KR20120082261A - Integrated processing method of digital broadcasting standard and apparatus for receving a broadcasting signal - Google Patents

Abstract

PURPOSE: A digital broadcast standard integrated processing method and broadcast reception apparatus therefor are provided to syntagmatically process service information data in digital broadcast environment by creating a data transmission table. CONSTITUTION: A parser(505) parses an XML(eXtensible Markup Language) file corresponding to established standard. A table object creation unit(507) creates a table object corresponding to the established standard. A service information request reception unit(509) transmits the PID(Packet Identification) and TID(Table Identification) of a table related to the request to a section filter(109) in case the request is received from an application. A table creation unit(511) creates a table. A service information manager(501) requests the creation of the parsing and the table object to the parser and the table object creation unit.

Description

Integrated processing method for digital broadcasting standard and broadcast receiving device therefor {INTEGRATED PROCESSING METHOD OF DIGITAL BROADCASTING STANDARD AND APPARATUS FOR RECEVING A BROADCASTING SIGNAL}

Embodiments of the present invention relate to a digital broadcasting standard integrated processing method and a broadcast receiving device therefor, and more particularly, to a digital broadcasting standard integrated for integrating a service information data in a digital broadcasting environment in which various standards exist. A processing method and a broadcast receiving device therefor.

Digital broadcasting provides viewers with better video and audio than analog broadcasting, and offers a variety of services and channels. However, as there are various standards for digital broadcasting, each country has to select a standard to use among various standards, and companies that make digital broadcasting devices have to make devices that meet the national standards. Also, in order to export broadcast programs, broadcasters also have to change the data of additional information in accordance with the standards of their respective countries.

In order to solve this problem, researches on integrated middleware to support all digital broadcasting standards have been conducted.

The middleware system for supporting all digital broadcasting standards among the related arts dynamically places a profile of standards to be applied to handle various standard profiles on the top of a common module and provides a common module for integrating them. A method of loading a profile has been proposed. However, the method of dynamically selecting a profile has a disadvantage of slowing down performance.

In addition, a service information processing technique using XML has been proposed. This is significant as a technique for integrating service information, but it has a disadvantage of making the section format of all standard tables in XML, and it is difficult to actually implement it by suggesting an abstract structure. .

In order to solve the problems of the prior art as described above, the present invention is to provide a digital broadcast standard integrated processing method and a broadcast receiving device therefor.

According to a preferred embodiment of the present invention to achieve the above object, a broadcast receiving device for digital broadcast standard integration processing, Parser for parsing an XML file corresponding to the currently set standard of a plurality of standards; A table object generation unit generating a table object corresponding to the currently set standard; A service information request receiver configured to transmit a PID (Packet ID) and a TID (Table ID) of a table related to the request to a section filter when a request is received from an application; A table generator for generating a table using the section having the PID and the TID filtered by the table object and the section filter; And a service information manager requesting the parser and the table object generation unit to parse a file corresponding to the currently set standard and to generate a table object, wherein the service information request receiving unit is configured to generate a table generated by the table generation unit. Provided is a broadcast receiving device, characterized in that for generating data and transferring the data to the application.

Here, a first XML file having location information storing table class files for the plurality of standards and an XML file including a plurality of second XML files having at least one of table name, PID, and TID information for each of the plurality of standards. The storage unit may further include.

The parser parses the first XML file to extract location information storing a table class for the currently set standard, and the table object generator may generate a table object using table class files stored at the location. have.

The table object generation unit may include a table class file storage unit which stores table class files for a plurality of standards; And a table object replication unit receiving the extracted location information from the parser and generating a table object using a table class file stored at the location of the table class file storage unit.

Here, the parser parses a second XML file corresponding to the currently set standard to extract a table name corresponding to the TID associated with the request, and the table generator generates a table corresponding to the table name from the table object generator. The table may be generated by receiving an object and inserting data included in a section having the PID and the TID into the received table object.

