KR200222547Y1 - Line branch device for cable broadcasting subscriber - Google Patents

Abstract

The present invention relates to a cable broadcasting subscriber line branching device, and in particular, a synthesized signal separator (1) for separating each signal when it is transmitted from the central broadcasting center; A video signal distributor (2) for distributing the video signal to the first and second impedance matchers (3) (4); First and second impedance matchers (3) (4) for mutually matching antenna impedances of the subscriber TV receiver; Several solid state switches (S1-Sn) for selectively transmitting the video signals output through the first and second impedance matchers (3) (4) to the subscriber side; Several taps (T1-Tn) for selectively connecting each subscriber TV receiver with a cable; A power supply unit 5 rectifying the AC voltage to a DC voltage to supply the modem unit 6 and the control unit 7; A modem unit 6 for demodulating and outputting each step control RF switching data to the control unit 7; And a control unit 7 which analyzes each step control RF switching data input through the modem unit 6 and generates on or off signals corresponding to the analysis signals to several contactless switches S1-Sn, It is easy to manage the fee and control the subscribers, and when the unpaid fee occurs, it can block the provision of the service while avoiding friction with the party, and also greatly reduce the occurrence of manpower and expenses due to the connection and disconnection of the cable. In addition, it is possible to prevent safety accidents that may occur during cable work.

Description

Line branch device for cable broadcasting subscriber}

The present invention relates to a cable broadcasting subscriber line branching device, and more specifically, to provide a contactless switch between an impedance matching unit in a cable broadcasting subscriber line branching device and a tap to which a cable of each subscriber is selectively coupled. The power supply, modem, and control unit are installed inside, so that the cable itself connected to each subscriber can be selectively disconnected or connected by sending only control signals from the central broadcasting center of the remote site. It is designed to reduce the enormous manpower and expense required for cable connection and disconnection because it is very convenient for the users to control, avoid friction with unpaid fees, and can be disconnected and connected remotely even if subscribers change due to moving. will be.

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 the personal computer 14 and combine 15 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.

However, in the conventional cable broadcasting subscriber line branching apparatus, as shown in FIG. 3, several (usually between 2 and 8) subscriber cable connection steps T1-Tn are provided outside one case, and inside the case. When the video signal including the voltage is transmitted from the central broadcasting center, the video signal distributor 2 which separates the broadcast signal and the power supply voltage and delivers the received signal on a continuous line, and the subscriber TV connected through the tap and cable It consists of several impedance matchers (3) (4) for mutual matching with the antenna impedance of the receiver.

However, in the cable broadcasting subscriber line branching device having such a configuration, when a specific person requests a new subscription to satellite broadcasting and cable TV or a general cable broadcasting company, or an existing subscriber requests a release, an official person visits the subscriber's house. Or cable connection or short-circuit by moving to the place where the subscriber's line branch device is installed, it may cause a lot of manpower and expense, and there may be a safety accident during such work. It is very difficult to control, and the subscriber must pay the fee by notifying and visiting when the unpaid fee occurs. Therefore, friction with the subscriber can not be avoided in the process or in the process of forcibly cutting the cable. When the subscriber's customer changes When a new person asks to join afterwards, there is a hassle that needs to be reconnected. In some cases, a conscientious subscriber can steal the video signal without paying by directly connecting the disconnected cable. There is such a problem.

The present invention has been made to solve such a conventional problem, so that the cable itself connected to each subscriber can be selectively disconnected or connected to specific subscribers by additionally transmitting only a control signal from a central broadcasting center of a remote site. You can easily manage your charges and control each subscriber, and you can cut off wired services without friction with the parties when you have unpaid fees. Cable can be blocked and connected to prevent the occurrence of manpower and expenses due to cable connection and disconnection, as well as to prevent the occurrence of safety accidents that may occur during the work. The purpose is to provide a device.

