KR100730814B1 - Apparatus for receiving a multi channel of satellite digital multimedia broadcasting service - Google Patents

Abstract

The present invention is to receive the broadcast data transmitted from the satellite DMB broadcasting center at the same time to restore the multi-channel digital broadcast data, and to transmit the restored data to the DMB terminal through a wired / wireless interface, the configuration for this A tuner for receiving a broadcast data channel transmitted through a CDM, a CDM demodulator for detecting a CDM signal in the received broadcast data channel, pilot channel information of the detected CDM signal, CAS information and EPG information, and information as common inputs DMB terminal through a broadcast channel decoding function means for decoding a plurality of specified broadcast data channels, a demultiplexer for demultiplexing a plurality of decoded broadcast data channels at the same time, and the broadcast data of the demultiplexed plurality of channels through separate wired and wireless communication interfaces. And a logical channel data control unit for controlling transmission. Therefore, there is no need to use a separate amplifier or gap filler for the reception of satellite signals, and there is an effect that the multi-channel digital broadcast data service can be provided in a predetermined area such as a vehicle or a building.

Description

Multichannel receiver for satellite DMB service {APPARATUS FOR RECEIVING A MULTI CHANNEL OF SATELLITE DIGITAL MULTIMEDIA BROADCASTING SERVICE}

1 is a system configuration diagram for a satellite DMB service;

FIG. 2 is a diagram illustrating an embodiment in which data can be transmitted through a CDM channel based on the system configuration of FIG. 1;

3 is a schematic illustration of a satellite DMB receiver;

4 illustrates a structure of a multi-channel simultaneous reception system for providing a satellite DMB service in an indoor or limited space according to an embodiment of the present invention;

5 is a block diagram schematically illustrating a digital broadcasting terminal for outputting multimedia broadcasting data provided through the multi-channel receiving system shown in FIG. 4;

FIG. 6 illustrates a structure of a multi-channel simultaneous reception system for providing satellite DMB service using a DMB modem chip in an indoor or limited space according to another embodiment of the present invention; FIG.

FIG. 7 illustrates a structure of a multi-channel simultaneous reception system for providing satellite DMB service using a DMB modem chip in an indoor or limited space according to another embodiment of the present invention.

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

10, 100, 1000: tuner 20, 200, 2000: CDM demodulator

30: broadcast channel decoding function module 35: pilot channel decoder

38, 301-1, ..., 301-8, 3001: receiver control unit

40, 400, 4000: Demultiplexer

50, 500, 5000: Logical channel data controller

60, 65, 600, 6000: wired / wireless communication interface

70: AV decoder 80: stereo DAC

90: graphics processor 95: LCD control unit

300-1, ..., 300-n, 3000-1, ..., 3000-n,: Multiple DMB Modems

The present invention relates to a multi-channel receiving apparatus for a satellite multi-medea broadcasting (DMB) service. More particularly, the present invention relates to multi-channel digital broadcasting data by simultaneously receiving broadcast data transmitted from a satellite DMB broadcasting center. The present invention relates to a device capable of restoring data and transmitting the restored data to a DMB terminal through a wired / wireless interface.

As is well known, the satellite DMB service refers to a satellite broadcasting service capable of watching various multi-channel multimedia broadcasting data anytime and anywhere through a personal portable receiver or a vehicle receiver. To date, TV broadcasting services are aimed at TV receivers installed at home, both terrestrial, cable TV, and satellite broadcasting. Also, the satellite broadcasting service provider guarantees the mobility of broadcasting services for vehicles equipped with car antennas. However, this is only a mobile type for a broadcast service.

On the other hand, the satellite DMB service is a personal service in terms of service to individuals through mobile phones, PDAs, dedicated terminals or vehicle terminals, and when the satellite DMB broadcasting center transmits multi-channel broadcast data to satellites, It is implemented by receiving it and transmitting it to DMB terminals nationwide through radio waves.