The table generator may include a section receiver configured to receive a section having the PID and the TID filtered by the section filter; A table name receiving unit receiving a table name corresponding to the TID from the parser; A table object receiver configured to receive a table object corresponding to the table name from the table object generator; And a section data insertion unit for generating a table by inserting data included in a section having the PID and the TID into the table object.

The table generator may generate the table and store the table in a cache.

The service information request receiving unit may generate data of a form corresponding to the request and the currently set standard using the table stored in the cache and transmit the generated data to the application.

The service information request receiving unit includes a request messenger receiving a request of the application; A request processing unit for transferring the PID and TID of tables related to the request to the section filter; And a table generation confirmation unit for confirming whether a table related to the request is stored in the cache, wherein the request processing unit corresponds to the request and the currently set standard using the table when it is confirmed that the table is stored in the cache. It can generate the data of and deliver it to the application.

The application may request the request messenger for information on a broadcast currently being viewed using the SIManager Class of the JavaTV API.

According to another embodiment of the present invention, there is provided a digital broadcasting standard integrated processing method comprising: parsing an XML file corresponding to a currently set standard among a plurality of standards; Generating a table object corresponding to the currently set standard; When a request is received from an application, transferring a PID (Packet ID) and a TID (Table ID) of a table related to the request to a section filter; Generating a table using the table object and a section having the PID and the TID filtered by the section filter; And generating data using the generated table and delivering the data to the application.

According to the present invention, service information data may be integrated in a digital broadcasting environment in which various standards exist.

1 is a diagram illustrating a data flow process in a digital broadcasting environment.
2 is a diagram illustrating a table supported by a standard of digital broadcasting.
3 is a diagram illustrating a private section format of the MPEG-2 standard.
4 is a diagram illustrating a system of integrated middleware according to an embodiment of the present invention.
5 is a diagram illustrating an example of a broadcast receiving device including a service information module according to an embodiment of the present invention.
6 is a block diagram showing a detailed configuration of a parser according to an embodiment of the present invention.
7 is a block diagram illustrating a detailed configuration of a table object generation unit according to an embodiment of the present invention.
8 is a block diagram illustrating a detailed configuration of a table generator according to an embodiment of the present invention.
9 is a block diagram illustrating a detailed configuration of a service information request receiving unit according to an embodiment of the present invention.
10 is a diagram showing the structure of an XML file according to an embodiment of the present invention.
11 is a flowchart illustrating the overall flow of a digital broadcasting standard integrated processing method according to an embodiment of the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. In describing the drawings, similar reference numerals are used for similar elements. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a data flow process in a digital broadcasting environment.

Referring to FIG. 1, the broadcaster 101 converts data such as service information, DSM-CC, etc. which are audio, video, and additional data into a transport stream (hereinafter, referred to as TS) packet form of the MPEG-2 standard. Multiplexing and transmitting in TS format.

At this time, TS packets including audio and video are loaded on the TS only once for real time broadcasting even if they are lost during transmission, and TS packets containing service information and data of DSM-CC are repeatedly sent to TS in case of loss during transmission. Will be loaded.

At this time, a digital TV or a digital TV set-top box in each home receives TSs of various broadcasters through a tuner (Tuner) 103 and passes TSs corresponding to frequencies of broadcasts that viewers want to see.

Demultiplexing TS through the tuner by Demultiplexer 105 in 188 byte TS packet unit defined in MPEG-2 standard, and referring to Packet ID (hereinafter, referred to as PID) in TS Packet for audio and video In the case of TS Packet having elementary stream data such as PES (Packed Elementary Stream) packet, the packet is sent to the decoding unit 107 and has Program Specific Information (PSI) data such as service information or DSM-CC data. In the case of a TS packet, it is made into a section and sent to the section filter 109.

The decoding unit 107 receiving the PES packet decodes the PES packet to provide audio and video to the viewer. The section filter 109 receiving the PES packet has a PID and Table ID corresponding to a service requested by the viewer. Hereinafter, the sections having the TID) are filtered and the corresponding section is sent to the service interface module 111 if the section is related to the data of the service information table, and is sent to the DSM-CC module 113 if the section is related to the DSM-CC data.

