JP2003203732A - Unit for community reception - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a unit for community reception furnished with three terminals and manufacturable easily at low cost. <P>SOLUTION: The unit for community reception of signals has a body 2 having such dimensions as corresponding to a rectangular three-piece module of a standardized wiring apparatus, and the body 2 is furnished with mounting parts 4, 4 to be attached to an embedding box and capable of being engaged with a standardized mounting frame. On the front face of the body 2, three terminals are provided rigidly in the longitudinal arrangement. The terminals consist of two coaxial connectors 10a and 10b and a modular plug 12. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint reception unit provided on a wall surface of, for example, a house or a building, and more particularly to a coaxial connector for a joint reception signal transmitted from a head end of a joint hearing system. In addition, the present invention relates to one having a modular jack to which a twisted wire used in a telephone or the like is connected.

[0002]

2. Description of the Related Art In recent years, in addition to television broadcasting, the Internet has been frequently used as an information source in homes and the like. There are various types of connections to the Internet, such as the use of telephone lines and CATV. Modular jacks are commonly used to connect to these telephone lines,
A coaxial connector is used for connection to television broadcasting and CATV. Further, some BS digital tuners and CS digital tuners have a coaxial jack for inputting a digital broadcast signal and a modular jack for receiving a service using a telephone line. It is convenient to combine such modular jacks and coaxial connectors in one place.

Therefore, for example, Japanese Patent Laid-Open No. 2001-3197
No. 37, a unit having a modular jack, a unit having a coaxial connector, and a unit having a power outlet are individually formed, and a maximum of three selected ones of these units are formed in a rectangular frame body. Attached to
It is disclosed that the frame-shaped body is attached to a panel.

[0004]

However, in this case, although a maximum of three units can be provided, the selected units must be attached to the frame-shaped body one by one,
It was troublesome to handle, the workability of assembly was poor, and the cost was high. There are also modular jacks and coaxial connectors that are integrally formed so that the unit installation work is unnecessary, but the number of plugs and connectors that can be used is as small as two.

An object of the present invention is to provide a joint reception unit which is provided with many coaxial connectors and modular jacks, is easy to manufacture and handle, and is low in cost.

[0006]

The joint reception unit according to the present invention has a main body. The main body has a size corresponding to a standardized square three-port module of a wiring device. A mounting portion is provided on the main body. The mounting portion is engageable with a standardized mounting frame mounted on the embedded box. Three terminals are provided on the front surface of the main body along the longitudinal direction. The three terminals are composed of a coaxial connector and a modular jack. The three terminals may be composed of two coaxial connectors and one modular jack, or may be composed of two modular jacks and one coaxial connector.

According to this unit for joint reception, since two coaxial connectors and one modular jack, or two modular jacks and one coaxial connector are integrally formed in the main body, they are mounted on the mounting frame. Can be easily performed, manufacturing and handling are easy, and manufacturing cost can be reduced. In particular, when two coaxial connectors are used, one coaxial connector receives a first high frequency signal, for example satellite broadcast, and the other coaxial connector receives a second high frequency signal, for example satellite communication, or one coaxial connector. It is also possible to connect to the Internet using the modular jack after receiving the first high frequency signal, for example, terrestrial broadcasting, and the second coaxial signal on the other coaxial connector, for example, satellite broadcasting / communication. it can. With two modular jacks, one modular jack can be used for analog lines and the other modular jack for digital lines.

When two coaxial connectors and one modular jack are used, upstream signals and downstream signals in different frequency bands may be input / output to / from each coaxial connector. In this case, at least one of the coaxial connectors is connected with means for making the upstream signal selected between the passing state and the blocking state. It can also be provided on both coaxial connectors. This means is provided in the body. As this means, for example, two branch sides of a bidirectional two-branch device are connected to each coaxial connector, and an upstream signal is passed between at least one of the coaxial connectors and the corresponding branch side of the two-branch device. It is possible to use a switch that can be switched to a state in which a blocking means for blocking is connected, and a state in which at least one of the coaxial connectors and the corresponding branch side of the two-way switch are directly connected. With this configuration, for example, in the case of using this joint reception unit in a two-way joint reception system, when the upstream signal is not transmitted, the upstream signal is blocked to prevent an increase in ingress noise. can do.

