KR100756019B1 - Digital multimedia broadcastingdmb receiving apparatus and method for outputting dmb signal through a common broadcasting signal outputting apparatus - Google Patents

Abstract

The present invention provides a digital multimedia broadcasting receiving apparatus and method for outputting a digital multimedia broadcasting signal to a general broadcasting signal output apparatus. To this end, in the present invention, a conventional mobile terminal and a conventional DMB receiver detachable from the conventional broadcast signal output device can receive the digital multimedia broadcasting signal and output the digital multimedia broadcast signal to the conventional mobile terminal and the conventional broadcast signal output device. do. The DMB receiving apparatus converts the digital multimedia broadcasting signal into a form that can be reproduced by the conventional mobile terminal, and buffers the digital multimedia broadcasting signal according to a delay time required for converting the broadcasting signal. Digital multimedia broadcasting output through the mobile terminal and the broadcast signal output device is synchronized with each other. In addition, broadcast program information for each channel such as information data and EPG data included in the digital multimedia broadcasting signal may be output from the mobile terminal or the broadcast signal output device according to a user's selection.

DMB, DMB receiver, mobile terminal

Description

DIGITAL MULTIMEDIA BROADCASTING (DMB) RECEIVING APPARATUS AND METHOD FOR OUTPUTTING DMB SIGNAL THROUGH A COMMON BROADCASTING SIGNAL OUTPUTTING APPARATUS}

1 is an exemplary diagram in which a DMB receiving apparatus and a mobile terminal are connected to a broadcasting signal output apparatus according to an embodiment of the present invention;

2 is a block diagram of a DMB receiving apparatus according to an embodiment of the present invention;

3 is a block diagram of a mobile terminal that is matched with a DMB receiving apparatus according to an embodiment of the present invention;

4 is a flowchart illustrating a process of outputting a DMB signal through a broadcast signal output apparatus using a DMB receiving apparatus and a mobile terminal according to an embodiment of the present invention;

5 is a detailed flowchart illustrating an operation step of outputting a DMB signal by a DMB receiving apparatus according to an embodiment of the present invention in FIG. 4;

6 is an exemplary diagram in which a DMB receiving apparatus is connected to a broadcast signal output apparatus according to another embodiment of the present invention;

7 is a block diagram of a DMB receiving apparatus according to another embodiment of the present invention.

The present invention relates to digital multimedia broadcasting (DMB), and more particularly, to an apparatus and method for receiving and reproducing digital multimedia broadcasting signals.

In general, a mobile terminal includes a mobile communication terminal such as a mobile phone or a personal digital assistant (PDA). The manufacturing technology of such a mobile terminal is developing day by day, and also has a function of storing an image or a video using an embedded camera. Some of these mobile terminals also have a TV output function that directly connects to a broadcast signal output device such as a TV and outputs the image or video through the broadcast signal output device.

In recent years, with increasing interest in digital multimedia broadcasting, devices such as a mobile terminal or a digital multimedia broadcasting TV capable of watching the digital multimedia broadcasting have also emerged. Here, digital multimedia broadcasting refers to a broadcasting service that provides a user with high quality, high sound quality, and higher service in place of a conventional analog broadcasting.

However, in order to receive and reproduce such a digital multimedia broadcasting signal, a receiving apparatus for receiving the digital multimedia broadcasting signal and a device for decoding the received digital multimedia broadcasting signal are required. As a result, the general multimedia TV cannot watch the digital multimedia broadcasting.

Accordingly, if the DMB dedicated terminal has a TV output function as described above, the user may connect the DMB dedicated terminal to a TV to output the digital multimedia broadcasting to the broadcast signal output device. However, in this case, the user has to re-purchase the DMB dedicated terminal separately, regardless of whether the user has a conventional mobile terminal in order to watch digital multimedia broadcasting on the TV. Also, in this case, if there is no function for reproducing the data of the digital multimedia broadcasting on the TV, the data of the digital multimedia broadcasting cannot be reproduced on the TV.

Furthermore, since the DMB dedicated terminal does not have a function of outputting a video signal as an S-VHS (Super-VHS) signal, it is possible to input the video signal to a TV only through a general composite terminal. However, when the composite terminal is used, since the color signal and the luminance signal of the video signal are mixed with each other, there is a problem that the image quality is greatly reduced.

In addition, if the digital multimedia broadcasting signal is output to the general broadcasting signal output device through the DMB dedicated terminal as described above, the digital multimedia broadcasting signal is not normally output to the DMB dedicated terminal. However, the general broadcast signal output device has a function of outputting a video signal and an audio signal, but is broadcast per channel such as information data and EPG (Electronic Program Guide) data included in the digital multimedia broadcast signal, such as a DMB dedicated terminal. Since the user does not have a function of outputting program information, there is a problem in that the user cannot receive the information data and the broadcast program information for each channel.

An object of the present invention for solving the above problems is to provide an apparatus and method for allowing a user to output digital multimedia broadcasting through a general broadcast signal output apparatus without the separate DMB dedicated terminal.

Another object of the present invention is to provide an apparatus and a method for allowing a user to watch digital multimedia broadcasting and to check broadcast program information for each channel through a general broadcast signal output apparatus using a conventional mobile terminal.

The DMB receiving apparatus of the present invention for achieving the above object is a DMB signal receiving unit for receiving a DMB signal corresponding to a channel according to the key input, if there is a key input for channel selection from the mobile terminal, and the received DMB signal copying unit for copying the DMB signal to generate at least two DMB signals, and DMB signal analysis unit for extracting multimedia data, information data, control data and broadcast program information for each channel from the generated DMB signals And a DMB signal conversion unit for converting the first multimedia data extracted from one of the DMB signals generated by the DMB signal copying unit into a data format reproducible by the mobile terminal, and transmitting data to the mobile terminal. A first connector for transmitting and receiving and a second connector for transmitting data to the broadcast signal output device Compared with the interface unit, and converts the first multimedia data into a data format that can be reproduced by the mobile terminal, and outputs to the mobile terminal through the first connection unit, extracted from the other one of the DMB signal DMB signal And a controller configured to output second multimedia data to the broadcast signal output device through the second connection unit.

