JP6418518B2 - Repeater and intercom system - Google Patents

Description

  The present invention generally relates to a repeater and an interphone system, and more particularly to a repeater and an interphone system that transmit and receive data between a base unit of the interphone system and an external device.

  In recent years, an adapter (repeater) that transmits and receives data between a base unit of an interphone system and a portable terminal (external device) has been proposed (see Patent Document 1).

  By using the adapter described in Patent Document 1, communication between the parent device and the portable terminal becomes possible. And interphone system users can use mobile devices to recognize who the customer is at home, or to know who the customer is without having to go to the location of the parent machine It can be performed.

JP 2011-114703 A

  By the way, the portable terminal can be carried anywhere. If you always have it in your home, you can handle a sudden visitor, but the user does not always have a mobile terminal without taking his skin off. Further, the location of the mobile terminal is not determined as compared with the stationary terminal. Therefore, if there is a sudden visitor and the user forgets where the mobile terminal is placed in the house, it is necessary to go to the place where the base unit is installed to handle the visitor. It is hard to say that communication with mobile terminals can be used effectively.

  Therefore, the present invention has been made in view of the above reasons, and an object of the present invention is to provide a repeater and an interphone system that allow a user to effectively use communication between a parent device and an external device.

The repeater of the present invention includes a main body unit having a communication processing unit that transmits and receives data between a base unit used in an interphone system and an external device, and a holding unit that holds the external device, and the communication processing A first communication unit that communicates with the parent device using a wired communication method as a first communication method; and a second communication unit that communicates with the external device using a second communication method different from the first communication method. and a communication unit, characterized in Rukoto.

  Moreover, the intercom system of the present invention includes the repeater and the master unit.

  According to the above configuration, the repeater and the interphone system can allow the user to effectively use communication between the parent device and the external device.

It is a figure explaining the repeater in embodiment. It is a figure explaining an example of the utilization form of the repeater in embodiment. It is a figure explaining the structure of the communication processing part in embodiment. FIG. 4A is a diagram illustrating the shape of the main body portion, and FIG. 4B is a diagram illustrating the shape of the holding portion. FIG. 5A is a perspective view illustrating a state in which the repeater is holding an external device, and FIG. 5B is a side view illustrating a state in which the repeater is holding an external device. It is a figure explaining the state with which components were mounted in the main-body part instead of the holding | maintenance part. It is a flowchart explaining the operation | movement of the repeater in embodiment, especially the operation | movement in the case of transmitting an instruction | indication signal. FIG. 8A is a diagram illustrating a state in which the holding unit in Modification 1 is housed in the main body, and FIG. 8B is a diagram illustrating a state in which the holding unit in Modification 1 is pulled out from the main body. FIG. 9A is a diagram illustrating a state in which the two first components of the holding unit in the first modification are rotated, and FIG. 9B is a diagram illustrating a state in which the repeater is holding an external device. It is a figure explaining the structure of the communication processing part in the modification 2. It is a flowchart explaining the operation | movement of the repeater in the modification 2, especially the operation | movement which communicates with an external device after transmitting a starting signal.

1. 1. Embodiment 1.1 Configuration A repeater according to the present embodiment is a device that receives data transmitted from a master unit used in an interphone system and transmits the data to an external device. Here, the external device is a portable terminal device having a communication function such as a tablet-type terminal device.

  The repeater 10 is a cellular phone adapter, for example, and includes a main body 20 and a holding unit 30 as shown in FIG.

  FIG. 2 is a diagram illustrating an interphone system using the repeater 10, and the interphone system includes the repeater 10, the wireless device 11, the parent device 40, the door phone child device 41, and the external device 50.

  As shown in FIG. 2, the repeater 10 is connected to the parent device 40 by a cable 61. The repeater 10 is connected to the wireless device 11 by, for example, an Ethernet (registered trademark) coaxial cable 62.

