KR100727171B1 - Commnication Terminal for selectively displaying channel information of multimedia broadcasting and automatically connecting multimedia broadcasting, and Method for automatically connecting multimedia broadcasting - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a communication terminal capable of selectively displaying multimedia broadcasting channel information and enabling automatic multimedia broadcasting access, and a method for automatically accessing multimedia broadcasting.

2. The technical problem to be solved by the invention

According to the present invention, when a DMB broadcaster inserts an identification code into broadcast content and transmits the identification code, the identification code can be selectively displayed, and the communication terminal and multimedia broadcasting can be automatically connected to the corresponding broadcast by recognizing the recognition code with a camera. Its purpose is to provide an automatic connection method.

3. Summary of Solution to Invention

The present invention provides a communication terminal capable of automatically accessing a multimedia broadcasting using a channel recognition code transmitted by a broadcasting station together with a broadcast signal, comprising: a camera for photographing a recognition code inserted into a broadcast screen; A memory unit for storing broadcast channel information; A control unit which controls a communication terminal and reads broadcasting channel information corresponding to an identification code photographed by the camera from the memory unit and delivers the broadcasting channel information to a rear RF unit; And an RF unit for selecting a corresponding broadcast signal according to the broadcast channel information transmitted from the controller.

4. Important uses of the invention

The present invention is used for DMB service and the like.

Recognition code, DMB, auto connection, camera

Description

Communication terminal for selectively displaying channel information of multimedia broadcasting and automatically connecting multimedia broadcasting, and Method for automatically connecting multimedia broadcasting}

1 is a diagram showing the structure of a DMB transmission frame;

FIG. 2 is a diagram showing an embodiment of DMB multiplexing using the DMB transmission frame of FIG. 1; FIG.

3 is a view illustrating classification of subchannels of FIG. 1;

4 is an example of an identification code;

5 is a configuration diagram of an embodiment of a communication terminal capable of automatic connection of DMB broadcasting according to the present invention;

6 is a flowchart illustrating a method for automatically accessing a multimedia broadcasting according to the present invention;

7 is a flowchart illustrating a method for automatically accessing a multimedia broadcast according to the present invention.

* Explanation of symbols for the main parts of the drawings

510: mobile communication RF unit 520: memory

530: Camera 540: LCD

550: key input unit 560: DMB RF unit

570: OFDM demodulator 580: decoding unit

590 control unit

The present invention relates to a communication terminal capable of selectively displaying multimedia broadcasting channel information and automatically accessing multimedia broadcasting, and more particularly, to a method of automatically connecting multimedia broadcasting, and more particularly, when a broadcasting station inserts an identification code into a multimedia broadcasting and transmits the identification code. The present invention relates to a wireless communication terminal and a method for automatically accessing a multimedia broadcasting, which can be selectively displayed and automatically connected to the multimedia broadcasting by recognizing the recognition code through a camera.

Multimedia Multimedia Broadcasting (DMB) service is a service that allows consumers to receive high-quality broadcasting services on the go through various types of terminals available to consumers.

In order to use a broadcast program in the current DMB service, the user needs to download an electronic program guide (EPG) and directly select and access a desired program in the ensemble. In other words, in order to find a desired broadcast program, the user has to find and access the entire electronic program guide one by one.

The present invention has been proposed to solve the above problems, and when a DMB broadcaster inserts and transmits an identification code to broadcast content, the identification code can be selectively displayed, and the corresponding broadcast is recognized by recognizing the identification code with a camera. It is an object of the present invention to provide a method for automatically accessing a communication terminal and a multimedia broadcast automatically.

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 communication terminal capable of automatically accessing a multimedia broadcast using a channel recognition code transmitted by a broadcast station together with a broadcast signal, comprising: a camera for photographing a recognition code inserted into a broadcast screen; A memory unit for storing broadcast channel information; A control unit which controls a communication terminal and reads broadcasting channel information corresponding to an identification code photographed by the camera from the memory unit and delivers the broadcasting channel information to a rear RF unit; And an RF unit for selecting a corresponding broadcast signal according to the broadcast channel information transmitted from the controller.

The present invention also provides a communication terminal capable of automatically accessing a multimedia broadcasting using a channel recognition code transmitted by a broadcasting station together with a broadcast signal, comprising: a camera for photographing a recognition code inserted into a broadcast screen; RF unit for transmitting and receiving the RF signal; And transmitting the recognition code photographed by the camera to an external server through the RF unit, receiving broadcast channel information corresponding to the identification code from the external server through the RF unit, and transmitting the received broadcast channel information to the RF unit. And a controller for controlling the RF unit to select a corresponding broadcast signal.

