KR100586366B1 - Apparatus and method for accessing TV content data using a virtual domain system, and recording media and transmission signals including the same - Google Patents

Abstract

The present invention relates to a processing apparatus and an access device for TV content data using a virtual domain system, a method thereof, and a recording medium and a transmission signal including the same. In particular, a virtual domain system is constructed in a TV content service. The present invention aims to provide a channel domain system (CDS) for efficiently processing and serving a large number of data broadcasting contents to a user, and to integrate an existing electronic program guide (EPG) into such a channel domain system.

As described above, the present invention includes a demultiplex processing unit 10 for demultiplexing a plurality of desired programs among video and audio data included in an input transport stream; An MPEG decoder 20 for decoding the received MPEG transport stream into audio, video and data; The audio processor 31 receives the decoded audio data and transmits the pre-amplified signal to the audio output unit, a video processor 32 for processing the decoded video data, and a data processor for processing additional data in addition to audio and video. A broadcast data processing unit 30 including 33; CDS data processing unit 51 for processing according to the data structure of the channel domain system (CDS) received from the data processing unit 33, and the existing EPG information into a data structure suitable for the channel domain system (CDS) An EPG data processing unit 52 to convert the CDS integrated management unit 50 to manage them; The CDS output implementation unit 60 is configured to classify the program object information received from the CDS integrated management unit 50 according to a condition, and to configure on-screen display information for outputting the program object information to a display unit assigned to each channel. ; An image output unit 70 for reconstructing the screen configuration information transmitted from the video processing unit 32 and the data processing unit 33 and the screen configuration information transmitted from the CDS output implementation unit 60 and outputting the screen configuration information; A memory (80) connected to the CDS integrated management unit (50) to store received channel domain data and to store additional information generated by using the same; And an input interface 90 controlled by the user.

Channel domains, program guides, integrations.

Description

Method and apparatus for accessing TV contents data utilizing virtual domain system and the media and transferring signal containing the method}                              

1 to 3 are screen diagrams showing a process of accessing content of a conventional data broadcast;

4 is a block diagram illustrating an embodiment of an apparatus for accessing TV content data using a virtual domain system of the present invention;

5 is a flowchart illustrating an embodiment of a method of accessing TV content data using a virtual domain system of the present invention;

6 is a flowchart illustrating a method of processing channel domain system data of the present invention;

7 is a flowchart showing a method of processing EPG data of the present invention;

8 and 9 are hierarchical diagrams illustrating a data structure of a channel domain system.

10 and 11 are hierarchical diagrams showing the structure of an electronic program guide system;

12 is a view showing an example of a method of accessing a domain of a user using the apparatus and method of the present invention;

13 is a block diagram showing an example of channel domain system data;

14 is a configuration diagram showing a state in which a channel domain system and an electronic program guide are integrated.

<Explanation of symbols for the main parts of the drawings>

10: demultiplex processing unit 20: MPEG decoder

30: broadcasting data processing unit 40: audio output unit

50: CDS integrated management unit 60: CDS output implementation

70: video output unit 80: memory

90 input interface

The present invention relates to a TV (TV) content data processing device and access device using a virtual domain system and a method thereof, and a recording medium and a transmission signal containing the same, in particular, to build a virtual domain system in TV content services By providing a channel domain system (CDS) to efficiently process and service numerous data broadcasting contents to users, and integrating the existing electronic program guide (EPG) into such a channel domain system, the user can use it more effectively. Apparatus and method for processing and accessing TV content data using a virtual domain system that provides access to channels and provided broadcast contents in a convenient and convenient manner, and methods thereof, and recording media and transmission signals including the same. It is about.

Recently, as digital TV broadcasting is in full swing, interest in data broadcasting services using data is increasing. Digital broadcasting has enabled various services, including interactive services, which have not been possible by transmitting data in addition to the existing audio and video.

All broadcasts such as terrestrial, satellite, and cable will be digitized in a short period of time, and according to such changes, all environments will change around the media such as TV, not only broadcasters but also content providers, advertisers and consumers.

Thanks to the technological advances in data broadcasting, broadcasting will provide more information and new fun, and the demands of viewers on these services will be more diversified.

Such data broadcasting may use an interface called an electronic program guide (EPG) used in a conventional TV system. It is an interactive on-screen display function that displays information similar to a list of TV programs, including the information needed to query and decode the program.

