JP4622657B2 - Intercom system for housing complex - Google Patents

Description

  The present invention is an assembly that enables communication by alternatively establishing a communication path between a common unit device installed at a common entrance of an apartment house and any one of the dwelling units installed in each dwelling unit. Concerning residential intercom systems, in particular, in addition to individual calls that use a common unit device and a single dwelling unit, calls using a doorphone slave unit and a dwelling unit installed at the entrance of a dwelling unit, and common areas of a dwelling unit The present invention relates to an intercom system for collective housing that can broadcast audio to a plurality of dwelling units at the same time by a simultaneous broadcasting device installed in a manager room or the like.

Conventionally, a common unit (lobby intercom) installed at the common entrance of an apartment house and capable of voice input and output, and a common unit installed at each dwelling unit of an apartment house are connected via a transmission line and shared. A plurality of dwelling units (such as an interphone master unit and a housing information panel) that establish communication paths with the shared unit device when a visitor selects a selection means (such as a numeric keypad) that the unit device has. A doorphone handset installed in each dwelling unit of a housing complex and connected via a cordless handset connection line to a dwelling unit, and transmitted to each dwelling unit installed in a common area or a manager's room of a housing complex There is provided an intercom system for collective housing provided with a simultaneous broadcasting device that is connected via a track and broadcasts audio to all or some of the dwelling units at once (for example, see Patent Document 1). .
JP-A-6-14125

  By the way, when a broadcast is started during a call with a doorphone slave, or when a call is received from the doorphone slave while receiving a broadcast, the broadcast is an urgent content such as an evacuation broadcast in the event of a disaster. If there is a priority, broadcast should be given priority and no calls should be made between the dwelling unit and the intercom. However, it is preferable for residents to give priority to broadcasts unconditionally if broadcasts are not urgent matters. Absent.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an intercom system for a collective housing in which a resident can select which of a telephone conversation with a door phone and a broadcast is prioritized. is there.

In order to achieve the above object, the first aspect of the present invention provides a common unit device installed at a common entrance of a housing complex and capable of inputting / outputting sound, and a common unit device installed at each dwelling unit of the housing complex. A plurality of dwelling units that establish a communication path with the shared unit when connected by a visitor and are selected by a visitor operating the selection means that the shared unit has A door phone slave unit installed in each dwelling unit and connected to the dwelling unit via a cordless handset connection line and transmitting a call signal to the dwelling unit via the cordless handset connection line; A broadcasting device installed in the manager's room and connected to each dwelling unit via a transmission line and simultaneously broadcasting audio to some or all dwelling units, wherein the transmission line is at least a selection means Occurs with the operation of It consists of a control line for transmitting a control signal for instructing the start of another call and a signal line for transmitting a voice signal. The dwelling unit has a signal line and a slave unit connection line between the common unit and the door phone cord. Calling means for making a call via a telephone, a speaker for sounding at least broadcast sound, and an individual call / broadcast switching means for selectively switching between a state in which a signal line is connected to the calling means and a state in which the signal line is connected to the speaker Based on the control signal transmitted via the control line, the communication path switching means for selectively switching the state where the call means is connected to the individual call / broadcast switching means and the state where the call means is connected to the handset connection line. and control means for controlling the individual call / broadcast broadcast switching means and call switching means Te, and the call / broadcast broadcast selection means any call and simultaneously broadcast to select whether to prioritize the intercom slave unit is sounded by the speaker Includes a sound volume correcting means for correcting the volume of simultaneous broadcasting of audio, and recording means for recording the voice of the simultaneous broadcasting, a reproducing means for sending from the speaker reproduces the sound of the simultaneous broadcast is recorded in the recording means, each When the control unit of the dwelling unit receives a control signal instructing the start of simultaneous broadcasting, it controls the communication path switching unit and connects the communication unit to the individual call / multi-broadcast switching unit if the call is not in progress with the door phone slave unit. And switching to a state where the individual call / broadcast switching means is controlled to switch to a state where the signal line is connected to the speaker. If a call is being made with the doorphone slave unit, the broadcast / broadcast selection means selects the broadcast. In this case, the call path switching means is controlled to switch the call means to a state where it is connected to the individual call / broadcast switching means, and the individual call / broadcast switching means is controlled to connect the signal line to the speaker. When the call signal is received from the intercom handset, if the broadcast is not being received, the call path switching means is controlled so that the call means is connected to the slave connection line. If a call is selected by the call / broadcast selection means if the call is being received, the call path switching means is controlled to switch to a state in which the call means is connected to the slave unit connection line, and further, the call / broadcast selection means is used. There when selected, characterized Rukoto to record the voice of simultaneous broadcasting corrected by the volume correction means for recording means.

The invention of claim 2 is the invention of claim 1 , wherein the sound installed in each dwelling unit and connected to the dwelling unit of the dwelling unit through the transmission line and broadcast by the simultaneous broadcasting device is transmitted from the dwelling unit to the transmission line. And a sound device that outputs the broadcast broadcast sound transmitted through the transmission line, and the control unit of the dwelling unit transmits the broadcast broadcast sound when the call is selected by the call / broadcast selection means. It transmits to an audio equipment via this.

According to a third aspect of the present invention, in the first aspect of the invention, the dwelling unit is provided with a notification sound generating means for generating a notification sound, and the control means of the dwelling unit is selected as a broadcast / broadcast selection means. In this case, the notification sound generated by the notification sound generation means is transmitted to the door phone slave unit via the slave unit connection line.

According to a fourth aspect of the present invention, in the first aspect of the invention, the door phone sub-unit includes an imaging unit that images a visitor, and a video transmission unit that transmits an image captured by the imaging unit to the dwelling unit. And a display means for displaying the video transmitted from the door phone slave unit, and the control means of the dwelling unit displays the video transmitted from the door phone slave unit when the broadcast / broadcast selection means is selected. It is characterized by being displayed.

According to the first aspect of the present invention, when a broadcast is started during a call with a door phone slave, the resident can select whether to continue the call with the door phone slave or to switch to receiving a broadcast. Furthermore, it is possible to reproduce and confirm the broadcast recorded on the recording means after the call with the door phone slave unit is completed.