In addition, the mobile terminal of the present invention, a terminal connection unit for receiving multimedia data from the DMB receiving apparatus, a key input unit for receiving a key input for selecting the program information for each channel or outputting the information data and the channel selection from the user; When information data or broadcast program information for each channel is received from the DMB receiver, image information for displaying the information data or broadcast program for each channel is generated, and the signal that the DMB receiver can recognize the input key signal. And a memory unit for storing interface software for converting the data into a signal recognizable by the DMB receiving apparatus and converting the key input of the user into a signal recognizable by the DMB receiving apparatus. Reproduces and outputs the same, and the DMB receiving apparatus When the information from the data channel or the broadcast program information is received to generate the image information for the information data and broadcasting program channel and a controller for outputting it to the display unit.

In addition, the method for outputting the DMB signal by the DMB receiving apparatus of the present invention includes a key input step of receiving a key signal for channel selection from the mobile terminal, and a DMB signal receiving a DMB signal of a channel corresponding to the input key signal. A reception step, a DMB signal generation step of copying the received DMB signal into at least two DMB signals, a multimedia data extraction step of extracting multimedia data from each of the generated DMB signals, and the generated DMB signal A data conversion step of converting the first multimedia data extracted from any one of the DMB signals into a multimedia data format reproducible by the mobile terminal, outputting the first multimedia data converted from the data format to the mobile terminal, A second multi extracted from the other one of the generated DMB signals; And outputting the DMB signal to the media signal output device.

In addition, another DMB receiving apparatus of the present invention for achieving the above object is a key input unit for receiving a key for channel selection from a user, and for displaying the channel information corresponding to the key input to the broadcast signal output device If there is a memory unit including an on-screen display (OSD) data storage unit for storing OSD (On Screen Display) data, a power unit for receiving power for operation of the DMB receiving apparatus, and a key input for selecting the channel, A DMB signal receiving unit for receiving a DMB signal corresponding to a channel, and analyzing the received DMB signal to extract multimedia data including video / audio data, information data and control data, and broadcast program information for each channel from the DMB signal; DMB signal analysis unit and an interface unit for outputting data to the broadcast signal output device And the DMB signal receiving unit to receive the DMB signal of the channel according to the user's key input, the DMB signal analyzing unit to extract the multimedia data from the received DMB signal, and the OSD corresponding to the channel selected by the user. A controller configured to load data from the OSD storage unit, synthesize the loaded OSD data and the extracted multimedia data, and transmit the synthesized multimedia data to the broadcast signal output device through the interface unit; It includes.

In addition, another method for outputting the DMB signal by the other DMB receiving apparatus of the present invention for achieving the above object, the key input step of receiving a key for channel selection from the user, and the selected key if there is a key input for the channel selection OSD loading step of loading OSD (On screen Display) data corresponding to the channel, setting the channel according to the key input, receiving the DMB signal for receiving the DMB signal of the set channel, the received Extracting multimedia data including video / audio data from a DMB signal; synthesizing the loaded OSD data with the extracted multimedia data; and synthesizing the multimedia data synthesized with the OSD data. And an output step of outputting the broadcast signal output device.

In addition, the apparatus for receiving digital multimedia broadcast signals according to an embodiment of the present invention may include a first connection unit that may be connected to a mobile terminal for playing multimedia data, a broadcast signal output device for reproducing an input broadcast signal, and a second that may be connected. And a control unit for receiving the digital multimedia broadcasting signal and outputting the digital multimedia broadcasting signal to the connected mobile terminal and the connected broadcasting signal output device.

The digital multimedia broadcasting signal output method of the apparatus for receiving a digital multimedia broadcasting signal according to an embodiment of the present invention includes a receiving step of receiving the digital multimedia broadcasting signal and a mobile terminal capable of reproducing the multimedia data from the received broadcasting signal. And a broadcast signal output step of outputting the broadcast signal to a broadcast signal output apparatus capable of reproducing the broadcast signal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are denoted by the same reference numerals wherever possible. In the following description and the annexed drawings, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

First of all, in order to provide a thorough understanding of the present invention, the basic principles of the present invention will be described. The DMB receiving apparatus according to the embodiment of the present invention can be detached from a conventional mobile terminal and a conventional broadcast signal output apparatus, and the digital multimedia broadcasting. Receive the signal. The copy is generated as two broadcast signals. One of them is converted into a form that can be reproduced by the mobile terminal and output to the conventional mobile terminal, and the other is output to the broadcast signal output apparatus through the S-VHS terminal.

The DMB receiving apparatus buffers the digital multimedia broadcasting signal according to a delay time required for converting the broadcasting signal and synchronizes the digital multimedia broadcasting output through the mobile terminal and the broadcasting signal output device with each other. To be done. In addition, broadcast program information for each channel such as information data and EPG data included in the digital multimedia broadcasting signal may be output from the mobile terminal or the broadcast signal output device according to a user's selection.

1 is a diagram illustrating an example in which a DMB receiving apparatus and a mobile terminal are connected to a broadcast signal output apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 1, first, FIG. 1A illustrates a broadcast signal output apparatus of a DMB receiving apparatus 100 according to an embodiment of the present invention connected to a conventional mobile terminal 102 through a connector 104. The figure shows an example connected with 106. 1 (b) is a view showing in detail the connector 104 and the DMB receiving apparatus according to an embodiment of the present invention.

Referring to this, the conventional broadcast signal output device 106 is provided with an S-VHS terminal, and the connector 104 is a video connection port that is matched with the S-VHS terminal of the broadcast signal output device 106. 110, an audio connection port 108. And the mobile terminal 102 is matched with the DMB receiving apparatus 100 according to an embodiment of the present invention through a 10-pole interface provided on the side. Here, the S-VHS terminal is a terminal having an S (Separate) terminal for separating and inputting a luminance signal and a color signal, thereby preventing unnecessary interference between the luminance signal and the color signal. Accordingly, it is possible to reproduce a video signal having a much higher image quality than the composite terminal method in which a signal mixed with a luminance signal and a color signal is input. The connector 104 includes at least one port that matches the S-VHS terminal and an audio terminal, and an interface that matches the DMB signal receiving apparatus 100 according to an embodiment of the present invention.

