KR100790626B1 - Method for providing user interface for data service in broadcasting receiver - Google Patents

Abstract

The present invention relates to a method for providing a user interface for data service in a broadcast receiver capable of receiving digital multimedia broadcasting.

A method for providing a user interface for a data service in a broadcast receiver according to the present invention includes searching for a list of data services transmitted through a broadcast channel currently being tuned and displaying the list on a display screen; When one data service is selected, the method includes receiving data corresponding to the selected data service and decoding the received data and displaying the received data on the screen.

DMB, Data Services, User Interface, EPG, BWS, TPEG

Description

A method for providing a user interface for data service in a broadcast receiver {Method for providing user interface for data service in broadcasting receiver}

1 is a schematic block diagram of a DMB receiver according to a preferred embodiment of the present invention;

2 is a diagram showing the structure of a DMB transmission frame according to the present invention;

3 is a flowchart illustrating a method for providing a user interface for a data service according to the present invention;

4A to 4F are diagrams illustrating an example of a user interface configuration for providing a data service according to the present invention.

Explanation of symbols on the main parts of the drawings

110: tuner 120: base band portion

130: demultiplexer 140: MPEG decoder

150: data decoder 165: graphics engine

170: display unit 180: menu screen generating unit

190: control unit

The present invention relates to a method for providing a user interface (UI) for a data service in a broadcast receiver, and more particularly, when receiving a data service in a broadcast receiver capable of receiving digital multimedia broadcasting (DMB), It relates to a user interface providing method for efficiently providing the data service.

DMB is a mobile multimedia broadcasting system that enables stable reception of video and CD level audio and various multimedia data services regardless of location and time using small terminals such as car small TVs, laptops, PDAs and mobile phones. For the first time, it is preparing service for commercialization by setting service standard and developing technology.

The DMB standard is based on Eureka-147 (European Research Coordination Agency Project-147), a technical standard for digital radio broadcasting (DAB) currently implemented in Europe. The DMB standard adds a specification for providing video services by adopting MPEG-4 technology in EUREKA-147. In addition, the DMB standard establishes technical standard standards for data services in addition to the video and audio services.

The data service to be supported by the DMB includes an XML-based EPG service, a slideshow, a broadcast web site (BWS), and a BIFS (Binary Format For) that provides information such as news and weather in connection with A / V. Transport Protocol Experts Group (TPEG), which provides information on scenes, traffic and travel.

The data service is classified into a 'program linked' and 'independent' service according to whether or not it is related to basic video and audio program contents. The program linked type is content composed of contents related to basic TV or radio broadcasting, and the standalone type is contents composed of contents independent of the TV or radio broadcasting contents. Among the aforementioned data services, BIFS corresponds to a program linked service, and other slideshows, BWS, EPG services, and TPEGs correspond to standalone data services.

The data service is multiplexed with the video and audio signals transmitted through the video channel and the audio channel or transmitted separately through the data channel according to whether or not the basic video and audio program contents are related. For example, a program linked data service is multiplexed and transmitted to a video or audio stream transmitted through a video or audio channel, and a standalone data service is transmitted through a separate data channel.

Meanwhile, the program linked data service is a data service related to a video or audio broadcast program being viewed, and is configured to be automatically displayed in association with the broadcast program. However, the standalone data service is configured to comply with the regulations set by each DMB receiver manufacturer. Accordingly, the present invention proposes a method for providing a standalone data service in a DMB receiver.

Accordingly, an object of the present invention is to provide a user interface that allows a user to easily recognize and select a received data service when receiving a standalone data service in a broadcast receiver.

In order to solve the above technical problem, a method for providing a user interface for a data service in a broadcast receiver according to the present invention includes: searching for and displaying a data service list transmitted through a broadcast channel currently being tuned; Receiving data corresponding to the selected data service when any one data service is selected by the user from the searched data service list; And decoding the received data and displaying the received data on the screen.

The data service list search may be searched when a data service list display request is received from the user.

The data service list display request may include: displaying a menu screen including the data service list menu in response to a menu key selection; And selecting the data service list menu on the menu screen.

The search for the data service is characterized by searching by decoding FIC (Fast Information Channel) data included in a transmission frame received through the broadcast channel.

Preferably, the method further comprises implementing and displaying the decoded situation as a progress bar before decoding and displaying the received data on the screen.

The searched data service includes a Transport Protocol Experts Group (TPEG) service, a slide show service, an XML-based Electronic Program Guide (EPG) service, and a broadcast web site service that provide traffic and travel information. It is characterized by including.

Hereinafter, with reference to the accompanying drawings will be described the present invention in more detail. However, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 is a schematic block diagram of a DMB receiver according to a preferred embodiment of the present invention.

