KR101221896B1 - Apparatus and Method for management of Data broadcasting application in Digital TV - Google Patents

Abstract

A broadcast application management method of a broadcast receiver having a data broadcast application operating function, the method comprising: extracting channel-specific data broadcast application information from a received digital broadcast data stream; Storing the extracted application information as a data broadcasting application table for each channel; And formatting a list of data broadcasting applications for each channel from the stored table based on a user interface input signal and outputting the screen information as one screen information. As described above, the present invention supports the integrated data channel management function in the data broadcasting receiver, so that the user can easily access various multimedia applications received through the broadcasting network on one screen and acquire necessary information.

Data Broadcast, Channel, MHP

Description

{Apparatus and Method for management of Data broadcasting application in Digital TV}

1 is a block diagram showing an internal configuration of a broadcast receiver having a data broadcast application operating function according to the present invention.

FIG. 2 is a table illustrating a Program Map Table (PMT) in a broadcast stream of an MPEG-2 format according to another embodiment of the present invention. FIG.

3 is an exemplary view showing a data broadcasting application operation screen according to another embodiment of the present invention.

4 is a flowchart illustrating a method of operating a data broadcast application of a broadcast receiver according to the present invention.

Description of the Related Art [0002]

10. Tuner / DEMUX 20. TS Decoder

30.Audio/Video Decoder 40.MHP Middleware

50.Application Manager 60.Memory

61. Application Information by Channel 62. Application Property Information

70.Application Display Organization 80.A / V Processor

90.Output Interface 100.Control

200. Data information extraction unit

The present invention relates to a broadcast receiver, and more particularly, to a broadcast receiver having a data broadcasting application operating function and a method of operating the same.

In general, digital broadcasting is multichannel / multimedia broadcasting, unlike conventional analog broadcasting, not only providing high-quality / high-quality service but also having versatility. Versatility is a new service that provides multimedia information through broadcast media. It refers to data broadcasting or interactive broadcasting. Data broadcasting is a broadcasting service in which a viewer uses information as a broadcasting receiver by transmitting multimedia data such as text, still images, graphics, documents, and software through a broadcasting medium, and is a service that best meets the current trend of convergence of broadcasting and communication. Digital broadcast standards exist in the US, such as ATSC (Advanced Television Systems Committee), European DVB (Digital Video Broadcasting), and Open Cable. Data broadcasting standards are largely divided into expression standards and transmission standards. Expression standards include ATSC's Digital TV Application Software Environment (DASE), DVB's Multimedia Home Platform (MHP), and ARIB's B-24. Basically, DASE and MHP use XML (eXtensible Markup Language) and Java standard, but ATVEF is based on HTML (Hyper Text Markup Language) only and ARIB is based only on XML. The transmission standard is different for each organization, but based on the data carousel method using DSM-CC (Digital Storage Media-Command and Control), it is prescribed by A / 90 (Data Broadcast Standard) in ATSC and DVB-Data in DVB. Already, data broadcasting technology development and standardization work is being progressed by broadcasting media such as terrestrial, satellite, and cable in the world, and in Korea, it recognized the importance and published technical standard based on international standard. Data broadcast standards are set for ATSC-DASE for terrestrial waves and DVB-MHP for satellites.

Conventional MHP-based data broadcasting is a JAVA-based data broadcasting that transmits a JAVA application (hereinafter, referred to as an application) that can be executed with an A / V signal to provide various text and graphic information to a broadcast receiver. Accordingly, the broadcast receiver displays a plurality of various applications received in the form of a list through an A / V signal and an overlay.

More specifically, since there are a plurality of broadcast service providers, the broadcast receiver manages and displays a list of applications corresponding to each service (hereinafter, referred to as a channel). That is, when a user switches a channel, only the application provided by the channel is processed and displayed when a user request is made.

Therefore, in the related art, there is no means of collectively managing the entire application by receiving and displaying each channel-specific application, and simply displaying the received application or processing and loading the application corresponding to the basic execution command.

The first problem of the prior art is the inconvenience that the user has to switch channels in order to obtain other information of the application because the application is managed for each channel. The second problem is that the information of the displayed application, for example, whether the automatic execution, whether it can be executed, whether the application is executed or the like does not show the user or only shows some information.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide various multimedia applications on one screen by supporting an integrated data channel management function in a data broadcasting receiver.