Then, the DMB receiving apparatus 100 according to the embodiment of the present invention receives the digital multimedia broadcasting signal and copies the received digital multimedia broadcasting signal into two digital multimedia broadcasting signals. One of them is parsed to extract video data and audio data and output them to the mobile terminal 102. Parsing video data and audio data included in another one, extracting video data and audio data, and broadcasting the video data through the S-VHS terminal and the audio data through the audio terminal through the connector 104. Output to the signal output device 106. Then, video data and audio data of the same digital multimedia broadcasting signal are input to the mobile terminal 102 and the broadcast signal output device 106. Accordingly, when using the DMB receiving apparatus 100 according to an exemplary embodiment of the present invention, the same video data and audio data may be reproduced in the mobile terminal 102 and the broadcast signal output apparatus 108.

However, the conventional mobile terminal 102 may not be able to reproduce video data and audio data used for digital multimedia broadcasting. For example, the video data of the digital multimedia broadcasting signal is MPEG-4 AVC (Advanced Video Coding, H.264 / MPEG-4 part 10) data format (hereinafter referred to as H.264 data format) according to the satellite DMB standard. Have When the mobile terminal 102 cannot reproduce the H.264 video data, the DMB receiving apparatus 100 may convert the video data according to the H.264 data format. Convert to any video data format. As an example of video data format that the mobile terminal 102 can convert, video data of MPEG-4 format will be taken as an example.

Then, the mobile terminal 102 can play the received video data of the MPEG-4 format. The same is true for the audio data. If the mobile terminal 102 cannot play MPEG-2 AAC + (Spectral Band Replication) data format (hereinafter, referred to as AAC + data format), which is generally used as an audio data format of digital multimedia broadcasting. The DMB receiving apparatus 100 converts the audio data of the received digital multimedia broadcasting into an audio data format that the mobile terminal 102 can reproduce.

However, in this case, if the data conversion process is converted from the data of the H.264 format to Mpeg 4 format, it takes time. In this case, when the delay time due to the conversion occurs, the digital multimedia broadcasting reproduced by the broadcast signal output device 106 and the mobile terminal 102 may be out of synchronization with each other. Accordingly, in order to prevent this, the DMB receiving apparatus 100 according to the embodiment of the present invention buffers the digital multimedia broadcasting signal outputted to the broadcasting signal output apparatus 106 during the delay time and the mobile terminal 102. The digital multimedia broadcasting signals outputted to the broadcasting signal output device 106 may be synchronized with each other. However, if the mobile terminal 102 does not need the conversion, that is, if the digital multimedia broadcasting signal can be reproduced without conversion, the conversion and the buffering process may be omitted.

2 is a block diagram of the DMB receiving apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the DMB receiving apparatus 100 according to an embodiment of the present invention may include a memory unit 202, a DMB signal analyzer 206, a DMB signal converter 212, an interface unit 216, The control data parsing unit 208, the channel setting unit 214, the data carousel 222, and the DMB signal copying unit 210 are connected to the control unit 200.

The DMB signal receiver 204 includes an antenna, an RF unit, and a baseband processor for receiving a digital multimedia broadcasting signal. In addition, the channel setting unit 214 receives the digital multimedia broadcasting signal according to the channel set. The digital multimedia broadcasting signal is output to the DMB signal copying unit 210.

The DMB signal copying unit 210 copies the received digital multimedia broadcasting signal into two digital multimedia broadcasting signals under the control of the control unit 200. The two digital multimedia broadcasting signals are input to the DMB signal analyzer 206.

The DMB signal analyzer 206 analyzes the digital multimedia broadcasting signal received from the DMB signal receiver 204 to extract video data, audio data and information data, control data, and broadcast program information for each channel. Each extracted data is applied to the controller 200.

The controller 200 of the DMB receiving apparatus 100 according to an embodiment of the present invention checks whether the mobile terminal 102 needs to convert the video data and the audio data. When the mobile terminal 102 cannot directly reproduce the video data and the audio data, the mobile terminal 102 applies the video data and the audio data included in any one of the two digital multimedia broadcasting signals to the DMB signal converter 212. To convert the data to a data format that can be reproduced by the mobile terminal 102. The converted video data and the audio data are output to the interface unit 216 to be output through the connection unit connected to the mobile terminal 102.

The controller 200 buffers the video data and the audio data included in the other of the two digital multimedia broadcasting signals through the buffering unit 230 of the interface unit 216 by the delay time required for the conversion. The broadcast signal output device 106 is then output.

If the user wants to output the information data, the controller 200 applies the information data extracted from the DMB signal analyzer 206 to the data carousel 222. In addition, the user selects the information data selected by the user through the data carousel 222 to the mobile terminal 102 through the interface unit 216. The information data can be output as image information through the mobile terminal 102. Accordingly, the mobile terminal 102 may reproduce the video and audio data of the digital multimedia broadcasting or output the information data as image information.

However, if control data is extracted from the DMB signal analyzer 206, the controller 200 outputs the control data to the control data parser 208. The control data parsing unit 208 is controlled to parse the control data. The parsed control data 208 is used to generate channel configuration information of the digital multimedia broadcasting and apply it to the channel setting unit 214. Here, the channel configuration information refers to information on which CDM channel is allocated to which broadcast channel, such as CDM (Code Division Multiplex) channel information of satellite digital multimedia broadcasting.

However, if the channel-specific broadcast program information of the digital multimedia broadcasting is input from the DMB signal analyzer 206, the controller 200 outputs the input channel-specific broadcast program information to the mobile terminal 102. The mobile terminal 102 then checks whether the user has input a key for EPG output. If the user inputs a key for EPG output, the broadcast program information for each channel is parsed. The mobile terminal 102 may use specific software for parsing the broadcast program information for each channel. The mobile terminal 102 outputs the parsed channel program information as image information. Accordingly, the mobile terminal 102 may provide the user with information about a broadcast program for each channel of the digital multimedia broadcasting signal as image information.

