KR102231329B1 - Frequency bandwidth dividing and combining apparatus for catv signal and catv signal processing method using the same - Google Patents

Abstract

The present invention relates to a CATV signal frequency band separation and combination apparatus and a CATV signal processing method using the same. The CATV signal frequency band separation and combination apparatus includes: an input part receiving an analog signal transmitted from a headend through a cable network; a control part detecting a pilot signal by dividing the received analog signal, and then, switching the received analog signal to each different filter unit depending on whether the pilot signal is detected; and a plurality of filter units having different pass bands. Each of the filter units includes a filter part amplifying a CATV broadcast signal of the received analog signal by transmitting the same to an amplifier and bypassing a multimedia service signal, and outputting the amplified CATV broadcast signal and the bypassed multimedia service signal by combining the signals; an output part receiving a signal from the filter part to transmit the same to an external device; and a power supply part receiving power from an external power source to supply a driving voltage necessary for each of the components. Therefore, the present invention is capable of providing various multimedia services to a user.

Description

CATV signal frequency band separation, combiner, and CATV signal processing method using the same {FREQUENCY BANDWIDTH DIVIDING AND COMBINING APPARATUS FOR CATV SIGNAL AND CATV SIGNAL PROCESSING METHOD USING THE SAME}

The present invention relates to a CATV signal frequency band separation, a combiner, and a CATV signal processing method using the same, and more particularly, various multimedia services without affecting CATV (cable television) services using an existing cable network (network). It relates to a CATV signal frequency band separation, combiner, and a CATV signal processing method using the same that can provide a user with.

Cable television (CATV) provides a radio frequency (RF) signal transmitted through an optical fiber and a coaxial cable to the user's or receiver's television, unlike the traditional TV reception method that requires an over-the-air reception antenna. Or, it is a system that provides a broadcast service to a receiver. Cable television is also called cable broadcasting.

Conventional CATV provided only one-way broadcasting service, but as multimedia services including two-way supplementary services such as VoD (Video on Demand), data broadcasting, and Internet services emerged as a major service, provision of multimedia services along with broadcasting services is important. Became.

In accordance with the above demand, there has been a technical problem of simultaneously providing multimedia services using an existing cable network that provided CATV services. For example, a system using an existing cable network is a new service in a frequency band different from the existing one due to the problem of uplink (5 ~ 42/65MHz)/downward (54/88 ~ 864/1000MHz) of the amplifier and the problem of the directionality of the amplifier. There was a problem that was difficult to provide.

Republic of Korea Patent Publication 10-0938259 (2010.01.14), pages 3 to 4

The present invention provides a CATV signal frequency band separation, a combiner, and a CATV signal processing method using the same, which can provide various multimedia services to users without affecting the CATV service using an existing cable network.

The present invention provides a CATV signal frequency band separation, a combiner, and a CATV signal processing method using the same, which can provide a stable multimedia service by additionally configuring an existing CATV amplifier without changing hardware or cable networks.

The CATV signal frequency band separation and combiner according to the present invention detects a pilot signal by dividing the input unit for receiving an analog signal transmitted from the headend through a cable network, the received analog signal, and the pilot signal according to whether or not the pilot signal is detected. A control unit for switching the received analog signal to a different filter unit, and a plurality of filter units having different passbands, wherein each of the filter units transmits and amplifies the CATV broadcast signal of the received analog signal to an amplifier, and the multimedia service signal is Bypassing an amplifier, a filter unit that combines and outputs the amplified CATV broadcast signal and the bypassed multimedia service signal, an output unit that receives a signal from the filter unit and transmits it to an external device, and receives power from an external power source. And a power supply for supplying a driving voltage required for each of the components.

In an embodiment, the controller divides a preset frequency domain from the received analog signal and detects whether a pilot signal is included in the corresponding frequency domain.

In one embodiment, the control unit detects whether a pilot signal is included by receiving a divider that divides the received analog signal into a signal in a first frequency domain and a signal in a second frequency domain, and receives the signal in the first frequency domain. An RF detector that receives the signal in the second frequency domain and switches according to control, and a central control device that controls the signal in the second frequency domain to be switched to different filter units according to whether or not the pilot signal is detected. Includes.

