JP2003016557A - Residence information board system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly contact a resident to perform appropriate correspondence in the case abnormality occurs in a dwelling unit. SOLUTION: Main controlling parts 2 of a residence information board master unit 1A and a residence information board sub master unit 1B which receive an emergence call command by a transmission signal do not make a ringing tone generating part of a sound generating part 18 generate a ringing tone as in the case a normal call command is received but immediately control a speech communication switching part 34 to switch an input-output terminal Ta1 of a signal separating part 16 from a terminal Ta2 to which a speech communication line Lc from a doorphone 50 is connected to a terminal Ta3 to which a communication line La is connected to forcedly form a speech communication path with an alarm monitoring board 80. Thus, the alarm monitoring board 80 can ask a resident of the dwelling unit about a situation to instruct appropriate correspondence through the residence information board master unit 1A and the residence information board sub master unit 1B and perform arrangement such as contact to a fire department.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing information board system applied to a housing complex such as a condominium.

[0002]

2. Description of the Related Art In recent years, in apartment houses and other apartment houses,
A lobby intercom installed at the common entrance of an apartment complex, an alarm monitoring board installed in a manager's room, a disaster prevention monitoring room, etc., a home information board base unit installed in each dwelling unit, and the outside of the dwelling unit A house information board system is used, which is equipped with an intercom subunit installed in the front) and enables calls between each dwelling unit and the manager's room, and between the lobby intercom connected to the alarm monitoring board of the manager's room. ing. In addition, in such a housing information board system, when various safety devices such as fire detectors and gas leak detectors connected to the housing information board master unit of each dwelling unit operate, a sound or a display to that effect is displayed. Not only the residents are notified by lights, etc., but also the alarm monitoring panel is notified.

FIG. 8 shows an example of the configuration of a conventional home information board system, which is an alarm monitoring board 8 installed in a management room.
0 ', the emergency power supply 90, and the broadcasting facility 91 are respectively connected to the housing information board master unit 100 of each dwelling unit via the multiplex transmission line (and communication line, video line) L1, the emergency power supply line L2, and the audio output line L3.
It is connected to the. In the illustrated example, the home information board master unit 100
One home information board sub-base unit 100 'is connected to
A monitor TV unit 100a provided with a monitor device on the house information board master unit 100 and the house information board sub-unit machine 100 'for displaying images picked up by the television cameras included in the lobby intercom 60 and the doorphone subunit 50.
100a 'is connected, and a video image of a visitor is displayed on the housing information board base unit 100 or the housing information board sub-base unit 100' of each dwelling unit.
Connected to the monitor TV units 100a, 100
It is designed to be displayed on the monitor device a '.

The home information board master unit 100 includes one or more fire detectors S1, a gas / CO composite sensor S2, a crime prevention external set switch SW (auxiliary lock), a crime prevention switch SW1, a call switch SW2, an emergency switch SW3, and the like. Various safety devices are connected, and a warning signal from the fire detector S1, a gas leak signal from the gas / CO combined sensor S2, and CO
When receiving a (carbon monoxide) warning signal, the home information base unit 10
0 of the indicator light or voice is notified to the resident, and when the above switch is operated or operated, the indicator light of the home information board master unit 100 is turned on or blinked to output a voice alarm or installed outdoors. Warning indicator light (not shown)
In addition, the indicator lights of the intercom sub unit 50 are turned on or blinked, and the alarm monitoring panel 80 'is notified of their operation.

When a fire confirmation signal is received from the housing information board master unit 100 of any of the dwelling units through the multiplex transmission line L1, the alarm monitoring board 80 'is installed from the broadcasting facility 91 to the housing information board master unit 100. Output line L3 to the home information board base unit 100 installed in the house near the specified house.
To send a voice warning message through. In addition, in the alarm monitor panel 80 ', the home information board master unit 1 of each dwelling unit
When a signal indicating that an abnormality has been detected is received from 00, the indicator lamp corresponding to each dwelling unit is turned on or blinking, an alarm message is output by voice, and the housing information board master unit 100 of the dwelling unit is called through the multiplex transmission line L1. In response to this call (emergency call), by talking to a resident who has picked up the handset of the home information board base unit 100, the situation at that time is heard, and an appropriate response is instructed.
Ambulances can also be arranged. Further, a lobby intercom 60 installed at a common entrance (lobby) is connected to an alarm monitoring panel 80 ', and between the home information board master unit 100 of each dwelling unit and the lobby intercom 60 via the alarm monitoring panel 80'. You can make calls with.

[0006]

By the way, in the above-mentioned conventional system, since the home information board master unit 100 (or the home information board sub-master unit 100 ') uses the handset to make a call, the alarm monitoring panel 80 is used. Unless the resident picks up the handset even in case of an emergency call from ', the home information board base unit 100
(Or housing information board sub-master 100 ') and alarm monitoring board 80'
No call path was formed between the two, and it was not possible to make a call with the resident of the dwelling unit where the abnormality occurred. Therefore, when the resident does not respond to the emergency call, the manager or the like has to go to the dwelling unit to directly check the situation, which may cause a problem such as delay in responding to the abnormality that has occurred.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a home information board base unit with a voice call function so that an emergency call from an alarm monitoring board can be made to a home. Information board It is possible to talk to a resident without forcing the handset to pick up a handset and to respond to the resident by forcibly forming a communication path with the base unit. It is to provide a housing information board system that can contact the residents and take appropriate measures.

[0008]

In order to achieve the above object, the invention of claim 1 is a lobby intercom installed in a common entrance of an apartment complex, and a doorphone subunit installed outside each dwelling unit. One or more types of safety devices that are installed in each dwelling unit and automatically or manually output a signal to notify the occurrence of an abnormality when the resident's safety is threatened, and a lobby intercom installed in each dwelling unit and the house It is installed in the dwelling unit and the home information board master unit that monitors the output of each safety device installed in the house while forming a call path with the intercom subunit installed outside Is connected to the home information board master unit, and forms a call path between the lobby intercom and the doorphone subunit installed outside the house through the home information board master unit to make a call and make a call. Machine and set It is installed in the management room of the house and connected to the lobby intercom and each home information board master unit by a signal line, and forms a call path between the lobby intercom, the home information board master unit and the home information board sub-master unit. The home information board master unit is equipped with an alarm monitoring panel for making a call, and when any of the safety devices outputs a signal notifying that an abnormality has occurred, at least an alarm sound or alarm according to the occurrence of the abnormality and the type of the abnormality that has occurred. In a housing information board system that generates a message to notify residents in the house and informs an alarm monitoring board via a signal line, a microphone and a speaker, and an intercom subunit or an alarm monitoring board via the microphone and the speaker. Simultaneous call processing means for making a loud simultaneous call through a call path formed between them, and emergency call detection for detecting an emergency call from the alarm monitoring panel And a call path forming means for forcibly forming a call path with the alarm monitoring board when the emergency call detecting means detects an emergency call from the alarm monitoring board. In addition, the home information board master unit can make simultaneous voice calls, and a call path is forcibly formed between the home information board master unit and the alarm monitoring panel by the call forming means in case of an emergency call from the alarm monitor panel. By doing so, it is possible to talk to the resident with the alarm monitoring panel by using the loud call function of the home information board base unit without requiring the resident's response operation such as picking up the handset, and an abnormality occurred in the dwelling unit. In such cases, we can promptly contact the residents and take appropriate measures.

According to a second aspect of the present invention, in the first aspect of the present invention, the alarm monitoring panel is provided with individual calling means for individually calling the home information board master unit and the sub-base unit of the housing information panel of each dwelling unit. , You can call the home information board master unit of each dwelling unit and the house information board sub-master unit individually from the alarm monitoring panel,
When an abnormality occurs in a dwelling unit, it is possible to immediately contact the resident and take appropriate action.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the alarm monitoring panel is provided with a simultaneous emergency calling means for making an emergency call to the home information panel master unit and the sub-master unit of the housing information panel simultaneously. When an abnormality occurs in a dwelling unit, the resident can be contacted promptly and surely and appropriate action can be taken.

The invention of claim 4 is the invention of claim 1 or 2 or 3.
In the invention of claim 1, a microphone and a speaker, a simultaneous call processing means for making a simultaneous loud call through the microphone and the speaker, and an emergency call detecting means for detecting an emergency call from the alarm monitoring panel via the home information board master unit, When an emergency call from the alarm monitoring panel is detected by the emergency call detection means, the home information board is connected to the home information board master unit and a call path forming means for forcibly forming a call path with the alarm monitoring board. If the resident is not near the home information board base unit, the home information board base unit and the home information board sub-base unit are usually installed in different locations within the dwelling unit. However, there is a high possibility that you will be able to talk to the resident through the communication channel that is compulsorily formed with the sub-base of the housing information board, and if there is an abnormality in the dwelling unit, you will be able to contact the resident quickly and reliably. To take appropriate measures Kill.

According to a fifth aspect of the invention, in the invention of the fourth aspect, the level of the transmission signal picked up by the microphone when the call is compulsorily formed by the communication path forming means is increased more than in the steady state. It is characterized in that the housing information board master unit and the housing information board sub-master unit are provided with a transmission signal level changing means to allow the resident of the dwelling unit in which an abnormality has occurred from the housing information board master unit and the housing information board sub-master unit. Even if the user is in a distant place or can make only a small voice, the voice of the resident can be heard on the alarm monitoring panel side by raising the level of the voice signal by the voice signal level varying means.

