KR200390510Y1 - Amplifying and Allotting System for Use in Wire Broadcasting - Google Patents

Abstract

The present invention relates to an amplification distribution device for cable broadcasting, and in particular, a first choke coil for transmitting only the voltage from the voltage transmitted through the original line and the broadcast signal to the next amplification distribution device side; A signal branch unit separating the broadcast signal from the voltage and the broadcast signal transmitted through the original line; A first diplexer for separating a high frequency video signal and a low frequency data from the broadcast signal; First and second amplifiers for amplifying the image and data signals to a predetermined level; A second diplexer for separating high frequency video signals and low frequency data from broadcast signals transmitted from subscribers; A low pass filter for removing various noise signals included in the input broadcast signal and transmitting only a pure broadcast signal; A matcher and a broadcast signal distributor for matching the broadcast signal transmitted through the low pass filter with the antenna impedance of the subscriber TV receiver and distributing it through several taps; A second choke coil for extracting only a voltage from a voltage transmitted through a raw line and a broadcast signal; It consists of a switching mode power supply which rectifies the AC voltage to a constant DC voltage and provides it to each part.

Therefore, it is possible to be compatible with the existing equipment, and it is easy to expand the incoming cable due to the additional subscriber increase without changing the existing system, so that the difficulty of management due to the complexity of the incoming ship facility, excessive increase of installation cost, In addition, it is possible to prevent degradation of service quality and degradation of signal level.

Therefore, it is a very useful design, such as reducing the additional material costs and installation costs, such as amplifiers, distribution devices and cables, as well as improved convenience in use.

Description

Amplifying and Allotting System for Use in Wire Broadcasting

The present invention relates to an amplification distribution device for cable broadcasting, and more particularly, to an amplification distribution device consisting of a signal branch, a deplexer, an amplifier, a low pass filter, an impedance matcher and a broadcast signal distributor, and a switching mode power supply. By installing and replacing the connector at the existing branch of the network, the device itself is driven by the voltage transmitted along with various video signals and data from the central broadcasting center such as satellite broadcasting and cable TV or general cable broadcasting company. It is designed to distribute to each subscriber with good quality without loss through existing coaxial cable.

In general, as shown in FIG. 1, the cable branching apparatus 17 for cable broadcasting subscribers includes a modulator 11, a signal processor 12, a modem 13, and various video signals provided by satellite broadcasting and cable TV or a general cable broadcasting company. The central broadcasting center 10 having a personal computer 14 and combine 15 or the like is installed in the middle of the main line 16 when transmitting to each subscriber TV receiver. It serves as a branch to the back.

In addition, in the conventional cable broadcasting subscriber line branching device, as shown in FIG. 2, a plurality of subscriber cable connection steps T1-Tn (usually between 2 and 16) are provided outside one case, and the inside thereof is provided. When a video signal including a voltage is transmitted from the central broadcasting center, the video signal divider 32 that separates the broadcast signal and the power supply voltage and delivers the received signal on a continuous line, and is connected to the subscriber through the tap and cable It consists of several impedance matchers 33 and 34 which mutually match the antenna impedance of the TV receiver.

Such subscriber line branching devices are connected to the number of subscribers corresponding to the number of taps installed on each line branching device on the distribution line installed in the periphery of the subscriber building.

However, the number of cable connection taps installed in the subscriber line branching device is limited, so when the number of taps is insufficient due to the increase of each subscriber, another subscriber line branching device is installed on the distribution line of one distribution line. It must be connected to each subscriber through.

Therefore, in the case of dense households (for example, multi-family / rowhouses, medium / small buildings, etc.), as shown in Fig. 3, several subscriber line branch devices are installed in one distribution line and each subscriber line branch device is installed. Each cable connection tab and each member's household in each building must have a separate lead-in cable.

As such, if the operator installs another subscriber line branch device at the rear end of the transmission network tap output terminal of the subscriber line branch device to secure the terminal, and then installs a cable line for each household, the service quality is deteriorated due to signal loss and poor connection. Of course, there is a problem that the urban aesthetics are impeded by overlapping the cable of the number of incoming wires corresponding to the number of joining furniture between one distribution line and the building.

In addition, when installing additional subscriber line branching device or distributing coaxial cable, the insertion loss is 3-1.6dB and the line distribution loss is 4.9dB for each device. And there is a problem that a poor quality often occurs.

In addition, until now, in the early stages of the cable broadcasting relay facility, one or two subscriber line branch devices are installed for most of the cable owners. Deficiencies continue to occur.