Meanwhile, an interface similar to the Internet is used for searching for corresponding content in a recently developed data broadcasting system. In other words, there is a portal for data broadcasting, and the corresponding category is sequentially searched to find and view desired content from the portal.

As described above, in the case of Internet content used on the basis of a PC, even if the category has many subcategories in each category or the depth of the subcategories below the top primary category is deeper than the third depth, From the step to the final step, the category selection menu is spread out on one screen, or it can be easily used if the user clicks the mouse using the scroll bar to make an inquiry.

However, TV systems generally use only a simple input method such as a remote control, so in order to select a desired menu, a user must press a button several times. It is very difficult to display many levels of menus or many contents on one screen because it is inevitable.

Of course, it is more difficult to use scrollbars because it is difficult to jump the cursor or selection point on the screen from other selection menus or icons on the screen. Therefore, in the TV content service, while using content in a lower level category of a specific category, in order to use content in another category, the user must repeatedly move to the upper menu and lower menu several times, and to use the content of the upper and lower categories There is an inconvenience in seeing the selection menu unnecessarily many times.

For example, when a viewer watches an existing broadcast of a channel in a TV system and wants to use one content of the TV content service, for example, catching up with a star, the TV content service is once used in a conventional TV system environment. Press a channel, for example 100, that is a TV content service portal to navigate to the portal.

Then, as shown in Fig. 1, a list or menu of the top content categories in the portal appears on the screen, and the viewer operates the remote control direction button several times to place the cursor or pointer on the 'female' category and press the confirm button.

Then, as shown in FIG. 2, as shown in FIG. 2, a detailed category list or menu of the 'female' category is displayed, and the viewer moves to the 'skin beauty' category through several operation of the direction buttons and selection of the confirmation button.

In the 'skin care' category, the viewer must press the direction button and the confirmation button a few times to input the content, which is originally shown in FIG.

After that, if the viewer wants to go to the 'View Latest Movie' menu while watching the contents, the viewer goes back to the upper category in the reverse order and returns to the main screen of channel 100 (Fig. 1), which is the TV content portal. You will need to repeat these remote control operations in the order of 'movie', 'latest movie'. Or there is a problem that must be restarted from the channel 100, the TV content portal.

In addition, when one TV content is placed on a general channel of an existing TV, the above problem is still present when the TV content has different transmission capacities for each content and has a subcategory.

On the other hand, to overcome the above problems, by specifying each content as a virtual channel value, so that the virtual channel value to each channel domain value to provide a new system to facilitate the search and access of the content as The apparatus and method for processing TV content data filed by the present applicant have been proposed in Korean Patent Application No. 2003-78155. However, the apparatus and method for processing TV content data as described above are configured separately from the electronic program guide (EPG), and the necessity of more concretely inventing the electronic program guide is required.

The present invention is to solve the above-mentioned shortcomings, the integrated operation of the data content search and access system and the electronic program guide is possible, the detailed access to the data including the channel and the program, it is flexible when a number of channels of services are made An apparatus and method for processing TV (data) content data that can be moved over a channel and a domain, and a method thereof, and a recording medium and a transmission signal containing the same are provided.

The present invention includes a demultiplex processor for demultiplexing a plurality of desired programs among video and audio data included in an input transport stream; An MPEG decoder for decoding the received MPEG transport stream into audio, video and data; An audio processor which receives the decoded audio data and passes the preamplified signal to an audio output unit, a video processor that processes the decoded video data, and a data processor that processes additional data in addition to audio and video. A broadcast data processing unit; CDS data processing unit for processing according to the data structure of the channel domain system (CDS) received from the data processing unit, EPG data processing unit for converting the existing EPG information into a data structure suitable for the channel domain system (CDS) Consists of a CDS integrated management unit for managing them; A CDS output implementation unit for classifying program object information received from the CDS integrated management unit according to a condition and configuring on-screen display information for outputting the program object information to a display unit assigned to each channel; An image output unit configured to reconstruct and output the screen configuration information transmitted from the video processor and the data processor and the screen configuration information transmitted from the CDS output implementation unit to the screen; A memory connected to the CDS integrated management unit to store received channel domain data and to store additional information generated by using the channel domain data; This is accomplished by including an input interface controlled by the user.