In another aspect, the present invention provides a method for automatically accessing a multimedia broadcast in a multimedia broadcast receiving terminal, comprising: a recognition code photographing step of photographing a recognition code inserted into a broadcast screen being played by another terminal with a camera; Channel information obtaining step of acquiring broadcast channel information corresponding to the captured recognition code; And a broadcast access step of selecting and accessing a corresponding broadcast signal based on the obtained broadcast channel information.

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.

1 is a structure of a DMB transmission frame.

As shown in FIG. 1, the DMB transmission frame includes a synchronization channel (SC) 110, a fast information channel (FIC) 120, and a main service channel (MSC) 130. do.

The synchronization channel 110 includes information for frame synchronization, carrier frequency synchronization, channel state estimation, and basic demodulation for the received signal.

The fast information channel 120 is composed of a plurality of fast information blocks (FIBs) to convey control information necessary to interpret the configuration of the primary service channel. The fast information channel 120 is composed of Service Information (SI), Fast Information Data Channel (FIDC), Multiplex Configuration Information (MCI), Conditional Access (CA), and the SI includes a service title and channel information. Provides urgent data services such as paging, traffic message channel (TMC) and emergency warning system (EWS), and MCI interprets the main service channel including information such as service type and location type. CA is used to encrypt a string of information to provide specific services only to authorized subscribers.

The main service channel 130 is composed of a plurality of Common Interleaved Frames (CIFs) to insert broadcast data to be transmitted. The main service channel is configured by multiplexing multiple services as shown in FIG. 2. In particular, the identification code according to the invention is inserted into the main service channel and transmitted by the DMB broadcasting station.

FIG. 2 is a diagram illustrating an embodiment of DMB multiplexing structure using the DMB transmission frame of FIG. 1.

As shown in FIG. 2, the DMB multiplexing structure includes an ensemble as a top-level structure, and includes a service, a service component, and provided content includes a plurality of contents of a main service channel (MSC). It is carried on a sub channel. Here, the ensemble means a DMB broadcasting station, a service means a type of broadcast program such as sports, news, education, entertainment, etc., and a service component means a broadcast program that is actually provided when the service is selected.

As shown in FIG. 3, the sub-channel of FIG. 2 is divided into a video channel 310, an audio channel 320, and a data channel 330. The DMB broadcasting station inserts a recognition code directly into the broadcast content to insert the video channel 310. ), Or may be separately transmitted by inserting an identification code into the data channel 330. At this time, the broadcasting station logo may be used as the identification code, or a specific character such as KBS, MBC, SBS, or a barcode (or hot code) may be used, but is not limited thereto. 4 shows an example of using "KBS CH 1" as an identification code.

5 is a configuration diagram of a communication terminal for selectively displaying DMB channel information according to the present invention and enabling automatic connection of DMB broadcasting.

If a user watches a broadcast through another DMB terminal or a DMB receiver and wishes to see a broadcast currently being viewed by his or her terminal, the camera 530 illustrated in FIG. 4 is first inserted into the broadcast screen of the other DMB terminal or the DMB receiver. Take a picture of the identification code.

The controller 590 compares the identification code transmitted from the camera 530 with the channel information stored in the memory 520. As channel information, a value corresponding to the recognition code is used. For example, if the same recognition code used by the broadcasting station is stored in the memory 520 and channel information is mapped for each stored recognition code, the controller 590 recognizes the captured recognition code and the recognition stored in the memory 520. By comparing codes, channel information of the same recognition code can be read. The channel information may be stored in the memory 520 at the terminal production stage or downloaded through the mobile communication provider.

The controller 590 compares the identification code with the channel information stored in the memory 520 and transmits the corresponding broadcast channel information to the DMB RF unit 560. The DMB RF unit 560 selects a corresponding broadcast signal according to the broadcast channel information transmitted from the controller 590, and transfers the selected broadcast signal to the OFDM demodulator 570. The OFDM demodulator 570 OFDM demodulates the broadcast signal, and the decoder 580 decodes the OFDM demodulated signal and transmits the demodulated signal to the controller 590. The controller 590 reproduces the decoded broadcast through the LCD 540 so that the user can watch the broadcast.

On the other hand, if the user watching the DMB broadcast through the terminal of Figure 5 feels inconvenient to see the screen by the recognition code, it can be removed on the display (LCD, 540). At this time, the removal of the recognition code is possible when the recognition code is transmitted through the data channel.

When the user releases the recognition code display by selecting a menu related to recognition code display through the key input unit 550, the controller 590 may prevent the recognition code from being displayed by decoding only the broadcast signal from the received broadcast data. Alternatively, the recognition code inserted in the data channel is also decoded, but the decoding code is not transmitted to the LCD 540 so that the recognition code is not displayed on the screen.

That is, the broadcast signal inserted with the recognition code inserted into the data channel is received through the DMB RF unit 560, OFDM demodulated by the OFDM demodulator 570, and then input to the decoder 580. The decoder 580 simultaneously decodes the recognition code and the broadcast signal inserted into the data channel, or decodes only the broadcast signal and transmits it to the controller 590.