Further, when two coaxial connectors and one modular jack are used, these two coaxial connectors can output first and second high frequency signals of different frequency bands transmitted through the common reception facility. Further, the demultiplexing means can be provided in the main body. Two output sides of this branching means are connected to each coaxial connector. As the demultiplexing means, for example, first extracting means for extracting the first high frequency signal and second extracting means for extracting the second high frequency signal are provided, and the input side of the first and second extracting means is provided. It is also possible to use those connected to each other. Alternatively, extraction means for passing the first high-frequency signal is provided on one of the two branch sides of the two-way branch device, and this is connected to one coaxial connector,
It is also possible to provide extraction means for passing the second high-frequency signal on the other branch side of the two-branch device. With such a configuration, as described above, for example, one coaxial connector is used to receive a first high-frequency signal, for example, satellite broadcasting, and the other coaxial connector is used to receive a second high-frequency signal, for example satellite communication. be able to. Alternatively, one of the coaxial connectors may be used to provide a first high frequency signal, eg UHF
The terrestrial signal in the band can be received by using the other coaxial connector to receive the second high frequency signal, for example, the terrestrial signal in the VHF band.

When using two modular jacks and one coaxial connector, the two modular jacks can be for digital lines and analog lines. This enables connection to either digital or analog lines as described above. Also, both of them can be used for analog lines, one of which can be connected to a telephone line for BS or CS digital tuner, and the other of which can be used as a general telephone line or for ADSL. In addition to this, one coaxial connector inputs and outputs upstream signals and downstream signals in different frequency bands, and the coaxial connector is connected with means for switching the upstream signal between a passing state and a blocking state, This means can be provided in the body. Thereby, the ingress noise can be suppressed.

When using two modular jacks and one coaxial connector, or when using one modular jack and two coaxial connectors, it is possible to provide a hub in the main body and connect the hub to the modular jacks. it can. Thereby, for example, a LAN can be easily constructed. A power supply may be provided within the body to operate the hub. This power supply section extracts the power supply superimposed on the transmission line for transmitting the high-frequency signal supplied to the coaxial connector and supplies it to the hub.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A joint reception unit according to a first embodiment of the present invention is shown in FIGS. The unit for joint reception includes a main body 2 as shown in FIG. The main body 2 is formed in a substantially T shape. That is, the main body 2 has a horizontal portion 2a and a vertical portion 2b extending vertically downward from the center of the horizontal portion 2a. Mounting portions 4 and 4 are integrally provided on the main body 2 at both upper and lower ends of the main body 2. The attachment portions 4 and 4 are for attaching the main body 2 to a standardized rectangular attachment frame (not shown). Mounting portions 6, 6, 6, 6 are integrally provided on the main body 2 on both the left and right sides of the front surface of the main body 2 with vertical intervals. These attachment parts 6, 6, 6, 6 are also used for attaching the main body 2 to the attachment frame.

The vertical dimension of the main body 2 is equivalent to a standardized three-port square unit. The width dimension of the vertical portion 2b also corresponds to the width dimension of the standardized rectangular unit.

Two coaxial connectors 8a and 8b are provided on the lower surface of the horizontal portion 2a of the main body 2 so as to be positioned on both sides of the vertical leg portion 2b with a space therebetween.

At the center of the front surface of the main body 2, three terminals, for example, two coaxial connectors 10a and 10b, and one modular jack 12 are arranged in a line along the vertical direction of the main body 2 at a constant interval. It is provided in. The modular jack 12 is located at the top of this row.

The unit for joint reception is formed symmetrically with the axis passing through the center of the front surface in the left-right direction as the axis of symmetry. The coaxial connectors 10a and 10b and the modular jack 12 are integrally provided on the main body 2, and are a combination of a unit case for the coaxial connector and a unit case for the modular jack, which are separately configured, or each unit case. May be integrally configured in one case.

A rectangular cover 13 is detachably attached to the front surface of the main body 2 while exposing only the coaxial connectors 10a and 10b and the modular jack 12.