A method of using the apparatus, the method comprising: a first step of receiving a broadcast stream at a receiving terminal apparatus; A second step of processing a stream for audio and video in an audio processor and a video processor; A third step of processing, by the data processor, system information and additional information used for broadcasting other than audio and video; A fourth step of transmitting CDS information and EPG information used in the channel domain system (CDS) and the electronic program guide (EPG) among the additional information to the CDS integrated management unit; When the additional information transmitted to the CDS integrated management unit is CDS data, the CDS data is transferred to the CDS data processing unit to classify and process the data according to the form of a data structure forming a channel domain system (SDS) (S5). Wow; If the additional information transmitted to the CDS integrated management unit is EPG data, the EPG data is transferred to the EPG data processing unit, and the received EPG data is processed according to whether the channel information or program information, and the channel domain system ( A sixth step of converting the data into CDS); A seventh step of delivering, by the CDS integrated management unit, the processed CDS and EPG data to a CDS output implementation; And an eighth step of outputting the audio, video, and additional data, and image information output from the CDS output implementation section, from the image output section.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

4 is a block diagram illustrating an embodiment of an apparatus for accessing TV content data using a virtual domain system of the present invention. The configuration of an embodiment of the present invention is as follows.

The present invention provides broadcast data in a user receiving terminal device, for example, a terminal device used in a set-top box, a VOD, an AOD, an Internet service, a digital home service, a multimedia PC, or a general PC. Receiving the received data and displaying the received data so that the user can easily use the received data, and receive and demodulate the RF signal transmitted from the transmission station of the broadcasting station into digital signals, and then include the video and audio data contained in the input transport stream. Among them, a demultiplex processing unit 10 and an MPEG decoder 20 for demultiplexing a plurality of desired programs are included.

Subsequently, the received broadcast data is processed by the broadcast data processing unit 30 including the audio processing unit 31, the video processing unit 32, the data processing unit 33, and the like. Processing of additional data takes place.

That is, the broadcast data is demultiplexed by the processing unit 10 for processing each service multiplexed according to the channel, and an MPEG decoder for decoding (parsing) the received MPEG transport stream into audio, video and data ( 20) is processed primarily.

The audio data decoded by the MPEG decoder 20 is transferred to the audio processing unit 31, and is then transmitted to the audio output unit 40 of the set-top box through preamplification and used through the corresponding audio output interface. The decoded video data Is transmitted to the image output unit 70 via the video processor 32.

In addition, the data processing unit 33 processes additional data in addition to audio and video. The additional data includes a virtual channel system (hereinafter, referred to as a channel domain system (CDS)) that designates and processes each content as a virtual channel value. CDS information including information on the system, system information and event information of data broadcasting such as SI (System Information) data and EI (Event Information) constituting an electronic program guide (EPG) used in existing data broadcasting. Is included.

Designating each content as a virtual channel value as described above is referred to as a 'channel domain', and the virtual channel value becomes a channel domain value of each channel domain system (CDS). By constructing such a channel domain system, a new system for searching and accessing contents is provided, which is disclosed in Patent Application No. 2003-78155 by the present applicant.

The CDS and EPG related information is delivered to the CDS integrated management unit 50, which is composed of the CDS data processing unit 51 and the EPG data processing unit 52, and manages them in detail. The channel domain system (CDS) data received from the data processor 33 is processed by the CDS data processor 51, and the EPG data transferred from the data processor 33 is processed by the EPG data processor 52.

The CDS data processing unit 51 and the EPG data processing unit 52 respectively process CDS data and EPG data by dividing the depth according to a hierarchical structure.

That is, the CDS data among the information received by the data processor 33 is transferred to the CDS data processor 51 to form a CDS data structure including a root (portal) node, a sub portal node, a terminal node, and the like.

In addition, EPG-related data of the information passed through the data processing unit 33 is passed to the EPG data processing unit 52 to analyze the EPG structure, and the analyzed data goes through a step for converting the EPG data into CDS data. That is, the information constituting the channel and the information constituting the program are converted into the root, subportal domain, and terminal node of the CDS appropriate for the channel domain system (CDS).

Thereafter, the received EPG data is converted into CDS data form is transferred from the CDS integrated management unit 50 to the CDS output implementation unit 60. If necessary, the data of the memory unit 80 is read to generate display information of the electronic program information, and new data is updated in the memory unit 80.

The memory unit 80 stores data generated when utilizing additional functions provided, such as domain reservations, bookmarks, favorite channels, program usage information, and the like.

