JP6697694B2 - Intercom communication equipment, indoor intercom equipment, intercom system - Google Patents

Description

The present invention relates to an intercom system including an intercom communication device installed in a dwelling unit in an apartment, an indoor intercom device, an indoor intercom device, and an outdoor intercom device.

  In recent years, an intercom system in which a camera is mounted on an outdoor intercom device installed in a lobby or a door and a video image of a visitor can be confirmed on a monitor of the intercom device in the room has become widespread. A type that is equipped with a large-screen color liquid crystal display and can display visitors' images clearly is also on sale.

JP, 2003-323685, A

  When a large display is mounted on the intercom device, the visibility of the image is improved, but the intercom device becomes large, which makes it more noticeable in the room.

  The present invention has been made in view of such a situation, and an object thereof is to provide a technique for making an intercom device in a room compact and inconspicuous.

  In order to solve the above problems, an indoor intercom apparatus according to an aspect of the present invention transmits and receives an audio signal to and from an outdoor intercom apparatus, and an outdoor communication unit that receives a video signal imaged by the outdoor intercom apparatus. An indoor communication unit that transmits the video signal received by the outdoor communication unit to a registered video display device by wire communication. The outdoor intercom device is not equipped with a monitor.

  It should be noted that any combination of the above constituent elements and one obtained by converting the expression of the present invention among methods, devices, systems, etc. are also effective as an aspect of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the intercom apparatus in a room can be reduced in size and can be made inconspicuous.

It is a figure which shows the structure of the intercom system which concerns on embodiment of this invention. It is a block diagram which shows the structure of the lobby intercom apparatus of FIG. 1, an indoor intercom apparatus, and a television apparatus. 6 is a flowchart showing an example of processing from calling to starting a call in the intercom system according to the embodiment of the present invention. It is a block diagram for explaining an example in case a plurality of television sets are installed in a dwelling unit. It is a figure which shows the structure of the intercom system (a hands-free terminal device is included) which concerns on embodiment of this invention.

  FIG. 1 is a diagram showing a configuration of an intercom system 1 according to an embodiment of the present invention. In this embodiment, it is assumed that the intercom system 1 is installed in a condominium. The intercom system 1 includes a lobby intercom device 10, an indoor intercom device 20, a television device 30, a door intercom device 50, and a control device 60.

  The lobby intercom device 10 is an outdoor intercom device installed in a lobby, and a visitor inputs a room number to call the visited indoor intercom device 20. The control device 60 is installed in a common space such as a machine room or a manager's room. The control device 60 relays a signal between the lobby intercom device 10 and the indoor intercom device 20. The door intercom device 50 is installed at the entrance of the dwelling unit. The indoor intercom device 20 and the television device 30 are installed in a dwelling unit.

  Although only one dwelling unit is shown in FIG. 1 for simplification, a large number of dwelling units actually exist, and the control device 60 relays between the plurality of indoor intercom devices 20 and the lobby intercom device 10. Further, the control device 60 is connected to a distribution board and various sensors, and when an abnormality such as a fire occurs, an alert signal is transmitted to the indoor intercom device 20 of each dwelling unit.

  FIG. 2 is a block diagram showing the configurations of the lobby intercom device 10, the indoor intercom device 20, and the television device 30 of FIG. In FIG. 2, the control device 60 as a relay device is ignored in order to simplify the description.

  The lobby intercom device 10 includes an imaging unit 11, an operation unit 12, a transmission/reception unit 13, a control unit 14, and a communication unit 15. The transmitting/receiving unit 13 includes a microphone 13a and a speaker 13b. The indoor intercom apparatus 20 includes an operation unit 22, a transmission/reception unit 23, a control unit 24, and a communication unit 25. The transmitting/receiving unit 23 includes a microphone 23a and a speaker 23b. The communication unit 25 includes an outdoor communication unit 25a and an indoor communication unit 25b. The television device 30 includes a speaker 33, a control unit 34, a communication unit 35, an infrared light receiving unit 36, and a display unit 38. A remote control device 37 is attached to the television device 30.

  The image pickup unit 11 of the lobby intercom apparatus 10 is for photographing a visitor and includes a solid-state image pickup element such as a CCMOS image sensor or a CCD image sensor. The solid-state image sensor outputs the photoelectrically converted video signal to the control unit 14.

