JP2607465Y2 - Multi-unit call system - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system for a collective housing, and more particularly to a communication system for a collective housing with a monitor capable of monitoring a visitor at a collective entrance and communicating with a telephone of each dwelling unit.

[0002]

2. Description of the Related Art Conventionally, it has been possible to make a call between a telephone of each dwelling unit of an apartment house connected to an outside line and a collective entrance machine of a collective entrance, and furthermore, by operating a telephone of each dwelling unit, an electric telephone installed at the collective entrance is operated. 2. Description of the Related Art A call system for an apartment house that can unlock a lock or the like is known. As shown in FIG. 6, the call system for a collective housing connects a telephone line 2 and a dwelling telephone 3 installed in each dwelling unit via an exchange 4, and a dwelling unit 3 connected to the exchange 4 transmits the dwelling telephone 3 If there is a call to
The telephone line 2 connected to the dwelling unit telephone 3 and the collective entrance device 5 are switched and connected to enable communication.

Furthermore, an electric lock 6 of the collective entrance is connected to the exchange 4 via a collective entrance unit 5 and a specific button of the dwelling unit telephone 3 is operated during a telephone call so that the lock can be unlocked.

[0004] When a call is made from a collective entrance machine during a call with an outside line, an interrupt sound is emitted to notify the call, and another specific button on the dwelling unit telephone 3 is operated to put the call on hold, and the collective entrance machine is put on hold. 5 and was able to talk. When the call is resumed, the hold is released again by the same operation or by hooking, and the call is connected to an outside line.

[0005]

However, in such a condominium call system, it is possible to make a call with the collective entrance machine 5, and even if the electric lock of the collective entrance is unlockable, the existing lock can be used. It was not possible to monitor visitors at the entrance using the two telephone lines. For this reason, it was not possible to visually confirm the visitor, and it was inconvenient to unlock the entrance at each dwelling unit, and had to go to the entrance for confirmation. In order to reduce the labor, a monitor device with separate wiring is required to monitor visitors at the collective entrance, and the device becomes large-scale.

The present invention has been made in order to solve the above-mentioned drawbacks, and it is possible to install a device for monitoring visitors at a collective entrance using an existing two-line telephone line. It is an object of the present invention to provide a communication system for an apartment house that can ensure safety by a simple device and simple wiring work.

[0007]

In order to achieve this object, the multi-family call system of the present invention is connected to a telephone line and installed at each dwelling unit, and provided at a telephone line or at the entrance. A communication system for a multi-family residence, comprising: a switching unit for switching a connection of a dwelling unit telephone to a multi-family entrance machine, wherein the multi-family entrance machine is provided with a camera unit and a video signal generated by the camera unit. Is provided in each dwelling unit, and a monitor unit for FM demodulating the video FM modulation signal and monitoring the video signal is provided, and a dwelling unit adapter is provided. A data receiving circuit for receiving a data reception signal including a call signal from the entrance machine; and, when the data reception signal is received, generating a ringing tone to the dwelling unit telephone through the first normally open contact. A ringing tone generating circuit, a relay for switching connection to a telephone line when a data reception signal is received from a collective entrance machine, an off-hook detecting circuit for detecting on-hook / off-hook of a dwelling unit telephone, and a relay and off-hook detecting circuit. And an amplifier for amplifying and outputting the audio signal to the dwelling unit telephone through the second normally open contact, and a drive for driving the camera unit and the image FM modulation circuit by the off-hook detection signal from the off-hook detection circuit A data transmission circuit for transmitting a signal, and a ringing tone drive signal sent to a ringing tone generation circuit when a data reception signal is received, to close the first normally open contact, and to be closed by an off-hook detection signal from the off-hook detection circuit. The first normally open contact thus formed is opened to stop the ringing tone generating circuit, the second normally open contact is closed, and the collective entrance transmission / reception And by connecting the dwelling phone and call established status, an off-hook detection signal data transmission circuit video image signal of the visitors to enter and drive the camera unit set entrance to output aggregated entrance machine through the relay F
CP that is FM-modulated by the M-modulation circuit and sent to the monitor connected to the dwelling unit adapter, and outputs the off-hook detection signal from the off-hook detection circuit to the exchange from the data transmission circuit
U, and the exchange has a line relay for connecting the dwelling unit telephone to the telephone line together with the relay of the dwelling unit adapter in the standby state, and a data transmission / reception circuit for outputting a data reception signal including a calling signal from the collective entrance device. When a data reception signal is input to the data transmission / reception circuit, the line relay is switched from the telephone line, and when an on-hook signal is received, the line relay is switched to connect the dwelling telephone to the telephone line and wait for a call signal from the telephone line. And an exchange CPU for setting the state.