FIG. 2 shows a circuit of the unit for joint reception. In the main body 2, a branching or distributing means, for example, a bifurcating device 14 is provided. The input side of the two-branching device 14 is connected to the coaxial connector 8a. The output side is connected to the coaxial connector 8b. Further, one of the two branching sides of the two-branching device 14 is connected to the coaxial connector 10a.
It is connected to the. The other branch side of the two-branch device 14 is connected to the coaxial connector 10b.

The coaxial connector 8a is connected to a trunk line connected to the head end of the joint reception system, a branch line from the trunk line, or a joint reception unit existing on the branch line. The coaxial connector 8b is on the same branch line as this joint reception unit and is connected to another joint reception unit downstream of this joint reception unit via a coaxial cable. Coaxial connector 10
a and 10b are connected to a television receiver existing in the vicinity of the unit for joint reception via a coaxial cable. From the headend side, as a joint reception signal, for example, a terrestrial television broadcasting signal in the UHF band and the VHF band,
Downlink signals, which are high-frequency signals such as a CATV independent broadcast signal, a BS-IF signal (satellite broadcast intermediate frequency signal), and a CS-IF signal (satellite communication intermediate frequency signal), are transmitted.

Modular jack 12 on the front of the body 2
Although not shown in FIG. 1, is connected to another modular jack 16 provided on the back side of the main body 2 or the like (a terminal block (not shown)). This modular jack 1
2 and 16 are shown as two pins in FIG. 2 for the sake of simplification of the drawing, but actually, in the case of an analog telephone line, 6
Pins, or in the case of digital telephone lines, 8-pins are used. The modular jack 16 is connected to an analog or digital telephone line installed in a house where the unit for joint reception is used.
The modular jack 12 is used for a telephone, a fax machine, a BS / CS digital tuner, a personal computer modem, or the like existing in the vicinity of the shared reception unit.
Connected.

In the unit for joint reception having the above-mentioned structure, one terminal 2 is integrally provided with three terminals composed of the coaxial connectors 10a and 10b and the modular jack 12, so that the manufacturing and handling thereof are easy. The cost can also be reduced.

When the joint reception system in which the unit for joint reception is used is a two-way joint reception system, the portion of the circuit accommodated in the main body 2 related to the joint reception is, for example, Figure 3 (a) or (b)
Those shown in can also be used. In the two-way joint reception system, the downlink signal as described above is transmitted from the headend to each terminal side, and the uplink signal which is a high frequency signal having a frequency lower than the downlink signal is transmitted from each terminal side to the headend. To do. Therefore, the two-branch device 14
Is used for bidirectional.

Then, in FIG. 3A, the coaxial connector 1
0a and one branch side of the branching device 14 are provided with changeover switches 18a and 20a and an upstream signal blocking means, for example, a high-pass filter 22a. The high-pass filter 22a has a pass frequency selected to a frequency capable of blocking a signal having a frequency lower than the upper limit frequency of the upstream signal. By switching the change-over switches 18a and 20a, one branch side of the two-branching device 14 and the coaxial connector 10b are directly connected to each other, and a high-pass filter 22a is inserted between them.

For example, in the bidirectional receiving system, the coaxial connectors 10a and 10b may be both connected to the television receiver, the coaxial connector 10a may be connected to the terminal device, and the coaxial connector 10b may be the television receiver. It may be connected. When the coaxial connector 10a is connected to the terminal device, the changeover switches 18a and 20a are switched so that one branch side of the two-branching device 14 and the coaxial connector 10a are directly connected. When the coaxial connector 10a is connected to the television receiver,
By inserting the high-pass filter 22a between the one branch side of the branching device 14 and the coaxial connector 10a, unnecessary noise in the upstream signal band can be prevented from being transmitted to the upstream side. The combined noise can be reduced.

3B, the changeover switches 18a and 20a and the high-pass filter 22 shown in FIG. 3A are also provided between the coaxial connector 10b and the other branch side of the two-branch device 14.
Changeover switches 18b and 20b and a high-pass filter 22b having the same configuration as a are provided. With this configuration, it is possible to prevent unnecessary noise from being transmitted to the head end side, regardless of which of the coaxial connectors 10a and 10b the television receiver is connected to and which terminal device is connected to which one.

