JP3960358B2 - Audio transmission system - Google Patents

Description

  The present invention relates to an audio transmission system that transmits an audio signal via a signal line.

Conventionally, as an audio transmission system that transmits an audio signal through a signal line, for example, a housing information panel installed in each dwelling unit of a housing complex, a door phone slave installed at the entrance of each housing unit, It is equipped with a lobby intercom installed in the common entrance (lobby) and an alarm monitoring panel installed in the management room, and audio signals are transmitted via signal lines between the lobby intercom or the alarm monitoring panel and each house information panel. There is an intercom system (housing information board system) that can make a phone call or transmit a voice signal via a separate telephone line between the door phone slave unit and the housing information board (for example, a patent) Reference 1). Moreover, in such a housing information panel system, two types of housing information panels, a master unit and a secondary master unit, are installed in the same dwelling unit, and extension calls can be made between the master unit and the secondary master unit. One or more crime prevention sensor devices or disaster prevention sensor devices (detection devices) installed in the main unit and the master unit are connected via a communication line, and an abnormality detection signal communicates when an abnormality is detected by the crime prevention sensor device or the disaster prevention sensor device. It was transmitted to the parent machine via a line, and an alarm sound and a voice message were sounded in the parent machine.
JP 11-219490 A

  However, in the conventional system as described above, in order to ring the voice message corresponding to the newly added detection device, for example, it is necessary for the contractor to update the software of the master unit and register the voice message data. there were. As a result, there is a problem that the number of work steps accompanying the addition of the detection device increases.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an audio transmission system in which a detection device can be easily added to the system.

  In order to achieve the above object, the first aspect of the present invention provides one or more voice input terminal devices including at least voice input means for inputting voice and one or more voice output means for outputting voice at least. A voice input terminal device, a voice input terminal device, and a main device connected to the voice output terminal device via a signal line, and a voice signal is transmitted from the voice input terminal device to the voice output terminal device via the main device. An audio transmission system that performs division multiplexing transmission, and includes one or more detection devices that are installed indoors and detect an abnormality such as a fire or a suspicious person, and the detection device detects the abnormality; Data communication means for performing data communication with the main apparatus, and notification data for notifying abnormality detection when an abnormality is detected by the detecting means is transmitted from the data communication means to the main apparatus. Knowledge means, storage means for storing the encoded voice message data, and voice message registration means for transmitting the voice message data stored in the storage means to the main apparatus from the data communication means. The voice output terminal apparatus includes the voice output means and voice signal receiving means for receiving a voice signal transmitted in a downlink time slot via the signal line, and the main apparatus is configured to receive an uplink signal. Between the audio signal transmitting / receiving means for receiving the audio signal transmitted by the audio input terminal device in the time slot and transmitting the audio signal to the audio output terminal device in the downstream time slot, and the detection device. Data communication means for performing the data communication, storage means for storing the voice message data received by the data communication means, and the communication means by the data communication means. When the data is received, the voice message data sent from the detection device that is the transmission source of the notification data is read from the storage means, and the voice signal transmission / reception means is sent to the voice signal transmission / reception means in the downlink time slot with respect to the voice output terminal device Control means for transmitting, wherein the voice output terminal device causes the voice output means to ring a voice message corresponding to the voice message data received by the voice signal receiving means.

  According to a second aspect of the present invention, in order to achieve the above object, at least one voice input terminal device including voice input means for inputting voice and one or more voice output means for outputting voice at least. A voice input terminal device, a voice input terminal device, and a main device connected to the voice output terminal device via a signal line, and a voice signal is transmitted from the voice input terminal device to the voice output terminal device via the main device. An audio transmission system that performs division multiplexing transmission, and includes one or more detection devices that are installed indoors and detect an abnormality such as a fire or a suspicious person, and the detection device detects the abnormality; Data communication means for performing data communication with the main apparatus, and notification data for notifying abnormality detection when an abnormality is detected by the detecting means is transmitted from the data communication means to the main apparatus. Knowledge means, storage means for storing character data representing the contents of a voice message, and voice message registration means for transmitting the character data stored in the storage means to the main apparatus from the data communication means. The audio output terminal apparatus includes the audio output means and an audio signal receiving means for receiving an audio signal transmitted in a downlink time slot via the signal line, and the main apparatus is Between the detection device and the audio signal transmitting / receiving means for receiving the audio signal transmitted by the audio input terminal device in the time slot in the direction and transmitting the audio signal to the audio output terminal device in the time slot in the down direction; Data communication means for performing communication, storage means for storing the character data received by the data communication means, and receiving the notification data by the data communication means The character data sent from the detection device that is the transmission source of the notification data is read out from the storage means, and the character data is converted into voice message data, and the time slot in the downlink direction with respect to the voice output terminal device Control means for transmitting to the voice signal transmitting / receiving means, and the voice output terminal device causes the voice output means to ring a voice message corresponding to the voice message data received by the voice signal receiving means. And

