KR200237127Y1 - AMP for combining and dividing satellite resonance input - Google Patents

Abstract

The satellite TV input hybrid split type amplifier of the present invention has an additional amplifier for selecting and amplifying high frequency digital satellite signal in the MATV & CATV signal amplifier and separately input or mixed input of digital satellite broadcasting signal and MATV & CATV broadcasting signal. In addition to the newly built apartments, existing apartments that use cables of a certain level (FB level) can also be installed in a single apartment in a complex of apartments without the need to install satellite antennas for each household or separate piping and wiring work. Only broadcast satellite antennas are installed, and in each household only digital satellite broadcast receivers can be installed to watch satellite broadcasts.

As such, it is not necessary to install a separate antenna in each house by combining the existing headend with the existing headend and replacing only the amplifier and distributor for the digital satellite signal. It can work.

Description

AMP for combining and dividing satellite resonance input

The present invention relates to an amplifier for watching satellite broadcasting. More specifically, the digital satellite broadcasting signal and the MATV and CATV broadcasting signals are separately input or mixed in a manner of separately inputting a single pipe using a single satellite antenna in a multi-family house. The present invention relates to an amplifier that enables viewing of digital satellite broadcasting and existing broadcasts without wiring.

Satellite broadcasting generally refers to a broadcasting system using satellites for the purpose of transmitting various broadcasting programs such as TV programs and audio programs. When a broadcasting station transmits a TV signal (program) to a transmitting station, It is a broadcasting system that emits radio waves to satellites of geostationary satellite orbit located at 36,000 km and amplifies and retransmits the received radio waves.

These satellite broadcasts are being serviced in various parts of the world, including the United States, Europe, and Japan. In Korea, five channels including KBS 1,2, EBS 1,2, and Broadcasting University TV are currently being tested. In particular, digital satellite broadcasting can implement interactive service, unlike conventional terrestrial broadcasting and CATV, by utilizing the characteristics of digital, and can transmit hundreds of channels and connect directly with computer as well as TV. As digital communication is possible, its use is expected to increase rapidly in the future.

FIG. 1 shows a state where satellite antennas and receivers are installed and used in each home to view existing airwaves, CATV, and digital satellite broadcasting in each home.

Conventional over-the-air, CATV, and satellite broadcasts through cable operators include signals received through satellite, UHF, and VHF antennas that are separated / mixed and amplified at the head end 10 and retransmitted to each subscriber. do. When a signal transmitted along the transmission path is lost in the middle, the amplifier 20 is amplified and a signal having a proper gain is transmitted to each home. The digital satellite signal is received from a satellite through a separate digital satellite antenna 40 installed in each home and directly connected to a computer or through a receiver to a TV.

As described above, in order to receive a digital broadcast signal in each home, as shown in FIG. 1, each subscriber separately subscribes to a digital satellite broadcasting company and decodes an antenna and a received signal for receiving a digital satellite signal transmitted from a satellite. Digital satellite broadcasting receivers should be installed to enable viewing on a regular TV. As such, since expensive satellite antennas and receivers must be purchased in order to receive digital satellite broadcasts, the burden of each household is large, and thus the spread of the satellites is still slow.

It is possible to use the digital satellite broadcasting cable separately or install the digital satellite broadcasting cable in 54 ~ 750MHz, which is the frequency band of the existing MATV & CATV band, and use the cable for MATV & CATV signal. There is a way. However, in the first case, the TV can be watched in the best picture quality, but a separate pipe wiring work is required, and such work is also possible in a new building. In the second case, the apartment house using the existing bidirectional 750MHz amplifier can be used as it is, and it is inexpensive because only the equipment capable of bringing down the satellite antenna and frequency in the apartment complex and the mixing unit that can be mixed with the existing headend can be installed. Although the band is already a comprehensive cable broadcasting and digital cable broadcasting band, it is already impossible to do so in CATV.

Accordingly, an object of the present invention is to install an amplification device for the selection and amplification of high-frequency digital satellite signals in the MATV & CATV signal amplifier, and to expand and expand the digital satellite broadcasting signal and the MATV & CATV broadcasting signal separately or in a mixed input manner. In addition to existing apartments, existing apartments that use a cable of a certain level (FB level: FB level more than 94 FB level cables) are installed with satellite antennas for each home or separately. It is to provide a satellite public input mixed split type amplifier that installs only one satellite antenna for digital satellite broadcasting in a multi-family housing complex without the need for plumbing and wiring, and enables each household to install satellite receiver for digital satellite broadcasting.

1 is a system structure diagram for watching a conventional satellite broadcasting.

Figure 2 is a system structure diagram for watching satellite broadcasting according to the present invention.

3 is a structural diagram showing a structure of an amplifier according to the present invention.

* Explanation of symbols for main parts of the drawings

10: Head End 20, 30a, 30b: Amplifier

301: CATV & MATV amplifying unit 302: digital satellite signal amplifying unit

303: switch section 304: mixing section

40: digital satellite antenna 50: LNB

In order to achieve the above object, the satellite hearing input mixed split type amplifier of the present invention is a CATV & MATV amplification unit for receiving and amplifying CATV & MATV (Master Antena TV) signals, and receiving and amplifying digital satellite signals. And a digital satellite signal amplifying unit, a switch unit for separately receiving or mixing the CATV & MATV signal and the digital satellite signal, and a mixing unit for mixing the CATV & MATV signal and the digital satellite signal.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing a system structure for watching digital satellite broadcast according to the present invention, Figure 3 is a block diagram showing the configuration of an amplifier according to the present invention.