  The operation unit 12 is a user interface for accepting operations of visitors. Specifically, it is provided with a numeric keypad button for inputting a room number and a call button. The handset 13 is a user interface for a visitor to talk with a resident. The microphone 13a collects the voice of the visitor, converts it into an electric signal, and outputs the electric signal to the control unit 14. The speaker 13b reproduces the audio signal acquired from the indoor intercom apparatus 20 and outputs the audio signal. The control unit 14 controls the entire lobby intercom device 10. The communication unit 15 is a communication interface for transmitting and receiving a video signal and an audio signal to and from the indoor intercom device 20. The video signal is one-way communication from the lobby intercom device 10 to the indoor intercom device 20.

  The operation unit 22 of the indoor intercom apparatus 20 is a user interface for receiving the operation of the resident. Specifically, a call button and an unlock button are provided. In addition, an emergency button, a warning sound stop button, etc. can be provided. The transmitting/receiving unit 23 is a user interface for a resident to talk with a visitor. The microphone 23a collects the voice of the resident, converts it into an electric signal, and outputs it to the control unit 24. The speaker 23b reproduces the voice signal acquired from the lobby intercom device 10 and outputs the voice signal.

  In the present embodiment, it is assumed that a hands-free call is made without providing a receiver. By using the high-sensitivity microphone 23a and the speaker 23b, a call can be made at a position away from the indoor intercom apparatus 20.

  The control unit 24 controls the entire indoor intercom apparatus 20. The outdoor communication unit 25a is a communication interface for transmitting and receiving a video signal and an audio signal to and from the lobby intercom device 10. The indoor communication unit 25b is a communication interface for transmitting the video signal acquired from the lobby intercom device 10 to the television device 30.

  The communication unit 35 of the television device 30 is a communication interface for receiving a video signal from the indoor intercom device 20. For example, the indoor intercom device 20 and the television device 30 are connected by a wireless LAN, a wired LAN, and an HDMI (registered trademark) cable. Alternatively, PLC (Power Line Communication) may be used. When the wireless LAN router is installed in the room and the television device 30 is already wirelessly connected to the router, the indoor intercom device 20 and the television device 30 are wirelessly connected by wirelessly connecting the indoor intercom device 20 to the router. Can be connected.

  The display unit 38 reproduces the video signal supplied from the control unit 34 and displays an image. The speaker 33 reproduces the audio signal supplied from the control unit 34 and outputs the audio signal. The infrared light receiver 36 receives an infrared signal from the remote controller 37 and outputs it to the controller 34.

  The control section 24 of the indoor intercom apparatus 20 executes bidirectional communication of control signals with the television apparatus 30 via the indoor communication section 25b. As the control signal, for example, a power supply control signal of the television device 30 can be transmitted/received. When the television device 30 is a model having a browser function, the browser controls transmission/reception of control signals. In the case of a model that does not have a browser function, an adapter device that controls transmission/reception of control signals to/from the indoor intercom device 20 may be externally attached. In the following description, it is assumed that the television device 30 has a browser function. The control signal may be communicated on a channel different from that of the video signal. For example, the control signal may be infrared communication.

  The control unit 24 of the indoor intercom apparatus 20 periodically acquires the power state of the television device 30 from the control unit 34 of the television device 30. The power state includes an on state and an off state. There are also models that have a standby state.

  When the call signal is received from the lobby intercom apparatus 10 via the outdoor communication section 25a, the control section 24 of the indoor intercom apparatus 20 turns on the television via the indoor communication section 25b when the power of the television apparatus 30 is off or in the standby state. A control signal for instructing power-on is transmitted to the device 30.

  The resident listens to the ringing sound output from the speaker 23b of the indoor intercom apparatus 20, watches the image of the visitor displayed on the television apparatus 30, and determines whether or not to respond. When answering, the call (listening) button provided on the operation unit 22 of the indoor intercom apparatus 20 is pressed to start the call. When inviting visitors to the dwelling unit, unlock it by pressing the unlock button.

  In order to deal with the above, the resident needs to go to the place where the indoor intercom device 20 is installed. When watching the television device 30 in the living room, it is more convenient to be able to respond while staying in the living room. Hereinafter, a method for enabling a call to be answered in a room in which the television device 30 is installed will be described. First, an application program that enables the remote control device 37 to respond to a call is installed in the television device 30.

