KR20080082129A - Sub-tap device - Google Patents

Abstract

A sub-tap is provided to reduce a defective connection between a connector and a cable by connecting two or more third cables each with a different radius to the connector. The first cable(C1) to which an RF signal is inputted, the second cable(C2) from which the RF signal is outputted, and a plurality of third cables(C3) connected with a plurality of subscriber terminals(300) are connected. The first to third cables are connected with a housing. A module, which includes a signal processing unit(60) for performing signal processing to allow the signal inputted through the first cable to be transmitted to the subscriber terminals through the third cables and a signal shielding unit(70) for shielding an abnormal signal inputted through the third cables, is connected with the housing. The housing includes a port to which the plurality of third cables are connected.

Description

Sub-Tap device}

1 is a perspective view of a sub-tab according to the related art,

2 is a block diagram of a system including a sub-tap device according to the present invention;

3 is a first embodiment showing the internal configuration of a sub-tap device according to the present invention;

4 is a second embodiment showing the internal configuration of a sub-tap device according to the present invention;

5 is a block diagram showing the internal configuration of the signal shield of the sub-tap device according to the present invention;

6 is a view of a sub-tap device according to the present invention;

7 is a view of a sub-tap device having a test port according to the present invention;

8 is a connection diagram of the test port and the signal shield according to the present invention;

9 is a perspective view of a connector applied to the present invention.

The present invention relates to a sub-tap device installed in the upper side of the national pole installed in the country, the sub-tap device is a device for mediating and distributing the network between the head end and the subscriber end.

Referring to FIG. 1, the configuration of the conventional sub-tab and its problems are as follows.

First, the sub tap apparatus distributes or distributes a signal to another sub tap apparatus between the headend side transmitting a predetermined signal and the subscriber side receiving the signal, or filters and distributes the signal to the subscriber side. It also performs a function of synthesizing the signal transmitted from the subscriber side to the headend side.

As such, the sub tab device for mediating and coupling the head end side and the subscriber side is generally installed on the upper side of the pole, and includes a first cable C1 to which a signal transmitted from the head end side is input, and a sub signal different from the other. A second cable distributed through the tap device and a third cable C3 through which the signal is distributed to the subscriber are connected.

The sub-tab device of FIG. 1 may be divided into a housing 1 and a module 2 on which a substrate is installed, and the housing and the module are coupled by fastening the lock screw 3.

In addition, the third cable distributed to the subscriber side is connected to the plurality of ports 4 formed on the outer surface of the module through the connector 5, and if the board has an error, all the plurality of third cable connections are released. And, after releasing the lock screw was able to replace the module. That is, when the module is replaced, the operation of disconnecting the connector for the third cable connection release has to be made, there is a problem that the consumption of time and human cost is large.

In addition, the connector, which is a component for connecting the third cable to the port, is specified to pin only a cable having a predetermined radius as shown, and a 5C connector is used in a conventional sub-tap device. However, such a conventional 5C connector frequently causes a poor connection, and thus a connector capable of connecting with a cable having a larger radius is required.

In the case of checking the port due to such a poor connection, the test port is not formed outside in the conventional sub-tab, so it takes a lot of time to check it, and when abnormal power is introduced from the subscriber side through the third cable, the module board There was a problem that a malfunction may occur in the.

Accordingly, the present invention has been made to solve the above problems, and to provide a sub-tab provided with a signal shield to prevent abnormal power (noise) from flowing from the subscriber side.

In addition, it is intended to provide a sub-tap connected to the port via a connector to which at least two or more third cables having different radii can be connected.

In addition, since the plurality of ports to which the third cable is connected are formed in the housing, the subtab of the present invention is intended to provide a subtab that is easily replaceable without a separation of the third cable.

In addition, the sub-tab of the present invention is to provide a sub-tab that can be easily confirmed by the test port is formed separately from the plurality of ports to which the third cable is connected.

The sub tap according to the present invention for achieving the above object is connected to a first cable to which an RF signal is input, a second cable to output the RF signal, and a plurality of third cables connected to the plurality of subscriber terminals, The first to third cables are connected to a housing forming an external appearance, and the signal processing unit performs signal processing to transmit a signal input through the first cable to a subscriber end through the third cable. It characterized in that the module comprising a signal shield for shielding the abnormal signal input through the three cable.