That is, referring to FIG. 1, FIG. 1 is a system configuration diagram for a satellite DMB service. When the program provider S1 provides various broadcast contents related to broadcast data, the satellite DMB broadcasting center S2 may use a program provider ( When broadcasting data (for example, multi-channel audio broadcasting and traffic information, car navigation information, weather information, etc.) provided from S1 is transmitted to the satellite S3, the satellite S3 transmits the L-band ( It is a broadcasting service which transmits to any one of the DMB terminals S5 by switching to an arbitrary band frequency among the bands of 1 Ghz to 2 Ghz), S band (2 Ghz to 4 Ghz) and Ku band (12 Ghz to 14 Ghz).

The satellite DMB service is a new concept that includes the system E standard among the satellite DAB standards for the purpose of high quality mobile multimedia broadcasting service. In other words, the digital system E for the satellite DMB service is to provide a multimedia service to any of the DMB terminals S5 through a terrestrial gap filler S4 complementary to the satellite. System E is designed to optimize performance for both satellite and terrestrial relay services using the frequency band 2.63Ghz to 2.655Ghz, and is concatenated using RS code and convolutional error correction coding. The code operates with DS-CDM based on QPSK modulation.

As such, the satellite DMB service uses a CDM modulation scheme and uses a 64-bit Walsh code. Here, the Walsh code is a code for distinguishing various terminals, and the length of the code varies depending on the transmission bandwidth. Currently, 30 CDM channels will be used in the satellite DMB service. Since 256Kbps of data can be transmitted per CDM channel, a total of 7.68Mbps payload data can be transmitted in the 25MHz band. In other words, in the case of video transmission, two CDM channels are transmitted, and in the case of an audio channel, one channel is transmitted.

In addition, the user terminal is required to broadcast a broadcast service as a correspondence table between a logical service channel and a CDM channel, a pilot channel information for acquiring additional information for receiver activation, a CAS information channel for program designation information and service information, and an EPG information channel. As shown in FIG. 2, any of the DMB terminals should be able to decode five CDM channels simultaneously.

However, a vehicle receiver for satellite DMB service is currently configured to receive only one broadcast channel. That is, referring to FIG. 3, a schematic diagram of a satellite DMB receiver is provided by amplifying and supplying a tuner 1 for receiving a broadcast data channel transmitted from a satellite and a broadcast data received by the tuner 1. CDM / FEC which performs error correction after detecting / despreading and decoding the CDM signal among the broadcasting data amplified and provided by the RF amplifying unit 1-1 and the RF amplifying unit 1-1. 2), CAS (3) which judges and provides the viewing authority of the customer for the broadcast data corrected by the CDM / FEC (2), and demultiplexes the error corrected broadcast data and compresses the video / audio signal. Decompresses and decodes them for playback by the DMB terminal and outputs them to the output means (for example, the speaker S6 and the video terminal S7) via the stereo DAC 5, the graphic 6, and the LCD controller 7. AV decoding 4 is provided.

In more detail, the above-described aspects of transmitting and receiving the CDM signal will be described. First, referring to the transmitting side of the CDM signal, first, broadcasters perform different orthogonal washes when spreading signals in order to broadcast their programs independently. Code is used, and since the CDM signal is spread over a wide frequency band, the power density per bandwidth is relatively low. The CDMA modulator also includes a convolutional channel coder that reduces transmission errors, and a block interleaver with bit-wise interleaving to overcome shadowing and blocking in satellite transmission environments. The signal is transmitted by spreading with a (PN) code.

Next, looking at the receiving side of the CDM signal, it consists of a searcher (searcher) and a Rake receiver and a digital signal processing portion. The tester synchronizes the PEN generator inside the terminal through the received pilot channel information, and the rake receiver combines the signals from each finger using the phase information obtained in the process of acquiring the pilot channel information as the reference phase. In particular, it is possible to improve the performance of a receiver in a multipath fading environment by using a rake combined reception technique and a diversity technique.