  When the call signal is received from the indoor intercom apparatus 20, the control unit 34 of the television device 30 causes the display unit 38 to display the call button icon and the unlock button icon. The resident can operate the remote controller 37 to perform a call start operation. In addition, an unlocking operation can also be performed. Further, when no response is made, the operation of erasing the image of the visitor displayed on the display unit 38 can be performed. When the control unit 34 receives a call start operation signal or an unlock operation signal from the remote control device 37 via the infrared light receiving unit 36, the control unit 34 transmits a control signal based on the operation signal to the indoor intercom apparatus 20. Upon receiving the control signal for instructing the call start from the television device 30, the control unit 24 of the indoor intercom device 20 establishes a call channel between the lobby intercom device 10 and the indoor intercom device 20. Residents then call hands-free with visitors in the lobby.

  Further, in order to eliminate the need to go to the place where the indoor intercom apparatus 20 is installed, the resident may be able to operate the indoor intercom apparatus 20 by voice recognition. Upon receiving the call signal from the lobby intercom apparatus 10, the control unit 24 of the indoor intercom apparatus 20 transitions to the voice recognition mode. When the resident speaks in this state, the microphone 23a acquires a voice and outputs it to the control unit 24. When the control unit 24 compares the voice data acquired by the microphone 23a with the voice data registered in advance (for example, the voice data of a phrase such as "Yes" or "please open"), and the matched voice data exists. , Execute the operation associated with the voice data.

  FIG. 3 is a flowchart showing an example of processing from calling to the start of a call in intercom system 1 according to the embodiment of the present invention. When the visitor presses the call button of the lobby intercom apparatus 10 in the lobby (Y of S10), a call signal is transmitted to the indoor intercom apparatus 20. The control unit 24 of the indoor intercom apparatus 20 confirms the power state of the television apparatus 30 (S11). When the power is off or in the standby state (N in S11), the control unit 24 transmits a control signal instructing the television device 30 to turn on the power (S12).

  When the power of the television device 30 is on (Y in S11) or after the television device 30 is powered on in response to the control signal, the control unit 24 of the indoor intercom device 20 is transmitted from the lobby intercom device 10. The video signal of the visitor is transferred to the television device 30 (S13). The control unit 24 of the indoor intercom apparatus 20 transfers the video signal and also transmits the control signal for causing the television apparatus 30 to output the ringing sound from the speaker 33 (S14).

  This control signal does not send the voice data of the ringing tone, but is a reproduction instruction signal of the voice data of the ringing tone which is held in the television device 30 in advance. The ringing tone output from the television device 30 and the ringing tone output from the indoor intercom device 20 may both be output, or either one may be output.

  The control unit 24 of the indoor intercom apparatus 20 waits for a call start operation (S18) until the set period elapses after the ringing tone sounds (N in S15). When the set period has elapsed without performing the call start operation (Y in S15, N in S18), the control unit 24 confirms whether or not the power of the television device 30 is turned on by activating the process of step S12 ( S16). When the process of step S12 has been activated (Y of S16), the control unit 24 transmits a control signal instructing the television device 30 to turn off the power or to stand by (S17). Since the resident is in the absence or is not watching the television device 30, it is better to turn off the power of the television device 30 or set it to the standby state after the lapse of the set period. On the other hand, if the process of step S12 has not been activated (N of S16), the process of step S17 is skipped. This is the case when the resident is watching the television device 30 but does not respond intentionally, and it is better not to automatically turn off or put on standby the television device 30.

  When the call start operation is performed before the set period elapses after the ringing tone sounds (N in S15) (Y in S18), the control unit 24 of the indoor intercom apparatus 20 causes the call channel with the lobby intercom apparatus 10 to operate. Is established (S19).

  In the description so far, it is assumed that one TV device 30 is installed in the dwelling unit, but a plurality of TV devices 30 may be installed in the dwelling unit.

  FIG. 4 is a block diagram for explaining an example in which a plurality of television devices 30 are installed in a dwelling unit. FIG. 4 illustrates an example in which the first television device 30a and the second television device 30b are installed in the room A, the third television device 30c is installed in the room B, and the fourth television device 30d is installed in the room D. There is.

  A television device 30 that transmits a video signal of a visitor is registered in advance in the control unit 24 of the indoor intercom device 20. Normally, all the television devices 30 installed in the dwelling unit are registered so that the resident in any room can confirm the face of the visitor. In addition, it is possible to register a specific television device 30 that transmits a video signal after starting a call. Usually, the television device 30 installed at the position closest to the position where the indoor intercom device 20 is installed is registered. In the example shown in FIG. 4, the first television device 30a installed at the position closest to the indoor intercom device 20 is registered.

