KR100712824B1 - Multiplex output broadcasting receive system using CASconditional access system of single set-top box - Google Patents

Abstract

The present invention connects one set-top box and a plurality of TV receivers respectively installed in various places through a network (RF line) already installed in a home or a specific place, and combines IR technology of the remote control and the TV in the RF line by incorporating filter technology. By allowing RF A / V signals to coexist and decrypting multiple different encrypted channels using a single authentication card, users can independently set up each remote location through a single set-top box. The present invention relates to a multi-output broadcasting reception system using a reception limitation function of a single set-top box that enables a user to watch TV and enables remote control of the set-top box through a remote control in another place where the set-top box is not installed. According to the company, receiving multiple TVs in each of the spaces connected to a single set-top box using only one authentication card The broadcasting viewing becomes possible with, a separate track construction and expensive RF (UHF) remote control transmitter is effective purchase the missing need for a set-top box remote control at each spaced apart support.

Digital Broadcasting Receiver, Set Top Box, TV Receiver, Filter Technology, LPF, HPF, RF Modulator, Coaxial Cable, Reception Limiter, CAS (Conditional Access System)

Description

Multiple output broadcasting receive system using conditional access system (CAS) of single set-top box}

1 is a functional block diagram showing a configuration of a multiple output broadcast reception system using a reception limitation function of a single set top box according to an embodiment of the present invention;

FIG. 2A is a functional block diagram illustrating an internal configuration of a reception restriction module in a multiple output broadcast reception system using a reception limitation function of a single set top box according to FIG. 1; FIG.

FIG. 2B is a functional block diagram illustrating an internal configuration of a second broadcast reception processing module in a multiple output broadcast reception system using a reception limitation function of a single set top box according to FIG. 1;

3A is a diagram illustrating a broadcasting channel frequency used as a carrier frequency in order to transmit a broadcast signal through a network in a multiple output broadcast reception system using a reception limit function of a single set top box according to an embodiment of the present invention;

3B is a diagram illustrating a process of transmitting a broadcast signal using a specific broadcast channel frequency in a multiple output broadcast reception system using a reception limit function of a single set top box according to an embodiment of the present invention;

3C is a diagram illustrating a process of transmitting a broadcast signal using an intermediate frequency avoiding a broadcast channel frequency in a multiple output broadcast reception system using a reception limit function of a single set top box according to an embodiment of the present invention;

4 is a diagram illustrating a process of transmitting a set-top box control signal using frequency shift keying (FSK) modulation in a multiple output broadcast reception system using a reception limit function of a single set-top box according to an embodiment of the present invention;

5 is a functional block diagram illustrating a configuration of a multiple output broadcast reception system using a reception limit function of a single set top box according to a second embodiment of the present invention.

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

100: set-top box 110: reception restriction module

111: reception limit module control unit 112: FIFO memory

115: first broadcast receiving processing module 116: first TV receiver

120: second broadcast receiving processing module 121: broadcast signal receiving unit

122: MPEG decoding processor 123: broadcast signal modulator

124: amplifier 125: remote control signal extraction unit

126: second broadcast receiving processing module control unit 127: descrambler

130: host network connection unit 131: first filter

132: second filter 136: FSK demodulation unit

140: authentication card 150: remote control signal receiving unit

160: guest network connection unit 161: third filter

162: fourth filter 165: modulator

166: FSK modulator 170: second TV receiver

180: wireless remote control 190: network

200: set top box 210: reception restriction module

215: first broadcast receiving processing module 216: first TV receiver

220: second broadcast receiving processing module 230: host network connection

231: first filter 232: second filter

240: authentication card 250: remote control signal receiving unit

260: guest network connection 261: third filter

262: fourth filter 270: second TV receiver

280: wireless remote control 290: network

The present invention relates to a multiple output broadcast reception system using the reception limit function of a single set-top box, and more particularly, a plurality of set-top boxes and a plurality of places each installed in a home through a network consisting of TV RF lines already installed in a building. Connect two TV receivers, and combine filter technology so that IR data of the remote control and TV RF A / V signals can coexist within the RF line, and multiple different encrypted channels can be used with one authentication card. By allowing passwords to be decrypted, users can watch TV separately from each remote location via a single set-top box. In addition, the present invention relates to a multiple output broadcast reception system using a reception limit function of a single set top box that enables remote control of the set top box through a remote control in another place where the set top box is not installed.

In recent years, with the rapid development of digital technologies such as digital image compression and digital modulation / demodulation, standardization and commercialization of digital television (TV) broadcasting is rapidly progressing. In such a situation, a digital broadcast receiver such as a set top box (STB) that receives digital television broadcasts uses an original A / V (Audio / Video) by using a decoder provided in a receiver for a broadcast program selected by a user. After restoring the data, it is transmitted to an A / V output device such as a general TV, so that a user can selectively watch a broadcast program.

In addition, in recent years, most homes have one TV set in various places such as a home room, a living room, a study room, and the like. In the case of connecting these TVs to one set-top box, satellite TV, There is an advantage that you can watch cable broadcasting, digital terrestrial broadcasting.