As such, since the conventional satellite DMB service charges while providing services in units of mobile terminals centered on personal DMB terminals, such satellite DMB services may be provided through mobile and fixed vehicle terminals as well as personal portable terminals. The structure of the receiver as described above is not optimal. In addition, in order to provide a service for a user having a terminal that does not receive a satellite DMB signal, a connection with another communication interface should also be considered. That is, when using a satellite DMB service in a mobile vehicle or a place indoors, it is inconvenient to amplify the signal to a personal terminal using a separate amplifier or a gap filler to receive satellite signals.

Accordingly, the present invention has been made to solve the above-described problems, the object of which is to provide a satellite DMB service, simultaneously receiving broadcast data transmitted from the satellite DMB broadcasting center to restore to multi-channel digital broadcast data, The present invention provides a multi-channel receiving apparatus for satellite DMB service that can transmit recovered data to a DMB terminal through a wired / wireless interface.

In accordance with an aspect of the present invention, a multi-channel receiving apparatus for a satellite DMB service includes a tuner for receiving a broadcast data channel transmitted through a satellite, and a CDM demodulator for detecting a CDM signal in the received broadcast data channel. And broadcast channel decoding function means for decoding the plurality of broadcast data channels designated by pilot channel information of the detected CDM signal, CAS information and EPG information, and information as a common input, and a plurality of decoded broadcast data channels simultaneously. A demultiplexer for demultiplexing and a logical channel data control unit for transmitting and controlling the demultiplexed broadcast data of a plurality of channels to a DMB terminal through a separate wired / wireless communication interface.

In addition, a multi-channel receiving apparatus for a satellite DMB service according to another aspect of the present invention for achieving the above object is a tuner for receiving a broadcast data channel transmitted through a satellite, and detects a CDM signal in the received broadcast data channel A CDM demodulator and a receiver that applies a receiver controller to each of a plurality of DMB modems with respect to the detected CDM signal, and decodes a plurality of designated broadcast data channels using pilot channel information, CAS information, EPG information, and information as common inputs. A channel decoding function means, a demultiplexer for demultiplexing a plurality of decoded broadcast data channels at the same time, and a logical channel data control unit for controlling the transmission of the demultiplexed broadcast data to a DMB terminal through a separate wired / wireless communication interface. Characterized in that.

In addition, a multi-channel receiving apparatus for a satellite DMB service according to another aspect of the present invention for achieving the above object is a tuner for receiving a broadcast data channel transmitted through a satellite, and a CDM signal in the received broadcast data channel A plurality of broadcast data designated by using a pilot channel information, CAS information, and EPG information, and information as a common input by applying a receiver control unit to any DMB modem among a plurality of DMB modems with respect to the detected CDM demodulator and the detected CDM signal; A broadcast channel decoding function means for decoding channels, a demultiplexer for demultiplexing a plurality of decoded broadcast data channels at the same time, and logic for transmitting and controlling the demultiplexed broadcast data of a plurality of channels to a DMB terminal through a separate wired / wireless communication interface And a channel data control unit.

In addition, a multi-channel receiving apparatus for a satellite DMB service according to another aspect of the present invention for achieving the above object is a tuner for receiving a broadcast data channel transmitted through a satellite, and a CDM signal in the received broadcast data channel A CDM demodulator for detecting, a broadcast channel decoding function means for decoding pilot channel information of the detected CDM signal, CAS information and EPG information, and a plurality of broadcast data channels designated by using these information as a common input; A demultiplexer for demultiplexing all broadcasting channels at the same time, and a logical channel data control unit for decoding the demultiplexed broadcast data of the multiplexed channels into a decoder and then transmitting and controlling the transmission to a DMB terminal through a separate wired / wireless communication interface. It is done.