If the decoding unit 580 decodes only the broadcast signal, the control unit 590 transmits the decoded broadcast signal to the LCD 540 to allow the user to watch only a broadcast without an identification code.

Alternatively, when the decoding unit 580 simultaneously decodes the recognition code and the broadcast signal, the control unit 590 discards the recognition code from the decoded recognition code and the broadcast signal and transmits only the broadcast signal to the LCD 540 so that the user recognizes the recognition code. Watch broadcasts that are missing.

On the other hand, the above description has been described in the case where the channel information corresponding to the identification code is stored in the terminal internal memory 520, if the channel information is not stored in the terminal internal memory 520, the identification code using an external server You can make a comparison.

That is, the controller 590 transmits the code recognized by the camera 530 to an external server through the mobile communication RF unit 510, and the external server compares the code transmitted from the terminal with the channel information stored in the internal database. Send the result to the terminal. For example, if a recognition code identical to a recognition code used by a broadcasting station is stored in a database, and channel information is mapped to each stored recognition code, the external server compares the captured recognition code with the recognition code stored in the database to determine the same recognition code. Channel information can be read.

The control unit 590 of the terminal receives the comparison result from the external server through the mobile communication RF unit 510, and transmits the corresponding broadcast channel information to the DMB RF unit 560. The DMB RF unit 560 selects a corresponding broadcast signal according to the broadcast channel information transmitted from the controller 590, and transfers the selected broadcast signal to the OFDM demodulator 570. The OFDM demodulator 570 OFDM demodulates the broadcast signal, and the decoder 580 decodes the OFDM demodulated signal and transmits the demodulated signal to the controller 590. The controller 590 reproduces the decoded broadcast through the LCD 540 so that the user can watch the broadcast.

6 is a flowchart illustrating a method for automatically accessing a multimedia broadcast according to the present invention.

As shown in FIG. 6, a broadcast station inserts an identification code directly into broadcast content to transmit broadcast content, or transmits an identification code separately from broadcast content through a data channel (601).

When a user watches a broadcast through another DMB terminal or a DMB receiver and the like, and views the broadcast on his or her own terminal, the identification code inserted in the broadcast screen is photographed using the camera 530 of the terminal (602).

The controller 590 of the terminal compares the photographed recognition code with channel related information stored in the memory 520 and transmits corresponding broadcast channel information to the DMB RF unit 560 (603). For example, if the same recognition code used by the broadcasting station is stored in the memory 520 and channel information is mapped for each stored recognition code, the controller 590 recognizes the captured recognition code and the recognition stored in the memory 520. By comparing codes, channel information of the same recognition code can be read.

The DMB RF unit 560 selects a corresponding broadcast signal according to the broadcast channel information transmitted from the control unit 590 (604), and the OFDM demodulator 570 OFDM demodulates the selected broadcast signal (605).

Subsequently, the decoding unit 580 decodes the OFDM demodulated signal and transmits the decoded signal to the control unit 590 (606). The control unit 590 reproduces the decoded broadcast through the LCD 540 so that the user can watch the broadcast. (607).

7 is a flowchart illustrating a method for automatically accessing a multimedia broadcast according to the present invention.

As shown in FIG. 7, first, a broadcasting station inserts a recognition code directly into broadcast content to transmit broadcast content, or transmits a recognition code separately from broadcast content through a data channel (701).

When the user watches a broadcast through another DMB terminal or a DMB receiver and the like, and views the broadcast with his terminal, the camera 530 of the terminal captures an identification code inserted in the broadcast screen (702).

The controller 590 of the terminal transmits the captured recognition code to the external server through the mobile communication RF unit 510 (703), and the external server compares the identification code transmitted from the terminal with the channel information stored in the internal database. The result is sent to the terminal (704). For example, if a recognition code identical to a recognition code used by a broadcasting station is stored in a database, and channel information is mapped to each stored recognition code, the external server compares the captured recognition code with the recognition code stored in the database to determine the same recognition code. Channel information can be read.

The control unit 590 of the terminal receives the comparison result (broadcast channel information) from the external server through the mobile communication RF unit 510, and transmits the broadcast channel information to the DMB RF unit 560 (705).

The DMB RF unit 560 selects a corresponding broadcast channel according to the broadcast channel information transmitted from the control unit 590 (706), and the OFDM demodulator 570 OFDM demodulates the broadcast signal of the selected broadcast channel (707). .

Subsequently, the decoding unit 580 decodes the OFDM demodulated signal and delivers the decoded signal to the control unit 590 (708). The control unit reproduces the decoded broadcast through the LCD 540 so that the user can watch the broadcast (709). ).