As shown in FIG. 1, the DMB receiver according to the present invention includes a tuner 110, a base band unit 120, a demultiplexer 130, an MPEG decoder 140, a data decoder 150, a graphics engine 165, and a display unit. And a menu screen generator 175, a front panel 180, and a controller 190.

The tuner 110 tunes a broadcast signal corresponding to the DMB channel frequency set by the controller 190 and outputs the broadcast signal to the base band unit 120. The DMB channel includes three ensemble. Here, the ensemble is a signal transmitted from one broadcasting station and includes several services. Each service is a collection of service components, each of which has a subchannel ID. Accordingly, the user can select and view a desired service from among various services transmitted through the selected ensemble.

The base band unit 120 converts the DMB carrier tuned by the tuner 110 into a digital form, demodulates the OFDM signal by orthogonal frequency division multiplex (OFDM), and separates the FIC symbol and the MSC symbol.

The DMB sender transmits the content using the frame. As shown in FIG. 2, the DMB transmission frame transmitted by the DMB transmitting side includes a synchronization channel, a fast information channel (FIC), and a main service channel (MSC). The FIC is composed of a plurality of fast information blocks (FIBs), and the MSC is composed of a plurality of Common Interleaved Frames (CIFs).

The CIFs in the MSC contain actual data such as video data and audio data, and the FIBs in the FIC contain information indicating the structure of such data.

The FIC is a fast information data channel (FIDC) used for data services such as service information (SI), paging, and traffic message channel (TMC) including a service title and channel information, and a service type and a location of the MSC. It consists of MCI (Multiples Configuration Infrormation) which contains information such as, form, and conditional access (CA) used to encrypt a string of information in order to provide a specific service only to authorized subscribers.

The demultiplexer 130 includes an FIC demultiplexer 132 and an MSC demultiplexer 134 which demultiplex each of the FIC symbol and the MSC symbol output from the base band unit 120.

The MSC demultiplexer 134 demultiplexes the MSC data output from the baseband unit 120 into video data for a DMB service, audio data for a DAB service, and additional data for a data service. The MSC demultiplexer 134 outputs only the data corresponding to the service selected by the user among the separated data to the corresponding decoder under the control of the controller 190.

Audio data for the DAB service is output to an audio decoder (not shown), video data for the DMB service is output to the MPEG decoder 140, and additional data for the data service is output to the data decoder 150. do.

The MPEG decoder 140 includes a TP demultiplexer 142, an MPEG-2 system decoder 144, and an MPEG-4 audio / visual decoder 146.

The TP demultiplexer 142 decodes the video data output from the MSC demultiplexer 134 and outputs a TS stream.

The MPEG-2 system decoder 144 decodes the TS stream output from the TS demultiplexer 142 into an A / V stream and a BIFS (Binary Format for Scene) stream.

The MPEG-4 audio / visual decoder 146 decodes the A / V stream output from the MPEG-2 system decoder 144 and outputs the decoded A / V stream to the graphics engine 165. The A / V data output from the MPEG-4 audio / visual decoder 146 is signal-processed by the graphics engine 165 and then output to the outside through the display unit 170.

The data decoder 150 includes a MOT decoder 152, an EPG engine 153, a JPEG decoder 154, a BWS engine 155, and a TPEG engine 156.

The MOT decoder 152 demultiplexes the additional data output from the MSC demultiplexer 134 to display EPG data for an EPG service, a JPEG file for a slide show service, and a website for a broadcast website service (BWS). Separate files into related files and data for the Transport Protocol Experts Group (TPEG) service.

The EPG service is a service for providing program guide information related to DMB broadcasting, and the slide show service is a service for transmitting a series of picture files at predetermined time intervals. The BWS service is a service for providing a web service similar to the Internet web service, and the TPEG service is a service for providing information such as traffic and travel.

The EPG engine 153 parses service information (SI), program information (PI), and the like from the EPG data output from the MOT decoder 152 using an embedded XML (eXtensible Markup Language) parser. parsing), and inserted into the corresponding field of the EPG table stored in the EPG DB 160 to configure EPG information.

The JPEG decoder 154 decodes the JPEG file output from the MOT decoder 152 and outputs the JPEG file to the graphics engine 165.

The BWS engine 155 decodes website-related files output from the MOT decoder 152, and composes and outputs a web page for a BWS service using the decoded information.

The TPEG engine 156 decodes TPEG service related data output from the MOT decoder 152, and composes and outputs a screen for TPEG service using the decoded data.

The menu screen generator 175 generates a menu screen for independent data service guidance according to the present invention under the control of the controller 190.