[0008]

In this multi-unit residential call system, when a dwelling telephone connected to a telephone line via an exchange receives a call from a collective entrance machine installed at the collective entrance, the exchange establishes a connection from the telephone line side. The switching is made to the entrance machine side, and further, the relay of the dwelling unit adapter of the dwelling unit telephone is switched from the telephone line side to the collective entrance device side, so that the collective entrance device and the residential telephone are connected. A reception signal is output to the CPU from the data reception circuit connected to the relay of the dwelling unit adapter, and the CP
When U receives the received signal, a drive signal for the ringing tone generating circuit is output from the CPU, and the ringing tone generating circuit causes the dwelling telephone to generate a ringing tone. When the handset of the dwelling unit telephone is picked up and goes off-hook, the off-hook detection circuit detects
A detection signal is sent to U to stop the generation of a ringing tone, and a drive signal for driving the camera unit and the video FM modulation circuit of the collective entrance machine is sent from the data transmission circuit. Then, the video signal generated by the camera unit is FM-modulated and sent to a monitor unit connected to the dwelling unit adapter, and the video signal demodulated by FM is monitored. For this reason, by providing the camera unit and the image FM modulation circuit in the collective entrance machine and providing the dwelling unit adapter and the monitor unit in the dwelling unit telephone, the collective entrance can be monitored using the existing equipment and wiring. Thereby, even when the electric lock at the collective entrance is unlocked in the living room, security in crime prevention can be ensured.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention;

As shown in FIG. 1, an existing system in which a telephone line 2 and a dwelling unit telephone 3 provided in each dwelling unit are connected by a two-wire connection via an exchange 4 is applied to the multi-dwelling unit communication system S. An exchange 4 is connected to a collective entrance machine 7 installed at the collective entrance by four-wire wiring, and is connected to the collective entrance machine 7 by two wires and connected to the exchange 4 through the collective entrance machine 7 at an electric lock of the collective entrance. 6 are provided.

As shown in FIG. 2, the collective entrance 7 of the collective housing communication system S is provided with a ten key 8 for calling a specific dwelling telephone 3, and is transmitted by operating the ten key 8. A CPU 11 for inputting a call signal is provided, and an unbalanced / balanced exchange circuit 1 is provided on an output side of the CPU 11.
A data transmission / reception circuit 9 for sending data to the exchange 4 through the data exchange 0 is provided. Furthermore, the microphone 1
2. Speaker 13 is connected, unbalanced / balanced exchange circuit 1
A voice transmission / reception amplifier circuit 14 is provided for transmitting / receiving a voice signal to / from the dwelling unit telephone 3 via the telephone 0 to enable communication. still,
A display circuit 8a is provided on the output side of the CPU 11, and a display circuit 8a is provided.
The number operated with the key 8 is displayed so that the operator can confirm it.

A camera unit 15 for photographing the vicinity of the collective entrance is provided in the collective entrance machine 7 under the control of the CPU 11, and an image signal generated by the camera unit 15 is FM-modulated on the output side of the camera unit 15. A video FM modulation circuit 16 is provided, and the modulated video signal is supplied to the unbalanced / balanced exchange circuit 10.
Is transmitted to the monitor unit 35 connected to the dwelling unit telephone 3 via. Further, the output side of the CPU 11 is connected to an electric lock interface 17 at the collective entrance,
The electric lock 6 can be locked and unlocked under the control of the CPU 11. Each circuit of the collective entrance machine 7 is configured to be supplied from a power supply 7a.