According to the second aspect of the present invention, when a broadcast is started during a call with the door phone slave unit, or when a call is received from the door phone slave unit during reception of the broadcast, the resident calls / broadcasts. When a call is selected by the selection means, the control means of the dwelling unit transmits the broadcast sound to the acoustic device via the transmission line, so that the broadcast can be heard by the acoustic device while talking to the door phone slave unit.

According to the third aspect of the present invention, when a broadcast is started during a call with the door phone slave unit, or when a call is received from the door phone slave unit while receiving the broadcast, the resident calls / broadcasts. When the broadcast is selected by the selection means, the control means of the dwelling unit transmits the notification sound generated by the notification sound generation means to the door phone slave unit via the slave unit connection line. The user can be notified that the call has been interrupted in order to receive the broadcast.

According to the fourth aspect of the present invention, when a broadcast is started during a call with the door phone slave unit, or when a call is received from the door phone slave unit while receiving the broadcast, the resident calls / broadcasts. When the broadcast is selected by the selection means, the control means of the dwelling unit displays the video transmitted from the door phone slave unit on the display means, so that the state of the visitor can be confirmed with the video while receiving the broadcast. .

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Before describing an embodiment of the present invention, a reference example having the same basic configuration as the embodiment of the present invention will be described.
A system configuration example of this reference example is shown in FIG. In this reference example , a common unit device (lobby intercom) 1 installed at a common entrance of an apartment house and a plurality of dwelling units 2 installed in each dwelling unit are provided. It is connected via a transmission line. The transmission line includes a trunk line L1 connected to the lobby intercom 1 and a branch line L2 connected to each dwelling unit 2. Further, the trunk line control device for distributing the trunk line L1 to a plurality of systems (not shown). 3 is provided. As this transmission line, a multi-pair twisted pair cable having three or more pairs in the sheath is used. In the illustrated example, a communication line La that transmits an audio signal between the lobby intercom 1 and the dwelling unit 2; A video line Lb for transmitting a video signal captured by a television camera (not shown) provided in the lobby intercom 1 and a control signal for designating the dwelling unit 2 selected by the selection means (described later) of the lobby intercom 1 A pair line is used for each of the control lines Lc for transmitting. That is, the transmission line of the illustrated example uses three pairs of pair wires. Here, the video signal transmitted through the video line Lb is frequency-modulated by the lobby intercom 1 and is demodulated by the video processing unit 12 provided in each dwelling unit 2 and displayed on the monitor unit 13 as will be described later. .

  Although not shown, the lobby intercom 1 includes a microphone and a speaker for inputting / outputting sound, a TV camera for imaging a visitor, a selection key having a number key for designating a dwelling unit number and a call button, and When the caller is operated after the person operates the number key to select the visited unit number, the dwell unit 2 corresponding to the unit number is selected. Here, a simultaneous broadcasting device (alarm monitoring panel) 5 is connected to the lobby intercom 1 via the communication line La and the control line Lc, and the dwelling unit number selected on the lobby intercom 1 is alerted via the control line Lc. When transmitted to the monitoring board 5, the alarm monitoring board 5 sends a control signal (call command) to the dwelling unit 2 corresponding to the dwelling unit number via the control line Lc.

  On the other hand, the dwelling unit 2 includes a microphone 21 and a speaker 22 that input and output audio, and the microphone 21 and the speaker 22 are connected to the call processing unit 24 via amplifiers 23a and 23b, respectively. Also connected to the call processing unit 24 is a two-wire / four-wire conversion unit 25 for converting the transmission paths on the reception side and the transmission side and the two-line communication line La into two-wire / four-wires through amplifiers 26a and 26b. ing. The call processing unit 24 compares the level of the voice signal (received signal) transmitted via the call line La and the level of the voice signal (transmitted signal) output from the microphone 21 to compare the call state (received state or transmitted state). When a call state is estimated, a loss is inserted into the transmission path of the transmission signal, and when a transmission state is estimated, a loss is inserted into the transmission path of the reception signal. And an echo canceler for eliminating acoustic echo generated by acoustic coupling between the microphone 21 and the speaker 22. However, since such voice switches and echo cancellers are well known in the art, detailed illustration and description of the configuration and operation are omitted. Therefore, an audio signal can be exchanged between the lobby intercom 1 and the dwelling unit 2 through the communication line La. A visitor uses the lobby intercom 1 and a resident uses the dwelling unit 2 so that the visitor and the residence Voice calls can be made with a person.

  Further, in the dwelling unit 2, the communication line La and the video line Lb of the branch line L2 are respectively connected to a transmission path (hereinafter referred to as “call path”) and a video signal transmission path. (Hereinafter referred to as “video path”) A main line interface unit 14 is provided. The video path is connected to the video processing unit 12, and the call path is connected to the call / broadcast switching unit 15. The call / broadcast switching unit 15 selectively switches between a state where the speech path connected to the trunk interface unit 14 is connected to the speech path switching unit 16 and a state where the speech path is connected to a volume correction unit 30 which will be described later. It is. Further, the communication path switching unit 16 is the same as the state in which the communication path connected to the two-wire / four-line conversion unit 25 is connected to the telephone / broadcast switching unit 15 and the state in which the communication path is connected to the handset interface unit 18 described later. It selectively switches between a state of connection to another dwelling unit (not shown) installed in the dwelling unit.

  The door phone slave unit 6 is connected to the slave unit interface unit 18 connected to the speech path switching unit 16 via the slave unit connection line L3. The door phone sub-unit 6 is disposed at the entrance of each dwelling unit of the apartment house and includes a microphone and a speaker. Therefore, when the speech path switching unit 16 is switched to a state in which the speech path connected to the 2-wire 4-wire conversion unit 25 is connected to the slave unit interface unit 18, between the doorphone slave unit 6 and the dwelling unit 2. Is possible. Further, the door phone slave unit 6 is provided with a television camera, and the slave unit interface unit 18 separates the audio signal and the video signal transmitted via the slave unit connection line L3, and the separated video signal is transmitted via the transmission line. It can be output to the video processing unit 12 and displayed on the monitor unit 13. Furthermore, the door phone sub unit 6 is provided with a call button, and has a function of sending a call signal to the sub unit connection line L3 when the call button is operated, and the dwell unit 2 has a notification sound when the call signal is detected. The ringing tone generated by the generation unit 27 is transmitted from the speaker 22. The operating power (DC power supply) of the door phone slave unit 6 is supplied from the dwelling unit 2 via the two-wire slave unit connection line L3. In the door phone slave unit 6, the cord of the slave unit connection line L3 is supplied. A ringing signal is transmitted by changing the voltage between the terminals.