In the service information module 111 and the DSM-CC module 113, each section is stored in a table or file format in accordance with digital broadcasting standards such as DVB-MHP, OpenCable-OCAP, and ATSC-ACAP, and then the data is stored in an application. To provide.

In the digital broadcasting standard, an API for service information is provided as shown in Table 1 below.

Standard Package Class DVB-MHP org.dvb.si SIDatabase
SIRequest
... OpenCable-OCAP org.ocap.si ProgramAssociationTableManager
ProgramMapTableManager
... ATSC-ACAP org.atsc.si ContentIdentification
ISANIdentification
...

Referring to Table 1, DVB-MHP provides the org.dvb.si package, and OpenCable-OCAP provides the org.ocap.si package. ATSC-ACAP also provides the org.atsc.si package.

Each standard uses APIs to provide viewers with the information in the service information table.

2 is a diagram illustrating a table supported by a standard of digital broadcasting.

Referring to FIG. 2, each digital broadcasting standard provides tables provided by the MPEG-2 standard and tables defined by each standard matching the tables.

The MPEG-2 standard tables include a program association table (PAT), a program map table (PMT), a control access table (CAT), and a network information table (NIT). PAT contains information on PMT and NIT, and PMT contains information on audio and video streams. The CAT contains information about the security of the service and the NIT contains information about the network.

All digital broadcasting standards support PAT, PMT, and CAT, but there are standards that do not support NIT. Let's take a look at the tables that contain information on additional services in each other standard.

DVB-MHP standard supports TSDT, SDT, BAT, EIT, RST, TDT, TOT, ST, RNT, DIT, and OpenCable-OCAP standard supports NTT, SVCT, LVCT, MGT, STT, RRT, AEIT, AETT do. And ATSC-ACAP supports MGT, TVCT, CVCT, RRT, EIT, ETT, STT, DCCT, DCCSCT.

3 is a diagram illustrating a private section format of the MPEG-2 standard.

Referring to FIG. 3, although the types of tables supported by each standard are different, the section format of the tables is the same as or slightly modified from the Private Section Format of the MPEG-2 standard.

The private section is divided into a body part including a private_data_byte part and a header part other parts. The header part includes information necessary for parsing, and the body part includes information data to be delivered.

4 is a diagram illustrating a system of integrated middleware according to an embodiment of the present invention.

Referring to FIG. 4, the integrated middleware system 400 includes a section filter 109, a middleware module 110, a porting layer 401, a Java TV API 403, an application ( 405).

The section filter 109 filters the section to a section having a PID and a TID corresponding to a service requested by the viewer, and transmits the filtered section to the middleware module 110.

The middleware module 110 may include a service information module 111 and a DSM-CC module 113. Depending on whether the filtered section is a section related to the service information table or DSM-CC data, each module receives the section and the middleware module 110 stores the section in a table or file format according to each digital broadcast standard. To generate the data.

The JavaTV API 403 includes a JavaTV API applicable to all digital broadcasting standards, and the application 405 functions to allow a user to select a desired service. The porting layer 401 functions to connect the middleware module 110 and the JavaTV API 403.

As with other standards, the JavaTV API is designed for digital broadcasting, but unlike other standards, it is assuming that the hardware platform is unknown.

That is, since the JavaTV API is platform independent, the present invention can use the JavaTV API available in all standards without using a method of integrating APIs supported by all standards.

The JavaTV API includes the javax.tv.graphics package for graphics, the javax.tv.locator package for managing location information for additional data, the javax.tv.media package for media, the javax.tv.util package for timers, and the Application. There is a javax.tv.xlet package that manages the life cycle and a javax.tv.service package that manages the service.

The package related to service information is the javax.tv.service package, which contains 17 classes and three subpackages. The most important class among these is the SIManager class, and the application 405 requests the middleware module 110 for information such as broadcast information and EPG, which are currently viewed through the SIManager class.

In the present invention, porting the SIManager class and the request messenger class in the service information request receiving unit to be described later, the JavaTV API 403 and the middleware module 110 are interworked.