Hereinafter, a plurality of embodiments of the present invention may exist, and a preferred embodiment will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate the objects, features and advantages of the present invention through this embodiment.

4 is a diagram illustrating a structure of a multi-channel simultaneous reception system for providing satellite DMB service in an indoor or limited space according to an embodiment of the present invention, which includes a tuner 10, a CDM demodulator 20, and a broadcast. A channel decoding function module 30, a pilot channel decoder 35, a receiver controller 38, a demultiplexer 40, a logical channel data controller 50, and a wired / wireless communication interface 60. do.

The tuner 10 transmits a broadcast data (for example, multi-channel audio broadcasting and traffic information, car navigation information, weather information, etc.) channel to the satellite S3 in the satellite DMB broadcasting center S2 shown in FIG. The broadcast data channel transmitted through the satellite S3 is received and provided to the CDM demodulator 20.

The CDM demodulator 20 performs error correction after detecting / despreading and decoding the CDM signal in the broadcast data channel received by the tuner 10 to the broadcast channel decoding function module 30 and the pilot channel decoder 35. to provide.

The broadcast channel decoding function module 30 includes a broadcast channel decoding (CAS, ch1) for decoding CAS information, a broadcast channel decoding (EPG, ch2) for decoding EPG information, a broadcast channel decoding (data, ch2) for data decoding, ..., all 30 broadcast data channels associated with broadcast channel decoding (data, ch29) for data decoding are decoded and provided to the demultiplexer 40.

When the pilot channel decoder 35 decodes the pilot channel information and provides it to the receiver control unit 38, the receiver control unit 38 uses the broadcast channel decoder function module by using the pilot channel information decoded by the pilot channel decoder 35 ( In step 30), it is possible to decode all 30 broadcast data channels that require decoding.

The demultiplexer 40 demultiplexes all 30 decoded broadcast data channels provided under the control of the receiver controller 38 to the logical channel data controller 50 at the same time.

The logical channel data controller 50 performs a scheduling and processing function for accurately delivering the multimedia broadcasting data of the multiplexed demultiplexed by the demultiplexer 40 to the required terminal, thereby providing a separate wired / wireless communication interface 60. Through the multimedia broadcasting data is transmitted to the digital broadcasting terminal of FIG.

Next, FIG. 5 is a block diagram schematically illustrating a digital broadcasting terminal for outputting multimedia broadcasting data provided through the multi-channel receiving system shown in FIG. 4, wherein the wired / wireless communication interface 65 and the AV are shown. A decoder 70, a stereo DAC 80, a graphics processor 90, and an LCD controller 95 are included.

The wired / wireless communication interface 65 is connected to the wired / wireless communication interface 60 in the multi-channel receiving system of FIG. 4 to receive the multimedia broadcast data provided through the interface 60 and provide it to the AV decoder 70. do.

The AV decoder 70 decodes multimedia broadcast data received through the wired / wireless communication interface 60 to restore original data, and then provides audio data among the restored multimedia broadcast data to the stereo DAC 80. Then, the stereo DAC 80 converts the digital audio data provided from the AV decoder 70 into an analog audio signal, and outputs the audio signal so that the user can listen to it through the output means (for example, the speaker S6).

At the same time, the AV decoder 70 provides the graphic processor 90 with video data of the recovered multimedia broadcasting data. The graphic processor 90 then MPEG-processes the video data provided by the AV decoder 70 and provides it to the LCD control unit 95, and the LCD control unit 95 supplies the video signal emulated by the graphic processor 90. The output means (for example, display (S7)) so that the user can see.

