KR20030066929A - Active type directional coupler - Google Patents

Abstract

PURPOSE: An active directional coupler is provided to automatically connect/disconnect a network to/from a user and effectively monitor the network. CONSTITUTION: An active directional coupler has an input/output unit and a plurality of distributors(2a,2b,2c,2d,2e,2f,2g) for distributing a broadcasting signal inputted through the input/output unit to users. The active directional coupler includes a switching unit(10) composed of ON/OFF switches(S1-S8), an RF modem(11) for communicating information with a broadcasting center through the input/output unit, a CPU(12) for outputting a control signal for controlling each of the switches that connect the distributors with the users according to control information provided by the broadcasting center, and a switch driver(13) for driving each of the switches according to the control signal of the CPU.

Description

Active branch switch {Active type directional coupler}

The present invention relates to an active branch, particularly in the place where the video and data transmission service is performed through the network, such as CATV, MATV, SMATV, etc. When the user joins or terminates the management staff does not go directly to the field automatically The present invention relates to an active branch that can be blocked and that network monitoring can be efficiently carried out, thereby preventing the illegal use of services.

Due to the diversification of broadcasting and communication media, high-speed communication is emerging as a transmission medium capable of instantaneous transmission of radio resources in a large area, and the potential market for the high-speed communication that is rapidly spreading is relatively present. It will expand into a huge market in the future.

1 is a diagram illustrating a network such as CATV (cable TV), MATV, SMATV, and the like currently provided.

A broadcasting center that processes the video signals captured by the camera or video signals received through the antenna and transmits them to the service subscriber (user) through the network line, and manages the service subscriber and establishes an additional service network provided to the subscriber. Wow,

A network line interconnecting the broadcasting center and subscribers, a network amplifier installed in the middle of the network line to amplify a transmission signal, and branched data transmitted from the broadcasting center in the middle of the network line are provided to the service subscriber. It is comprised by the diverter D to make.

2 shows the configuration of a conventional tap-off D,

An input / output unit (1) for implementing signal input / output of a broadcasting center side and a user side through a network line; It is composed of a plurality of distributors (2a ~ 2g) for supplying to the user side by branching the down signal input through the input and output unit 1 in several ways.

Conventional branch (D) is composed of a plurality of subgroup distributors gradually spread in several ways from the distributor (2a) of the upper group connected to the network line, through the distributors (2d ~ 2g) present in the lowest group The user side is connected.

In the conventional branching device (D) configured as described above, data transmitted from the broadcasting center side is supplied to the distributor 2a of the upper group through the input / output unit 1, and the data passing through the distributor 2a is the distributor of the lower group. It is supplied to the user through (2b ~ 2g).

However, in the conventional branching system (D), when the broadcasting center side and the user side are to be interconnected, the administrator must electrically connect the lowest group of the branching branch and the user side through a separate manual operation, and the administrator is required to cancel the user. The management of the network was very cumbersome because the user had to go out and disconnect the tap-off and the user.

Accordingly, the present invention for solving the above problems is to install a switch of the on / off function at the output terminal of the branch to connect the data supplied from the broadcasting center through the network line to the user side of the actual consumer, the central control panel of the broadcasting center By configuring the control means to selectively turn on / off the switch in accordance with the control information transmitted from the control staff, the management staff when the user joins or terminates the video and data transmission service through the network, such as CATV, MATV, SMATV, etc. It aims to provide an active diverter that can automatically connect and disconnect the network without going out to the field, and can effectively perform network monitoring to prevent the unfair use of the service.

The present invention for achieving the above object,

An input / output unit configured to implement signal input / output of a broadcasting center side and a user side through a network line; In the splitter consisting of a plurality of distributors for branching the broadcast signal input through the input and output to the user side,

A switching unit which is provided with an on / off switch respectively at the distributor output terminal of the lowest group connected to the user side;

An RF modem communicating information with a broadcasting center through the input / output unit;

A CPU for outputting a control signal for on / off control of each switch connecting the distributor and the user side according to the control information supplied from the broadcasting center;

A switch driver for driving each switch according to the output control signal of the CPU; Characterized in that configured to include.

And a first sensor for sensing a temperature of the place where the tap-off is installed, and second and third sensors for sensing a voltage and a current of a signal passing through the tap-off, wherein the CPU is detected from the sensors. Collect information and supply it to the broadcasting center.

1 is a view showing a typical TV network.

2 is a block diagram showing a conventional tap-off.

Figure 3 is a block diagram showing an active branch of the present invention.

※ Explanation of code for main part of drawing

1: input / output part, 2a ~ 2g: distributor,

10: switching unit, S1 ~ S8: switch,

11: RF modem, 12: CPU,

13: switch driver, 14 ~ 16: sensor

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

In the description of the present invention, the same components as in the prior art will be denoted by the same reference numerals to avoid redundant description.