  For example, when the door phone slave unit 41 notifies a visitor to the master unit 40 via the cable 60, the master unit 40 outputs the notification to the repeater 10 via the cable 61.

  When the repeater 10 receives the notification of the visitor, the repeater 10 outputs the notification to the wireless device 11 via the coaxial cable 62. The wireless device 11 is a device that performs wireless communication with the external device 50. Upon receiving a notification of a visitor from the repeater 10, the wireless device 11 transmits the notification to the external device 50 by wireless communication.

  The external device 50 notifies the user when a notification of a visitor is received while dedicated application software for communicating with the parent device 40 is running. After the notification, the external device 50 communicates with the parent device 40 through the repeater 10 and the wireless device 11 by the user's operation. Specifically, the external device 50 receives the user's voice and transmits the received voice to the parent device 40 via the repeater 10 and the wireless device 11. When receiving the sound transmitted from external device 50, base unit 40 transmits the sound to door phone slave unit 41 via cable 60. The door phone slave unit 41 outputs the sound transmitted from the master unit 40.

  In the door phone slave unit 41, when the voice of the customer is input, the voice is output to the master unit 40 via the cable 60. When receiving the visitor's voice from the door phone slave unit 41, the base unit 40 transmits the voice to the external device 50 via the repeater 10 and the wireless device 11. The external device 50 outputs the voice of the visitor transmitted from the parent device 40.

  Thereby, the external device 50 enables communication with the door phone slave unit 41.

  When the interphone system is used in an apartment house, the doorphone cordless handset 41 is an interphone provided in the lobby (lobby interphone) or a master unit provided in the manager's room (administrator's room master unit). It may be. In this case, the external device 50 can communicate with the lobby intercom and the administrator room master unit.

  Hereinafter, each component (the main-body part 20, the holding | maintenance part 30) of the repeater 10 is demonstrated.

(1) Main unit 20
As shown in FIG. 1, the main body unit 20 includes a communication processing unit 21, a USB (universal serial bus) cable 22 (wired connection unit), a display unit 23, a detection unit 24, and an operation unit 25.

  As shown in FIG. 1, the communication processing unit 21 is provided inside the main body unit 20. As shown in FIG. 3, the communication processing unit 21 includes a first communication unit 101, a second communication unit 102, and a control unit 103.

  First communication unit 101 communicates with parent device 40 via cable 61. Specifically, the first communication unit 101 communicates with the parent device 40 by a communication method using the YUV signal (first communication method).

  The second communication unit 102 communicates with the wireless device 11 via the coaxial cable 62. Specifically, the second communication unit 102 is externally connected via the wireless device 11 by a second communication method different from the first communication method (here, a communication method according to the Ethernet (registered trademark) standard). Communicate with the device 50.

  The control unit 103 controls communication between the parent device 40 and the external device 50. Specifically, the control unit 103 performs protocol conversion between the network from the door phone slave unit 41 to the repeater 10 and the network from the repeater 10 to the external device 50. The control unit 103 stores the IP address of the external device 50. When the first communication unit 101 receives the data transmitted from the parent device 40, the control unit 103 transfers the stored IP address to the wireless device 11 via the second communication unit 102 as a destination. In addition, when the control unit 103 receives data from the second communication unit 102, the received data is transmitted via the first communication unit 101 when the IP address of the data transmission source matches the stored IP address. Transfer to base unit 40.

  The control unit 103 controls the display unit 23 so as to notify the user of the operation state of the main body unit 20.

  When the control unit 103 detects that the external device 50 is held by the detection unit 24 described later, the control unit 103 sends an instruction signal for instructing the activation of the dedicated application software to the external device 50 via the USB cable 22 described later. Send. The dedicated application software is application software that performs processing equivalent to processing such as communication, telephone call, and image display performed by the parent device 40 with the door phone child device 41.