Here, the AV decoder 70 is located between the wired / wireless communication interface 65, the stereo DAC 80 and the graphic processor 90, as shown in FIG. 5, but the capacity of the digital broadcasting terminal of FIG. In consideration of the standard, when the AV decoder 70 is deleted in FIG. 5, the deleted AV decoder 70 is positioned between the logical channel data control unit 50 and the wired / wireless communication interface 60 of FIG. 4. As such, when designed, the AV decoder 70 decodes the multimedia broadcast data provided by the logical channel data controller 50 to restore the original data, and then uses audio data among the restored multimedia broadcast data. To the stereo DAC 80 via the wireless / wireless communication interface (60,65), and to transmit the video data among the restored multimedia broadcasting data to the graphic processor (90) via the wire / wireless communication interface (60,65). It may be empty.

The wired / wireless communication interfaces 60 and 65 are responsible for transmitting the decoded multimedia broadcast data to each user terminal, and various wired and wireless communication technologies may be used. First of all, 100 Mbps Ethernet can be connected between a multi-channel receiver and a user terminal, and when using a wireless interface, WLAN technology or UWB technology can be applied.

Meanwhile, FIG. 6 is a diagram illustrating a multi-channel simultaneous reception system structure for providing satellite DMB service using a DMB modem chip in an indoor or limited space according to another embodiment of the present invention. CDM demodulator 200, multiple DMB modems 300-1, ..., 300-n, demultiplexer 400, logical channel data control unit 500, wired / wireless communication interface 600 ).

The tuner 100 transmits a broadcast data (for example, multi-channel audio broadcasting and traffic information, car navigation information, weather information, etc.) channel to the satellite S3 in the satellite DMB broadcasting center S2 shown in FIG. The broadcast data channel transmitted through the satellite S3 is received and provided to the CDM demodulator 200.

The CDM demodulator 200 performs error correction by detecting / despreading and decoding the CDM signal in the broadcast data channel received by the tuner 100, thereby performing a plurality of DMB modems 300-1, ..., 300-n. ) To DMB modems (300-1, ..., 300-8).

Of the DMB modems 300-1, ..., 300-8, the DMB modem 300-1 is connected to the receiver control unit 301-1 separately to decode the pilot channel decoding (ch0) and CAS information for pilot channel decoding. Broadcast data channel in which two channels of broadcast channel decoding (CAS, ch1) for decoding, broadcast channel decoding (EPG, ch2) for decoding EPG information, and broadcast channel decoding (data, ch2 to ch3) for data decoding are linked And decodes the demultiplexer 400.

Subsequently, the DMB modem 300-2 of the DMB modems 300-1, ..., 300-8 is connected to the receiver control unit 301-2 separately so that pilot channel decoding (ch0) and data for pilot channel decoding are performed. The decoded broadcast data channel associated with four channels of broadcast channel decoding (data, ch4 to ch7) for decoding is decoded and provided to the demultiplexer 400.

Subsequently, each of the DMB modems 300-3, 4, 5, 6, and 7 of the DMB modems 300-1, ..., 300-8 decodes the broadcast data channel associated with the four channels and demultiplexes ( 400, and finally, the DMB modem 300-8 is connected to the receiver control unit 301-8 separately so that the pilot channel decoding (ch0) for pilot channel decoding and the broadcast channel decoding (data, The decoded broadcast data channel associated with each of the two channels ch28 to ch29 is decoded and provided to the demultiplexer 400.

The demultiplexer 400 demultiplexes all 30 decoded broadcast data channels provided under the control of the receiver controllers 301-1,..., 301-8 simultaneously and provides them to the logical channel data controller 500. .

The logical channel data controller 500 performs a scheduling and processing function for correctly delivering the multimedia broadcasting data of the multiplexed demultiplexed by the demultiplexer 400 to the required terminal through the wired / wireless communication interface 600. The multimedia broadcasting data is transmitted to the digital broadcasting terminal of FIG.

FIG. 7 illustrates a structure of a multi-channel simultaneous reception system for providing satellite DMB service using a DMB modem chip in an indoor or limited space according to another embodiment of the present invention. The tuner 1000 and the CDM are shown in FIG. Demodulator 2000, multiple DMB modems 3000-1, ..., 3000-n, demultiplexer 4000, logical channel data control unit 5000, wired / wireless communication interface 6000. Include.