  In the dwelling unit 2, a liquid crystal display or a CRT is used for the monitor unit 13. The video signal input to the dwelling unit 2 through the video line Lb is balanced-unbalanced converted by the main line interface unit 14, further amplified by an amplifier, and then frequency demodulated by the video processing unit 12. The video signal input to the dwelling unit 2 through the slave unit connection line L3 is also balanced-unbalanced converted by the slave unit interface unit 18, further amplified by an amplifier, and then frequency-demodulated by the video processing unit 12. The video signal output from the video processing unit 12 is input to the monitor unit 13, thereby displaying a video on the screen of the monitor unit 13. That is, since the image of the visitor imaged in the TV camera of the lobby intercom 1 or the door phone slave unit 6 is displayed on the monitor unit 13 of the dwelling unit 2, the resident in the dwelling unit can confirm the visitor. is there.

  In addition, the notification sound generation unit 27 generates a notification sound for notification of a call from the lobby intercom 1 or the door phone slave unit 6 and outputs the generated notification sound to the speaker 5 via the amplifier 28a and the notification sound. Is output as a back tone to the branch line L2 or the slave unit connection line L3. That is, the back tone transmission path switching section 17 is connected to the notification sound generation section 27 via the amplifier 28b, and the back tone transmission path switching section 17 selects the back tone transmission destination as the branch line L2 and the slave unit connection line. Alternatively, it is switched to L3.

  The dwelling unit 2 is provided with a main control unit 10 that controls the internal circuit with a CPU as a main component. The main control unit 10 includes a control signal transmission / reception circuit 11 serving as an interface with the control line Lc, and a call button (see FIG. (Not shown) or the like. The control signal transmission / reception circuit 11 has a function of transmitting the control signal output from the main control unit 10 to the control line Lc and delivering the control signal received from the control line Lc to the main control unit 10. The operation unit 19 has a function of sending an operation signal indicating that a call button or the like has been pressed to the main control unit 10.

  By the way, the branch line L2 is branched from the trunk line L1 via the branching device 7, and the trunk line control apparatus 3 directly connects the trunk lines L1 of each system. Therefore, the control signal sent from the lobby intercom 1 is transmitted to all the dwelling units 2 connected to the control line Lc. Here, an address (for example, a dwelling unit number) is individually set in the main control unit 10 of the dwelling unit 2, and a control signal (call command) for designating an address is selected by selecting the address in the lobby intercom 1. It is possible to transmit from the alarm monitoring panel 5 to all the dwelling units 2 via the control line Lc. If the address included in the control signal is its own address, the main control unit 10 of the dwelling unit 2 activates the video processing unit 12 and the monitor unit 13 to display the video of the visitor captured by the camera of the lobby intercom 1 The notification sound (calling sound) generated by the notification sound generation unit 27 is transmitted from the speaker 22 while being displayed on the monitor unit 13 of the machine 2. When the resident presses the call button of the dwelling unit 2 in response to the ringing sound, an operation signal is sent from the operation unit 19 to the main control unit 10, and the main control unit 10 controls the call / broadcast switching unit 15. The communication path connected to the trunk interface unit 14 is switched to a state where the communication path is connected to the communication path switching unit 16 and the communication path switching unit 16 is controlled so that the communication path connected to the two-wire / four-line conversion unit 25 is communicated / It is possible to make a call only between the lobby intercom 1 and the selected dwelling unit 2 by switching to a state in which the broadcast broadcast switching unit 15 is connected and establishing a communication path with the lobby intercom 1. At the same time, it is possible to display a visitor captured by the camera only on the selected dwelling unit 2 on the monitor unit 13. When the dwelling unit 2 selected in the lobby intercom 1 establishes a communication path with the lobby intercom 1, the end of the call using an appropriate operation button is detected in the lobby intercom 1 or dwelling unit 2. Then it ends.

  When the call button of the door phone slave unit 6 is pressed and a call signal is sent to the slave unit connection line L3, the main control unit 10 of the dwelling unit 2 that has detected the call signal causes the video processing unit 12 and the monitor unit 13 to detect the call signal. Is displayed on the monitor unit 13 of the dwelling unit 2 and the notification sound (ringing sound) generated by the notification sound generation unit 27 is displayed on the speaker 22. To send. When the resident presses the call button of the dwelling unit 2 in response to the ringing tone, an operation signal is sent from the operation unit 19, and the main control unit 10 controls the call / broadcast switching unit 15 to control the main line interface unit 14. The communication path connected to the communication path switching unit 16 is switched to a state where it is connected, and the communication path switching unit 16 is controlled to connect the communication path connected to the two-wire / four-line conversion unit 25 to the slave interface unit 18. The communication between the door phone slave unit 6 and the dwelling unit 2 can be made possible by switching to the state to establish the communication path between the door phone slave unit 6 and the visit taken by the TV camera. A person can be displayed on the monitor unit 13.

  On the other hand, the alarm monitoring panel 5 is installed in a manager's room of an apartment house, etc., and has a function of calling and broadcasting to each dwelling unit 2 via the call line La, and each dwelling unit via the control line Lc. 2 has a function for instructing the start and end of broadcast. For example, when performing broadcast to all the dwelling units 2 from the alarm monitoring panel 5, a control signal (simultaneous broadcast start command) instructing the start of the broadcast from the alarm monitoring panel 5 is sent to each dwelling unit via the control line Lc. In each dwelling unit 2 that has been transmitted to the machine 2 and received this control signal, the main control unit 10 controls the call / broadcast switching unit 15 in response to the broadcast start command, and the call connected to the main line interface unit 14 The communication path is established with the alarm monitoring board 5 by switching the path to the state connected to the volume correction unit 30, and a broadcast audio signal (hereinafter referred to as "broadcast audio signal") sent from the alarm monitoring board 5 is established. Is transmitted to each dwelling unit 2 via the communication line La. In each dwelling unit 2, the volume correction unit 30 automatically corrects the volume of the broadcast audio signal, and the volume-corrected broadcast audio signal is sent from the speaker 22.