  The external device 50 is a computer that includes a processor and a memory. The memory is a computer-readable storage medium, and the dedicated application software is realized by a processor executing a program stored in the memory. For example, the external device 50 receives a voice by executing a program stored in the memory, and transmits the voice to the door phone slave unit 41 via the repeater 10 and the master unit 40, or the door phone slave unit 41 receives the voice. Call processing for outputting voice can be realized. As the external device 50, for example, a mobile phone, a tablet personal computer, a notebook personal computer, or the like can be used.

  The control unit 103 performs control according to an operation by the user using the operation unit 25.

  When one end of the USB cable 22 is connected to the connection port of the USB cable of the external device 50, power is supplied from a power supply unit (not shown) to the external device 50. In addition, the instruction signal output from the control unit 103 is output to the external device 50.

  The USB cable 22 may be attached so that it cannot be detached from the main body 20 of the repeater 10. Alternatively, a USB connector adapter may be provided in the main body 20 and the USB cable 22 having the USB connector may be detachable.

  The display unit 23 is, for example, an LED (Light Emitting Diode) lamp, and notifies the user of the operating state of the main body unit 20 by the lighting color of the LED lamp. For example, red lighting indicates a state where communication is not possible, and green lighting indicates a state where communication is possible.

  In addition, you may provide a some LED lamp as the display part 23, and alert | report the operation state of the main-body part 20 to a user by the difference in LED to light. Alternatively, a display such as a liquid crystal or an organic EL may be provided as the display unit 23, and the operation state of the main body unit 20 may be notified to the user according to the display content.

  The detection unit 24 is, for example, a reflective proximity sensor, and detects whether or not the external device 50 is held by a holding unit 30 described later. Specifically, the detection unit 24 detects that the external device 50 is held by the holding unit 30 by projecting light and receiving reflected light.

  The operation unit 25 is a power switch, a setting button, an operation lever, a touch panel, or the like, for example, and is covered with the holding unit 30 when the detachable holding unit 30 is attached to the main body unit 20.

  Here, the shape of the main body 20 will be described. As shown in FIGS. 1 and 4A, the main body 20 is formed in an L-shaped three-dimensional shape. Specifically, the main body 20 is formed in a shape in which two rectangular parallelepiped shapes (first rectangular parallelepiped and second rectangular parallelepiped) having different lengths in the front-rear direction are combined. Here, the dimension in the front-rear direction of the first cuboid is longer than the dimension in the front-rear direction of the second cuboid, and forms the upper part of the main body part 20, and the second cuboid forms the lower part of the main body part 20.

  A step is formed by the length in the front-rear direction of the upper portion and the lower portion of the main body portion 20 being different. A holding portion 30 to be described later is attached so as to face the surface 20a that is the entire surface of the second rectangular parallelepiped where the step is formed.

(2) Holding unit 30
The holding unit 30 is a table on which the external device 50 is placed, and is attached so as to face the lower portion of the main body unit 20, specifically, the surface 20 a on which a step is formed.

  The shape of the holding | maintenance part 30 is demonstrated with reference to FIG. 1 and FIG. 4B.

  As shown in FIGS. 1 and 4B, in the holding portion 30, a support wall 30b is provided on the front side of the rectangular parallelepiped surface 30a having a long side in the left-right direction, and a mounting wall 30c is provided on the rear side along the left-right direction. Yes. Here, the vertical dimension of the support wall 30b is shorter than the vertical dimension of the mounting wall 30c. Thereby, when the load is applied to the holding part 30, the load applied to the mounting wall 30c can be reduced. Moreover, in the holding part 30, the groove part 30d is formed along the left-right direction by providing the support wall 30b and the attachment wall 30c on the surface 30a. Here, the support wall 30b is formed in a rectangular parallelepiped shape having a long side in the left-right direction, and is provided to prevent the external device 50 from being detached from the holding unit 30 when the external device 50 is held (supported). The attachment wall 30 c is formed in a rectangular parallelepiped shape having a long side in the left-right direction, and is provided for attaching the holding part 30 to the main body part 20.

