KR100921023B1 - Method and Apparatus for Provision of Service Information by using Query and View in digital Data Broadcast Receiver - Google Patents

Abstract

The present invention relates to a method and apparatus for providing service information in a digital data broadcasting receiver, and more particularly, to service information using a query and view method in a data broadcast receiving apparatus such as a digital multimedia broadcasting (DMB) receiving terminal. It relates to a method and apparatus for providing SI). The method according to the present invention comprises the steps of: receiving a query for service information from an application program, searching a service information database for the query, generating a service information view, which is a collection of objects, and providing it to the application program; And the service information view can be changed together when the service information database is updated, can see that an object is changed in the view, and can be used to create a linked view for another query.

Digital broadcasting, SI, query, view

Description

Method and apparatus for providing service information using query and view method in digital data broadcasting receiver {Method and Apparatus for Provision of Service Information by using Query and View in digital Data Broadcast Receiver}

1 is a view showing an example of the configuration of the SI model in the conventional terrestrial DMB broadcasting,

2 is a block diagram of an apparatus for providing service information in a digital data broadcasting receiver for performing an SI reception model according to the principles of the present invention;

3 is a flowchart illustrating a service information providing method using a query and view method in a digital data broadcasting receiver according to an embodiment of the present invention.

The present invention relates to a method and apparatus for providing service information in a digital data broadcasting receiver, and more particularly, to service information using a query and view method in a data broadcast receiving apparatus such as a digital multimedia broadcasting (DMB) receiving terminal. It relates to a method and apparatus for providing SI).

Data broadcasts refer to broadcasts that transmit data files and executable program codes in addition to traditional broadcasts such as television and radio that broadcast video and audio in real time. The service information is generally a concept including organizational information of services and programs received from a data broadcasting network. Such service information is efficiently stored and processed in a low level data structure in a data broadcasting receiver.

In a digital data broadcasting system, service information (SI) is a mechanism for a receiver to know channel and service information available in a digital broadcasting network. In addition, the SI information shows the name of the service, the audio language, and information currently being broadcast so that the user can easily identify the information.

Accordingly, in a variety of service environments in which broadcasting and communication networks are combined, a method of sending service information about a program that is currently being broadcasted or to be broadcasted in the future, and enabling a user or an application program to efficiently and efficiently retrieve necessary information from various service information. Is essential.

A general example of an SI reception model that receives and utilizes SI information is as follows. The SI information is received through a broadcast or communication network and is converted into an efficient low level representation by the SI decoder and stored in the terminal. When an application program such as an EPG requests service information to display information to a user, the application program requests the SI decoder through an SI API (application program interface). The requested information is converted from the low-level representation that is efficient for the terminal to the high-level object type defined by the SI API and transmitted to the application program such as EPG.

In the terrestrial DMB broadcasting, the SI model is composed of classes for representing a service information structure transmitted through a DMB broadcasting network as shown in FIG. 1. The SI model defines a structure of MCI (Multiplex Configuration Information) and service related information transmitted through a fast information block (FIB) channel.

In most digital broadcasting systems, as shown in FIG. 1, the SI reception model uses a tree structure of service information structure. Therefore, when services are diversified, a user or an application program spends a lot of time searching for a required service and causes trouble. have.

The present invention has been proposed to solve the above problems, and by using an SI providing method using a query and a view method, it is possible to easily know the channel and service information available in the digital broadcasting network, digital An object of the present invention is to provide a service information providing method using a query and view method in a data broadcasting middleware.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to an aspect of the present invention, there is provided a method of providing service information in a digital data broadcasting receiving system, the method comprising: receiving a query for service information from an application program; Generating a service information view, which is a collection, and providing the same to the application program, wherein the service information view can be changed together when the service information database is updated, and confirm that an object is changed in the view. And can be used to create a linked view for another query.
The present invention also provides an apparatus for providing service information in a digital data broadcasting receiving system, comprising: an application program execution unit for receiving a query for service information for executing an application program; and an object by searching a service information database for the query. A view manager for generating a service information view, which is a set of data, and a data converter for converting low-level data of the objects included in the generated view into high-level data and providing the same to the application program. When the service information database is updated, the service information view is changed together. When the service information view is changed, the application program execution unit is notified of the change and another view is generated.