The CDS output implementing unit 60 lists the CDS data received from the CDS integrated management unit 50 in order according to the control conditions input from the input interface 90 including the user's input device, and outputs information to be displayed. Configure On Screen Display information to

In addition, the CDS output implementation unit 60 displays a predetermined number of objects in the display unit according to the length of the objects when the objects are displayed, thereby displaying the number of objects displayed according to the length of each object. Can be adjusted, and thus, the display replaces the concept of a grid displayed by the time axis used in the conventional EPG, regardless of the size or length of the program object display area.

The screen configuration information transmitted from the video processing unit 32 and the data processing unit 33 and the information transmitted from the CDS output implementation unit 60 are transferred to the image output unit 70.

On the other hand, by connecting to the data processing unit 33, by additionally configuring a data receiving unit (not shown) that can receive channel domain (CDS) data, electronic program guide (EPG) data or other additional data through the Internet, Preferably, the CDS data, EPG data or other additional data can be received via the Internet without broadcasting.

5 is a flowchart illustrating an embodiment of a method of accessing TV content data using a virtual domain system of the present invention, and illustrates a method of using the apparatus.

That is, the method using the access device, the first step (S1) of receiving a broadcast stream in the receiving terminal device; A second step (S2) of processing a stream for audio and video in the audio processor and the video processor; A third step S3 of processing the system information and additional information used for broadcasting in addition to audio and video by the data processor; A fourth step (S4) of transmitting CDS data and EPG data used in the channel domain system (CDS) and the electronic program guide (EPG) among the additional information to the CDS integrated management unit; When the additional information transmitted to the CDS integrated management unit is CDS data, the CDS data is transferred to the CDS data processing unit to classify and process the data according to the form of a data structure forming a channel domain system (SDS) (S5). Wow; If the additional information transmitted to the CDS integrated management unit is EPG data, the EPG data is transferred to the EPG data processing unit, and the received EPG data is processed according to whether the channel information or program information, and the channel domain system ( A sixth step S6 for converting the data into CDS); A seventh step (S7) of delivering the processed CDS and EPG data from the CDS integrated management unit to the CDS output implementation; The technical features include the eighth step (S8) of outputting the audio, video, and additional data and the image information output from the CDS output implementation section.

On the other hand, between the first step and the second step, the first step to receive the CDS data, EPG data, or other additional data via the Internet is further configured to add the CDS data, EPG data, or other addition Allows data to be received in ways other than broadcast.

FIG. 6 is a flowchart illustrating a method of processing channel domain system data of the present invention, and the processing of channel domain data in the CDS data processor is performed in the following process.

In other words, by analyzing the CDS stream, which is broadcast data having the broadcasted CDS structure information, the type of the structure (node) constituting the channel domain is determined. When the structure is a root (portal node) type, the connection information of the substructure is processed. A fifth step (S5-1) of storing in the memory as the highest root domain; When the structure of the channel domain is determined and the structure is in the sub form, step 5-2 of processing connection information of the upper and lower structures, and storing data in the form of the sub portal in the memory (S5-2) )Wow; Determining a type of the structure constituting the channel domain, when the structure is a terminal type, processing step 5-3 of processing connection information of a higher structure and storing data of the terminal type in a memory (S5-3); It includes a fifth step (S5-4) for verifying the integrity of the data stored in the memory.

As described above, when the CDS data processing unit processes the channel domain data, classification processing is performed according to the type of the structure (node), and the node type is in the form of a root, a subportal, and a terminal. In other words, the root refers to the highest root domain, which means that the channel domain data designates the highest root (portal), the terminal is usually the lowest level having the content, and the subportal means the steps in between.

Processing the connection information of the higher structure connected to the terminal node of the fifth step (S5-3), in detail, the object ID storage step of storing the channel domain object ID in the memory; A depth storing step of storing channel domain depth information in a memory; A flat ID storing step of storing information indicating a domain order of the same depth in a memory; An upper ID storing step of storing an ID value of an upper connected structure in a memory; It is configured in detail with a data storage step of storing its structure object content data in a memory.