The control data parsing unit 208 includes control data including PSI (Program Specification Information) such as a Service Description Table (SDT), a Program Association Table (PAT), a Program Map Table (PMT), and the like, from the control unit 200. Parse it if it is entered. Then, the controller 200 applies the parsed control data to the channel setting unit 214 as channel configuration information.

Then, the channel setting unit 214 checks the configuration of the digital multimedia broadcasting channels using the channel configuration information applied from the control data parsing unit 208. When there is a key input for selecting a channel from the user, the channel according to the key input by the user is set in the DMB signal receiving unit 204 under the control of the controller 200.

The memory unit 202 of the DMB receiving apparatus connected to the controller 200 includes an OSD data storage unit for storing OSD (On Screen Display) data. Here, the OSD data refers to data synthesized with video data currently output to display channel information of the selected channel on the broadcast signal output device 106 when a user selects a specific digital multimedia broadcasting channel. Accordingly, when the user selects a specific channel, the DMB receiving apparatus 100 according to an embodiment of the present invention loads the OSD data corresponding to the selected channel and outputs the video data including the OSD data to the broadcast signal output apparatus. (106). Then, the broadcast signal output device 106 may receive the video data including the OSD data and display the channel information of the digital multimedia broadcasting currently selected by the user to the user.

The memory unit 202 according to the embodiment of the present invention includes a read only memory (ROM), a flash memory, a random access memory (RAM), and the like. The ROM stores a program for processing and controlling the controller 200 and various reference data. The RAM provides a working memory of the controller 200, and the flash memory provides an area for storing various updatable data for storage.

The DMB signal converter 212 connected to the controller 200 may transmit one or both of video data and audio data of a digital multimedia broadcasting signal received under the control of the controller 200 to the mobile terminal 102. Convert it to a data format that can be played and output. To this end, the DMB signal converter 212 includes at least one of a video data converter 218 and an audio data converter 220.

The interface unit 216 is connected to the control unit 200, and serves as an interface between the control unit 200, the mobile terminal 102, and the broadcast signal output device 106. The controller 200 outputs video data and audio data extracted from one of the two digital multimedia broadcasting signals through the first connection unit 226 connected to the mobile terminal 102. In this case, the video data and the audio data output through the first connector 226 may be converted into a format that the mobile terminal 102 can reproduce.

The interface unit 216 includes an S-VHS signal converter 232 for converting the other digital multimedia broadcasting data into an S-VHS signal and outputting the S-VHS signal to the broadcast signal output device 106. A second connector 228 for outputting the S-VHS signal to a broadcast signal output device is provided. When the mobile terminal 102 needs to convert the video data and the audio data, buffering may buffer the video data and the audio data output through the second connection unit 228 by a delay time required for the conversion. A portion 230 may be further provided.

However, if the broadcast signal output device 106 according to the embodiment of the present invention has a function of directly reproducing a digital multimedia broadcast signal, the S-VHS signal converter 232 may not be necessary. to be. That is, when the broadcast signal output device can reproduce the H.264 format video data used in the satellite digital multimedia broadcast during the digital multimedia broadcast, and can directly output it to the broadcast signal output device 106, Of course, the interface unit 216 may not require the S-VHS signal converter 232.

3 is a block diagram of a mobile terminal that is matched with the DMB receiving apparatus 100 according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the mobile terminal 102 that is matched with the DMB receiving apparatus 100 according to an embodiment of the present invention includes a terminal memory unit 302, a key input unit 304, a display unit 306, and a baseband processor. A code 310 (Codec-Decoder) 312, and a terminal connector 316 are connected to the terminal controller 300. In this case, the terminal controller 300 processes voice signals and data according to protocols for a telephone call, data communication, and wireless Internet access, and controls each part of the mobile communication terminal. Then, the user's key input is received from the key input unit 304 to control the display unit 306 accordingly to generate and provide image information according to the user's key input.

And when the DMB receiving apparatus 100 according to the embodiment of the present invention is connected through the terminal connection unit 316, the video data format and audio data format that can be reproduced by the request of the DMB receiving apparatus 100 Information is provided to the DMB receiving apparatus 100. When the video data and the audio data are received from the DMB receiving apparatus 100, the video data and the audio data are reproduced through the amplifier 314 and the display 306.

If there is a key input from the user, the input key signal is input to the DMB receiving apparatus 100. When the key signal is output of broadcast program information for each channel, the broadcast program information for each channel input from the DMB receiving apparatus 100 is parsed and outputted. If the key signal is information data, the key signal is input from the DMB receiving apparatus 100. Parse the information data and output it.

In addition, the terminal memory unit 302 connected to the terminal control unit 300, the mobile terminal 102 is compatible with the DMB receiving apparatus 100, the mobile terminal 102 and the DMB receiving apparatus 100. May have an area for storing software for interfacing with each other. Hereinafter, such software will be referred to as interface software, and the area of the terminal memory unit 302 in which the interface software is stored will be referred to as interface software storage unit 318.

The interface software converts the user's key input signal into a signal that can be recognized by the DMB receiving apparatus 100, and receives the broadcasting program information or the information data for each channel from the DMB receiving apparatus 100. Parse it. The interface software may download the DMB receiving device software from a wireless network or from equipment such as a personal computer (PC).

The terminal memory unit 302 is composed of a read only memory (ROM), a flash memory, a random access memory (RAM), and the like. The ROM stores a program for processing and controlling the terminal controller 300 and various reference data. The RAM provides a working memory of the terminal controller 300, and the flash memory provides an area for storing various updatable data for storage.

