WO2006054331A1 - デジタル放送受信装置、デジタル放送送信装置、及びデジタル放送送受信システム - Google Patents
デジタル放送受信装置、デジタル放送送信装置、及びデジタル放送送受信システム Download PDFInfo
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- WO2006054331A1 WO2006054331A1 PCT/JP2004/017011 JP2004017011W WO2006054331A1 WO 2006054331 A1 WO2006054331 A1 WO 2006054331A1 JP 2004017011 W JP2004017011 W JP 2004017011W WO 2006054331 A1 WO2006054331 A1 WO 2006054331A1
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- Prior art keywords
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- digital broadcast
- content
- program information
- binary data
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/25—Arrangements for updating broadcast information or broadcast-related information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/68—Systems specially adapted for using specific information, e.g. geographical or meteorological information
- H04H60/73—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H04N21/2353—Processing of additional data, e.g. scrambling of additional data or processing content descriptors specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]
Definitions
- Digital broadcast receiver, digital broadcast transmitter, and digital broadcast transmitter / receiver system Digital broadcast receiver, digital broadcast transmitter, and digital broadcast transmitter / receiver system
- the present invention relates to a digital broadcast receiver, a digital broadcast transmitter, and a digital broadcast transmission / reception system.
- the metadata may include segment metadata, which is information about the segment of the content stream separated by a specific time. Recently, segment metadata is used to search for scenes separated by specific times in the content, and rearrange and replace them before segment playback for non-linear viewing.
- segment group information which is a group of multiple segments derived from different programs, as metadata, nonlinear playback control of the content group is realized.
- the digital broadcast receiver disclosed in Patent Document 1 receives broadcast data and separates the received broadcast data into first program information metadata and content. Further, based on the contents of the program information schema that preliminarily defines the data structure of the program sequence information, the first program information metadata is associated with the attributes and contents of the first program information metadata by tags. Convert to second program information metadata, and store the second program information metadata and content. Then, program information or content is reproduced based on the interpretation result of the contents described in the second program information metadata.
- a metadata schema representing the structure of metadata for content data is stored in the metadata schema storage unit.
- the content fragmentation unit generates fragmented data for selecting a specific fragment from the continuous data sent by the content storage unit, and sends it to the metadata composition unit.
- the metadata composition unit associates metadata related to a specific piece of continuous data corresponding to the fragmented data with the fragmented data in a format according to the structure of the metadata schema, and associates the metadata with the fragmented data. Combine and output.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2003-124898
- Patent Document 2 Japanese Patent Laid-Open No. 2000-224257
- the present invention has been made to solve the above-described problems, and provides a digital broadcast receiving apparatus, a digital broadcast transmitting apparatus, and a digital broadcast transmitting / receiving system for efficiently storing program information metadata by a simple method. The purpose is to obtain.
- a digital broadcast receiver is transmitted from a digital broadcast transmitter.
- a receiver that receives program information metadata described in XML, a program information metadata, a metadata template that includes tag elements of common and non-common parts, and binary data that includes content parts of non-common parts
- a data decomposition unit, a metadata template and binary data associated with each other and stored in a storage device, a metadata template and binary data are read from the storage device, and the program information metadata is restored using the association information.
- a playback section for playing back content using the program information metadata restored by the Indian section.
- the program information metadata can be efficiently stored and the program information metadata can be easily restored.
- a digital broadcast transmitting apparatus provides program information metadata described in XML, a metadata template including tag elements of a common part and a non-common part, and a binary including a content part of a non-common part.
- a decomposition unit for decomposing the data, and a transmission unit for transmitting the metadata template and binary data decomposed by the decomposition unit to the digital broadcast receiving apparatus are provided.
- the amount of transmission data of the program information metadata can be reduced, and the program information metadata can be efficiently stored in the digital broadcast receiving apparatus.
- the digital broadcast transmission device transmits program information metadata described in XML to the digital broadcast reception device, and the digital broadcast reception device transmits the received program information metadata.