In addition, the processing of the connection information of the upper and lower structures connected to the sub-node of the fifth step (S5-2), the object ID storage step of storing the channel domain object ID in the memory; A depth storing step of storing channel domain depth information in a memory; A flat ID storing step of storing information indicating a domain order of the same depth in a memory; An upper ID storing step of storing an ID value of an upper connection object in a memory; A sub ID storing step of storing an ID value of the sub connection object in a memory; It is configured in detail with a data storage step of storing its structure object content data in a memory.

As described above, the objects are constructed and then the integrity of each object is checked. This is a process for checking the identity between the actual stream to be broadcast and the original source received and processed by the receiving terminal device.

7 is a flowchart illustrating a method of processing EPG data according to the present invention. The processing of the EPG data in the EPG data processing unit is specifically performed as follows.

That is, the processing of the EPG data by the EPG data processing unit and converting the EPG data into the form of the channel domain system (CDS) data includes: a 6-1 step (S6-1) of receiving and analyzing the EPG data; If the EPG data is the channel information as a result of the analysis, step 6-2 (S6-2) of processing connection information of upper and lower structures and storing them in a memory; A step 6-3 (S6-3) of determining whether the EPG data is program information with additional data when the analysis result is program information; If the EPG data is program information, step 6-4 (S6-4) of processing connection information of upper and lower structures and storing in the sub portal structure memory; If the EPG data is not program information, step 6-5 (S6-5) of processing connection information of a higher structure and storing it in a terminal structure memory; And a sixth to sixth steps (S6-6) of verifying the integrity of the information stored in the memory.

In other words, in the processing of EPG data, broadcast programming information of data broadcasting does not have the concept of a structure (node), but since the structure itself is the same, a concept of a node (object) is created and applied to it in order to be included in the CDS.

In order to maintain the compatibility of the existing EPG in the CDS, an analysis process for the received EPG data is required, which analyzes the EPG information received from the EPG data processing unit as soon as it is received and based on the analyzed data. Switch to CDS object information.

That is, the root domain object analyzes the EPG data, performs all CDS conversions of the subdomains, and then makes the data based on the data, which is processed in the reverse order with the CDS.

That is, the information related to the channel among the EPG information is converted into a subportal domain object by giving ID, Depth and LinfInfo, and the channel information such as the channel name is stored in the memory as the domain object as the content information.

In the information of the EPG, which is program information, and in the case of a subportal format in which lower additional information is provided in an interlocked manner, an ID, Depth, and LinkInfo structure are first given, and content information of the additional information to be linked is stored in a memory.

In the information of the EPG, the lower additional information containing only the program information is 프로그램 when the program is used. In the case of the terminal node object, the ID, Depth, and LinkInfo structure are assigned to the terminal node object type, and the content information of the program is assigned to the terminal node object. Mortgage in memory

Thereafter, the objects are configured and then the integrity of each object is checked. This is a process for confirming the identity of the original stream after being received and processed by the receiving terminal device as described above. .

8 and 9 are hierarchical diagrams showing the data structure of the channel domain system, and FIGS. 10 and 11 are hierarchical diagrams showing the structure of the electronic program guide system, and these diagrams show the channel domain system (CDS) and the electronic program guide ( EPG) can be integrated with each other.

12 is a diagram showing an example of a method of accessing a domain of a user using the apparatus and method of the present invention, FIG. 13 is a diagram showing an example of channel domain system data, and FIG. 14 is a channel domain system and an electronic program. It is a block diagram which shows the state in which a guide was integrated.

Hereinafter, the operation and effects of the present invention will be described with reference to FIGS. 4 to 14.

FIG. 8 illustrates an example of a channel configuration of a CDS having a hierarchical two-dimensional structure. The channel configuration of the CDS is a tree structure having a portal as a root, and all channels are configured as leaf nodes. . Each node has the following properties:

1. Portal Domain-A portal node provides an entry point for the entire content and is the only root of the CDS in the CDS.

Such a root domain can directly access a portal node from another type of node by transmitting an external key input or a specific signal, and the portal node can be a different sub portal or channel node. It may include.

2. Sub Portal Domain-Provides a starting point for a specific Contents Category and may include other Sub Portal Domains or Terminal Domains.

3. Terminal Domain-A node having information about a service to which content is directly provided, which is a leaf node that cannot contain any other kind of node.

FIG. 9 is another representation of FIG. 8, meaning that the meaning is the same and that it is the same as the structure of the EPG.

In other words, although CDS can be used in general broadcasting that can port EPG, it shows additional information such as data portal channel where data broadcasting is mainly used.