In one embodiment, the signal in the first frequency domain includes a signal in the 450MHz band or later.

In one embodiment, the signal in the first frequency domain includes a 456MHz signal.

In one embodiment, the filter unit has a first passband and a first filter unit that processes an analog signal from which a pilot signal is detected, and a second filter unit that has a second passband and processes an analog signal from which a pilot signal is not detected. Includes.

In one embodiment, the first filter unit has a pass band of 5 ~ 450MHz and 650MHz or more.

In one embodiment, the first filter unit filters a received analog signal to pass a low-band signal through a first low-pass filter, and transmits the signal output from the first low-pass filter to an amplifier, and amplifies it by the amplifier. A first signal transceiver for receiving the received signal, a second low-pass filter for passing a low-band signal by filtering a signal received from the signal transceiver, and a first high-pass filter for passing a high-band signal by filtering the received analog signal And a second high-pass filter filtering the signal received by the first high-pass filter to pass the high-band signal.

In one embodiment, the second filter unit has a pass band of 5 to 870 MHz and 1000 MHz or more.

In one embodiment, the second filter unit is a third low-pass filter that filters the received analog signal to pass a low-band signal, and transmits the signal output from the third low-pass filter to an amplifier, and amplifies it by the amplifier. A second signal transceiver for receiving the received signal, a fourth low-pass filter for passing a low-band signal by filtering the signal received from the signal transceiver, and a third high-pass filter for passing a high-band signal by filtering the received analog signal And a fourth high-pass filter filtering the signal received by the third high-pass filter to pass the high-band signal.

In one embodiment, the multimedia service signal includes a Multimedia over Coax Alliance (MoCA) signal or a G.hn signal.

A CATV signal processing method through frequency band separation and combination according to the present invention is included.

In one embodiment, receiving an analog signal transmitted from the headend through a cable network by an input unit, detecting a pilot signal by dividing the received analog signal by a control unit, and detecting a pilot signal by the control unit according to whether or not the pilot signal is detected. Controlling each of the received analog signals to switch to different filter units, a filter unit receiving an analog signal among a plurality of filter units included in the filter unit transmits and amplifies the CATV broadcast signal of the received analog signal Bypassing the multimedia service signal, outputting by combining the amplified CATV broadcast signal and the bypassed multimedia service signal by a filter unit receiving the analog signal, and an output unit receiving a signal from the filter unit to an external device. And transferring to.

In one embodiment, the detecting of the pilot signal includes dividing a signal of 450 MHz band or later from the received analog signal, and detecting whether a pilot signal is included in the divided signal.

In one embodiment, the controlling of the received analog signals to switch to different filter units, respectively, when a pilot signal is detected, the received analog signal to a first filter unit having a passband of 5 ~ 450MHz and 650MHz or more. Switching and when the pilot signal is not detected, switching the received analog signal to a second filter unit having a passband of 5 ~ 870MHz and 1000MHz or more.

In one embodiment, the multimedia service signal includes a Multimedia over Coax Alliance (MoCA) signal or a G.hn signal.

As described above, the CATV signal frequency band separation, combiner, and CATV signal processing method using the same according to the present invention can provide various multimedia services to users without affecting the CATV service using an existing cable network. .

The CATV signal frequency band separation, combiner, and CATV signal processing method using the same according to the present invention can provide a stable multimedia service by additionally configuring an existing CATV amplifier without the need to change hardware or cable networks.

1 is a block diagram showing the configuration of a cable network providing CATV services to an aggregated building
2 is a block diagram schematically showing the configuration of a CATV distribution board including a CATV signal frequency band separation and combiner according to an embodiment of the present invention
Figure 3 is a schematic diagram showing the configuration of the separation and combiner of Figure 2
4 is a block diagram schematically showing the configuration of the control unit of FIG. 3
5 is a block diagram schematically showing the configuration of the filter unit of FIG. 3
6 is a flowchart illustrating a CATV signal processing method through frequency band separation and combination according to an embodiment of the present invention.