- Metadata templates including tag elements of common parts and non-common parts, and binary data containing content parts of non-common parts, and storing the metadata template and binary data in a storage device in association with each other and playing content
- the storage device metadata template and binary data are read, the program information metadata is restored using the associated information, and the content is reproduced using the restored program information metadata.
- the program information metadata can be efficiently stored in the digital broadcast receiving apparatus, and the program information metadata can be easily restored.
- FIG. 1 is a block diagram showing a configuration of a digital broadcast transmission / reception system according to Embodiment 1 of the present invention.
- FIG. 1 is a block diagram showing a configuration of a digital broadcast transmission / reception system according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing an example of content metadata.
- FIG. 3 is a diagram showing the content metadata shown in FIG. 2 broken down into a metadata template and binary data.
- FIG. 4 A diagram showing the binary data shown in FIG. 3 in the binary table object format defined by ARIB STD-B24.
- FIG. 5 is a block diagram showing a configuration of a digital broadcast transmission / reception system according to Embodiment 2 of the present invention.
- FIG. 6 is a block diagram showing a configuration of a digital broadcast transmission / reception system according to Embodiment 3 of the present invention.
- FIG. 1 is a block diagram showing a configuration of a digital broadcast transmission / reception system 10 according to Embodiment 1 of the present invention.
- the digital broadcast transmission / reception system 10 includes a transmitter (digital broadcast transmission apparatus) 200 and a receiver (digital broadcast reception apparatus) 300.
- the transmitter 200 includes a transmission unit 210
- the receiver 300 includes a reception unit 310, a disassembly unit 320, a storage unit 330, a bind unit 340, a reproduction unit 350, and a storage device 600.
- the storage device 600 may be inside the receiver 300 or may be connected to the receiver 300 via a communication line as an external device.
- the transmitter 200 converts the content metadata (program information metadata) 100 according to the transmission protocol, and then transmits the content metadata (program information metadata) 100 to the receiver 300 via the transmitter 210.
- the transmission protocol can be broadcast wave or data communication like the Internet.
- the transmitted content metadata 100 is received by the receiving unit 310 of the receiver 300.
- FIG. 2 is a diagram showing an example of content metadata 100.
- the content metadata 100 is an XML (extensible Markup Language) document, and its schema is, for example, ARIB STD—B Some are specified in 38 and some are specified in MPEG-7.
- the content metadata 100 includes information such as program title, program content, performer, genre, channel, and broadcast time, which are constituent elements of EPG (Electronic Program Guide) in digital broadcasting.
- the content metadata 100 also includes information (hereinafter referred to as segment metadata) indicating a section obtained by dividing a content stream at a certain time interval. Segment metadata is used for operations such as scene search, rearrangement and replacement of scenes
- the content metadata 100 is decomposed into a metadata template 410 and binary data 420 by the decomposition unit 320.
- a data set 400 is composed of the metadata template 410 and the binary data 420.
- the decomposition unit 320 groups a plurality of content metadata 100 to create a content metadata group, and a common part that repeatedly appears in the content metadata group and a non-common that describes different contents for each content metadata 100 Divide into parts.
- the disassembling unit 320 outputs the tag elements of the common part and the non-common part as the metadata template 410.
- the decomposing unit 320 outputs the difference between the content metadata 100 and the metadata template 410, that is, the content information of the non-common part as binary data 420.
- FIG. 3 is a diagram showing the content metadata 100 shown in FIG. 2 broken down into a metadata template 410 and binary data 420.
- the binary data 420 is a binary table object format file defined by ARIB STD-B24.
- a variable-length record has an area indicating the record length at the beginning and at least one variable-length field. For example, as an example of the format definition of binary data 420, “1, B: lb, B: lb, U: 3b, U: 3b, S : 1V, Z: IV ". This is specifically a 1 byte record length at the beginning of each record.