The alarm monitoring panel 5 in this reference example includes a control unit 50 having a CPU as a main component, a control signal transmission / reception unit 51 serving as an interface between the control unit 50 and the control line Lc, and a telephone handset (handset) 52. And amplifiers 53a and 53b that amplify the transmission signal and the reception signal, and a two-wire four-wire conversion unit 54 that performs two-wire four-line conversion between each transmission path on the reception side and the transmission side and two communication lines La. A training signal transmission unit 55 that transmits a training signal to be described later in response to an instruction from the control unit 50, a state in which the transmission line on the transmission side of the two-wire four-wire conversion unit 54 is connected to the handset 52, and a training signal transmission unit The voice / training signal switching unit 56 that selectively switches to the state of connection to 55 and the voice / training signal switching unit 56 are connected to the call line La via the two-wire / four-wire conversion unit 54. And a call / broadcast switching unit 57 for selectively switching to a state of being connected to the call line La via the amplifier 58 without going through the two-wire / four-line converter 54, and a call line La connected to the lobby intercom 1 Open / close switch unit 59 inserted between the telephone line La and the telephone line La connected to the main line control device 3, number keys and call buttons for designating dwelling unit numbers, and volume setting switches for setting the volume of broadcasts And an operation unit 60 having Then, if the administrator selects the dwell unit 2 corresponding to the dwelling unit number by operating the call button after selecting any dwelling unit number by operating the number key of the operation unit 60, the selected dwelling unit 2 and A communication path is formed between the two and the handset 52 can make a call only with the dwelling unit 2. In such a call, the control unit 50 switches the voice / training signal switching unit 56 to a state where the transmission line on the transmission side of the two-wire / four-wire conversion unit 54 is connected to the handset 52 and also calls / broadcast switching unit 57. Is switched to a state in which the voice / training signal switching unit 56 is connected to the call line La via the 2-wire 4-wire conversion unit 54, and the open / close switch unit 59 is opened to disconnect the lobby intercom 1 from the main line L1.

  The training signal transmission unit 55 generates and outputs a training signal having a characteristic in which a spectrum is uniformly distributed over a wide band like white noise (white noise). / Amplified by the amplifier 58 via the simultaneous broadcast switching unit 57 and then transmitted to each dwelling unit 2 via the communication line La.

FIG. 2A is a block diagram showing a specific configuration of the sound volume correction unit 30. Volume correction unit 30 in this reference example, transmission loss estimation means for estimating the transmission loss of the call line La from the alarm monitoring panel 5 to the dwelling unit 2 based on the training signal received via the call line La, Transmission loss compensation means for compensating for the loss due to the transmission loss estimated by the transmission loss estimation means for the broadcast audio signal. The transmission loss compensation means includes an amplifier 39 that amplifies the broadcast audio signal, and the transmission loss estimation means includes a power estimation unit 40 that estimates the signal power (instantaneous power) of the input signal (training signal) X (n); An amplification degree calculation unit 41 that calculates the amplification degree G of the amplifier 39 based on the signal power Ps of the training signal estimated by the power estimation unit 40. The power estimation unit 40 includes an absolute average value calculation unit 401 for obtaining a time average value (absolute average value) P _{X (n)} of the absolute value of the input signal X (n), as shown in FIG. The absolute average value smoothing unit 402 smoothes the time-series absolute average value P _{X (n)} calculated by the value calculating unit 401.

  The absolute average value calculation unit 401 frequency-discriminates an input signal X (n) sampled at a predetermined sampling time, and absolute value calculation for obtaining an absolute value of the input signal X (n) after frequency discrimination. Unit 401b, a division unit 401c that divides the absolute value of input signal X (n) by a predetermined time frame (sampling number M), and the sum of absolute values of input signal X (n) divided by sampling number M. The absolute sum calculation unit 401 performs the calculation of the following equation (1).

  The absolute average value smoothing unit 402 multiplies the absolute average value Px (n) by a positive constant α (<1), a delay shift register 402b, and an instantaneous power estimation delayed by the delay shift register 402b. It consists of a multiplier 402c that multiplies the value Ps (n-1) by a positive constant (1-α), and an adder 402d that adds the outputs of the two multipliers 402a and 402c. The smoothing unit 402 performs the calculation of the following equation (2).

  Further, the amplification degree calculation unit 41 calculates the amplification degree G (= Pr / Ps) by dividing the preset reference value Pr of the signal power by the estimated value Ps of the signal power estimated by the power estimation unit 40. The calculated amplification degree G is set in the amplifier 39.

Next, the operation of the alarm monitoring panel 5 and each dwelling unit 2 when performing simultaneous broadcasting from the alarm monitoring panel 5 to a plurality of dwelling units 2 in this reference example will be described with reference to the flowchart of FIG. First, when an administrator presses a broadcast start button (not shown) provided on the operation unit 60 of the alarm monitoring panel 5 at the start of the broadcast (step S11), the control unit 50 in the alarm monitoring panel 5 A control signal (broadcast start command) instructing the start of broadcast is transmitted from the control signal transmission / reception unit 51 to each dwelling unit 2 via the control line Lc, and a predetermined time has elapsed since the completion of transmission of the control signal. Then, the voice / training signal switching unit 56 is controlled to switch the training signal transmission unit 55 to a state where it is connected to the call / broadcast switching unit 57 and the call / broadcast switching unit 57 is connected via the two-wire / four-line conversion unit 54. After switching to the state of connecting to the telephone line La, the training signal is transmitted from the training signal transmitter 55 (step S12).

