KR100818362B1 - A repeater for providing small power and multi-channel in a broadcasting system - Google Patents

Abstract

A TV repeater for providing small power and multi channel is provided to relay plural broadcasting channels at the same time in one TV repeater. A broadband reception amplifier generates multi channel broadcasting signals where band filtering and low noise amplification are performed if plural TV(Television) broadcasting signals having different frequency channels are received. A channel converter receives the multi channel broadcasting signals from the broadband reception amplifier, separates the received signals according to broadcasting channels, and assigns and controls n IF(Intermediate Frequency) processing modules so as to perform IF processing according to the separated broadcasting channels. A multi channel transmitter receives the multi channel broadcasting signals, where the IF processing is performed, from the channel converter and amplifies the received signals through small power.

Description

A REPEATER FOR PROVIDING SMALL POWER AND MULTI-CHANNEL IN A BROADCASTING SYSTEM}

1 is a conceptual diagram of a TV relay system according to the prior art.

2 is a conceptual diagram of a TV relay system according to an embodiment of the present invention.

Figure 3 is a block diagram of a low power multi-channel TV repeater according to an embodiment of the present invention.

Figure 4 is a detailed block diagram of a low power multi-channel TV relay apparatus according to an embodiment of the present invention.

5 is a failure control block diagram of a low power multi-channel relay device according to an embodiment of the present invention.

* Key Drawing

280: remote controller

310: broadband receiving amplifier

320: channel conversion unit

330: multi-channel transmitter

The present invention relates to a TV repeater, and a single output multi-channel TV repeater for receiving a plurality of TV broadcast frequency channel signals in one repeater and converting them into the same or different frequency channel signal.

In general, a TV repeater is a device provided to solve a shadow area where a signal transmitted from a main broadcast transmitter does not reach. The TV repeater amplifies and transmits a received broadcast signal.

TV repeaters up to now have been installed in high mountains and have a characteristic of transmitting signals at high power to service a large viewing area with a radius of several tens of kilometers.

However, in islands and mountainous areas, TV repeaters transmit signals at high power, which is inefficient in terms of power use and frequency use, and has a disadvantage in that high-rise buildings do not effectively solve the problem of urban hearing.

Most countries limit the radio signal transmission power that can be used without permission by the radio wave law of the country, and the TV repeater according to the prior art was inconvenient to obtain permission.

In terms of cost, the conventional TV repeater is installed and operated for each broadcaster, so that the cost is not only increased but also has a lot of difficulties in maintenance.

In the following description, a method of operating a TV repeater according to the prior art will be described with reference to the accompanying drawings.

1 is a basic operation conceptual diagram of a TV relay device according to the prior art.

More specifically, FIG. 1 shows a general structure of a relay system used to secure viewing rights in a blind spot or a shadow area in a conventional TV broadcast.

Referring to FIG. 1, a TV relay system according to the related art includes a main transmitter 110, a repeater receiving antenna 120, a repeating device 130, a repeater transmitting antenna 140, a customer receiver antenna 150, and a customer. The receiver 160 is included.

Here, it should be noted that the customer receiver antenna 150 and the customer receiver 160 shown in FIG. 1 are located in the astigmatism region 170.

The main transmitter 110 is installed and operated for each broadcasting company, and performs a function of transmitting a TV broadcast signal of a specific broadcasting station on a corresponding broadcasting frequency band and transmitting the radio broadcast.

The relay receiving antenna 120 receives the broadcast signal transmitted by the period transmitter 110 and transmits it to the relay device 130. Here, the relay device receiving antenna 120 according to the prior art may receive only one specific broadcast frequency channel.

The repeater 130 modulates and demodulates the applied broadcast signal and reconverts the same broadcast frequency band transmitted by the periodic transmitter 110. Subsequently, the relay device 130 amplifies the reconverted broadcast signal and transmits it to the relay transmission antenna 140.

The relay transmission antenna 140 transmits the applied broadcast signal to the astigmatism zone 170 shown in FIG.

The customer receiver antenna 150 receives the broadcast signal transmitted by the relay transmission antenna 140 and transmits it to the customer receiver 160. The customer receiver 160 processes the received broadcast signal and outputs it on the TV screen.

As described above, the TV relay device according to the related art has a size of the relay device because a range of high frequency power (RF) power supplied to the relay transmission antenna 140 is several watts to several hundred watts. There was a disadvantage that the large, high unit price.