Briefly describing the request messenger serves to receive a request from the application 405 and transmit the request to a class capable of processing the request. That is, it can be said that it serves as a window of the application and the middleware using the JavaTV API (403).

In the following detailed description of the present invention, a broadcast receiving device including a service information module will be described in more detail.

5 is a diagram illustrating an example of a broadcast receiving device including a service information module according to an embodiment of the present invention.

Referring to FIG. 5, the broadcast receiving device 500 according to an embodiment of the present invention may include a service information manager (SI Configuration Manager) 501, an XML file repository 503, and a parser ( 505, a table object creator 507, a service information request receiver 509, a table builder 511, and a cache 513. .

The service information manager 501 requests the parser 505 to parse a file corresponding to the currently set standard from the broadcast receiving device 500 and generates a table object supported by the standard. Ask.

According to an embodiment of the present invention, the standard set in the broadcast receiving apparatus 500 may be set directly by the user in the broadcast receiving apparatus 500, or may be set according to the standard type of TS packet transmitted from a broadcasting station. 500 may be automatically set.

The XML storage unit 503 may include a first XML file having location information where respective table class files for a plurality of standards are stored and a plurality of second XML files having a plurality of standard table names, PIDs, and TID information. Can be.

The parser 505 parses an XML file corresponding to the currently set standard.

According to an embodiment of the present invention, when the parser 505 receives a request from the service information manager 501 to parse the XML file for the currently set standard, the parser 505 parses the first XML to obtain location information of the class for the currently set standard. Can be extracted.

The table object generation unit 507 generates a table object corresponding to the currently set standard.

For example, the table object generation unit 507 receives the information on the currently set standard from the service information manager 501 and requests the parser 505 for location information of the class of the set standard.

Subsequently, the table object generation unit 507 receives the class location information from the parser 505 and generates the table object using the table class files stored at the location.

When the request is received from the application 405, the service information request receiver 509 transmits the PID and TID of the table related to the request to the section filter 109.

Subsequently, the table generator 511 generates a table using the section having the PID and the TID filtered by the table object and the section filter 109 and stores the table in the cache 513. In more detail, the table generator 511 inserts data included in a section into a table object to generate a table.

Here, the cache 513 means a place for storing a table containing data.

In this case, the service information request receiving unit 509 generates data in a form corresponding to the currently set standard using the table stored in the cache 513 and delivers the data to the application 405.

Below. The broadcast reception device 500 will be described in more detail with reference to FIGS. 6 to 9.

6 is a block diagram showing a detailed configuration of a parser according to an embodiment of the present invention.

Referring to FIG. 6, the parser 505 may include a file parser 601, a DOM parser 603, and a parsed data storage 605.

File parser 601 supports methods for parsing files.

The DOM parser 603 is a parser inheriting the file parser 601 and parses an XML file in a Document Object Model (DOM) Tree format, and the parsing data storage unit 605 stores a parsed data.

When the service information manager 501 tells the file parser 601 the path of the files to be parsed corresponding to the currently set standard, the file parser 601 parses the XML files stored in the path specified in the XML storage unit 503. Store the data in the parsing data storage unit 605.

Here, the DOM parser 603 parses the first XML to extract the location information of the table class corresponding to the currently set standard, and parses the second XML to correspond to the PID and TID of the table related to the request of the application 405. You can extract the name of the table you are doing.

7 is a block diagram illustrating a detailed configuration of a table object generation unit according to an embodiment of the present invention.

Referring to FIG. 7, the table object generator 507 may include a table class file storage 701 and a table object cloner 703.

The table class file storage unit 701 stores table class files for a plurality of standards.

When the table object replication unit 703 receives the currently set standard information from the service information manager 501, the table object replication unit 703 receives the location information storing the table classes corresponding to the standard from the parser 505, and the table class file storage unit 701. Create a table object using the table class files stored at this location in the table.

Here, when there is a request for a table object from the outside, the table object replication unit 703 duplicates and transfers the table object.

8 is a block diagram illustrating a detailed configuration of a table generator according to an embodiment of the present invention.