The circuit in the main body 2 in the first embodiment can be modified as follows. For example, the downlink signal transmitted from the head end is the first high frequency signal,
For example, it is composed of a CATV signal using the UHF band or the like and a second high frequency signal, for example, a BS-IF signal of the 1 GHz band, and outputs the CATV signal to the coaxial connector 10a to output the BS signal.
In the case of outputting the IF signal to the coaxial connector 10b side, as shown in FIG. 4 (a), only the extracting means, for example, the CATV signal is provided between one branch side of the two-branching device 14 and the coaxial connector 10a. Is provided with a low-pass filter 24 that allows the coaxial connector 10 to connect to the other branch side of the two-branch device 14.
An extraction means, for example, a high-pass filter 26 that allows only the BS-IF signal to pass therethrough is provided between the filter and b. The CATV signal and the BS-IF signal are output to the coaxial connector 8b in order to transmit the CATV signal and the BS-IF signal to the downstream shared reception unit. In this case, the modular jack 12 can be used, for example, for returning by a telephone line of BS digital broadcasting. The downlink signal is UHF
Only the terrestrial signal of the band and VHF band, coaxial connector 1
The VHF band terrestrial signal to the 0a side, the coaxial connector 10b
It is also possible to output the UHF band terrestrial signal to each side,
This is possible by appropriately selecting the cutoff frequencies of the high pass filter 26 and the low pass filter 24. In this case, the modular jack 12 is connected to a telephone, a fax machine or a modem of a personal computer.

Further, the down signal transmitted from the head end side comprises the first and second high frequency signals, for example, BS-IF signal and CS-IF signal, and outputs the CS-IF signal to the coaxial connector 10a, In the case of outputting the BS-IF signal to the coaxial connector 10b side, as shown in FIG.
The extraction means, for example, a high-pass filter 28 that allows only the CS-IF signal to pass therethrough, is provided between the other branch side of the two-branching device 14 and the coaxial connector 10b. It is sufficient to provide the low-pass filter 30 that passes only the light. The coaxial connector 8b has a B
The S-IF signal and the CS-IF signal are output. Also in this case, the modular jack 12 is used for returning by a telephone line of BS digital broadcasting, for example.

In both cases of FIGS. 4A and 4B, the high-pass filters 26 and 28, the low-pass filters 24 and 3,
0 functions as a demultiplexing means.

When the unit for joint reception is used at the end of the joint reception system and does not need to be transmitted to the downstream side, as shown in FIG. Instead of 14, a branching filter 32 can be used. In the duplexer 32, the first and second high frequency signals input to the coaxial connector 8a are the CATV signal and the BS-.
In the case of the IF signal, the input side is composed of two extracting means, for example, a filter, which are connected to each other so that they can be separated. When the first and second high frequency signals input to the coaxial connector 8a are terrestrial television broadcast signals in the UHF band and the VHF band, two filters in the demultiplexer 32 are provided so that they can be demultiplexed. It is configured. When the first and second high frequency signals input to the coaxial connector 8a are the BS-IF signal and the CS-IF signal, two filters in the demultiplexer 32 are configured to demultiplex these signals. There is. When using the duplexer 32, the coaxial connector 8b is removed. Furthermore, two transmission lines from the headend (for example, one is CATV
When signals of two systems are transmitted to the unit for joint reception via a signal and a BS-IF signal, and the other is a CS-IF signal), the signals of each system are transmitted from each coaxial connector.

The second embodiment is shown in FIG. In this embodiment, the modular jack 12 is configured similarly to the first embodiment and its modification, except that the modular jack 12 is provided at the lowermost portion of the front surface of the main body 2. The same parts are designated by the same reference numerals and the description thereof will be omitted.

A third embodiment is shown in FIGS. 6 and 7.
The unit for joint reception of this embodiment is shown in FIG.
As shown in (b), the appearance is configured similarly to the first and second embodiments, except that one coaxial connector 10 and two modular jacks 12a and 12b are provided.