  According to a third aspect of the present invention, in order to achieve the above object, at least one voice input terminal device having voice input means for inputting voice and one or more voice output means for outputting voice at least. A voice input terminal device, a voice input terminal device, and a main device connected to the voice output terminal device via a signal line, and a voice signal is transmitted from the voice input terminal device to the voice output terminal device via the main device. An audio transmission system that performs division multiplexing transmission, and includes one or more detection devices that are installed indoors and detect an abnormality such as a fire or a suspicious person, and the detection device detects the abnormality; Data communication means for performing data communication with the main apparatus, and notification data for notifying abnormality detection when an abnormality is detected by the detecting means is transmitted from the data communication means to the main apparatus. Knowledge means, storage means for storing a selection code for selecting one voice message from a plurality of types of voice messages, and transmitting the selection code stored in the storage means to the main unit from the data communication means Control means, and the voice output terminal device comprises the voice output means and voice signal receiving means for receiving a voice signal transmitted in a downlink time slot via the signal line, The main apparatus receives the audio signal transmitted by the audio input terminal device in the uplink time slot and transmits the audio signal to the audio output terminal device in the downlink time slot; and the detection Data communication means for performing data communication with a device, storage means for storing a plurality of types of voice message data in association with selection codes, and the data When the notification data is received by the communication means, the voice message data selected by the selection code sent from the detection device that is the transmission source of the notification data is read from the storage means and is sent to the voice output terminal device Control means for causing the voice signal transmitting / receiving means to transmit in a downlink time slot, and the voice output terminal device transmits a voice message corresponding to the voice message data received by the voice signal receiving means from the voice output means. It is characterized by making it ring.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the control means of the main device sends the voice message data to the voice signal in a downlink time slot to a plurality of voice output terminal devices. The transmission / reception means transmits the data.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the control means of the main device sends different types of voice message data to a plurality of groups including one to a plurality of voice output terminal devices by the voice signal transmitting / receiving means. It is characterized by transmitting.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein at least one of the plurality of audio input terminal devices or audio output terminal devices is imaged by the imaging means and the imaging means. Modulation means for modulating video, and video signal transmission means for transmitting the video signal modulated by the modulation means in a frequency band different from the frequency band of the audio signal, wherein the main device is the audio input terminal device or the audio output Video signal receiving means for receiving the video signal transmitted by the terminal device; demodulating means for demodulating the video signal received by the video signal receiving means; and display means for displaying the video demodulated by the demodulating means. Features.

  According to the first to third aspects of the present invention, the voice message data, character data, or selection code is held in the detection device, and when added to the system, the voice message data or character data is sent from the detection device to the main device. Alternatively, since the selection code is transmitted and stored in the storage unit, it is not necessary to register voice message data for the main device when a new detection device is added, and the detection device can be easily added to the system. .

  According to invention of Claim 4, abnormality detection can be reliably notified by sounding a voice message from arbitrary voice output terminal devices.

  According to the invention of claim 5, a voice message suitable for the installation location of the voice output terminal device can be sounded.

  According to the sixth aspect of the present invention, video captured by the voice input terminal device or the output terminal device can be displayed on the display means of the main device. For example, the voice input terminal device or the output terminal device can be displayed outside the dwelling unit. In the case of a door phone slave installed at the entrance, the main device installed in the dwelling unit can check the video of the visitor, improving usability.

  Hereinafter, an embodiment in which the technical idea of the present invention is applied to an intercom system for a detached house will be described in detail.

(Embodiment 1)
As shown in FIG. 1, the audio transmission system (interphone system) of the present embodiment is connected to a plurality of audio terminal devices 2 installed indoors in a dwelling unit H, and the plurality of audio terminal devices 2 via a signal line Ls. Main device (parent device) 1, door phone sub unit 3 installed outside unit (exterior) of dwelling unit H and connected to parent device 1 via communication line Lx, and one or more installed indoors The detection device 4 is provided. In a room, the main device 1 as a main device is installed in the living room, a plurality of voice terminal devices 2 are installed in other rooms (for example, private rooms of each family), and the detection device 4 is installed in a kitchen or the like. Yes. Note that although a balanced line such as a pair line is used as the signal line Ls, an unbalanced line such as a coaxial line may be used. Further, a pair of enhanced category 5 or category 6 LAN cables or a pair of CPEV cables may be used for the signal line Ls.

  The intercom unit 3 includes a microphone 30, a speaker 31, a microphone amplifier 32a that amplifies the output of the microphone 30, a speaker amplifier 32b that amplifies the input to the speaker 31, a call button 33 that is operated by the visitor, and a visitor. A video signal output from the camera unit 34, and audio / video demultiplexing for frequency-division multiplexing of the audio signal and 2-line 4-line conversion processing of the audio signal and transmission processing of the calling signal Part 35 and a terminal part 36 to which the communication line Lx is connected. However, since the structure of the door phone sub unit 3 is well known in the art, a detailed description thereof will be omitted.

  The detection device 4 includes a detection unit 40 that detects an abnormality, a data communication unit 41 that performs data communication with the parent device 1, and detects an abnormality from the data communication unit 41 when an abnormality is detected by the detection unit 40. The control part 42 which transmits the data for notifying, and the power supply part 43 which supplies the operation power supply of each part 40-42 by using a battery as a power supply are comprised. The data communication unit 41 frequency-division-multiplexes a communication signal obtained by modulating the data supplied from the control unit 42 with a modulation scheme such as FSK (frequency shift keying) or PSK (phase shift keying) and a signal line Ls. To send through. For example, the detection unit 40 can detect an intruder by an optical smoke detection function, a function to detect a temperature rise due to a fire, a function to detect the concentration of combustible gas by a gas sensor, or a human sensor using a pyroelectric element. Although it has a detection function, etc., any detection function can be realized by a conventionally well-known technique, and therefore detailed illustration and description are omitted. Further, the detection device 4 may be provided with an operation button that can be operated by a person in the detection unit 40 and that provides a detection output from the detection unit 40 to the control unit 42 when the operation button is operated.