However, the conventional method of connecting one set-top box to multiple TVs is not only difficult to transmit lossless signals from the set-top box to each room, but also requires additional line construction through track work in the home, thereby increasing installation costs. And there was a problem that the difficulty of the installation process occurs.

In addition, according to the conventional method of connecting one set-top box to multiple TVs, if you want to remotely control the set-top box from another place where the set-top box is not installed, purchase an expensive RF (UHF) remote control transceiver separately. Since it has to be installed, there is a problem that the inconvenience of redundant installation with the occurrence of cost duplication.

In addition, when one set-top box is to be provided for each TV, there is a problem that an authentication card must be provided for each set-top box in order to solve encryption of a broadcast channel.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to connect one set-top box and a plurality of TV receivers each installed at various places in the home through a TV RF line already installed in the home. By combining the filter technology, the IR data of the remote control and the TV RF A / V signal can coexist within a single RF line, and a plurality of different channels can be decrypted using one authentication card. This allows users to watch TV in each room independently through a single set-top box, while at the same time allowing remote control of the set-top box via remote control in other places where no set-top box is installed. The present invention provides a multi-output broadcasting reception system using a reception limitation function of a set-top box.

In order to achieve the above object, a multiple output broadcast reception system using a reception limit function of a single set top box according to an embodiment of the present invention selects a channel of a broadcast signal received from an external transmission medium according to a user's input operation. And a first broadcast receiving processing module for outputting the A / V broadcast signal of the selected channel, and selecting a channel of the broadcast signal received from an external transmission medium according to receiving a remote control signal, and then A / V broadcasting of the selected channel. A plurality of second broadcast receiving processing modules for modulating and outputting a signal (hereinafter referred to as an 'A / V remote broadcasting signal') at a predetermined broadcast frequency, and the first broadcast receiving processing module or the plurality of second broadcast receiving processing When the program identifier is input from the module, the key value corresponding to the program identifier is read from the authentication card to receive the first broadcast reception processing module or the corresponding second broadcast reception. A set top box having a reception limiting module for outputting to a processing module;

A first filter for filtering the set-top box control signal through a specific network and filtering the set-top box control signal to provide the remote control signal to a second broadcast receiving processing module connected to the second broadcast receiving processing module; A second filter for filtering and passing the A / V remote broadcasting signal through the connected second broadcast receiving processing module to pass through the network, respectively, one to be connected to each of the plurality of second broadcast receiving processing module one by one More host network connections;

A plurality of remote control signal receivers for detecting and outputting a set top box control signal transmitted from a wireless remote controller; And

A plurality of filters including a third filter for filtering the set-top box control signal from the remote control signal receiver and filtering the set-top box control signal, and a fourth filter for filtering and passing the A / V remote broadcasting signal provided from the network; Guest network connection; is configured to include.

In order to achieve the above object, the multiple output broadcast reception system using the reception limit function of the single set-top box according to the second embodiment of the present invention provides a channel of a broadcast signal received from an external transmission medium according to a user's input operation. A first broadcast receiving processing module which selects and outputs an A / V broadcast signal of the selected channel, and a channel of a broadcast signal received from an external transmission medium in response to receiving a remote control signal, and then selects an A / V of the selected channel. A plurality of second broadcast reception processing modules for modulating and outputting a broadcast signal (hereinafter referred to as an 'A / V remote broadcast signal') at a predetermined broadcast frequency; and the first broadcast reception processing module or the plurality of second broadcast receptions. When the program identifier is input from the processing module, the key value corresponding to the program identifier is read from the authentication card, and the first broadcast receiving processing module or the corresponding second broadcast number is read. The set-top box having a conditional access module for outputting to the processing module;

A plurality of remote control signal receivers for detecting a set-top box control signal transmitted from a wireless remote controller and outputting the control signal to the network; And

And a plurality of guest network connections including a fourth filter for filtering and passing the A / V telecast signal provided from the network.

Hereinafter, a multiple output broadcast reception system using a reception limitation function of a single set top box according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a functional block diagram illustrating a configuration of a multiple output broadcast reception system using a reception limitation function of a single set top box according to an embodiment of the present invention.

Hereinafter, in order to simplify the description of the present invention, a detailed description of general known functions and configurations of the set-top box 100 that may unnecessarily obscure the subject matter of the present invention will be omitted.

In the multiple output broadcast reception system using the reception limit function of a single set-top box according to an embodiment of the present invention, as shown in FIG. 1, the reception limit module 110 and the first broadcast reception processing module 115 and a plurality of It is composed of a set-top box 100 having a second broadcast receiving processing module 120, at least one host network connection unit 130, a plurality of remote control signal receiving unit 150 and a plurality of guest network connection unit (160). In this case, as shown in FIG. 1, the host network connection unit 130 may be provided in the same number as the second broadcast reception processing module 120 so as to correspond to the second broadcast reception processing module 120 correspondingly. Alternatively, only one host network connection unit 130 is provided, and the signals output from each of the second broadcast reception processing modules 120 are mixed and output to the second filter 132 of the host network connection unit 130. It may be configured to output the signal provided from the first filter 131 to each of the second broadcast receiving processing module 120.