According to a sixth aspect of the present invention, in the fourth aspect of the present invention, an alarm generation means for generating an alarm sound or an alarm message and an alarm output means for outputting the alarm sound or the alarm message generated by the alarm generation means from a speaker. And an alarm output control means for controlling the alarm output means to reduce the level of an alarm sound or an alarm message output from the speaker when the communication path is compulsorily formed by the communication path forming means. The alarm sound and the alarm message are heard in the dwelling unit where an abnormality occurs, but the alarm output control means reduces these levels to monitor the alarm. It will not interfere with the call to the board.

According to a seventh aspect of the present invention, in any one of the first to fourth aspects of the present invention, when any one of the safety devices outputs a signal indicating the occurrence of an abnormality, the type of the safety device that outputs the signal is displayed. The home information board master unit is provided with the display means, and it is possible to inform the resident of what kind of abnormality has occurred reliably and easily.

According to an eighth aspect of the present invention, in any one of the first to fourth aspects of the present invention, there is provided a call detecting means for individually detecting a call from the lobby intercom, the intercom subunit or the alarm monitoring panel, and the call detecting means. A ringing tone generating means for generating a ringing tone corresponding to a calling source when a call is detected, and a ringing tone outputting means for outputting a ringing tone generated by the ringing tone generating means from a speaker. It is characterized by being equipped with a sub-master unit, and it can output a ringing sound according to the preference of the resident from a speaker, and call out whether the calling source is a lobby intercom, intercom subunit or alarm monitoring panel. It can be easily identified from the sound.

According to a ninth aspect of the invention, in the eighth aspect of the invention, a back tone transmitting means for transmitting a back tone to the calling source is provided in the house information board master unit and the house information board sub-master unit. Therefore, by sending the same back tone to any calling source of the lobby intercom, the intercom subunit, or the alarm monitoring panel, it is possible to give a unified feeling to the calling operation.

According to a tenth aspect of the present invention, in the ninth aspect of the invention, the back tone transmitting means transmits the ringing tone generated by the ringing tone generating means as a back tone. A back tone with the same sound can be sent to the calling lobby intercom, doorphone subunit, or alarm monitoring panel.

The invention of claim 11 is characterized in that, in the invention of claim 9, a back tone generating means for generating a back tone is provided in the house information board master unit and the house information board sub-master unit, and the resident's preference. It is possible to send the back tone corresponding to the above to the lobby intercom, the intercom subunit, or the alarm monitoring panel which is the calling source.

According to a twelfth aspect of the present invention, in any one of the first to fourth aspects of the present invention, there is provided a call detecting means for individually detecting a call from the lobby intercom, the intercom subunit or the alarm monitoring panel, and the call detecting means. The home information board master unit and the sub-base unit of the housing information board are equipped with call display means for displaying a call according to the call source when the call is detected, and the call source is a lobby intercom, intercom subunit or alarm. It is possible to easily discriminate which one of the monitoring boards is displayed from the display of the calling means.

According to a thirteenth aspect of the present invention, in the first aspect of the present invention, the lobby intercom includes image pickup means for picking up an image of a visitor and video signal transmission means for transmitting a video signal output from the image pickup means to the home information board master unit. And video display means for displaying an image, which is provided in at least one of the intercom subunits, and video signal processing means for processing the video signals transmitted from the lobby intercom or intercom subunits and displaying them on the video display means. , A recording means for recording the video signal transmitted from the lobby intercom or the intercom subunit and the voice received from the lobby intercom or the intercom subunit, are installed in the home information board base unit, and are visited during absence. The video and voice (message) of the visitor are recorded in the recording means, and after returning home, the video signal and the reception signal recorded in the recording means are reproduced. It is possible to ascertain a person requirements.

According to a fourteenth aspect of the present invention, in the thirteenth aspect of the present invention, the home information board master unit is provided with a video signal output means for signal-processing the video signal transmitted from the lobby intercom or doorphone subunit and outputting the signal to the outside. Characterized by
For example, by displaying the image of the visitor on a screen of a television, a personal computer, or the like, the image can be displayed easily.

According to a fifteenth aspect of the present invention, in any one of the first to fourth aspects of the present invention, there is provided a call detecting means for individually detecting a call from the lobby intercom, the intercom subunit or the alarm monitoring panel, and the call detecting means. A residence information board master unit and a residence, which include a response message generation unit that generates a response message according to a calling source when a call is detected, and a response message transmission unit that transmits the response message generated by the response message generation unit to the calling source. It is characterized in that it is provided in the information board sub-base unit, and the response message returned to the caller when the resident is absent can be changed to different contents for each caller.

According to a sixteenth aspect of the present invention, in any one of the first to fourth aspects of the present invention, a dedicated line is connected to the housing information board master unit and the housing information panel sub-master unit of each dwelling unit, and each is connected via a dedicated line. The housing information board master unit and the housing information board sub-master unit are usually equipped with a broadcasting facility that broadcasts an alarm sound or warning message to the housing information board master unit and the housing information board sub-master unit at the same time. Since it is installed in a different place in the dwelling unit, even if the resident is not near the home information board master unit, the sub-base unit of the housing information panel increases the possibility that the resident will hear the broadcast, improving safety. ..

According to a seventeenth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the apparent impedance of each communication path formed between the lobby intercom, the intercom sub-unit, and each device of the alarm monitoring panel. It is characterized in that the impedance of the door information device from the main unit of the home information board and the impedance of the alarm monitoring panel or lobby intercom from the main unit of the home information panel are omitted. By making the same adjustment, it is possible to improve the communication quality between the housing information board master unit or the housing information board sub-base unit and each device.

According to an eighteenth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the transmission / reception gain of each communication path formed between the lobby intercom and each device of the alarm monitoring panel is individually adjusted. Characterized in that the transmission / reception gain adjusting means is provided in the housing information board master unit and the housing information board sub-master unit,
A call can be made at an appropriate volume when a call is made between the home information board master unit and the sub-base unit of the house information board and the lobby intercom and the alarm monitoring panel.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) FIG. 2 shows an example of the overall configuration of a house information board system according to this embodiment. However, the same components as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted. The system of the present embodiment includes a lobby intercom 60 installed at a common entrance of an apartment house, an alarm monitoring board 80 installed in a management room of the apartment house, and a home information board master unit 1A installed in each dwelling unit. In addition, the home information board sub-base unit 1B and the intercom subunit 50 installed outside each dwelling unit are provided. Further, similarly to the conventional example, an emergency power source 90 and a broadcasting facility 91 are installed in the manager's room or the like together with the alarm monitoring panel 80, and the home information board master unit of each dwelling unit is provided via the emergency power source line L2 and the audio output line L3, respectively. Connected to 1A. And the alarm monitoring board 80 and the home information board base unit 1A of each dwelling unit,
Lobby intercom 6 and audio signals such as call voice and alarm sound
0 is equipped with a communication line La for multiplex transmission of video signals picked up by the television camera 68, and a control line Lb for multiplex transmission of control signals such as call and alarm. Here, the communication line La and the control line Lb are collectively referred to as an information trunk line L1. Although the present embodiment exemplifies a configuration in which a video signal and an audio signal are multiplexed and transmitted, the video signal may be configured to be transmitted by an independent video transmission line.

FIG. 3 is a block diagram showing the configuration of the lobby intercom 60 and the alarm monitoring board 80 in this embodiment. The lobby intercom 60 includes a signal processing unit 61 having a CPU as a main component, an operation unit 62 including a numeric keypad and a call button, a display unit 63 including a display lamp and a liquid crystal display, and a control line Lb. Alarm monitoring panel 8
A transmission / reception unit 64 for transmitting / receiving a control signal to / from 0,
It has a microphone 65 and a speaker 66, a call control section 67 for making a loud call with the home information board master unit 1A and an alarm monitoring board 80 using the microphone 65 and the speaker 66, and an image pickup device such as a CCD. A TV camera 68, a video signal processing unit 69 that processes the output of the TV camera 68 and outputs a video signal, and a call control unit 67.
An input / output process for multiplexing the audio signal output from the video signal processing unit 69 and the video signal output from the video signal processing unit 69 and transmitting the multiplexed audio signal to the communication line La and outputting the audio signal transmitted via the communication line La to the call control unit 67. And a section 70.

On the other hand, the alarm monitoring board 80 includes a signal processing section 81 having a CPU as a main component, an operating section 82 having a numeric keypad and a call button, and a display section 83 having a display lamp and a liquid crystal display. A transmission / reception unit 84 that transmits / receives a control signal to / from each home information panel master unit 1A, the home information panel sub master unit 1B, and the lobby intercom 60 via the control line Lb.
Using the handset 85, the voice generation unit 86 that generates an alarm sound or an alarm message, and the handset 85 between the home information board master unit 1A, the house information panel sub-base unit 1B, and the lobby intercom 60. A call control section 87 for making a simultaneous call is provided. In addition, whether the alarm sound or the like generated by the voice generation unit 86 is transmitted from the call control unit 87 to the respective home information board master device 1A, the home information board sub-master device 1B, and the lobby intercom 60 via the communication line La, Alternatively, it is simultaneously broadcast from the broadcasting facility 91 to each housing information board master unit 1A and housing information board sub master unit 1B via the audio output line L3.