  The audio terminal device 2 includes a microphone 20a and a speaker 20b, a microphone amplifier 21a that amplifies the output of the microphone 20a, a speaker amplifier 21b that amplifies the input to the speaker 20b, and modulates and demodulates the audio signal using a digital modulation method. A control signal is transmitted via the signal line Ls between the audio signal multiplex transmission processing unit 22 for time division multiplex transmission (TDMA <Time Division Multiple Access>) stored in the time slot and the downlink time slot, and the base unit 1. A control signal transmission processing unit 23 for transmission, a demultiplexing unit 24 for frequency-division multiplexing and demultiplexing of the control signal and the audio signal, a control unit 25 for controlling each unit with the CPU as a main component, an extension button described later, An operation unit 26 having an operation button (not shown) such as a response button and outputting an operation signal to the control unit 25 in accordance with the operation of the operation button, and a signal line L There is and a terminal portion 27 connected. That is, the voice terminal device 2 according to the present embodiment is a voice input terminal device because both the voice input means (microphone 20a) for inputting voice and the voice output means (speaker 21a) for outputting voice are provided. At the same time, it is a voice output terminal device. However, the configuration of the voice terminal device 2 is not limited to this, and a voice input terminal device having voice input means and no voice output means, or having voice output means and no voice input means. It may be configured as an audio output terminal device. However, at least an audio output terminal device is necessarily required in the room in which the detection device 4 is disposed. Each voice terminal apparatus 2 is given a unique identification code (ID), and each terminal apparatus 2 can be identified by this identification code.

  The audio signal multiplex transmission processing unit 22 converts an analog audio signal output from the microphone 20a and amplified by the microphone amplifier 21a into a digital signal, and performs BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying), 16QAM. (Quadrature Amplitude Modulation), a process of modulating by a digital modulation method such as 64QAM, and a process of demodulating the audio signal separated from the control signal by the demultiplexer 24 and converting it to an analog signal and outputting it to the speaker amplifier 21b . The control signal transmission processing unit 23 also modulates the control data given from the control unit 25 by a modulation scheme such as FSK (frequency shift keying) or PSK (phase shift keying), and the demultiplexing unit 24 performs audio signal processing. And a process of demodulating the separated control signal and passing control data to the control unit 25.

  The base unit 1 includes a terminal unit 10a to which the call line Lx is connected and a terminal unit 10b to which the signal line Ls is connected, and a video signal and an audio signal that are frequency-division multiplexed and transmitted from the doorphone sub unit 3 through the call line Lx. And a video signal separated by the demultiplexing unit 11 having a display device such as a liquid crystal display or a CRT, and a demultiplexing unit 11 for transmitting an audio signal to the doorphone sub unit 3 via the communication line Lx. The monitor unit 12 that demodulates and displays the signal, the microphone 13a and the speaker 13b, the microphone amplifier 13c that amplifies the output of the microphone 13a, the speaker amplifier 13d that amplifies the input to the speaker 13b, and echo cancellation processing (sound signal) Digital processing that suppresses unpleasant echoes) and voice switch processing (loss on the low volume side between the sending and receiving sides) A speech processing unit 14 for performing a speech direction control process that preferentially outputs an audio signal with a high volume and the like, and the audio signal is modulated and demodulated by a digital modulation method, and stored in upstream and downstream time slots. A voice signal multiplex transmission processing unit 15 that performs time division multiplex transmission, a control signal transmission processing unit 16 that transmits a control signal via the signal line Ls between each voice terminal device 2, and a frequency of the control signal and the voice signal. A demultiplexing unit 17 that performs division multiplexing and demultiplexing, a control unit 18 that controls each unit with a CPU as a main component, and a storage unit 19 that stores ringing tone data and the like to be described later.

  The call processing unit 14 includes a DSP (digital signal processor), an A / D converter, a D / A converter, a codec circuit, and the like. An analog audio signal transmitted via Lx is converted into a digital audio signal, which is caused by acoustic coupling between the microphone 30 and the speaker 31 of the door phone slave unit 3, acoustic coupling between the microphone 13a and the speaker 13b of the base unit 1, or the like. Processing is performed such as suppressing unpleasant echoes and comparing the direction of the voice by comparing the level of the voice (speech voice) input from the microphone 13a and the voice (received voice) transmitted from the doorphone slave unit 3. . Further, the call processing unit 14 generates unpleasant echoes with the voice terminal device 2 due to acoustic coupling between the microphone 20a and the speaker 20b of the voice terminal device 2, acoustic coupling between the microphone 13a and the speaker 13b of the parent device 1, or the like. Processing to suppress or switch the call direction by comparing the level of the voice (transmitted voice) input from the microphone 13a and the voice (received voice) transmitted from the voice terminal device 2 is performed. Further, when the voice terminal devices 2 talk to each other individually (extension call), the call processing unit 14 performs signal processing on the voice signals stored and transmitted from the respective voice terminal devices 2 in the uplink time slot. By doing so, unpleasant echo caused by acoustic coupling between the microphone 20a and the speaker 20b is suppressed, or the call direction is switched by comparing the level of the audio signal.

  Here, in the base unit 1, the synchronization signal is sent to the signal line Ls via the demultiplexing unit 17 under the control of the control unit 18. A plurality (2n) of time slots are arranged within a period (signal transmission period) from the start of the time slot until the next synchronization signal rises. The first n time slots are in the up direction, and the second n time slots are in the down direction. Hereinafter, in order to simplify the description, an uplink time slot is referred to as an “uplink slot”, a downlink time slot is referred to as a “downlink slot”, and a combination of an uplink slot and a downlink slot is referred to as a channel. Therefore, in this embodiment, n (n channels) uplink slots and downlink slots are arranged in the signal transmission period, so that a maximum of n voice terminal apparatuses 2 can individually talk on a one-to-one basis.