When the reception restriction module 110 receives a program identifier from the first broadcast reception processing module 115 or the second broadcast reception processing module 120, the key value corresponding to the program identifier from the authentication card 140 is received. It reads and outputs to the corresponding second broadcast reception processing module 120, which is composed of a reception restriction module control unit 111 and a FIFO memory 112 as shown in Figure 2a.

FIG. 2A is a functional block diagram illustrating an internal configuration of a reception restriction module in a multiple output broadcast reception system using a reception limitation function of a single set top box according to FIG. 1.

The reception restriction module control unit 111 receives a program identifier from the first broadcast reception processing module 115 or the second broadcast reception processing module 120, stores the program identifier in the FIFO memory 112, and stores the program identifier in the FIFO memory 112. The key value corresponding to the program identifier stored in the first) is read from the authentication card 140 and output to the first broadcast reception processing module 115 or the second broadcast reception processing module 120. The FIFO memory 112 plays a role of first exporting the stored contents according to an external request.

The first broadcast receiving processing module 115 selects a channel of a broadcast signal received from an external transmission medium according to a user's input operation and outputs an A / V broadcast signal of the selected channel. In this case, after extracting a program identifier from the broadcast signal received from the external transmission medium and outputting the program identifier to the reception limiting module 110, if a key value is provided from the reception limiting module 110, the received broadcast signal is received using the key value. Descramble Then, the descrambled broadcast signal is decoded, D / A converted, and then converted into an A / V broadcast signal to be output to the first TV receiver 116.

The second broadcast receiving processing module 120 selects a channel of a broadcast signal received from an external transmission medium as a remote control signal is provided, and A / V broadcast signal of the selected channel (hereinafter, 'A / V remote). Broadcast signal '), which is modulated and output at a predetermined broadcast frequency, as shown in FIG. 2B, which includes a broadcast signal receiver 121, an MPEG decoding processor 122, a broadcast signal modulator 123, and an amplifier. 124, a remote control signal extracting unit 125, a second broadcast receiving processing module control unit 126, and a descrambler 127.

FIG. 2B is a functional block diagram illustrating an internal configuration of the second broadcast reception processing module in the multiple output broadcast reception system using the reception limitation function of the single set top box according to FIG. 1.

The broadcast signal receiver 121 receives a broadcast signal from an external transmission medium and outputs the broadcast signal to the MPEG decoding processor 122. The MPEG decoding processor 122 decodes the received broadcast signal and converts it to D / A. It plays a role.

The broadcast signal modulator 123 receives the broadcast signal from the MPEG decoding processor 122, modulates the broadcast signal to a predetermined broadcast frequency, and outputs the modulated signal to the second filter 132. Extracts the remote control signal provided from the first filter 131 and outputs it.

The second broadcast receiving processing module controller 126 extracts a program identifier from the digital broadcast signal received from the broadcast signal receiving unit 121, outputs the program identifier to the receiving limit module 110, and then outputs a key value from the receiving limit module 110. It is provided with, and serves to set the broadcast channel of the broadcast signal receiving unit according to the remote control signal received from the remote control signal extraction unit 125. In addition, the second broadcast receiving processing module control unit 126 has processing functions of system setting, menu setting, PVR (Personal Video Recoreder) control, and EPG (Electronic Program Guide) control according to the remote control signal.

When the descrambler 127 receives a key value from the second broadcast receiving processing module controller 125, the descrambler 127 receives a broadcast signal from the broadcast signal receiver 121 to descramble the broadcast signal to decode the broadcast signal. 122).

In this case, an amplifier 124 may be installed at the end of the broadcast signal modulator 123 to compensate for the loss of the A / V remote broadcast signal according to the line distance.

Here, the plurality of second broadcast receiving processing modules 120 may be implemented by one chipset, or may be implemented by a separate chipset.

When the host network connection unit 130 receives the set-top box control signal through a specific network 190, the host network connection unit 130 filters the set-top box control signal to the second broadcast reception processing module 120 connected to itself among the plurality of second broadcast reception processing modules. When the A / V remote broadcasting signal is received through the first filter 131 for providing a remote control signal and the second broadcast receiving processing module 120 connected thereto, the A / V remote broadcasting signal is filtered and passed through the network 190. The second filter 132 is provided.

The remote control signal receiver 150 detects and outputs a set-top box control signal transmitted from the wireless remote controller 180.

In addition, the guest network connection unit 160 receives the set-top box control signal from the remote control signal receiving unit 150 and filters it to pass through the network 190 to the third filter 161 and from the network 190. And a fourth filter 162 for filtering and passing the provided A / V telecast signal.

In this case, in general, the first filter 131 and the third filter 161 are a low pass filter (LPF) covering the remote control control signal frequency band, and the second filter 132 and the fourth filter 162 are VHF. High-pass filter (HPF) covering the UHF frequency band.

The set top box 100 may be configured as a single set including one or more host network connection units 130 including a first filter 131 and a second filter 132. The guest network connection unit 160 having the 161 and the fourth filter 162 may be configured as a single set including the remote control signal receiver 150.

In addition, the network 190 generally refers to a pre-installed TV coaxial cable or a separately installed network cable.

