KR100763379B1 - apparatus and method for scenario search of menu formula - Google Patents

Abstract

The present invention is to provide a new device and method for easily and quickly searching the information required in the menu-based MHEG scenario, the MHEG scenario search device when the corresponding header is found in the comment by searching the object header A first step of starting a second step of searching for a service gateway to find an application object starting a top-level item, decoding the same, generating a data structure of itself and a child item, and securing a storage area; and A third step of storing the title and position detected from the data and the title of the child in the corresponding item secured in the storage area, and displaying the requested data on the screen when the MHEG scenario is requested by the user; Selected items have subcategories A fourth step in which the tree is displayed on the corresponding item by searching and displaying a sub-category, and this process is continued until there is no sub category, and when the item to be searched by the user is selected among the sub categories, And a fifth step of displaying on the screen.

MHEG scenario

Description

Apparatus and method for scenario search of menu formula}

1A to 1D are diagrams illustrating a navigation method of a menu-based MHEG scenario according to the prior art.

2 is a block diagram showing an apparatus for searching a MHEG scenario according to the present invention;

3A to 3F are diagrams illustrating a method of searching for a menu-based MHEG scenario according to the present invention.

* Explanation of symbols for main parts of the drawings

10: front end 20; MPEG decoder

30: DSM-CC section filter 40: SI table manager

50: Downloader 60: OC

70: DSM-CC API 80: MHEG Engine

90: Launcher 100: Header information request / filter

110: tree structure data manager 120: user interface

130: UI TreeView Manager 140: ShortCut

150: bookmark manager 160: nonvolatile memory

The present invention relates to a design and a search method of an apparatus for efficiently searching a menu-based MHEG scenario in a digital TV.

In recent years, many countries around the world adopting digital TV standards, especially in Europe, where regular broadcasting has begun, have been actively researching the DVB (Digital Video Broadcasting) standard.

Among the standards adopted by the DVB, the Multimedia and Hypermedia information coding Expert Group (MHEG) is an international standard for scenario description methods for producing multimedia or hypermedia titles by encoding a combination of multimedia information and manipulations as an object. This can be called.

This enables users to provide interactive multimedia / hypermedia applications to users even in a distributed environment composed of different platforms. In multimedia and hypermedia communication, the transmitting side loads a large amount of information in a TS stream and encodes and sends them. And parsing the TS stream including a plurality of pieces of information at the receiving end to extract and decode the carried information.

A general digital TV receiver decodes broadcast data and MHEG data in a TS stream and displays them on a digital TV's own CRT, thereby allowing viewers to watch various broadcast information.

Various applications using this are currently in use and are still under development.

In the MHEG application, a general interface method is a menu method, and most of the MHEG applications currently being broadcast are configured in this manner.

The description of the MHEG application will be described in detail with reference to FIGS. 1A to 1D.

Each of the screen windows shown in FIGS. 1A to 1D is an information window according to digital teletext broadcasting, which is recognized as a new information source for providing the latest information on news, weather, economy, etc. in real time to obtain necessary information. .

It is assumed that news, sports, weather, TV / radio / web, and economic items are displayed on the screen as the first category through the broadcast received as shown in FIG. 1A.

At this time, if the user wants to search with interest in who won the Nobel Prize this year, he selects 'News' item that may have information according to the Nobel Prize.

When the user selects the 'news' item, as shown in FIG. 1B, the content corresponding to the lower item having a category lower than the 'news' item is displayed in the information window.

The user then selects the 'world' item from which the main news, domestic, world, regional, and social items may have information based on the Nobel Prize they are looking for.

Sub-items with a category lower than that of the selected 'world news' item are displayed in the information window as shown in FIG. 1C.

The 2000 Nobel Prize Winners, the Israeli Palestine, Clinton Sex Scandal, US Presidential Candidates, and British Digital TV Broadcasting Items, which are displayed in the information window, are displayed as shown in FIG. 1D. You will find and verify the contents.

However, the MHEG application according to the related art described above has the following problems.

First, it takes a lot of time to search for the information the user wants because the information must be found by entering a new screen each time from the top item to the bottom item sequentially.

Second, if the user lacks information on each menu compared to the content they are looking for, they may enter the wrong category and may not find the desired information. In addition, it may be inconvenient to return to the upper category in order to search again.