  Next, the operation of this embodiment when a one-to-one call (individual call) is performed between two voice terminal apparatuses 2 will be described with reference to FIG. In the following, a case where two units of the voice terminal device 2A and the voice terminal device 2B make an individual call will be exemplified.

  First, when an extension button (not shown) of the operation unit 26 is operated in the voice terminal device 2A, an operation signal is output from the operation unit 26 to the control unit 25, and the control unit 25 that has received the operation signal receives the extension call. Request control data is generated and given to the control signal transmission processing unit 23. The control signal transmission processing unit 23 sends the control data of the extension call request and its own identification code through the demultiplexing unit 24 and the terminal unit 27 by the control signal. The signal is sent to the signal line Ls.

  On the other hand, in base unit 1, the control signal transmitted via signal line Ls is separated by demultiplexing unit 17 and received by control signal transmission processing unit 16, and the extension call request and request source included in the received control signal. Is sent to the control unit 18. The control unit 18 reads out the ringing tone data stored in the storage unit 19 and gives it to the call processing unit 14. The control unit 18 causes the speaker 13 b to ring through the call processing unit 14 and includes the identification code of the request source. A control signal including the ringing tone data with all the identification codes as destinations is transmitted by the control signal transmission processing unit 16 via the signal line Ls.

  In the voice terminal devices 2A, 2B, 2C, 2D, when the control signal transmission processing unit 23 receives the control signal transmitted from the base unit 1, and passes the ringing tone data included in the received control signal to the control unit 25, The control unit 25 converts the ringing tone data into an analog ringing tone signal, and causes the speaker 20b to ring through the voice signal multiplex transmission processing unit 22. When an extension button (not shown) of the operation unit 26 is operated in the voice terminal device 2B, an operation signal is output from the operation unit 26 to the control unit 25, and the control unit 25 that receives the operation signal receives a request. Control data of a response (extension response) indicating that the individual call with the original voice terminal apparatus 2A has been accepted is generated and given to the control signal transmission processing unit 23, and the control signal transmission processing unit 23 The self identification code is sent to the signal line Ls via the demultiplexing unit 24 and the terminal unit 27 by the control signal.

  In base unit 1, control signal transmitted from voice terminal apparatus 2 B is received by control signal transmission processing unit 16, and extension response control data and response destination identification code included in the received control signal are sent to control unit 18. Then, the control unit 18 causes the control signal transmission processing unit 16 to transmit a control signal including control data for extension response permission with the request source identification code as a destination.

  Then, in all the voice terminal devices 2 including the request source voice terminal device 2A and the response destination voice terminal device 2B, the control unit 25 stops ringing of the ringing tone by the speaker 20b. Here, it is assumed that a time slot of channel 1 is allocated to the requesting voice terminal apparatus 2A, and a time slot of channel 2 is allocated to the voice terminal apparatus 2B of the response destination. Accordingly, in the requesting voice terminal apparatus 2A, the voice (transmission voice) input from the microphone 20a is modulated by the voice signal multiplex transmission processing unit 22, and the modulated voice signal (transmission signal) is transmitted to the channel 1 upstream. The data is stored in the slot and transmitted to the base unit 1 through the signal line Ls. In base unit 1, a voice signal (transmission signal) transmitted from voice terminal apparatus 2 </ b> A is received by voice signal multiplex transmission processing unit 15, demodulated, and output to call processing unit 14. Then, the call processing unit 14 performs echo suppression processing, call direction switching processing, and the like (hereinafter referred to as “amplified call processing”) on the audio signal, and the processed audio signal is again transmitted to the audio signal multiplex transmission processing unit 15. Then, the data is modulated and stored in the downlink slot of channel 2 and transmitted to the voice terminal device 2B as the response destination.

  Then, in the response destination voice terminal apparatus 2B, the voice signal stored in the downlink slot of channel 2 is taken in, demodulated by the voice signal multiplex transmission processing unit 22 and the received voice is sounded from the speaker 20b, and the microphone 20a. Is modulated by the audio signal multiplex transmission processing unit 22, the modulated audio signal (transmission signal) is stored in the upstream slot of channel 2, and the master unit 1 is connected via the signal line Ls. Transmit to. In base unit 1, a voice signal (transmission signal) transmitted from voice terminal apparatus 2 B is received by voice signal multiplex transmission processing unit 15, demodulated and output to call processing unit 14. Call processing is performed, and the processed audio signal is again modulated by the audio signal multiplex transmission processing unit 15 and stored in the downlink slot of channel 1 and transmitted to the audio terminal device 2A. Then, in the voice terminal device 2A, the voice signal stored in the downlink slot of channel 1 is taken in, demodulated by the voice signal multiplex transmission processing unit 22, and the received voice is sounded from the speaker 20b. 2A and B can transmit and receive audio signals using the time slots of channels 1 and 2 to enable individual calls. Note that the assignment of channels to be used for all voice terminal apparatuses 2A, 2B, 2C, and 2D may be determined in advance, or the assignment is notified by a control signal from the master unit 1 when actually performing an extension call. You may make it.

  Next, the operation of the detection device 4 which is the gist of the present invention will be described with reference to FIG.