In addition, the key input unit 304 includes various keys including numeric keys as described above, and provides the terminal controller 300 with a key input input from a user. The display unit 306 outputs data applied under the control of the terminal controller 300 as image information, and outputs video data input from the DMB receiving apparatus 100 under the control of the terminal controller 300. Output

The RF unit 308 transmits and receives an RF signal with the base station. In addition, the received signal is converted into an intermediate frequency (IF) signal and output to the baseband processor 310 connected to the terminal controller 300, and the IF signal input from the baseband processor 310 is converted into an RF signal. Send it. The baseband processor 310 is a baseband analog ASIC (BBA) that provides an interface between the terminal controller 300 and the RF unit 308. The baseband processor 310 receives an analog IF signal from a baseband digital signal applied from the terminal controller 300. The signal is converted into a signal and applied to the RF unit 308, and the analog IF signal applied from the RF unit 308 is converted into a digital signal of the baseband and applied to the terminal control unit 300. In addition, the codec 312 connected to the terminal controller 300 is connected to the microphone and the speaker through the amplifier 314, and encodes the audio signal input from the microphone to PCM (Pulse Code Modulation) encoding for the audio data. Output to 300. The audio data input from the terminal controller 300 is PCM decoded and output to the speaker through the amplifier 314. The amplifier 314 amplifies the audio signal input from the microphone or the audio signal output from the speaker, and adjusts the volume of the speaker and the gain of the microphone according to the control of the terminal controller 300.

4 is a flowchart illustrating a process of outputting a DMB signal through a broadcast signal output apparatus using a DMB receiving apparatus and a mobile terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 4, when the DMB receiving apparatus 100 according to the embodiment of the present invention is connected to the mobile terminal 102, the terminal control unit 300 of the mobile terminal 102 proceeds to step 400. Checks if there is a key input for channel selection. If there is a key input for the channel selection in step 400, the terminal controller 300 proceeds to step 402 and transmits the input key signal to the DMB receiving apparatus 100. In step 404, the control unit 200 of the DMB receiving apparatus 100 selects a channel according to a key input of the user. In operation 406, the controller 200 receives a digital multimedia broadcasting signal of the selected channel.

In operation 408, the controller 200 copies the received digital multimedia broadcasting signal to generate two digital multimedia broadcasting signals. In operation 410, the controller 200 extracts video data and audio data from each of the copied digital multimedia broadcasting signals. The controller 200 proceeds to step 412 and checks the format of the video data and the audio data that can be reproduced by the mobile terminal 102. In step 414, it is determined whether the conversion of video data and audio data extracted from the digital multimedia broadcasting signal is necessary.

When the conversion of the video data and the audio data is necessary, the controller 200 proceeds to step 416 and the mobile terminal 102 plays the video data and the audio data extracted from one of the two digital multimedia broadcasting signals. Convert to any data format possible. In operation 418, the controller 200 outputs the converted video / audio data to the first connection unit 226 connected to the mobile terminal 102, and is extracted from another one of the two digital multimedia broadcasting signals. The video data is converted into an S-VHS signal and output to the second connection unit 228 connected to the broadcast signal output device 106 together with the extracted audio data. Then, the converted video / audio data is transmitted to the mobile terminal 102 in step 420, and the video / audio data converted to the S-VHS signal is transmitted to the broadcast signal output device 106 in step 422.

Here, in step 418, video / audio transmitted to the broadcast signal output device 106 in step 422 to synchronize the video data and the audio data output to the broadcast signal output device 106 and the mobile terminal 102 with each other. Audio data may also be buffered. In this case, a detailed process of step 418 of buffering the video / audio data will be described with reference to FIG. 5.

On the other hand, if it is determined that the conversion of the data format is not necessary in step 414, the controller 200 connects the video / audio data extracted from one of the two digital multimedia broadcast signals to the mobile terminal 102. It outputs to the first connector 226, and outputs the video / audio data output from the other to the second connector 228 connected to the broadcast signal output device 106. In such a case, since there is no delay in the data format conversion, no delay occurs, and thus no buffering operation is performed.

The mobile terminal 102 and the broadcast signal output device 106 that receive the video / audio data in steps 420 and 422 respectively output the same. Although not shown, when the user wants to confirm the information data or the broadcast program information for each channel, the mobile terminal 102 transmits the information data or the broadcast program information for each channel according to a key input of the user. The reception apparatus 100 makes a request. Then, the control unit 200 transmits the information data or channel-specific broadcast program information according to the request to the mobile terminal 102. The mobile terminal 102 then parses the information data and the broadcast program information for each channel through pre-stored interface software and outputs the image data to the display unit 306 as image information.

Accordingly, when the user connects the DMB receiving apparatus according to an exemplary embodiment of the present invention to the broadcast signal output device 106 and the mobile terminal 102, the user may digitally connect the mobile terminal 102 and the broadcast signal output device 106. You can watch multimedia broadcasting. In addition, a desired channel is selected by using the key input unit 304 of the mobile terminal 102, and information data and channel-specific broadcasting program included in the digital multimedia broadcasting signal using the display unit 306 of the mobile terminal 102. You can check the information.

FIG. 5 is a detailed flowchart illustrating an operation step of outputting a DMB signal by the DMB receiving apparatus according to the embodiment of the present invention in FIG. 4.

Referring to FIG. 5, when the mobile terminal 102 converts the data into a playable data format in step 416, the control unit 200 proceeds to step 500 and thus the time required for the data format conversion, that is, delay. Check the time. In step 502, the controller 200 buffers the video / audio data output through the second connection unit 228 connected to the broadcast signal output device 106 according to the delay time. In operation 504, the controller 200 outputs the buffered video / audio data and the video / audio data to be transmitted to the mobile terminal 102, respectively. The unbuffered video / audio data is transmitted to the mobile terminal 102 in step 420, and the buffered video / audio data is transmitted to the broadcast signal output device 106 in step 422. Therefore, in the DMB receiving apparatus 100 according to an embodiment of the present invention, the video / audio data played back in the mobile terminal 102 and the video / audio data played back from the broadcast signal output device 106 due to the delay time. This can prevent the synchronization mismatch.

