KR100644042B1 - Access device and digital broadcasting data receiving process method and system by the same device - Google Patents

Abstract

An access apparatus, a method for processing receipt of digital broadcasting data by using the same, and a system thereof are provided to receive the digital broadcasting data via a near field wireless communication without installing an expensive digital broadcasting receiver. A mobile communication terminal adopting a method and a system of processing receipt of digital broadcasting data by using an access system comprises a near field wireless communication module(180) and a controller(120). The near field wireless communication module(180) performs a wireless communication with the access apparatus which receives digital broadcasting data. The controller(120) receives the digital broadcasting data from the access apparatus via The near field wireless communication module(180), demodulates the received digital broadcasting data, and regenerates the demodulated digital broadcasting data. The controller(120) includes a receipt processor, a demodulation processor, and a digital broadcasting processor. The receipt processor receives the digital broadcasting data from the access apparatus via the near field wireless communication module(180). The demodulation processor demodulates the received digital broadcasting data, and outputs the digital broadcasting data via an arbitrary channel. The digital broadcasting processor extracts image and voice data from the digital broadcasting data of the corresponding channel, and regenerates the extracted image and voice data.

Description

Access device and digital broadcasting data receiving process method and system therefor {access device and digital broadcasting data receiving process method and system by the same device}

1 is a block diagram illustrating an entire digital broadcast data receiving processing system according to an embodiment of the present invention.

2 is a block diagram for explaining in detail the mobile communication terminal shown in FIG.

FIG. 3 is a block diagram illustrating the control unit shown in FIG. 2 in more detail.

4 is a block diagram for explaining the demodulation processing unit shown in FIG. 2 in more detail.

5 is a flowchart illustrating a digital broadcast data reception processing method of a mobile communication terminal according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: mobile communication terminal 110: key input unit

120: control unit 121: mobile communication processing unit

122: reception processing unit 123: demodulation processing unit

124: digital broadcast processing unit 125: channel setting unit

130: memory 140: display unit

150: voice processing unit 160: speaker

170: microphone 180: short-range wireless communication unit

190: cellular communication unit

The present invention relates to an access device and a method and a system for receiving digital broadcast data using the same, and more particularly, to an access device for receiving digital broadcast data through short-range wireless communication and demodulating and outputting the received digital broadcast data. The present invention relates to a digital broadcast data reception processing method and a system thereof.

Recently, with the development of digital broadcasting technology and mobile communication technology, interest in digital broadcasting service for allowing digital broadcasting to be watched on the go has increased. In particular, interest in digital multimedia broadcasting (DMB) services using mobile communication terminals is increasing. DMB refers to a broadcast service that enables a user to watch various multimedia broadcasts on a multi-channel while moving through a receiver equipped with an omnidirectional receiving antenna.

A receiver for receiving such digital broadcast data receives a signal directly from a satellite or a signal through a terrestrial relay station to display on a screen.

Therefore, since the mobile communication terminal must be equipped with a receiver to receive digital broadcast data, there is a burden of purchasing a terminal equipped with an expensive receiver to watch digital broadcast.

An object of the present invention is to receive digital broadcast data through short-range wireless communication and demodulate and output the received digital broadcast data without mounting an expensive receiver.

A mobile communication terminal according to an embodiment of the present invention for achieving the above object is a short-range wireless communication unit for performing short-range wireless communication with the access device for receiving digital broadcast data, and the short-range wireless communication unit in the mobile communication terminal; And a controller configured to receive digital broadcast data from the access device, demodulate the received digital broadcast data, and reproduce the demodulated digital broadcast data.

Preferably, the control unit includes a reception processing unit for receiving digital broadcast data from the access device through the short range wireless communication unit, a demodulation processing unit for demodulating the received digital broadcast data and outputting digital broadcast data corresponding to an arbitrary channel; And a digital broadcast processor for extracting and reproducing image data and audio data from the digital broadcast data of the corresponding channel processed by the demodulation processor.

More preferably, the demodulation processing unit is a CDM (Code Division Multiplexing) unit for demodulating at least one channel included in the received digital broadcast data, and an FEC (Forward Correction) for error correction of a signal demodulated by the CDM unit. An error correction unit, a clock switch connected to the CDM unit and the FEC unit for turning on / off a clock, and a multiplexed output of a signal other than a pilot signal among the signals output from the FEC unit; MUX), and a clock controller for controlling the clock switch.