  First, when the detection device 4 is added to the existing system and the power of the detection device 4 is turned on, the control unit 42 gives the control data of the activation notification to the data communication unit 41, and the data communication unit 41 modulates the control data The communication signal is frequency-division multiplexed with the audio signal and transmitted via the signal line Ls. The control data of the activation notification includes the type of the detection device 4 (for example, a fire detection device that detects a fire, a gas leak detection device that detects a gas leak, and the like) and a unique identification code. It is modulated by the same modulation method as the control signal transmitted between the voice terminal devices 2.

  On the other hand, in base unit 1, the communication signal transmitted via signal line Ls is separated from the audio signal by demultiplexing unit 17 and received by control signal transmission processing unit 16, and the communication signal is transmitted by control signal transmission processing unit 16. The demodulated control data is transferred to the control unit 18. Upon receipt of the control data, the control unit 18 generates control data for a voice message acquisition request and supplies the control data to the control signal transmission processing unit 16, and sends the voice message from the control signal transmission processing unit 16 to the identification code included in the control data. A control signal (communication signal) including the control data for the acquisition request is sent to the signal line Ls.

  In the detection device 4, the data communication unit 41 receives a control signal and passes control data demodulated from the control signal to the control unit 42, and the control unit 42 responds to a voice message acquisition request for the control data to a memory (not shown). The voice message data stored in (1) is read out and given to the data communication unit 41, and the data communication unit 41 frequency-division-multiplexes the communication signal modulated with the control data with the voice signal and transmits it via the signal line Ls. . In the base unit 1, the voice message data demodulated from the communication signal by the control signal transmission processing unit 16 is stored in the storage unit 19 by the control unit 18 in association with the identification code of the transmission source detection device 4. The voice message data stored in the memory of the detection device 4 is obtained by converting a voice message into digital data by a voice coding method such as ADPCM (Adaptive Differential Pulse Code Moudulation).

  When the detection unit 40 detects an abnormality in the detection device 4, the control unit 42 generates data for notifying abnormality detection (the content of the detected abnormality, for example, the occurrence of gas leakage), and the data communication unit 41 The communication signal including the abnormality detection notification data and its own identification code is modulated and frequency-division multiplexed with the voice signal and transmitted via the signal line Ls.

  On the other hand, in the base unit 1, the communication signal transmitted via the signal line Ls is separated by the demultiplexing unit 17 and received by the control signal transmission processing unit 16, and an abnormality detection notification and notification included in the received communication signal are received. The original identification code is passed to the control unit 18. Here, in the storage unit 19, the identification code of the voice terminal device 2 that rings a voice message when an abnormality is detected by the detection device 4 is stored in association with the identification code of the detection device 4. Therefore, the control unit 18 reads the identification code of the voice terminal device 2 associated with the identification code of the detection device 4 that is the notification source from the storage unit 19, generates control data instructing the start of transmission of the voice message, and generates a control signal. The control signal transmission processing unit 16 transmits a control signal including control data for starting voice message transmission with the identification code of the voice terminal device 2 as a destination. Further, the control unit 18 sends voice message data corresponding to the identification code of the detection device 4 that is the notification source (for example, voice message data having a content such as “gas leaked in the grandfather's room”) from the storage unit 19. The voice signal including the voice message data is read and modulated by the voice signal multiplex transmission processing unit 15, and the modulated voice signal is stored in the downlink slot of channel 1 and transmitted.

  Then, in the voice terminal device 2 associated with the detection device 4, the voice data transmission start control data included in the control signal received by the control signal transmission processing unit 23 is passed to the control unit 25, and the control unit 25. When the start of voice message transmission is notified, the voice signal stored in the downlink slot of channel 1 is taken in, demodulated and decoded by the voice signal multiplex transmission processing unit 22, and the voice message is sounded from the speaker 20b.

  As described above, according to the present embodiment, the voice message data is held in the detection device 4, and the voice message data is transmitted from the detection device 4 to the parent device 1 when added to the system. 1 is stored in the storage unit 19, so that when adding a new detection device 4, the task of registering voice message data in the parent device 1 is not required, and the detection device 4 can be easily added to the system. . Further, since it is not necessary to store voice message data that is not used in the storage unit 19 of the base unit 1, an increase in the cost of the base unit 1 due to an increase in the capacity of the storage unit 19 can be suppressed. In the present embodiment, data communication between the detection device 4 and the parent device 1 is wired communication via the signal line Ls, but wireless communication using a medium such as radio waves or light may be used. Further, when the detection device 4 is in a wired connection form, AC power can be supplied via a wire instead of a commercial power supply. In that case, the power supply unit 43 does not need to rely on a battery.

  Here, the identification code of the voice terminal device 2 that rings the voice message when an abnormality is detected by the detection device 4 is stored in the storage unit 19 in association with the identification code of the detection device 4. The voice terminal device 2 to be sounded is not limited to one, and a plurality of voice terminal devices 2 may sound a voice message at the same time. Specifically, control data for starting voice message transmission is transmitted to a plurality of voice terminal apparatuses 2, and the control unit 25 stores the control data in the downlink slot of channel 1 in the plurality of voice terminal apparatuses 2 that have received the control data. What is necessary is just to take in the audio | voice signal currently read, to demodulate and decode by the audio | voice signal multiplex transmission process part 22, and to sound an audio | voice message from the speaker 20b. In this way, if a voice message is sounded from any voice terminal device 2, it is possible to reliably notify abnormality detection.