Then, the operation of the multi-output broadcast reception system using the reception limit function of the single set-top box according to an embodiment of the present invention having the above configuration will be described with reference to FIGS. 1 and 2, but the set-top box 100 The host network connection unit 130 is installed in the living room, and the plurality of guest network connection units 160 are installed in other places (rooms, study rooms, etc.), and the host network connection unit 130 and the plurality of guest network connection units ( 160 will be described assuming that each is connected to the RF terminal installed on the wall through the coaxial cable.

First, the user inserts the authentication card 140 into the set-top box 100 to enable a user authentication by a conditional access system (CAS) 110.

Next, when the user of the remote location where the set-top box 100 is not installed describes an authentication process for watching a broadcast using the second TV receiver 170 as follows.

When the user of the remote location performs the remote control through the wireless remote controller 180, the corresponding remote control signal receiver 150 of the plurality of remote control signal receiver detects the set-top box control signal transmitted from the wireless remote controller 180 Output to the third filter 161 of the guest network connection unit 160 connected to itself, and the third filter 161 of the guest network connection unit 160 filters the set-top box control signal to the network 190. Pass it through.

Then, the first filter 131 of the host network connection unit 130 receives the set-top box control signal sent from the guest network connection unit 160 from the network 190 and filters the second broadcast signal connected to itself. Output to the reception processing module 120, the second broadcast reception processing module 120 is a signal that the set-top box control signal is filtered from the first filter 131 of the host network connection unit 130 (remote control signal) Get input. Then, the second broadcast receiving processing module 120 modulates the A / V remote broadcast signal received from the external transmission medium according to the remote control signal, and then the second filter 132 of the host network connection unit 130 connected to the second broadcast receiving processing module 120. ) In this case, in the process of converting a broadcast signal received from an external transmission medium into an A / V remote broadcast signal, if the broadcast signal is encrypted, a process of authenticating a user and decrypting the broadcast signal should be included. The user authentication process in the second broadcast receiving processing module 120 is as follows.

The broadcast signal receiving unit 121 of the second broadcast receiving processing module 120 receives a broadcast signal from an external transmission medium and outputs it to the second broadcast receiving processing module control unit 126 and the MPEG decoding processing unit 122. If the received broadcast signal is not encrypted for reception restriction, the MPEG decoding processing unit 122 may decode the broadcast signal and then output the D / A conversion process. However, when the received broadcast signal is encrypted, it is necessary to decode the broadcast signal after describing the broadcast signal using a key value for the corresponding broadcast program.

To this end, the second broadcast receiving processing module controller 126 receives a broadcast signal from the broadcast signal receiving unit 121, extracts a program identifier, and then outputs the program identifier to the reception limiting module (CAS) 110.

Then, the reception limiting module 110 stores the program identifier in the FIFO memory 112 to process the received program identifier in the order of first input. The reception limiting module 110 retrieves a matching key value by calling a program identifier first input from the FIFO memory 112 and checking the key value stored in the authentication card 140. At this time, a plurality of key values for user authentication for the corresponding program are stored in the authentication card. When the reception restriction module 110 finds a matching key value, the corresponding key value is output to the corresponding second broadcast reception module control unit 126, and the second broadcast reception module control unit 126 outputs the corresponding key value to the descrambler ( 127).

The descrambler 127 receives the broadcast signal from the broadcast signal receiving unit 121 and descrambles the broadcast signal using the corresponding key value received from the second broadcast receiving processing module control unit 126. A broadcast signal reconstructed as a broadcast signal before encryption is transmitted to the MPEG decoding processor 122 through the descramble process, and the MPEG decoding processor 122 performs a D / A conversion process after decoding the broadcast signal. Output to the broadcast signal modulator 123.

After the user authentication is performed in the second broadcast receiving processing module 120 through the above process, the broadcast signal modulator 123 modulates the A / V remote broadcast signal converted from the broadcast signal to a predetermined broadcast frequency. After that, it is output to the second filter 132.

Thereafter, the second filter 132 of the host network connection unit 130 receives the modulated A / V remote broadcasting signal through the second broadcast receiving processing module 120 and passes it to the network 190. In addition, the fourth filter 162 of the guest network connection unit 160 receives the A / V telecast signal and filters it and passes it through. Then, the second TV receiver 170 receives the A / V remote broadcasting signal and displays the broadcast of the corresponding program to the user.

In this case, in general, the first filter 131 and the third filter 161 are a low pass filter (LPF) covering the remote control control signal frequency band, and the second filter 132 and the fourth filter 162 are VHF / It is a high pass filter (HPF) covering the UHF frequency band.

3A is a diagram illustrating a broadcast channel frequency used as a carrier frequency in order to transmit a broadcast signal through a network in a multiple output broadcast reception system using a reception limit function of a single set top box according to an embodiment of the present invention.

As shown in FIG. 3A, in order to output the A / V telecast signal to the network 190 in the second broadcast receiving processing module 120, the A / V telecast signal is output from the broadcast signal modulator 123. Modulate and output to a specific broadcast channel frequency. A process of using a specific broadcast channel frequency such as FIG. 3A as a carrier frequency is shown in FIG. 3B.

3B is a diagram illustrating a process of transmitting a broadcast signal using a specific broadcast channel frequency in a multiple output broadcast reception system using a reception limit function of a single set top box according to an embodiment of the present invention.

