JP3042336B2 - Wiring system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to CS broadcasting, BS broadcasting,
TV broadcasting such as UHF broadcasting, VHF broadcasting, telephone, ISDN
And a wiring system for wiring a closed circuit system such as a door phone or the like.

[0002]

2. Description of the Related Art Generally, in a home, a plurality of coaxial cables for transmitting a TV broadcast signal to a TV receiver in each room, a telephone line for transmitting a telephone signal to a telephone in each room, and a plurality of interphone lines are provided. Wiring is performed.

In a TV co-listening system, for example, as shown in FIG. 8, reception of a CS broadcast, BS broadcast, UHF broadcast,
VHF broadcast reception and another system, and two CS
Some broadcasts are switched by the switch 5. That is, the BS broadcast, the UHF broadcast, and the VHF broadcast are respectively the BS antenna A3, the UHF antenna A4, and the VHF antenna A5.
Are mixed by a mixer 1 and sent via a coaxial cable 2 and a series unit 3 to a TV receiver 4 having a built-in BS tuner. In the CS broadcast, the broadcast signals from the two satellites received by the CS antennas A1 and A2 are switched to one of them by the switch 5 and transmitted to the TV receiver 4 via the coaxial cable 2, the serial unit 3 and the CS tuner 6. Can be

[0004] In a door phone system provided with a sub-master unit for talking between rooms, as shown in FIG.
A child device 7 is arranged at the entrance, and one parent device 8 and one or more sub-parent devices 9 are arranged in the dwelling unit.
A pair of pair wires 10 is wired, and two pairs of audio signal lines and control signal lines are wired between the parent device 8 and the sub-parent device 9. Further, when using a camera-equipped entrance device for monitoring a surveillance image at the entrance, a video signal line by a coaxial cable is wired between the child device 7 and the parent device 8 and between the parent device 8 and the sub-parent device 9. Is done.

[0005]

As described above, since various information-related wirings are individually provided in a home, the number of wirings increases, and the number of useless wirings also increases. There was a problem.

The present invention has been made in view of the above points, and an object of the present invention is to provide a wiring system that simplifies wiring of various information systems and that can be effectively used.

[0007]

According to a first aspect of the present invention, there is provided a wiring system comprising: a TV broadcast, a telephone line, a door phone handset, and the like;
A head end including a switching unit for switching and outputting various information signals as a signal source and a control unit for controlling the switching unit; and a head end having one end connected to the head end.
Switching to the information signal source is performed by the switching unit.
A cable, telephone Ya connected to the other end of the cable
It has an information outlet to which a terminal controller or the like with a monitor TV is connected .

According to a second aspect of the present invention, in the wiring system according to the first aspect, a broadcast system is transmitted to the head end by information transmission.
A channel selector for selecting and demodulating a broadcast signal as a signal source is added, and a signal of a broadcast system is input to the switching unit via the channel selector.

According to a third aspect of the present invention, there is provided the wiring system according to the first or second aspect, wherein
A signal converter having an unbalanced-balanced conversion function capable of converting between a balanced signal and an unbalanced signal is added, and a pair wire is used as the cable.

According to a fourth aspect of the present invention, in the wiring system according to the third aspect, a balanced signal is provided in the information outlet.
A balanced -unbalanced conversion unit capable of converting an unbalanced signal is added, and a coaxial connector is provided at an output unit of the information outlet .

[0011] wiring system according to claim 5 is the invention of claims 1 to 4, by adding a signal converter having a frequency multiplexing function of the signal to the head end, the
A plurality of signals are transmitted and received by the signal conversion unit .

According to a sixth aspect of the present invention, in the wiring system according to the first to fifth aspects, a coding / decoding unit is added to the head end, and a signal from a digital public line is used for the coding / decoding. The switching unit is connected to the switching unit via a decoding unit.

[0013]

In the wiring system according to the first aspect, a desired cable and an information outlet are switched by switching the information signal sources such as TV broadcast, telephone line, and door phone slave input to the head end by the switching unit. , And switching by the switching unit is performed by the control unit.

According to a second aspect of the present invention, in the wiring system according to the first aspect, a TV broadcast system signal is tuned by a tuning unit added to the head end so that a desired channel can be selected. I have to.

According to a third aspect of the present invention, in the wiring system according to the first or second aspect, a signal conversion unit having an unbalanced-to-balanced conversion function added to the head end inputs the signal to the head end. The resulting unbalanced signal is output as a balanced signal, and a pair wire can be used as a cable.

According to a fourth aspect of the present invention, there is provided the wiring system according to the third aspect, wherein the balanced-unbalanced conversion unit added to the information outlet converts the balanced signal input from the pair line into the unbalanced signal. And output from a coaxial connector provided in the output section of the information outlet.