  Further, different voice messages are transmitted in the downlink slots of different channels. For example, in the voice terminal device 2 installed in the same room as the detection device 4 that has detected an abnormality, the voice message transmitted in the downlink slot of the channel 1 ( The voice message “A gas leak has occurred. Please evacuate immediately.” Is sounded from the speaker 20b, and the voice terminal 2 installed in a different room from the detection device 4 goes down channel 2. The voice message transmitted in the slot (the voice message with the content “gas leaked in the grandfather's room”) can be sounded from the speaker 20b. In this way, the voice message suitable for the installation location of the voice terminal device 2, for example, the voice terminal device 2 installed in the room where the gas leak occurred and the voice terminal device 2 installed in another room Can sound a voice message suitable for each. The selection of which voice message is to be ringed by which voice terminal device 2 may be performed by individually allocating the downlink slots of channels 1 and 2 using a control signal transmitted from base unit 1. Also, one voice message is transmitted to a group of a plurality of voice terminal devices 2 including the voice terminal device 2 in the same room as the detection device 4 in which the abnormality is detected, and the voice terminal device 2 in the same room as the detection device 4 in which the abnormality is detected. The other voice message may be transmitted to a group of a plurality of voice terminal apparatuses 2 that do not include.

  By the way, instead of storing the voice message data obtained by encoding the voice waveform of the voice message in the memory of the detection device 4, character data (text data) representing the content of the voice message is stored in the memory of the detection device 4. When the detection device 4 is added to the system, the character data stored in the memory is transmitted to the main unit 1 and stored in the storage unit 19. When the abnormality detection notification is received from the detection device 4, the parent data is stored. A voice synthesis process for converting the character data stored in the storage unit 19 into voice message data by the control unit 18 of the machine 1 may be performed, and the voice message data after the voice synthesis process may be transmitted to the voice terminal device 2. Absent. Thus, if the voice message stored in the memory of the detection device 4 is character data, there is an advantage that the memory capacity of the detection device 4 can be reduced as compared with the case where voice message data obtained by encoding a voice waveform is stored. . The voice synthesis performed by the control unit 18 is well known in the art and will not be described in detail.

  Alternatively, a selection code for selecting one voice message from a plurality of types of voice messages is stored in the memory of the detection device 4, and the selection code stored in the memory when the detection device 4 is added to the system. Is transmitted to the base unit 1 and stored in the storage unit 19, and the voice corresponding to the selected code stored in the storage unit 19 by the control unit 18 of the base unit 1 when the abnormality detection notification is received from the detection device 4. The message data may be read and transmitted to the voice terminal device 2. Thus, if the data stored in the memory of the detection device 4 is a selection code, the detection device 4 can be compared with a case where voice message data obtained by encoding a voice waveform or character data representing the content of the voice message is stored. There are advantages in that the memory capacity can be reduced and the amount of communication data from the detection device 4 to the master unit 1 can be reduced when added to the system. In the above-described embodiment, voice transmission is performed in a total of 2n slots, that is, an uplink slot and a downlink slot. However, if the signal amount of the signal to be transmitted is large, the total of 2n slots is one cycle. As a result, signal transmission may be performed continuously for m cycles.

(Embodiment 2)
A system configuration diagram of this embodiment is shown in FIG. The present embodiment is characterized in that a voice terminal device 2E connected to the master unit 1 via a signal line Ls is installed at the outside entrance of the dwelling unit H instead of the door phone slave unit 3. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common components are denoted by the same reference numerals, and illustration and description thereof are omitted as appropriate.

  A voice terminal device (hereinafter referred to as a “door phone terminal device”) 2E installed at the outside entrance includes a camera unit 29a and a video signal multiplex transmission processing unit in addition to the same components as the other voice terminal devices 2A to 2D. 29b. The camera unit 29a is configured by an optical system such as an individual image sensor or a lens, and images a visitor. The video signal multiplex transmission processing unit 29b converts the analog video signal output from the camera unit 29a into a digital signal and modulates the modulated video signal (video) in a frequency band different from the frequency band for transmitting the audio signal. Data) is stored in the upstream slot and transmitted. In the demultiplexing unit 24, the video signal output from the video signal multiplex transmission processing unit 29b is frequency division multiplexed with the audio signal and the control signal.

  On the other hand, in the base unit 1 in the present embodiment, the video signal transmitted via the signal line Ls is separated by the demultiplexing unit 17, and the separated video signal is demodulated by the video signal processing unit 11 and from the digital signal. An image is displayed on the monitor unit 12 by converting it into an analog signal.

  Next, the operation of the present embodiment will be described by taking as an example a case in which a video image captured by the door phone terminal device 2E is displayed on the parent device 1 at the same time that a call is made between the parent device 1 and the door phone terminal device 2E.

  First, when a call button (not shown) provided on the operation unit 26 is operated in the door phone terminal device 2E, the control unit 25 generates a call notification for calling the base unit 1 and sends it to the control signal transmission processing unit 23. Then, the control signal transmission processing unit 23 sends the call notification and its own identification code to the signal line Ls via the demultiplexing unit 24 by the control signal. Further, the control unit 25 activates the camera unit 29a to image a person (visitor) who operates the call button, and converts an analog video signal output from the camera unit 29a into a digital signal by the video signal multiplex transmission processing unit 29b. And modulate. The modulated video signal is stored in the uplink slot (for example, the uplink slot of channel 5) assigned to the intercom terminal device 2E by the demultiplexing unit 24 and transmitted to the signal line Ls.