3B, the broadcast signal modulator 123 modulates the A / V telecast signal to 474 MHz corresponding to channel 21 and outputs the same to the second filter 132. The A / V telecast signal modulated at 474 MHz is then transmitted to the fourth filter 162 via the network 190. In this case, if the fourth filter 162 is configured to filter and pass a signal corresponding to 474 MHz among the signals input from the network 190, the broadcast signal modulator 123 modulates the channel 21 to 474 MHz according to the channel 21. Pass the output A / V remote broadcasting signal. Accordingly, the second TV receiver 170 may display the A / V broadcast signal modulated by the broadcast signal modulator 123.

On the other hand, the broadcast signal modulator 123 may use an intermediate frequency that avoids the broadcast channel frequency as a carrier frequency. This is conceptually illustrated in FIG. 3C.

3C is a diagram illustrating a process of transmitting a broadcast signal using an intermediate frequency avoiding a broadcast channel frequency in a multiple output broadcast reception system using a reception limit function of a single set top box according to an embodiment of the present invention.

3C, the broadcast signal modulator 123 modulates the A / V remote broadcast signal to 478 MHz corresponding to the intermediate frequency of channels 21 and 22 shown in FIG. Output to the filter 132. The A / V telecast signal modulated at 478 MHz is then transmitted to the fourth filter 162 via the network 190. In this case, if the fourth filter 162 is configured to filter and pass a signal corresponding to 478 MHz among the signals input from the network 190, the broadcast signal modulator 123 modulates the channel to 478 MHz to fit the channel 21. Pass the output A / V remote broadcasting signal.

In this case, since the second TV receiver 170 is manufactured according to the existing broadcasting channel frequency, the second TV receiver 170 should be modulated into a signal corresponding to the channel 21. Thus, by placing the modulator 165 between the fourth filter 162 and the second TV receiver 170, the modulator 165 is filtered by the fourth filter 162 and passed through 478 MHz. It remodulates A / V remote broadcasting signal to 474 MHz corresponding to channel 21. Accordingly, the second TV receiver 170 may display the A / V broadcast signal modulated by the broadcast signal modulator 123.

4 is a diagram illustrating a process of transmitting a set-top box control signal using frequency shift keying (FSK) modulation in a multiple output broadcast reception system using a reception limit function of a single set-top box according to an embodiment of the present invention. .

The guest network connection unit 160 may be configured to output an FSK (Frequency Shift Keying) modulated signal when the set top box control signal is received from the remote control signal receiver 150. That is, the apparatus further includes an FSK modulator 166 that performs FSK modulation to pass the FSK modulated set-top box control signal to the network 190.

Then, the host network connection unit 130 receives the FSK modulated remote control signal. Next, the FSK demodulation unit 136 performs FSK demodulation to restore the original remote control signal, and then outputs the remote control signal to the remote control signal extraction unit 125 of the second broadcast reception processing module 120 to transmit the remote control signal. Done.

5 is a functional block diagram illustrating a configuration of a multiple output broadcast reception system using a reception limit function of a single set top box according to a second embodiment of the present invention.

While the embodiment shown in FIG. 1 includes all of the first filter 131 to the fourth filter 162, the second embodiment shown in FIG. 5 has the remaining filters except for the fourth filter 262. Characterized in that may optionally be included in the component.

The minimum configuration of the multiple output broadcast reception system using the reception limitation function of the single set-top box according to the second embodiment of the present invention shown in FIG. 5 is the reception restriction module 210 and the first broadcast reception processing module 215. And a set top box 200 having a plurality of second broadcast receiving processing modules 220, a plurality of remote control signal receivers 250, and a plurality of guest network connectors 260.

When the reception restriction module 210 receives a program identifier from the first broadcast reception processing module 215 or each second broadcast reception processing module 220, the reception restriction module 210 reads a key value corresponding to the program identifier from the authentication card 240 to display the first broadcast. It outputs to the reception processing module 215 or the corresponding second broadcast reception processing module 220. At this time, the configuration of the reception restriction module 210 is the same as the configuration of the reception restriction module 110 in the above-described embodiment.

The first broadcast receiving processing module 215 selects a channel of a broadcast signal received from an external transmission medium according to a user's input operation and outputs an A / V broadcast signal of the selected channel. In this case, after extracting a program identifier from the broadcast signal received from the external transmission medium and outputting the program identifier to the reception limiting module 210, if a key value is provided from the reception limiting module 210, the received broadcast signal is received using the key value. Descramble Then, the descrambled broadcast signal is decoded, D / A converted, and then converted into an A / V broadcast signal to be output to the first TV receiver 216.

The second broadcast receiving processing module 220 selects a channel of a broadcast signal received from an external transmission medium as a remote control signal is provided, and A / V broadcast signal of the selected channel (hereinafter, 'A / V remote broadcast'). Signal ') to a predetermined broadcast frequency and outputs a broadcast signal receiver, MPEG decoding processor, broadcast signal modulator, amplifier, remote control signal extractor, second broadcast receiver module controller and descrambler. Consists of.

The broadcast signal receiver receives a broadcast signal from an external transmission medium and outputs the broadcast signal to the MPEG decoding processor, and the MPEG decoding processor decodes the received broadcast signal and performs a D / A conversion process.