  The control signal transmitted from the alarm monitoring panel 5 is received by all the dwelling units 2 that are the target of simultaneous broadcasting. In the dwelling unit 2 that has received the control signal, the main control unit 10 prepares for the start of broadcast in response to the broadcast start command. That is, the main control unit 10 controls the call / broadcast switching unit 15 to switch the communication path connected to the main line interface unit 14 to a state in which it is connected to the volume correction unit 30 so that the training signal can be received. At the same time, the sound volume correction unit 30 is operated (step S21), and when a training signal transmitted from the alarm monitoring panel 5 via the communication line La is received, transmission loss estimation processing is started. In the volume correction unit 30, upon receiving an operation start instruction from the main control unit 10, the power estimation unit 40 estimates the signal power of the input signal X (n), and the estimated value Ps (n) exceeds a predetermined threshold value. Sometimes it is determined that a training signal has been received (step S22), and an estimated value Ps (n) after a predetermined time has elapsed from the time when the training signal was received is used as the signal power Ps of the training signal (steps S23 and S24), and the amplification factor is calculated The unit 41 sets the amplification degree G obtained by dividing the reference value Pr by the signal power Ps in the amplifier 39 (step S25).

  In the alarm monitoring panel 5, the control unit 50 stops the transmission of the training signal by the training signal transmission unit 55 after a predetermined time has elapsed from the start of transmission (step S13), and further controls the voice / training signal switching unit 56 to control the handset 52. Is switched to a state of being connected to the call / broadcast switching unit 57. Then, if the administrator performs a broadcast using the handset 52 (step S14), the broadcast audio signal output from the handset 52 is transmitted from the voice / training signal switching unit 56 via the call / broadcast switching unit 57. Sent to line La. The broadcast broadcast audio signal transmitted from the alarm monitoring panel 5 via the call line La is input from the main line interface unit 14 to the volume correction unit 30 via the call / broadcast switching unit 15 and amplified by the amplifier 39. As a result, the sound volume is corrected, and the broadcast sound is output from the speaker 22 at an appropriate sound volume (step S26).

  When the handset 52 is on-hooked to end the broadcast (step S15), the control unit 50 of the alarm monitoring panel 5 transmits and receives a control signal (broadcast end command) for instructing the end of the broadcast. After transmitting from the unit 51 to each dwelling unit 2 via the control line Lc, the open / close switch unit 59 is closed to return to the standby state. Further, in the dwelling unit 2 that has received the control signal, the main control unit 10 stops the operation of the volume correction unit 30 and controls the call / broadcast switching unit 15 to connect the communication path connected to the main line interface unit 14. The state is switched to the state of connection to the speech path switching means 16, and the standby state is restored.

  By the way, although the operation | movement description mentioned above is a case where the dwelling unit 2 is a standby state (The state which is not talking with the doorphone subunit | mobile_unit 6 or other dwelling units in a dwelling unit), the dwelling unit 2 is the doorphone subunit 6 or the dwelling unit interior. The operation when simultaneous broadcasting is started while talking with other dwelling units (during a call) will be described with reference to the flowchart of FIG.

  When an administrator presses a broadcast start button (not shown) provided on the operation unit 60 of the alarm monitoring panel 5 at the start of the broadcast (step S11), in the alarm monitoring panel 5, the control unit 50 performs the broadcast. When a control signal (simultaneous broadcast start command) for instructing start is transmitted from the control signal transmission / reception unit 51 to each dwelling unit 2 via the control line Lc, and further, when a predetermined time has elapsed from completion of transmission of the control signal, The voice / training signal switching unit 56 is controlled to switch the training signal transmission unit 55 to a state in which the training signal transmission unit 55 is connected to the call / broadcast switching unit 57 and the call / broadcast switching unit 57 does not go through the two-wire / four-line conversion unit 54. After switching to the state of connection to the call line La, the training signal is transmitted from the training signal transmission unit 55.

  The control signal transmitted from the alarm monitoring panel 5 is received by all the dwelling units 2 that are the target of simultaneous broadcasting. In the dwelling unit 2 that is in communication with the door phone 6 or the like among the dwelling units 2 that have received the control signal, the main control unit 10 controls the video processing unit 12 to indicate that simultaneous broadcasting has started. (For example, characters such as “broadcast”) are displayed on the monitor unit 13 (step S30), and at the same time, the notification sound (chime sound) generated by the notification sound generation unit 27 is superimposed on the call voice and transmitted from the speaker 22 ( Step S31) informs the resident who is talking that the broadcast has started. Further, the main control unit 10 controls the call / broadcast switching unit 15 to switch the call path connected to the main line interface unit 14 to a state in which it is connected to the volume correction unit 30 so that the training signal can be received. When the volume correction unit 30 is operated (step S32) and a training signal transmitted from the alarm monitoring panel 5 via the call line La is received, a process for correcting the volume of the broadcast (volume correction process) is started. That is, when the sound volume correction unit 30 receives an operation start instruction from the main control unit 10, the power estimation unit 40 estimates the signal power of the input signal X (n), and the estimated value Ps (n) has a predetermined threshold value. When it exceeds, it is determined that the training signal has been received, the estimated value Ps (n) after a predetermined time has elapsed from the time when the training signal was received is used as the signal power Ps of the training signal, and the amplification degree calculation unit 41 uses the reference value Pr as the signal The amplification degree G obtained by dividing by the power Ps is set in the amplifier 39, and the volume correction process is terminated.

  By the way, the resident who knows that the broadcast is started by the characters displayed on the monitor unit 13 or the chime sound transmitted from the speaker 22 is not used in the case of continuing the call with the door phone slave unit 6 or the like. There is no need to perform the above operation, and the call button on the operation unit 19 may be pushed only when the call with the door phone slave unit 6 or the like is stopped and the broadcast is received. The main control unit 10 of the dwelling unit 2 monitors whether or not an operation signal accompanying the pressing operation of the call button is sent from the operation unit 19 while continuing the communication state with the door phone slave unit 6 or the like (step S33). When the operation signal is transmitted, the process of terminating the call with the door phone slave unit 6 or the like, that is, the call path connected to the two-line / four-line conversion unit 25 and the call / broadcast switching unit 15 Is switched to the connection state and the call processing unit 24 is stopped (step S34).