Data constituting the CDS is composed of a terminal domain object constituting a subportal and a top portal direct channel and content data below the portal domain that is the top of the CDS data.

The domain object constituting the sub portal has information on the upper portal and is composed of a terminal domain object constituting channel and content data of the lower sub portal or the corresponding sub portal (own domain).

The terminal (last terminal) domain object, which becomes the channel and content data, has link information for the parent domain object, and actual information (text, image, other binary files) about the channel and content.

By using the connection information of each domain, the CDS system can be extended and used indefinitely.

On the other hand, in order to produce a data stream constituting the organization information in the actual broadcast consists of a program association table (PAT), a program map table (PMT), an event information table (EIT), a service description table (SDT) and other data These data constitute channel information, program information, and other additional information. 10 is a configuration diagram for conceptually explaining this.

The EPG data (combination information) includes channels to be broadcast and program information of subordinate programs. Programs broadcast in the channel are configured in a schedule within a predetermined time. Internally scheduled programs are listed in chronological order.

Objects included in the program are composed of various kinds of additional information and contents (text information, image information, file information, etc.). The contents are composed of linked additional digital contents such as viewing information, advertisement information, and PPL information of the program, and the additional information constituting the respective contents may form lower additional information according to the characteristics of the contents of the corresponding information.

EPG data consisting of channels and time axes can be converted into a depth (level) concept having a tree shape, and transformed into a structure having data having a connection between upper and lower objects.

This structure is the same as the data structure of the CDS. By using this property, EPG data can be converted into CDS data to construct a domain system.

FIG. 11 is a diagram illustrating a part of a process for converting five programs for one channel (No. 100), which are information of the EPG scheduled and broadcast as described above, into CDS.

In order to convert EPG data to CDS, it is necessary to analyze the EPG data and reconstruct it into CDS data. In this way, in order to create a connection structure of the CDS, the subdomain domain in the terminal domain and the portal domain in the subportal domain must be processed in the reverse order, and the process is as follows.

1. Configure domains of additional information of Level 4.

2. Configure domains of Level 3 additional information. The connection information of subordinate objects is stored using the information of level 4 domain objects. The information on the connection of the upper domain among the level 4 domain information is stored as the level 3 additional information.

3. The information of Level 2 (program information) composes a domain object using the EPG data and stores each data using the received other table information.

4. Level 1 (channel information) configures and stores channel information with information of domains of program information of Level 2.

5. Level 0 (root domain) configures and stores a virtual root domain composed of domains of channel information.

An example of an access method of a user domain configured as described above is as follows.

That is, the domain may be displayed by a label made of letters or numbers according to the unique level (depth), and the characters may be displayed between the levels by letters or symbols as shown in [001.123.456].

Nodes of the same level having the same parent node are based on the same size of the label displaying the node. Of course, nodes of the same level having different parent nodes may be inconsistent with the size of the label.

E.g. 001.123.456, 001.124.1, 001.999.8765

Each label may or may not display a place value for zero to indicate the place number when displayed in decimal.

Ex) 001.123.456 = 1.123.456

13 shows an example of a CDS data structure, which structure is composed of the following elements.

1. Node_ID: A unique ID (ID) assigned to a node, which is each entity constituting the CDS. Even if the internal ID changes, the user has a label so that user independence can be maintained.

2. Node Type: This field indicates the type of domain, and the type of domain may include a root portal domain, a sub portal domain, and a terminal domain.

3. Service Type: As a field indicating a transmission method, there may be a broadcasting method transmitted one-to-many (1: many), or an on-demand method transmitted one-to-one (1: 1).

4. Node Vision: This field is used to express whether the transmitted node is the node used as the main object of the interface or represents supplementary data and link information of the main object.

5. Node Level: represents the depth of the domain. The root portal domain has a value of 0, the sub portal domain and the terminal domain of the lower one are 1, and the lower portal domain is 2, 1, and so on.

6. Node Flat ID: This field contains information identifying domains of the same depth level. By using this field, you can quickly find node information within the same level.

7. Node Flat Priority: Allows for faster processing by assigning each priority within the same depth.

8. Version Value: This field indicates the version information of the domain. The receiving terminal receives this new domain information when it is determined that it is the new version by comparing this value with the newly received value.

9. Link Info: This structure represents link information of a domain, and includes information indicating upper link and lower linked domains. It connects the linking domains by node ID (unique value) and shows how to link the domains by link type (type).