The broadcast signal modulator receives the broadcast signal from the MPEG decoding processor and modulates the broadcast signal to a predetermined broadcast frequency and outputs the signal to the network or the second filter 232, and the remote control signal extractor extracts the network or the first filter 231. It extracts the remote control signal provided from) and outputs it.

The second broadcast receiving processing module controller extracts a program identifier from the digital broadcast signal received from the broadcast signal receiving unit, outputs the program identifier to the occasional limiting module 210, and receives a key value from the receiving limiting module 210. It sets a broadcast channel of the broadcast signal receiver according to the remote control signal received from the remote control signal extractor. In addition, the second broadcast receiving processing module control unit has a processing function of system setting, menu setting, PVR (Personal Video Recoreder) control, and EPG (Electronic Program Guide) control according to the remote control signal.

When the descrambler receives a key value from the second broadcast receiving processing module controller, the descrambler receives a broadcast signal from the broadcast signal receiver and descrambles the broadcast signal and outputs the descrambled signal to the MPEG decoding processor.

In this case, an amplifier may be installed at the end of the broadcast signal modulator to compensate for the loss of the A / V remote broadcast signal according to the line distance.

Here, the plurality of second broadcast receiving processing modules 220 may be implemented by one chipset, or may be implemented by a separate separate chipset.

The remote control signal receiver 250 detects the set-top box control signal transmitted from the wireless remote controller 280 and outputs the signal to the network 290.

In addition, the guest network connection unit 260 includes a fourth filter 262 which filters and passes the A / V remote broadcasting signal provided from the network 290. In this case, the fourth filter 262 is a high pass filter (HPF) covering the VHF / UHF frequency band.

In addition, the network 290 generally refers to a pre-installed TV coaxial cable or a separately installed network cable.

In this case, the guest network connection unit 260 may further include a third filter 261 for filtering the set-top box control signal from the remote control signal receiving unit 250 and passing it to the network 290. The rest of the configuration is the same as the embodiment shown in FIG. In this case, the third filter 261 is a low pass filter (LPF) covering the remote control control signal frequency band, and the fourth filter 262 is a high pass filter (HPF) covering the VHF / UHF frequency band.

In addition, when the A / V remote broadcasting signal is received through the second broadcast receiving processing module 220 connected to the second broadcast receiving processing module, the second filter 232 for filtering and passing it to the network 290. The host network connection unit 230 having) may be additionally installed, and other configurations are the same as those of the embodiment shown in FIG. In this case, the third filter 261 is a low pass filter (LPF) covering the remote control control signal frequency band, the second filter 232 and the fourth filter 262 is a high pass filter covering the VHF / UHF frequency band (HPF).

In addition, when the host network connection unit 230 receives the set-top box control signal through the network 290, the host network connection unit 230 filters the set-top box control signal to the second broadcast reception processing module 220 connected to the second broadcast reception processing module. It may further include a first filter 231 for providing a remote control signal, the other configuration is the same as the embodiment shown in FIG. In this case, the first filter 231 and the third filter 261 are a low pass filter (LPF) covering a remote control control signal frequency band, and the second filter 232 and the fourth filter 262 are VHF / UHF. It is a high pass filter (HPF) covering the frequency band.

In the multiple output broadcast reception system using the reception limit function of the single set-top box according to the second embodiment of the present invention, the A / V remote broadcast output from the broadcast signal modulator in the second broadcast reception processing module 220. The signal may be set to a specific broadcast channel frequency. In addition, the A / V remote broadcast signal output from the broadcast signal modulator in the second broadcast receiving processing module 220 is set to an intermediate frequency (Intermediate Frequency) avoiding the broadcast channel frequency, the guest network connection unit is the intermediate The apparatus may further include a modulator for remodulating and outputting the frequency signal to a specific broadcasting channel frequency. The operation process for this is the same as the operation process of the multiple output broadcast reception system using the reception limit function of the single set-top box according to the embodiment of the present invention shown in FIG.

In the multiple output broadcast reception system using the reception limit function of the single set top box according to the second embodiment of the present invention, the guest network connection unit 260 receives the set top box control signal from the remote control signal receiver 250. The FSK modulator may further include an FSK modulator for modulating and outputting an FSK (Frequency Shift Keying) modulator, and the host network connection unit 230 may further include an FSK demodulator for demodulating and outputting the FSK modulated remote control signal. . The operation process for this is the same as the operation process of the multi-output broadcast reception system using the reception limit function of the single set-top box according to the embodiment of the present invention shown in FIG.

Although the present invention has been described in more detail with reference to several embodiments, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention.

As described above, according to the multiple output broadcast reception system using the reception limitation function of a single set-top box according to the present invention, each TV is installed in one set-top box and several places in the home through a TV RF line composed of a network already installed in the home and building. Connect multiple installed TV receivers, combine filter technology to realize coexistence of IR data and TV RF A / V signals of the remote control within a single RF line, and multiple encrypted channels with one authentication card It is possible to solve the password using a single set-top box, it is possible to watch broadcast through multiple TV receivers in each space with only one set-top box, and do not need to have multiple authentication cards, remote control of the set-top box at each space There is no need to purchase a separate line for the construction and expensive RF (UHF) remote control transceiver purchase.