The front panel 180 is a user interface means and receives from the user an operation command for setting or selecting a function provided by the DMB receiver and outputs it to the controller 190. To this end, the front panel 180 includes a key input unit 182 provided with various function keys, direction keys, numeric keys, and the like, and a light receiving unit 184 for receiving an infrared signal transmitted from a remote controller (not shown).

The controller 190 controls the overall operation of the DMB receiver according to a user manipulation signal applied from the front panel 180. For example, the controller 190 controls the demultiplexer 130 to decode and output a service selected by a user among a plurality of services received through the DMB channel.

When the user requests the display of the data service list, the controller 190 retrieves the data service transmitted through the channel currently being tuned and displays the displayed service on the display unit 170. . The data service according to the present embodiment is a standalone data service. As described above, an XML-based EPG service, a slide show service, a BWS service, and a TPEG service may be mentioned.

Hereinafter, a method of providing a user interface for a data service according to the present invention will be described with reference to FIGS. 3 and 4A to 4F.

3 is a flowchart illustrating a method for providing a user interface for a data service according to the present invention, and FIGS. 4A to 4F are diagrams illustrating an example of a user interface for providing a data service according to the present invention.

First, while displaying a service selected by the user among a plurality of broadcast services transmitted through the DMB channel (S210), if a data service list display request signal is received from the user (S220), the controller 190 controls the DMB channel. Search for all data services transmitted through the three ensemble included in (S230).

The data service list display request includes selecting a data service list button (not shown) provided in the key input unit 182 or the remote controller, or a menu screen displayed on the screen of the display unit 170 as shown in FIG. 4A. This is done by selecting the Data List menu. The menu screen including the data list menu is displayed when a menu key (not shown) provided in the key input unit 182 or the remote controller is selected.

In addition, whether a data service is transmitted through three ensembles included in the DMB channel may be checked by searching for FIC data output from the FIC demultiplexer 132.

Next, the controller 190 processes the data service list searched through the step 230 to display an OSD screen on a predetermined area of the screen of the display unit 170 (S240). Accordingly, as shown in FIG. 4B, an OSD screen indicating a list of searched data services is displayed on the screen of the display unit 170.

When a data service (eg, TPEG service) of any of the data service lists displayed on the screen of the display unit 170 is selected by the user (S250), the controller 190 separates and outputs the MSC demultiplexer 134. The data decoder 150 controls the data decoder 150 to receive and decode the TPEG service related data from the additional data.

The control unit 190 implements the menu screen generation unit 175 to implement the decoded situation as a progress bar and display it on the screen before decoding the TPEG service related data and displaying it on the screen. To control. Accordingly, as shown in FIG. 4C, a menu screen including a progress bar is displayed on the screen of the display unit 170. The user may estimate the time required for the selected data service screen to be displayed on the display unit 170 through the progress bar.

The controller 190 processes the DMB broadcast that was previously viewed until the selected data service screen is displayed to continue watching.

Finally, when the decoding of the selected TPEG service-related data is completed (S270), the controller 190 constructs a TPEG service screen with the decoded data and displays it on the display unit 170 (S280). Accordingly, the screen of the display unit 170 is switched to the TPEG service screen as shown in FIG. 4D.

Meanwhile, according to the present invention, as shown in FIG. 4D, a menu related to the selected data service screen may be separately configured. Therefore, the user can change the data service screen to the form desired by the user.

For example, when a user selects a TPEG menu, a submenu is provided to select text information and map information as illustrated in FIG. 4E, and a menu included in the submenu is provided when the submenu is selected. In other words, when the 'Bridge' menu is selected in FIG. 4E, TPEG data indicating traffic conditions of the Han River Bridge is displayed on the screen of the display unit 170 as shown in FIG. 4F.

As such, when an additional function is included in the selected data service, a menu screen for selecting the additional function may be configured to allow a user to configure the data service screen in a desired form using the additional function.

Although the present invention has been described in detail with reference to the exemplary embodiments above, those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention. I will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As described above, according to the present invention, a list of data services that can be received in a channel currently tuned according to a user's request is informed, and if any one of the data services is selected by the user, the selected data service is displayed. Display on the screen. As such, the present invention provides a user convenience by providing a user interface that allows a user to easily select a desired data service in relation to the data service.

In addition, according to the present invention, for a data service that takes a certain time to display among the data service selected by the user, while providing a user interface that allows the user to predict the time required for providing the service, It is possible to continue to watch programs that were previously being watched while waiting for service.

Claims (6)

delete delete delete Searching for a data service by decoding fast information channel (FIC) data included in a transmission frame received through a digital multimedia broadcasting channel currently being tuned, and displaying the searched data service on a screen as a list; Receiving any data corresponding to the selected data service when any one data service is selected by the user from the displayed data service list; And Decoding the received data and displaying the received data on the screen; and providing a user interface for a data service in a broadcast receiver. delete delete

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