Therefore, the present applicant can separate the voltage transmitted through the original line and the broadcast signal when the tap of the existing line branch device installed in a specific distribution line is insufficient, and then deliver it to the furniture dense amplification distributor through a pair cable. Filed 20-2004-0011681 filed for domestic utility model registration device for cable broadcasting line diverter to dense amplification distributor.

In addition, by applying "Furniture Dense Amplification Distribution Apparatus Application No. 20-2004-0011680" installed in each household, which has several output taps and installed in each household, Difficult to manage due to the complexity of the incoming line facility due to the cable connection, excessive installation cost, and additional cable branching equipment is installed when the number of subscribers is added, and the cable is laid again. The change was prevented beforehand.

However, when installing a "wired broadcasting line branching device" or a "household dense amplification distribution device" having such a configuration, all existing coaxial cables are removed to separate and transmit voltage and broadcast signals, and a separate Since expensive pair cables having a configuration in which a power supply line is integrally formed are to be installed, there are problems such as an increase in material costs and labor costs.

The present invention has been devised to solve such a conventional problem, and it is designed to be compatible with the existing conventional branch by installing it in the existing branch connector connector as it is, and it is possible to receive various video signals, data and voltages transmitted from the central broadcasting center. Do not use a separate amplifier as it can be received through the original line, separated into a voltage and a broadcast signal, and then amplified by an amplifier operated by the separated voltage, and then transmitted to a subscriber household in each building through a general coaxial cable. It aims to compensate for the loss of line distribution without any deterioration in service quality and signal level fluctuation.

In addition, it is possible to reduce the labor cost and the installation cost according to the installation of the amplifiers, and also to install the expensive voltage and broadcasting signal branched cable broadcasting line branching device or furniture dense amplification distribution device between the original line and the subscriber and interconnected them. The state aims to provide an amplification distribution device for cable broadcasting that can prevent the increase in installation and labor costs due to the use of a pair cable.

The object of the present invention is a first choke coil for transmitting only the voltage from the voltage and the broadcast signal transmitted through the original line in the mixed state to the next amplification distribution device side; A signal branch unit which transmits the broadcast signal to the next amplification distribution unit in the mixed state of the voltage and the broadcast signal transmitted through the original line and to the first deflector; A first diplexer for separating a high frequency image signal and a low frequency data from the broadcast signal branched through the signal branch and transmitting the low frequency data to a first amplifier; A first amplifier for amplifying the image and data signals inputted through the first diplexer to a predetermined level; A second deplexer for separating a high frequency video signal and a low frequency data from the broadcast signals transmitted from subscribers and transmitting the separated high frequency data to a second amplifier; A second amplifier for amplifying the image and data signals inputted through the second diplexer to a predetermined level; A low pass filter which removes various noise signals included in broadcast signals input from the first amplifier and subscribers and transfers only pure broadcast signals; An impedance matcher and a broadcast signal distributor for matching the broadcast signal received through the low pass filter with the antenna impedance of the subscriber TV receiver and distributing it through several taps to deliver the signal to each subscriber's home; A second choke coil which extracts only the voltage from the voltage transmitted through the original line and the broadcast signal in the mixed state; It can be achieved by configuring a switching mode power supply to rectify the AC voltage input through the second choke coil to a constant DC voltage to provide to each part.

Therefore, when the tap of the existing line branch device installed in a specific distribution line is insufficient or when you want to install a new branch device, you can use the coaxial cable and connector as it is to install the device and transmit the voltage and broadcasting signal transmitted through the original line. After the separation, the device can be driven by the voltage, and then the general coaxial cable can transmit only the broadcast signal to the subscriber's household in each building regardless of the distance between the subscriber's households without using a separate amplifier. The broadcast signal can be transmitted without loss of line distribution.

Therefore, it is possible to deliver a high quality broadcast signal to each subscribing household without any change in the signal level, thereby significantly improving the quality of service, and reducing labor and installation costs associated with the installation of amplifiers.

In addition, high-quality voltage and broadcast signal divergence between the original line and subscribers, and wired broadcasting line splitters or furniture dense amplification distribution units and high quality broadcasting signals without using a pair cable interconnecting them. It can be delivered to, so that the increase in installation and labor costs can be prevented in advance.

Hereinafter, a preferred embodiment of the present invention device based on the accompanying drawings in detail as follows.

Figure 4 shows a block diagram of the device of the present invention, Figure 5 shows an example of the installation state of the device of the present invention.