Claims (26)

A first broadcast receiving processing module which selects a channel of a broadcast signal received from an external transmission medium according to a user's input operation and outputs an A / V broadcast signal of the selected channel, and an external transmission medium as a remote control signal is provided; A plurality of second broadcast receiving processing modules for selecting a channel of a broadcast signal received from the channel and modulating and outputting an A / V broadcast signal (hereinafter referred to as an 'A / V remote broadcast signal') of the selected channel at a predetermined broadcast frequency; And receiving a key value corresponding to the program identifier from an authentication card when receiving a program identifier from the first broadcast receiving processing module or the plurality of second broadcast receiving processing modules, and receiving the first broadcast receiving processing module or the corresponding second broadcast receiving process. A set top box having a reception limiting module for outputting to a processing module; A first filter for filtering the set-top box control signal through a specific network and filtering the set-top box control signal to provide the remote control signal to a second broadcast receiving processing module connected to the second broadcast receiving processing module; A second filter for filtering and passing the A / V remote broadcasting signal through the connected second broadcast receiving processing module to pass through the network, respectively, one to be connected to each of the plurality of second broadcast receiving processing module one by one More host network connections; A plurality of remote control signal receivers for detecting and outputting a set top box control signal transmitted from a wireless remote controller; And A plurality of filters including a third filter for filtering the set-top box control signal from the remote control signal receiver and filtering the set-top box control signal, and a fourth filter for filtering and passing the A / V remote broadcasting signal provided from the network; Guest network connection; Multiple output broadcast receiving system using the reception limit function of a single set-top box configured to include. The method of claim 1, The plurality of second broadcast receiving processing modules may include: a broadcast signal receiving unit receiving a broadcast signal from an external transmission medium and outputting a digital broadcast signal; An MPEG decoding processing unit which receives a digital broadcasting signal from the broadcasting signal receiving unit, decodes the digital broadcasting signal, and then performs D / A conversion processing; A broadcast signal modulator which receives a broadcast signal from the MPEG decoding processor and modulates the broadcast signal to a predetermined broadcast frequency and then outputs it to the second filter; A remote control signal extracting unit for extracting a remote control signal provided from the first filter and outputting the remote control signal; After extracting a program identifier from the digital broadcast signal received from the broadcast signal receiving unit and outputting the program identifier to the reception limiting module and receiving a key value from the reception limiting module, the remote control signal received from the remote control signal extracting unit A second broadcast receiving processing module controller configured to set a broadcast channel of the broadcast signal receiving unit; And And a descrambler which receives a broadcast signal from the broadcast signal receiver and descrambles the broadcast signal and outputs the broadcast signal to the MPEG decoding processor when the key value is received from the second broadcast receiving processing module controller. Multiple output broadcast reception system using the reception limit function of a single set top box. The method of claim 2, The plurality of second broadcast receiving processing modules further include an amplifier for compensating for the loss of the A / V remote broadcasting signal according to the line distance. The method of claim 3, The second broadcast receiving processing module control unit receives a single set-top box according to a remote control signal, including system setting, menu setting, PVR (Personal Video Recorder) control, and EPG (Electronic Program Guide) control. Multiple output broadcast reception system using limit function. The method according to any one of claims 1 to 4, The first filter and the third filter are a low pass filter (LPF) covering the remote control control signal frequency band, the second filter and the fourth filter is a high pass filter (HPF) covering the VHF / UHF frequency band, characterized in that Multiple output broadcast reception system using the reception limit function of a single set-top box. The method of claim 5, The set top box is a multiple output broadcast reception system using a reception limit function of a single set top box, characterized in that consisting of a single set including at least one host network connection unit having a first filter and a second filter. The method of claim 5, And a guest network connection unit including the third filter and the fourth filter comprises a single set including the remote control signal receiver. The method according to any one of claims 2 to 4, The A / V remote broadcast signal output from the broadcast signal modulators in the plurality of second broadcast receiving processing modules is set to a specific broadcast channel frequency. Multiple output broadcasting using a reception limit function of a single set-top box. Receiving system. The method according to any one of claims 2 to 4, The A / V remote broadcast signal output from the broadcast signal modulators in the plurality of second broadcast receiving processing modules is set to an intermediate frequency avoiding a broadcast channel frequency, and the plurality of guest network connection units are provided in the intermediate frequency. And a modulator for remodulating and outputting a frequency signal to a specific broadcast channel frequency. The method according to any one of claims 2 to 4, The guest network connection unit may further include an FSK modulation unit configured to output a frequency shift keying (FSK) modulated signal when the set top box control signal is received from the remote control signal receiving unit, and the host network connection unit provides the FSK modulated remote control signal. And a multi-output broadcast reception system using a reception limit function of a single set-top box, characterized in that it further comprises an FSK demodulator for outputting the FSK demodulated when received. The method of claim 5, The network is a multiple output broadcast reception system using the reception restriction function of a single set-top box, characterized in that the TV coaxial cable or a separately installed network cable. A first broadcast receiving processing module which selects a channel of a broadcast signal received from an external transmission medium according to a user's input operation and outputs an A / V broadcast signal of the selected channel, and an external