Still more preferably, the control unit may further include a channel setting unit for setting a channel desired by the user.

Still more preferably, the channel setting unit controls the clock controller to selectively operate only the CDM unit and the FEC unit corresponding to the channel selected by the user.

In addition, the access device according to an embodiment of the present invention is an antenna for receiving digital broadcast data from the outside, a tuner unit for tuning and outputting the digital broadcast data received through the antenna, and the output by the tuner unit And a short range wireless communication unit configured to transmit digital broadcast data through a short range wireless communication method.

In addition, the digital broadcast data reception processing system according to an embodiment of the present invention includes an access device for receiving digital broadcast data and transmitting the received digital broadcast data through a short-range wireless communication method, and digital broadcast data transmitted from the access device. And a mobile communication terminal for demodulating the received and received digital broadcast data to reproduce the demodulated digital broadcast data.

In addition, the digital broadcast data reception processing method of the mobile communication terminal according to an embodiment of the present invention is a digital broadcast data reception processing method of the mobile communication terminal, the first device for performing short-range wireless communication with the access device for receiving digital broadcast data And a second step of receiving digital broadcast data from an access device performing near field communication by the first step, demodulating the received digital broadcast data, and reproducing the demodulated digital broadcast data. do.

Preferably, the second step includes a reception processing step of receiving digital broadcast data from the access device through short-range wireless communication, and demodulating the received digital broadcast data to output digital broadcast data corresponding to an arbitrary channel. And a digital broadcast processing step of extracting and reproducing video data and audio data from the digital broadcast data of the corresponding channel processed by the demodulation processing step.

More preferably, after the reception processing step, further comprising a channel setting step of setting a channel desired by the user, wherein the demodulation processing step outputs digital broadcast data corresponding to the channel set by the channel setting step. It is done.

1 is a block diagram illustrating a digital broadcast data reception processing system according to an embodiment of the present invention.

Referring to FIG. 1, a digital broadcast data reception processing system according to an embodiment of the present invention includes an access device 300 for receiving digital broadcast data and transmitting the received digital broadcast data to the outside through a short range wireless communication scheme; And a mobile communication terminal 100 for receiving digital broadcast data transmitted from the access device 300 and demodulating and outputting the digital broadcast data.

In this case, the digital broadcast data refers to various digital multimedia data consisting of video and / or audio, and the digital broadcast data is received through satellite or terrestrial wave so that the user can watch the digital broadcast.

Such digital broadcasting service refers to a service that is broadcast through satellite or terrestrial wave using a portable or fixed terminal such as a small TV or PDA (Personal Digital Assistants).

Such digital broadcasting services include satellite digital multimedia broadcasting (hereinafter referred to as "satellite DMB") services and terrestrial digital multimedia broadcasting (hereinafter referred to as "terrestrial DMB") services.

Satellite DMB is a digital broadcasting service that uses the frequency transmitted by satellite Hanbyeol, the world's first DMB satellite, and terrestrial DMB is broadcasting by using a frequency transmitted from a terrestrial transmission station like the current broadcast or radio.

Since satellite DMB receives high frequency frequencies through satellites, there is no parallax of information, so the same digital broadcasting data can be provided in all regions of the country.However, in case of terrestrial DMB, digital broadcasting data transmitted by each transmitting station is regional Because of the phenomenon that the information is distorted due to parallax when receiving the data, digital broadcasting data is provided using a different frequency in each region, such as a TV.

In the present embodiment, the short-range wireless communication method is set to the Bluetooth method, but the present invention is not limited thereto. In addition, the short-range wireless communication method may be set to an infrared data association (IRDA) method or a radio frequency (RF) method.

This Bluetooth is a short-range wireless communication network as a technical standard for wireless connection within a short range (10m ~ 100m), in this embodiment adopts a wireless LAN transmission method using the Industrial Scientific Medical (ISM) band of the 2.4GHz band have.

The access device 300 includes an antenna 310, a tuner unit 320, a short range wireless communication unit 330, and the like.

