JP2006325134A - Meta data distribution device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a meta data distribution device capable of distributing meta data regarding contents of a key station to a receiver as meta data of contents of its own station in the case of performing server type broadcast using the contents of the key station and the meta data regarding the contents in network programs using a broadcast network in network stations except the key station. <P>SOLUTION: Since the meta data of the contents of the network programs to be broadcast via the network in its own station is extracted, converted from the meta data of the contents of the key station using an extraction conversion table 105b and a station unique data 105c and the extracted and converted meta data is distributed, the meta data of the contents of the key station is distributed to the receiver as the meta data of the contents of its own station. Thus, the server type broadcast is performed using the meta data of the contents of the key station in the network programs to be broadcasted via the network in the network stations except the key station. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a metadata distribution device for distributing content metadata in a server-type broadcast system.

  In recent years, digital broadcasting has already been put into practical use in BS (Broadcasting Satellite), CS (Communication Satellite), and terrestrial broadcasting. As an optional service for digital broadcasting, server-type broadcasting, which is scheduled to start broadcasting, is considering a service that stores and uses content such as broadcast video and information related to the content in a receiver.

  The service uses content metadata such as content title, general content information such as overview, content location information, content video stream section information, etc. It is expected that services such as digest viewing for resolving the location on the content transmission path, reproducing a part of the video stream of the accumulated content, and extracting and viewing only the highlight will be performed.

  Conventionally, in terrestrial broadcasting, a uniform program (content) nationwide and a program unique to the region (content) are usually mixed. In order to realize this mixture, a form of supplying programs (contents) is formed by forming a broadcasting network with a plurality of broadcasting stations as net stations centered on a master station called a key station. Broadcasts programs (contents) and distributes them over a broadcast network via lines. In network stations other than key stations, the station's own program (contents) and the network program (contents) from the broadcast network are mixed according to their respective time schedules and broadcast as their own programs (contents). .

  As a method of linking program information such as EPG (Electronic Program Guide), there is a method of replacing the program information of the linked station and the program information of the own station (for example, see Patent Document 1).

WO2002 / 078225 publication

  In server-type broadcasting, content-related metadata is also distributed to receivers in order to provide services such as content navigation to users, location resolution on content transmission paths, and digest viewing of video streams of content. Is expected.

  When server-type broadcasting, which is an optional service for digital broadcasting, is performed for terrestrial broadcasting, network stations other than the key stations do not produce costly server-type broadcasting content and metadata related to the content, but are described above. As described above, in a net program using a broadcast network, it is assumed that server-type broadcasting is performed using content of a key station and metadata regarding the content.

  For this purpose, the network other than the key station not only broadcasts the content of the key station from the broadcast network as its own content, but also receives metadata about the content of the key station as metadata about the content of the local station. A new mechanism for distribution to the machine is required.

  The present invention has been made in view of such circumstances, and performs server-type broadcasting using contents of a key station and metadata regarding the contents in a network program using a broadcasting network in a network station other than the key station. It is an object of the present invention to provide a metadata distribution apparatus that can distribute metadata relating to content of a key station as metadata of content of the local station to a receiver.

The above object is achieved by the following configuration.
(1) In a metadata distribution apparatus that distributes content metadata in a server-type broadcasting system, extraction conversion that defines content information and conversion information of a net program that is broadcast on the Internet by the local station based on the organization data of the net station Extraction conversion table generation means for generating a table, and meta data for extracting and converting the content metadata of the net program broadcast on the local station from the metadata of the content of the key station using the extraction conversion table and station specific data A data extraction / conversion unit; and a metadata distribution unit that distributes the metadata extracted and converted by the metadata extraction / conversion unit.

(2) In the metadata distribution device according to (1), the network station organization data includes a service ID that represents an identifier of a service of a network station that broadcasts content, and an event ID that represents an identifier of an event of the content. A start time indicating the start time of the content, an end time indicating the end time of the content, an N / L indicating whether the content is a content of a net program or a content of a local program, and a key for broadcasting the content And a key station service ID representing an identifier of the service of the station.

(3) In the metadata distribution apparatus according to (1) or (2), the station-specific data includes a broadcaster representing a broadcaster, a network ID representing a network identifier, and an identifier of a transport stream. And a transport stream ID representing.