The above object of the present invention is a composite signal separator for separating the respective signals and at the same time a part of a continuous line when the AC voltage and RF switching data for each tap control to the various video signals are transmitted from the central broadcasting center; A video signal distributor for distributing the video signal received through the synthesized signal splitter to first and second impedance matchers; First and second impedance matchers for mutually matching antenna impedances of the subscriber TV receiver connected to the video signal splitter and each tap; In response to the output signal of the control unit in the state of being installed between each output terminal of the first and second impedance matcher and several subscriber cable connection taps are output through the first and second impedance matcher Several solid state switches for selectively transmitting a video signal to a subscriber; A plurality of taps fixedly installed on the outside of the case in series connection with the solid state switch to selectively connect each subscriber TV receiver via a cable; A power supply unit rectifying the AC voltage separated and output through the synthesized signal separator into a predetermined DC voltage and supplying the same to the modem unit and the controller; A modem unit for demodulating and outputting each step control RF switching data separated and output through the synthesized signal separator to a control unit; Analyze each step control RF switching data transmitted from the central broadcasting center and input through the modem unit to generate on or off signals corresponding to the analysis signal to several contactless switches so that video signals can be delivered to subscribers and This can be achieved by configuring the control unit to not transmit video signals to the subscribers who are not paying the fee.

Therefore, the broadcaster must connect all the cables that can be connected to the TV receiver of every home or office in a particular building that can be subscribed to the taps of the cable broadcasting branch line devices installed in the middle of the initial cable installation work. Once connected, the central broadcasting center assigns the code for the wire branch subscriber line branch device and the taps installed in the branch device to interconnect the impedance matcher only through the switches connected to the appropriate subscriber at the remote site. It is possible to block the connected state, so it is easy to manage the fee and control each subscriber, and to avoid friction with the party when the unpaid fee occurs, and also prevent the occurrence of manpower and expenses due to cable connection and disconnection. Not only can it happen, but it also does not lead to safety accidents It can be prevented.

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

2 is a block diagram of an apparatus of the present invention.

Figure 3 is a block diagram of a conventional branch line apparatus for cable broadcasting subscribers.

※ Explanation of code for main part of drawing ※

1: Synthetic Signal Separator 2: Video Signal Splitter

3,4: first and second impedance matcher 5: power supply

6 modem portion 7 control unit

S1-Sn: Solid state switch T1-Tn: Cable connection tap

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

2 shows a block diagram of an apparatus of the present invention.

According to this, the AC voltage and the RF switching data for each step control are applied to various video signals. A synthesized signal separator (1) which separates each signal when it is transmitted from the central broadcasting center and transfers a portion of the signal to a continuous line;

An image signal divider (2) for distributing the image signal received through the composite signal separator (1) to first and second impedance matchers (3) and (4);

First and second impedance matchers (3) (4) for mutually matching antenna impedances of the video signal divider (2) and the subscriber TV receiver connected to each of the tabs (T1-Tn);

On / off in response to an output signal of the controller 7 in a state provided between each output terminal of the first and second impedance matchers 3 and 4 and a plurality of subscriber cable connection steps T1-Tn. Several solid state switches (S1-Sn) which operate to selectively transmit image signals output through the first and second impedance matchers (3) (4) to the subscriber side;

Several steps (T1-Tn) fixedly installed on the outside of the case (100) in a state of being connected in series with the solid state switches (S1-Sn) to selectively connect each subscriber TV receiver with a cable;

A power supply unit 5 for rectifying the AC voltage separated and output through the synthesized signal separator 1 into a predetermined DC voltage and supplying it to the modem unit 6 and the control unit 7;

A modem unit 6 for demodulating and outputting each step control RF switching data separated and output through the synthesized signal separator 1 to the control unit 7;

Each step control RF switching data transmitted from the central broadcasting center and inputted through the modem unit 6 is analyzed to generate an on or off signal corresponding to the analysis signal to several contactless switches S1-Sn. It is characterized in that it is configured as a control unit 7 so that the video signal is transmitted to the non-subscriber or non-payment subscribers, such that the video signal is not transmitted.

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

First, the broadcasting company installs the cable branch equipments for the cable broadcasting subscribers equipped with the device in the middle of the center to respond to the concentration of subscribers when the initial cable construction is carried out. Make sure you have enough taps to connect to the receiver.

Of course, the taps installed in the cable branch devices for each cable broadcasting subscriber may be connected through a cable and a TV receiver of every office in each home or a specific building that can be a subscriber.

Thereafter, the central broadcasting center assigns a code for the wire branch subscriber line branch device and the taps installed in the branch device so that only the taps connected to the appropriate subscribers at the remote site are interconnected or connected to the impedance matcher through the switches. To block.