8 is a flowchart illustrating a method for selectively displaying multimedia broadcasting channel information in a terminal according to the present invention. Here, it is assumed that the user sets the identification code display release setting through the key input of the terminal.

As shown in FIG. 8, first, a broadcasting station transmits an identification code separately from a broadcasting signal through a data channel (801).

The broadcast signal with the recognition code inserted into the data channel is received through the DMB RF unit 560 and OFDM demodulated by the OFDM demodulator 570 (802).

The controller 590 controls the decoder 580 to decode only the broadcast signal from the received broadcast data (803), and the decoder 580 demodulates only the broadcast signal (804).

The controller 590 transmits the decoded broadcast signal to the LCD 540 to allow the user to watch only the broadcast without the identification code (805).

9 is another flowchart illustrating a method for selectively displaying multimedia broadcasting channel information in a terminal according to the present invention. Here, it is assumed that the user sets the identification code display release setting through the key input of the terminal.

As shown in FIG. 9, first, a broadcasting station transmits an identification code separately from a broadcasting signal through a data channel (901).

The broadcast signal with the recognition code inserted into the data channel is received through the DMB RF unit 560 and OFDM demodulated by the OFDM demodulator 570 (902).

The controller 590 controls the decoder 580 to simultaneously decode the recognition code and the broadcast signal (903), and the decoder 580 simultaneously decodes the OFDM demodulated recognition code and the broadcast signal (904).

The controller 590 discards the recognition code from the decoded recognition code and the broadcast signal and transmits only the broadcast signal to the LCD 540 so that the user can watch the broadcast without the recognition code (905).

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, by recognizing the recognition code sent by the broadcaster to the camera to simply connect to the desired broadcast channel, to eliminate the hassle of the user has to search for the program programming information by one to access the desired broadcast program It is effective. At this time, it is possible to selectively display the identification code sent by the broadcaster to enable smooth broadcast viewing.

Claims (12)

A communication terminal capable of automatically connecting multimedia broadcasting using a channel recognition code transmitted by a broadcasting station together with a broadcast signal, A camera for photographing an identification code inserted into a broadcast screen; A memory unit for storing broadcast channel information; A control unit which controls a communication terminal and reads broadcasting channel information corresponding to an identification code photographed by the camera from the memory unit and delivers the broadcasting channel information to a rear RF unit; And RF unit for selecting a corresponding broadcast signal according to the broadcast channel information transmitted from the controller Communication terminal comprising a. The method of claim 1, The control unit, And when the identification code is independently transmitted through a data channel, controlling the identification code not to be displayed according to a user's identification code display release input. The method of claim 1, In the memory unit, And a recognition code identical to a recognition code used by a broadcasting station, and broadcast channel information is mapped to each stored recognition code. The method according to any one of claims 1 to 3, The recognition code is, Communication terminal characterized in that any one of a logo, a barcode, a specific character. A communication terminal capable of automatically connecting multimedia broadcasting using a channel recognition code transmitted by a broadcasting station together with a broadcast signal, A camera for photographing an identification code inserted into a broadcast screen; RF unit for transmitting and receiving the RF signal; And The recognition code photographed by the camera is transmitted to the external server through the RF unit, the broadcast channel information corresponding to the recognition code is received from the external server through the RF unit, and the received broadcast channel information is transmitted to the RF unit. Control unit for controlling the RF unit to select the corresponding broadcast signal Communication terminal comprising a. The method of claim 5, The control unit, And when the identification code is independently transmitted through a data channel, controlling the identification code not to be displayed according to a user's identification code display release input. The method of claim 5, The external server, Include the database, And a recognition code identical to a recognition code used by a broadcasting station is stored in the database, and broadcasting channel information is mapped to each stored recognition code. The method according to any one of claims 5 to 7, The recognition code is, Communication terminal characterized in that any one of a logo, a barcode, a specific character. A multimedia broadcasting automatic access method in a multimedia broadcasting receiving terminal, A recognition code photographing step of photographing, by a camera, a recognition code inserted into a broadcast screen being played by another terminal; Channel information obtaining step of acquiring broadcast channel information corresponding to the captured recognition code; And A broadcast access step of selecting and accessing a corresponding broadcast signal based on the obtained broadcast channel information Multimedia broadcast automatic access method comprising a. The method of claim 9, The channel information obtaining step, The broadcasting channel information corresponding to the captured recognition code is read out from the internal memory, In the memory, And a recognition code identical to a recognition code used by a broadcasting station, and broadcast channel information is mapped to each stored recognition code. The method of claim 9, The channel information obtaining step, Transmitting the photographed identification code to an external server; And Receiving broadcast channel information corresponding to the identification code from an external server Multimedia broadcast automatic access method comprising a. The method of claim 10 or 11, The recognition code is, Method of automatically accessing multimedia broadcasting, characterized in that any one of a broadcaster logo, a barcode, a specific character.

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