JP2019192990A - Wireless intercom system - Google Patents

Abstract

To provide a wireless intercom system which enables information sharing among a calling slave unit, a responding slave unit, and other slave units in a simultaneous calling mode.SOLUTION: A wireless intercom system 1 comprises a main device 2 and a plurality of slave units 4 capable of communicating with the main device 2. Each of the slave units 4 includes a mode setting unit 42 for setting a communication mode with other slave units 4. A voice processing unit 23 includes a voice mixing unit 232 and a voice distributing unit 233. In a simultaneous conversation mode, the voice mixing unit 232 mixes conversation voices between a calling slave unit 4C and a responding slave unit 4A, and the voice distributing unit 233 distributes the mixed conversation voices to the calling slave unit 4C, the responding slave unit 4A, and the other slave units 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wireless intercom system that transmits an audio signal by wireless communication.

  A wireless intercom system is an intercommunication system in which a plurality of users can talk simultaneously, and is used in a premises having a wide space such as a broadcasting station, a concert hall, a theater, and a stadium. The wireless intercom system includes a main device, a plurality of parent devices connected to the main device, and a plurality of child devices connected to the parent device. Since each user has a slave as a mobile terminal, information transmission with high immediacy is realized on the premises as described above.

  For example, as shown in Patent Document 1, in an intercom system including a large number of slave units, a plurality of groups are provided with a group of several to ten slave units as one group. A conventional intercom system having a plurality of groups can be operated in three modes: intercom mode, individual call mode, and simultaneous call mode. The intercom mode is a simultaneous mutual call that covers a group formed by a plurality of slave units, and a plurality of slave units belonging to the same group can listen to the contents of calls of other slave units. On the other hand, the individual call mode is a mutual call by two slave units that is performed by designating a slave unit that is a call target, and even if the slave units are in the same group, the contents of the call cannot be heard. The simultaneous call mode refers to a slave unit that responds by calling a slave unit in multiple groups including its own group (hereinafter referred to as a responder unit including claims) Simultaneous mutual communication. In this case, only a call between a responding slave unit and a slave unit that has called (hereinafter referred to as a called slave unit including claims) is possible.

JP 2005-94419 A

  However, in the conventional intercom system having a plurality of groups, in the simultaneous call mode, the answering machine can only select either the intra-group call or the individual call mode for the call. Therefore, when the individual call mode is selected, a call is made only with the handset. That is, a call between the calling handset and the answering handset is not distributed to other handset. Therefore, even if it is a subunit | mobile_unit which belongs to the same group, it cannot receive the content of a call with the answering | recovery subunit | mobile_unit respond | corresponded to the calling subunit | mobile_call which made the simultaneous call, and a simultaneous call.

  Furthermore, in the prior art, while the other handset is responding to the calling handset that has issued the simultaneous call, the call between the other handset is in the intercom mode or the individual call mode. . For this reason, even the caller and answerer that have performed a general call cannot hear the conversation between the other slaves, and the call reflecting the call contents between the other slaves cannot be It was not possible to deploy between responder units.

  In this way, in the conventional intercom system with multiple groups, the information transmission between the slave units is not sufficient in the simultaneous call mode, and the information sharing with others, which is a feature of the intercom system, is fully demonstrated. There was a problem that could not.

  The present invention has been proposed in order to solve the above-described problems of the prior art, and in the simultaneous call mode, information is shared not only between the calling device and the answering device but also between other child devices. It is an object of the present invention to provide a wireless intercom system.

The wireless intercom system according to the present invention has the following configuration.
(1) A plurality of slave units that can communicate with the master unit and the master unit via the master unit.
(2) The handset includes a mode setting unit that sets an arbitrary mode from a plurality of modes including an individual call mode and a simultaneous call mode.
(3) The main device includes an audio processing unit,
(4) The voice processing unit
In accordance with the mode set by the mode setting unit, a response slave unit setting unit configured to set a response slave unit corresponding to the calling unit,
A voice mixing unit that mixes the call voice between the calling handset and the answering handset;
An audio distribution unit that selects the handset that is the target of the call distribution;
Is provided.
(5) In the simultaneous call mode, the voice mixing unit mixes the call voice between the calling unit and the answering unit, and the voice distribution unit sends the mixed call voice to the calling unit and the responder. Distributed to other machines and other slaves.