Third, there is a problem that it is difficult to grasp the structure and size of the entire information at a glance.

Accordingly, an object of the present invention is to provide a novel apparatus and method for easily and quickly searching for necessary information in a menu-based MHEG scenario.

Another object of the present invention is to provide a method for a user to easily recognize information on sub-items in a menu-based MHEG scenario.                         

Another object of the present invention is to provide a method for a user to easily recognize the overall structure and scale of a scenario.

Features of the menu-based scenario search apparatus according to the present invention for achieving the above object is a DSM-CC section filter unit for separating section data from the received data stream, and the DSM-CC section filter unit for managing the separated By using the SI table manager to search for the presence of BIOP messages in section data, the downloader unit to download and reassemble the section data separated from the DSM-CC section filter unit into module data, and the BIOP message retrieved from the SI table manager. An OC constituting a BIOP object with the module data reassembled by the downloader unit, an MHEG engine for displaying a basic item on a screen by performing an operation of an MHEG application using the BIOP object configured in the OC, and an item selected by the user. Launcher that receives the object location as a string and delivers it to the MHEG engine A header info requester / filter unit for requesting an MHEG application object of an item displayed by the MHEG engine and decoding the requested MHEG application object; and a MHEG application object decoded by the header info requester / filter unit in a tree form. A data manager which stores the structure and provides the requested information in a tree form, a user interface which displays a screen using information provided by the data manager and receives input from a user, and which is provided by the user interface. The tree-type item is configured to include a UI TreeView manager which expands / collapses a tree according to a user's request or receives a launch command of the item.

And it further comprises a DSM-CC API unit for generalizing and forwarding the application request requested to the OC and the return value to the application again.

And it is configured to further include a ShortCut unit for receiving the location (location) of the object delivered to the launcher from the user has another feature.

It further comprises a bookmark manager for selectively storing the location of the item delivered to the launcher in a non-volatile memory, and read the stored item at the request of the user.

A feature of the menu-based scenario search method according to the present invention for achieving the above object is a first step of starting the MHEG scenario search device and searching for a service gateway when the corresponding header is found in the comment by searching for the corresponding object header. A second step of finding an application object starting a top-level item, decoding it to create a data structure of itself and a child item, and securing a storage area, and a title and a location of the detected item from the decoded data, and a child Storing the title of the title in the corresponding item secured in the storage area, and displaying the requested data on the screen when the MHEG scenario is requested by the user; and sub-categories for the item selected by the user among the displayed plurality of items. Search for and expand the tree to show or A fourth step that indicates the above category and is continuously performed until there is no sub category, and a fifth step of displaying information according to the item on the screen when an item to be searched by the user is selected among the sub categories. It is done by

Requesting a bookmark for the corresponding item displayed in the fifth step, storing the location string of the corresponding item in a designated bookmark space of the nonvolatile memory; and reclaiming the location string stored in the nonvolatile memory. It further comprises the step of displaying the item on the screen by using a different feature.

The corresponding item displayed in the fifth step includes receiving a location string of an MHEG application from a user through a ShortCut input window, and displaying a corresponding item stored in a storage unit on the screen using the input string. It is made to include more.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Referring to the accompanying drawings, a preferred embodiment of the menu type scenario search apparatus and method according to the present invention will be described.

2 is a block diagram showing an apparatus for searching a MHEG scenario according to the present invention.

Referring to FIG. 2, when receiving a digital TV MPEG stream through a front end 10, which is a radio wave receiver, the MPEG decoder 20 separates the received MPEG stream into an audio / video stream and a data stream. .

In the DSM-CC section filter 30, the separated data stream is separated into section data such as a table and a BIOP message.

At this time, the DSM-CC section filter 30 is managed by the SI table manager 40 and searches for the presence of a separated BIOP message to operate the object carousel (OC) 60.

In response to the request of the OC 60, the downloader 50 downloads the separated section data, reassembles it into module data, and delivers it to the OC 60 again.

Then, the OC 60 constructs a BIOP object such as a directory, a file, a stream, a stream event, and the like using module data transmitted from the downloader 50 using the information of the BIOP message received from the SI table manager 40, and MHEG. Perform the operation according to the request of the application.

At this time, the operation is to deliver an object of a specified location or a list of directories.