- Boolean type 1 bit Boolean type 1 from the beginning Bit
- unsigned integer 3 bits unsigned integer 3 bits
- character string variable length Length data 1 byte postal code variable length Length data 1 byte
- FIG. 4 is a diagram showing the binary data 420 shown in FIG. 3 represented by the binary table described above.
- the title character string and start time shown in Fig. 3 are displayed as binary data.
- the information indicating the link with the metadata template 410 is omitted.
- an ID is assigned to each metadata template 410, and the ID is assigned to each binary data 420 as the metadata template 410. It may be inserted as information indicating the link.
- the decomposition processing method may be a method of preliminarily setting and using a schema defined in the standard, or a method of automatically deriving a decomposition rule from the input content metadata 100.
- a processing method may be used.
- the content metadata 100 decomposed into the metadata template 410 and the binary data 420 in the decomposition unit 320 is stored in the storage device 600 by the storage unit 330.
- the storage unit 330 stores the metadata template 410 in the storage device 600 only once. At this time, the storage unit 330 links all the binary data 420 corresponding to the metadata template 410.
- the binding unit 340 reads the data set 400 from the storage device 600, and the portion corresponding to the tag of the binary data 420 linked to the non-common part tag element of the metadata template 410.
- the content information is inserted, the content metadata 100 information is restored, and the content metadata 101 is output.
- the metadata template 410 is used as it is, and there is no need to perform schema interpretation or the like as in the case of using the W3C standard XML schema.
- the playback unit 350 inputs content data 500 such as video Z sound that is separately stored or received in synchronization with the content metadata 101, and controls playback of the content metadata 101.
- the content data 500 is reproduced as information.
- segment playback that searches, rearranges, and replaces scenes for a specific period indicated by the segment information and plays these scenes in a non-linear manner. It can be performed.
- the decomposition unit 320 converts the content metadata 100 into the metadata template 410 including the common part and the non-common part tag elements, and the content information of the non-common part.
- the binary data 420 is decomposed to link the metadata template 410 and the binary data 420, and the same metadata template 410 is not stored redundantly, so the amount of information in the content metadata 100 is reduced. It is possible to accumulate efficiently.
- the binding unit 340 inserts the content information of the portion corresponding to the tag of the binary data 420 that is linked to the non-common part tag element of the metadata template 410 to thereby restore the original content metadata. Since 100 can be restored, the content metadata 100 can be easily combined when playing back content that requires processing such as template schema interpretation.
- binary data 420 is stored as a binary table object format file used in digital broadcasting, it is possible to share the processing modules in the receiver 300. The amount of memory for mounting and the amount of module development can be reduced.
- the disassembly processing of content metadata 100 in disassembly unit 320 is performed by the function of receiver 300.
- the disassembly processing is input from the outside of receiver 300, ARIB. This is done by BML (Broadcast Markup Language) specified in STD—B24.
- FIG. 5 is a block diagram showing a configuration of a digital broadcast transmission / reception system 20 according to the second embodiment of the present invention.
- the same reference numerals as those in FIG. 1 represent the same components.
- BML700 is an ARIB STD-B24 standard BML that describes the processing method when content metadata 100 is decomposed into metadata template 410 and binary table 420. is there.
- the BML 700 transmitted from the transmission unit 210 of the transmitter 250 is received by the reception unit 310 of the receiver 300 and input to the decomposition unit 320 together with the content metadata 100.
- the decomposition unit 320 uses content metadata using an extension function for broadcasting that includes ECMA (European Computer Manufacturer Association) scripts described in BML700 and binary table objects defined in ARIB STD-B24. Data 100 is broken down into a metadata template 410 and binary data 420. Further, the BML 700 may have a script that includes a metadata template document therein. Other operations are the same as those in the first embodiment.
- the BML 700 provides a processing method for decomposing the content metadata 100 into the metadata template 410 and the binary data 420. It is not necessary to have a function for disassembling the content metadata 100.