In particular, since one TV repeater can process only one broadcast frequency band, there is an inconvenience in terms of operational efficiency.

In order to solve the problems of the prior art as described above, the present invention is to provide a TV relay apparatus capable of simultaneously processing a plurality of broadcast frequency bands.

The present invention provides a TV relay apparatus for transmitting a broadcast signal at a low power (for example, transmit power having a power of 10 milliwatts per mW or less) at a transmission antenna.

The present invention provides a TV relay apparatus capable of processing multi-channel broadcast signals through the combination of a frequency divider, a plurality of intermediate frequency (IF) processing modules, and a channel combiner, as well as an efficient operation of the intermediate frequency processing module. It is for.

In addition, the present invention is to provide a TV relay device capable of efficient allocation and control of the relay device resources through a remote control device provided outside the relay device.

The present invention is to provide a TV relay device capable of more stable operation by adding a fault detection function and the duplication function of the intermediate frequency processing module according to the fault detection to the relay device.

Other objects of the present invention will be readily understood through the following description of the embodiments.

In order to achieve the above object, according to an aspect of the present invention, a low power multi-channel TV relay device is disclosed.

According to an embodiment of the present invention, a TV repeater includes: a broadband reception amplifier for generating band-filtered and amplified broadband signals when a plurality of TV broadcast signals having different frequency channels are received; A channel converter for distributing at least one or more broadcast channels from the wideband signal applied from the wideband receiver amplifier and performing intermediate frequency processing for each of the distributed broadcast channels to combine the intermediate frequency processed broadcast channels; And a multi-channel transmitter for receiving the combined broadcast channel from the channel changer and transmitting a low power amplified broadcast signal.

According to another aspect of the present invention, a method for relaying a low power multi-channel TV broadcast signal is disclosed.

The multi-channel TV broadcast signal relay method according to an embodiment of the present invention includes the steps of (a) receiving a plurality of TV broadcast signals having different frequency channels; (b) distributing the signal received in the step (a) for each broadcasting channel; (c) performing intermediate frequency signal processing for each broadcast channel distributed in step (b); And (d) upconverting the intermediate frequency processed signal back to a transmission frequency, combining the upconverted frequency channels, and transmitting a multi-channel broadcast signal amplified to a preset gain value.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same components have the same number as much as possible even if displayed on different drawings.

Hereinafter, a preferred embodiment of a low power multi-channel TV relay device and a method thereof according to the present invention will be described in detail.

2 is a block diagram of a TV relay network according to an embodiment of the present invention.

As shown in FIG. 2, the TV relay network according to the present invention includes a first to N-th period transmitter 210, a low power multi-channel TV relay system 250, and a customer receiver 270 having a customer receiving antenna 260. It includes.

In the following description, the first to Nth period transmitters 210 will be simply referred to as period transmitters.

Here, the low power multi-channel TV relay system 250 includes a relay device 210, a broadband reception antenna 220, a broadband transmission antenna 230 and a remote controller 240.

Each transmitter 210 shown in FIG. 2 loads a TV broadcast signal on a pre-allocated unique frequency band and transmits it to a corresponding service area.

In general, the periodic transmitter 210 is installed for each broadcaster, modulates an analog or digital TV broadcast signal generated by the broadcaster to a carrier frequency assigned to the broadcaster and radiates it to a corresponding service area.

The wideband reception antenna 220 receives broadcast signals of different frequency bands (hereinafter, referred to as 'multi-channel broadcast signals') transmitted from the plurality of transmitters 210.

The wideband reception antenna 220 transmits the received multi-channel broadcast signal to the relay device 210.

The relay device 210 according to an embodiment of the present invention transmits the signal to the wideband transmission antenna 230 through a three-step multi-channel broadcast signal processing.

Here, the multichannel broadcast signal processing includes (1) amplifying a wideband received signal, (2) intermediate frequency processing through multichannel broadcast signal distribution, and (3) multichannel broadcast signal transmission.

The relay device 210 amplifies the attenuated signal after extracting a desired broadcast signal through a band pass filter in the wideband reception signal amplification step.

The relay device 210 may be a preset broadcast channel for the amplified multi-channel broadcast signal, wherein the remote controller 250 according to an embodiment of the present invention may set a broadcast channel to be processed through the relay device 210 in advance. Distribution to the corresponding intermediate frequency processing module.