In addition, a port to which a plurality of third cables are connected is formed in the housing.

In addition, the housing is formed with a port to which the third cable is connected and a test port connected to the common node, through which the equipment for current or voltage sensing is connected.

The third cable is connected to the port via a connector, and the connector is a connector to which at least two kinds of cables having different radii can be connected. A cable having a larger radius than the 5C cable can be connected to the connector of the present invention.

The module is detachable from the housing through screwing and releasing, and since the cable is not connected to the module part, only the module can be easily detached.

The signal shielding unit includes a first filter element for passing the RF signal output from the signal processor and a second filter element for passing a low frequency signal on a second path in parallel with the first path. When a current of a predetermined size or more flows from the subscriber end, a shielding element shielding a path is connected.

The signal processing unit converts and outputs a signal transmitted from the headend to a subscriber end via another sub tap or the third cable through the second cable; Filter means for filtering the signal output from the converting means; And distribution means for distributing and outputting the signal output from the filter means to be transmitted to the plurality of subscriber ends, and synthesizing the signal applied from the plurality of subscriber ends and sending the signal to the filter means.

As another embodiment of the present invention, the sub-tap includes: a housing having a first cable to which an RF signal is input, a second cable to which the RF signal is output, and a port to which a plurality of third cables connected to the plurality of subscriber terminals are connected; The control module is coupled to the housing detachably coupled to the signal processing to transmit the signal input through the first cable to the other sub-tab via the second cable, or to the subscriber end via the third cable It is configured to include.

In this case, the module includes a signal shield for shielding the abnormal power signal input from the subscriber terminal via a third cable, the signal shield is a first through the RF signal transmitted and received between the head end and the subscriber terminal; One path and a second path via the DC power supply and the abnormal power signal input from the subscriber end are configured in parallel.

Hereinafter, the subtab apparatus of the present invention will be described with reference to FIGS. 2 to 8.

FIG. 2 is a diagram schematically illustrating a system including a headend and a subscriber side to which a sub-tab of the present invention is mediated. The headend 200 is configured to provide a predetermined broadcast signal, a content signal, or a signal for an Internet service. It is a device on the operator side that sends out. In the present exemplary embodiment, the signal is transmitted through a cable network, and a sub tap device 100 is included at an end of the cable network, and the sub tap device 100 communicates with a plurality of subscriber stations 300. A communication path is formed.

The subscriber end 300 includes at least one of a general tap, an amplifier, a cable modem, a set-top box, a computer, or an image receiving device coupled through a connector of a sub-tap device and a third cable C3.

On the other hand, the sub-tap device 100 for mediating the signal between the head end 200 and the subscriber end 300 is configured as shown in the internal configuration of Figures 3 and 4, through the configuration block and The functions are as follows.

3 and 4 includes a signal processor 60 for distributing, synthesizing, and filtering signals, and the third cable C3 connected to the subscriber terminal 300 is connected through the connector 50. It is connected to a port formed in the tab device exterior.

In addition, the signal processing unit 60 is connected to the first cable (C1) input from the head end and the second cable (C2) for distributing and outputting the signal input through the first cable to another sub-tap device.

The sub-tap device 100 is a conversion means 61 for distributing and outputting the signal transmitted from the head end 200 to the subscriber end via the second cable or the other sub-tap via the second cable, and the conversion Filter means 62 for filtering the signal output from the means, and outputs the signal output from the filter means to be transmitted to the plurality of subscriber end 300, and synthesizes the signal applied from the plurality of subscriber end to the filter means It is configured to include a distribution means 63 for sending out.

As illustrated in FIG. 3, only the signal processor 60 is implemented in the module forming the sub-tap device 100a.

In addition, the embodiment illustrated in FIG. 4 illustrates that the signal processing unit 60 and the signal shielding unit 70 are both implemented in a module forming the sub-tap device 100b. The signal sequence unit shields an abnormal signal such as noise input from the subscriber terminal through the third cable C1. Thus, the signal shield is connected to each of the plurality of ports to which the third cable is connected.

The signal shielding unit 70 will be described in more detail with reference to FIG. 5 as follows.

In the signal shielding unit 70 of the present invention, a first filter element for passing the RF signal output from the signal processing unit 60 is connected on the first path P1, and the second path is parallel to the first path. On P2, a second filter element for passing a low frequency signal and a shielding element for shielding a path when a current of a predetermined size or more flows from the subscriber end are connected.