transmission medium as a remote control signal is provided; A plurality of second broadcast receiving processing modules for selecting a channel of a broadcast signal received from the channel and modulating and outputting an A / V broadcast signal (hereinafter referred to as an 'A / V remote broadcast signal') of the selected channel at a predetermined broadcast frequency; And receiving a key value corresponding to the program identifier from an authentication card when receiving a program identifier from the first broadcast receiving processing module or the plurality of second broadcast receiving processing modules, and receiving the first broadcast receiving processing module or the corresponding second broadcast receiving process. A set top box having a reception limiting module for outputting to a processing module; A plurality of remote control signal receivers for detecting a set-top box control signal transmitted from a wireless remote controller and outputting the control signal to the network; And And a plurality of guest network connection units having a fourth filter for filtering and passing the A / V remote broadcasting signal provided from the network. The method of claim 12, And the fourth filter is a high pass filter (HPF) that covers the VHF / UHF frequency band. The method of claim 12, The plurality of guest network connection units may further include a third filter for filtering the set-top box control signal when the set-top box control signal is received from the remote control signal receiver and passing the filtered signal to the network. Broadcast receiving system. The method of claim 14, The third filter is a low pass filter (LPF) covering a remote control control signal frequency band, and the fourth filter is a high pass filter (HPF) covering a VHF / UHF frequency band, the reception limit function of a single set-top box Multi-output broadcast receiving system using a. The method of claim 14, Single set-top, characterized in that at least one host network connection is provided with a second filter for filtering and passing the A / V remote broadcast signal through the plurality of second broadcast receiving processing module to the network. Multi-output broadcast reception system using the box reception limit function. The method of claim 16, The third filter is a low pass filter (LPF) covering the remote control control signal frequency band, the second filter and the fourth filter is a single set-top box, characterized in that the high pass filter (HPF) covering the VHF / UHF frequency band Multiple output broadcast reception system using the reception restriction function of the. The method of claim 16 The at least one host network connection unit may further include a first filter for filtering the set-top box control signal through the network and providing the remote control signal to the plurality of second broadcast receiving processing modules. Multi-output broadcasting reception system using reception limit function of set-top box. The method of claim 18, The first filter and the third filter are a low pass filter (LPF) covering a remote control control signal frequency band, and the second filter and the fourth filter is a high pass filter (HPF) covering a VHF / UHF frequency band. Multiple output broadcast reception system using the reception limit function of a single set-top box. The method according to any one of claims 12 to 19, The plurality of second broadcast receiving processing modules may include: a broadcast signal receiving unit receiving a broadcast signal from an external transmission medium and outputting a digital broadcast signal; An MPEG decoding processing unit which receives a digital broadcasting signal from the broadcasting signal receiving unit, decodes the digital broadcasting signal, and then performs D / A conversion processing; A broadcast signal modulator for receiving a broadcast signal from the MPEG decoding processor and modulating the broadcast signal to a predetermined broadcast frequency and outputting the broadcast signal to the network or the second filter; A remote control signal extraction unit for extracting a remote control signal provided from the network or the first filter and outputting the remote control signal; After extracting a program identifier from the digital broadcast signal received from the broadcast signal receiving unit and outputting the program identifier to the reception limiting module and receiving a key value from the reception limiting module, the remote control signal received from the remote control signal extracting unit A second broadcast receiving processing module controller configured to set a broadcast channel of the broadcast signal receiving unit; And And a descrambler which receives a broadcast signal from the broadcast signal receiver and descrambles the broadcast signal and outputs the broadcast signal to the MPEG decoding processor when the key value is received from the second broadcast receiving processing module controller. Multiple output broadcast reception system using the reception limit function of a single set top box. The method of claim 20, The plurality of second broadcast receiving processing modules further include an amplifier for compensating for the loss of the A / V remote broadcasting signal according to the line distance. The method of claim 21, The second broadcast receiving processing module control unit receives a single set-top box according to a remote control signal, including system setting, menu setting, PVR (Personal Video Recorder) control, and EPG (Electronic Program Guide) control. Multiple output broadcast reception system using limit function. The method of claim 21, The A / V remote broadcast signal output from the broadcast signal modulators in the plurality of second broadcast receiving processing modules is set to a specific broadcast channel frequency. system. The method of claim 21, The A / V remote broadcast signal output from the broadcast signal modulator in the second broadcast receiving processing module is set to an intermediate frequency avoiding a broadcast channel frequency, and the guest network connection part specifies the intermediate frequency signal. The multiple output broadcast receiving system using the reception limit function of the single set-top box, characterized in that it further comprises a modulator for remodulating and outputting the broadcast channel frequency. The method of claim 21, The guest network connection unit may further include an FSK modulation unit configured to output a frequency shift keying (FSK) modulated signal when the set top box control signal is received from the remote control signal receiving unit, and the host network connection unit provides the FSK modulated remote control signal. And a multi-output broadcast reception system using a reception limit function of a single set-top box, characterized in that it further comprises an FSK demodulator for outputting the FSK demodulated when received. The method of claim 21, The network is a multiple output broadcast reception system using the reception restriction function of a single set-top box, characterized in that the TV coaxial cable or a separately installed network cable.

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