  Further, the television device 30 that receives a call start instruction or an unlock operation instruction can be registered. Other television devices 30 can display images, but operations such as starting a call from the remote control device 37 are invalid. That is, the control unit 24 of the indoor intercom apparatus 20 validates the call start operation signal or the unlock operation signal from the registered TV apparatus 30 among the plurality of TV apparatuses 30 in the dwelling unit, and the TV apparatus that is not registered. The call start operation signal or unlock operation signal from 30 is invalidated. In this case, it is possible to prevent the call start operation from being performed by the remote control device 37 attached to the television device 30 installed in the room where the voice cannot reach the microphone 23a. When a call start operation is performed with the remote controller 37, it is necessary to move to a position where a hands-free call is possible.

  The control unit 24 of the indoor intercom apparatus 20 transmits the video signal acquired from the lobby intercom apparatus 10 to all the registered television apparatuses 30 via the indoor communication unit 25b. When the call start operation is started, the video signal is transmitted to one registered television device 30, and the transmission of the video signal to another television device 30 is invalidated. In this processing example, it is assumed that one television device 30 that transmits a video signal is registered after the start of a call. Note that it is also possible to register a plurality of television devices 30 that transmit video signals after the call is started. When the video signal is transmitted via the wireless LAN, a control signal for instructing another television device 30 not to receive the video signal is transmitted.

  In addition, when the control unit 24 receives a call start operation signal from any one of the television devices 30, it transmits the video signal to the television device 30 and invalidates the transmission of the video signal to the other television device 30. In this processing example, it is assumed that one television device 30 that transmits a video signal is not registered after the call is started. That is, it is assumed that a plurality of television devices 30 can perform a call start operation. In any case, it can be estimated that the resident who has performed the call start operation is watching the image of the visitor on the television device 30 paired with the remote control device 37 on which the operation was performed. Therefore, it can be determined that the video transmission to the other television device 30 is unnecessary, and the video transmission to the other television device 30 is terminated after the call start operation is performed.

  In the description so far, it is assumed that the resident uses the handset 23 of the indoor intercom apparatus 20 to make a hands-free call, but when the indoor intercom apparatus 20 and the resident are far apart from each other, a voice is heard. Sometimes it doesn't arrive. For example, a typical example is a case where the entrance where the indoor intercom apparatus 20 is installed and the living room where the TV apparatus 30 is installed are separated from each other. As a countermeasure, a hands-free terminal device 40 independent of the indoor intercom device 20 is installed on the wall of the room where the television device 30 is installed.

  FIG. 5 is a diagram showing a configuration of the intercom system 1 (including the hands-free terminal device 40) according to the embodiment of the present invention. The intercom system 1 shown in FIG. 5 has a configuration in which a handsfree terminal device 40 is added to the intercom system 1 shown in FIG. The hands-free terminal device 40 includes a highly sensitive microphone and a speaker. The hands-free terminal device 40 is connected to the indoor intercom device 20 by wire or wirelessly. The hands-free terminal device 40 does not have a receiver and a monitor, unlike a handset for an intercom base unit. It is a small device that can be embedded in a wall. In the present embodiment, it is assumed that the television device 30 is embedded and installed in the wall of the room in which it is installed.

  The control unit 24 of the indoor intercom apparatus 20 transmits the audio signal acquired from the lobby intercom apparatus 10 to the handsfree terminal apparatus 40 installed in the room, and transmits the audio signal acquired from the handsfree terminal apparatus 40 to the lobby intercom apparatus 10. Send. The handset 23 installed in the main body of the indoor intercom apparatus 20 and the hands-free terminal device 40 can be selectively used depending on the place where the call start operation is performed.

  When the call button installed on the operation unit 22 of the indoor intercom apparatus 20 is pressed, the control unit 24 enables the handset unit 23 installed in the main body of the indoor intercom apparatus 20 and disables the hands-free terminal device 40. .. On the other hand, when a call start operation is performed on the remote control device 37 of the television device 30, the control unit 24 invalidates the transmitter/receiver unit 23 mounted on the main body of the indoor intercom device 20 and validates the hands-free terminal device 40. ..

  It is also possible to design the indoor intercom device 20 without the handset 23. In this case, the call button and the unlock button can be omitted. Since the monitor, the microphone, the speaker, the call button, and the unlock button are not mounted, the indoor intercom apparatus 20 can be significantly downsized. Alternatively, the indoor intercom device 20 itself may be installed on the wall of the room where the television device 30 is installed without providing the hands-free terminal device 40.