In addition, the DSM-CC API 70 generalizes the request of the application and delivers it to the OC 60 and delivers a return value to the application. The MHEG engine 80 uses the BIOP object received from the OC 60. To perform the operation of the MHEG application and display basic items on the MHEG screen.

At this time, the launcher 90 receives the location of the object as a string and delivers the location to the MHEG engine 80 to operate the application at the location.

The header information request / filter 100 requests a corresponding MHEG application object among the items displayed on the MHEG scenario search apparatus screen 120 and decodes the corresponding data received from the downloader 50. do.

At this time, the header of the MHEG application object defines the title, position, subordinate title and position of the item in the form of annotation.

The data decoded by the header info request / filter 100 is transferred to the tree structure data manager 110.

At this time, the header data is configured in the following format.

{COMMENT> !!! MENU_NAVIGATION_MARKER

TITLE> world news

LOCATION> DSM: // 01/03 / a

NUMBEROFCHILD> 4

{

TITLE> 2000 Nobel Laureates

LOCATION> DSM: // 01/03 / b

TITLE> Israel-Palestine

LOCATION> DSM: // 01/03 / c

...

}

}

In this way, the title and location of the current item and the item and location of the sub-scenario can be checked.

The data manager 110 receives the data configured in this format from the header information request / filter 100 and stores the data in a tree data structure and displays the data on the screen 120. At this time, if the data structure stored in the data manager 110 is expressed in the general C syntax as follows.

struct TREE_DATA {

UI_LOCATION * pMyItemView_Pointer,

char * pTitle_String,

char * pLocation_String,

}

The pMyItemView is a UI management object corresponding to an item of the tree screen displayed on the screen 120 that is a user interface (UI), and the pTitle_String represents the title of the item and the pLocation_String represents the location of the item. .

At this time, the pMyItemView is managed by the UI TreeView manager 130. The UI TreeView manager 130 receives a launch command for expanding or contracting the tree or launching the item according to a user's request.                     

In addition, the data manager 110 provides information requested by a user through a user interface.

That is, when a launch is requested, pLocation_String among the structures stored in the data manager 110 is passed to the launcher 90. When a corresponding item is searched, the child items of the tree are searched by searching for the child items of the tree. Pass pTitle_String.

The user interface 120 then displays the screen using the transmitted information and receives the user's input.

In addition, if the user knows the location of the MHEG application by placing the ShortCut unit 140 to directly enter the location information of the MHEG application to display the information screen, the user-entered string is a launcher (90) Is transmitted to the MHEG engine 80 through. At this time, the user's input means is input in the same way as the text input method of a general telephone.

And a bookmark manager 150 to selectively store the position of the item placed by the cursor of the MHEG scenario search device in the NVRAM 160 and launch the item stored in the NVRAM 160 according to a user's input. Deliver to the (launcher) 90 to perform the corresponding MHEG application. In this case, the NVRAM 160 is statically allocated to store the storage space as a predetermined number of strings in advance.

The operation of the MHEG scenario search apparatus according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, if there is an MHEG application, start the MHEG scenario search device.                     

At this time, whether or not to start the scenario search device may be determined by the MHEG engine 80. When the corresponding header is found in the comment sentence by searching the corresponding object header, the MHEG scenario search device is started.

In addition, when the request unit in the header information request / filter 100 requests the top-level entry object to the OC 60, the OC 60 searches for the service gateway corresponding to the root directory of the general file system and starts the top-level entry. Find the object and pass it to the decoder in the header information request / filter 100.

Then, the decoder decodes the header of the delivered object and delivers it to the data manager 110. The data manager 110 creates a data structure of itself and child items and secures a memory area.

The title and position detected from the decoded data and the title of the child are stored in the corresponding item of the structure, and when the user requests the MHEG scenario through the UI TreeView manager 130, the requested data is stored as shown in FIG. 3A. Display.

Then, the user selects while moving the cursor to a desired menu among a plurality of items displayed on the screen, and the data of the selected item is requested to the OC 60.

Subsequently, the OC 60 downloads the requested data through the downloader 50, and when the data is downloaded, decodes the header of the received data and stores it in the data manager 110. In addition, when there is a lower item, a tree expandable display (??) is displayed on the screen as illustrated in FIG. 3B using the UI TreeView manager 130.                     

When the tree extension signal is input from the user, the sub-category is represented as shown in FIG. 3C by using the UI TreeView manager 130.