Here, a detailed description of the intermediate frequency processing module will be described later with reference to FIGS. 3 to 5.

Thereafter, the relay device 210 generates a multi-channel broadcast signal by combining the broadcast channels processed through the intermediate frequency processing module. The generated multi-channel broadcast signal is amplified to a predetermined radio frequency gain (RF) gain and then band filtered and applied to the wideband transmission antenna 230.

Here, the radio frequency gain value may be adjusted according to the control signal of the remote controller 240.

In particular, the repeater 210 according to the present invention amplifies the multi-channel broadcast signal processed by the intermediate frequency to a small output (for example, may be less than 10 milliwatts (mW) per megahertz (MHz)) broadband transmission antenna 230 To apply.

The low power amplified multi-channel broadcast signal is transmitted to the service area of the relay apparatus through the broadband transmission antenna 230.

The customer receiver 270 located in the service area of the relay device 210 receives the multi-channel broadcast signal transmitted by the broadband transmission antenna 230 through the customer reception antenna 260.

As described above, since the relay device 210 according to the present invention is a low-power relay device, the relay device 210 has a configuration suitable for effectively solving the problem of the hearing loss area of about 1 km (Km).

In addition, since the relay device 210 according to the present invention has a configuration capable of relaying a plurality of broadcast channels through one relay device 210, it may provide a convenient and economical TV relay service.

3 is an internal block diagram of a relay apparatus according to an embodiment of the present invention.

As shown in FIG. 3, the relay device 210 according to the present invention may include a wideband reception amplifier 310, a channel converter 320, and a multichannel transmitter 330.

Referring to FIG. 3, the multi-channel broadcast signal received through the wideband reception antenna 220 is sequentially processed by the wideband reception amplifier 310, the channel converter 320, and the multichannel transmitter 330 to transmit wideband signals. Is applied to the antenna 230.

Hereinafter, the main functions of the broadband reception amplifier 310, the channel converter 320 and the multi-channel transmitter 330 will be described in detail.

In general, the signal attenuation occurs during the propagation process of the broadcast signal transmitted by the periodic transmitter 210.

The wideband reception amplifier 310 performs band filtering to extract a signal of a desired band from the multichannel broadcast signal received through the wideband reception antenna 220.

A low noise amplifier (LNA) included in the wideband reception amplifier 310 compensates for radio wave attenuation by amplifying a band-filtered multichannel broadcast signal.

In general, the low noise amplifier suppresses amplification of noise applied to a signal in a wireless transmission process and performs a function of amplifying only signal components.

The broadband reception amplifier 310 performs band filtering once again and then applies the band filtered signal to the channel converter 320 in order to remove spurious such as spurious generated in the low noise amplification step.

The channel converter 320 distributes the applied multi-channel broadcast signal to a predetermined intermediate frequency processing module and then performs intermediate frequency processing.

Here, the intermediate frequency processing includes a series of procedures for down-converting the distributed multichannel broadcast signal to an intermediate frequency (eg, including 180 MHz), passing a surface acoustic wave (SAW) filter, and then up-converting to a radio frequency. .

Here, the surface acoustic wave filter performs a function of selecting only a broadcast channel transmitted from a specific broadcast station from the applied multichannel broadcast signal.

The channel converter 320 generates a multichannel broadcast signal by combining the intermediate frequency processed broadcast signal and transmits the multichannel broadcast signal to the multichannel transmitter 330.

The multi-channel transmitter 330 applies a multi-channel broadcast signal to the wideband transmit antenna 230 after performing a predetermined radio frequency gain setting and band filtering according to the received multi-channel broadcast signal.

4 is a detailed block diagram of a low power multi-channel relay apparatus according to an embodiment of the present invention.

As shown in FIG. 4, the small power multi-channel repeater 210 includes a wideband reception amplifier 310, a channel converter 320, and a multichannel transmitter 330.

The broadband reception amplifier 310 includes a band pass filter 402, a low noise amplifier 404, and an image reject filter 406.

The bandpass filter 402 extracts a signal of a desired band from the multi-channel broadcast signal received through the wideband reception antenna 220.

When the noise is added to the multi-channel broadcast signal during the wireless transmission, the low noise amplifier 404 amplifies only signal components while suppressing amplification up to noise.