Referring to FIG. 8, the table generator 511 may include a section receiver 801, a table name receiver 803, a table object receiver 805, and a section data inserter 807.

The section receiver 801 receives a section having a PID and a TID of a table for a currently set standard when the section filter 109 detects an event in which the section is filtered.

The table name receiver 803 transmits the TID to the parser 505, and then receives the table name corresponding to the TID from the parser 505.

The table object receiving unit 805 receives the table object corresponding to the table name from the table object generating unit 507 using the received table name.

The section data inserting unit 807 generates a table by inserting data included in the section into the table object and stores the table in the cache 513.

9 is a block diagram illustrating a detailed configuration of a service information request receiving unit according to an embodiment of the present invention.

Referring to FIG. 9, the service information request receiving unit 509 may include a request messenger 901, a request processing unit generating unit 903, a request processing unit 905, and a table generation checking unit 907.

The request messenger 901 receives a request from the application 405.

According to an embodiment of the present invention, the application 405 may request the request messenger 901 for information on the broadcast currently being viewed using the SIManager Class of the JavaTV API applicable to all of the plurality of standards.

The request processing unit generation unit 903 generates a request processing unit 905 corresponding to the currently set standard, and the request processing unit 905 transfers the PID and SID of the tables related to the request of the application 405 to the section filter 109. .

The table creation checker 907 checks whether the table associated with the request is stored in the cache 513. The request processor 905 uses the table when the table is stored in the cache 513. ) And data in the form corresponding to the currently set standard is transmitted to the application 405.

10 is a diagram showing the structure of an XML file according to an embodiment of the present invention.

FIG. 10A illustrates a structure of a first XML file having location information in which a table class file is stored for each standard.

Referring to FIG. 10 (a), there is a top-level tag called standards, and one or more standard tags may be included therein. There is only one name tag and path tag in the standard tag. Where name is the name of the standard and path is the location information, or path, where the standard table class files are stored.

FIG. 10 (b) is a diagram illustrating a second XML file of the MPEG standard among the second XML files storing the table and the PID and TID of the table for each standard. The second XML file is created for each standard, and for each standard. Are made by the same rules.

Referring to FIG. 10 (b), there is a standard tag as a top tag, and the tag includes one or more table tags. One or more table tags are provided because they provide a name attribute indicating the name of the table and the number of PIDs and TIDs corresponding to the table is different.

 11 is a flowchart illustrating the overall flow of a digital broadcasting standard integrated processing method according to an embodiment of the present invention. Hereinafter, a process performed at each step will be described with reference to FIG. 11.

In operation S1100, a first XML file having location information storing table class files for a plurality of standards and a plurality of second XML files having table names, PIDs, and TID information for each of the plurality of standards are maintained.

In step S1105, the first XML is parsed to extract location information in which a table class for a currently set standard is stored.

Subsequently, in step S1110, a table object is created using the table class files stored in the location.

In operation S1115, when there is a request from the application 405, the PID and TID of the table related to the request are transferred to the section filter 109.

In step S1120, the section having the PID and the TID filtered by the section filter 109 is received.

In operation S1125, the second XML file is parsed to receive a table name corresponding to the TID, and in operation S1130, a table object corresponding to the table name is obtained.

In step S1135, a table is generated by inserting data included in a section having the PID and the TID into the table object.

In operation S1140, a data of a form corresponding to the request of the application 405 and the currently set standard is generated using the table, and the data is transmitted to the application 405.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

101: Broadcaster 103: Tuner
105: demultiplexer 107: decoding unit
109: section filter 111: service information module
113: DSM-CC module
400: integrated middleware system 401: porting layer
403: JavaTV API405: Application
500: broadcast receiving device 501: service information manager
503: XML storage unit 505: parser
507: Table object generation unit 509: Service information request receiving unit
511: table generation unit 513: cache
601: File parser 603: DOM parser
605: parsing data storage
701: Table class file storage unit 703: Table object replication unit
801: section receiver 803: table name receiver
805: Table object receiving unit 807: Section data insertion unit
901: request messenger 903: request processing generation unit
905: Request processing unit 907: Table generation confirmation unit