The exchange 4 to which the collective entrance machine 7 is connected is shown in FIG.
As shown in FIG.
A data transmission / reception circuit 18 to which a call signal sent from 0 is input is provided connected to the terminal T1. A call control signal from the data transmission / reception circuit 18 is input to the exchange CPU 19, and a relay control circuit 21 for outputting a drive signal to the line relay 20 based on a signal output from the exchange CPU 19 is provided. The line relay 20 is connected to the normally closed contact 20a connected to the telephone line 2 side via the incoming call detection circuit 22 and the terminal T2, and is connected to the terminal T1 and connected to each dwelling unit telephone 3 via the terminal T3. Normally open contact 20b
The normally closed contact 20a of the dwelling telephone 3 corresponding to the calling signal is switched to the normally open contact 20b by a drive signal sent from the exchange CPU 19 via the relay control circuit 21. A PB receiver 2 for inputting a PB signal sent from the dwelling unit telephone 3 to the CPU 19 via the terminal T3 and the normally open contact 20b of the line relay 20.
3 is provided, and the electric lock 6 can be locked and unlocked by a drive signal output from the exchange CPU 19. Each circuit of the exchange 4 is configured to be supplied from a power supply 4a.

The home telephone 3 connected to the exchange 4
Is connected to the terminal T3 of the exchange 4 by the dwelling unit adapter 24 (FIG. 4).
Through a terminal T4. As shown in FIG. 4, the dwelling unit adapter 24 has a terminal T4 connected to the terminal T3 of the exchange 4 and a terminal T5 connected to the dwelling telephone 3, and receives a call signal sent from the exchange 4 at the terminal T4. And a ring tone generating circuit 27 driven by a ring tone drive signal output from the CPU 26 when a ring signal is input to a CPU 26 provided on the output side of the data receive circuit 25. I have. The ringing tone generating circuit 27 is connected to an off-hook detecting circuit 29 for detecting off-hook / on-hook via a first normally open contact 28. Contact 28
Is closed, a ringing tone drive signal is output from the ringing tone generating circuit 27, and the ringing tone of the dwelling unit telephone 3 is sounded. When off-hook is detected, the ringing tone is stopped, and the first normally open contact 28 are opened. Further, a call signal is inputted to the terminal T4 to the CPU 26,
6 driven by the drive signal output from 6
Is connected. The relay 30 has a normally closed contact 30a connected to the terminal T5 via the off-hook detection circuit 29, and a normally open contact 30b to which the collective entrance transmitting / receiving amplifier 31 and the data transmitting circuit 32 are connected. A 2-wire / 4-wire conversion circuit 33 is provided on the output side of the collective transmission / reception amplifier 31. The 2-wire / 4-wire and 4-wire-2wire conversion is performed by the collective transmission / reception amplifier 31 and the 2-wire-4wire conversion circuit 33. As a result, the audio signal can be transmitted and received, and the off-hook detection circuit 2
When an off-hook is detected by the terminal 9, the terminal T4 is connected via the second normally open contact 34 which is closed by the CPU 26 to the called home telephone 3, so that a call can be made between the collective entrance machine 7 and the home telephone 3. It is configured to be.

Further, on the normally open contact 30b side of the relay 30, a monitor section 35 connected via a terminal T6 is provided. Each circuit of the dwelling unit adapter 24 is configured to be supplied from a power supply 24a.

As shown in FIG. 5, the monitor unit 35 has a terminal T7 connected to a terminal T6 of the dwelling unit adapter 24. An FM demodulation circuit 37 is connected to the terminal T7 via a balanced / unbalanced conversion circuit 36. The video signal that has been FM-modulated and sent from the collective entrance device 7 is demodulated, and the monitor circuit 38 displays the video signal. Each circuit of the monitor unit 35 is configured to be supplied from a power supply 35a.