The antenna 310 receives digital broadcast data from a satellite digital broadcast station (not shown) or a terrestrial digital broadcast station (not shown).

The tuner 320 tunes and outputs digital broadcast data received through the antenna 310 according to a preset format. That is, the tuner 320 converts the digital broadcast signal received through the antenna 310 into an IF (intermediate frequency) signal and separates it into I and Q signals (hereinafter referred to as 'I / Q'). Output

The short range wireless communication unit 330 transmits the digital broadcast data converted to the preset format to the mobile communication terminal 100 in the short range wireless communication area through the short range wireless communication method. In this case, the mobile communication terminal 100 requests digital broadcast data to the access device 300 through a short range wireless communication method.

Referring to FIG. 2, the mobile communication terminal 100 includes a controller 120 for receiving digital broadcast data transmitted from the access device 300, demodulating and outputting the received digital broadcast data, and a button. A memory 130 storing a key input unit 110, various terminal information of the mobile communication terminal, a program for processing digital broadcast data received through a short range wireless communication method, and an external screen window and / Alternatively, a short range wireless communication unit 180 for performing wireless signal processing using the display unit 140, the voice processing unit 150, the microphone 160, the speaker 170, and the short range wireless communication to provide an internal screen window. ), And a cellular communication unit 190 for performing wireless signal processing for communicating with mobile communication terminals.

The control unit 120 controls the overall operation of the mobile communication terminal 100 and simultaneously receives digital broadcast data from the access device 300, demodulates the received digital broadcast data, and digital broadcast data corresponding to a preset channel. Outputs This case corresponds to a case where the mobile communication terminal 100 is in a short range wireless communication area, and when the mobile communication terminal 100 is out of the short range wireless communication area, digital broadcast data cannot be received.

The short range wireless communication unit 180 converts a signal output from the control unit 120 into a short range wireless communication type to perform communication with the access device 300 in the short range wireless communication area. In addition, the short-range wireless communication unit 180 converts the short-range wireless communication method received from the terminal connected to the PSTN network or IP network into a desired signal and outputs it.

Here, the short-range wireless communication unit 180 is described as performing the communication in the Bluetooth communication method, but may also communicate in the infrared communication method, RF communication method.

The cellular communication unit 190 is controlled by the controller 120 and converts a signal output from the controller 120 into a wireless signal. In addition, the cellular communication unit 190 converts the radio signal received through the antenna ANT into a desired signal and outputs it.

The voice processing unit 150 modulates the voice signal input from the microphone 170 and converts the voice signal into voice data, and inputs the voice data and memory 130 input from the short range wireless communication unit 180 or the cellular communication unit 190. The stored voice data are demodulated into a voice signal and output as a voice through a speaker 160.

The key input unit 110 includes a plurality of numeric keys, a menu key, and a function key for performing various functions, and outputs key data to the controller 120 by an external operation.

Therefore, the controller 120 reads the menu from the memory 130 and displays the menu on the display unit 140 according to a user's menu display request by the key input unit 110. That is, the key input unit 110 is a conventional user information input means, and has a plurality of keys suitable for a mobile communication terminal to be applied, such as a plurality of numeric keys and function keys, and if there is an input of each of the provided keys, Therefore, by outputting the corresponding unique key data to the control unit 120, through the key input operation of the key input unit 110 is entered into the menu display mode and selection of the menu is made. Then, the controller 120 reads the menu according to the corresponding key input from the memory 130 and displays the menu on the display unit 140.

The display unit 140 is a display device such as a liquid crystal display (LCD). The display unit 140 displays the state of the mobile communication terminal or the progress of the program under the control of the control unit 120. That is, the overall state of the mobile communication terminal and input user information are displayed.

In the memory 130, an operation program and a system program of the controller 120 are stored, and the operation program or system program is stored in a ROM region which is normally included and can be erased as necessary. Electrically erasable ROMs include EEPROM and flash memory. The memory 130 also includes a RAM that temporarily stores data generated during execution of various operating programs.

In addition, the memory 130 stores a program for processing digital broadcast data received through a near field communication method. Through such a program, the digital broadcast data received from the access device 300 can be viewed.