  The user can place the external device 50 on the surface 30 a along the groove 30 d formed in the holding unit 30.

  FIG. 5A shows a state in which the external device 50 is held, and FIG. 5B is a side view in that state.

  As shown in FIGS. 5A and 5B, the external device 50 is placed on the surface 30 a along the groove 30 d of the holding unit 30. At this time, even if the external device 50 is placed on the surface 30a along the groove portion 30d, the holding device 30 prevents the external device 50 from being detached from the holding portion 30 by the support wall 30b that forms the groove portion 30d. Can be held (supported).

  The holding unit 30 can be attached to and detached from the main body 20 by sliding it in the right direction or the left direction by a slide rail (not shown) provided on the surface 20 a of the main body 20.

  When the user attaches the holding part 30 to the main body part 20, the user attaches the attachment wall 30c of the holding part 30 by sliding from the left end of the face 20a to the right or from the right end of the face 20a to the left. When the holding unit 30 is not used, that is, when the external device 50 is not held, a rectangular parallelepiped component 31 is mounted instead of the holding unit 30 (see FIG. 6).

1.2 Operation Here, the operation of the repeater 10, particularly the operation in the case of transmitting an instruction signal, will be described with reference to the flowchart shown in FIG. When the external device 50 is held by the holding unit 30, it is assumed that the main body unit 20 and the external device are connected via the USB cable 22.

  The detection unit 24 detects whether or not the holding unit 30 holds the external device 50 (step S5).

  When the detection unit 24 detects that the holding unit 30 holds the external device 50 (“Yes” in step S5), the control unit 103 determines whether the value of the flag is 0 (step S10). ). Here, the flag represents whether or not the instruction signal needs to be transmitted. When the flag value is 0, the instruction signal needs to be transmitted. When the flag value is 1, the instruction signal does not need to be transmitted.

  When the control unit 103 determines that the flag value is not 0 (“No” in step S10), the process returns to step S5.

  When determining that the value of the flag is 0 (“Yes” in step S10), the control unit 103 transmits an instruction signal to the external device 50 via the USB cable 22 (step S15).

  After transmitting the instruction signal, the control unit 103 changes the flag value to 1 (step S20). Then, the process returns to step S5.

  When the detection unit 24 detects that the holding unit 30 does not hold the external device 50 (“No” in Step S5), the control unit 103 determines whether or not the flag value is 1 (Step S5). S25).

  When determining that the value of the flag is 1 (“Yes” in step S25), the control unit 103 changes the value to 0 (step S30). A process will return to step S5, if step S30 is performed.

  If the control unit 103 determines that the flag value is not 1 (“No” in step S25), the process returns to step S5.

2. Modification 1
Here, the modification of the holding | maintenance part 30 is demonstrated with reference to FIG. 8A, 8B, 9A, 9B. In the above description, the holding unit 30 can be attached to and detached from the main body unit 20.

  In this modification, the same components as those described above are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  The holding unit 30 according to the present modification includes two first parts 35 and one second part 36.

  Each first component 35 is connected to the lower end of the main body 20 by a spring (not shown). Each first part 35 is formed in an L shape and is housed inside the main body 20 by the elastic force of a spring acting downward when not used (see FIGS. 8A and 8B).

  The second component 36 is formed in a rectangular parallelepiped shape and includes the display unit 23. The second component 36 is slidable in the forward direction by the slide rail, and is housed in the lower end portion of the main body 20 when not used (see FIGS. 8A and 8B).

  When using the holding unit 30, the user pulls out the two first components 35 upward and the second component 36 forward (see FIG. 8B). And each 1st component 35 is rotated so that the front-end | tip part 30e of each 1st component 35 pulled out upwards may face the front (refer FIG. 9A).