  According to the metadata distribution apparatus described in (1) above, the metadata of the content of the net program broadcast on the local station is extracted and converted from the metadata of the content of the key station using the extraction conversion table and the station specific data. Since the extracted and converted metadata is distributed, the content metadata of the key station can be distributed to the receiver as the content metadata of the local station. As a result, it is possible to perform server-type broadcasting by using the metadata of the content of the key station in a net program broadcast on the net at a net station other than the key station.

  According to the metadata distribution device described in (2) above, the same effect as that obtained by the metadata distribution device described in (1) can be obtained.

  According to the metadata distribution device described in (3) above, the same effect as that obtained by the metadata distribution device described in (1) can be obtained.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a main configuration of a server type broadcast system including a metadata distribution apparatus according to the present embodiment.

  Referring to FIG. 1, a server-type broadcasting system 100 according to the present embodiment includes a key station broadcasting apparatus 101 that sends a key station metadata set 102 related to key station content to a broadcast network, and a key station metadata set. 102 and a metadata distribution apparatus 105 that is supplied with network station organization data 103 and outputs a set 104 of network station metadata.

  The metadata distribution apparatus 105 generates an extraction conversion table generation unit that generates an extraction conversion table 105b that defines content information and conversion information of a net program that is broadcast on the network at the network station based on the organization data 103 of the network station. 105a, the extraction conversion table 105b generated by the extraction conversion table generation unit 105a, the station specific data 105c defining the station specific information, the contents of the key station using the extraction conversion table 105b and the station specific data 105c Is extracted and converted by the metadata extraction / conversion unit 105d for extracting and converting the content of the content of the Internet program broadcast on the own station from the metadata (metadata set 102 of the key station), and the metadata extraction / conversion unit 105d. A metadata distribution unit 105e for distributing the received metadata.

  In FIG. 1, the key station metadata set 102 transmitted from the key station broadcasting apparatus 101 to the broadcasting network describes information about the contents of the key station. FIG. 2 and FIG. 3 show examples of metadata describing information related to contents in the key station metadata set 102. FIG. 2 is an example in which metadata representing general information related to content is described. One line represents metadata of general information related to one content. In the first line 201 of FIG. 2, the item “metadata type” 202 representing the type of content metadata is “ProgramInformation”, and the item “content identifier” 203 representing the content identifier is set by the broadcaster. aaa.co.jp, the content is “Crid: //aaa.co.jp/aaa” representing aaa, and the item “title” 204 representing the title of the content indicates “drama special”.

  FIG. 3 is an example in which metadata representing the location related to the content is described, and one line represents the metadata of the location related to one content. In the first line 301 of FIG. 3, the “metadata type” 302 representing the type of content metadata is “ProgramLocation”, and the item “content identifier” 303 representing the content identifier is set by the broadcaster to aaa. .co.jp, the content is “Crid: //aaa.co.jp/aaa” indicating aaa, and the item “start time” 304 indicating the start time of the content is the absolute time of the broadcast start of the content in 2005 “2005/01/30 09:00:00” representing January 30, 9:00:00, and the item “end time” 305 representing the end time of the content is the absolute time of the end of the content broadcast. It is “2005/01/30 10:00:00” representing 10:00:00 on January 30th, and the item “location” 306 representing the location on the content transmission path is the location of the location on the content transmission path. Network identifier is 1234, transport stream identifier 2345, service identifier 3456, an event identifier represents a 4567: show that it is a "arib // 1234/2345/3456/4567".

  Here, in FIG. 1, the extraction conversion table generation unit 105 a defines an extraction conversion table that defines information and conversion information of contents of a net program that is broadcast on the net station at the net station based on the network station data 103. 105b is generated and passed to the metadata extraction / conversion unit 105d. The metadata extraction / conversion unit 105d extracts and converts metadata according to the extraction conversion table 105b from the key station metadata set 102 sent from the key station broadcasting apparatus 101 to the broadcast network, and extracts the metadata of the network station as the extraction conversion result. The data set 104 is output. The metadata distribution unit 105e sends a collection 104 of net station metadata, which is an extraction conversion result, in real time.