Meanwhile, when transmitting various video signals and AC voltages through a relay cable in a central broadcasting center such as a specific cable broadcasting or K-bang broadcasting, each step control RF switching data for distinguishing between subscribers and non-subscribers is simultaneously transmitted. Each signal is separated from the composite signal separator 1, which is embedded in the cable broadcasting subscriber line branching device and installed between the input terminal and the output terminal, to the video signal distributor 2, the power supply unit 5, and the modem unit 6. At the same time, some of them are sent to the continuous track.

Therefore, since the image signal received through the composite signal separator 1 is distributed to the first and second impedance matchers 3 and 4 through the image signal divider 2, the first and second impedances are divided. After the antenna impedances of the subscriber TV receivers connected to the respective taps T1 -Tn are matched with each other in the matchers 3 and 4, a solid state switch which is in an on state among several contactless switches S1 -Sn. It outputs to each tap T1-Tn side only through (S1-Sn).

On the other hand, since the AC voltage separated and output through the composite signal separator 1 is rectified to DC voltage through the power supply unit 5 and then supplied to the modem unit 6 and the control unit 7 the modem unit 6 And the control unit 7 can be operated by this DC voltage.

When the driving voltage is supplied from the power supply unit 5 as described above, the modem unit 6 demodulates each step control RF switching data separated and output through the synthesized signal separator 1 and outputs the demodulated RF switching data to the control unit 7. Therefore, the control unit 7 analyzes each step control RF switching data transmitted from the central broadcasting center and input through the modem unit 6 to turn on or corresponding to the analysis signal to several contactless switches S1-Sn. It can generate an off signal.

Accordingly, several contactless switches S1-Sn provided between each output terminal of the first and second impedance matchers 3 and 4 and several subscriber cable connection taps T1-Tn are provided. Since it is turned on / off in response to the output signal of the controller 7, the video signal output through the first and second impedance matchers 3 and 4 may be selectively transmitted to the subscriber side.

That is, the above several solid state switches (S1-Sn) can be turned on and off in the control unit 7 itself in response to a control signal transmitted as RF data from the central broadcasting center of the remote location, so that the connection state of the cable is intact. It is possible to remotely transmit video signals to existing subscribers at remote sites, and to not transmit video signals to non-subscribers or non-paying subscribers.

As described above, according to the present invention, in the central broadcasting center of the remote site, the cable branching device for the wire broadcasting subscriber and the taps installed in the branching device are assigned codes, so that only the taps connected to the appropriate subscribers are matched through the switches. It is possible to interconnect with the device or to block the connected state, so that it is easy to manage the fee and control the subscribers, and when the nonpayment occurs, the service can be blocked while avoiding friction with the party. It is a very useful invention that can greatly reduce the occurrence of manpower and expenses due to the connection and disconnection of the wire, as well as to prevent safety accidents that may occur during cable work.

Claims (1)

An AC signal and RF switching data for each tap control to the various video signals, when the signal is transmitted from the central broadcasting center, the synthesized signal separator 1 for separating the respective signals and transferring some of them to a continuous line; An image signal divider (2) for distributing the image signal received through the composite signal separator (1) to first and second impedance matchers (3) and (4); First and second impedance matchers (3) (4) for mutually matching antenna impedances of the video signal divider (2) and the subscriber TV receiver connected to each of the tabs (T1-Tn); On / off in response to an output signal of the controller 7 in a state provided between each output terminal of the first and second impedance matchers 3 and 4 and a plurality of subscriber cable connection steps T1-Tn. Several solid state switches (S1-Sn) which operate to selectively transmit image signals output through the first and second impedance matchers (3) (4) to the subscriber side; Several steps (T1-Tn) fixedly installed on the outside of the case (100) in a state of being connected in series with the solid state switches (S1-Sn) to selectively connect each subscriber TV receiver with a cable; A power supply unit 5 for rectifying the AC voltage separated and output through the synthesized signal separator 1 into a predetermined DC voltage and supplying it to the modem unit 6 and the control unit 7; A modem unit 6 for demodulating and outputting each step control RF switching data separated and output through the synthesized signal separator 1 to the control unit 7; Each step control RF switching data transmitted from the central broadcasting center and inputted through the modem unit 6 is analyzed to generate an on or off signal corresponding to the analysis signal to several contactless switches S1-Sn. And a control unit (7) for transmitting a video signal to a non-subscriber or a non-paying subscriber or a non-paying subscriber.