Hereinafter, a detailed description of a CATV signal frequency band separation, a combiner, and a CATV signal processing method using the same according to the present invention will be described.

1 is a block diagram showing the configuration of a cable network providing CATV service to an aggregated building.

Referring to FIG. 1, the cable network 100 includes a headend 110, a CATV distribution panel 120, a household terminal box 130, and a user TV 140.

The headend 110 refers to a main transmission device installed in a local CATV office to provide CATV services and interactive services to subscribers. The headend 110 provides terrestrial broadcasts received through the terrestrial antenna 102, satellite broadcasts received through the satellite antenna 104, and media content provided from other media content providers 106 to local CATV service users. do. The head end 110 may transmit a service signal to the CATV distribution panel 120 provided in each aggregated building through an optical cable, or may receive a signal from the CATV distribution panel 120.

The CATV distribution board 120 may be provided in each aggregated building, and provides the CATV service and the interactive service to users in the terminal box 130 of each household of the CATV service user. For example, the CATV distribution board 120 distributes the CATV service signal to each household terminal box 130 of the user, or transmits a two-way service signal to each household terminal box 130 according to a request received from the terminal box 130 of each household of the user. To provide. The CATV distribution board 120 and each household terminal box 130 may be connected through a coaxial cable.

The household terminal box 130 is connected to a service providing set-top box (not shown), and the set-top box may provide a CATV service and an interactive service to the user TV 140.

2 is a block diagram schematically showing the configuration of a CATV distribution board including a CATV signal frequency band separation and combiner according to an embodiment of the present invention.

Referring to FIG. 2, the CATV distribution board 120 includes a separator and combiner 210, an amplifier 220 and a divider 230. Separator and combiner 210 separates the analog signal received through the cable network into a CATV broadcast signal and a two-way multimedia service signal. Separator and combiner 210 transmits and amplifies the separated CATV broadcast signal to the amplifier 220, and bypasses the bidirectional multimedia service signal without transmitting to the amplifier 220, and then bypasses the amplified signal and bypasses the amplified signal. The passed signals are combined and output. In one embodiment, the multimedia service signal may include a Multimedia over Coax Alliance (MoCA) signal or a G.hn signal.

The separation and combiner 210 includes an input (IN) terminal for receiving an analog signal, an output (OUT) terminal for outputting a combined signal, a CATV IN terminal for outputting the separated CATV broadcast signal to the amplifier 220, and an amplifier 220. It includes a CATV OUT terminal that receives the CATV broadcast signal amplified in ). The amplifier 220 amplifies the received signal and outputs it.

The divider 230 distributes the signal output from the separation and combiner 210 and provides it to each household terminal box 130.

3 is a block diagram schematically showing the configuration of the separation and combiner of FIG. 2.

Referring to FIG. 2, the separation and combiner 210 includes an input unit 310, a power supply unit 320, a control unit 330, a filter unit 340, and an output unit 350.

The input unit 310 receives an analog signal transmitted from the headend 110 through a cable network. The headend 110 may include a CATV broadcast signal and an interactive multimedia service signal in the transmitted analog signal.

The control unit 330 detects a pilot signal by dividing the analog signal received through the input unit 310, and switches the received analog signals to different filter units according to whether or not the pilot signal is detected ( switching). In an embodiment, the controller 330 may divide a preset frequency domain from the received analog signal and detect whether a pilot signal is included in the corresponding frequency domain.

4 is a block diagram schematically showing the configuration of the control unit of FIG. 3.

Referring to FIG. 4, the control unit 330 includes a divider 410, an RF detector 420, a central processing unit 430, and a switch 440.

The divider 410 divides the analog signal received through the input unit 310 into a signal in a first frequency domain and a signal in a second frequency domain. For example, a signal in the first frequency domain may be a 456 MHz signal, and a signal in the second frequency domain may be a signal in the rest of the domain except for the first frequency domain.