In order to achieve the above object, a broadcast receiver having a data broadcasting application operating function includes: a transport stream (TS) decoder for decoding a received broadcast signal and classifying the received broadcast signal into audio, video, and data streams;

A data information extraction unit for sequentially parsing data application information for each channel from the classified data streams and registering the data application information as one data broadcasting application list;

A memory configured to store the parsed data application information in a channel-specific data broadcasting application table;

A controller which determines a user interface input signal and executes the registered data broadcasting application list; And

And an output unit configured to display the decoded video data and the registered channel-specific data application list.

In addition, the present invention provides a method for managing a data broadcast application of a broadcast receiver, comprising: extracting data broadcast application information for each channel from a received digital broadcast data stream;

Storing the extracted application information as a data broadcasting application table for each channel;

And registering a channel-specific data broadcasting application list from the stored table based on the user interface input signal and outputting the screen information as one screen information.

The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a block diagram showing an internal configuration of a broadcast receiver having a data broadcast application operating function according to the present invention.

In the broadcast receiver, the RF tuner / Demux 10 receives a broadcast signal having a frequency band corresponding to a set value and converts a QAM signal, which is a VSB or a digital cable signal, into a TS. The transport stream (TS) decoder 20 receives the TS, demultiplexes the TS, and divides the TS into audio, video, and data streams, and outputs them. The audio / video decoder 30 decodes the separated MPEG audio / video data.

The data information extractor 200 sequentially parsing data application information for each channel from the classified data stream includes an MHP middleware 40, an application manager 50, an application display configuration unit 70, and a memory 60. .

The MHP middleware 40 performs a series of processes for extracting Java-based application information from the separated digital broadcast data stream. The MHP middleware 40 executes embedded applets using HTML / Java based APIs (Application Programming Interfaces) and detects data application information. At this time, the compiled Java MHP Xlet in the form of a class including byte code accesses data application information using Java byte code as an instruction set. In addition, the HP middleware 40 loads the initialization class of the data stream application according to the control signal and manages the class period. In addition, when the memory 60 is not needed, the allocated memory 60 is released. The broadcast receiver supports forward compatibility for MHP application information.

The application manager 50 sequentially parses data application information for each channel of the data stream extracted from the MHP middleware 40. The parsed data broadcasting application attribute information for each channel is stored as a data application table for each channel of the memory.

The application display configuration unit 70 registers application information for each channel stored and managed by the application manager 50 as one channel-specific data broadcasting application list.

The memory 60 stores data application information for each channel parsed by the application manager 50 as a data broadcast application table. It also stores application software data for the system OS and MHP middleware.

The A / V processor 80 overlays and outputs the channel-specific data broadcasting application list and video data from the application manager 50.

The output unit 90 includes a display device and an audio output unit which display the synthesized video data and the channel-specific data broadcasting application as one information screen. The control unit 100 controls the operation of the general broadcast receiver, determines the user data broadcast request signal according to the present invention, and executes data broadcast application attribute information for each channel.

2 is a table illustrating a program map table (PMT) in a broadcast stream of an MPEG-2 format according to another embodiment of the present invention.

The broadcast receiver checks a program map table (PMT) in an MPEG-2 format broadcast stream received through a broadcast network. Each A / V stream information (PID, stream type <stream_type>, etc.) in the currently received transport stream may be obtained from the PMT table. It detects whether there is a DST (Data Service Table, DST) in the broadcast stream. If there is information related to the DST in the PMT, the broadcast receiver finds the DST and uses the information to determine the data.

As shown in the table, a check for the existence of DST in the PMT is performed if the stream_type (remark no. 1) is 0x95 according to the data broad casting specification. In addition, through elementary_PID (No. 3 of the note), information about data can be obtained by finding a section in which an actual DST exists. Application information of the data broadcast parses the application_id_description field in the DST. To distinguish the type of data application, the action_type field of the information in the DST is parsed.

The data information extractor detects an association_tag value from the data stream through a tap loop in the DST table. Signaling information on the data application serviced on the channel currently being received is obtained through the DST table. In order to acquire a packet identifier (PID) of a transport stream (TS) to which the DST table is transmitted, the data information extracting unit corresponds to a stream _type corresponding to '0x95' in Service_location_descriptor () of a VCT (Virtual Channel Table) table. Get the value of elementary_PID. In addition, the channel number of the VCT table is extracted and the actual channel number (Major-Minor) of the currently selected digital channel number is stored. A packet having a table_id value of '0xCF' is collected with a corresponding PID to configure a data broadcasting application table for each channel. The data application information is updated and stored at any time during data broadcasting without rebooting the system.

3 is an exemplary view showing a data broadcasting application operation screen according to an embodiment of the present invention.