  The external device 50 is mounted between the distal end portion 30e of each first component 35 and the second component 36 drawn from the lower end portion of the main body portion 20. Then, since the elastic force of the spring works downward, the external device 50 is held (supported) between the tip 30e of each first component 35 and the second component 36 (see FIG. 9B).

  In the above embodiment, the display unit 23 is provided on the side surface of the main body unit 20, and in the present modification, the installation position of the display unit 23 provided in front of the second component 36 is limited to these positions. Is not to be done. When the external device 50 is held by the holding unit 30, the display unit 23 may be provided at a position where the user can visually recognize the display unit 23. Here, the visually recognizable position is a position where the display unit 23 is not covered with the external device 50 when the holding unit 30 holds the external device 50.

  Further, the number of the first parts 35 is not limited to two, and may be one, or may be three or more.

3. Modification 2
In the above, the repeater 10 and the wireless device 11 are separate devices, but here, the repeater 10 having the function of the wireless device 11 will be described.

  In this modification, the same components as those described above are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  In this modification, the configuration of the communication processing unit 21, particularly the configuration of the second communication unit 102, is different from the above.

  As illustrated in FIG. 10, the second communication unit 102 of the present modification includes a wired communication unit 110 and a wireless communication unit 111.

  The wired communication unit 110 communicates with the external device 50 via the USB cable 22 when the external device 50 is connected to the main unit 20 via the USB cable 22. The wireless communication unit 111 performs wireless communication with the external device 50 when the external device 50 is not connected to the main body unit 20 via the USB cable 22.

  In the present modification, the above-described second communication method corresponds to wireless communication and communication via the USB cable 22.

  The control unit 103 performs protocol conversion between the network from the door phone slave unit 41 to the repeater 10 and the network from the repeater 10 to the external device 50. When the external device 50 is connected to the main unit 20 via the USB cable 22, the control unit 103 transmits and receives data between the parent device 40 and the external device 50 via the wired communication unit 110. Do. When the external device 50 is not connected to the main unit 20 via the USB cable 22, the control unit 103 transmits and receives data between the parent device 40 and the external device 50 via the wireless communication unit 111. Do.

  In addition, when data is transmitted to the external device 50 via the wireless communication unit 111, the control unit 103 performs wireless communication so as to change the strength of the signal to be transmitted according to the detection result of the detection unit 24. The unit 111 is controlled. Specifically, when the detection unit 24 detects that the holding unit 30 does not hold the external device 50, the wireless communication unit 111 is controlled so that the intensity of the signal to be transmitted is set to the first level. When the detection unit 24 detects that the holding unit 30 holds the external device 50, the wireless communication unit 111 is controlled so that the intensity of the signal to be transmitted is set to a second level lower than the first level. . In this case, it is possible to suppress the wireless signal transmitted to the external device 50 from becoming an obstacle to communication with other devices.

  Next, the operation of the repeater 10 in this modification, particularly the operation of transmitting an instruction signal, will be described with a focus on the changes from FIG.

  In this modification, the operation in step S15 shown in FIG. 7 is different from the above. Specifically, when the main unit 20 is connected to the external device 50 via the USB cable 22, the control unit 103 transmits an instruction signal to the external device 50 via the wired communication unit 110. When the main unit 20 is not connected to the external device 50 via the USB cable 22, the control unit 103 transmits an instruction signal to the external device 50 via the wireless communication unit 111. Furthermore, when transmitting the instruction signal wirelessly, when the detection unit 24 detects that the holding unit 30 does not hold the external device 50, the control unit 103 sets the signal strength of the instruction signal to the first level. The wireless communication unit 111 is controlled to do so. When transmitting the instruction signal wirelessly, the control unit 103 sets the signal strength of the instruction signal to the second level when the detection unit 24 detects that the holding unit 30 holds the external device 50. The wireless communication unit 111 is controlled.