  FIG. 4 is an example of the network station organization data 103, and one row represents the organization data of one content. In the first line 401 of FIG. 4, the item “service ID” 402 representing the identifier of the service of the network station that broadcasts the content is “7654”, and the item “event ID” 403 representing the identifier of the event of the content is The item “start time” 404 which is “6544” and represents the start time of the content represents the broadcast start of the content in the absolute time “2005/01/30 09: The item “end time” 405 indicating the end time of the content is “000: 00”, and the broadcast end of the content is expressed in absolute time as “30/01/2005 10:00:00” "00:00", and the item "N / L" 406 indicating whether the content is a content of a net program or a content of a net program, that is, a content of a local program, is a "net program" and is a key station that broadcasts the content An item representing the service identifier of “Key station service” ID "407, indicating that it is" 3456 ".

  FIG. 5 is an example of the station specific data 105c. The item “broadcasting company” 501 representing the broadcasting company is “bbb.co.jp”, and the item “network ID” 502 representing the network identifier is It is “9876”, and the item “transport stream ID” 503 representing the identifier of the transport stream indicates “8765”.

  Here, in FIG. 1, the extraction conversion table generation unit 105 a that has read the network station organization data 103 and the station specific data 105 c generates an extraction conversion table 105 b that defines the content information and conversion information of the net program.

  FIG. 6 is an example of the extraction / conversion table 105b that defines the content information and conversion information of the net program, and one row represents the extraction / conversion information of one content. In the first line 601 of FIG. 6, the value of the item “start time” 602 indicating the start time of the content to be extracted and converted is “2005/01/30 09:00:00” which is the value of “start time” 404. And “2005/01/30 10:00:00” which is the value of “end time” 405 is set to the value of the item “end time” 603 representing the start time of the content to be extracted and converted, and the content In the value of the item “key station service ID” 604 representing the identifier of the service of the key station that broadcasts “3456”, which is the value of “key station service ID” 407, is set, indicating the broadcaster of the net station The value of the item “broadcaster” 605 is set to “bbb.co.jp” which is the value of the “broadcaster” 501, and the value of the item “location” 606 indicating the location at the network station is “9876” which is the value of the item “network ID” 502 representing the identifier of the network. ”,“ 8765 ”which is the value of the item“ Transport Stream ID ”503 indicating the identifier of the transport stream,“ 7654 ”which is the value of the item“ Service ID ”402 indicating the identifier of the service, and“ “6544” which is the value of “event ID” 403 is merged, and “arib: // 9876/8765/7654/6544” is set.

  Here, in FIG. 1, the metadata extraction / conversion unit 105d to which the extraction conversion table 105b has been passed compares the metadata representing the location of the content shown in FIG. 3 with the extraction conversion table 105b shown in FIG. The metadata of the contents of the Internet program broadcast on the station is extracted and converted. In the range of the value of the item “start time” 304 indicating the start time of the content of the metadata (FIG. 3) representing the location of the content from the key station and the value of the item “end time” 305 indicating the end time of the content, The value of the item “start time” 602 indicating the start time of the content at the net station in the extraction conversion table 105b (FIG. 6) and the value of the item “end time” 602 indicating the end time of the content at the net station are included. , A value representing the service identifier of the item “location” 306 representing the location on the transmission of the content of the metadata representing the location of the content from the key station, and the identifier of the key station service in the extraction conversion table 105b (FIG. 6) The metadata that represents the location of the content that matches the “key station service ID” 604 that represents “” is extracted. From the metadata representing the general information of the content shown in FIG. 2 using the metadata item “content identifier” 303 indicating the location of the content from the extracted key station, the matching item “content identifier” 203 To extract metadata representing general information of the content. A metadata item “content identifier” 203 representing general information of the extracted content, a metadata item “content identifier” 303, an item “start time” 304, and an item “end time” 305 representing the content location. , The item “location” 306 is converted using the extraction conversion table 105b. FIG. 7 shows an example of the extraction conversion result obtained by extracting and converting the metadata representing the general information of the content shown in FIG. 2, and FIG. 8 shows an example of the conversion result obtained by extracting and converting the metadata representing the location of the content shown in FIG.