The following embodiments of the present invention are also included.
(1) The handset belongs to a group which is a set of a plurality of handset, and the other handset in the simultaneous call mode belongs to a group to which the calling handset and / or the answering handset belong. It is all handset.
(2) The other slave units in the simultaneous call mode are all slave units belonging to a group other than the group to which the call slave unit and the answering slave unit belong.

  As described above, the wireless intercom system of the present invention can share information without leakage between the caller, answerer, and other slaves in the simultaneous call mode.

It is a block diagram which shows the structure of the wireless intercom system in 1st Embodiment. It is a block diagram which shows the structure of the subunit | mobile_unit of 1st Embodiment. It is a block diagram which shows the structure of the main apparatus of 1st Embodiment. It is a block diagram which shows the structure of the audio | voice processing part of 1st Embodiment. It is a block diagram which shows the subunit | mobile_unit used as the delivery object of the synthetic | combination audio | voice signal in the audio | voice delivery part of 1st Embodiment. In 1st Embodiment, it is a flowchart which shows operation | movement of the wireless intercom system when a user selects simultaneous call mode in a subunit | mobile_unit. In 1st Embodiment, it is a flowchart which shows the procedure which sets the answering machine in simultaneous call mode. It is a block diagram which shows the subunit | mobile_unit used as the delivery object of the synthetic | combination audio | voice signal in the audio | voice delivery part of 2nd Embodiment.

  Hereinafter, embodiments of a wireless intercom system according to the present invention will be described with reference to the drawings.

[1. First Embodiment]
[1-1. Constitution]
[1-1-1. Overall system configuration]
As shown in FIG. 1, the wireless intercom system of the present embodiment includes a main device 2, a plurality of parent devices 3 connected thereto, and a plurality of child devices 4 connected to each parent device 3. Prepare. A plurality of slave units 4 are grouped under one master unit 3. In the present specification, “Slave unit 4” is used for the description of matters common to all the slave units, “Slave unit 4C” is used for specifying the calling side slave unit, and the responding slave unit is specified. In this case, it is described as “slave 4A”. Further, a group to which the child device 4C belongs is described as “group GC”, and a group to which the child device 4A belongs is described as “group GA”.

In the present embodiment, the main apparatus 2 controls calls between the plurality of slave units 4 via the master unit 3. A call between the plurality of slave units 4 has the following mode.
(1) An individual call mode in which a two-way simultaneous call is made between two slave units 4C and 4A on the calling side and the answering side.
(2) Intercom mode in which two-way simultaneous calls are made between all the slave units 4 in the group.
(3) When the calling handset 4C makes a call to the group GC to which the caller belongs and all the handset 4 in the other group, and the answering handset 4A responding to the call appears, the calling handset 4C and the response The handset 4A performs two-way simultaneous mutual communication, and the content of the call is distributed to the other handset 4 other than the group handset 4C and the other handset 4 other than the group GA responding handset 4A. In addition, a simultaneous call mode in which intra-group calls of the group GC and the group GA are distributed to the calling handset 4C and the answering handset 4A.

  In the simultaneous call mode of the present embodiment, a call between the calling handset 4C and the answering handset 4A is distributed to the other handset 4 of the group GC and the other handset 4 of the group GA. Here, the other handset means a handset other than the calling handset 4C and the answering handset 4A. Further, the other handset 4 of the group GC and the other handset 4 of the group GA enable a call within each group. The calling handset 4C and answering handset 4A can receive intra-group calls between other handset 4 performed in each group.