Referring to FIG. 3, the controller 120 may include a mobile communication processor 121 for performing a process for performing a mobile communication service, a reception processor 122 for receiving digital broadcast data through a short range wireless communication method, and reception. A demodulation processor 123 for demodulating the digital broadcast data and outputting digital broadcast data of a corresponding channel, a digital broadcast processor 124 for reproducing demodulated digital broadcast data, and a channel for setting a channel desired by a user. Setting unit 125 and the like.

The mobile communication processing unit 120 is configured to operate using a known mobile communication technology as a module for performing a mobile communication service using a radio resource in a mobile communication terminal, and thus detailed description thereof will be omitted.

The reception processor 122 receives the digital broadcast data from the access device 300 through a short range wireless communication method. In this case, the digital broadcasting data may be received when the access device 300 is in the short range wireless communication area, but the digital broadcasting data may not be received when the access device 300 is out of the short range wireless communication area.

The demodulation processor 123 demodulates the digital broadcast data received by the reception processor 122 and outputs digital broadcast data corresponding to an arbitrary channel.

Referring to FIG. 4, the demodulation processing unit 123 is further described. The demodulation processing unit 123 may include a code division multiplexing unit (a) for demodulating at least one channel included in the received digital broadcast data. Forward Error Correction (FEC) section (b) for error correction of the demodulated signal, a clock switch (c) connected to the CDM section (a) and the FEC section (b) for turning on / off a clock, and the FEC section MUX (d) for multiplexing and outputting signals other than the pilot signal among the signals output from (b), a clock controller (e) for controlling a clock switch, and the like.

Here, CDM is a method of classifying signals using a specific code at the same frequency among multiplexing schemes, and FEC is a scheme for actively correcting at a receiving side when an error occurs.

In the present embodiment, a representative CDM channel is an EPG (Electronic Program Guide), which is program guide information using a pilot channel for synchronous demodulation of received data and transmission of control data to a system, and program designation information and system information. For example, five CDM channels include a PSI / SI channel for CAS, a PSI / SI channel for CAS including Conditional Access System (CAS) information for confirming subscriber authentication, and a video and audio channel for transmitting video and audio. Accordingly, in order to demodulate five CDM channels, the CDM unit (a) and the FEC unit (b) are composed of five CDM1-5 and FEC1-5, respectively.

In receiving the multiplexed CDM channel, by using a clock switch (c) to each of the CDM unit (a) and the FEC unit 22 without using all five CDM units (a) and FEC (b). Therefore, only the CDM and FEC corresponding to the channel including the actual information or the channel selected by the user are operated.

To this end, a clock controller e for controlling a clock supplied to each switch c, and a channel setting unit 125 which selects a channel including preset real information or a channel set by a user. It includes.

That is, the clock switch c serves to turn on / off the clocks of the CDM unit a and the FEC unit b. In this case, the switch Sn1 switches the clock of the CDM unit a and the switch Sn2. ) Turns on / off the clock of the FEC unit (b), and these clock switches (c) are controlled by the clock controller (e) by receiving a command from the channel setting unit (123). Accordingly, the digital broadcast data of the channel selected by the user is output.

The digital broadcast processor 124 extracts the video data and the audio data from the digital broadcast data of the corresponding channel processed by the demodulation processor 123 and displays the extracted video data on the display unit 140 and displays the audio data on the speaker ( 160).

The channel setting unit 125 controls the clock controller 123 e to selectively operate only the CDM unit 123 and the FEC unit 123 b corresponding to the channel selected by the user. Accordingly, the digital broadcast data corresponding to the channel selected by the user is processed by the digital broadcast processor 124 to output image data and audio data.

By doing so, even if an expensive receiver is not equipped to receive digital broadcasting, it is possible to demodulate the digital broadcasting data received through a short range wireless communication system to watch digital broadcasting.

A process of receiving and processing digital broadcast data in a mobile communication terminal according to an embodiment configured as described above is as follows.

5 is a flowchart illustrating a digital broadcast data reception processing method of a mobile communication terminal according to the present invention.

The controller 120 of the mobile communication terminal 100 performs short-range wireless communication with an access device 300 that receives digital broadcast data from a satellite digital broadcast station (not shown) or a terrestrial digital broadcast station (not shown) (S110). ).