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The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, the SI reception model means an SI data management method, a providing method, and an providing device between an application program or a user and an SI decoder.

SI reception model in the present invention uses a query (query) and view (view) method. That is, the SI reception model according to the basic principle of the present invention requests a middleware through a query method to extract service or program information transmitted through a broadcast or communication network by a user or an application program, and in middleware including an SI decoding means. Search for a query at high speed, then pass the result to the application as an object. Here, the application programmer can easily create a program and easily perform a search by using a string representing a service or a program as a search expression for searching for a service or a program meeting a specific condition.

In addition, the present invention uses a view to show the results of the service or program information retrieved using the query. A view is a collection of objects retrieved by certain conditions specified by a query, and the view changes with it when the database is updated.

Another feature of the SI reception model proposed by the present invention is the generation of a linked view. In other words, by creating a query for a specific condition 1 to extract the list of the object to create a view 1, if the value of one of the attributes of the objects included in the view 1 is the view, the corresponding object of the objects included in the view 1 It is possible to create a new object list by collecting only the objects in the views corresponding to the property value. It is also possible to reduce the scope of program information desired by the user by creating a view for the condition list 2 again. That is, a query is generated for a specific channel set among service components to obtain a specific channel set that satisfies the query, to generate a view, and to generate a view for a program set that is one of the properties (or fields) of the channel set. By creating a query for a set of programs, you create a view of specific program information that meets the conditions. For example, after querying an audio channel with a query for a channel set among service components, obtain audio channel objects, obtain information about audio programs that are attributes of the channel, and then create a view. It extracts only the paid ones of the programs and creates the view.

2 is a block diagram of an apparatus for providing service information in a digital data broadcasting receiver for performing an SI reception model according to the principles of the present invention.

Referring to FIG. 2, the apparatus for providing service information includes an application program execution unit 210, an SI decoder stage 220, and an SI information database 230 in which various application programs are stored and executed. Here, specific examples of the interface, class, exception, and object interface type for implementing the SI decoder stage 220 are shown in Tables 1 to 4 below. In addition, specific examples of each object interface type are shown in [Table 5].

As described above, the SI information is generally organized information received from a broadcasting network and has a low level data structure. This low-level SI information must be copied into high-level data for the application to process. Therefore, as the signal exchange between the application execution unit 210 and the SI decoder stage 220 decreases, the storage and processing of SI information is more efficient.

Referring to FIG. 2, the operation of the service information providing apparatus will be described. First, the application program of the application executing unit 210 transmits a query of a predetermined condition to the SI decoder stage 220. Of course, the query of the predetermined condition can be given by the user using the application program. When the view manager 221 of the SI decoder stage 220 receives a query from an application program, the view manager 221 searches for SI information stored in the SI information database 230 to generate an SI view and provide the SI view to the corresponding application program. The user or application execution unit 210 may check the object list corresponding to the condition through the SI view provided by the view manager 221. In addition, the view manager 221 stores a query received from the application program, and monitors the data change of the SI information database to notify the application program when the information changes. When there is a request for object data from an application program, the view manager 221 transfers the low level data of the object to the data converter 223, and the data converter 223 is a high level for the application to use the received low level data. Performs the function provided by converting the data into the application program.

The view manager 221 generates a connected view in generating an SI view. That is, after obtaining specific objects necessary for generating a view from the SI information database 230, the additional information view can be generated from the attributes included in the fields of the objects, and additional conditions are given in the additional information view. You can create views based on more detailed conditions. Of course, the additional condition provided in the additional information view may be a condition received from an application program. An example of such a linked view is to get audio channel objects, get information about the audio programs that are the attributes of the channel, create a view, and then extract only the paid ones of the programs to create the view. It is.

Since the service providing apparatus according to the present invention has a query transmitted from an application program to the SI decoder, when the same query is received from the application program, it is not necessary to repeat the processing of the query. In addition, when the SI information received through the communication network is changed to notify the application program, it is possible to efficiently monitor the SI information.

3 is a flowchart illustrating a service information providing method using a query and view method in a digital data broadcasting receiver according to an embodiment of the present invention.

