KR200255018Y1 - RF signal seperator capable of remote control for Cable TV - Google Patents

Abstract

The present invention connects subscribers through a branch circuit including a signal (RF + AC) classification filter transmitted from the Internet and cable TV stations, and each subscriber deciphers the civic prevention code in the converter and then watches TV. In the Internet and cable TV viewing system to enable

Add user ID recognition means to the tap-off without using a converter;

ID recognition means is a modem that receives the subscriber ID from the signal (RF) classified by the signal (RF + AC) classification filter and provides to the microcomputer,

A decoding circuit for releasing the compressed signal of the video signal and the audio signal branched from the directional coupler of the branching machine,

A variable attenuator that adjusts the level of the decoded signal and provides it to the divider,

A switch matrix directly connected to the output port of the distributor and outputting only at the output command of the corresponding output port of the microcomputer,

Internet and cable TV with subscriber control function, comprising a power supply for converting AC power classified by signal (RF + AC) classification filter into DC power and providing the modem, microcomputer and switch matrix respectively Device.

Description

Internet and cable TV branching device with subscriber control function {RF signal seperator capable of remote control for Cable TV}

The present invention relates to the Internet and cable TV branching device to recognize the user ID by adding an ID recognition means to the existing cable TV splitter, and to control whether or not the signal supply with the user.

In general, the cable network configuration receives a broadcast signal transmitted from a broadcasting station 1 called a head end through an outdoor optical transceiver (ONU) 2 as shown in FIG. 1, followed by a branch amplifier 3 for cable line compensation and an extension amplifier. After amplifying the signal in (4), the signal is branched to the branching devices 5 and 5 'and delivered to the converter 6 of the subscriber. In the converter 6, the eavesdropping code is decrypted and made to be viewed on the user TV.

The tap-changer 5 separates the broadcast signal RF from the signal RF + AC of the headend (broadcasting station) 1 as shown in FIG. 2 to perform a function of branching to the subscriber.

Signal (RF + AC) classification filter (51) which separates broadcast signal (RF) from signal (RF + AC) and sends it to directional coupler (52) for distributor, and separates power supply (AC) and sends to coupling filter (53). Wow,

A distributor 54 which receives a broadcast signal RF through the directional coupler 52 for distribution and distributes it to each subscriber;

It consists of a signal (RF + AC) combining filter 53 which combines another broadcast signal RF through the directional coupler 52 and a power supply through the classification filter 51 and sends it to the other distributor 5 '.

FIG. 3 is a diagram showing a state in which subscribers 7-1 to 7-n are connected by using the tap-off 5 shown in FIG. 2, and the signal (RF +) transmitted from the head end 1 corresponding to the broadcasting station. AC) is extended from the tap-off 5 to the next tap-off 5 ', and in this case, an extension amplifier 4 is installed and used at a predetermined interval to compensate for the reduction of the signal due to the extension. The decryption broadcast signal RF is applied to each output port P1-Pn of the tap-changer 5 by the converter 6 installed next to the TVs of the subscribers 7-1 to 7-n. To connect.

The converter 6 may illustrate the configuration as shown in FIG. 4. The converter 6 recognizes an ID assigned to each converter among the signals RF through the band pass filter 6-9 and provides the same to the microcomputer 6-2. The two-way communication modem 6-3, the phase synchronization loop 6-4, and the tuner 6-1, which perform the synchronization of the input RF signal and the data phase synchronization of the microcomputer 6-2. A demodulator 6-5 for demodulating the signal through the demodulator, a descrambler 6-6 for decrypting the image from the demodulation signal through the demodulator 6-5, and a decoded image through the descrambler 6-6. A screen display (6-7) for displaying on the screen based on the display, a modulator (6-8) for restoring the image through the screen display (6-7) to an RF signal, and a demodulator (6-5). The remote control processing the audio signal from the demodulation signal through the audio processing unit (6-10) to send to the audio output port, and the command input so that the microcomputer (6-2) can be recognized Key input section 6-11. The descrambler 6-6 performs the scramble decryption function to prevent the city RF of the signal RF, and if the scrambler does not have a scramble function, it actually shorts the terminal of the tap-off 5 to achieve the purpose. One, however, is the situation where there is a limit to the management of many human resources and data.