  Although the processing between the lobby intercom apparatus 10 and the indoor intercom apparatus 20 has been described above, the same processing can be performed between the door intercom apparatus 50 and the indoor intercom apparatus 20. Even with the intercom system 1 installed in an apartment house, the lobby intercom apparatus 10 may not be provided in a small-sized condominium or apartment. On the contrary, depending on the construction of the condominium, the door intercom device 50 may not be provided.

  In the above description, the intercom system 1 installed in a condominium has been described, but the same applies to the intercom system 1 installed in a detached house. In the intercom system 1 installed in a detached house, the lobby intercom device 10 and the control device 60 are not provided. All the processing in the above description is performed between the door intercom apparatus 50 and the indoor intercom apparatus 20.

  As described above, according to the present embodiment, since the monitor is not mounted on the indoor intercom apparatus 20, it is possible to reduce the size and make it inconspicuous. Further, since the monitor is not mounted, the entire interior intercom device 20 can be colored in any color, and the interior can be made uniform. In addition, the cost can be reduced by not mounting the monitor. If a warning lamp (for example, an LED lamp) is installed without installing a monitor, it is possible to pass the certification prescribed by the Fire Department.

  In addition, among electronic devices, the television has the highest penetration rate and can effectively use existing devices. No intercom slave as a dedicated machine is required. In addition, the screen of a TV is larger than that of a PC or tablet, so it is easy to check the images of visitors. In addition, the remote control operation of the TV has little resistance to the elderly and is easily accepted by the elderly.

  The present invention has been described above based on the embodiment. It is understood by those skilled in the art that the embodiments are exemplifications, that various modifications can be made to the combinations of the respective constituent elements and the respective processing processes, and that the modifications are within the scope of the present invention. ..

  For example, when the indoor intercom device 20 and the television device 30 are not connected, the control unit 24 of the indoor intercom device 20 may notify the resident that the television device 30 is not connected. For example, the LED lamp is turned on or a message is sent from the speaker 23b. As a result, it is possible to prevent the state in which the connection between the indoor intercom apparatus 20 and the television apparatus 30 is released without the resident's knowledge.

  Further, when the television device 30 is not connected to the indoor intercom device 20, the control unit 24 does not transfer the video signal acquired from the lobby intercom device 10 to the television device 30. Thereby, the power consumption of the indoor communication unit 25b can be reduced. Especially when wireless is used, the effect of saving power consumption becomes large.

  Further, when the television device 30 is not connected to the indoor intercom device 20, the control unit 24 does not output the ringing sound from the speaker 23b. If the video of the visitor cannot be confirmed, it is possible to set not to respond to the visitor.

  When the television device 30 is not connected to the indoor intercom device 20, the control unit 24 instructs the lobby intercom device 10 to output a fixed message such as "please wait for a while" from the speaker 13b. In this case, the visitor can wait until the television device 30 is connected to the indoor intercom device 20.

  Further, when the television device 30 is not connected to the indoor intercom device 20, the control unit 24 transmits information indicating that the television device 30 is not connected to the control device 60. The control device 60 does not relay the video signal acquired from the lobby intercom device 10 to the indoor intercom device 20, when the television device 30 is not connected to the indoor intercom device 20. The audio signal is relayed as usual. As a result, the traffic volume of the trunk line connecting the control device 60 and the indoor intercom device 20 can be reduced.

  When the resolution of the image pickup unit 11 of the lobby intercom device 10 and the resolution of the display unit 38 of the television device 30 are different, the control unit 24 converts the resolution of the video signal acquired from the lobby intercom device 10 into the resolution of the display unit 38. To the television device 30. By transmitting an image corresponding to the monitor size to the television device 30, it is possible to suppress the occurrence of display defects such as screen shift.

  The indoor intercom apparatus 20 may include a recording medium (for example, SSD or HDD) for recording the video signal acquired from the lobby intercom apparatus 10 when the resident is not present. When the reproduction instruction operation is performed after the resident has returned home, the control unit 24 reads the video signal from the recording medium and transfers it to the television device 30. This allows the resident to check the video of the visitor when he/she is not present.