The image removal filter 406 provides a means for preventing a fatal image frequency from being transmitted to the channel converter 320 among the signals amplified by the low noise amplifier 404.

Here, the image frequency refers to unwanted frequency components generated according to the nonlinear characteristics of the amplifier. That is, since the image frequency is recognized as a noise component at the receiver, it is important to remove the image frequency at the transmitter to improve reception performance.

In addition, the image removal filter 406 removes spurious frequencies and provides a means for improving stability of the receiver by separating a radio frequency (RF) stage and an intermediate frequency (IF) stage.

The channel converter 320 includes a channel divider 408, an intermediate frequency processor 416, a phase locked loop 422, and a channel combiner 424.

The channel divider 408 distributes the multi-channel broadcast signal input from the image removing filter 406 to a pre-assigned intermediate frequency processing module without separate processing.

The intermediate frequency processing unit 416 includes first to Nth intermediate frequency processing modules 418 to 420, and each intermediate frequency processing module includes a down-converter 410, a channel filter 412, and a frequency. It includes an up-converter (414).

The frequency down converter 410 converts the multi-channel broadcast signal applied from the channel divider 408 into a predetermined intermediate frequency band and then applies it to the channel filter 412.

Here, it should be noted that the intermediate frequency processed multi-channel broadcast signal still includes a plurality of broadcast channels.

The channel filter 412 performs a band pass filtering of only a desired broadcast channel from an intermediate frequency processed signal. In general, since the distance between broadcast channels is mostly narrow, a filter having good skirt characteristics is required.

For example, the channel filter 412 may be a surface acoustic wave (SAW) filter having a center frequency of 183 megahertz (MHz) and a bandwidth of 6 megahertz (MHz), but may not necessarily be limited thereto.

The frequency upshifter 414 upconverts the broadcast signal selected by the channel filter 412 to the radio frequency band.

The channel combiner 424 generates a multi-channel broadcast signal by combining signals applied from at least one intermediate frequency processing module, and then applies the generated multi-channel broadcast signal to the ultra-short amplifier 426 of the multi-channel transmitter 330.

As described above, the channel converter 320 according to the embodiment of the present invention includes a plurality of intermediate frequency processing modules configured in parallel, so that a structural feature capable of simultaneously processing a plurality of broadcast channels in one repeater is provided. have.

The multi-channel transmitter 330 includes an ultra short amplifier 426, a gain adjuster 428, a first band filter 430, a high power amplifier 432, and a second band filter 434.

The ultrashort amplifier 426 amplifies the signal received from the channel combiner 424 to a predefined signal level to facilitate signal processing in the high power amplifier 432.

The gain adjuster 428 is set to the RF gain value according to the control signal of the remote controller 280, the ultra-amplified multi-channel broadcast signal is adjusted to the set radio frequency gain value.

The first band filter 430 performs band filtering to remove noise generated in the ultra-short amplification process according to the nonlinear characteristic of the amplifier.

The high power amplifier 432 amplifies the ultra-short amplified and gain-adjusted multi-channel broadcast signal with the final output power of the repeater.

For example, according to one embodiment of the present invention, the final output power output through the high output amplifier 432 may be set to 10 milliwatts per megahertz (MHz) or less.

The high power amplified signal is band filtered by the second band filter 432 having the same function as the first band filter, and then applied to the wideband transmission antenna 230.

According to a preferred embodiment of the present invention, the remote controller 280 may control the phase locked loop 422 using a predetermined control signal.

The phase locked loop 422 may control the reference phase signal provided to the frequency down converter 410 and the frequency up converter 414 according to a control signal from the remote controller 280.

Here, the reference phase signal is a signal for controlling the center frequency used for frequency down- or up-conversion so as not to shake.

In addition, the phase locked loop 422 may set a frequency band corresponding to the broadcast channel to be selected by the channel filter 412 according to the control signal of the remote controller 280.

5 is a failure control block diagram of a low power multi-channel relay apparatus according to an embodiment of the present invention.

As shown in FIG. 5, the low power multi-channel relay device 210 may further include a controller 510 and a failure detector 520 in the configuration of the channel converter 320 illustrated in FIG. 4.

The controller 510 may control the phase locked loop 422 and the intermediate frequency processor 416 according to the control signal of the remote controller 280.