In this manner, as shown in FIGS. 3D and 3E, the user searches for a subcategory using a cursor to a desired item, and when the user requests a launch from the desired item, the location information of the item is retrieved from the data manager ( 110 to the launcher 90.

In addition, the launcher 90 transmits the location information input to the MHEG engine 80 and displays the information according to the corresponding item as shown in FIG. 3F.

In addition, when the user requests a bookmark from the displayed item, the bookmark manager 150 requests the location string of the corresponding item from the data manager and records the received location string in the designated bookmark space of the NVRAM 160.

When requesting to reread the location string recorded in the NVRAM 160 using a bookmark, the bookmark manager 150 reads the string recorded in the bookmark designation space of the NVRAM 160, and the string is the launcher 90. By passing through the MHEG engine 80 to run the MHEG application of the location.

In addition, when the user directly inputs the location string of the MHEG application that is known through another path through the ShortCut input window 140, the input input string is transmitted to the Launcher 90 and input to the MHEG engine 80. . The MHEG engine 80 receives the object of the corresponding position from the OC 60 to execute the MHEG application.

 As described above, the apparatus and method for searching a menu type scenario according to the present invention have the following effects.

First, the menu-based MHEG application can be displayed in a tree format so that the menu structure can be navigated only by the title, so that the necessary information can be found more quickly and easily than the general search method that requires entering the respective screens in sequence.

Second, the relationship between the menu top and bottom items and the overall structure of the scenario can be easily understood.

Third, it can be applied to the fields such as MHEG scenario design, so that the designer can easily grasp the structure and scale of the entire scenario to facilitate the design.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (8)

A DSM-CC section filter unit for separating section data from the received data stream; An SI table manager for managing the DSM-CC section filter unit and searching for the presence of a BIOP message in the separated section data; A downloader unit for downloading and reassembling the section data separated by the DSM-CC section filter unit into module data; An OC constituting a BIOP object with module data reassembled by the downloader using a BIOP message retrieved from the SI table manager; An MHEG engine for displaying a basic item on a screen by performing an operation of an MHEG application using a BIOP object configured in the OC; A launcher which receives the object location of the item selected by the user as a string and delivers it to the MHEG engine; A Header info Requester / Filter unit for requesting an MHEG application object of an item displayed by the MHEG engine and decoding the requested MHEG application object; A data manager which stores the MHEG application object decoded by the header info requester / filter unit in a tree form and provides the requested information in a tree form; A user interface unit which displays a screen by using information provided from the data manager unit and receives a user input; Menu-type scenario, characterized in that the tree-type items provided by the user interface unit includes a UI TreeView manager unit for expanding / contracting the tree according to a user's request, or receiving a launch command of the item Navigation device. The method of claim 1, And a DSM-CC API unit which generalizes and transmits the application request requested to the OC and delivers a return value to the application. The method of claim 1, And a ShortCut unit which receives a location of an object delivered to the launcher from a user. The method of claim 1, And a bookmark manager for selectively storing the location of the item delivered to the launcher in a nonvolatile memory, and reading the stored item in response to a user's request. The method of claim 1, The MHEG application object is a menu type scenario navigation apparatus, characterized in that the title and location of each item, the title and location of the parent and child items. A first step of searching for the corresponding object header and starting the MHEG scenario search device when the corresponding comment header is found in the comment; A second step of searching for a service gateway to find an application object that starts the top-level item, decoding it to create a data structure of itself and its child items, and freeing storage space; A third step of storing the title and the position detected from the decoded data and the title of the child in the corresponding item secured in the storage area, and displaying the requested data on the screen when the MHEG scenario is requested by the user; , A fourth step of searching for whether there is a subcategory in the item selected by the user among the displayed plurality of items and displaying a tree expandable display or a subcategory for the item, and the process is continuously performed until there are no subcategories; And a fifth step of displaying information according to the item on the screen when an item to be searched by the user is selected among the sub categories.  The method of claim 6, Requesting a bookmark for the corresponding item displayed in the fifth step, storing a location string of the corresponding item in a designated bookmark space of the memory; And displaying a corresponding item on the screen by using a location string stored in the memory when a read request is requested. The method of claim 6, The corresponding item displayed in the fifth step includes receiving a location string of the MHEG application from the user through the ShortCut input window; And displaying a corresponding item stored in a storage unit on a screen by using the input position string.

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