  The main device 2 establishes communication of audio signals and data signals between the slave units 4 via the master unit 3. The voice call between each slave unit 4 is distributed between the slave units 4 by a method corresponding to each mode. The data signal includes the group number and individual identification number of the slave unit 4 that has output the signal. The main device 2 refers to the group number or individual identification number of the slave unit 4 and distributes the audio signal to the slave unit 4 to be communicated.

  Base unit 3 is connected to main device 2 by wire. The number of parent devices 3 connected to the main device 2 can be set according to the size of the area where the wireless intercom system 1 is operated. In FIG. 1, all the parent devices 3 are connected to the main apparatus 2 by wire, but they are not necessarily connected by wire. The parent device 3 performs wireless communication with each child device 4. The wireless communication performed by the parent device 3 uses, for example, the 2.4 GHz band. Base unit 3 has a transmitter and a receiver for wireless communication (not shown). Base unit 3 transmits a signal including a voice signal and a data signal output from main device 2 to each slave unit 4 as a radio signal, and receives and receives a radio signal output from each slave unit 4 A signal is output to the main device 2.

  The subunit | mobile_unit 4 is equipped with the microphone used as the input part of an audio | voice signal, and the speaker used as the output part of an audio | voice signal. As shown in FIG. 1, a group G1 includes a slave unit 41a, a slave unit 41b,..., A group G2 includes a slave unit 42a, a slave unit 42b..., And a group G3 includes a slave unit 43a. 43b... And the group G4 includes the slave unit 44a, the slave unit 44b,. In this case, one group G1 may be provided in one parent device 3, or a plurality of groups G2 and G3 may be provided in one parent device 3. The user operates a switching unit (not shown) to set the group number of each child device 4 to determine which group each child device 4 belongs to.

[1-1-2. Configuration of slave unit]
FIG. 2 is a block diagram showing the configuration of the slave unit. As shown in FIG. 2, the handset 4 includes a group setting unit 41, a mode setting unit 42, a command transmission unit 43, a command reception unit 44, a ringing tone drive unit 45, a general call response button 46, and a general call end button 47. Is provided.

  The group setting unit 41 sets which group the handset 4 belongs to. The group setting unit 41 receives a user input via an interface (not shown) such as a touch panel, a dial, or a button, and selects a group to which the child device 4 belongs.

  The mode setting unit 42 receives user input via the interface and sets the communication mode of the slave unit 4. The mode setting unit 42 sets an arbitrary mode from a plurality of modes including three modes including an individual call mode, an intercom mode, and a simultaneous call mode, and performs an operation according to the mode.

  The command transmission unit 43 outputs a mode setting command, which is a command corresponding to the set mode, to the parent device 3 as a data signal. The data signal may be output to the parent device 3 with the audio signal input from the microphone. The mode setting command is an identifier indicating the type of mode set in the mode setting unit 42 and the group to which the handset 4 belongs. The command includes an identifier for identifying the child device 4.

  The mode setting unit 42 selects a mode according to the switching signal S from the command receiving unit 44 as well as the selection from the user. The command receiving unit 44 receives a data signal from the main device 2 via the parent device 3 and extracts a command signal included in the data signal. The command receiving unit 44 outputs a switching signal S based on the extracted command to the mode setting unit 42. Based on the switching signal S, the mode setting unit 42 switches between the individual call mode, the intercom mode, and the simultaneous call mode.

  When the setting of the mode setting unit 42 is switched to the simultaneous call mode based on the switching signal S, the mode setting unit 42 outputs a driving instruction to the ringing tone driving unit 45 and from the general call response button 46. The signal input is accepted. When a signal from the general call response button 46 is received, an input from the general call end button 47 is accepted.

  When there is an input from the general call response button 46 and the general call end button 47, the mode setting unit 42 generates a command corresponding to each input. That is, when there is an input from the general call response button 46, a general call response command that is a command indicating that there is an intention to respond to the general call is generated. When there is an input from the general call end button 47, a general call end command indicating that the response to the general call has ended is generated. The command generated by the mode setting unit 42 is output from the command transmission unit to the main apparatus 2.