The failure detection unit 520 according to an embodiment of the present invention may automatically perform a failure detection function at the same time as the operation of the relay device 210 or control the operation according to the control signal of the controller 510.

In particular, when driven according to a control signal of the control unit 510, the control unit 510 receives a failure detection request signal including operation control information from the remote controller 280, the failure detection unit according to the received operation control information 520 may be activated or deactivated.

When the controller 510 receives a broadcast channel allocation request message including at least one broadcast channel information from the remote controller 280, the controller 510 may select at least one intermediate frequency processing module according to the received broadcast channel information. Assign.

The broadcast channel information may include at least one of an intermediate frequency processing module identifier, an intermediate frequency, an intermediate frequency bandwidth, a radio frequency, a radio frequency bandwidth, and selected channel information.

The controller 510 allocates an intermediate frequency processing module corresponding to the received intermediate frequency processing module identifier, and provides broadcast phase information corresponding to the assigned intermediate frequency processing module to the phase locked loop 422.

The phase locked loop 422 provides a reference phase signal to the corresponding intermediate frequency processing module by using the received broadcast channel information.

When the failure detecting unit 520 according to the present invention detects a failure of a specific intermediate frequency processing module, a failure detection message including an intermediate frequency processing module identifier corresponding to the detected middle frequency processing module is transmitted to the controller 510. Send.

For example, the failure detection unit 520 may be unstable in the power applied to a specific intermediate frequency processing module or the reference phase signal provided to the frequency up-converter 410, the channel filter 412, and the frequency down-converter 414. In abnormal cases, it can be considered as a disorder.

In addition, when a severe degradation of an output signal from a particular intermediate frequency processing module occurs, the failure detection unit 520 may determine that a failure occurs in the intermediate frequency processing module.

When the controller 510 receives the failure detection message, the controller 510 determines whether there is a replaceable intermediate frequency processing module.

Here, the controller 510 may use any one of the intermediate frequency processing modules that are not currently allocated for the processing of a specific broadcast channel as a substitute for the failure-detected intermediate frequency processing module.

As a result of the determination, when there is a replaceable intermediate frequency processing module, the controller 510 replaces the detected intermediate frequency processing module with a replaceable intermediate frequency processing module.

The controller 510 may transmit a failure recovery message including the failure processing information to the remote controller 280.

The control unit 510 according to an embodiment of the present invention preferentially recovers a fault in order to perform a quick failback, and then transmits a fault handling result to the remote controller 280, but is not necessarily so.

For example, when the controller 510 detects a failure, the controller 510 notifies the remote controller 280 and then performs a failure recovery according to a control signal of the remote controller 280.

Here, the failure processing information may include an intermediate frequency processing module identifier having a failure and an replaced intermediate frequency processing module identifier.

When the remote controller 280 receives a failure recovery message, the remote controller 280 may display a failure recovery result of the corresponding broadcast channel.

If there is no replaceable intermediate frequency processing module, the controller 510 transmits a failure notification message including the ID of the intermediate frequency processing module detected to the remote controller 280.

When the remote controller 280 receives the failure notification message, the remote controller 280 may display a failure of the corresponding broadcast channel on a predetermined display unit provided in the remote controller 280.

In addition, the control unit 510 according to the present invention may include a function of shutting off power applied to the intermediate frequency processing module detected.

For example, the relay device 210 according to the present invention may include an on / off switch for controlling a power applied to each intermediate frequency processing module, and the control unit 510 may process a specific intermediate frequency signal detected by a failure. The power supply corresponding to the module can be shut off.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, the present invention has a merit of providing a more efficient multi-channel TV repeater by providing a wideband transmit / receive antenna and a repeater capable of simultaneously processing a plurality of broadcast frequency bands.

The present invention transmits a broadcast signal with low power (for example, transmit power having a power of 10 milliwatts per mW or less per MHz) in a wideband transmission antenna, so that a TV relay apparatus can be operated without the government's permission and notification in accordance with the Radio Law Notice. There are advantages to it.

Since the present invention includes a frequency divider, a plurality of intermediate frequency (IF) processing modules, and a channel combiner, it is possible not only to process a multi-channel broadcast signal but also to efficiently operate an intermediate frequency processing module.

In addition, the present invention has the advantage of providing a TV relay device capable of efficient allocation and control of the relay device resources through a remote control device provided outside the relay device.