According to this, the first choke coil 28 for transmitting only the voltage from the voltage transmitted through the original line 16 and the broadcast signal in the mixed state to the next amplifying distributor side;

A signal branch unit 20 which transmits the broadcast signal to the next amplification distributor in the mixed state and the voltage transmitted through the original line 16 to the first amplifier 21;

A first diplexer (21) which separates a high frequency video signal and a low frequency data from the broadcast signal branched through the signal branch unit 20 and transmits the low frequency data to the first amplifier;

A first amplifier 22 for amplifying the image and data signals inputted through the first diplexer 21 to a predetermined level;

A second deflector (23) which separates the high frequency video signal and the low frequency data from the broadcast signals transmitted from subscribers and transfers the low frequency data to the second amplifier;

A second amplifier 24 for amplifying the image and data signals inputted through the second deplexer 23 to a predetermined level;

A low pass filter 25 for removing various noise signals included in broadcast signals inputted from the first amplifier 22 and subscribers and transmitting only pure broadcast signals;

Impedance matcher and broadcast signal divider for matching the broadcast signal received through the low pass filter 25 with the antenna impedance of the subscriber TV receiver and distributing it through several taps T1-Tn to deliver to each subscriber home. 26;

A second choke coil 29 for extracting only the voltage from the voltage transmitted through the original line 16 and the broadcast signal in the mixed state;

It is characterized by consisting of a switching mode power supply 27 to rectify the AC voltage input through the second choke coil 29 to a constant DC voltage to provide to each part.

Referring to the operation and effect of the device of the present invention configured as described above are as follows.

First of all, when a cable operator performs initial cable construction or increases the number of subscribers and increases the number of subscribers, the broadcasting company does not install the existing cable broadcasting line branching device which diverges the broadcast signal to each subscriber and installs it on the original line. If the device of the present invention is installed in the connector connection part of the receiver, it is amplified and transmitted when transmitting the broadcasting signal to each subscriber, so that line distribution loss can be prevented and the quality can be improved without changing the signal level without using a separate amplifier. The broadcast signal can be delivered to each subscriber's household, which can greatly improve the quality of service.

Of course, at least eight (8, 16, 32, etc.) broadcast signal output taps T1-Tn are provided in the impedance matcher and broadcast signal splitter 26 of the present invention. Can receive a cable broadcasting signal through one of the devices of the present invention.

On the other hand, when a variety of broadcast signals (i.e. video signals and data) and AC voltages are transmitted through a main line 16 which is a relay cable in a central broadcasting center such as a specific cable broadcasting or cable broadcasting, the first choke 28 Only the voltage is detected and transmitted to another existing cable broadcasting line branching device or amplification distribution device, and the signal branching unit 20 separates only the broadcast signal to the next other cable broadcasting line branching device or amplifying distribution device next. At the same time as the transfer to the first deflector (21).

In addition, the second choke coil 29 extracts only the voltage from the voltage and the broadcast signal transmitted through the original line 16 in the mixed state and transfers the voltage to the switching power supply 27 so that the switching mode power supply ( In step 27), the AC voltage inputted through the second choke coil 29 is rectified to a constant DC voltage to be provided to each part. Thus, the amplification part of the device of the present invention is applied to the DC voltage provided by the switching mode power supply 27. It has a form that can be driven by itself.

On the other hand, in the first deplexer 21 receiving the broadcast signal through the signal branch unit 20, the broadcast signal is separated into a high-frequency (H) video signal and a low-frequency (L) data, and the first amplifier ( 22).

Accordingly, the first amplifier 22 amplifies the image and data signals input through the first deflector 21 to a predetermined level and transfers them to the low pass filter 25 through the second deflector 23. In the low pass filter 25, various noise signals included in the broadcast signal input through the first amplifier 22 are removed, and only pure broadcast signals are transmitted to the impedance matcher and broadcast signal distributor 26.

Therefore, the impedance matcher and broadcast signal splitter 26 impedance-matches the broadcast signal transmitted through the low pass filter 3 and distributes the signal amplified to each subscriber home through several taps T1 -Tn. Will be delivered.

On the other hand, the video signal and data sent from each subscriber is transmitted to the second deflector 23 through the impedance matcher and broadcast signal splitter 26 and the low pass filter 25 to transmit the high frequency video signal and the low pass. After the data is separated into the second amplifier 24 is transferred.

Accordingly, the second amplifier 24 amplifies the image and data signals inputted through the second deflector 23 to a predetermined level and then connects the first deflector 21, the signal branch unit 20, and the original line. It is delivered to the central broadcasting center.