In the communication system S for a condominium thus constructed, the dwelling unit telephone 3 normally receives a telephone call via the normally closed contact 20a of the line relay 20 of the exchange 4 and the normally closed contact 30a of the relay 30 of the dwelling unit adapter 24. It is connected to the line 2 and is in a standby state. When a visitor at the collective entrance operates the 10 key 8 of the collective entrance machine 7 and calls a specific dwelling unit telephone 3, the CPU 11 sends an unbalanced / balanced exchange circuit 10 from the data transmission / reception circuit 9 according to a call signal from the 10 key 8. It is sent to the exchange 4 via the switch. The data transmission / reception circuit 18 of the exchange 4 inputs a call signal, and the relay control circuit 21 is controlled by the exchange CPU 19, and the dwelling unit telephone 3 corresponding to the call signal of the line relay 20 is connected to the normally open contact 20 from the telephone line 2.
b. Further, the calling signal is output from the dwelling unit adapter 24.
Is input to the CPU 26 via the data receiving circuit 25, the CPU 26 closes the first normally open contact 28, sends a ringing tone drive signal to the ringing tone generating circuit 27, and drives the ringing tone from the ringing tone generating circuit 27. In response to the signal, the dwelling telephone 3 sounds a ringing tone and closes the normally open contact 30b of the relay 30. When the off-hook detection circuit 29 detects the off-hook of the dwelling unit telephone 3, the CPU 26 opens the closed first normally open contact 28 to stop the ringing tone generation circuit 27, and the second
The normally open contact 34 is closed, and the collective transmission / reception amplifier 31 is closed.
And the dwelling unit telephone 3 are connected to be in a callable state. The collective entrance transmission / reception amplifier 31 receives a voice signal multiplexed with a video signal or the like and transmits the voice signal via a circuit (not shown), thereby enabling a call. Further, the off-hook detection signal is CP
U26 is output to the data transmission circuit 32, from the data transmission circuit 32 through the relay 30, the CPU of the
11, the camera unit 15 is driven, and the camera unit 15 is driven.
The video signal of the visitor of the collective entrance created in the above is FM-modulated by the video FM modulation circuit 16 and the unbalanced / balanced exchange circuit 10
Is sent to the monitor 35 connected to the dwelling unit adapter 24. The monitor unit 35 receives only the video signal via a circuit (not shown) and transmits the video signal multiplexed with the call signal and the like via a circuit (not shown).
The signal is FM-demodulated by the M demodulation circuit 37 and displayed on the monitor 38.
For this reason, the caller of the dwelling unit telephone 3 can talk while watching the image of the visitor. Further, when the visitor is confirmed and the dwelling telephone 3 is operated, for example, when the dial 6 is dialed, a PB signal for unlocking the electric lock is input to the exchange CPU 19 via the PB receiver 23 of the exchange 4 and the CPU 19
Then, the electric lock 6 is unlocked by the CPU 11 of the collective entrance machine 7 via the electric lock interface 17, and the visitor can enter.

Thereafter, when the on-hook is detected by the off-hook detection circuit 29, an on-hook signal is output from the CPU 26 to the exchange CPU 19 of the exchange 4, and the line relay 2
0, the normally closed contact 20a of the relay 30 is closed, and the dwelling unit telephone 3
And is in a state of waiting for a call signal from the telephone line 2.

The above description is for one embodiment, and the present invention is not limited to this, and it goes without saying that new equipment may be installed without using an existing telephone device. .

[0020]

[Effect] As is clear from the above description, according to the communication system for a collective housing of the present invention, a camera unit is provided in a collective entrance machine installed in a collective entrance, and a dwelling unit telephone, a monitor unit and a dwelling unit adapter are provided in each dwelling unit. Is provided, transmission and reception of audio signals, video signals, and the like can be performed by multiplexing with two lines. For this reason, using a device and wiring provided with an exchange for switching the connection between the dwelling unit telephone and the telephone line or the collective entrance,
It can be easily installed, and the image of the entrance hall can be monitored, so that security in crime prevention can be ensured.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a call system for an apartment house according to the present invention.