Next, the reception processor 122 of the controller 120 determines whether digital broadcast data is received from the access device 300 (S120).

As a result of the determination in step S120, when digital broadcast data is not received from the access device 300, the standby state is maintained for a predetermined time. In this case, the case where the digital broadcasting data is not received from the access device 300 corresponds to a case where the user is not in the short range wireless communication area with the access device 300 or when the user does not request to watch the digital broadcasting.

As a result of the determination in step S120, when digital broadcast data is received from the access device 300, the demodulation processing unit 123 of the control unit 120 demodulates the received digital broadcast data to obtain digital broadcast data corresponding to a preset channel. Output (S130). In this case, the channel is described as a channel preset by the user, but may be changed to another channel.

Next, the digital broadcast processor 124 of the controller 120 extracts the video data and the audio data from the demodulated digital broadcast data and outputs the extracted video data and the audio data (S140). In this case, the extracted image data is displayed on the display unit 140, and the extracted audio data is output through the speaker 160.

By doing so, it is possible to receive digital broadcast data through a short range wireless communication system, demodulate the received digital broadcast data, and watch a digital broadcast of a desired channel without attaching an expensive digital broadcast receiver.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

According to the present invention as described above there is an effect that can receive digital broadcast data through a short-range wireless communication method without mounting an expensive digital broadcast receiver.

In addition, according to the present invention as described above there is an effect that it is possible to conveniently watch the digital broadcast of the desired channel by demodulating the digital broadcast data received through the short-range wireless communication method.

Claims (10)

In the mobile communication terminal, A short range wireless communication unit performing short range wireless communication with an access device for receiving digital broadcast data; And a controller configured to receive digital broadcast data from the access device through the short range wireless communication unit, and to demodulate the received digital broadcast data to reproduce demodulated digital broadcast data. The method of claim 1, wherein the control unit A reception processor that receives digital broadcast data from the access device through the near field communication unit; A demodulation processor configured to demodulate the received digital broadcast data and output digital broadcast data corresponding to an arbitrary channel; And a digital broadcast processor for extracting and reproducing video data and audio data from the digital broadcast data of the corresponding channel processed by the demodulation processor. The method according to claim 2, wherein the demodulation processing unit A code division multiplexing (CDM) unit for demodulating at least one channel included in the received digital broadcast data; A forward error correction (FEC) unit for error correction of a signal demodulated by the CDM unit, A clock switch connected to the CDM unit and the FEC unit to turn on / off a clock; MUX for multiplexing and outputting signals other than pilot signals among the signals output from the FEC unit; And a clock controller for controlling the clock switch. The method of claim 3, wherein the control unit And a channel setting unit for setting a channel desired by the user. The method of claim 4, wherein the channel setting unit And controlling the clock controller to selectively operate only the CDM unit and the FEC unit corresponding to the channel selected by the user. An antenna for receiving digital broadcast data from the outside; A tuner unit for tuning and outputting digital transmission data received through the antenna; And a short range wireless communication unit for transmitting the digital broadcast data output by the tuner through a short range wireless communication method. An access device for receiving digital broadcast data and transmitting the received digital broadcast data through a short range wireless communication method; And a mobile communication terminal which receives the digital broadcast data transmitted from the access device and demodulates the received digital broadcast data to reproduce the demodulated digital broadcast data. A digital broadcast data reception processing method of a mobile communication terminal, A first step of performing short-range wireless communication with an access device receiving digital broadcast data; And a second step of receiving digital broadcast data from an access device performing near field communication by the first step, demodulating the received digital broadcast data, and reproducing the demodulated digital broadcast data. Digital broadcast data reception processing method of a terminal. The method of claim 8, wherein the second step A reception processing step of receiving digital broadcast data from the access device through near field communication; A demodulation processing step of demodulating the received digital broadcast data to output digital broadcast data corresponding to an arbitrary channel; And a digital broadcast processing step of extracting and reproducing image data and audio data from the digital broadcast data of the corresponding channel processed by the demodulation processing step. The method according to claim 9, after the receiving processing step, In addition, the channel setting step of setting the user desired channel, The demodulation process step And digital broadcast data corresponding to a channel set by the channel setting step.

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