The present invention has an effect of providing a TV relay device capable of more stable operation by adding a fault detection function and a duplication function of an intermediate frequency processing module according to a fault detection.

In particular, the TV relay apparatus according to the present invention transmits a broadcast signal at a small output power through one broadband output antenna, so that the size of the equipment is small and the development cost is low.

Another advantage of the present invention is that it transmits a relay signal with a small output, there is an advantage that can solve the problem of small-vision blind spots more efficiently.

The TV relay apparatus according to the present invention has an advantage of simultaneously processing analog and digital TV broadcast signals by using an intermediate frequency relay method.

The channel converter according to the present invention has an advantage of efficiently overcoming adjacent channel interference by adding a function of converting to a same or changed frequency band corresponding to a plurality of received broadcast frequency channels.

Claims (11)

In the TV relay device, When receiving a plurality of TV broadcast signals having different frequency channels, the broadband reception amplifier for generating a band-filtered and low-noise amplified multi-channel broadcast signal; A channel converter configured to receive the multi-channel broadcast signal from the wideband reception amplifier, separate the broadcast channel, and allocate and control n intermediate frequency processing modules to perform intermediate frequency processing for each of the separated broadcast channels; And A multi-channel transmitter for receiving the intermediate frequency processed multi-channel broadcast signal from the channel converter and amplifying a small output Including but, the channel converter is a low power multi-channel TV relay device, characterized in that for replacing the intermediate frequency processing module available when a failure occurs in a particular intermediate frequency processing module. The method of claim 1, The channel converter A channel divider for distributing the multi-channel broadcast signal received from the wideband receiver amplifier; N frequency down converters for converting a multi-channel broadcast signal applied from the channel divider into an intermediate frequency band for each broadcast channel; N channel filters corresponding to each frequency down converter for selecting a signal corresponding to a specific broadcast channel from the signal converted into the intermediate frequency band; N frequency up converters corresponding to each channel filter to convert the selected signal into a radio frequency band; a channel combiner for generating the multi-channel broadcast signal by combining the signals received from the n up-converters; And And a phase locked loop oscillator for providing a reference phase signal provided to the frequency down converter, the channel filter, and the frequency up converter. The method of claim 2, And the channel converter comprises n intermediate frequency processing modules including the frequency down converter, the channel filter, and the frequency down converter one by one in parallel. delete The method of claim 3, The channel converter is connected to a remote controller, The phase locked loop oscillator supplies a reference phase signal corresponding to the control signal to at least one intermediate frequency processing module according to the control signal of the remote controller. The method of claim 5, And the multi-channel transmitter sets the output power of the combined broadcast signal according to a control signal of the remote controller according to a radio frequency gain value included in the control signal. The method of claim 1, The small output is a low power multi-channel TV repeater, characterized in that the output of less than 10 milliwatts per megahertz (MHz). A method for receiving a broadcast signal from a transmitter and relaying a TV broadcast signal in a TV repeater including n intermediate frequency processing modules, (a) receiving a multi-channel broadcast signal transmitted from at least one main transmitter; (b) allocating the intermediate frequency processing module by distributing the received multi-channel broadcast signal for each preset broadcast channel; (c) performing intermediate frequency signal processing for the corresponding broadcast channel by the assigned intermediate frequency processing module; And (d) combining the broadcast signal processed by the intermediate frequency signal and transmitting a low power amplified multi-channel broadcast signal according to a preset radio frequency gain; Including, but if a failure is detected in the intermediate frequency signal processing corresponding to a specific broadcast channel, replacing the intermediate frequency processing module assigned to the corresponding broadcast channel with an intermediate frequency processing module not assigned in step (b) low power multi-channel TV broadcast signal relay method. The method of claim 8, The TV relay device connected to the remote controller, (e) receiving a broadcast channel assignment request message including at least one broadcast channel information from the remote controller; And (f) when receiving the broadcast channel assignment request message, allocating an intermediate frequency processing module corresponding to the broadcast channel information; And in step (b), apply the multi-channel broadcast signal to the intermediate frequency processing module assigned in step (f). The method of claim 9, And the radio frequency gain value is received from the remote controller and amplifies the multichannel broadcast signal combined in the step (d) according to the received radio frequency gain. The method of claim 8, In the step (d), the combined multi-channel broadcast signal relay method, characterized in that amplified to an output of less than 10 milliwatts per megahertz (MHz) (mW).

Images