FIG. 7A shows a circuit diagram of the unit for joint reception. In this unit for joint reception, one branching device 14a is provided. The input side of the 1-branching device 14a is connected to the coaxial connector 8a. The output side of the 1-branching device 14a is connected to the coaxial connector 8b. 1 turnout 1
The branch side of 4a is connected to the coaxial connector 10. The coaxial connector 8a is connected to the upstream side of the joint reception system to which this unit for joint reception belongs, for example, a trunk line connected to the head end, a branch line branched from this trunk line, or a unit for joint reception in this branch line. ing. The coaxial connector 8b is connected to the shared reception unit downstream of the shared reception unit in the shared reception system to which the shared reception unit belongs. The coaxial connector 10 is connected to a television receiver near the place where the unit for joint reception is provided.

Two modular jacks 12a, 12b
Although not shown in FIG. 6, is connected to modular jacks 16a and 16b (or a terminal block (not shown)) provided on the back surface side of the main body 2. In FIG. 6, the modular jacks 12a, 12b, 16a, 16b are shown as having 2 pins for the sake of simplification of the drawing, but in reality, the modular jacks 12a, 16a are those having 6 pins for analog lines. Yes, the modular jacks 12b and 16b are of 8 pins for digital lines. The modular jack 16a or 16b according to the type of telephone line laid at the place where this unit for joint reception is installed is connected to the telephone line. Alternatively, both of the two modular jacks 12a and 12b may be analog lines. In this case, for example, both modular jacks may be connected to the required two of BS / CS digital tuner, telephone, fax machine or modem of personal computer.

In the unit for joint reception thus constructed, three terminals, namely, the coaxial connector 10 and the modular jacks 12a, 12b are integrally formed in one unit for joint reception, so that the unit can be manufactured and handled. It's easy.

Incidentally, instead of the television receiver, a terminal device for transmitting an upstream signal may be connected to the head end side of the coaxial connector 10. In this case, the 1-branching device 14a is of a bidirectional type. As shown in FIG. 2B, the changeover switches 18 and 20 and the high-pass filter 22 are provided between the branch side of the one-branching device 14 a and the coaxial connector 10. When the upstream signal is transmitted from the coaxial connector 10 to the headend side, the upstream signal is split by one branching device 14
The changeover switches 18 and 20 are changed over so as to transmit to the a side. Further, when the coaxial connector 10 is connected to the television receiver, the high pass filter 22 is a single branch device 14
The changeover switches 18 and 20 are switched so as to be connected between the branch side of a and the coaxial connector 10 so that the noise in the frequency band of the upstream signal from the coaxial connector 10 is reduced by one brancher 14.
The ingress noise is reduced by blocking the transmission to the a side.

A fourth embodiment is shown in FIGS. 8 and 9. The external appearance of the unit for joint reception of this embodiment is the same as that of the third embodiment. However, as shown in FIG.
A hub 40 for LAN is provided inside. The modular jacks 12 a and 12 b provided on the front surface side of the main body 2 are connected to the hub 40. The modular jacks 12a and 12b are for 10/100 BASE-T. These modular jacks 12a and 12b are
For example, it is connected to a terminal device such as a personal computer. The communication terminal 42 provided on the rear surface side of the main body 2 is also 10 /
It is connected to the hub 40 for 100BASE-T. The communication terminal 42 is connected to, for example, a personal computer that functions as a server.

A hub power supply unit 44 for operating the hub 40 is also provided in the main body 2. This hub power supply 4
As shown in FIG. 9A, for example, a common reception transmission line, for example, a trunk line or a branch line is connected to the coaxial connector 8a.
The direct-current or alternating-current voltage supplied to the center conductor of is supplied via the high-frequency blocking coil 48 and the core wire of a coaxial cable (not shown). Alternatively, as shown in FIG. 3B, a DC or AC voltage supplied from a common reception line, for example, a trunk line or a branch line via the coaxial connector 10b causes the high frequency blocking coil 48 and the core wire of a coaxial cable (not shown) to be supplied. It is supplied to the hub power supply unit 44 via the. FIG. 9 (a),
(B) In either case, the power supply blocking capacitor 4 is provided between the coaxial connector 10 and the branching side of the one-branching device 14a.
6 is provided.

When it is necessary to cascade the hubs 40, as shown in FIG.
The terminals 50 for cascode connection may be provided on the rear surface side of the main body 2 so that 0 can be cascade-connected.