The data stream separated from the transport stream TS, which is a broadcast signal, extracts channel-specific data broadcast information from the application manager 50 and stores channel-specific application information 61. The data broadcasting application includes attribute information 62 such as a corresponding channel, an application type, a control code, an application name, and an initial class to be called. The application display configuration unit 70 registers application information for each channel stored and managed by the application manager 50 as one data broadcasting application list for each channel.

3A is a display unit for receiving an application list for each channel from the application manager 50 and overlaying the decoded video signal using an OSD (On Screen Display) method to output the same.

3 (b) shows an example of displaying the attribute information and the execution code (Auto, Started, Exe) of the application when the application 2-3 for data broadcasting of channel 2 is selected.

3 (c) displays corresponding application lists of channels 1, 2, and 3 sequentially. Application information for data broadcasting of each channel is updated and displayed in real time.

FIG. 3D is a control menu for executing data broadcasting application information and provides various functions based on a user interface signal.

4 is a flowchart illustrating a method of operating a data broadcast application of a broadcast receiver according to the present invention.

The broadcast receiver receives a broadcast signal having a frequency band corresponding to the set value (S400). The transport stream (TS) decoder demultiplexes an input VSB or QAM signal, which is a digital cable signal, into a transport stream (TS). At this time, audio, video, and data streams are separated for each stream. The data information extracting unit extracts data stream information according to a broadcast format (S401). The application manager sequentially parses channel-specific data application information from the classified data streams (S402). The parsed data broadcasting application attribute information for each channel is stored as a data application table for each channel (S403). The data broadcast call signal is detected through the user interface (S404). The application display configuration unit registers application information for each channel stored and managed by the application manager as one channel-specific data broadcast application list. The A / V processor overlays the channel-specific data broadcasting application list and the video data and outputs the video data to the screen display unit (S405).

The present invention is not limited to the above-described embodiments and various changes and modifications may be made by those skilled in the art.

 As described above, the present invention supports the integrated data channel management function in the data broadcasting receiver, so that the user can easily access various multimedia applications received through the broadcasting network on one screen and acquire necessary information.

Claims (13)

Extracting channel-specific data broadcasting application information from the received digital broadcasting data stream, Extracting the data broadcasting application information for each channel, Extracting a program map table, wherein the program map table includes a stream type field indicating presence or absence of a data service table; Detecting a data service table using the stream type field; and Extracting the data broadcasting application information for each channel by using the signaling information included in the extracted data service table; Storing the extracted data broadcast application information for each channel as a data broadcast application table for each channel; And And registering a channel-specific data broadcasting application list from the stored channel-specific data broadcasting application table and outputting the screen information as one screen information based on a user interface input signal. The method of claim 1, The data broadcast application information is a data broadcast application management method comprising the MHP (Multimedia Home Platform) based Java (JAVA) application programming interface. The method of claim 1, The data broadcasting application table includes a channel, an application type, a control code, an application name, and an initial class to be called. The method of claim 1, And the one screen information includes first screen information for displaying information for selecting and executing the data broadcast application information. The method of claim 1, The one screen information includes a second screen information for displaying information on at least two data broadcasting applications for each channel. The method of claim 1, And the data broadcasting application list for each channel is overlaid with the decoded video data and output. The method of claim 1, And the data broadcast application information is periodically updated and stored. A transport stream (TS) decoder which decodes the received broadcast signal and classifies it into audio, video, and data streams; A data information extraction unit for sequentially parsing channel-specific data application information from the classified data streams, wherein the data information extraction unit Extracting a program map table, the program map table including a stream type field indicating whether a data service table exists; Detecting a data service table using the stream type field, and sequentially parsing data broadcasting application information for each channel from the classified data stream using signaling information included in the extracted data service table; A memory for storing the parsed channel-specific data application information in a channel-specific data broadcasting application table; A controller configured to determine a user interface input signal, register a channel-specific data broadcast application list from the stored channel-specific data broadcast application table, and execute the registered channel-specific data broadcast application list; And an output unit for synthesizing the decoded video data and the executed channel-specific data application list and displaying the synthesized video application list. 9. The method of claim 8, The data information extraction unit Access Java-based application information from digital broadcast data streams ”MHP middleware; An application manager for parsing the accessed application information and storing the accessed application information in a channel-specific data application table; And And a data display application operating function for registering the stored application information as one data broadcasting application list for each channel. 10. The method of claim 9, And a memory for storing the data application table for each channel. 9. The method of claim 8, And a data broadcast application operation function comprising supporting forward compatibility of the application information. 9. The method of claim 8, And the output unit is a screen display unit for synthesizing and displaying the decoded video data and the executed channel-specific data application list. 9. The method of claim 8, And the output unit is a voice output unit for outputting decoded audio data.

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