  Next, the operation of the repeater 10 in this modification, particularly the operation of communicating with the external device 50 after transmitting the activation signal will be described with reference to the flowchart shown in FIG.

  The detection unit 24 detects whether or not the holding unit 30 holds the external device 50 (step S100).

  When the detection unit 24 detects that the holding unit 30 holds the external device 50 (“Yes” in step S100), the control unit 103 is connected to the external device 50 via the USB cable 22 in the main body unit 20. It is determined whether or not (step S105).

  When determining that it is connected via the USB cable 22 (“Yes” in step S105), the control unit 103 communicates with the external device 50 via the wired communication unit 110 (step S110).

  When the detection unit 24 detects that the holding unit 30 does not hold the external device 50 ("No" in step S100), the control unit 103 communicates with the external device 50 with the first level signal strength. The wireless communication unit 111 is controlled (step S115).

  When determining that it is not connected via the USB cable 22 (“No” in step S105), the control unit 103 communicates with the external device 50 at the second level signal strength. Is controlled (step S120).

4). Other Modifications Although the present invention has been described based on the embodiment and each modification, the present invention is not limited to the above-described embodiment. For example, the following modifications can be considered.

  (1) Although the detection unit 24 is a reflective proximity sensor in the above embodiment and each modification, it is not limited to this.

  Another type of proximity sensor such as an inductive proximity sensor or a capacitive proximity sensor may be used.

  Or the detection part 24 is not limited to a proximity sensor. For example, the detection unit 24 may be a mechanical switch. The detection unit 24 (mechanical switch) determines that the holding unit 30 holds the external device 50 when in the on state, and does not hold the external device 50 when in the off state. Judge.

  Alternatively, the detection unit 24 may determine whether or not the holding unit 30 holds the external device 50 by detecting whether or not the USB cable 22 is connected to the external device 50. In this case, when the detection unit 24 detects that the USB cable 22 is connected to the external device 50, the detection unit 24 determines that the holding unit 30 holds the external device 50. When the detection unit 24 detects that the USB cable 22 is not connected to the external device 50, the detection unit 24 determines that the holding unit 30 does not hold the external device 50.

  (2) The USB cable 22 described in the above embodiment and each modified example may perform at least one of power supply to the external device 50 and communication with the external device 50 after the dedicated application software is activated.

  For example, when the USB cable 22 is only supplying power in the second modification, the repeater 10 operates as follows. When it is detected in step S100 in FIG. 11 that the holding unit 30 holds the external device 50 (“Yes” in step S100), the control unit 103 determines whether the second device has the signal strength of the second level. The wireless communication unit 111 is controlled to perform communication (step S120).

  (3) You may combine the said embodiment and modification.

5. Summary As described above, the repeater 10 holds the main body unit 20 having the communication processing unit 21 that transmits and receives data between the parent device 40 and the external device 50 used in the interphone system, and the external device 50. The holding part 30 is provided.

  According to this configuration, the user does not forget where the external device 50 is placed in the home by holding the external device 50 in the repeater 10, and the external device 50 is used as if using the parent device 40. The device 50 can be used. Thereby, the repeater 10 can make a user use effectively communication between a main | base station and an external device.

  Here, the communication processing unit 21 communicates with the first communication unit 101 that communicates with the parent device 40 using the first communication method, and with the external device 50 using a second communication method that is different from the first communication method. The second communication unit 102 is preferably included.

  According to this configuration, the repeater 10 transmits data between the parent device 40 and the external device even when the communication protocol with the parent device 40 and the communication protocol with the external device 50 are different. Can be sent and received.

  Here, the repeater 10 further includes a USB cable 22 (wired connection unit) that is wired to the external device 50, and the main body unit 20 supplies power to the external device 50 via the USB cable 22 and the external device 50. It is preferable to perform at least one of the communications with.

  According to this configuration, the repeater 10 can perform power supply to the external device 50 and communication with the external device 50 via the USB cable 22. For example, when power is supplied, the external device 50 is used while receiving power.