The tuner 1000 transmits a broadcast data (for example, multi-channel audio broadcasting and traffic information, car navigation information, weather information, etc.) channel to the satellite S3 in the satellite DMB broadcasting center S2 shown in FIG. The broadcast data channel transmitted through the satellite S3 is received and provided to the CDM demodulator 2000.

The CDM demodulator 2000 performs error correction after detecting / despreading and decoding the CDM signal in the broadcast data channel received by the tuner 1000, thereby performing a plurality of DMB modems 3000-1, ..., 3000-n. ) To DMB modems (3000-1, ..., 3000-7).

The DMB modem 3000-1 among the DMB modems 3000-1,..., 3000-7 is connected to the receiver control unit 3001 and used for pilot channel decoding (ch0) and CAS information decoding for pilot channel decoding. Decodes a broadcast data channel in which two channels of broadcast channel decoding (CAS and ch1), broadcast channel decoding (EPG and ch2) for decoding EPG information and broadcast channel decoding (data and ch2 to ch3) for data decoding are linked. To provide to the demultiplexer (4000).

Subsequently, among the DMB modems 3000-1, ..., 3000-7, the DMB modem 3000-2 is broadcast data in which five channels of broadcast channel decoding (data, ch4 to ch8) for data decoding are linked. The channel is decoded and provided to the demultiplexer 4000.

Subsequently, each of the DMB modems 3000-3, 4, 5, and 6 of the DMB modems 3000-1,..., 3000-7 decodes the broadcast data channel associated with five channels to demultiplexer 4000. Finally, the DMB modem 3000-7 decodes pilot channel information associated with pilot channel decoding (ch 0) for pilot channel decoding and provides the decoded pilot channel information to the demultiplexer 4000.

The demultiplexer 4000 demultiplexes all 30 decoded broadcast data channels provided under the control of the receiver controller 3001 to the logical channel data controller 5000 at the same time.

The logical channel data controller 5000 performs a scheduling and processing function for accurately delivering the multimedia broadcasting data of the multiplexed demultiplexed by the demultiplexer 4000 to the required terminal through the wired / wireless communication interface 6000. The multimedia broadcasting data is transmitted to the digital broadcasting terminal of FIG.

Therefore, by receiving the broadcast data transmitted from the satellite DMB broadcasting center (S2) through the satellite (S3) and simultaneously restored to the multi-channel digital broadcast data, by receiving the restored data through the wired / wireless interface, satellite signal There is no need to use a separate amplifier or gap filler to receive the data, and may also be provided with multi-channel digital broadcast data service in a predetermined area such as a vehicle or a building.

In addition, since the present invention is disclosed as a right within the spirit and claims of the present invention, the present invention may include any modification, use and / or adaptation using general principles, and the present invention as a matter deviating from the description of the present specification. It includes everything that falls within the scope of known or customary practice in the art to which it belongs and falls within the scope of the appended claims.

As described above, the present invention receives the broadcast data transmitted from the satellite DMB broadcasting center through the satellite to restore the multi-channel digital broadcast data at the same time, by receiving the restored data through the wired / wireless interface, There is no need to use a separate amplifier or gap filler to receive the signal, and there is an effect that the digital broadcasting data service of the multi-channel can be provided in a predetermined area such as a vehicle or a building.