FIG. 1 is a block diagram showing the configuration of the home information board master unit 1A and the intercom slave unit 50 in the present embodiment, in which the home information board master unit 1A and the intercom slave unit 50 are connected by a call line Lc. There is. The intercom subunit 50 includes a microphone 51, a speaker 52, a 2-line to 4-line conversion unit 53, a television camera 54 having an image pickup device such as a CCD, and a signal processing of the output of the television camera 54 to output a video signal. The video signal processing unit 55, the audio signal output from the 2-line to 4-line conversion unit 53, and the video signal output from the video signal processing unit 55 are multiplexed and sent to the call line Lc and sent by the call line Lc. 2 voice signals received
An input / output processing unit 56 for outputting to the line-to-four-line conversion unit 53 and a call signal transmission unit 57 for transmitting a call signal by changing the voltage level of the communication line Lc when the call button 57a is operated. ing.

The home information board master unit 1A includes a main control unit 2 having a CPU as a main component, an operation unit 3 including a response button 3a, a storage unit 4 including a non-volatile memory such as an EEPROM, and a control unit. A transmission / reception unit 5 for transmitting / receiving a control signal to / from the alarm monitoring panel 80 via the line Lb, and the fire detector S1,
Gas / CO combined sensor S2, crime prevention external set switch S
Various safety devices such as W, crime prevention switch SW1, call switch SW2, and emergency switch SW3 are connected, and a warning signal of the fire detector S1, a gas leak signal from the gas / CO composite sensor S2, or an operation signal of the call switch SW2, etc. Signal monitoring unit 6, a call detection unit 7 that monitors a voltage level change of the communication line Lc to detect a call signal from the intercom subunit 50, a commercial AC power supply AC or an emergency power supply 90.
The power supply unit 8 which receives power supply from the home information board master unit 1A and the sub-base unit 1B of the house information board, and a power source for the power supply unit 8 are commercial AC power supply AC and emergency power supply 90.
And a power source switching unit 9 for switching to.

The home information board base unit 1A also processes the video signal from the microphone 10 and the speaker 11, the monitor unit 13 including a CRT or a liquid crystal display, the intercom subunit 50 or the lobby intercom 60, and monitors the video signal. An image display unit 1 for displaying an image on 13 and displaying (superimposing) a predetermined symbol (described later) according to a display control signal provided from the main control unit 2.
4, a signal separation unit 16 for separating an audio signal and a video signal that are multiplexed and transmitted from the intercom subunit 50 or the lobby intercom 60, the 2-line to 4-line conversion unit 15, the intercom subunit 50, and alarm monitoring. Board 80 and housing information board sub-master 1
Simultaneous call processing unit 17 that performs a process for realizing a loud-speaking simultaneous call with B and a process for realizing a loud-speaking call with lobby intercom 60, and a ringing tone, a back tone, an alarm message, or the like. A voice generation unit 18 that generates an alarm sound or the like, a microphone amplifier 19 that amplifies an output signal (sending signal) of the microphone 10, and a first A that converts the analog sending signal amplified by the microphone amplifier 19 into a digital signal. A D / A conversion unit 20, a first D / A conversion unit 21 for converting a digital transmission signal output from the simultaneous call processing unit 17 into an analog signal, and a first D / A conversion unit 21.
A voice transmission signal amplifier 22 that amplifies the analog voice transmission signal converted by the D / A conversion unit 21, and a reception signal amplifier 2 that amplifies the voice signal (reception signal) separated by the signal separation unit 16.
3 and a second A / D converter 24 for converting the analog reception signal amplified by the reception signal amplifier 23 into a digital signal.
And a second D / A converter 25 for converting a digital received signal output from the simultaneous call processor 17 into an analog signal.
A first speaker amplifier 26 that amplifies the analog reception signal converted by the second D / A converter 25; and a first speaker amplifier 26 that converts a digital voice signal such as a ringing tone generated by the voice generator 18 into an analog signal. 3D / A converter 27, and 3D / A
A second speaker amplifier 28 for amplifying the analog audio signal converted by the A converter 27, and a first speaker amplifier 26.
The first analog signal multiplexer 29 for multiplexing the received signal amplified by the second speaker amplifier and the voice signal such as the ringing sound amplified by the second speaker amplifier 28 and the input terminal Ts1 of the speaker 11
The broadcast signal switching unit 30 for switching between the output terminal Ts2 of the analog signal multiplexing unit 29 and the connection terminal Ts3 to which the audio output line L3 is connected, and the digital audio signal such as the ringing sound generated by the audio generation unit 18 are converted into analog signals 4D to convert to
An A / A converter 31, an audio signal amplifier 32 that amplifies the analog audio signal converted by the fourth D / A converter 31,
A second analog signal multiplexing unit 33 that multiplexes the transmission signal amplified by the transmission signal amplifier 22 and the voice signal such as a ringing tone amplified by the voice signal amplifier 32 and outputs the multiplexed signal to the 2-line to 4-line conversion unit 15. The signal separation unit 16 includes a call switching unit 34 that switches the input / output terminal Ta1 to the terminal Ta2 connected to the communication line Lc from the intercom subunit 50 and the terminal Ta3 connected to the communication line La. In the present embodiment, the simultaneous call processing unit 17 and the voice generation unit 18 are connected to the digital signal
It is composed of a processor (DSP), and the hardware of the DSP is controlled by dedicated software to realize the functions of a simultaneous call processing unit 17 and a voice generation unit 18, which will be described later. Further, a connector CN for outputting a video signal is connected to the output end of the video display unit 14, and by connecting to the connector CN, the monitor unit 13 is displayed on the screen of a monitor device of a television receiver or a personal computer. The same image can be displayed.

On the other hand, since the housing information board sub-base unit 1B has almost the same constituent elements as the housing information board master unit 1A as shown in FIG. 4, the same reference numerals are given to the same constituent elements. And the description is omitted.

Housing information board base unit 1A (house information board sub-base unit 1
The simultaneous call processing unit 17 (also for B) is an acoustic echo canceller 35 that eliminates acoustic echo generated by acoustic coupling between the microphone 10 and the speaker 11, as shown in FIG.
, A line echo canceller 36 for canceling line echo caused by acoustic coupling in the intercom subunit 50, the lobby intercom 60 or the alarm monitoring panel 80 or the wraparound of a signal via the communication line La, and an acoustic echo canceller 35.
And the line echo canceller 36, an audio switch 37 for suppressing howling by reducing the loop gain of a closed loop (echo path) formed by the acoustic echo path and the line echo path, and the acoustic echo canceller 35.
And a transmission-side amplifier 38 and a reception-side amplifier 39 with a gain control function, which are provided on the signal paths of the transmission signal and the reception signal sandwiched between the line echo cancellers 36, respectively.

The acoustic echo canceller 35 is an application already filed by the present applicant (Japanese Patent Application Nos. 2001-175520 and 20).
01-175521), the speaker 11 includes an adaptive filter 35a and a subtractor 35b.
An echo component that is adaptively identified by the adaptive filter 35a in the impulse response of the return path (acoustic echo path) formed by the acoustic coupling between the microphones 10 and estimated from the reference signal (the reception signal output from the voice switch 37). By subtracting (acoustic echo) from the output signal (transmitting signal) of the first A / D conversion section 20 by the subtractor 35b, the echo component is canceled and erased. In addition, the line echo canceller 36 also has an adaptive filter 36a and a subtractor 36b.
The two-wire to four-wire conversion unit 15 has a conventionally known configuration including
Adaptive filter for the impulse response of the return path (line echo path) formed by reflection due to impedance mismatch between the communication line La and the communication line La or the communication line Lc and acoustic coupling between the speaker and the microphone in the intercom subunit 50 or the like. 36a adaptively identifies the reference signal (first D
The echo component (line echo) estimated from the transmission signal output to the A / A converter 21 is subtracted from the reception signal by the subtractor 36b to cancel and cancel the echo component.

The voice switch 37 includes a transmitting signal attenuator 37a for inserting a loss in the transmitting side signal path, a receiving signal attenuator 37b for inserting a loss in the receiving side signal path, and a transmitting side and a receiving side. Amount of loss (each attenuator 3) inserted from the attenuators 37a and 37b into the signal paths on the transmitting side and the receiving side, respectively.
7a, 37b) attenuator gain control unit 37 for controlling
c and. Further, the attenuator gain control unit 37c returns the sound from the output point of the reception signal attenuator 37b to the input point of the transmission signal attenuator 37a via the acoustic echo path (hereinafter referred to as "acoustic side feedback path"). The line side of the path (hereinafter referred to as "line-side feedback path") that estimates the side feedback gain and returns from the output point of the transmission signal attenuator 37a to the input point of the reception signal attenuator 37b via the line echo path. The feedback gain is estimated, and the sum of the loss amounts to be inserted into the closed loop based on the estimated values α and β of the feedback gains on the acoustic side and the line side (the insertion loss amount of the transmission signal attenuator 37a and the reception signal attenuator 37b). The total loss amount calculation unit 37d that calculates the sum of the insertion loss amounts) and the call state are estimated by monitoring the transmission signal and the reception signal, and according to the estimation result and the calculation value of the total loss amount calculation unit 37d. Transmission signal attenuator 37a and The reception signal attenuator 37b includes an insertion loss amount distribution processing unit 37e that determines the distribution of each insertion loss amount, that is, the gain.