On the other hand, after separating the conventional branch consisting of the branch connector connecting module (A) and the distribution module (B) shown in Figure 6a as shown in Figure 6b, amplification between the connection module (A) and the distribution module (B). By inserting and installing the module (C), it is possible to be compatible with the existing tapper mechanically, it is possible to configure the system according to the present invention without changing the existing system.

Here, the internal circuit configuration of the connection module (A), distribution module (B) and amplification module (C) can be variously modified in accordance with the needs of those skilled in the art, it is not limited to a specific one.

In this way, the device of the present invention is equipped with a two-way amplifier that is driven by the voltage supplied from the central broadcasting center, so that the loss due to signal distribution can be bidirectionally compensated, and thus the cable insertion loss and line distribution loss due to the extension of the distance. In addition, the quality of service can be greatly improved.

On the other hand, an expensive pair cable (i.e., coaxial cable for transmitting a broadcast signal and a power supply line) may be integrated between the present device and each subscriber, such as when using a "wired broadcasting line branching device" or a "household dense amplification distribution device." It does not use the provided cable) and connects directly to the subscriber through the coaxial cable that is already used, and transmits only the broadcast signal to the subscriber. Also, even if the distance between the branch and the amplifying device and the subscriber is large, a separate amplifier is not required. The effect can be obtained.

As described above, according to the present invention, by installing and replacing the connector connection of the existing branch on the original line by the voltage transmitted along with various video signals and data from the central broadcasting center such as satellite broadcasting and cable TV or general cable broadcasting company. By driving the device itself, various video signals and data can be distributed to each subscriber in good quality without loss through existing coaxial cable.

In addition, it is possible to compensate the line distribution loss without using a separate amplifier, so that it is compatible with the existing installation, it is possible to facilitate the extension of the incoming cable due to additional subscribers without changing the existing system.

Therefore, several cables are connected from one subscriber line distribution device to each subscriber, which makes it difficult to manage due to the complexity of incoming line facility, excessive installation cost, deterioration of city aesthetics, deterioration of service quality and signal level. It can be prevented.

Therefore, it is a very useful design, such as reducing the additional material costs and installation costs, such as amplifiers, distribution devices and cables, as well as improved convenience in use.

1 is a block diagram of a general cable broadcasting system.

Figure 2 is a block diagram of a conventional branch line apparatus for cable broadcasting subscribers.

Figure 3 is an exemplary view showing a conventional branched cable broadcasting signal to each subscriber generation.

Figure 4 is a block diagram of the device of the present invention.

5 is an exemplary view of an installation state of the present invention device.

6a to 6c is a block diagram showing that the device of the present invention is installed compatible with the conventional branch.

※ Explanation of code for main part of drawing ※

16: circle track

20: signal branch

21, 23: first and second deflector

22, 24: first and second amplifier

25: low pass filter

26: impedance matcher and broadcast signal splitter

27: Switching Mode Power Supply

28, 29: first and second choke coil

Claims (1)

A first choke coil 28 for transmitting only the voltage from the voltage transmitted through the original line 16 and the broadcast signal in the mixed state to the next amplifying distributor; A signal branch unit 20 which transmits the broadcast signal to the next amplification distributor in the mixed state and the voltage transmitted through the original line 16 to the first amplifier 21; A first diplexer (21) which separates a high frequency video signal and a low frequency data from the broadcast signal branched through the signal branch unit 20 and transmits the low frequency data to the first amplifier; A first amplifier 22 for amplifying the image and data signals inputted through the first diplexer 21 to a predetermined level; A second deflector (23) which separates the high frequency video signal and the low frequency data from the broadcast signals transmitted from subscribers and transfers the low frequency data to the second amplifier; A second amplifier 24 for amplifying the image and data signals inputted through the second deplexer 23 to a predetermined level; A low pass filter 25 for removing various noise signals included in broadcast signals inputted from the first amplifier 22 and subscribers and transmitting only pure broadcast signals; Impedance matcher and broadcast signal divider for matching the broadcast signal received through the low pass filter 25 with the antenna impedance of the subscriber TV receiver and distributing it through several taps T1-Tn to deliver to each subscriber home. 26; A second choke coil 29 for extracting only the voltage from the voltage transmitted through the original line 16 and the broadcast signal in the mixed state; And a switching mode power supply (27) for rectifying the AC voltage input through the second choke coil (29) to a constant DC voltage and providing it to each part.