In each of the above-mentioned embodiments, the main body 2 has a T-shape, but the shape is not limited to this, and it may have a rectangular parallelepiped shape, for example. Further, in the above embodiment, 1
Although the branching device, the bifurcating device, and the like are used, a distributing device such as a bifurcating device can also be used. Modular jack 12
Is provided at the uppermost portion of the main body 2 in the first embodiment and at the lowermost portion of the main body 2 in the second embodiment, but the modular jack 12 may be provided at the center. Similarly, in the third embodiment and the fourth embodiment, the modular jacks 12a and 12b are provided at the center and the bottom of the front surface of the body 2, but they are provided at the top and the bottom of the front surface of the body 2. You can also

[0040]

As described above, according to the present invention, since it is only necessary to provide the main body with the three terminals integrally and to attach the main body to the mounting frame, it is possible to manufacture the individual unit as compared with the case where the individual units are assembled. In addition, it is easy to handle and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view and a perspective view of a joint reception unit according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram of the unit for joint reception of FIG.

FIG. 3 is a circuit diagram of a modified example of the circuit of FIG.

FIG. 4 is a circuit diagram showing a part of another modification of the circuit of FIG.

FIG. 5 is a front view and a perspective view of a shared reception unit according to a second embodiment of the present invention.

6A and 6B are a front view and a perspective view of a joint reception unit according to a third embodiment of the present invention.

7 is a circuit diagram of the unit for joint reception of FIG. 6 and a circuit diagram showing a part of a modified example thereof.

FIG. 8 is a circuit diagram showing a part of a unit for collective reception according to a fourth embodiment of the present invention.

9 is a circuit diagram showing the remaining portion of the circuit of FIG.

[Explanation of symbols]

2 body 2a Horizontal part 2b vertical part 4 6 mounting part 10 10a 10b Coaxial connector (terminal) 12 12a 12b modular jack (terminal)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H03H 7/46 H03H 7/46 Z (72) Inventor Nobuyuki Ama 2-15 Hamasaki-dori, Hyogo-ku, Kobe-shi, Hyogo No. D-Equx Antenna Co., Ltd. F term (reference) 5E087 EE08 EE12 HH01 JJ01 JJ08 MM09 PP08 QQ01 QQ02 RR25

Claims (9)

[Claims] 1. A main body having a size corresponding to a standardized square three-port module of a wiring device, and a standardized mounting frame which is provided in the main body and which is attached to an embedded box. A mounting portion and three terminals provided on the front surface of the main body along the longitudinal direction, the three terminals being a coaxial connector,
Joint reception unit consisting of modular jack. 2. The unit for joint reception according to claim 1, wherein the three terminals include two coaxial connectors and one modular jack. 3. The unit for joint reception according to claim 2, wherein an upstream signal and a downstream signal of different frequency bands are input and output to and from the two coaxial connectors, and the at least one coaxial connector is provided with the A joint reception unit provided with a selection means for selecting an upstream signal as one of a passing state and a blocking state. 4. The unit for joint reception according to claim 2, wherein the two coaxial connectors have different frequency bands.
A joint reception unit connected to the two output sides of the demultiplexing means for demultiplexing one high frequency signal into each of the two output sides. 5. The unit for joint reception according to claim 4, wherein the demultiplexing means is a two-branch unit and two of the two-branch unit.
A unit for joint reception, comprising: extraction means provided on each of two branch sides for extracting high-frequency signals of different frequency bands. 6. The unit for joint reception according to claim 1, wherein the three terminals are two modular jacks,
Unit for joint reception consisting of one coaxial connector. 7. The unit for joint reception according to claim 6, wherein one of the two modular jacks is connected to an analog line, the other modular jack is connected to a digital line, or both modular jacks are analog lines. Unit for joint reception connected to. 8. The unit for joint reception according to claim 2 or 6, wherein the modular jack is connected to a hub provided in the main body. 9. The unit for joint reception according to claim 8, wherein the power supply section for extracting the operating power superimposed on the transmission line of the high frequency signal supplied to the coaxial connector and supplying the extracted power to the hub is the main body. The unit for joint reception provided inside.