The headend 110 may insert and transmit a pilot signal in a preset frequency region of the analog signal, and the divider 410 may divide the frequency region into which the pilot signal is inserted from the received analog signal. The corresponding frequency domain into which the pilot signal is inserted may be preset by the system designer in the splitter 410 of the headend 110 and the separation and combiner 210.

The divider 410 transmits a signal in the first frequency domain to the RF detector 420 and transmits a signal in the second frequency domain to the switch 440.

The RF detector 420 receives a signal in the first frequency domain from the divider 410 and detects whether a pilot signal is included in the corresponding frequency domain, and the central processing unit 430 detects whether the pilot signal is included in the RF detector 420. The switch 440 is controlled according to whether or not is detected. For example, the central processing unit 430 controls the switch 440 to switch signals in the second frequency domain to different filter units, respectively. In one embodiment, the central processing unit 430 may be implemented as a microcomputer.

The switch 440 receives a signal in the second frequency domain from the divider 410 and switches the signal in the second frequency domain under the control of the central processing unit 430. For example, when a pilot signal is detected in the first frequency domain, the central processing unit 430 switches the signal in the second frequency domain to the first filter unit, and the pilot signal is not detected in the first frequency domain. , The central processing unit 430 may switch the signal in the second frequency domain to the second filter unit. Each of the first filter unit and the second filter unit may have different pass bands. When a plurality of filter units having different passbands are used, the headend 110 may provide different services to the user for each corresponding passband. For example, the headend 110 may insert a CATV broadcast signal and a first multimedia service signal together with a pilot signal into an analog signal in the first passband and provide it, and the CATV broadcast signal and the second passband are provided in the second passband. It is possible to provide a multimedia service signal by inserting it into an analog signal.

Referring back to FIG. 3, the filter unit 340 includes a plurality of filter units having different passbands, and each filter unit transmits and amplifies the CATV broadcast signal of the received analog signal to an amplifier, and bypasses the multimedia service signal. Let it. The filter unit 340 may combine and output the amplified CATV broadcast signal and the bypassed multimedia service signal. The CATV broadcast signal having unidirectionality is amplified through the directional amplifier 220, and the multimedia service signal to be transmitted and received in both directions is bypassed without passing through the directional amplifier 220, so that the filter unit 340 is Make each service possible.

In one embodiment, the filter unit 340 has a first passband and a first filter unit that processes an analog signal from which a pilot signal is detected, and a second passband that processes an analog signal from which no pilot signal is detected. It may include 2 filter units.

5 is a block diagram schematically showing the configuration of the filter unit of FIG. 3.

Referring to FIG. 5, the filter unit 340 includes a first filter unit 510 and a second filter unit 520. The first filter unit 510 includes a first low pass filter (LPF) 512, a second low pass filter 514, a first high pass filter (HPF) 516, and It includes a 2 high-pass filter 518 and a first signal transceiver (not shown). The second filter unit 520 includes a third low-pass filter 522, a fourth low-pass filter 524, a third high-pass filter 526, a fourth high-pass filter 528, and a second signal transceiver (not shown). Poem).

In one embodiment, the first filter unit 510 may have 5 to 450 MHz and 650 MHz or more as passbands, and may process an analog signal from which a pilot signal is detected.

The first low pass filter 512 filters the received analog signal to pass the low band signal, and the first high pass filter 516 filters the analog signal to pass the high band signal. In one embodiment, the headend 110 inserts a CATV broadcast signal in a low band, a multimedia service signal in a high band, and inserts a pilot signal in a preset first frequency domain and transmits it.

The first low-pass filter 512 may pass only the CATV broadcast signal from the analog signal received from the controller 330 and filter the multimedia service signal.

The first signal transceiver (not shown) transmits the signal output from the first low-pass filter 512 to the amplifier 220 and receives a signal amplified by the amplifier 220. The second low-pass filter 514 may pass a low-band signal by filtering a signal received from the first signal transceiver. In an embodiment, the second lowpass filter 514 may remove noise from the CATV broadcast signal amplified by the amplifier 220.

