have location information where the preview resource is located as the "url" attribute.

3 illustrates an example in which the program information content by preview is included in the mediaDescription element, and the program information about the preview may be located below the epg element in the hierarchical structure of the EPG. Preferably, the program information for the preview is a subordinate of the program element or programGroup element in the hierarchical structure, and may be located at the same position as the mediaDescription element.

Therefore, the broadcast program information transmission method according to the present invention can be included in the electronic program guide for transmitting the program information for preview to the user to transmit.

4A and 4B are diagrams illustrating an example in which a preview selection item is expressed in an EPG by a broadcast program information transmission and reception method according to the present invention.

In the example of FIG. 4A, the EPG may display a preview selection item on the screen. When the user selects the "BB1" program that is broadcast from 19:00 to 20:30 on the B channel (indicated by a bold line), the preview selection for the "BB1" program is displayed in the EPG screen (FIG. 4A). The bottom of the EPG).

When the user selects a preview selection item for the "BB1" program, the broadcast reception device may display an image summarizing the "BB1" program on the screen as shown in FIG. 4B.

If the program selected by the user does not include the preview selection item, unlike the example shown in FIG. 4B, the preview selection item may not be displayed on the screen.

4B shows that when the icon in the preview screen is selected, the preview video can be played back with 56k or 300k quality.

According to a preferred embodiment of the broadcast receiving device and the broadcast program information transmission and reception method according to the present invention, the preview may be displayed on the screen as a video. When the user selects the preview, the broadcast reception device determines whether the mimeType of the "mimeValue" attribute in the EPG can be decoded. The preview file may be received from the location where the preview file is stored by the "url" attribute, and the image may be reproduced by displaying the image on the screen.

If the schema for the preview is located in the mediaDescription element, the preview options appear in the screen of FIG. 4B. Thus, as described above, the hierarchical position of the preview selection item displayed on the screen may vary according to the position on the schema of the EPG.

5 is a structural diagram of an embodiment of a broadcast receiving device according to the present invention. An embodiment of a broadcast receiving apparatus according to the present invention will be described with reference to FIG. 5 as follows.

The tuner 101 may tune a signal corresponding to an ensemble among broadcast signals including program information, and convert the frequency into a baseband for output.

The demodulator 102 may output a transmission frame including a synchronization channel, a fast information channel (FIC), and a main service channel (MSC) by demodulating the modulated signal according to the transmission scheme.

The DAB decoder 103 decodes the fast information channel (FIC), extracts an ensemble label, a service label, and a virtual channel number assigned to the service, and generates a channel map from the extracted information. Can be stored in the first storage unit 104.

The DAB decoder 103 may decode the MSC to extract actual data. If the extracted data is an audio signal, the DAB decoder 103 may output the first audio decoder 105, and output the error correction decoder 106 if the extracted data is an audio signal.

The first audio decoder 105 may decode and output a compressed coded audio signal of a coding scheme such as masking pattern adapted universal sub-band integrated coding and multiplexing (MUSCAM).

The error correction decoder 106 may perform error correction on the data stream and output the result to the MPEG-2 demultiplexer 107.

The MPEG-2 demultiplexing unit 107 performs transport packet depacketizing, packetized element stream (PES) depackaging, and sync layer (SL) depacketizing on the error corrected data stream. The data may be separated into audio, video, object description, and binary format for scenes (BIFS) data, and then output to the decoders 108, 109, 110, and 111 of each data.

The decoders 108, 109, 110, and 111 may decode and output audio, video, object descriptors, and BIFS data in consideration of the format of each data. As an example, the second audio decoder 108 decodes the audio signal with a bit slice arithmetic coding (BSAC) decoding algorithm, and the video decoder 409 decodes the video signal with a H.264 decoding algorithm.

On the other hand, the data related to the program information is input to the program information decoders 120 and 112 by the MSC information decoded by the DAB decoder 103.

The program information decoder 120 may include a packet decoder 112, a data group decoder 113, a MOT decoder 114, a binary EPG decoder 115, and an XML EPG parser 116.

The packet decoder 112 may extract and output data transmitted by a transmission protocol in units of packets. The data group decoder 113 may group and output data output from the packet decoder 112.

The MOT decoder 113 may output the grouped data in a file format by a multimedia object transfer (MOT) algorithm.

 The binary EPG decoder 115 may generate an EPG file that may be implemented in XML by parsing the binary EPG syntax.

The XML EPG parser 116 may parse and output the generated EPG file in XML format.