That is, the signal shielding unit 70 separates a signal path into a first path through which an AC RF signal passes and a second path through which a DC power signal passes, and when the signal path exceeds a predetermined size on the second path, As the shielding element for shielding the connection is connected, when the high current exceeding the reference value is applied from the subscriber terminal through the third cable, the module may be prevented from being damaged by shielding the path.

In this case, a capacitor is used as the first filter element, and a coil for passing a signal having a predetermined frequency (50 Hz to 60 Hz) is used as the second filter element. As the shielding element, a fuse for disconnecting a path when a current exceeding a predetermined size (for example, 15A) flows is used. Of course, this is merely illustrative and specifies that other elements performing the same function may be used.

6 is a diagram of a sub-tap device according to the present invention with reference to the appearance of the appearance as follows.

As described above, the sub-tap device includes a first cable C1 through which an RF signal is input, a second cable C2 through which the RF signal is output, and a plurality of third cables connected with the plurality of subscriber stations 300. C3) is connected.

At this time, the port 40 to which the first to third cables are connected is formed in the housing 10 forming the exterior and is internally connected to the substrate constituting the module 20.

The module 20 coupled to the housing is implemented with a signal processor 60 for performing signal processing such that the signal input through the first cable is distributed through the second and third cables, which is illustrated in FIG. 3. Same as the example.

In addition, the module 20 of the present invention is implemented with a signal shield 70 for shielding the abnormal signal input through the signal processing unit 60 and the third cable, which is the same as the embodiment shown in FIG. .

The housing 10 is provided with a plurality of ports 40 to which a plurality of third cables C3 are connected, and the module 20 is detachable from the housing 10 through fastening and releasing screws 30. Do.

At this time, since the plurality of ports 40 to which the third cable C3 of the present invention is connected are not formed on the module outer surface as shown in FIG. 1, but are formed in the housing, the plurality of third cables may be released even when the module is replaced. Only modules can be replaced without being removed.

In addition, the connector 50 connecting the third cable C3 and the port 40 of the present invention is not limited to a cable having a specific radius (thickness), but a connector to which at least two types of cables having different radii can be connected. to be. In particular, a conventional 5C cable, as well as a cable having a larger radius (7C, 10C, 12C, etc.) is a connector that is separated and coupled in multiple stages to enable connection.

Although this is referred to as a three-stage connector in the industry, the connector 50 of the present invention is a connector that can be connected even if the third cable connecting to the subscriber end in the future becomes thicker than 5C.

As shown in FIG. 9, the three-stage connector 50 of the present invention can be connected to at least two types of cables having different radii by separating or assembling the three-stage assembly, and the port 40 of the present invention is The three-stage connector is a port to be engaged.

As such, when a cable having a radius larger than 5C is connected to the subscriber end, a more stable communication line can be established, and a connection failure between the connector and the cable can be prevented. In addition, the connector 50 of the present invention can be connected by inserting a pin into a port as a pin connector, thereby preventing a poor connection between the port and the connector.

FIG. 7 is an embodiment similar to the appearance of the sub-tap device of the present invention shown in FIG. 6, but a test port 41 is formed separately from the port 40 to which a plurality of third cables are connected.

The test port 41 is a test port to which equipment for current or voltage sensing is connected. The test port 41 is connected to a port to which a third cable is connected and a common node. Therefore, it is easy to check whether a connection port is defective without releasing the cable through the test port. You can check it. This is illustrated in FIG. 8.

Looking at the features of the present invention shown in Figures 2 to 9, the module and the housing is detachable, the first feature is that the removable can be removed without the separation of the third cable.

In addition, the connector connecting the plurality of third cables and ports can be separated and assembled in multiple stages, which can be connected to a cable having a different radius can use a cable thicker than 5C can reduce the connection failure compared to the conventional In addition, since the connector connected to the sub-tap device of the present invention is connected by inserting a pin into the port as a pin connector, the second feature is that the connection failure can be reduced as compared with the related art.

In addition, since the signal shielding unit is implemented in addition to the signal processing unit implemented in the module, the RF signal and the power signal path are separated from each other, and a fuse is inserted into the second path so that the abnormal signal flowing from the subscriber end affects other circuits. The third feature is that it can be prevented.