However, if the DMB receiving apparatus according to the embodiment of the present invention has its own power source such as a battery and also has a key input unit for selecting a predetermined channel, the broadcast signal is not connected to the mobile terminal 102. The digital multimedia broadcasting signal may be reproduced through the output device 106. Hereinafter, the DMB receiving apparatus includes a key input unit and its own power source for selecting the predetermined channel, according to another embodiment of the present invention.

6 is a diagram illustrating an example in which a DMB receiving apparatus is connected to a broadcast signal output apparatus according to another embodiment of the present invention.

First, FIG. 6A illustrates an example in which a DMB broadcast receiving device according to another embodiment of the present invention is connected to the broadcast signal output device 106 without the mobile terminal 102. b) is a diagram illustrating the predetermined key input unit provided in the DMB broadcasting receiving apparatus according to another embodiment of the present invention.

First, referring to FIG. 6 (a), the DMB receiving apparatus 600 according to another embodiment of the present invention may self-power the key input unit 650 and the self power as shown in FIG. 6 (b). It is possible to receive and transmit digital multimedia broadcast signals without the mobile terminal 102. In FIG. 6B, the left arrow key 652 is a key for decreasing the channel number when the user selects a channel, and the right arrow key 654 is a key for increasing the channel number when the user selects a channel. In addition, the stop key 656 may be used to stop the channel number which is continuously increased when the user keeps inputting any one of the arrow keys 652 and 654, and also provided by the DMB receiving apparatus 600. It can be used to display the menu screen.

When the user inputs the left arrow key 652 or the right arrow key 654, the DMB receiving apparatus 600 according to another embodiment of the present invention stores OSD data according to the key input signal. Loaded from the unit 224, synthesized with the video data output to the broadcast signal output device 106 and outputs it. Then, the broadcast signal output device 106 receives the video data and displays information of a currently set broadcast channel, that is, information such as a channel number. Accordingly, the user can check the information on the channel currently selected by the user.

7 is a block diagram of a DMB receiving apparatus according to another embodiment of the present invention.

Referring to FIG. 7, the DMB receiving apparatus 600 according to another exemplary embodiment of the present invention is different from the key input unit 702, the power supply unit 704, and the broadcast signal output device 106. An interface unit 706 for connecting with the connector 104 having a terminal connected to the S-VHS terminal of the.

Here, the power supply unit 704 supplies operating power for operating the DMB receiving apparatus according to another embodiment of the present invention. The power supply unit 704 may be a battery.

The controller 700 controls the channel setting unit 214 according to the key input signal input from the key input unit 702 to set the channel selected by the user. The OSD data according to the key input signal input by the user is synthesized with the video data input to the broadcast signal output device 106 and output to the broadcast signal output device 106.

When the digital multimedia broadcasting signal according to the channel selected by the user is received, the DMB signal analyzer 206 converts the received digital multimedia broadcasting signal into video data, audio data, control data, and broadcast program information for each channel. Interpret The interpreted data is input to the controller 700.

Then, the control unit 700 applies the channel-specific broadcast program information and control data to the control data parsing unit 208, and the video data and audio data are broadcast through the connector 104 connected to the interface unit 706. Input to the signal output device 106. If the broadcast signal output device 106 has a function of reproducing the video data and the audio data, the controller 700 directly transfers the video data and the audio data to the broadcast signal output device 106. Output However, if the broadcast signal output device 106 cannot reproduce the video data and the audio data, the digital broadcast reception device 600 according to another embodiment of the present invention outputs the video data and audio data to the broadcast signal. The device 106 may convert the file into a form that can be reproduced and output the same. In this case, the digital multimedia broadcasting receiver 600 according to another embodiment of the present invention further includes a signal converter 708 for converting the video data and the audio data into a format reproducible by the broadcast signal output device 106. The information necessary for the format conversion of the data may be downloaded from a personal computer (PC) of the user, or may be stored in advance in the memory unit 702. In addition, the role of the video / audio signal converter 708 according to another embodiment of the present invention may be performed by the DMB signal converter 212 according to the embodiment of the present invention instead.

Then, the video data is converted into an S-VHS signal by the S-VHS signal converter 232 included in the interface unit 706 of the digital multimedia broadcasting receiver 700 according to another embodiment of the present invention. It is input to the S-VHS terminal of the broadcast signal output device through the connector 104 connected to the interface unit 706. The audio data is output to the broadcast signal output device 106 through the interface unit 706. The broadcast signal output device 106 then reproduces the input video data and audio data. Accordingly, if only the predetermined key input unit 702 and the power supply unit 704 are further provided in the DMB receiving apparatus 100 according to the embodiment of the present invention, the DMB receiving apparatus 600 may be digital multimedia without the mobile terminal 102. The broadcast signal can be played back as much as possible through the broadcast signal output device 106.

Although not mentioned in FIG. 7, the digital multimedia broadcasting receiver 600 according to another embodiment of the present invention may also be connected to the mobile terminal 102. If this is the case, the digital multimedia broadcasting receiver 600 according to another embodiment of the present invention detects the connection with the mobile terminal 102 and receives power from the power unit 704 according to whether the mobile terminal 102 detects the connection or the mobile terminal ( 102 may select whether to receive power. That is, the digital multimedia broadcasting receiver 600 according to another embodiment of the present invention receives the power of the power supply unit 704 by receiving the power of the mobile terminal 102 as the operating power when connected to the mobile terminal 102. You can save.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Particularly, in the embodiment of the present invention, the DMB receiving device 100 is connected to the 10-pole interface of the mobile terminal 102 as an example, but the DMB receiving device 100 is a 24-pole of the mobile terminal 102. Of course, it can also be connected to the interface. In addition, although the mobile phone is taken as an example of the mobile terminal 102 in the embodiment of the present invention, the scope of the present invention is not limited thereto. Therefore, the scope of the invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

Accordingly, the present invention allows a user to output a digital multimedia broadcast through a general broadcast signal output apparatus without the separate DMB dedicated terminal, and a user through the general broadcast signal output apparatus using the conventional mobile terminal. The user can watch the video / audio / information data of the digital multimedia broadcasting and check the broadcasting program information for each channel of the digital multimedia broadcasting.