Claims (11)

In the channel receiving system for providing a satellite DMB service, A tuner for receiving a broadcast data channel transmitted through the satellite; A CDM demodulator for detecting a CDM signal in the received broadcast data channel; Broadcast channel decoding function means for decoding pilot channel information of the detected CDM signal, CAS information and EPG information, and a plurality of designated broadcast data channels using the information as a common input; A demultiplexer for demultiplexing the plurality of decoded broadcast data channels simultaneously; Logical channel data control unit for controlling the transmission of the demultiplexed channel data to a DMB terminal through a separate wired or wireless communication interface Multi-channel receiving device for satellite DMB service comprising a. The method of claim 1, The broadcast channel decoding function means for interlocking a receiver control unit to a pilot channel decoding channel ch0 for pilot channel decoding, and then controlling to decode all the channels requiring decoding using the receiver control unit. Multi-channel receiver for satellite DMB service. The method of claim 1, The DMB terminal, the multi-channel receiving apparatus for the satellite DMB service, characterized in that for selecting only the data of the specified channel from the broadcast data received through the wired and wireless communication interface and demodulated and output through the output means. In the channel receiving system for providing satellite DMB service using a DMB modem, A tuner for receiving a broadcast data channel transmitted through the satellite; A CDM demodulator for detecting a CDM signal in the received broadcast data channel; A broadcast channel decoding function for applying a receiver control unit to each of a plurality of DMB modems and decoding pilot channel information, CAS information and EPG information, and a plurality of designated broadcast data channels using the information as a common input to the detected CDM signal. Sudan, A demultiplexer for demultiplexing the plurality of decoded broadcast data channels simultaneously; Logical channel data control unit for controlling the transmission of the demultiplexed channel data to a DMB terminal through a separate wired or wireless communication interface Multi-channel receiving device for satellite DMB service comprising a. The method of claim 4, wherein The broadcast channel decoding function means configures the DMB modem so that all of the receiver controllers are linked to each of the pilot channel decoding channels ch0 for pilot channel decoding, and then decodes all the channels requiring decoding using the receiver controller. Multi-channel receiving device for satellite DMB service, characterized in that the control to enable. The method of claim 4, wherein The DMB terminal, the multi-channel receiving apparatus for the satellite DMB service, characterized in that for selecting only the data of the specified channel from the broadcast data received through the wired and wireless communication interface and demodulates through the output means. In the channel receiving system for providing satellite DMB service using a DMB modem, A tuner for receiving a broadcast data channel transmitted through the satellite; A CDM demodulator for detecting a CDM signal in the received broadcast data channel; A receiver control unit is applied to the DCD modem of a plurality of DMB modems to decode a plurality of broadcast data channels designated by using pilot channel information, CAS information and EPG information, and the information as a common input to the detected CDM signal. Broadcast channel decoding function means, A demultiplexer for demultiplexing the plurality of decoded broadcast data channels simultaneously; Logical channel data control unit for controlling the transmission of the demultiplexed channel data to a DMB terminal through a separate wired or wireless communication interface Multi-channel receiving device for satellite DMB service comprising a. The method of claim 7, wherein The broadcast channel decoding function means configures the arbitrary DMB modem to interwork with a receiver control unit in a pilot channel decoding channel ch0 for pilot channel decoding, and then decodes all the channels requiring decoding using the receiver control unit. Multi-channel receiving device for satellite DMB service, characterized in that the control to enable. The method of claim 7, wherein The DMB terminal, the multi-channel receiving apparatus for the satellite DMB service, characterized in that for selecting only the data of the specified channel from the broadcast data received through the wired and wireless communication interface and demodulates through the output means. In the channel receiving system for providing a satellite DMB service, A tuner for receiving a broadcast data channel transmitted through the satellite; A CDM demodulator for detecting a CDM signal in the received broadcast data channel; Broadcast channel decoding function means for decoding pilot channel information of the detected CDM signal, CAS information and EPG information, and a plurality of designated broadcast data channels using these information as common inputs; A demultiplexer for demultiplexing all of the plurality of decoded broadcast channels simultaneously; A logical channel data control unit for decoding the demultiplexed broadcast data of the multiplexed channel into a decoder and then transmitting and controlling the demultiplexed broadcast data to a DMB terminal through a separate wired / wireless communication interface. Multi-channel receiving device for satellite DMB service comprising a. delete

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