The biggest feature of the present invention is to install the active control means capable of on / off control at the output end of the divider (2d ~ 2g) of the lowest group of the branching machine to automatically control this switching means, so that the administrator when the user joins or terminates It does not have to go to the site one by one.

The active control means includes a switching unit 10, an RF modem 11, a CPU 12, a switch driver 13, and first to third sensors 14 to 16.

As shown in FIG. 3, the switching unit 10 connects and installs switches S1 to S8 capable of on / off control at the output terminals of the dividers 2d to 2g of the lowest group constituting the branching machine D. Configure.

The switches S1 to S8 are controlled by the switch driver 13 operated by a control signal of the CPU 12 to be set up later.

The RF modem 11 communicates with the central control panel of the broadcasting center through the input / output unit 1.

The CPU 12 outputs a control signal for selectively turning on / off the switches S1 to S8 of the switching unit 10 according to the control information supplied from the central control panel of the broadcasting center, and each sensor to be followed up. It collects information on the temperature, voltage, and current of the branch (D) detected from the (14 ~ 16) and transmits the information through the RF modem 11 when requested by the central control panel.

The switch driver 13 controls on / off of each of the switches S1 to S8 constituting the switching unit 10 according to the switching control signal output from the CPU 12.

On the other hand, the first to third sensors 14 to 16 are installed in the present invention, the first sensor 14 detects the ambient temperature of the place where the tap-off (D) is installed and supplies to the CPU 12, The second sensor 15 senses a voltage passing through the tap-off and supplies it to the CPU 12, and the third sensor 16 has a function of sensing a current passing through the tap-off and supplying it to the CPU 12. The information detected by the first to third sensors 14 to 16 are collected by the CPU 12 and supplied to the central control panel of the broadcasting center.

Referring to the operation of the active branch of the present invention configured as described above are as follows.

First, when a user joins or cancels a new network, the administrator can implement the network connection and blocking centrally without going out to the field.

That is, when a new subscriber is generated, a CPU 12 outputs a control command for turning on a switch of the switching unit 10 formed in the distributor of the tap-off D connected to the place where the subscriber is located. ) Outputs a switching control signal to the switching driver 13 to switch the corresponding switches S1 to S8 on according to a control command transmitted through the RF modem 11, and the switching driver 13 switches. The corresponding switch of the unit 10 is turned on so that a newly subscribed user can use the service provided by the broadcasting center.

When the user cancels, the corresponding switch is turned off by the above control operation so that the user can no longer use the service.

As described above, when a user newly joins or cancels, the administrator does not have to go out to the site directly, thereby increasing work efficiency.

In addition, by using the present invention it is possible to remotely check the state of the branch (D) installed on the user side.

That is, the first to third sensors 14 to 16 sense the temperature of the place where the tap-off D is installed, the voltage level and the current level of the signal passing through the tap-off, and supply the same to the CPU 12. 12 transmits through the RF modem 11 at the request of the central control panel, so that the administrator can accurately determine the state of the branch (D) at that time.

In addition, the CPU 12 receives the information detected from the first to third sensors 14 to 16, and since the detected value exceeds a predetermined level, it is determined that the tap-off D is in an abnormal state. If there is no request from the control panel, the fault condition is transmitted to the central control panel to deal with it.

In addition, if the present invention is used in connection with the subscriber management system of the broadcasting center, when the service usage fee is overdue, the switch automatically connects the corresponding user so that the user cannot use the service anymore, so that the fee is paid one by one. You don't have to be reminded and you can effectively manage your subscribers.

As described above, the present invention installs an on / off switch at the output terminal of the branch that connects the data supplied from the broadcasting center through the network line to the user, the actual consumer, and is transmitted from the central control panel of the broadcasting center. By configuring the control means to selectively control the switch on / off according to the control information, the management staff directly on site when the user joins or cancels the video and data transmission service through the network, such as CATV, MATV, SMATV, etc. Networks can be automatically connected and disconnected without going out, and network monitoring can be effectively performed, and an active branch can be expected to prevent unjust use of services.

Claims (2)

An input / output unit (1) for implementing signal input / output of a broadcasting center side and a user side through a network line; In the splitter consisting of a plurality of distributors for branching the broadcast signal input through the input and output unit 1 to the user side, A switching unit (10) provided with on / off switches (S1 to S8) respectively provided at the output terminal of the lowest group connected to the user side; An RF modem 11 communicating information with a broadcasting center through the input / output unit 1; A CPU 12 for outputting a control signal for on / off control of each of the switches S1 to S8 connecting the distributor and the user side according to the control information supplied from the broadcasting center; A switch driver 13 for driving each of the switches S1 to S8 according to the output control signal of the CPU 12; Active diverter, characterized in that configured to include. The method of claim 1, It further comprises a first sensor 14 for sensing the temperature of the place where the tap-changer is installed, and the second and third sensors (15, 16) for sensing the voltage and current of the signal passing through the tap-off, CPU ( 12) an active branch, characterized in that to collect the information detected from the sensors and to supply to the broadcasting center.