  On the other hand, in the base unit 1, the control unit 18 that has received the control signal for the call notification via the signal line Ls causes the speaker 13 b to ring and uses all the identification codes including the identification code of the request source as the destination. A control signal including ringing tone data is transmitted by the control signal transmission processing unit 16 via the signal line Ls. Also, a video signal transmitted from the door phone terminal device 2E via the signal line Ls is taken into the video signal processing unit 11 via the demultiplexing unit 17, demodulated by the video signal processing unit 11, and converted into an analog signal, An image is displayed on the monitor unit 12. Then, when a resident who has viewed the video on the monitor unit 12 operates a response button (not shown) of the base unit 1, the control unit 18 activates the call processing unit 14 to enable a call, and further the door phone terminal device 2E. The control signal transmission processing unit 16 causes the control signal transmission processing unit 16 to transmit the control signal including the control data including the control data to the notification that the telephone call is started (call start notification).

  In the intercom terminal device 2E, when the control signal of the call start notification is received by the control signal transmission processing unit 23, the control unit 25 activates the audio signal multiplex transmission processing unit 22 to enable a call, and the collected sound is collected by the microphone 20a. The audio signal output from the multiplex transmission processing unit 22 is multiplexed with the video signal by the demultiplexing unit 24 (frequency division multiplexing), stored in the assigned channel 5 uplink slot, and transmitted to the base unit 1. Further, the audio signal stored and transmitted from the base unit 1 in the downlink slot of channel 5 is separated by the demultiplexing unit 24, and the separated audio signal is input to the audio signal multiplex transmission processing unit 22 and is transmitted from the speaker 24b. Ring.

  In the base unit 1, the audio signal (received signal) and the video signal transmitted from the door phone terminal device 2E are separated by the demultiplexing unit 24, received by the audio signal multiplex transmission processing unit 15, and demodulated to be processed by the call processing unit 14. Output to. Then, the call processing unit 14 performs loudspeaking call processing on the voice signal (received signal) and causes the speaker 13b to ring with the processed voice signal (analog signal). Further, the voice signal (transmission signal) output from the microphone 13 a is subjected to the voice call processing by the call processing unit 14, and then converted and modulated by the voice signal multiplex transmission processing unit 15. Store and transmit to door phone terminal apparatus 2E. The video signal separated by the demultiplexing unit 17 is demodulated by the video signal processing unit 11, converted from a digital signal to an analog signal, and output to the monitor unit 12. In this way, a video signal is transmitted from the door phone terminal device 2E to the parent device 1, and a voice signal is transmitted bidirectionally between the door phone terminal device 2E and the parent device 1, thereby making a call. Note that the case where one of the other voice terminal devices 2A to 2D answers the call from the door phone terminal device 2E is basically the same as the extension call between the voice terminal devices 2A to 2D described in the first embodiment. Since this is an operation, the description is omitted.

  Thus, in this embodiment, since the voice terminal device (door phone terminal device) 2E is installed at the outside entrance of the dwelling unit H in place of the door phone slave unit 3, it is used only for calls with the door phone slave unit 3. Since the demultiplexing unit 11 and the terminal unit 10a are not required, the configuration of the base unit 1 can be simplified, and further, a telephone call (intercom call) inside and outside the dwelling unit H and a call (extension call) inside the dwelling unit H can be performed simultaneously. This has the advantage of improving usability. For example, in a so-called two-family house, assuming that a doorphone child unit is individually installed at the outside entrance of the parent household and the outside entrance of the child household, in Embodiment 1, during a call with one doorphone child unit, the other Although it is not possible to make a call with the door phone slave unit and to view an image captured by the other door phone slave unit, in the present embodiment, an image that is individually and simultaneously communicated and captured by each door phone terminal device 2E. Can be seen. Moreover, as described in the first embodiment, even in the door phone terminal device 2E that is the voice terminal device 2, an alarm sound (voice message) can be sounded from the speaker 20b when an abnormality is detected by the detection device 4.

  A camera unit 28 that outputs a digital video signal may be used as the camera unit 28 of the door phone terminal device 2E, and a monitor unit 12 that can input a digital signal may be used as the monitor unit 12 of the base unit 1. Since the imaging to display can be performed by so-called full digital, there is an advantage that deterioration due to analog and digital signal conversion is eliminated.

  Here, as shown in FIG. 5, by simply connecting the connector of the functional module 108 to the connection port of the gate device 103, the power path and the information path of the functional module 108 can be secured at the same time. There is a wiring system that can be connected also to the gate device 103 and is excellent in workability. In this wiring system, one or a plurality of switch boxes 102 embedded and disposed at appropriate positions in a building are provided, and a power line 110 and an information line 111 that are wired in advance in a wall surface between the switch boxes 102 are sent and wired. At the same time, with respect to the switch box 102 at the starting end, a field line 110 drawn indoors through the main breaker MB and the branch breaker BB drawn into the wiring board 101, and a gateway 120 ( Information line 111 connected via a router and a hub is connected. It is also possible to incorporate the audio transmission system according to the present invention into such a wiring system.

1 is a system configuration diagram showing Embodiment 1 of the present invention. It is operation | movement explanatory drawing at the time of the extension call in the same as the above. It is operation | movement explanatory drawing of the detection apparatus same as the above. It is a system block diagram which shows Embodiment 2 of this invention. It is a system configuration diagram of a wiring system incorporating the same.