The total loss amount calculating section 37d estimates the time average power of the input signal of the transmission signal attenuator 37a in a short time by using a rectifying smoother, a low pass filter, etc. The time average power of the output signal of the reception signal attenuator 37b is estimated by using a pass filter or the like, and the time average power of the output signal of the reception signal attenuator 37b is estimated at the maximum delay time assumed in the acoustic side feedback path. Of the estimated value of the input signal of the transmission signal attenuator 37a is divided by this minimum value to obtain an estimated value α of the feedback gain on the acoustic side, and The time average power of the input signal of the reception signal attenuator 37b in a short time is estimated by using a low-pass filter or the like, and the transmission signal attenuator 3 by using a rectifying smoother, a low-pass filter or the like. The time average power of the output signal of a is estimated in a short time, and the minimum value of the estimated value of the time average power of the output signal of the transmission signal attenuator 37a is obtained at the maximum delay time assumed in the line side feedback path, A value obtained by dividing the estimated value of the time average power of the input signal of the reception signal attenuator 37b by this minimum value is taken as the estimated value β of the line side feedback gain.
Then, the total loss amount calculation unit 37d calculates the total loss amount required to obtain a desired gain margin from the respective estimated values α and β of the acoustic side feedback gain and the line side feedback gain, and distributes the total loss amount. It is output to the processing unit 37e.

In the insertion loss amount distribution processing unit 37e, the input / output signal of the transmission signal attenuator 37a and the reception signal attenuator 37b are included.
I / O signals are monitored, and the call status (listening status, sending status, etc.) is determined from information such as the magnitude relationship of the power levels of these signals and the presence / absence of a voice signal, and according to the determined call status The insertion loss amount (gain) of each attenuator 37a, 39 is adjusted so that the total loss amount is distributed to the transmission signal attenuator 37a and the reception signal attenuator 37b in a ratio.

By the way, the adaptive filters 35a and 36 of the acoustic echo canceller 35 and the line echo canceller 36, respectively.
It usually takes a learning time of several seconds for a to identify the impulse response of each feedback path on the acoustic side and the line side. In other words, the acoustic echo canceller 35 and the line echo canceller 34 cannot cut off the respective return paths for a few seconds immediately after the start of the call, and a closed loop is formed in the call system. In such a state, the voice uttered by the caller is perceived by the caller as an echo, which causes discomfort. If the gain of the amplifier is large, howling will occur.

Therefore, in order to prevent howling even in a state where the echo cancellers 35 and 36 have not converged (learning state for identifying impulse response) immediately after the start of a call, the closed loop loop gain exceeds 1 time. It is necessary to design the gain of each amplifier so that it does not exist. this is,
Obviously, it imposes a restriction on the call volume, and in the case where the housing information board base unit 1A has a housing in which the speaker 11 and the microphone 10 are close to each other and acoustic coupling gain is large, there is no problem in practical use. The call volume may not be obtained.

The above is the adaptive filters 35a, 3 of the acoustic echo canceller 35 and the line echo canceller 36.
It is assumed that the coefficients of 6a are all reset to 0 at the start of the call. On the other hand, the adaptive filter 35
A method of giving initial values of coefficients to a and 36a is also conceivable, but since the characteristics of each feedback path on the acoustic side and the line side to be identified by the adaptive filters 35a and 36a differ depending on the installation environment of the housing. There is a possibility that the preset initial value may not provide the canceling effect of the feedback paths on the acoustic side and the line side at all. Therefore, even in such a system, it is inevitable that the call volume is restricted.

Therefore, in this embodiment, the total loss amount calculation unit 3
7d is an update mode in which the total amount of loss to be inserted into the closed loop is calculated and adaptively updated based on the estimated values α and β of the feedback gains as described above, and a fixed amount of fixed total loss amount is fixed to a predetermined initial value. It has two operation modes, a fixed mode and an acoustic echo canceller 35 and a line echo during the period from the start of a call with an outdoor call terminal until the acoustic echo canceller 35 and the line echo canceller 36 fully converge. In the period after the canceller 36 has sufficiently converged, it operates in the update mode. That is, in the total loss amount calculation unit 37d, the estimated values α and β of the acoustic side feedback gain and the line side feedback gain are both maintained for a predetermined time (several hundreds of milliseconds) or more from the start of the call, and the predetermined threshold ε (for example, the call start 10d for each estimated value α, β at time
It is considered that the acoustic echo canceller 35 and the line echo canceller 36 have sufficiently converged when the value is less than B-15 dB smaller value), and before the time point described above, the total loss amount is fixed to the initial value and is operated in the fixed mode. After the time point, the operation mode is switched to the update mode in which the total loss amount is adaptively updated based on the estimated values α and β. The initial value of the total loss amount in the fixed mode is set to a value that is sufficiently larger than the total loss amount that is updated at any time in the update mode.

When the acoustic echo canceller 35 and the line echo canceller 36 are not sufficiently converged immediately after the start of the call, the total loss amount calculating section 37d operating in the fixed mode sets them to sufficiently large values. Since the total loss amount of the initial value is inserted into the closed loop, it is possible to suppress the generation of unpleasant echoes (acoustic echo and line echo) and howling, and realize stable half-duplex communication. When the acoustic echo canceller 35 and the line echo canceller 36 have converged sufficiently after the start of the call, the operation mode of the total loss amount calculation unit 37d is switched from the fixed mode to the update mode and inserted into the closed loop. Since the total loss amount is reduced to a value sufficiently lower than the initial value, bidirectional simultaneous call can be realized.
In addition, by setting the initial value of the total loss amount to an appropriate value, the loop gain of the closed loop becomes 1 time in order to prevent howling in a state where the acoustic echo canceller 35 and the line echo canceller 36 are not converged immediately after the start of the call. There is no restriction to design the gain of each amplifier so as not to exceed the limit, and the gain of the amplifier is designed to obtain a desired speech volume regardless of the shape or structure of the housing of the home information board master unit 1A. You can

Further, in this embodiment, amplifiers 38 and 39 having a gain control function (AGC) for varying the gain according to the level of the input signal (sending signal or receiving signal) are used as the sound volume adjusting amplifiers. They are provided on the signal paths of the transmission signal and the reception signal sandwiched between the echo canceller 35 and the line echo canceller 36, respectively. Since the configuration and operation of the amplifier with a gain control function are well known in the art, detailed description thereof will be omitted.

For example, each amplifier 3 on the transmitting side and the receiving side
As the gain control characteristics of Nos. 8 and 39, the gain is G in the range where the input signal level is below the minimum value of the input signal that can be regarded as voice.
1 [dB], the gain is G2 in the range from the minimum value of the input signal level to the maximum value of the assumed call voice level.
[DB], the gain is G3 [dB] when the input signal level is above the maximum value, and the gain G1 in the range below the minimum value of the input signal and the gain G3 above the maximum value are set to relatively small values. In addition, if the gain G2 in the range of the minimum value and the maximum value of the input signal is set to a value that is sufficiently larger than the gains G1 and G3, when the acoustic signal collected by the microphone 10 can be regarded as a call voice. Is a gain G2 necessary to obtain a desired call volume, and is small against a minute level of ambient noise that cannot be regarded as a call voice and an excessive level of environmental noise (wind noise, construction noise, automobile noise, etc.). Since the gain is G1 or G3, the feedback gain α,
It is possible to obtain an appropriate call volume while reducing β.
When an excessively high level call signal is input, the simultaneous call processing unit 17 is processed by saturation processing of the amplifiers 38 and 39.
It is possible to prevent the occurrence of problems such as overflow in the interior.

Further, in the present embodiment, the far-end side background noise level estimating section 40 for estimating the far-end side background noise level included in the reception signal and the near-end side background noise level included in the transmission signal are compared. Near-end side background noise level estimation unit 41 for estimating
And a reception-weighted mode setting amplifier GR that amplifies a reception signal monitored by the insertion loss amount distribution processing unit 37e, and a transmission-weighted mode that amplifies the transmission signal monitored by the insertion loss amount distribution processing unit 37e. A biasing mode for adjusting the gains of the setting amplifier GT, the far-end side background noise level and the near-end side background noise level, and the gains of the reception bias mode setting amplifier GR and the transmission bias mode setting amplifier GT, respectively. The control unit 42 is provided in the simultaneous call processing unit 17.

Both the far-end side background noise level estimating section 40 and the near-end side background noise level estimating section 41 are realized by an integrating circuit or a digital filter having a characteristic that the rising is gentle and the falling is sharp. The far-end side background noise level estimation unit 40 estimates the background noise (background noise) level that constantly exists in the reception signal output from the reception-side amplifier 39, and the near-end side background noise level estimation unit 41.
Then, the background noise level that constantly exists in the transmission signal output from the transmission side amplifier 38 is estimated.

If the estimated value PFn of the background noise level on the far end side is sufficiently larger than the estimated value PNn of the background noise level on the near end side, the biased mode control unit 42 (PFn >> PN).
n), the gain of the transmission bias mode setting amplifier GT is set to G [d
B], the gain of the reception bias mode setting amplifier GR is set to 0 [d
B], the voice switch 37 is set to the transmission bias mode, and if the estimated value PNn of the near-end side background noise level is sufficiently larger than the estimated value PFn of the far-end side background noise level (PNn >> PFn), the gain of the reception bias mode setting amplifier GR is set to G [dB], and the gain of the transmission bias mode setting amplifier GT is set to 0 [dB].
7 is set to the reception weighted mode, and if the difference between the estimated value PFn of the far-end side background noise level and the estimated value PNn of the near-end side background noise level is not sufficiently large, the reception weighted mode setting amplifier GR and the transmitter GR are transmitted. The voice switch 37 is set to the neutral mode by setting each gain of the talk bias mode setting amplifier GT to 0 [dB].