According to a fifth aspect of the present invention, in the wiring system according to the first to fourth aspects, the signal conversion unit having a frequency multiplexing conversion function added to the head end converts the information signal and the control signal. Can be communicated bidirectionally via a cable.

In the wiring system according to the sixth aspect, in the first to fifth aspects, a digital public line is input as an information signal source by an encoding / decoding unit added to the head end. You can do it.

[0019]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a wiring system showing one embodiment of the present invention. Reference numeral 11 denotes a head end including a channel selection unit 12, a switching unit 13, a signal conversion unit 14, and a control unit 15. The head end 11 captures various information signals and sends them to an information outlet 16 described later. Tuning section 12 is T
This is for selecting and demodulating a V broadcast signal, and as shown in FIG. 2, includes a distribution circuit 12a and a channel selection demodulation circuit 12b. The input terminal 12c provided in the distribution circuit 12a includes:
IF signal of TV broadcast signal received by CS antenna A1,
IF signal of TV broadcast signal received by CS antenna A2,
IF signal of the TV broadcast signal received by the BS antenna A3 and each T signal received by the UHF and VHF antennas A4 and A5.
A mixed signal of V broadcast signals is input. The distribution circuit 12a is provided corresponding to each input terminal 12c, and distributes each IF signal to a predetermined number of channels. The channel selection demodulation circuit 12b responds to a control signal from the control unit 15 by using the T signal input from each input terminal 12c.
A channel to be selected is selected and demodulated for each V broadcast signal, and is composed of filters corresponding to the number of broadcast channels. A plurality of tuning and demodulation circuits 12b are provided for each TV broadcast system, so that a plurality of TV receivers can receive different TV broadcasts.

The switching unit 13 selects a channel and demodulates the TV.
In response to the broadcast signal and the signal from the telephone line or the line of the intercom slave unit, the control signal from the control unit 15 is applied to the signal conversion unit 1.
4 for connection and transmission to an arbitrary information outlet line, and switches are arranged in a matrix as shown in FIG. 3 so that signals can be transmitted to any information outlet 16 line. -ing The switching unit 13 is provided with input units 13b, 13c, and 13d, and the input unit 13b is connected to an output unit 12d provided in the channel selection unit 12, and the input units 13c and 13d are provided with doorphones installed at telephone lines and entrances. An interphone line or the like from the slave unit is connected.

The signal conversion unit 14 converts a signal from the output unit 13e of the switching unit 13 into a transmission form suitable for a cable 17 such as a coaxial cable or a twisted pair line connecting the head end 11 and the information outlet 16. It is. Further, from the head end 11 to the information outlet 16
A frequency multiplexing function is also included so that signals to the head end 11 and signals from the information outlet 16 to the head end 11 can be transmitted bidirectionally.

The information outlet 16 is an information outlet which is appropriately arranged at a necessary place, and is connected to the head end 11 via a cable 17 such as a coaxial cable or a twisted pair wire.
Is connected to each output unit 13e of the signal conversion unit 14. The information outlet 16 is provided with an outlet 16a such as a modular jack, to which a telephone 18 and a terminal controller 19 with a monitor TV are connected.

According to the present embodiment, if the switching unit 13 is controlled by a control signal from the control unit 15, the telephone unit 18, the terminal controller 19, and various other information terminals connected to one information outlet 16 And headend 11
A desired information signal source such as a TV broadcast signal or a telephone line connected to the information signal source can be connected, so that it is not necessary to separately wire the cable 17 for each information signal source. Also,
If a TV receiver is connected to the information outlet 16, a desired TV broadcast such as a CS broadcast, a BS broadcast, a UHF broadcast, a VHF broadcast, or the like can be received by the operation of the tuning unit 12.

If the signal conversion unit 14 is provided with a balanced-unbalanced conversion function so that a balanced signal and an unbalanced signal can be converted, even if an unbalanced signal is input to the signal conversion unit 14, , Can be output as a balanced signal, so that a pair wire can be used as the cable 17. Furthermore, using a multi-pair wire as the cable 17,
The control signal can be communicated between the information outlet 16 and the head end 11 by using an idle pair other than the information signal line among the multiple pairs. When the pair wire 17a is used as the cable 17, the outlet 16a of the information outlet 16 is usually a modular jack.
If the balanced-unbalanced conversion balun 16b is built in the information outlet 16 as shown in FIG. 4B, the coaxial connector 16c can be used as the outlet 16a as shown in FIG. 4A.

As shown in FIG. 5, if the information outlet 16 is provided with an optical receiver 16 d for receiving an optical signal, a control signal can be sent to the head end 11 by operating the optical remote controller 20. As shown in FIG.
Is provided with a changeover switch 16e.
It is also possible to send a control signal to the head end 11 by switching 6e and control the switching unit 13 or the like.