Explanation of symbols

1 Master unit (main unit)
2 Voice terminal device 4 Detection device 16 Control signal transmission processing unit 18 Control unit 19 Storage unit 40 Detection unit 41 Data communication unit 42 Control unit

Claims (6)

One or more voice input terminal devices provided with at least voice input means for inputting voice, one or more voice output terminal devices provided with voice output means for outputting at least voice, voice input terminal devices, and voice output terminals A voice transmission system comprising: a main device connected to the device via a signal line; and a time division multiplexing transmission of a voice signal from the voice input terminal device to the voice output terminal device via the main device,
It has one or more detection devices installed indoors to detect abnormalities such as fires and intruders,
The detection device includes detection means for detecting the abnormality, data communication means for performing data communication with the main device, and notification data for notifying abnormality detection when the abnormality is detected by the detection means. Means for transmitting to the main apparatus from the means, storage means for storing the encoded voice message data, and transmitting the voice message data stored in the storage means to the main apparatus from the data communication means Voice message registration means for allowing
The voice output terminal device comprises the voice output means and voice signal receiving means for receiving a voice signal transmitted in a downlink time slot via the signal line,
The main apparatus receives the audio signal transmitted by the audio input terminal device in the uplink time slot and transmits the audio signal to the audio output terminal device in the downlink time slot; and the detection Data communication means for performing data communication with the apparatus, storage means for storing the voice message data received by the data communication means, and transmission of the notification data when the notification data is received by the data communication means Control means for reading the voice message data sent from the original detection device from the storage means and causing the voice output terminal device to transmit to the voice signal transmission / reception means in a downlink time slot;
The voice output system, wherein the voice output terminal device causes a voice message corresponding to the voice message data received by the voice signal receiving means to ring from the voice output means. One or more voice input terminal devices provided with at least voice input means for inputting voice, one or more voice output terminal devices provided with voice output means for outputting at least voice, voice input terminal devices, and voice output terminals A voice transmission system comprising: a main device connected to the device via a signal line; and a time division multiplexing transmission of a voice signal from the voice input terminal device to the voice output terminal device via the main device,
It has one or more detection devices installed indoors to detect abnormalities such as fires and intruders,
The detection device includes detection means for detecting the abnormality, data communication means for performing data communication with the main device, and notification data for notifying abnormality detection when the abnormality is detected by the detection means. Means for transmitting to the main apparatus from the means, storage means for storing character data representing the contents of the voice message, and the character data stored in the storage means to the main apparatus from the data communication means Voice message registration means for sending,
The voice output terminal device comprises the voice output means and voice signal receiving means for receiving a voice signal transmitted in a downlink time slot via the signal line,
The main apparatus receives the audio signal transmitted by the audio input terminal device in the uplink time slot and transmits the audio signal to the audio output terminal device in the downlink time slot; and the detection Data communication means for performing data communication with the device, storage means for storing the character data received by the data communication means, and a sender of the notification data when the notification data is received by the data communication means The character data sent from the detection device is read out from the storage means, and the character data is converted into voice message data, and the voice output terminal device transmits the voice data to the voice signal transmitting / receiving means in a downlink time slot. Control means,
The voice output system, wherein the voice output terminal device causes a voice message corresponding to the voice message data received by the voice signal receiving means to ring from the voice output means. One or more voice input terminal devices provided with at least voice input means for inputting voice, one or more voice output terminal devices provided with voice output means for outputting at least voice, voice input terminal devices, and voice output terminals A voice transmission system comprising: a main device connected to the device via a signal line; and a time division multiplexing transmission of a voice signal from the voice input terminal device to the voice output terminal device via the main device,
It has one or more detection devices installed indoors to detect abnormalities such as fires and intruders,
The detection device includes detection means for detecting the abnormality, data communication means for performing data communication with the main device, and notification data for notifying abnormality detection when the abnormality is detected by the detection means. Means for transmitting to the main apparatus from the means, storage means for storing a selection code for selecting one voice message from a plurality of types of voice messages, and the selection code stored in the storage means for the data Control means for transmitting to the main device from the communication means,
The voice output terminal device comprises the voice output means and voice signal receiving means for receiving a voice signal transmitted in a downlink time slot via the signal line,
The main apparatus receives the audio signal transmitted by the audio input terminal device in the uplink time slot and transmits the audio signal to the audio output terminal device in the downlink time slot; and the detection Data communication means for performing data communication with the apparatus, storage means for storing a plurality of types of voice message data in association with selection codes, and notification data when the notification data is received by the data communication means The voice message data selected by the selection code sent from the detection device that is the transmission source of the voice signal is read from the storage means and transmitted to the voice signal transmitting / receiving means in the time slot in the downlink direction to the voice output terminal apparatus Control means,
The voice output system, wherein the voice output terminal device causes a voice message corresponding to the voice message data received by the voice signal receiving means to ring from the voice output means.   4. The control unit of the main apparatus causes a plurality of voice output terminal apparatuses to transmit the voice message data to the voice signal transmitting / receiving means in a downlink time slot. The voice transmission system described.   5. The voice transmission according to claim 4, wherein the control unit of the main unit causes the voice signal transmitting / receiving unit to transmit different types of voice message data to a plurality of groups including one to a plurality of voice output terminal devices. system. At least one of the plurality of audio input terminal devices or audio output terminal devices includes an imaging unit, a modulation unit that modulates video captured by the imaging unit, and a video signal modulated by the modulation unit as an audio signal Video signal transmitting means for transmitting in a frequency band different from the frequency band of
The main apparatus is a video signal receiving means for receiving the video signal transmitted by the audio input terminal apparatus or the audio output terminal apparatus, a demodulating means for demodulating the video signal received by the video signal receiving means, and demodulated by the demodulating means. The audio transmission system according to claim 1, further comprising display means for displaying an image.

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