FIG. 2 is a block diagram showing the collective entrance machine of the embodiment shown in FIG.

FIG. 3 is a block diagram showing the exchange of the embodiment shown in FIG. 1;

FIG. 4 is a block diagram showing the dwelling unit adapter of the embodiment shown in FIG.

FIG. 5 is a block diagram showing a monitor of the embodiment shown in FIG. 1;

FIG. 6 is a diagram showing a conventional multi-unit communication device.

[Explanation of symbols]

 S: Call system for multiple dwelling house 2: Telephone line 3: Dwelling telephone 4: Switchboard 7: Entrance door 15. Camera unit 16 Image FM modulation circuit 18 Data transmission / reception circuit 19 Exchange CPU 20 Line relay 24 ································································································································································· First- Off-hook detection circuit 30 Relay 31 Collective entrance transmitting / receiving amplifier 32 Data transmission circuit 34 Second normally open contact 35 ... Monitor unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 9/00-9/10

Claims (1)

(57) [Scope of request for utility model registration] [Claim 1 wherein said dwelling electrodeposition phone line (2) and dwelling units phones that are installed in each dwelling unit are connected (3), the telephone line or set front door provided aggregate entrance station to (7)
An exchange system (4) for switching connection of a talker , comprising : a camera unit (15); and a video signal generated by the camera unit (15). A video FM modulation circuit (16) for outputting a modulation signal is provided , and each of the dwelling units performs FM demodulation on the video FM modulation signal.
A monitor unit (35) for monitoring an image signal, and a dwelling unit adapter
(24), wherein the dwelling unit adapter connects the exchange
Including a call signal from the collective entrance machine transmitted via
A data reception circuit (25) for receiving a data reception signal;
A first normally open contact when the data reception signal is received
Generating a ringing tone in the dwelling unit telephone via (28)
A ringing tone generation circuit (27) and data from the collective entrance
Disconnects the telephone line when a data reception signal is received.
Replacement relay (30) and on-hook of the dwelling unit telephone
・ Off-hook detection circuit for detecting off-hook (29)
Provided between the relay and the off-hook detection circuit
Amplifies the audio signal and sends it through a second normally open contact (34).
Collective entrance transmission / reception amplifier to output to dwelling unit telephone (31)
And an off-hook detection signal from the off-hook detection circuit
Drives the camera unit and the video FM modulation circuit by
Data transmission circuit (32) for transmitting a drive signal for causing
A ring drive signal when the data reception signal is received.
And sends the first normally open contact to the ringing tone generating circuit.
Closed, off-hook detection from the off-hook detection circuit
Opening a first normally open contact closed by a signal and
The sound generating circuit is stopped, and the second normally open contact is closed.
And connect the reception hall amplifier and the dwelling unit telephone
And put the off-hook detection signal into the
Output to the data transmission circuit and pass through the relay
Input to the relevant machine to drive the camera unit and
The video signal of the visitor is FM-modulated by the video FM modulation circuit.
To the monitor connected to the dwelling unit adapter
And detecting the off-hook from the off-hook detection circuit.
C for outputting a signal from the data transmission circuit to the exchange.
A PU (26), wherein the exchange has the adapter of the dwelling unit in a standby state.
Connect the dwelling unit telephone to the telephone line with a relay
A line relay (20) and a call signal from the collective entrance machine
A data transmission / reception circuit (1) for outputting a data reception signal including
8) inputting a data reception signal to the data transmission / reception circuit
Disconnects the line relay from the telephone line.
Change the line relay when the on-hook signal is received.
Before connecting the dwelling unit telephone to the telephone line.
A switch CP that puts a call signal from the telephone line into a standby state.
U (19) is provided .