Claims (14)

A broadcast receiving device for digital broadcast standard integrated processing,
A parser for parsing an XML file corresponding to a currently set standard among a plurality of standards;
A table object generation unit generating a table object corresponding to the currently set standard;
A service information request receiver configured to transmit a PID (Packet ID) and a TID (Table ID) of a table related to the request to a section filter when a request is received from an application;
A table generator for generating a table using the section having the PID and the TID filtered by the table object and the section filter; And
A service information manager requesting the parser and table object generation unit to parse a file corresponding to the currently set standard and to generate a table object
Including,
And the service information request receiving unit generates data using the table generated by the table generating unit and delivers the data to the application. The method of claim 1,
An XML file storage unit including a first XML file having location information storing table class files for the plurality of standards and a plurality of second XML files having at least one of table name, PID and TID information for each of the plurality of standards
Broadcast receiving apparatus further comprises a. The method of claim 2,
The parser parses the first XML file to extract location information storing a table class for the currently set standard,
And the table object generator generates a table object using table class files stored in the location. The method of claim 3,
The table object generation unit
A table class file storage unit for storing table class files for a plurality of standards; And
Receiving the extracted position information from the parser, a table object replication unit for generating a table object using a table class file stored in the location of the table class file storage unit
Broadcast receiving apparatus comprising a. The method of claim 2,
The parser parses a second XML file corresponding to the currently set standard to extract a table name corresponding to the TID associated with the request.
The table generation unit receives a table object corresponding to the table name from the table object generation unit, and generates the table by inserting data included in a section having the PID and the TID into the received table object. Broadcast receiving device. The method of claim 5,
The table generation unit
A section receiver configured to receive a section having the PID and the TID filtered by the section filter;
A table name receiving unit receiving a table name corresponding to the TID from the parser;
A table object receiver configured to receive a table object corresponding to the table name from the table object generator; And
A section data inserter for generating a table by inserting data included in a section having the PID and the TID into the table object.
Broadcast receiving apparatus comprising a. The method of claim 1,
And the table generator generates the table and stores the table in a cache. The method of claim 7, wherein
The service information request receiving unit
And generating data in a form corresponding to the request and the currently set standard by using the table stored in the cache and delivering the data to the application. The method of claim 7, wherein
The service information request receiving unit
A request messenger receiving a request of the application;
A request processing unit for transferring the PID and TID of tables related to the request to the section filter; And
And a table generation check unit for checking whether a table related to the request is stored in the cache.
The request processing unit, if it is determined that the table is stored in the cache, the broadcast receiving device, characterized in that for generating the data of the form corresponding to the request and the currently set standard using the table and forwarding to the application. 10. The method of claim 9,
The application is a broadcast receiving device, characterized in that for requesting the request messenger information on the broadcast currently being viewed using the SIManager Class of the JavaTV API. As a digital broadcasting standard integrated processing method
Parsing an XML file corresponding to a currently set standard among a plurality of standards;
Generating a table object corresponding to the currently set standard;
When a request is received from an application, transferring a PID (Packet ID) and a TID (Table ID) of a table related to the request to a section filter;
Generating a table using the table object and a section having the PID and the TID filtered by the section filter; And
Generating data using the generated table and transferring the data to the application
Digital broadcast standard integrated processing method comprising a. The method of claim 11,
Maintaining a first XML file having location information storing table class files for the plurality of standards and a plurality of second XML files having table name, PID and TID information for each of the plurality of standards;
Digital broadcast standard integrated processing method further comprising. The method of claim 12,
Parsing the XML file
Parsing the first XML file to extract location information storing a table class for the currently set standard;
The generating of the table object may include generating a table object using table class files stored at the location. The method of claim 12,
Generating the table,
Receiving a section having the PID and the TID from the section filter;
Receiving a table name corresponding to the TID extracted by parsing the second XML;
Receiving a table object corresponding to the table name; And
Generating a table by inserting data included in a section having the PID and the TID into the table object
Digital broadcast standard integrated processing method comprising a.

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