In addition, the XML EPG parser 116 may parse an XML schema including broadcast program information for preview.

The EPG engine 121 may store the result parsed by the XML EPG parser 116 in the database 123 and process the result.

As described above, since XML is an example of an EPG implementation means, if the EPG is not implemented in XML, the XML EPG parser 116 is not necessarily provided in the broadcast receiving apparatus according to the present invention. Element.

The EPG output unit 122 may output the EPG information stored or processed by the EPG engine on the screen. The preview selection item may be displayed on the screen through the EPG output unit 122. When the user selects a preview selection item for a program, the summary content of the program may be displayed on the screen as described in detail with reference to FIGS. 4A and 4B in graphic form, for example, as a video.

As an example of the broadcast program according to the present invention, the preview is to provide graphic program information to the user. When the location of the sound file such as mp3 is defined by the "url" attribute, the user has an executable program for the sound file. If you do, you may hear a summary of the program.

Therefore, 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 should be made without departing from the spirit and the scope of the present invention.

The effects of the broadcast reception device, the broadcast program information transmission and reception method, and the data structure according to the present invention described above are as follows.

First, according to the broadcast receiving apparatus, the broadcast program information transmitting and receiving method and the data structure according to the present invention, the user can conveniently obtain information about the broadcast program.

Second, according to the broadcast receiving apparatus, the broadcast program information transmission / reception method, and the data structure according to the present invention, the user may previously understand the information in graphic form or the summary of the program in an auditory manner.

Claims (23)

Generating preview information containing a summary of the broadcast program; And And transmitting the preview information in an electronic program guide (EPG). The method of claim 1, The preview information is a broadcast program information transmission method, characterized in that the video. The method of claim 1, The electronic program guide may be implemented by XML (eXtensible Markup Language). The method of claim 1, And the preview information is located in a lower element of a program element or a programGroup element among the elements of the electronic program guide. The method of claim 1, And the preview information is located in a lower element of a mediaDescription element among the elements of the electronic program guide. The method of claim 1, The preview information may be at least one of an attribute indicating a location where a file including the preview information is stored or an attribute indicating a resource type of a file including preview information. Broadcast program information transmission method comprising a. Receiving program information including preview information containing a summary of the broadcast program; Decoding the program information; And Broadcasting program information receiving method comprising the step of displaying the preview information of the program information on the screen. The method of claim 7, wherein The preview information is a broadcast program information receiving method, characterized in that the video. The method of claim 7, wherein And the program information is an electronic program guide (EPG). The method of claim 7, wherein The electronic program guide (EPG) is a broadcast program information receiving method, characterized in that implemented by XML (eXtensible Markup Language). The method of claim 9, The preview information is how the program information received, characterized in that located in the child element of the element (element) or program element programGroup elements of the electronic program guide. The method of claim 9, And the preview information is located in a lower element of a mediaDescription element among the elements of the electronic program guide. The method of claim 9, The preview information may be one or more attributes of an attribute indicating a location of a file including the preview information or an attribute indicating a resource type of a file including preview information. Broadcast program information receiving method comprising a). A DAB decoder for decoding and outputting program information from the demodulated digital multimedia broadcasting signal; A program information decoder for decoding and outputting preview information including a summary of the program among the program information; An EPG engine which processes the broadcast program information output by the program information decoder into a screen output signal; And And an EPG output unit capable of displaying preview information among broadcast program information output by the EPG engine. The method of claim 14, And the preview information expressed by the EPG output unit is implemented as a video. The method of claim 14, The program information decoder includes a binary EPG parser capable of converting and receiving received binary type program information into XML (eXtensible Markup Language). The method of claim 14, And the preview information is located in a lower element of a program element or a programGroup element among the elements of the program information. The method of claim 14, And the preview information is located in a lower element of a mediaDescription element among the elements of the program information. The method of claim 16, The preview information may be at least one of an attribute indicating a location of a file including the preview information or an attribute indicating a resource type of a file including preview information. Broadcast receiving apparatus comprising a. In the data structure of a broadcast signal for transmitting broadcast program information, An epg element containing information related to program scheduling; And And a preview element for implementing a summary of the broadcast program in a lower element of the epg element as a moving image. The method of claim 20, And the preview element is located in a child element of a program element or a programGroup element. The method of claim 20, And the preview element is located in a child element of a mediaDescription element. The method of claim 20, The preview element includes at least one of an attribute indicating a location of a file to preview or an attribute indicating a resource type of a file to preview. Data structure.

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