  In the above description, the example in which the indoor intercom apparatus 20 uses the television apparatus 30 as a transfer destination for transferring the video signal acquired from the lobby intercom apparatus 10 has been described. In this respect, the television device 30 is not limited as long as it is an image display device having a display capable of displaying an image. A PC (may be a desktop type or a notebook type), a tablet, a smartphone, a portable game machine, or a portable music player can be used as a video display device of a transfer destination. A projection-type video display device such as a projector can also be used as the transfer destination video display device. When a wall or the like is used as a projection surface, the projection surface can be used as a normal wall when the projection type image display device is not used, so that the indoor space can be effectively utilized. Also, various types of video display devices can be registered in the indoor intercom device 20 as transfer destinations. For example, the living room can be registered as a television device, the study as a PC, and the child room as a portable game machine.

  DESCRIPTION OF SYMBOLS 1 intercom system, 10 lobby intercom device, 11 imaging part, 12 operation part, 13 transmission/reception part, 13a microphone, 13b speaker, 14 control part, 15 communication part, 20 indoor intercom device, 22 operation part, 23 transmission/reception part, 23a microphone, 23b speaker, 24 control unit, 25 communication unit, 25a outdoor communication unit, 25b indoor communication unit, 30 television device, 33 speaker, 34 control unit, 35 communication unit, 36 infrared light receiving unit, 37 remote control device, 38 display Part, 40 hands-free terminal device, 50 door intercom device, 60 control device.

  INDUSTRIAL APPLICATION This invention can be utilized for the intercom system installed in a condominium.

Claims (6)

An outdoor communication unit that transmits and receives an audio signal to and from an outdoor intercom device, and receives a video signal imaged by the outdoor intercom device,
An indoor communication unit that transmits the video signal received by the outdoor communication unit to a registered video display device by wired communication;
It is configured to be connected to the video display device by wire in a state of being installed separately from the video display device,
The indoor communication unit is configured to, when the outdoor communication unit receives a call signal, transmit a signal for canceling a power-off or standby state of the video display device to the video display device,
An intercom communication device, which is not equipped with a monitor. An intercom system comprising an outdoor intercom device and an intercom communication device,
The outdoor intercom device,
An imaging unit for shooting visitors,
A handset to talk to residents
A communication unit for transmitting a video signal to the intercom communication device and transmitting and receiving an audio signal to and from the intercom communication device,
The intercom communication device is
An outdoor communication unit for receiving a video signal from the outdoor intercom device and transmitting and receiving an audio signal to and from the outdoor intercom device,
An indoor communication unit that transmits the video signal acquired from the outdoor intercom device to a registered video display device by wired communication,
It is configured to be connected to the image display device by wire in a state of being installed separately from the image display device,
The indoor communication unit is configured to, when the outdoor communication unit receives a call signal, transmit a signal for canceling a power-off or standby state of the video display device to the video display device,
An intercom system that is not equipped with a monitor. An intercom system comprising an outdoor intercom device, a communication device for interphone without a monitor, and a handsfree terminal device without a monitor and capable of handsfree communication,
The outdoor intercom device,
An imaging unit for shooting visitors,
A handset to talk to residents
A communication unit for transmitting a video signal to the intercom communication device and transmitting and receiving an audio signal to and from the intercom communication device,
The intercom communication device is
An outdoor communication unit for receiving a video signal from the outdoor intercom device and transmitting and receiving an audio signal to and from the outdoor intercom device,
The video signal acquired from the outdoor intercom device is transmitted to the video display device by wired communication, and the audio signal acquired from the outdoor intercom device is transmitted to the hands-free terminal device installed indoors by wired communication. An indoor communication unit that receives a voice signal from a hands-free terminal device,
An intercom system, wherein the intercom system is configured to be wiredly connected to the video display device and the hands-free terminal device separately from each other. An outdoor communication unit that transmits and receives an audio signal to and from an outdoor intercom device, and receives a video signal imaged by the outdoor intercom device,
An indoor communication unit that transmits a video signal received by the outdoor communication unit to a registered video display device via a wireless LAN router;
The indoor communication unit is configured to, when the outdoor communication unit receives a call signal, transmit a signal for canceling a power-off or standby state of the video display device to the video display device,
An intercom communication device, which is not equipped with a monitor. An intercom communication device according to claim 1 or 4,
Mike
When the outdoor communication unit receives a call signal, transition to a voice recognition mode, based on a predetermined phrase obtained by the microphone, a control unit configured to control the response operation,
Indoor intercom device equipped with. The intercom communication device is included in an indoor intercom device,
The indoor intercom device,
Mike
When the outdoor communication unit receives a call signal, transition to a voice recognition mode, based on a predetermined phrase acquired by the microphone, a control unit configured to control the response operation,
The intercom system according to claim 2 or 3, further comprising:

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