  Here, it is preferable that the repeater 10 includes a display unit 23 that displays the operation state of the main body unit 20 at a position where the user can visually recognize the external device 50 held by the holding unit 30.

  According to this configuration, the repeater 10 allows the user to check the operation state of the main body unit 20 even when the holding unit 30 holds the external device 50.

  Here, it is preferable that the repeater 10 further includes a detection unit 24 that detects whether or not the external device 50 is held by the holding unit 30.

  According to this configuration, the repeater 10 detects whether or not the external device 50 is held by the detection unit 24, and thus can control the external device 50 according to the detection result.

  Here, when the detection unit 24 detects the holding unit 30 holding the external device 50, the communication processing unit 21 transmits an instruction signal for starting an application for performing communication with the parent device 40 to the external device 50. It is preferable to do.

  According to this configuration, the repeater 10 transmits an activation signal to the external device 50 when the detection unit 24 detects the holding unit 30 holding the external device 50. As a result, the external device activates the application. Therefore, when the external device 50 is held by the holding unit 30, the user moves the external device 50 to the parent device 40 without performing an operation related to activation of the application. It can be used with the same feeling.

  Here, the main body unit 20 further includes an operation unit 25, the holding unit 30 is detachable from the main body unit 20, and when the holding unit 30 is attached to the main body unit 20, the operation unit 25 is the holding unit. 30 is preferable.

  According to this configuration, the repeater 10 can prevent the operation unit 25 from being erroneously operated when the holding unit 30 is attached to the main body unit 20.

  Here, when the external device 50 is not held by the holding unit 30, the holding unit 30 is preferably housed in the main body unit 20.

  According to this structure, the repeater 10 can maintain the external appearance by accommodating the holding part 30 in the main body part 20.

  In addition, the intercom system includes any one of the repeaters 10 and the parent device 40.

  According to this configuration, the user does not forget where the external device 50 is placed in the home by holding the external device 50 in the repeater 10, and the external device 50 is used as if using the parent device 40. The device 50 can be used. Thereby, the intercom system can allow the user to effectively use communication between the parent device and the external device.

10 repeater 20 body part 21 communication processing part 22 USB cable (wired connection part)
23 display unit 24 detection unit 25 operation unit 30 holding unit 40 parent device 50 external device 101 first communication unit 102 second communication unit

Claims (8)

A main unit having a communication processing unit for transmitting and receiving data between a master unit and an external device used in the intercom system;
A holding unit for holding the external device ,
The communication processing unit
A first communication unit that communicates with the parent device using a wired communication method as a first communication method; and a second communication unit that communicates with the external device using a second communication method different from the first communication method; repeater, characterized in that it comprises a.   Furthermore, a wired connection unit for wired connection with the external device is provided,
  The main body performs at least one of power supply to the external device and communication with the external device via the wired connection unit.
  The repeater according to claim 1.   A display unit that displays an operation state of the main body unit at a position where a user can visually recognize the external device in a state where the external unit is held by the holding unit.
  The repeater according to claim 1 or claim 2, wherein   Furthermore, a detection unit that detects whether or not the external device is held by the holding unit is provided.
  The repeater as described in any one of Claim 1 thru | or 3 characterized by the above-mentioned.   When the holding unit detects that the holding unit holds the external device, the communication processing unit transmits an instruction signal for starting an application for performing communication with the parent device to the external device.
  The repeater according to claim 4.   The main body further includes an operation unit,
  The holding part is detachable from the main body part, and when the holding part is attached to the main body part, the operation part is covered with the holding part.
  The repeater according to any one of claims 1 to 5, wherein the repeater is provided.   When the external device is not held by the holding unit, the holding unit is stored in the main body unit.
  The repeater according to any one of claims 1 to 5, wherein the repeater is provided.   The relay device according to claim 1, and the master device.
  Interphone system characterized by that.

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