Claims (32)

A mobile terminal capable of reproducing multimedia data and a broadcast signal output device capable of receiving a broadcast signal and reproducing the received broadcast signal, the DMB receiving apparatus receiving a digital multimedia broadcasting signal (DMB), A DMB signal receiving unit receiving a DMB signal corresponding to a channel according to the key input when there is a key input for channel selection from the mobile terminal; A DMB signal copying unit for copying the received DMB signal to generate at least two DMB signals; A DMB signal analyzer for extracting multimedia data, information data, control data, and broadcast program information for each channel from the generated DMB signals; A DMB signal conversion unit for converting the first multimedia data extracted from one of the DMB signals generated by the DMB signal copying unit into a data format reproducible by the mobile terminal; An interface unit including a first connection unit for transmitting and receiving data to the mobile terminal and a second connection unit for transmitting data to the broadcast signal output device; Converting the first multimedia data into a data format reproducible by the mobile terminal, outputting the first multimedia data to the mobile terminal through the first connection unit, and outputting the second multimedia data extracted from the other one of the DMB signals; And a control unit for outputting the broadcast signal output device through a second connection unit. The method of claim 1, And a memory unit storing OSD (On Screen Display) data for displaying channel information corresponding to the key input to the broadcast signal output device. Claim 3 was abandoned when the setup registration fee was paid. The method of claim 2, wherein the control unit, When the key for selecting the channel is input, the OSD data including the channel information corresponding to the key input is loaded, and the synthesized output is synthesized on the multimedia data output to the broadcast signal output device. DMB receiving device. The method of claim 1, wherein the control unit, When a key for outputting broadcasting program information or information data for each channel is input from the mobile terminal, the broadcasting program information or information data for each channel included in the DMB signal is extracted, and the extracted data is output to the first connection unit. DMB receiving apparatus, characterized in that. Claim 5 was abandoned upon payment of a set-up fee. The method of claim 1, wherein the interface unit, And a buffering unit configured to buffer the second multimedia data for a predetermined time. Claim 6 was abandoned when the registration fee was paid. The method of claim 5, wherein the control unit, The delay time required to convert the first multimedia data into a playable data format is checked, and the buffering unit is controlled so that the second multimedia data outputted to the second connection unit is buffered by the delay time. DMB receiving apparatus, characterized in that. According to claim 1, The broadcast signal output device, DMB receiving apparatus characterized in that the TV (Television) having a S-VHS (Super VHS) terminal and an audio input terminal for receiving the second multimedia data from the outside. Claim 8 was abandoned when the registration fee was paid. The method of claim 7, wherein the second connecting portion, And transmitting the second multimedia data to the broadcast signal output apparatus through a connector having ports matching with the S-VHS terminal and the audio terminal and an interface unit matching with the second connection unit. Receiving device. According to claim 1, The broadcast signal output device, And a function for reproducing video data input from the DMB receiving apparatus to the S-VHS terminal. A mobile terminal connected to a digital multimedia broadcasting (DMB) receiver connected to a broadcast signal output device capable of receiving a broadcast signal and reproducing the received broadcast signal. A terminal connection unit for receiving multimedia data from the DMB receiving apparatus; A key input unit for receiving a key input for selecting broadcast program information for each channel or outputting information data and selecting a channel from a user; When information data or broadcast program information for each channel is received from the DMB receiver, image information for displaying the information data or broadcast program for each channel is generated, and the signal that the DMB receiver can recognize the input key signal. A memory unit for storing interface software for converting Converts the user's key input into a signal that can be recognized by the DMB receiving apparatus, inputs the same to the DMB receiving apparatus, and reproduces and outputs the multimedia data when the DMB receiving apparatus is input; And a controller configured to generate the image information about the information data and the broadcast program for each channel and output the image information to a display unit when the information data or the broadcast program information for each channel is received. Claim 11 was abandoned upon payment of a setup registration fee. The method of claim 10, wherein the interface software, A mobile terminal which is downloaded from a wireless network or a personal computer (PC) by user selection. The mobile terminal capable of reproducing multimedia data and a digital multimedia broadcasting (DMB) receiving apparatus connected to a broadcast signal output apparatus capable of receiving a broadcast signal and reproducing the received broadcast signal, respectively, receive the DMB signal, and receive the mobile terminal and the broadcast signal. In the output method to the output device, A key input step of receiving a key signal for channel selection from the mobile terminal; Receiving a DMB signal of a channel corresponding to the input key signal; Generating a DMB signal by copying the received DMB signal into at least two DMB signals; Extracting multimedia data from each of the generated DMB signals; A data conversion step of converting the first multimedia data extracted from one of the generated DMB signals into a multimedia data format playable by the mobile terminal; Outputting the first multimedia data converted from the data format to the mobile terminal, and outputting the second multimedia data extracted from the other DMB signal among the generated DMB signals to the broadcasting signal output device; DMB signal output method for outputting a DMB signal to a general broadcast signal output device, characterized in that it comprises a step. The method of claim 12, wherein the data conversion step, A data format checking step of checking whether the mobile terminal can play the first multimedia data; And a conversion step of converting the first multimedia data into a data format reproducible by the mobile terminal according to the check result. Claim 14 was abandoned when the registration fee was paid. The method of claim 13, wherein the checking of the data format comprises: A data format information receiving step of receiving, from the mobile terminal, information on a multimedia data format playable by the mobile terminal; And a playback check step of determining whether the mobile terminal can play the first multimedia data according to whether a data format of the first multimedia data is included among the data formats included in the data format information. DMB signal output method for outputting a DMB signal to a general broadcast signal output device. The method of claim 12, wherein the DMB signal output step, A delay time checking step of checking a delay time required to convert the first multimedia data into a playable data format; And a buffering step of buffering the second multimedia data outputted to the broadcast signal output device according to the delay time. The method of claim 12, A checking step of checking whether there is a key input for outputting information data