  In the alarm monitoring panel 5, the control unit 50 stops the transmission of the training signal by the training signal transmission unit 55 after a predetermined time has elapsed from the start of transmission, and then controls the voice / training signal switching unit 56 to call / simultaneously communicate the handset 52. Switch to the state of connection to the broadcast switching unit 57. Then, if the administrator performs broadcast using the handset 52 (step S12), the broadcast audio signal output from the handset 52 is transmitted from the voice / training signal switching unit 56 via the call / broadcast switching unit 57. Sent to line La. The broadcast broadcast audio signal transmitted from the alarm monitoring panel 5 via the call line La is input from the main line interface unit 14 to the volume correction unit 30 via the call / broadcast switching unit 15 and amplified by the amplifier 39. As a result, the volume is corrected, so that the broadcast sound is transmitted from the speaker 22 at an appropriate volume (step S35).

  When the handset 52 is on-hooked to end the broadcast (step S13), the control unit 50 of the alarm monitoring panel 5 transmits and receives a control signal (broadcast end command) for instructing the end of the broadcast. After transmitting from the unit 51 to each dwelling unit 2 via the control line Lc, the open / close switch unit 59 is closed to return to the standby state. Further, in the dwelling unit 2 that has received the control signal, the main control unit 10 stops the operation of the volume correction unit 30, and the amplifier 29a that amplifies the broadcast broadcast audio signal corrected by the volume correction unit 30 After the degree is gradually decreased, the call / broadcast switching unit 15 is controlled to switch the communication path connected to the main line interface unit 14 to the state where it is connected to the communication path switching unit 16 and returns to the standby state.

  Next, an operation in the case where the dwelling unit 2 is called from the door phone slave unit 6 while receiving a broadcast will be described with reference to the flowchart of FIG.

  When the broadcast broadcast sound whose volume has been corrected by the volume correction unit 30 is being transmitted from the speaker 22 (step S35), the visitor presses the call button (step S50), so that the doorphone child unit 6 can connect to the child unit connection line. When the call signal is sent to L3, in the main control unit 10 of the dwelling unit 2, when the main control unit 10 detects the call signal (step S36), the image processing unit 12 is controlled to be called from the intercom unit 6. (For example, a character such as “entrance”) is displayed on the monitor unit 13 (step S37), and the ringing sound generated by the notification sound generation unit 27 is superimposed on the broadcast sound and transmitted from the speaker 22. (Step S38), the resident who is listening to the broadcast is informed that it has been called from the doorphone slave unit 6. Note that the ringing tone generated by the notification sound generating unit 27 is transmitted from the back tone transmission path switching unit 17 to the intercom sub unit 6 via the sub unit connection line L3.

  By the way, a resident who knows that the character is displayed from the doorphone slave unit 6 by a character displayed on the monitor unit 13 or a ringing sound transmitted from the speaker 22 needs to perform any operation when listening to the broadcast as it is. There is no need to press the call button of the operation unit 19 only when the reception of the broadcast is stopped and a call is made with the intercom 6. The main control unit 10 of the dwelling unit 2 monitors whether or not an operation signal associated with the pressing operation of the call button is transmitted from the operation unit 19 while continuing the broadcast reception state (step S39), and the operation signal is transmitted. Then, the communication path switching unit 16 is controlled to switch the communication path connected to the two-wire / four-line conversion unit 25 to a state in which the communication unit interface unit 18 is connected to form a communication path with the intercom unit 6. Then (step S40), the door phone slave unit 6 is activated and the volume correction unit 30 is stopped by supplying DC power via the slave unit connection line L3. As a result, a telephone call can be made between the doorphone slave unit 6 and the dwelling unit 2 via the slave unit connection line L3.

As described above, in this reference example , when a broadcast is started during a call with the door phone slave unit 6, the resident selects whether to continue the call with the door phone slave unit 6 or to switch to the reception of the broadcast broadcast. In addition, if a call is received from the doorphone slave unit 6 during reception of the broadcast, the resident can select whether to continue receiving the broadcast or switch to a call with the doorphone slave unit 6.

(Embodiment 1 )
FIG. 6 is a block diagram of the dwelling unit 2 in the present embodiment. However, since the basic configuration of the present embodiment is the same as that of the reference example , the same components are denoted by the same reference numerals, and illustration and description thereof are omitted as appropriate.

  The dwelling unit 2 according to the present embodiment uses a known compression method such as ADPCM (Adaptive Differential Pulse Code Moudulation) or MP3 (MPEG Audio Layer-3) to convert the broadcast broadcast audio signal after the volume correction by the volume correction unit 30. Audio data for broadcast broadcasting that is composed of an audio compression / decompression unit 31 that compresses and decompresses and a rewritable nonvolatile memory (flash memory or the like) and is compressed by the audio compression / decompression unit 31 (hereinafter, “broadcast audio data”) And an audio storage unit 32 for storing. That is, the broadcast broadcast audio signal transmitted via the communication line La is converted into a digital signal by an A / D converter (not shown), then compressed by the voice compression / decompression unit 31, and the compressed broadcast broadcast data is converted into a voice storage unit. 32 is written and stored (recorded). In order to reproduce the broadcast audio data stored in the audio storage unit 32, the audio compression / decompression unit 31 reads out and expands the broadcast audio data stored in the audio storage unit 32, and then performs D / A conversion (not shown). Then, the signal is converted into an analog signal (broadcast audio signal) by a device, and the broadcast sound is transmitted from the speaker 22. That is, in this embodiment, the audio compression / decompression unit 31 corresponds to a recording unit and a reproducing unit.