For example, if the link type is 1 when the sub-connection is used, the sub domain becomes a domain object representing internal information and link information of the parent domain and is not an actual main domain.

10. MetaData Type: A field that indicates what format the content of the node object represents. When 1, a value indicating an existing EPG and broadcasting system is displayed. When 0, a value indicating transmission of CDS information is indicated.

11. Label Size: This is the maximum number of label digits that domains of the same depth can have.

12. Label: A field indicating a label value of a domain. The value indicates a user's input or a value displayed on a screen.

13. Title: This field indicates the title of the domain.

14. Description: This field describes this domain.

15. Keyword: This field is used to search the domain.

16. Category: This field is used to indicate the type of domain. It is also used for searching.

17. Time Value: A value indicating the time of transmission.

18. URI: This field indicates a URL and is used as on-demand URL information.

19. Parameter: Used with URI field.

20. Certification: Represents certification information for a domain.

(The following shows when MetaData is an existing data broadcasting system such as EPG.)

21. TableID: When MetaData Type is 1, it displays Table_ID, which is Table information of EPG and broadcasting system. NIT = 0x40, SDT = 0x42, EIT = 0x4E

22. FIELD_VALUE: A generic term for fields indicating values of existing broadcast information.

23. Descriptor_tag: This is a field indicating the type of descriptor among existing broadcast information.

24. Descriptor (): Structure indicating descriptor () information among existing broadcasting information.

The metadata is actual information that each node has. LinkInfo of Metadata is the structural information about the connection between upper and lower nodes and is a key element representing link information of CDS.

By the above process, as shown in FIG. 14, the electronic program guide (EPG) data may be integrated into the channel domain system (CDS).

The above embodiment is an example for explaining the technical idea of the present invention in detail, and the scope of the present invention is not limited to the above drawings and embodiments.

The present invention as described above has the following effects.

First of all, integrated operation of data contents search and access system and electronic program guide is possible, detailed access to data including channels and programs is possible, and flexible channel and domain movement is possible when numerous channels are provided.

In addition, it is possible to visually manage the linked data. That is, since the schedule information for the linked data can be transmitted to the user, more detailed user requirements can be satisfied and the effect of the user's access to the event can be increased.

Claims (14)