Further, as shown in FIG.
1, a signal from a digital public line is connected to the switching unit 13 via the code / decoding unit 21 so that communication with a public line such as ISDN or B-ISDN is also possible. It becomes possible.

[0028]

As described above, according to the wiring system of the first aspect, by switching the information signal sources, such as TV broadcast, telephone line, and door phone slave unit, input to the head end by the switching unit, it is possible to obtain the desired information. The cable is connected to the information cable and the information outlet, and switching by the switching unit is performed by the control unit. Therefore, a wiring system that can simplify wiring of various information systems and can be effectively used can be provided.

According to the wiring system of the second aspect,
According to the first aspect of the present invention, since a tuning unit is added to the head end, a TV broadcasting signal can be tuned by the tuning unit and a desired channel can be selected.

In the wiring system according to the third aspect, in the first or second aspect, a signal conversion unit having an unbalanced-balanced conversion function is added to the head end. The input unbalanced signal is output as a balanced signal, and a pair wire can be used as a cable.

According to a fourth aspect of the present invention, in the wiring system of the third aspect, since a balanced-unbalanced conversion unit is added in the information outlet, the balanced signal input from the pair line is unbalanced. It can be converted into a signal and output from the coaxial connector provided at the output of the information outlet.

In the wiring system according to the fifth aspect, since the signal conversion unit having the frequency multiplexing conversion function is added to the head end in the first to fourth aspects, the information signal and the control signal are controlled. Can be communicated bidirectionally via a cable.

In the wiring system according to the sixth aspect of the present invention, since a coding / decoding section is added to the head end in the first to fifth aspects, a digital public line is input as an information signal source. You can do it.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a wiring system showing one embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a tuning unit according to the above.

FIG. 3 is a schematic configuration diagram showing a switching unit according to the wiring system of FIG. 1;

FIG. 4 is a schematic diagram showing one embodiment of an information outlet according to the wiring system of FIG. 1;

FIG. 5 is a schematic diagram showing another embodiment of the information outlet according to the wiring system of FIG. 1;

FIG. 6 is a schematic diagram showing another embodiment of the information outlet according to the wiring system of FIG. 1;

FIG. 7 is a schematic configuration diagram of a wiring system showing another embodiment of the present invention.

FIG. 8 is a schematic configuration diagram showing a TV co-listening system according to a conventional example.

FIG. 9 is a schematic configuration diagram showing a door phone system according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Head end 12 Tuning part 13 Switching part 14 Signal conversion part 15 Control part 16 Information outlet 17 Transmission medium 18 Telephone 19 Terminal controller 20 Optical remote control 21 Encoding / decoding part

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masatoshi Matsumoto 1048 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (56) References JP-A-3-214995 (JP, A) JP-A-6-141099 ( JP, A) JP-A-63-252086 (JP, A) JP-A-63-125485 (JP, U) JP-A-62-129863 (JP, U) JP-A-4-69991 (JP, U) (58) ) Surveyed fields (Int. Cl. ⁷ , DB name) H04Q 3/58 107 H04M 11/00 301 H04Q 9/00

Claims (6)

(57) [Claims] 1. TV broadcast, telephone line, door phone slave unit, etc.
A head end including a switching unit for switching and outputting various information signals as an information signal source, and a control unit for controlling the switching unit; one end connected to the head end;
Switching to the information signal source is performed by the switching unit.
And cables to be continued, which is connected to the other end of the cable telephone
A wiring system comprising an information outlet to which a device, a terminal controller with a monitor TV, and the like are connected . 2. A broadcast system is provided at the head end as an information signal source.
2. The wiring system according to claim 1, wherein a channel selector for selecting and demodulating a broadcast signal is added, and a signal of a broadcast system is input to the switching unit via the channel selector. . 3. A balanced signal and an unbalanced signal at the head end.
3. The wiring system according to claim 1, further comprising a signal conversion unit having an unbalanced-balanced conversion function capable of converting a signal into a signal, and using a pair wire as the cable. 4. A balanced signal and complaint in said information outlet.
4. The wiring system according to claim 3, further comprising: a balanced-unbalanced converter capable of converting a balanced signal , and a coaxial connector provided at an output of the information outlet . 5. A signal conversion unit having a frequency multiplexing function for signals is added to the head end, and the signal conversion unit
5. The wiring system according to claim 1, wherein a plurality of signals are transmitted and received . 6. An encoding / decoding unit is added to the head end, and a signal from a digital public line is connected to the switching unit via the encoding / decoding unit. The wiring system according to claim 1.