That is, when the difference between the ambient noise level on the far end side and the ambient noise level on the near end side is large, the insertion loss amount distribution processing unit 37e for monitoring the transmission signal and the reception signal to estimate the communication state. , For example, when the ambient noise level on the far end side is large, it is always judged as the receiving state, and when the ambient noise level on the near end side is large, it is always judged as the transmitting state, regardless of the actual talking state. In some cases, a phenomenon in which the call state is fixed to either the receiving state or the transmitting state (so-called one-sided tilt of the voice switch 37) may occur.

Therefore, in the present embodiment, as described above, the weighted mode control unit 42 causes the far-end side background noise level estimation value PF to be calculated.
n is compared with the estimated value PNn of the background noise level on the near end side, and if the estimated value PFn of the background noise level on the far end side is sufficiently larger, the transmission signal monitored by the insertion loss amount distribution processing unit 37e is transmitted. By amplifying only the gain G [dB] by the bias mode setting amplifier GT, the insertion loss amount distribution processing unit 37e sets the state in which it is easy to determine the transmission state (transmission bias mode), and conversely the near end side background. If the estimated value PNn of the noise level is sufficiently larger, the insertion loss amount distribution processing unit 37e amplifies the reception signal monitored by the reception deviation weighted mode setting amplifier GR by the gain G [dB] to distribute the insertion loss amount. By setting the processing unit 37e to a state in which it is easy to determine that it is the receiving state (listening-weighted reception mode), the voice switch 37 is prevented from falling down.

On the other hand, the voice generating unit 18 is a ringing tone generating unit (not shown) that appropriately selects from a plurality of ringing tones prepared in advance to generate a digital ringing tone, and a plurality of ringing tones prepared in advance. The alarm sound generator (not shown) that generates a digital alarm sound by appropriately selecting one of the alarm sounds, and a plurality of voice message data compressed and stored in the built-in or external memory are appropriately selected. A voice message decompression unit (not shown) that generates a digital voice message by reading and decompressing, and a plurality of melody sound data that are also compressed and stored in the memory are appropriately selected and read and decompressed. And a melody sound decompression unit (not shown) for generating the melody sound of. Here, the alarm sound is for notifying the residents of the occurrence of an abnormality such as a fire or a gas leak, the voice message is a message (alarm message) for notifying the abnormality, and the melody sound is the ringing tone. Is used as.

The voice generation unit 18 is a specific sound generation unit for generating a specific sound as an excuse for allowing the other party to hear and canceling the call, or a specific sound for expanding the specific sound data compressed and stored in the memory. It has at least one of the extending portions. For example, outdoor call terminals (lobby intercom, etc.)
When the person at home responded to the call from, the person at the other end (calling party) was a visitor who was not invited, such as a salesman. You may want. In such a case, a sound such as a ringing tone of a telephone or a cry of a child (this is called a "specific sound")
You can create an excuse to stop the call by telling the person you are talking to (calling). For example, "The phone is ringing now, please pick it up." Or "The child is crying. You can immediately cancel the call with the person you do not want to call.

Thus, the voice signal of the special sound such as the ringing tone or the alarm sound or the voice message generated by the voice generating unit 18 is processed by the first or second analog signal multiplexing unit 16 or 29 in the simultaneous call processing unit. The speaker 11 or 2 is time-division multiplexed with the call signal (sending signal and receiving signal) output from 17
It is output to the line-to-four-line conversion unit 15.

Addresses are individually assigned to all the home information board masters 1A and the lobby intercom 60, and the alarm monitoring board 80 uses the addresses to address the home information board masters 1A and the lobby intercom 60.
Has been identified. In the signal processing unit 81 of the alarm monitoring board 80, a transmission signal including address data is transmitted from the transmission / reception section 84 to the control line Lb to sequentially poll each home information board master unit 1A. The main control unit 2 of the information board master unit 1A returns the monitoring status of the safety device by a transmission signal. When the signal monitoring unit 6 receives a warning signal from any of the safety devices, for example, the fire detector S1, the main control unit 2 interrupts the transmission / reception unit 5 to notify the alarm monitoring panel 80 of the occurrence of a fire. Send an embedded signal. When the signal processing unit 81 of the alarm monitoring panel 80 that has received this interrupt signal performs interrupt polling by the transmission signal, a signal with its own address data is returned from the sender home information board master unit 1A and an alarm is issued. The signal processing unit 81 of the monitoring board 80 acquires the address of the home information board master device 1A that is the transmission source. The signal processing unit 81 that has acquired the address causes the transmission signal including the address data to be transmitted from the transmission / reception unit 84, and the main control unit 2 of the home information board master unit 1A that has received the transmission signal indicates that there is an abnormality. A corresponding warning sound or warning message is generated by the warning sound generation unit and the voice message decompression unit of the voice generation unit 18, and the speaker 11 and the additional speaker 9 are generated.
2 (see FIG. 2), the video display unit 14
A display control signal is given to the display unit to display a symbol (for example, a picture of a flame when a fire occurs) indicating the content of the abnormality that has occurred on the screen of the monitor unit 13, and the content of the abnormality that has occurred (a fire in this case), etc. The transmission / reception unit 5 returns a transmission signal including data for informing the alarm to the alarm monitoring panel 80.

In the alarm monitoring panel 80 which has received the above-mentioned abnormality notification data, the signal processing section 81 broadcasts simultaneously to the address of the home information board master unit 1A installed in the dwelling unit near the dwelling unit in which the abnormality has occurred. A transmission signal including a command to broadcast is transmitted from the transmission / reception unit 84, and a transmission including an emergency call command for making an emergency call is made to the address of the housing information board master unit 1A of the dwelling unit in which an abnormality has occurred. A signal is transmitted from the transmission / reception unit 84, and an alarm sound or the like generated by the sound generation unit 86 is transmitted to the broadcasting facility 91.
To the audio output line L3. Here, the transmission signal transmitted from the alarm monitoring board 80 to the housing information board master device 1A includes a command for designating the housing information board sub-master device 1B connected to the housing information board master device 1A as a destination. You can Therefore, in the alarm monitor panel 80, the home information board master unit 1A and the house information panel sub-master unit 1B in the same dwelling unit are individually designated as destinations of the emergency call command, the broadcast command, or a call command described later. Therefore, the transmission signal including the command with the destination of the housing information board sub-base unit 1B is transferred from the housing information board sub-base unit 1A to the housing information board sub-base unit 1B.

In the house information board master unit 1A and the house information board sub-master unit 1B of the neighboring dwelling units that have received the broadcast command, the main control unit 2 controls the broadcast switching unit 30 to input the speaker 11. In order to switch the terminal Ts1 from the output terminal Ts2 of the first analog signal multiplexing unit 29 to the connection terminal Ts3 to which the audio output line L3 is connected, the speaker 1 of each house information board master unit 1A and house information board sub-master unit 1B
An alarm sound or the like is output from 1 and a broadcast is performed. In this way, since the broadcasting of the housing information board sub-base unit 1B is also carried out, even if the resident is not near the housing information board base unit 1A, the residents can listen to the broadcasting by the housing information board sub-base unit 1B. It has the advantages of high reliability and improved safety.

On the other hand, the main control unit 2 of the housing information board master unit 1A and the housing information board sub-master unit 1B which have received the emergency call command by the above-mentioned transmission signal, as in the case where the normal calling command is received, generate the voice generation unit. The call switching unit 34 is immediately controlled without causing the ringing tone generation unit 18 to generate a ringing tone, and the input / output terminal Ta1 of the signal separation unit 16 is connected to the terminal Ta2 to which the communication line Lc from the intercom subunit 50 is connected. To the terminal Ta3 to which the communication line La is connected to compulsorily form a communication path with the alarm monitoring board 80. Therefore, the alarm monitoring board 80 asks the resident of the dwelling unit about the situation through the housing information board base unit 1A and the housing information board sub-base unit 1B to instruct them to take appropriate measures, and to take measures such as contacting the fire department. be able to.

As described above, according to the present invention, the emergency call from the alarm monitoring panel 80 is forced between the home information board master unit 1A and the alarm monitoring panel 80 by the main control section 2 and the call switching section 34 which are call forming means. Call button 3 in order to form a call path
It is possible to talk to the resident with the alarm monitoring panel 80 by using the loud call function of the home information board master unit 1A without requiring the resident's response operation such as pressing a, and an abnormality has occurred in the dwelling unit. In such cases, we can promptly contact the residents and take appropriate measures. Moreover, since the housing information board sub-base unit 1B is forced to form a communication path similarly to the housing information board base unit 1A, it is assumed that the resident is the housing information board base unit 1A.
Even if you are not near, it is more likely that you will be able to talk to the resident through the communication channel that is forcibly formed with the sub-base unit 1B of the housing information board, and you will be able to contact the resident quickly and reliably. it can. Further, in the housing information board master unit 1A and the housing information board sub-master unit 1B, a symbol indicating the content of the abnormality generated by the video display unit 14 is displayed on the screen of the monitor unit 13, so any abnormality occurs. It is possible to inform the resident of the situation reliably and easily.

Here, when a communication path is forcibly formed with the alarm monitoring board 80, an alarm sound or an alarm message is output from the speaker 11 of the home information board master unit 1A and the house information board sub-master unit 1B. If there is a problem, it may interfere with the call with the resident. Therefore, in the main control unit 2 of the home information board master unit 1A and the sub-base unit 1B of the housing information panel, the second speaker is controlled at the same time as or before and after the call switching unit 34 is controlled to form the communication path with the alarm monitoring panel 80. By reducing the gain of the amplifier 28, the level of the alarm sound and the alarm message is reduced, and the alarm sound and the alarm message are prevented from interfering with the conversation with the resident.