A demultiplex processor for demultiplexing a plurality of desired programs among video and audio data included in an input transport stream; An MPEG decoder for decoding the received MPEG transport stream into audio, video and data; An audio processor which receives the decoded audio data and passes the preamplified signal to an audio output unit, a video processor that processes the decoded video data, and a data processor that processes additional data in addition to audio and video. A broadcast data processor; CDS data processing unit for processing according to the data structure of the channel domain system (CDS) received from the data processing unit, EPG data processing unit for converting the existing EPG information into a data structure suitable for the channel domain system (CDS) Consists of a CDS integrated management unit for managing them; A CDS output implementation unit for classifying program object information received from the CDS integrated management unit according to a condition and configuring on-screen display information for outputting the program object information to a display unit assigned to each channel; An image output unit configured to reconstruct and output the screen configuration information transmitted from the video processor and the data processor and the screen configuration information transmitted from the CDS output implementation unit to the screen; A memory connected to the CDS integrated management unit to store received channel domain data and to store additional information generated by using the same; Apparatus for accessing TV content data utilizing a virtual domain system, characterized in that it comprises an input interface controlled by a user. The user data of claim 1, wherein the data processing unit receives the other data information including the channel domain data from the CDS data processing unit, and the user data generated when the user utilizes the channel domain data. Apparatus for accessing TV content data utilizing a virtual domain system, characterized in that the CDS feedback server to collect and receive the additional configuration. The data receiving unit of claim 1, further comprising a data receiving unit connected to the data processing unit to receive channel domain data, electronic program guide data, or other additional data through the Internet. And the channel domain data, the electronic program guide data, or other additional data can be received through the Internet without being broadcasted. In the method using the access device of claim 1, A first step of receiving a broadcast stream at a receiving terminal apparatus; A second step of processing a stream for audio and video in an audio processor and a video processor; A third step of processing, by the data processor, system information and additional information used for broadcasting other than audio and video; A fourth step of transmitting CDS information and EPG information used in the channel domain system (CDS) and the electronic program guide (EPG) among the additional information to the CDS integrated management unit; When the additional information transmitted to the CDS integrated management unit is CDS data, the CDS data is transferred to the CDS data processing unit to classify and process the data according to the form of a data structure forming a channel domain system (SDS) (S5). Wow; If the additional information transmitted to the CDS integrated management unit is EPG data, the EPG data is transferred to the EPG data processing unit, and the received EPG data is processed according to whether the channel information or program information, and the channel domain system ( A sixth step of converting the data into CDS); A seventh step of delivering, by the CDS integrated management unit, the processed CDS and EPG data to a CDS output implementation; And an eighth step of outputting the audio, video, and additional data and the image information output from the CDS output implementation unit from the image output unit. . 5. The virtual domain system according to claim 4, further comprising a step 1-1 further comprising receiving CDS data, EPG data, or other additional data through the Internet between the first and second steps. Approach to TV content data using The method of claim 4, wherein the processing of the CDS data by the CDS data processor of the fifth step comprises: When the structure is a root form by determining the type of the structure constituting the channel domain, it processes the connection information of the lower structure, analyzes the CDS stream which is the broadcast data having the broadcast CDS structure information, and stores it in the memory as the highest root domain. Step 5-1; Determining a type of the structure constituting the channel domain, and when the structure is in the sub form, processing the connection information of the upper and lower structures, and storing data in the form of the sub portal in the memory; Determining the type of the structure constituting the channel domain, if the structure is a terminal type, processing step 5-3 of processing connection information of a higher structure and storing data of the terminal type in a memory; And a fifth step of verifying integrity of the data stored in the memory. The method of claim 6, wherein the processing of the connection information of the higher level structure of steps 5-3 comprises: An object ID storing step of storing the channel domain object ID in a memory; A depth storing step of storing channel domain depth information in a memory; A flat ID storing step of storing information indicating a domain order of the same depth in a memory; An upper ID storing step of storing an ID value of an upper connected structure in a memory; A method of accessing TV content data using a virtual domain system, characterized in that the data storage step of storing the own structure object content data in memory. The method of claim 6, wherein the processing of the connection information of the upper and lower structures of the step 5-2, An object ID storing step of storing the channel domain object ID in a memory; A depth storing step of storing channel domain depth information in a memory; A flat ID storing step of storing information indicating a domain order of the same depth in a memory; An upper ID storing step of storing an ID value of an upper connection object in a memory; A sub ID storing step of storing an ID value of the sub connection object in a memory; A method of accessing TV content data using a virtual domain system, characterized in that the data storage step of storing the own structure object content data in memory. The method of claim 6, wherein the connection information of steps 5-2 and 5-3, A method of accessing TV content data using a virtual domain system, characterized in that each domain object has a unique value and a form of a higher or lower domain object. 5. The method of claim 4, wherein the processing of the EPG data by the EPG data processing unit of the sixth step and converting the EPG data into the form of channel domain system (CDS) data comprises: Step 6-1 of receiving and analyzing EPG data; If the EPG data is channel information as a result of the analysis, steps 6-2 of processing connection information of upper and lower structures and storing them in a memory; If the EPG data is program information as a result of the analysis, determining whether the program information includes additional data; If the EPG data is program information, steps 6-4 of processing connection information of upper and lower structures and storing them in a sub portal structure memory; If the EPG data is not program information, steps 6-5 of processing connection information of a higher structure and storing it in a terminal structure memory; And a sixth to sixth stages of verifying the integrity of the information stored in the memory. 5. The method of claim 4, wherein the processing of the EPG data by the EPG data processing unit of the sixth step and converting the EPG data into the form of channel domain system (CDS) data comprises: The EPG information converts the channel information into the subportal structure of the channel domain system, and the program information in the EPG information is converted into the terminal structure of the channel domain system, and the information forming the program among the EPG information converts additional data. Access method of the TV content data using the virtual domain system, characterized in that the conversion to a subportal structure of the channel domain system if included. The method of claim 4, wherein the EPG data processing unit of the sixth step processes the EPG data and converts the EPG data into channel domain system (CDS) data. A method of accessing TV content data using a virtual domain system, characterized in that the EPG data is converted in real time or EPG data is received in a state where all of the transmission is received. Claim 4 recording medium recording the access method of the TV content data using the virtual domain system. A transmission signal for transmitting an access method of the TV content data using the virtual domain system of claim 4.

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