- the binding unit 340 Even if there is no content, it is possible to reproduce the content using the stored binary data 420.
- the content metadata 100 is decomposed into the metadata template 410 and the binary data 420 in the receiver.
- the content metadata 100 is decomposed in the transmitter.
- FIG. 6 is a block diagram showing a configuration of a digital broadcast transmission / reception system 30 according to the third embodiment of the present invention.
- transmitter 800 has a disassembling unit 820
- receiver 900 does not have a disassembling unit.
- the content metadata 100 is stored in the disassembly section 820 of the transmitter 800 in the metadata template. It is broken down into rate 410 and binary data 420.
- the method of the decomposition process is the same as that by the decomposition unit 320 of the receiver 300 according to the first embodiment.
- This disassembly processing method may be determined by the transmission side (content provider, provider, broadcasting station, etc.) or may be determined by the reception side (user). It may be determined by a server provided by a third party.
- Data set 400 including metadata template 410 and binary data 420 is transmitted to receiver 900 via transmission unit 810.
- the transmission unit 810 transmits the metadata template 410 only once, and transmits only binary data 420 having different content each time.
- the transmission protocol can be a broadcast wave or data communication like the Internet! /.
- the transmitted metadata template 410 and binary data 420 are received by the receiving unit 310 of the receiver 900.
- the Indian part 340 inserts the content information of the portion corresponding to the tag of the linked binary data 420 into the non-common part tag element of the received metadata template 410, and the information of the content metadata 100 is inserted. Restore and output as content metadata 101.
- the following operations are the same as those in the first embodiment.
- the content metadata 100 is decomposed into the metadata template 410 and the binary data 420 in the decomposition unit 820 of the transmitter 800, and the metadata template 410 and the binary data 420 are Since the same metadata template 410 is not redundantly transmitted to the receiver 900, the content metadata 100 can be efficiently transmitted without reducing the amount of information.
- the receiver The content 900 when determining the disassembly processing method of the content metadata 100 on the transmission side such as the content provider, if the BML is transmitted along with the transmission as in the second embodiment, the receiver The content 900 can be played back using the received binary data 420 even without the binding unit 340.
- the user on the receiving side determines the decomposition method of the content metadata 100 in advance, even if the receiver 900 is another device within the area where the transmitter 800 transmits, the content metadata managed by the user
- the same metadata template 410 can be used for data 100, so even if the number of receivers 900 increases, content metadata 1 An increase in the data transmission amount of 00 can be suppressed.
- the processing load on the transmitting side and the receiving side can be reduced.
- the binding unit 340 is linked to the non-common part tag element of the metadata template 410 and inserts the content information of the part corresponding to the tag of the binary data 420 to obtain the original. Since the content metadata 100 can be restored, the content metadata 100 can be easily combined when playing back content that requires processing such as schema interpretation of the template.
- binary data 420 is stored as a binary table object format file used in digital broadcasting, it is possible to share the processing modules in the receiver 900. The amount of memory for mounting and the amount of module development can be reduced.
- the digital broadcast transmission / reception system is suitable for efficiently transmitting and storing content metadata by a simple method.
Abstract
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PCT/JP2004/017011 WO2006054331A1 (ja) | 2004-11-16 | 2004-11-16 | デジタル放送受信装置、デジタル放送送信装置、及びデジタル放送送受信システム |
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Cited By (2)
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EP2012531A3 (en) * | 2007-07-05 | 2009-04-29 | Samsung Electronics Co., Ltd. | Program guide data decoding method and apparatus of digital broadcast receiver |
JPWO2016006431A1 (ja) * | 2014-07-07 | 2017-04-27 | ソニー株式会社 | 受信装置、受信方法、送信装置、及び、送信方法 |
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JPWO2016006431A1 (ja) * | 2014-07-07 | 2017-04-27 | ソニー株式会社 | 受信装置、受信方法、送信装置、及び、送信方法 |
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