As described in the reference example , the main control unit 10 of the dwelling unit 2 receives a call from the doorphone slave unit 6 when a broadcast is started during a call with the doorphone slave unit 6 or during reception of the broadcast. In this case, when the resident selects a call with the intercom 6 without selecting the broadcast reception, the broadcast audio signal is compressed and stored in the audio storage unit 32 (hereinafter, this process). Is called “recording”). However, during recording, the main control unit 10 blocks the signal path from the volume correction unit 30 to the speaker 22 so that the broadcast audio signal is not sent to the speaker 22. Then, when the resident presses a reproduction button (not shown) provided on the operation unit 19 after the call with the door phone sub unit 6 is finished, the main control unit 10 causes the audio compression / decompression unit 31 from the audio storage unit 32 to operate. A process for reading the broadcast audio data and sending the expanded broadcast audio signal to the speaker 22 (hereinafter, this process is referred to as “reproduction”) is performed. Accordingly, the resident records the broadcast broadcast during the call with the doorphone slave unit 6 on the dwelling unit 2, and plays back the broadcast broadcast recorded after the call with the doorphone slave unit 6 ends on the dwelling unit 2. Can be confirmed. In addition, although this embodiment demonstrated the case of the telephone call with the doorphone subunit | mobile_unit 6, it is the same also in the case of the telephone call with the other dwelling unit in a dwelling unit.

(Embodiment 2 )
In the present embodiment, as shown in FIG. 7, the broadcast broadcast audio signal after being corrected by the sound volume correction unit 30 of the dwelling unit 2 is sent not only to the speaker 22 but also to an acoustic device installed in the dwelling unit. There are features. However, since the basic configuration of the present embodiment is the same as that of the reference example , the same components are denoted by the same reference numerals, and illustration and description thereof are omitted as appropriate.

  In the present embodiment, another dwelling unit (hereinafter referred to as a “sub-master unit”) installed at a location different from the location where the dwelling unit 2 (hereinafter referred to as “master unit”) connected to the branch line L2 is installed. 2 ′ and an additional speaker SP installed at a place different from the place where the master unit 2 and the sub-master unit 2 ′ are installed in the dwelling unit are used as an audio device.

  The base unit 2 includes a switch SW1 inserted between the output end of the volume correction unit 30 and the amplifier 29a connected to the speaker 22, and an amplifier 33a connected to the output end of the volume correction unit 30 and the additional speaker SP. Switch SW2 inserted between the transmission line L4, the transmission line L4 connecting the output terminal of the volume correction unit 30 and the call / broadcast switching unit 35 ′ of the sub-master unit 2 ′, and the amplifier 33b connected to the transmission line L4. And a switch SW3 inserted between the output end of the volume correction unit 30.

  The sub-master 2 'has a basic configuration in common with the master 2, and as shown in FIG. 8, a microphone 21' and a speaker 22 ', a call processor 24', a notification sound generator 27 ', and a main controller 10 ', video processing unit 12', monitor unit 13 ', two-wire four-line conversion unit 25', as well as the communication path switching unit 16 and two-wire four-line of the main unit 2 via the extension telephone line La '. Alternatively, a speech path opening / closing section 34 ′ that can be freely opened and closed with the conversion section 25 ′, a state in which the speaker 22 ′ is connected to the call processing section 24 ′, and a state in which the speaker 22 ′ is connected to the transmission line L4. And a call / broadcast switching unit 35 '. However, the same number and “′” are attached to the components having the same function as the base unit 2 and the description is omitted.

Here, as described in the reference example , the main control unit 10 of the master unit 2 calls the doorphone slave unit 6 when a broadcast is started during a call with the doorphone slave unit 6 or during reception of the broadcast. When the resident selects a call with the door phone slave unit 6 without selecting the broadcast reception, the switch SW1 is turned off to block the broadcast broadcast audio signal from being sent to the speaker 22. At the same time, at least one of the switches SW2 and SW3 is turned on. When the switch SW2 is turned on, the broadcast audio signal is amplified by the amplifier 33a and then transmitted from the additional speaker SP. When the switch SW3 is turned on, the main control unit 10 of the master unit 2 transmits a control signal instructing reception of the broadcast to the sub master unit 2 'via an extension control line (not shown). Receiving this control signal, the main control unit 10 ′ of the secondary master unit 2 ′ controls the call / broadcast switching unit 35 ′ to switch the speaker 22 ′ to the state of connecting to the transmission line L4. As a result, a communication path via the transmission line L4 is established between the output terminal of the volume correction unit 30 of the master unit 2 and the speaker 22 ′ of the sub master unit 2 ′, and from the speaker 22 ′ of the sub master unit 2 ′. A broadcast audio signal is transmitted. Accordingly, it is possible to confirm a broadcast that is performed during a call with the door phone slave unit 6 through at least one of the additional speaker SP and the speaker 22 ′ of the secondary master unit 2 ′.

(Embodiment 3 )
FIG. 9 is a block diagram of the dwelling unit 2 in the present embodiment. However, since the basic configuration of the present embodiment is the same as that of the reference example , the same components are denoted by the same reference numerals, and illustration and description thereof are omitted as appropriate.

  The dwelling unit 2 according to the present embodiment uses ADPCM (Adaptive Differential Pulse Code Moudulation) or MP3 (MPEG Audio Layer-3) as a notification sound (voice message, melody sound, etc.) for notifying that simultaneous broadcasting is being received. A voice storage unit 36 that stores (stores) voice data compressed by a known compression method such as the above, and reads out and expands the voice data stored in the voice storage unit 36 and uses the expanded voice data as a notification sound generation unit 27. And an audio decompression unit 37 that outputs to That is, if the voice data accumulated in the voice accumulation unit 36 is decompressed by the voice decompression unit 37 and output to the notification sound generation unit 27, the back tone is transmitted after the notification sound generation unit 27 performs processing such as amplitude adjustment. The information is sent from the path switching unit 17 to the door phone child device 6 via the child device connection line L 3, and a notification sound is heard from the speaker of the door phone child device 6.

As described in the reference example , the main control unit 10 of the dwelling unit 2 receives a call from the doorphone slave unit 6 when a broadcast is started during a call with the doorphone slave unit 6 or during reception of the broadcast. In this case, when the resident selects reception of a broadcast without selecting a call with the intercom 6, the communication path connected to the two-wire / four-wire conversion section 25 by controlling the communication path switching unit 16. Is switched to a state where it is connected to the call / broadcast switching unit 15 to cancel the communication path with the intercom 6 and the call path connected to the main line interface unit 14 by controlling the call / broadcast switching unit 15. Is switched to a state of being connected to the volume correction unit 30 and the voice expansion unit 37 performs a process of reading and expanding the notification sound (such as a voice message or a melody sound) stored in the voice storage unit 36. Further, the main control unit 10 controls the back tone transmission path switching unit 17 so that the notification sound after being expanded by the voice expansion unit 37 and processed by the notification sound generation unit 27 is transmitted from the child unit interface unit 18 to the child unit connection line. The doorphone slave unit 6 is activated by sending it to the doorphone slave unit 6 via L3 and supplying DC power via the slave unit connection line L3, and the video imaged by the TV camera of the doorphone slave unit 6 is displayed as a video. The data is displayed on the monitor unit 13 via the processing unit 12.