  In the first line 701 of FIG. 7, the value of the item “metadata type” 702 is set to “ProgramInformation” that is the value of the item “metadata type” 202, and the value of the item “content identifier” 703 is set to , The value “bbb.co.jp” of the item “broadcaster” 605 is added to the value representing the broadcaster of “Crid: //aaa.co.jp/aaa” which is the value of “content identifier” 203. The set “Crid: //bbb.co.jp/aaa” is set, and the value of the item “title” 704 is set to the value “drama special” of the item “title” 704.

  In the first line 801 of FIG. 8, the value of the item “metadata type” 802 is set to “ProgramLocation” which is the value of the item “metadata type” 302, and the value of the item “content identifier” 803 is set to The value “bbb.co.jp” of the item “broadcaster” 605 is added to the value representing the broadcaster of “Crid: //aaa.co.jp/aaa” which is the value of “content identifier” 303. The set “Crid: //bbb.co.jp/aaa” is set, and the value of the item “start time” 804 is set to the value “2005/01/30 09:00:00” of the item “start time” 804. ”Is set, the value of the item“ end time ”805 is set to the value“ 2005/01/30 10:00:00 ”of the item“ end time ”603, and the value of the item“ location ”806 is The value “arib: // 9876/8765/7654/6544” of the item “location” 606 is set.

  As described above, according to the metadata distribution apparatus 105 of the present embodiment, the content of the net program that is broadcast on the Internet from the metadata of the key station content using the extraction conversion table 105b and the station specific data 105c. Therefore, the metadata of the key station content can be distributed to the receiver as the content metadata of the local station. As a result, it is possible to perform server-type broadcasting by using the metadata of the content of the key station in a net program broadcast on the net at a net station other than the key station.

  The present invention automatically uses metadata related to key station contents when performing server-type broadcasting in a network program other than a key station using a content related to the key station and metadata in a network program using a broadcast network. It has an effect that it can be distributed to a receiver as metadata of station contents, and is useful for use in a server type broadcasting system or the like.

The block diagram which shows the principal part structure of the server type | mold broadcast system containing the metadata delivery apparatus which concerns on one embodiment of this invention The figure which shows the example which described the metadata showing the general information regarding the content in the said embodiment The figure which shows the example which described the metadata showing the location regarding the content in the said embodiment The figure which shows the example of the organization data of the net station in the said embodiment The figure which shows the example of the station specific data in the said embodiment The figure which shows the example of the extraction conversion table which defined the content information and conversion information of the net program in the said embodiment The figure which shows the example of the extraction conversion result of the metadata showing the general information of the content in the said embodiment The figure which shows the example of the extraction conversion result of the metadata showing the location of the content in the said embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Server type broadcasting system 101 Key station broadcasting apparatus 102 Key station metadata set 103 Net station organization data 104 Net station metadata set 105 Metadata distribution apparatus 105a Extraction conversion table generation unit 105b Extraction conversion table 105c Station Specific data 105d Metadata extraction / conversion unit 105e Metadata distribution unit

Claims (3)

In a metadata distribution device that distributes content metadata in a server-type broadcast system,
An extraction conversion table generating means for generating an extraction conversion table that defines information and conversion information of contents of a net program broadcast on the network based on the organization data of the net station;
Metadata extraction / conversion means for extracting / converting metadata of content of a net program broadcast on the Internet from the metadata of content of a key station using the extraction conversion table and station-specific data;
Metadata distribution means for distributing metadata extracted and converted by the metadata extraction and conversion means;
A metadata distribution apparatus comprising:   The organization data of the network station includes a service ID that represents an identifier of the service of the network station that broadcasts the content, an event ID that represents an identifier of the event of the content, a start time that represents the start time of the content, An end time indicating an end time, an N / L indicating whether the content is a content of a net program or a local program, and a key station service ID indicating an identifier of a service of a key station that broadcasts the content. Item 4. The metadata distribution device according to Item 1.   The metadata according to claim 1, wherein the station-specific data includes a broadcaster representing a broadcaster, a network ID representing a network identifier, and a transport stream ID representing a transport stream identifier. Distribution device.

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