An example of such a converter is Samsung Electro-Mechanics' converter (CTC-9625E).

However, this method prevents the city office by installing an additional converter in the subscriber's premises at the output port of the corresponding branch for each subscriber. Therefore, additional converters need to be installed for each subscriber, and the cost of the converter is high, and the Internet broadcasting operator requires a considerable initial capital investment.

The present invention aims to solve this problem, and an object of the present invention is to provide a branch device for recognizing a user's ID without using a converter.

To this end, the present invention adds an ID recognition means to an existing branch to recognize the user ID, and configures the microcomputer to control whether the signal is supplied to the user.

1 is a general cable TV network configuration,

2 is a schematic diagram of a cable TV turnout,

3 is a diagram illustrating a typical cable TV subscriber connection configuration;

4 is a block diagram of a typical converter;

5 is a configuration of the branching device of the present invention,

6 is a view illustrating a wiring configuration of a branching apparatus of the present invention.

* Explanation of symbols for the main parts of the drawings

100; ID recognition means 110; Microcomputer

120; modem 130; attenuator

140; switch matrix 150; power supply

160; directional coupler 170; amplifier decoder

That is, the present invention connects subscribers through a branch circuit including a signal (RF + AC) classification filter transmitted from the Internet and cable TV stations, and each subscriber decodes the civic prevention code in the converter. In the Internet and cable TV viewing system to enable TV viewing,

Add user ID recognition means to the tap-off without using a converter;

ID recognition means is a modem that receives the subscriber ID from the signal (RF) classified by the signal (RF + AC) classification filter and provides to the microcomputer,

A decoding circuit for releasing the compressed signal of the video signal and the audio signal branched from the directional coupler of the branching machine,

A variable attenuator that adjusts the level of the decoded signal and provides it to the divider,

A switch matrix connected directly to the output port of the distributor and outputting only at the output command of the corresponding output port of the microcomputer, and

To provide an internet and cable TV branching device having subscriber control function including an AC power supply classified into a signal (RF + AC) classification filter into a DC power supply and provided to the modem, the microcomputer and the switch matrix, respectively. will be.

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

5 is a block diagram of the present invention, the signal (RF + AC power) transmitted from the Internet and cable TV station is connected to the subscriber through a branch (5) including a signal (RF + AC) classification filter 51, each In the existing Internet and cable TV viewing system that allows the subscriber to decrypt the city hall prevention code in the converter (6) to allow TV viewing,

Coupling the user ID recognizing means 100 to the tap-off 5 without using the converter 6;

ID recognition means 100 is a modem (120) for receiving a subscriber ID from the signal (RF) classified by the signal (RF + AC) classification filter 51 and provides it to the microcomputer (110),

A decoding circuit 170 for releasing the compressed signal of the video signal and the audio signal branched from the directional coupler 52 of the branching device 5,

Variable attenuator 130, which adjusts the decoded signal level to provide to divider 54,

A switch matrix 140 directly connected to the output port of the distributor 54 and outputting only at the output command of the corresponding output port of the microcomputer 110;

Including a power supply 150 for converting the AC power classified by the signal (RF + AC) classification filter 51 into a DC power supply to the modem 120, the microcomputer 110 and the switch matrix 140, respectively Configure. For convenience of description, the existing branch 5 and the ID recognition unit 100 are combined to represent the branch device 200. And the branch device 200 is installed in the same housing.