In an embodiment, the first low-pass filter 512 and the second low-pass filter 514 may be low-pass filters each having a pass band of 5 to 450 MHz. In another embodiment, the first lowpass filter 512 and the second lowpass filter 514 may each have different passbands. For example, the first low pass filter 512 may have a pass band of 5 to 450 MHz, and the second low pass filter 514 may have a different pass band so as to filter a region where a lot of noise occurs during the amplification process. .

The first high-pass filter 516 may pass only the multimedia service signal from the analog signal received from the control unit 330 and filter the CATV broadcast signal. The multimedia service signal output from the first high-pass filter 516 bypasses the amplifier 220 and is input to the second high-pass filter 518. The second high-pass filter 518 may remove noise from the multimedia service signal. Conversely, when the response signal input by the user is transmitted to the headend 110, the second high-pass filter 518 passes only the multimedia service signal and the first high-pass filter 516 may remove noise.

In one embodiment, the first high-pass filter 516 and the second high-pass filter 518 may be high-pass filters each having a pass band of 650 MHz or more. In another embodiment, the first highpass filter 516 and the second highpass filter 518 may each have different passbands.

In one embodiment, the second filter unit 520 may have a passband of 5 to 870 MHz and 1000 MHz or more, and may process an analog signal in which no pilot signal is detected.

The third low-pass filter 522 filters the received analog signal to pass the low-band signal, and the third high-pass filter 526 filters the analog signal to pass the high-band signal. In one embodiment, the headend 110 may insert a CATV broadcast signal in a low band and insert a multimedia service signal in a high band to transmit.

The third low-pass filter 522 may pass only the CATV broadcast signal from the analog signal received from the controller 330 and filter the multimedia service signal.

The second signal transceiver (not shown) transmits the signal output from the third low-pass filter 522 to the amplifier 220 and receives a signal amplified by the amplifier 220. The fourth low-pass filter 524 may pass a low-band signal by filtering a signal received from the second signal transceiver. In an embodiment, the fourth lowpass filter 524 may remove noise from the CATV broadcast signal amplified by the amplifier 220.

In one embodiment, the third low-pass filter 522 and the fourth low-pass filter 524 may be low-pass filters each having a pass band of 5 to 870 MHz. In another embodiment, the third lowpass filter 522 and the fourth lowpass filter 524 may each have different passbands. For example, the third low pass filter 522 may have a pass band of 5 to 780 MHz, and the fourth low pass filter 524 may have a different pass band so as to filter a region where a lot of noise occurs during the amplification process. .

The third high-pass filter 526 may pass only the multimedia service signal from the analog signal received from the control unit 330 and filter the CATV broadcast signal. The multimedia service signal output from the third high-pass filter 526 bypasses the amplifier 220 and is input to the fourth high-pass filter 528. The fourth high-pass filter 528 may remove noise from a multimedia service signal. Conversely, when the response signal input by the user is transmitted to the headend 110, the fourth high-pass filter 528 passes only the multimedia service signal, and the third high-pass filter 526 may remove noise.

In one embodiment, the third high-pass filter 526 and the fourth high-pass filter 528 may be high-pass filters each having a pass band of 1000 MHz or more. In another embodiment, the third high-pass filter 526 and the fourth high-pass filter 528 may have different pass bands, respectively.

In the above example, an embodiment in which the filter unit 340 includes a plurality of filter units has been described, but in another embodiment, the filter unit 340 may be implemented to include one filter unit capable of changing a pass band. , For example, the filter unit 340 may be implemented to include one filter unit capable of changing a pass band under the control of the control unit 330. In this case, the first low-pass filter, the second low-pass filter, the first high-pass filter, and the second high-pass filter of the filter unit may each change their own pass bands under the control of the controller 330. For example, when a pilot signal is included in the received analog signal, the control unit 330 changes the passband of the filter unit of the filter unit 340 to 5 ~ 450 MHz and 650 MHz or more, and the received analog signal is a pilot signal. When is not included, the control unit 330 may change the pass band of the filter unit of the filter unit 340 to 5 to 870 MHz and 1000 MHz or more. In this case, the filter unit 340 can be simplified and the size of the filter unit 340 can be reduced.