Lastly, a test port connected to the port and the common node is formed outside the port to which the third cable of the present invention is connected, and the fourth feature is that the port defect can be easily confirmed.

Naturally, various embodiments may be derived that include at least one of the first to fourth features.

As described above, the sub-tap device according to the present invention has been described with reference to the illustrated drawings. However, the present invention is not limited by the embodiments and drawings disclosed herein, and the application by the person skilled in the art is within the scope of the technical idea. It is possible.

As described above, the sub-tab of the present invention may be provided with a signal shield to prevent abnormal power or noise from flowing in from the subscriber side through the third cable, thereby improving durability of the module substrate.

In addition, since at least two or more third cables having different radii can be connected to the connector, there is an effect that the connection failure between the connector and the cable is reduced.

In addition, since the plurality of ports to which the third cable is connected is formed in the housing of the sub-tab of the present invention, only the module can be easily detached without removing the third cable, thereby improving maintenance efficiency.

In addition, a test port is formed in the sub-tab of the present invention separately from the plurality of ports to which the third cable is connected, so that the defective port can be quickly confirmed during maintenance work, thereby improving the maintenance efficiency.

Claims (13)

A sub tap for distributing a signal transmitted from a headend to a plurality of subscriber ends, The sub tap is connected to a first cable to which the RF signal is input, a second cable to output the RF signal, and a plurality of third cables connected to the plurality of subscriber stations, The first to third cables are connected to the housing forming the appearance, The housing includes a signal processing unit for performing signal processing so that a signal input through the first cable is transmitted to the subscriber end through the third cable, and a signal shielding unit shielding an abnormal signal input through the third cable. Sub-tab, characterized in that the module is coupled. In claim 1, And a port through which the plurality of third cables are connected to the housing. In claim 2, The housing has a sub-tap, characterized in that the test port is connected to the node connected to the port to which the third cable is connected is connected, the equipment for current or voltage sensing is connected. In claim 2, The third cable is connected to the port via a connector, The connector is a sub-tap, characterized in that at least two kinds of cables having different radii can be connected. In claim 4, The connector is a sub-tap, characterized in that the cable larger than the 5C cable can be connected. In claim 1, And the module is detachable from the housing through screwing and releasing. In claim 1, The signal shielding unit is connected to a first filter element for passing the RF signal output from the signal processing unit on the first path, And a second filter element for passing a low frequency signal and a shielding element for shielding a path when a current of a predetermined size or more flows from the subscriber end on a second path parallel to the first path. In claim 1, The signal processing unit converts and outputs a signal transmitted from the headend to a subscriber end via another sub tap or the third cable through the second cable; Filter means for filtering the signal output from the converting means; And distribution means for distributing and outputting the signal output from the filter means to be transmitted to the plurality of subscriber ends, and for synthesizing the signal applied from the plurality of subscriber ends and sending the signal to the filter means. A sub tap for distributing a signal transmitted from a headend to a plurality of subscriber ends, The sub tap may include a housing including a first cable to which an RF signal is input, a second cable to which the RF signal is output, and a port to which a plurality of third cables connected to the plurality of subscriber terminals are connected; The control module is coupled to the housing detachably coupled to the signal processing to transmit the signal input through the first cable to the other sub-tab via the second cable, or to the subscriber end via the third cable A sub-tab, characterized in that comprising a. In claim 9, The module is configured to include a signal shield for shielding the abnormal power signal input through the third cable from the subscriber end, The signal shielding unit is configured in parallel with the first path via the RF signal transmitted and received between the head end and the subscriber end, and the second path via the DC power supply and the abnormal power signal input from the subscriber end in parallel. Subtab. In claim 10, The signal shield is connected to a first filter element for passing the RF signal on the first path, And a second filter element for passing a low frequency signal below a predetermined frequency and a shielding element for shielding a path when the abnormal power signal of a predetermined size or more is introduced on the second path. In claim 9, The housing has a sub-tap, characterized in that the test port is connected to the node connected to the port to which the third cable is connected is connected, the equipment for current or voltage sensing is connected. In claim 9, The third cable is connected to the port via a connector, The connector is a sub-tap, characterized in that at least two kinds of cables having different radii can be connected.

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