First, in step S10, the middleware (especially the SI decoder stage) receives a query from the application program. Next, in step S20, the middleware generates an SI view by searching the service information database with the received query. Of course, if the previously received query is the same as the previously received query, the stored SI view can be provided to the application without searching the database. Then, the SI view generated in step S30 is transmitted to the application program. Then, when a request for data for a specific object included in the SI view from the application program, in step S40, the middleware converts the low-level data for the object to a high-level data is provided to the application program.

An embodiment of an interface for implementing an SI decoder in the present invention is shown in Table 1 below.

Next, an embodiment of a class for implementing an SI decoder in the present invention is shown in Table 2 below.

In addition, an embodiment of an exception for implementing the SI decoder in the present invention is shown in Table 3 below.

Meanwhile, in the present invention, in case of terrestrial DMB, an embodiment of an SIObject interface type for implementing a DMB SI decoder is shown in Table 4 below.

Meanwhile, in the present invention, in the case of terrestrial DMB, an embodiment of an attribute used in each type (Table 4) of the SIObject interface for implementing the DMB SI decoder is shown in Table 5 below.

In addition, a temporary example of a method used in an SIView interface for implementing an SI decoder according to the present invention is shown in Table 6 below.

By using Table 1 to Table 6, by implementing the service information providing apparatus and method by the query and view method according to an embodiment of the present invention, it is possible to efficiently provide and manage the service information to the application program in the middleware for digital data broadcasting Can be.

Next, a temporary example using a query (SIQuery) and a view (SIView) is as follows.

SIAttributeSet = SIDatabase.getDefault ()

.getAttributeSet (Types.PROGRAM);

// Create SIDatabase composed of properties corresponding to SIObject of PROGRAM type.

 SIQuery q1 = v.get (Attribute.GENRE) .equal ("Movie");

// Create a query whose genre is Movie.

 SIQuery q2 = v.get (Attribute.FREE) .isTrue ();

// Create a query to check if it's free.

 SIQuery q = q1.and (q2);

// Create a query q that satisfies q1 and q2 at the same time. Here, the view for the query q corresponds to the above-described linked view.

 SIView programs = IDatabase.getDefault (). GetSIView (SIObject.PROGRAM);

 // Get a list of service information objects of the SIObject that represents the program and display it in the view

 SIObject [] result = programs.executeQuery (q);

// execute the query object q

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, provides an effect that allows the application programmer to easily create a program, facilitate the search, and save time required to search for service information in the middleware.

In addition, the present invention has an effect that can provide various types of data to the application and the user by providing a view composed of additional information in the object.

Claims (12)

In the method for providing service information in a digital data broadcasting receiving system, Receiving a query for service information from an application; Searching the service information database for the query to generate a service information view, which is a collection of objects, and providing the service information view to the application program; The service information view can be changed together when the service information database is updated, can confirm that an object is changed in the view, and can be used to create a linked view for another query. How to Provide. The method of claim 1, When the request of the object data included in the service information view from the application program occurs, converting the low-level data for the object to high-level data that can be used by the application program and further comprising the step of delivering to the application program. Service information providing method, characterized in that. The method of claim 1, And said linked view is configured according to attribute values of objects in said service information view. The method of claim 3, wherein And generating a new view again when receiving a query from the application program for the linked view. The method of claim 1, The query and view for the service information, Table 1 below. TABLE 1

The service information providing method, characterized in that represented by the interface defined in. The method of claim 5, wherein The class for the interface is shown in Table 2 below. TABLE 2

The service information providing method, characterized in that the database is configured as shown in [Table 2]. The method of claim 6, Properties of the objects included in the query and view are shown in Table 3 below. TABLE 3

Service information providing method, characterized in that defined as. An apparatus for providing service information in a digital data broadcasting reception system, An application program execution unit for receiving a query for service information for executing an application program; A view manager for searching a service information database for the query and generating a service information view which is a set of objects; It includes a data conversion unit for converting the low-level data for the object included in the generated view into high-level data to provide to the application program, The view manager changes the service information view when the service information database is updated, notifies the application execution unit when the service information view is changed, and generates a linked view for another query. Service information providing device. delete The method of claim 8, And the linked view is configured according to attribute values of objects in the service information view. The method of claim 10, The view manager receives a query from an application program for the connected view, and generates and stores a new view again. The method of claim 8, The properties of the objects included in the query and view are shown in the table below.

Service information providing device, characterized in that defined as.

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