Further, in the main control unit 2 of the home information board base unit 1A and the sub-base unit 1B of the home information board, the call switching unit 34 is controlled to form a call path with the alarm monitoring board 80, at the same time or before or after. The gain of the microphone amplifier 19 is increased more than in the steady state, and the level of the transmission signal collected by the microphone 10 is increased. Therefore, the resident of the dwelling unit in which the abnormality has occurred is the home information board master unit 1A and the housing information panel sub-master unit 1B.
Even if the user is in a place away from the speaker or can only make a small voice, by raising the level of the transmission signal by the main control unit 2 which is the transmission signal level changing means, the alarm monitoring panel 80 side can I can hear the voice.

By the way, the visitor is the lobby intercom 6
When the operation unit 62 of 0 is operated to input the dwelling unit number of the visited dwelling unit, the signal processing unit 61 of the lobby intercom 60 transmits the inputted dwelling unit number from the transmission / reception unit 64 to the alarm monitoring panel 80 by a transmission signal. In the alarm monitoring panel 80 that has received this transmission signal, the signal processing section 81 transmits and receives a transmission signal including a call command to the address of the home information board master unit 1A installed in the dwelling unit of the dwelling unit number.
To send from. Further, when the manager operates the operation unit 82 of the alarm monitoring panel 80 and inputs the dwelling unit number of any dwelling unit, the signal processing unit 81 of the dwelling unit of the dwelling unit of the dwelling unit number 1A of the housing information board master unit 1A. A transmission / reception unit 84 transmits a transmission signal including a call command to the address.
Furthermore, when an extension call is made between the housing information board master unit 1A and the housing information board sub-master unit 1B in the dwelling unit, the resident operates the operating unit of the housing information board sub-master unit 1B (or the housing information board master unit 1A). When an extension call button (not shown) of No. 3 is pressed, the main control unit 2 sends an extension call command by a transmission signal to the alarm monitoring panel 8
0, and the signal processing unit 81 of the alarm monitoring board 80 that has received this transmission signal includes a call command to the address of the called home information board master unit 1A (or the house information board sub-master unit 1B). The signal is transmitted from the transmission / reception unit 84. On the other hand, in the housing information board master unit 1A (or the housing information board sub-master unit 1B) that receives the call command by the transmission signal,
The main controller 2 outputs a preset ringing tone to the voice generator 1.
8 is generated by the ringing tone generator or the melody tone expander and output from the speaker 11. That is, in the home information board master unit 1A and the housing information panel sub-base unit 1B, the lobby intercom 60, the alarm monitoring panel 80, and the extension call from the same dwelling unit are detected by the transmission signal, and the call from the intercom subunit 50 is performed. Is detected by the call detection unit 7,
In the main control unit 2, the housing information board sub-base unit 1B (or the housing information board base unit 1A), the intercom subunit 50, the lobby intercom 6
0, the call from the alarm monitoring board 80 can be individually recognized. However, when an extension call is made between the home information board master unit 1A and the house information panel sub-base unit 1B in the same dwelling unit, a direct call signal is sent and received between the two without using the alarm monitoring panel 80 as described above. It may be done.

The home information board master unit 1A of the present embodiment
Then, among the plurality of types of ringing tones generated by the ringing tone generator by operating the operation unit 3, and among the melody sounds (ringing tones) obtained by expanding the plurality of types of melody sound data by the melody tone decompressor. From this, any ringing tone can be selected according to the calling source. Data indicating the ringing tone selected in advance for each calling source is stored in the storage unit 4, and when the calling is detected, the storage unit is stored. By referring to the data stored in 4, the ringing tone corresponding to the calling source is output from the voice generation unit 18. Therefore, it is possible to output a ringing sound according to the preference of the resident from the speaker 11, and the calling source is the home information board sub-base unit 1B (or the home information board base unit 1A) and the intercom subunit 5.
0, the lobby intercom 60, or the alarm monitoring panel 80 can be easily discriminated from the ringing tone.

In the main control unit 2 of the home information board master unit 1A, the calling source is the intercom subunit 50 or the sub-base unit 1 of the home information board.
If it is B, the call switching unit 34 is controlled to control the input / output terminal T.
a1 is switched to the terminal Ta2, and the voice generation unit 18
Call line Lc with the ring back tone output from
When the calling source is the lobby intercom 60 or the alarm monitoring panel 80, the call switching unit 34 is controlled to set the input / output terminal Ta1 to the terminal Ta3. The lobby intercom 60 or the alarm monitoring panel 8 is switched via the communication line La with the ringing sound output from the voice generation unit 18 as a back tone when switched.
Send to 0. In this way, the back tone having the same sound as the ringing tone on the dwelling unit side can be transmitted to the lobby intercom 60, the intercom subunit 50, etc. of the calling source. However, the same back tone may be sent to all calling sources, and by doing so, the same back tone is sent to any calling source, which gives a unified feeling to the calling operation. There is an advantage that it can be done. Furthermore, by providing a back tone generation unit in the voice generation unit 18 separately from the ring tone generation unit, it is possible to generate a back tone according to the preference of the resident and send it to the calling source.

Here, the main control unit 2 of the home information board master unit 1A and the sub-base unit 1B of the housing information board gives a display control signal to the video display unit 14 when a call is detected and responds to the call source. The display is displayed on the screen of the monitor unit 13 so that the caller can be easily identified from the display content displayed on the screen of the monitor unit 13.

(Second Embodiment) FIG. 6 is a block diagram showing a main configuration of a home information board master device 1A according to the present embodiment. The home information board master unit 1A according to the present embodiment sends a response message prepared in advance to the caller when there is a call from the intercom subunit 50, the lobby intercom 60, or the alarm monitoring panel 80 when absent, and the caller Visitor image (video signal) sent from the intercom subunit 50
And an answering machine operation mode for recording a visitor's message (audio signal), and a video memory section 43 for recording a video signal.

When an answering machine setting button (not shown) provided on the operation unit 3 is pressed, the operation mode of the main control unit 2 becomes the answering machine operation mode. When a call signal from the intercom subunit 50 is detected in this answering machine operation mode, a prepared response message (for example, "I am out of office. Please leave a message.") Is expanded by the voice message expansion unit. The video signal sent from the intercom child device 50 or the like is compressed as a digital signal and recorded in the video memory unit 43, and the message (voice The signal) is compressed by a voice compression unit (not shown) provided in the simultaneous call processing unit 17 and stored in the memory. When the video or message of the visitor is recorded in the answering machine operation mode, the main control unit 2 lights up or blinks a not-shown indicator light or displays it on the monitor unit 13 so that the visitor can display the message during the absence. Notify the residents of what is left.

Then, when the play button (not shown) provided on the operation unit 3 is pressed by the resident who has returned home, the main control unit 2 displays the video signal recorded in the video memory unit 43 on the video display unit 14. Signal processing is performed and displayed on the monitor unit 13, and at the same time, the visitor message stored in the memory is expanded by a voice expansion unit (not shown) provided in the simultaneous call processing unit 17 and output from the speaker 11. It is possible to check the visitor's requirements by displaying the visitor's image on the monitor 13 at the same time as making the residents hear the message left by the visitor.

The response message sent to the caller in the answering machine operation mode may have different contents depending on the caller. That is, the response message when there is a call from the intercom subunit 50 and the response message when there is a call from the lobby intercom 60 or the alarm monitoring panel 80 are compressed and stored in the memory, and the call is made in the main control unit 2. The response message corresponding to the original may be output from the voice generation unit 18.

(Embodiment 3) FIG. 7 is a block diagram showing a main configuration of a home information board master unit 1A (also the home information board sub master unit 1B) in the present embodiment. The present embodiment is characterized in that a matching circuit section 44 as an impedance adjusting means is provided on the terminal Ta1 side of the call switching section 34 of the housing information board master unit 1A and the housing information board sub master unit 1B.

That is, in an apartment house such as a condominium to which the house information board system of the present invention is applied,
The wiring length of the information trunk line L1 (communication line La and control line Lb) reaches several hundred meters to several kilometers, and the wiring length of the communication line Lc (several tens of meters) between the home information board master unit 1A and the intercom subunit 50. ), The impedance when looking at the intercom subunit 50 from the home information board base unit 1A and the alarm monitoring panel 80 (and the lobby intercom 60) from the home information board base unit 1A There is a possibility that the difference in impedance at this time becomes large, and the volume during a call with the alarm monitoring panel 80 (or the lobby intercom 60) may decrease.

On the other hand, in the present embodiment, the matching circuit section 44 is provided on the terminal Ta1 side of the call switching section 34, and the impedance when the intercom sub-unit 50 is seen from the home information board master unit 1A is provided by this matching circuit 44. Since the adjustment is made to reduce the impedance difference when the alarm monitoring board 80 (and the lobby intercom 60) is viewed from the home information board base unit 1A, the home information board base unit 1A (or the home information board sub base unit 1B). ) And the intercom subunit 50, the lobby intercom 60, or the alarm monitoring panel 80, the quality of communication can be improved. The matching circuit 44 that adjusts the impedance is well known in the art, and thus detailed description thereof is omitted.

By the way, instead of providing the matching circuit 44, a variable capacitance type capacitor (not shown) as an impedance adjusting means is inserted in the communication line Lc for connecting the intercom subunit 50, and the capacitance of this capacitor is adjusted. Impedance when the intercom subunit 50 is seen from the home information board base unit 1A and the alarm monitoring panel 8 from the home information board base unit 1A
The same effect can be obtained by reducing the difference in impedance when 0 (and the lobby intercom 60) is seen.