Referring back to FIG. 3, the output unit 350 receives a signal from the filter unit 340 and transmits it to an external device. For example, the output unit 350 may transmit the received signal to the divider 230.

The power supply unit 320 receives power from an external power source and supplies a driving voltage required for each component of the separation and combiner 210.

6 is a flowchart illustrating a CATV signal processing method through frequency band separation and combination according to an embodiment of the present invention.

Referring to FIG. 6, the input unit 310 of the splitter and combiner 210 receives an analog signal transmitted from the headend 110 through a cable network (step S610).

The control unit 330 detects a pilot signal by dividing the analog signal received through the input unit 310 (step S620), and the control unit 330 converts the received analog signal to different filter units according to whether or not the pilot signal is detected. Control to switch (step S630). In one embodiment, the controller 330 divides a 456 MHz signal from the received analog signal and detects whether a pilot signal is included in the divided signal.

In one embodiment, when a pilot signal is detected, the control unit 330 switches the received analog signal to the first filter unit 510 having a passband of 5 to 450 MHz and 650 MHz or more, and no pilot signal is detected. In this case, the received analog signal may be switched to the second filter unit 520 having a pass band of 5 to 870 MHz and 1000 MHz or more.

Among the plurality of filter units included in the filter unit 340, the filter unit receiving the analog signal transmits the CATV broadcast signal of the received analog signal to the amplifier 220 and amplifies it, and bypasses the multimedia service signal (step S640). . In one embodiment, the multimedia service signal may include a Multimedia over Coax Alliance (MoCA) signal or a G.hn signal.

The filter unit receiving the analog signal combines and outputs the amplified CATV broadcast signal and the bypassed multimedia service signal (step S650). The output unit 350 receives a signal from the filter unit 340 and transmits it to an external device (step S660).

The CATV signal frequency band separation, combiner, and CATV signal processing method using the same described through FIGS. 1 to 6 are also implemented in the form of a recording medium including instructions that can be executed by a computer such as an application or module executed by a computer. It could be.

Computer-readable media can be any available media that can be accessed by a computer, and includes both volatile and nonvolatile media, removable and non-removable media. Further, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

The term module may mean hardware capable of performing functions and operations according to the respective names described in the specification, and may also mean computer program code capable of performing specific functions and operations, In addition, it may refer to an electronic recording medium, such as a processor, on which a computer program code capable of performing specific functions and operations is mounted.

Although described above as an embodiment of the present invention, the technical idea of the present invention is not limited to the above embodiment, and various CATV signal frequency band separations, combiners, and a CATV signal processing method using the same within the scope not departing from the technical idea of the present invention. Can be implemented.

100: cable network
110: headend
120: CATV distribution board
130: Generation terminal box
140: User TV

Claims (15)