The signal RF classified by the signal RF + AC classification filter 51 may be configured to be simultaneously applied to the modem 120 and the directional coupler 52 of the branch switch 5 through the directional coupler 160. Alternatively, the directional coupler 160 may be configured to be directly applied to the modem 120 and the directional coupler 52 without using the directional coupler 160.

Figure 6 is a configuration of the installation state using the configuration of the present invention, the signal (RF + AC) through the head end 1 is shown through the branch device 200 can be used without using a separate converter.

The present invention configured as described above separates the image-related signal RF from the branching unit 5 from the signal RF + AC applied from the head end 1, and in this case, the signal RF through the classification filter 51. Is applied to modem 120 and directional coupler 52 via directional coupler 160. The modem 120 receives an ID based on ID recognition channel data included in the signal RF and applies it to the microcomputer 110. Of course, the headend 1, including the subscriber's information, must send a signal to the tap-changer 5 side.

Meanwhile, the signal RF through the directional coupler 52 is set by adjusting the attenuation rate according to the distance of the subscriber through the variable attenuator 130. The signal RF varied according to the set attenuation rate is provided to the subscriber through the distributor 54. However, the present invention switches the signal (RF) supply to the subscriber via the switch matrix 140 instead of the subscriber's connection via the distributor 54. That is, only the subscriber who paid the fee based on the subscriber information through the modem 120 and the microcomputer 110, the microcomputer 110 turns on the switch matrix 140, and thus corresponds to the corresponding port output of the distributor 54. It can be connected to the target subscriber. In this case, the switch matrix 140 itself uses a general configuration in which the contact of the column side is turned on when the lateral signal is input by forming a normal matrix state. However, the present invention functions to enable the microcomputer 110 to recognize the ID recognition through the modem 120 so as to drive the switch matrix 140, and when the switch is operated, the output of the corresponding port of the splitter 54 may operate the switch matrix. By selectively turning on or off through the subscriber, whether or not to view the subscriber to the head end (1) can be controlled. Therefore, it is possible to perform more convenient control functions without using a converter installed separately for each subscriber, and installation cost is reduced because no converter is required.

The present invention described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be apparent to those who have

As described above, the present invention allows the output of the corresponding port of the distributor to be selectively turned on or off through the switch matrix when the switch is operated, so that the headend side can control the viewing of the subscriber. Therefore, it is possible to perform more convenient control functions without using a converter installed separately for each subscriber, and installation cost is reduced because no converter is required.

In addition, since the variable attenuator is installed, it is economical and convenient to install because it can be adjusted without using different standards in order to adjust the signal level to a certain level according to the distance between the head end and the distributor.

Claims (2)

Signals from the Internet and cable TV stations (RF + AC power supply) connect subscribers via a branching device 5 including a signal (RF + AC) classification filter 51, each of which is connected to the municipal office in a converter (6). In the Internet and cable TV viewing system to decrypt TV to prevent watching TV, Coupling the user ID recognizing means 100 to the tap-off 5 without using the converter 6; ID recognition means 100 is a modem (120) for receiving a subscriber ID from the signal (RF) classified by the signal (RF + AC) classification filter 51 and provides it to the microcomputer (110), A decoding circuit 170 for releasing the compressed signal of the video signal and the audio signal branched from the directional coupler 52 of the branching device 5, Variable attenuator 130, which adjusts the decoded signal level to provide to divider 54, A switch matrix 140 directly connected to the output port of the distributor 54 and outputting only at the output command of the corresponding output port of the microcomputer 110; Including a power supply 150 to convert the AC power classified by the signal (RF + AC) classification filter 51 into a DC power supply to the modem 120, the microcomputer 110 and the switch matrix 140, respectively Internet and cable TV branch apparatus having a subscriber control function, characterized in that configured. The signal RF classified by the signal RF + AC classification filter 51 is transferred to the modem 120 and the directional coupler 52 of the branch switch 5 through the directional coupler 160. Internet and cable TV branch apparatus having a subscriber control function configured to be applied at the same time.