The amplifiers 30a and 30b include an amplifier section for selectively amplifying a CATV & MATV signal having a frequency of 54 to 750 MHz and an amplifier section for selectively amplifying a digital satellite signal having a frequency of 950 to 2150 MHz. The configuration of 30a and 30b is shown in FIG. 3, and the amplifier 30a is configured such that the switch unit 303 described below is turned off so that the CATV & MATV signal and the digital satellite signal are input separately, and the amplifier 30b is the switch unit. 303 is turned on and configured to receive one signal in which the CATV & MATV signal and the digital satellite signal are mixed.

CATV & MATV amplifying unit 301 is the same as the existing CATV & MATV signal amplifier, and as shown in Fig. 3, a band pass filter (BPF) for selecting a frequency of 54 to 750 MHz and 5.75 to 42.75 MHz for CATV upward signal input Band pass filter (BPF) is installed at each input and output stage to select frequency.

The digital satellite signal amplification unit 302 is a component that selects and amplifies 950 to 2150 MHz, which is a frequency band of the digital satellite signal, and has a band pass filter (BPF) for selecting such a digital satellite signal. Are installed on each.

The switch unit 303 is connected between the above-described input terminals of the CATV & MATV amplifying unit 301 and the digital satellite signal amplifying unit 302 to turn on and off the two input terminals as necessary so that the existing CATV & MATV signal and the digital satellite signal can be converted. Each can be input separately or mixed.

The mixing unit 304 is located at the output terminal of the CATV & MATV amplifying unit 301 and the digital satellite signal amplifying unit 302 and mixes the above-described output signals of two different frequency bands into one signal.

The operation of the switch unit 303 separates the CATV & MATV signal and the digital satellite signal in the case of ultra short amplification, and inputs a mixed signal in the rear stage amplification to receive and amplify the signal transmitted through one transmission path. Can be received.

In the ultra-stage amplifier 30a having the switch section 303 open, it is received from the CATV & MATV signal and the digital satellite antenna 40 of the 54 to 750 MHz band retransmitted from the headend 10 and down-frequencyed at the LNB 50. The digital satellite signals of the 950 to 2150 MHz band are separately input to the CATV & MATV amplifying unit 301 and the digital satellite signal amplifying unit 302, respectively, and then amplified after being filtered by the BPF. Each signal amplified in this way is filtered back to the corresponding frequency. As such, in the case of ultra short amplification, separate inputs are required because the input paths of the CATV & MATV signal and the digital satellite signal are different, but since the signals are transmitted along one transmission path, the two signals need to be mixed. The mixing unit 304 located at the output of the CATV & MATV amplifying unit 301 and the digital satellite signal amplifying unit 302 mixes two output signals having different frequency bands into one signal (54 to 750 MHz + 950 to 2150 MHz). Is output.

Since the transmitted signal is transmitted along one transmission path, only one input terminal is needed for post-amplification. In this case, the amplifier 30b in which the switch unit 303 of the amplifier 30a is closed may be used at the time of the post-amplification. In other words, by turning on the switch unit 303, the mixed signal output from the amplifier 30a may be input to either input terminal of the amplifier 30b.

The frequency of 54 to 750 MHz among the mixed signals input to the amplifier 30b is the BPF of the input terminal of the CATV & MATV amplifier 301, and the frequency of 950 to 2150 MHz is respectively the BPF of the input terminal of the digital satellite signal amplifier 302. After filtering, it is amplified to have an appropriate gain and then transmitted to the receiver of the home.

The signals separately selected and amplified by each amplifying unit 301 and 302 are mixed by the mixing unit 304 and then transmitted to a receiver of each home through a divider. In each home, only a receiver for digital satellite viewing is installed. You can watch it.

Although the above-described embodiment describes an amplifier for separating or mixing two different signals (CATV & MATV and digital satellite signals), it is obvious that the present invention is not limited to only two signals. That is, two or more amplification units capable of selecting and amplifying a specific frequency band and two or more input signals may be separately inputted to each of the two or more amplifying units, or a single signal in which two or more input signals are mixed may be input. By providing a switch unit, two or more different input signals can be responded to.

As mentioned above, it is not necessary to install a separate antenna in each home by grafting the existing headend in the apartment and replacing only the amplifier and distributor for the digital satellite signal. There is an effect that can be received.

Claims (4)

An amplifier for amplifying a plurality of input signals, A plurality of amplifiers for selecting and amplifying an input signal of a specific frequency band among the plurality of input signals; A switch unit configured to separately input the plurality of input signals to the plurality of amplifiers or to input one signal in which the plurality of input signals are mixed; And And a mixer for mixing the signals output from the plurality of amplifiers into a single signal. The method of claim 1, wherein the plurality of amplifiers A CATV & MATV amplifying unit for selecting and amplifying CATV & MATV signals having a frequency in the range of 5 to 750 MHz; And And a digital satellite signal amplifying unit for selecting and amplifying a digital satellite signal having a frequency of 950 to 2150 MHz. The method of claim 2, wherein the CATV & MATV amplification unit A filter for selectively passing the CATV & MATV signal; And And amplifying means for adjusting the gain of the CATV & MATV signal. 3. The digital satellite signal amplifier of claim 2, wherein A filter for selectively passing the digital satellite signal; And And amplifying means for adjusting the gain of the digital satellite signal.