An input unit for receiving an analog signal transmitted from the head end through a cable network;
The received analog signal is divided into a signal in a first frequency domain and a signal in a second frequency domain to detect whether the signal in the first frequency domain contains a pilot signal, and when the pilot signal is detected, the second frequency domain A control unit for switching the signal of the filter unit to the first filter unit of the filter unit, and switching the signal in the second frequency domain to the second filter unit of the filter unit when the pilot signal is not detected;
Including the first filter unit and the second filter unit, wherein the first filter unit and the second filter unit transmit and amplify the CATV broadcast signal of the received analog signal to an amplifier, bypass the multimedia service signal, and the amplification A filter unit for combining and outputting the CATV broadcast signal and the bypassed multimedia service signal;
An output unit for receiving a signal from the filter unit and transmitting it to an external device; And
A CATV signal frequency band splitter and combiner comprising a power supply unit receiving power from an external power source and supplying a driving voltage required for each component.
The method of claim 1, wherein the control unit
A CATV signal frequency band splitter and combiner for dividing a preset frequency domain from the received analog signal into a signal of a first frequency domain and detecting whether a pilot signal is included in the corresponding frequency domain.
The method of claim 2, wherein the control unit
A divider for dividing the received analog signal into a signal in a first frequency domain and a signal in a second frequency domain;
An RF detector for receiving a signal in the first frequency domain and detecting whether a pilot signal is included;
A switch receiving the signal in the second frequency domain and switching it according to control; And
When a pilot signal is detected in the signal in the first frequency domain, the signal in the second frequency domain is switched to the first filter unit of the filter unit, and when the pilot signal is not detected, the signal in the second frequency domain is transferred to the filter unit. 2 CATV signal frequency band splitter and combiner including a central control unit for switching to a filter unit.
The method of claim 3, wherein the signal in the first frequency domain is
CATV signal frequency band splitter and combiner, which is a 456MHz signal.
delete The method of claim 1, wherein the filter unit
A first filter unit that has a first passband and processes a signal in the second frequency domain when the pilot signal is detected; And
A CATV signal frequency band splitter and combiner comprising a second filter unit having a second passband and processing a signal in the second frequency domain when no pilot signal is detected.
The method of claim 6, wherein the first filter unit
CATV signal frequency band splitter and combiner with 5 ~ 450MHz and 650MHz or more as passbands.
The method of claim 7, wherein the first filter unit
A first low-pass filter for filtering the received signal in the second frequency domain to pass a low-band signal;
A first signal transceiver configured to transmit a signal output from the first lowpass filter to an amplifier and to receive a signal amplified by the amplifier;
A second low-pass filter for filtering a signal received by the signal transceiver to pass a low-band signal;
A first high-pass filter filtering the received signal in the second frequency domain to pass the high-band signal; And
A CATV signal frequency band splitter and combiner comprising a second high pass filter for filtering a signal received by the first high pass filter to pass a high band signal.
The method of claim 6, wherein the second filter unit
CATV signal frequency band splitter and combiner with 5 ~ 870MHz and 1000MHz or more as passbands.
The method of claim 9, wherein the second filter unit
A third low-pass filter for filtering the received signal in the second frequency domain to pass the low-band signal;
A second signal transceiver configured to transmit a signal output from the third lowpass filter to an amplifier and to receive a signal amplified by the amplifier;
A fourth low-pass filter for filtering a signal received by the signal transceiver to pass a low-band signal;
A third high-pass filter filtering the received signal in the second frequency domain to pass the high-band signal; And
A CATV signal frequency band splitter and combiner comprising a fourth high pass filter for filtering a signal received by the third high pass filter to pass a high band signal.
The method of claim 1, wherein the multimedia service signal is
CATV signal frequency band splitter and combiner including Multimedia over Coax Alliance (MoCA) signals or G.hn signals.
Receiving, by an input unit, an analog signal transmitted from a headend through a cable network;
Dividing the received analog signal into a signal in a first frequency domain and a signal in a second frequency domain to detect whether a pilot signal is included in the signal in the first frequency domain;
When the pilot signal is detected, the control unit switches the signal in the second frequency domain to the first filter unit of the filter unit, and when the pilot signal is not detected, the signal in the second frequency domain is transferred to the second filter unit in the filter unit. Switching;
Among the first and second filter units included in the filter unit, the CATV broadcast signal of the analog signal received by the filter unit receiving the signal in the second frequency domain is transmitted to an amplifier and amplified, and the multimedia service signal is bypassed. Letting go;
Combining the amplified CATV broadcast signal and the bypassed multimedia service signal by a filter unit receiving the signal in the second frequency domain and outputting the combined; And
A CATV signal processing method through frequency band separation and combination comprising the step of an output unit receiving a signal from the filter unit and transmitting it to an external device.
The method of claim 12, wherein detecting whether the signal in the first frequency domain includes a pilot signal
Dividing the 456MHz signal from the received analog signal; And
And detecting whether a pilot signal is included in the divided 456MHz signal.
The method of claim 12,
The first filter unit has 5 ~ 450MHz and 650MHz or more as a passband,
The second filter unit is a CATV signal processing method through frequency band separation and combination having 5 ~ 870MHz and 1000MHz or more as passbands.
The method of claim 12, wherein the multimedia service signal
CATV signal processing method through frequency band separation and combination including MoCA (Multimedia over Coax Alliance) signal or G.hn signal.

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