An amplifier (not shown) as a transmission / reception gain adjusting means is provided on the terminal Ta3 side of the call switching section 34 of the home information board master unit 1A and the house information panel sub-base unit 1B, and the home information board master unit 1A. In addition, when a call is made between the sub-base unit 1B of the house information board and the lobby intercom 60 or the alarm monitoring board 80, the main control unit 2 sets the gain of the amplifier to the device of the other party (the lobby intercom 60 or the alarm monitoring board 80). ), If the structure is variably controlled to a value suitable for
In addition, housing information board sub-base unit 1B and lobby intercom 60
In addition, when making a call with the alarm monitoring board 80, the call can be made at an appropriate volume.

[0073]

According to the invention of claim 1, the lobby intercom installed at the common entrance of the apartment, the intercom subunit installed outside each dwelling unit, and the indoor intercom installed in each dwelling unit threaten the safety of the dwellers. Between one or more types of safety devices that automatically or manually output a signal to notify the occurrence of an abnormality in the event of an accident, a lobby intercom installed in each dwelling unit, and a doorphone subunit installed outside the dwelling unit. A home information board master that monitors the output of each safety device installed in the house while forming a call path to the home information board and a home information board master installed in the dwelling unit and connected to the home information board master It is installed in the management room, etc. of the housing information board, which is a sub-master unit for making calls by forming a communication path between the lobby intercom and the intercom subunit installed outside the house through the master unit. Robi by signal line It is equipped with an intercom and an alarm monitoring panel that is connected to each home information board base unit and forms a call path with the lobby intercom, the home information board base unit, and the sub-base unit of the home information board to make a call. When a signal indicating the occurrence of an abnormality is output from any of the safety devices, the master unit generates an alarm sound or an alarm message according to at least the occurrence of the abnormality and the type of the abnormality that occurred, and notifies the resident in the house of the signal. In a home information panel system that informs the alarm monitoring panel via a line, a simultaneous loud call can be performed through a communication path formed between a microphone and a speaker and an intercom subunit or an alarm monitoring panel via the microphone and the speaker. Simultaneous call processing means to perform,
A call path that forms a call path between the emergency call detection unit that detects an emergency call from the alarm monitoring panel and the emergency call detection panel when the emergency call from the alarm monitoring panel is detected by the emergency call detection unit. Since the housing information board base unit is equipped with the forming means,
The home information board master unit enables simultaneous loud calls and is sent by forcibly forming a call path between the home information board master unit and the alarm monitoring panel by the call forming means for an emergency call from the alarm monitoring panel. It is possible to talk to a resident between the alarm monitoring panel and the resident by using the voice call function of the home information board base unit without the need for the resident's response operation such as picking up the handset. The effect is that you can contact the residents and take appropriate measures.

The invention of claim 2 is characterized in that, in the invention of claim 1, the alarm monitoring board is provided with an individual calling means for individually calling the housing information board master unit and the housing information board sub-master unit of each dwelling unit. , You can call the home information board master unit of each dwelling unit and the house information board sub-master unit individually from the alarm monitoring panel,
When an abnormality occurs in a dwelling unit, it is possible to immediately contact the resident and take appropriate action.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the alarm monitoring panel is provided with a simultaneous emergency calling means for making an emergency call to the home information panel master unit and the sub-master unit of the housing information panel simultaneously. Therefore, when an abnormality occurs in the dwelling unit, there is an effect that the dweller can be contacted promptly and surely and appropriate action can be taken.

The invention of claim 4 relates to claim 1 or 2 or 3.
In the invention of claim 1, a microphone and a speaker, a simultaneous call processing means for making a loud simultaneous call through the microphone and the speaker, and an emergency call detecting means for detecting an emergency call from the alarm monitoring panel via the home information board master unit, When the emergency call detection means detects an emergency call from the alarm monitoring panel, the home information panel is connected to the home information panel by means of a call path forming means for forcibly forming a call path with the alarm monitoring panel via the master unit. Since it is installed in the base unit, the home information board base unit and the home information board sub-base unit are usually installed in different locations in the dwelling unit, so even if the resident is not near the home information board base unit, the home information There is a high possibility that you will be able to talk to a resident through a communication path that is forcibly formed with the board sub-master unit, and if an abnormality occurs in the dwelling unit, you will promptly and reliably contact the resident and take appropriate action I can take There is an effect.

According to a fifth aspect of the invention, in the invention of the fourth aspect, the level of the transmission signal picked up by the microphone when the call is compulsorily formed by the communication path forming means is raised more than in the steady state. A place where the resident of the dwelling unit where the abnormality occurs is away from the home information board master unit and the sub board Even in the situation where the user is in the room or can only make a small voice, the level of the transmission signal is increased by the transmission signal level changing means, and the effect that the resident's voice can be heard on the alarm monitoring panel side is obtained.

According to the invention of claim 6, in the invention of claim 4, an alarm generating means for generating an alarm sound or an alarm message, and an alarm output means for outputting the alarm sound or the alarm message generated by the alarm generating means from a speaker. And a warning output control means for controlling the warning output means to reduce the level of the warning sound or the warning message output from the speaker when the talk path is forcibly formed by the talk path forming means. Since it is equipped with the machine and the home information board sub-master, alarm sounds and messages are heard in the dwelling unit where an abnormality occurs, but by reducing these levels with the alarm output control means There is an effect that it does not hinder the call.

According to a seventh aspect of the invention, in any one of the first to fourth aspects of the invention, when any one of the safety devices outputs a signal informing of the occurrence of an abnormality, the type of the safety device that outputs the signal is displayed. Since the home information board master unit is provided with the display means, there is an effect that the resident can be surely and easily informed what kind of abnormality has occurred.

According to an eighth aspect of the present invention, in any one of the first to fourth aspects of the present invention, there is provided a call detecting means for individually detecting a call from the lobby intercom, the intercom subunit or the alarm monitoring panel, and the call detecting means. A ringing tone generating means for generating a ringing tone corresponding to a calling source when a call is detected, and a ringing tone outputting means for outputting a ringing tone generated by the ringing tone generating means from a speaker. Since it is equipped with the sub-master unit, it can output the ringing tone according to the resident's preference from the speaker, and it is easy to determine from the ringing tone whether the calling source is the lobby intercom, the intercom subunit or the alarm monitoring panel. The effect is that it can be determined.

According to the ninth aspect of the present invention, in the eighth aspect of the present invention, the back tone transmitting means for transmitting the back tone to the calling source is provided in the home information board master unit and the sub-base station of the home information panel. By sending the same back tone to any calling source of the intercom, the intercom subunit, or the alarm monitoring panel, it is possible to give a unified feeling to the calling operation.

According to a tenth aspect of the invention, in the invention of the ninth aspect, since the back tone transmitting means transmits the ringing tone generated by the ringing tone generating means as the back tone, the same tone as the ringing tone on the dwelling unit side is output. There is an effect that the back tone can be transmitted to the lobby intercom of the calling source, the intercom subunit, or the alarm monitoring panel.

According to the invention of claim 11, in the invention of claim 9, the back tone generating means for generating the back tone is provided in the house information board master unit and the house information board sub-master unit. There is an effect that the back tone can be transmitted to the lobby intercom, the intercom subunit, or the alarm monitoring panel, which is the calling source.

According to a twelfth aspect of the present invention, in any one of the first to fourth aspects of the present invention, there is provided a call detecting means for individually detecting a call from the lobby intercom, the intercom subunit or the alarm monitoring panel, and the call detecting means. Since the housing information board master unit and the housing information board sub-master unit are equipped with a call display means for displaying a call according to the calling source when a call is detected, the calling source is a lobby intercom, an intercom subunit or an alarm monitoring panel. There is an effect that it can be easily discriminated from the display of the calling means.

According to a thirteenth aspect of the present invention, in the first aspect of the present invention, the lobby intercom includes image pickup means for picking up an image of a visitor and video signal transmission means for transmitting a video signal output from the image pickup means to the home information board master unit. And video display means for displaying an image, which is provided in at least one of the intercom subunits, and video signal processing means for processing the video signals transmitted from the lobby intercom or intercom subunits and displaying them on the video display means. Since the housing information board master unit is equipped with a recording means for recording the video signal transmitted from the lobby intercom or the intercom subunit, and the received voice from the lobby intercom or the intercom subunit, the visitor who visited during the absence Video and voice (message) of the person are recorded in the recording means, and after returning home, the video signal and the reception signal recorded in the recording means are reproduced and the requirements of the visitor. There is an effect that can be ascertained.

According to a fourteenth aspect of the present invention, in the thirteenth aspect of the present invention, the home information board master unit is provided with video signal output means for signal-processing the video signal transmitted from the lobby intercom or doorphone subunit and outputting the signal to the outside. Therefore, for example, by displaying the image of the visitor on a screen of a television, a personal computer, or the like, there is an effect that the image can be displayed in an easy-to-see manner.

According to a fifteenth aspect of the present invention, in any one of the first to fourth aspects of the present invention, there is provided a call detecting means for individually detecting a call from the lobby intercom, the intercom subunit or the alarm monitoring panel, and the call detecting means. A residence information board master unit and a residence, which include a response message generation unit that generates a response message according to a calling source when a call is detected, and a response message transmission unit that transmits the response message generated by the response message generation unit to the calling source. Since the information board sub-base unit is provided, there is an effect that the response message returned to the caller when the resident is absent can be changed to a different content for each caller.