  Thus, according to the present embodiment, when a broadcast is started during a call with the door phone slave unit 6 or when a call is received from the door phone slave unit 6 during the reception of the broadcast, the resident is broadcast all at once. When reception of the broadcast is selected, the notification sound that the main control unit 10 of the dwelling unit 2 expands to the sound expansion unit 37 is transmitted to the door phone sub unit 6 via the sub unit connection line L3. It is possible to notify a visitor who has been in a call that the call has been interrupted in order to receive a broadcast, and the main control unit 10 of the dwelling unit 2 can display a video transmitted from the door phone slave unit 6. Therefore, the resident can check the state of the visitor on the video while receiving the broadcast.

It is a system configuration diagram showing a reference example of the present invention. (A) is a block diagram of a sound volume correction unit, and (b) is a block diagram of a power estimation unit. It is a flowchart for demonstrating the operation | movement at the time of simultaneous broadcasting same as the above. It is a flowchart for demonstrating the operation | movement when simultaneous broadcast is performed during a telephone call with a doorphone subunit | mobile_unit in the same as the above. It is a flowchart for demonstrating the operation | movement at the time of being called from a door phone sub unit during reception of simultaneous broadcast in the same as the above. It is a block diagram which shows the dwelling unit in Embodiment 1 of this invention. It is a block diagram which shows the dwelling unit (parent machine) in Embodiment 2 of this invention. It is a block diagram which shows the other dwelling unit (secondary parent machine) in the same as the above. It is a block diagram which shows the dwelling unit in Embodiment 3 of this invention.

Explanation of symbols

2 Unit 5 Alarm monitoring panel 6 Door phone slave unit 19 Operation unit 30 Volume correction unit

Claims (4)

The common unit device that is installed at the common entrance of the apartment house and can input and output voice, and the common unit device that is installed in each dwelling unit of the apartment house is connected via a transmission line and the selection unit that the common unit device has When a visitor is selected by operating the unit, multiple units that establish a communication path with the common unit device, and each unit connected to the unit in the housing complex are connected to a handset for calls. Connected to each other via the transmission line, and the door phone cordless handset that is connected via the cable and transmits a call signal to the dwelling unit via the cord connecting line, and each dwelling unit that is installed in the common area or the manager's room of the housing complex. And a broadcast device that broadcasts audio to all or some of the dwelling units at the same time,
The transmission line comprises at least a control line that transmits a control signal that is generated in accordance with the operation of the selection means and instructs the start of an individual call, and a signal line that transmits an audio signal.
The dwelling unit has a calling means for making a call between the common unit device and the door phone slave unit via a signal line and a slave unit connection line, a speaker for sounding at least a broadcast sound, and a signal line as a calling means. An individual call / broadcast switching unit that selectively switches between a connection state and a state connected to a speaker, a state in which the call unit is connected to the individual call / broadcast switching unit, and a state in which the call unit is connected to the slave unit connection line Call path switching means for switching alternatively, control means for controlling individual call / broadcast switching means and call switching means on the basis of a control signal transmitted via a control line, and communication with a doorphone slave unit a call / broadcast broadcast selection means for selecting a preference of any of the broadcast, and volume correcting means for correcting the volume of the sound of a broadcast simultaneously to be sounded by a speaker, a recording unit for recording the voice of the simultaneous broadcasting, recording And reproducing means for sending from the speaker reproduces the sound of the simultaneous broadcast is recorded in the stage,
When the control unit of each dwelling unit receives a control signal instructing the start of broadcast, if it is not during a call with the door phone slave unit, it controls the call path switching unit to turn the call unit into an individual call / broadcast switching unit. Switch to the connected state and control the individual call / broadcast switching means to switch to the state where the signal line is connected to the speaker. If a call is being made with the doorphone slave unit, the broadcast / broadcast selection means selects the broadcast. The communication path switching means is controlled to switch to a state where the call means is connected to the individual call / broadcast switching means, and the individual call / broadcast switching means is controlled to switch to a state where the signal line is connected to the speaker . When a call signal is received from the intercom unit, if the broadcast is not being received, the communication path switching unit is controlled to switch the communication unit to a state where the communication unit is connected to the sub unit connection line. If a call is selected by the call / broadcast selection means, the call path switching means is controlled to switch the call means to a state where the call means is connected to the slave unit connection line, and the call / broadcast selection means If the call is selected, intercom system for collective housing, wherein the Rukoto to record the voice of the broadcast simultaneously corrected by the volume correction means to the recording means. The sound that is installed in each dwelling unit and connected to the dwelling unit of the dwelling unit through the transmission line and broadcasted by the simultaneous broadcasting device is transmitted from the dwelling unit via the transmission line and the transmitted broadcast sound is transmitted. Equipped with a sound output device
2. The intercom for a dwelling house according to claim 1 , wherein the control means of the dwelling unit transmits the sound of the broadcast to the audio device via the transmission line when the call is selected by the call / broadcast selection means. system. The dwelling unit includes a notification sound generating means for generating a notification sound,
The control unit of the dwelling unit transmits the notification sound generated by the notification sound generation unit to the door phone slave unit via the slave unit connection line when the broadcast / broadcast selection unit selects broadcast. The intercom system for apartment houses according to claim 1 . The door phone sub-unit includes an imaging unit that images a visitor, and a video transmission unit that transmits an image captured by the imaging unit to a dwelling unit.
The dwelling unit is provided with display means for displaying the video transmitted from the door phone slave unit, and the control unit of the dwelling unit is a video transmitted from the door phone slave unit when the broadcast / broadcast selection means is selected. collective housing intercom system of claim 1, wherein the displaying on the display means.

Images