or broadcasting program information for each channel from the mobile terminal; An extraction step of extracting the information data or broadcast program information for each channel from any one of the received DMB signals; And providing the information data or the broadcasting program information for each channel to the mobile terminal. The DMB signal output method for outputting a DMB signal to a general broadcast signal output apparatus. The method of claim 12, wherein the DMB signal output step, DMB signal output method for outputting a DMB signal to a general broadcast signal output device, characterized in that for converting the second multimedia data output to the broadcast signal output device to S-VHS (Super-VHS) signal. A DMB receiving apparatus connected to a broadcast signal output apparatus capable of receiving a broadcast signal and reproducing the received broadcast signal, and receiving a digital multimedia broadcasting (DMB) signal, In the DMB receiving apparatus which is connected to a broadcast signal output apparatus capable of receiving a broadcast signal and reproducing the received broadcast signal, and receiving a digital multimedia broadcasting (DMB) signal, A key input unit for receiving a key for selecting a channel from a user; A memory unit including an OSD data storage unit configured to store OSD (On Screen Display) data for displaying channel information corresponding to the key input to the broadcast signal output device; A power supply unit for receiving power input for the operation of the DMB receiving apparatus; A DMB signal receiver which receives a DMB signal corresponding to a channel according to the key input when there is a key input for selecting a channel; A DMB signal analysis unit for analyzing the received DMB signal and extracting multimedia data including video / audio data, information data and control data, and broadcast program information for each channel from the DMB signal; An interface unit for outputting data to the broadcast signal output device; The DMB signal receiving unit to receive the DMB signal of the channel according to the user's key input, the DMB signal analysis unit to extract the multimedia data from the received DMB signal, OSD data corresponding to the channel selected by the user Loads the OSD data from the OSD storage unit, synthesizes the loaded OSD data with the extracted multimedia data, and transmits the synthesized multimedia data to the broadcast signal output device through the interface unit. DMB receiving apparatus comprising a. The apparatus of claim 18, wherein the broadcast signal output device comprises: A DMB, wherein the video data extracted from the DMB signal is input through an S-VHS terminal and the audio data extracted from the DMB signal is input through a preset audio input terminal. Receiving device. Claim 20 was abandoned upon payment of a registration fee. The method of claim 19, wherein the interface unit, Transmitting multimedia data extracted from the received DMB signal to the broadcast signal output apparatus through a connector having a port that matches the S-VHS terminal and an interface that can match the port that matches the audio input terminal; DMB receiving device, characterized in that. Claim 21 was abandoned upon payment of a registration fee. The method of claim 19, And a signal converter for converting the multimedia data extracted from the received DMB signal into a data format that can be reproduced by the broadcast signal output device. A method of receiving a DMB signal from a digital multimedia broadcasting (DMB) receiver connected to a broadcast signal output apparatus capable of receiving a broadcast signal and reproducing the received broadcast signal, and outputting the DMB signal to the broadcast signal output apparatus, A key input step of receiving a key for selecting a channel from a user, An OSD loading step of loading on-screen display (OSD) data corresponding to the selected channel when there is a key input for selecting the channel; Setting a channel according to the key input and receiving a DMB signal of the set channel; Extracting multimedia data including video / audio data from the received DMB signal; An OSD synthesizing step of synthesizing the loaded OSD data with the extracted multimedia data; And outputting the multimedia data synthesized with the OSD data to the broadcast signal output device. The apparatus of claim 22, wherein the broadcast signal output device is The DMB signal is a TV (Television) having an S-VHS (Super-VHS) terminal and an audio input terminal for receiving video data from the multimedia data synthesized with the OSD data. DMB signal output method for output. The apparatus of claim 22, wherein the broadcast signal output device and the DMB receiving device are The multimedia data synthesized with the OSD data through the connector is connected to each other through a connector having ports matching the S-VHS terminal and the audio input terminal, and an interface unit capable of matching with the DMB receiving device. DMB signal output method for outputting a DMB signal to a general broadcast signal output device characterized in that. The method of claim 22, A playability check step of checking whether the broadcast signal output device can play the extracted multimedia data after performing the multimedia data extraction step; And converting the extracted multimedia data into a data format reproducible by the broadcast signal output apparatus according to the playability, and then outputting the converted multimedia data to the broadcast signal output apparatus. DMB signal output method for outputting a DMB signal to a general broadcast signal output device characterized in that. In the digital multimedia broadcasting (DMB) receiving apparatus, A first connection unit capable of being connected to a mobile terminal for playing multimedia data; A broadcast signal output device for reproducing an input broadcast signal, a second connection unit connectable thereto, And a control unit for receiving the digital multimedia broadcasting signal and outputting the digital multimedia broadcasting signal to a connected mobile terminal and a connected broadcasting signal output device. The method of claim 26, wherein the second connecting portion, And a S-VHS (Super-VHS) terminal of the broadcast signal output device, and outputs the broadcast signal to the broadcast signal output device as an S-VHS signal. The method of claim 26, A data converter converting the broadcast signal into a digital multimedia data format that can be reproduced by the mobile terminal; And a converter for converting the broadcast signal into a broadcast signal format that can be reproduced by the broadcast signal output device. In the method for outputting a digital multimedia broadcasting signal in a digital multimedia broadcasting (DMB) receiving device, A receiving step of receiving the digital multimedia broadcasting signal; A mobile terminal output step of outputting the received broadcast signal to a mobile terminal capable of playing multimedia data; And a broadcast signal output step of outputting the broadcast signal to a broadcast signal output apparatus capable of reproducing the broadcast signal. The method of claim 29, wherein the mobile terminal output step, A first conversion step of data conversion of the received broadcast signal into a format reproducible by the mobile terminal; And a first output step of outputting the converted broadcast signal to the mobile terminal. The method of claim 29, wherein the broadcasting signal output step, A second conversion step of converting the received broadcast signal into a format reproducible by the broadcast signal output device; And a second output step of outputting the converted broadcast signal to the broadcast signal output device. The method of claim 29, wherein the broadcasting signal output step, And an S-VHS signal converting step of converting the broadcast signal into an S-VHS signal.

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