According to a sixteenth aspect of the present invention, in any one of the first to fourth aspects of the present invention, a dedicated line is connected to the housing information board master unit and the housing information board sub-master unit of each dwelling unit, and each is connected via a dedicated line. The housing information board master unit and the housing information board sub-master unit are equipped with broadcasting equipment that broadcasts an alarm sound or a warning message to the housing information board master unit and the housing information board sub-master unit at the same time. Since it is installed in a different place, even if the resident is not near the housing information board master unit, the housing information board sub-base unit increases the possibility that the resident will listen to the broadcast, which will improve safety. is there.

According to a seventeenth aspect of the present invention, in any one of the first to fourth aspects of the invention, the apparent impedance of each communication path formed between the lobby intercom, the intercom sub-unit, and each device of the alarm monitoring panel. Since it has impedance adjustment means that makes it almost the same, the impedance when looking at the intercom subunit from the home information board master unit and the impedance when looking at the alarm monitoring panel or lobby intercom from the home information board master unit are adjusted to be approximately the same. By doing so, there is an effect that it is possible to improve the call quality between the home information board master device or the home information board sub-master device and each device.

According to an eighteenth aspect of the invention, in any one of the first to fourth aspects of the invention, the transmission / reception gain of each communication path formed between the lobby intercom and each device of the alarm monitoring panel is individually adjusted. When making a call between the housing information board master unit and the housing information board sub-master unit, and the lobby intercom and the alarm monitoring panel, the transmission / reception gain adjustment means is installed in the housing information board master unit and the housing information board sub-master unit. There is an effect that a call can be made at an appropriate volume.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a home information board master unit and a doorphone subunit according to a first embodiment.

FIG. 2 is a system configuration diagram of the above.

FIG. 3 is a block diagram showing a configuration of a lobby intercom and an alarm monitoring panel in the above.

FIG. 4 is a block diagram showing a configuration of a sub-base unit for a home information panel in the above.

FIG. 5 is a block diagram showing a configuration of a simultaneous call processing unit of the home information board master unit and the home information board sub-base unit in the above.

FIG. 6 is a block diagram showing a configuration of a main part of a home information board master unit in the above.

FIG. 7 is a block diagram showing a configuration of a main part of the home information board master device in the above.

FIG. 8 is a system configuration diagram of a conventional home information board system.

[Explanation of symbols]

1A Housing information board base unit 1B Housing Information Board Deputy Master Unit 2 Main control unit 5 Transmission / reception unit 34 Call switching unit 50 Doorphone subunit 60 Lobby intercom 80 alarm monitoring panel La communication line Lb control line Lc call line

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Minoru Fukushima             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Akira Terasawa             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F-term (reference) 5C054 AA02 CA04 CC02 CD06 CE14                       CH02 DA08 EA03 HA22                 5C087 AA02 AA03 AA10 AA24 AA25                       AA40 AA42 BB03 BB32 BB34                       BB46 BB62 BB63 BB64 BB65                       BB74 BB75 DD03 DD26 DD36                       EE07 EE16 FF01 FF02 FF04                       FF05 FF19 FF24 GG12 GG18                       GG32 GG55 GG57 GG67 GG79                 5K038 AA06 CC12 DD12 DD16 FF01                       GG01 GG02                 5K101 KK14 LL04 NN01 NN12 NN17

Claims (18)

[Claims] 1. A lobby intercom installed at a common entrance of an apartment complex, an intercom subunit installed outside each dwelling unit, and automatically or manually installed in each dwelling unit when the safety of residents is threatened. A communication path is formed between one or more types of safety devices that output a signal to notify the occurrence of an abnormality at the lobby intercom installed in each dwelling unit and the intercom subunit installed outside the house. A home information board master unit that makes calls and monitors the output of each safety device installed in the house, and a home information board master unit that is installed in the dwelling unit and connected to the home information board master unit, and the lobby via the home information board master unit An intercom and a sub-base unit of the housing information panel that forms a communication path with the intercom sub-unit installed outside the house and makes a call, and a lobby intercom and a signal line installed in the management room of the housing complex. The home information board parent is equipped with an alarm monitoring panel that is connected to each home information board parent machine and forms a call path with the lobby intercom, the home information board parent machine, and the house information board sub-master When any of the safety devices outputs a signal notifying that an abnormality has occurred, the aircraft will generate an alarm sound or message at least in accordance with the occurrence of the abnormality and the type of the abnormality that occurred, and notify the resident of the house of the signal line. In the housing information board system that informs the alarm monitoring board via the microphone and the speaker,
Simultaneous call processing means for making a simultaneous voice call through a communication path formed between a doorphone subunit or an alarm monitoring board via a microphone and a speaker, and an emergency call detecting means for detecting an emergency call from the alarm monitoring board, The home information board base unit is provided with a call path forming means for forcibly forming a call path with the alarm monitoring board when the emergency call detecting means detects an emergency call from the alarm monitoring board. Housing information board system to do. 2. The house information board system according to claim 1, wherein the alarm monitoring board is provided with an individual calling means for individually calling the house information board master unit and the house information board sub-master unit of each dwelling unit. 3. The house according to claim 1, wherein the alarm monitoring panel is provided with a simultaneous emergency call means for making an emergency call to the home information board master unit and the sub-base unit of the housing information panel at the same time. Information board system. 4. A microphone and a speaker, a simultaneous call processing means for making a simultaneous loud call through the microphone and the speaker, and an emergency call detecting means for detecting an emergency call from an alarm monitoring board via the home information board master. A housing information board and a communication path forming means for forcibly forming a communication path with the alarm monitoring board through the master unit when an emergency call from the alarm monitoring board is detected by the emergency call detecting means. The housing information board system according to claim 1, wherein the housing information board system is provided in the sub-master. 5. A transmission signal level varying means for raising the level of a transmission signal picked up by a microphone when a call is compulsorily formed by the communication path forming means compared with a steady state is provided as a housing information board parent. 5. The housing information board system according to claim 4, wherein the housing information board system and the sub-base machine of the housing information board are provided. 6. An alarm generation means for generating an alarm sound or an alarm message, an alarm output means for outputting an alarm sound or an alarm message generated by the alarm generation means from a speaker, and a call channel formation means forcibly making a call. When the road is formed, the housing information board master unit and the housing information board sub-master unit are provided with an alarm output control unit that controls the alarm output unit to reduce the level of the alarm sound or the alarm message output from the speaker. The housing information board system according to claim 4, wherein: 7. The home information board master unit is provided with display means for displaying the type of the safety device that has output the signal when any one of the safety devices outputs a signal informing of the occurrence of an abnormality. Item 1. The housing information board system according to any one of items 1 to 4. 8. A call detecting means for individually detecting a call from a lobby intercom, an intercom subunit or an alarm monitoring panel, and a call for generating a ringing tone according to a caller when the call detecting means detects a call. 5. The housing information board master unit and the housing information board sub-master unit are provided with sound generation means and ringing sound output means for outputting the ringing sound generated by the ringing sound generation means from a speaker. The housing information board system according to any one of 1. 9. The housing information board system according to claim 8, wherein the housing information board master unit and the housing information board sub-master unit are provided with a backtone sending means for sending a backtone to the calling source. 10. The house information board system according to claim 9, wherein the back tone transmitting means transmits the ringing tone generated by the ringing tone generating means as a back tone. 11. The house information board system according to claim 9, wherein the house information board master unit and the house information board sub-master unit are provided with a backtone generating means for generating a backtone. 12. A call detecting means for individually detecting a call from a lobby intercom, an intercom subunit or an alarm monitoring panel, and a call display means for displaying a call according to a call source when the call detecting means detects a call. 2. The housing information board master and the housing information board sub-master are equipped with and.
The housing information board system according to any one of 4 to 4. 13. An image pickup means for picking up an image of a visitor and a video signal transmission means for transmitting a video signal output from the image pickup means to a home information board master unit are provided in at least one of a lobby intercom and an intercom subunit. , Video display means for displaying video, video signal processing means for processing the video signal transmitted from the lobby intercom or intercom subunit and displaying it on the video display means, video transmitted from the lobby intercom or intercom subunit 2. The house information board system according to claim 1, further comprising a recording means for recording a signal and a voice received from a lobby intercom or an intercom subunit. 14. The house according to claim 13, wherein the house information board base unit is provided with a video signal output means for processing a video signal transmitted from the lobby intercom or the intercom subunit to output the signal to the outside. Information board system. 15. A call detection means for individually detecting a call from a lobby intercom, an intercom subunit or an alarm monitoring panel, and a response for generating a response message according to a call source when the call detection means detects a call. The housing information board master unit and the housing information board sub-master unit are provided with a message generation unit and a response message transmission unit that transmits the response message generated by the response message generation unit to a calling source. The housing information board system according to any one of 4 above. 16. A dedicated line is connected to the housing information board master unit and the housing information board sub-master unit of each dwelling unit, and is simultaneously sent to the housing information board master unit and the housing information board sub-master unit of each dwelling unit via a dedicated line. The housing information board system according to any one of claims 1 to 4, further comprising broadcasting equipment for broadcasting an alarm sound or an alarm message. 17. An impedance adjusting means for making the apparent impedances of the respective communication paths formed between the lobby intercom, the intercom sub-unit, and the devices of the alarm monitoring panel substantially the same. Item 1. The housing information board system according to any one of items 1 to 4. 18. A reception / transmission gain adjusting means for individually adjusting transmission / reception gain of each communication path formed between the lobby intercom and each device of the alarm monitoring panel, the housing information board master unit and the housing information board sub-master. The housing information board system according to any one of claims 1 to 4, which is provided in a machine.