[1-1-3. Configuration of main unit]
FIG. 3 is a block diagram showing the configuration of the main apparatus. As shown in FIG. 3, the main device 2 includes a command reception unit 21, a mode setting unit 22, a voice processing unit 23, and a command transmission unit 24.

  The command receiving unit 21 separates the audio signal and the data signal from the signals received by the parent device 3 and extracts the command signal included in the data signal. The command receiving unit 21 outputs a switching signal S to the mode setting unit 22 based on the extracted command signal.

  Based on the switching signal S, the mode setting unit 22 sets an arbitrary mode from a plurality of modes including three modes including an individual call mode, an intercom mode, and a simultaneous call mode.

The voice processing unit 23 performs the following operation according to the mode selected by the mode setting unit 22.
(1) Setting of answering machine (2) Voice mixing of calling machine-answering machine (3) Voice distribution of calling machine-answering machine (4) Call of other child machine to calling machine-answering machine Delivery

  In order to realize the operations (1) to (4), the voice processing unit 23 includes a responder set unit 231, a caller-response handset voice mixer 232, a caller as shown in FIG. 4. A voice distribution unit 233 that controls voice distribution between answering slave units and voice delivery between the calling slave unit and the answering slave units is provided.

When a new mode is set in the handset 4, the answering handset setting unit 231 sets the responding handset 4A that responds to the calling handset 4C that has issued the mode setting command. The setting of the response slave unit 4A in the response slave unit setting unit 231 is performed with reference to the identifier of the slave unit 4 that has issued the mode setting command and the identifiers of the other slave units 4. Specifically, it is as follows.
(1) Individual call mode For example, when the mode of the handset 41a is set to the individual call mode with the handset 43c, the answering handset setting unit 231 sets the handset 43c as the answering handset 4A.
(2) Intercom mode When the mode of the slave unit 41a belonging to the group G1 is set to the intercom mode, the response slave unit setting unit 231 responds to all the slave units 41a to 41n belonging to the group G1. Set as slave unit 4A.
(3) Simultaneous call mode When the mode of the handset 41a is set to the simultaneous call mode, the handset 41a becomes the calling handset 4C. The responding slave unit setting unit 231 sets the slave units 41a to 44n that can communicate with the main device 2 as the responding slave unit 4A, which is the slave unit 4 (for example, the slave unit 43c) that outputs a response command from the responding slave units. When setting the answering handset 4A, the command sending unit 24 transmits a command for sounding the ringing sound of the target handset 4 to the handset 41a to 44n that are the targets of a call with the calling handset 4C. In the handset 4 that has received the command, a ringing tone sounds and the user of the handset 43c presses the call response button 46. As a result, the slave unit 43c is set as the response slave unit 4A. After the answering handset 4A is set, the other handset 4 other than the calling handset 4C in the group GC, and the other handset 4 other than the answering handset 4A in the group GA, A mode is set in which a call can be made between the slave units 4.

  The voice mixing unit 232 refers to the identifiers of the calling handset 4C and the answering handset 4A that issued the mode setting command, and mixes the respective voice signals.

The voice delivery unit 233 delivers the synthesized voice signal to the calling handset 4C that issued the mode setting command and the target answering handset 4A. Specifically, it is as follows.
(1) Individual call mode For example, in an individual call between the child device 41a and the child device 43c, a mixed audio signal is distributed to the child device 41a and the child device 43c.
(2) Intercom mode When the intercom mode is set in the slave unit 41a, an audio signal is distributed to all the slave units 4 in the group to which the slave unit 41a that has set the intercom mode belongs. In the intercom call of the group G1, the audio signals of the child device 41a and the child device 41b are distributed to the child devices 41a to 41n belonging to the group G1.
(3) Simultaneous call mode In the simultaneous call mode, there are two stages of distribution. That is, there are a stage in which the handset 41a performs simultaneous calling as the calling handset 4C and a stage after the handset 43c is set as the answering handset 4A. As shown in FIG. 5 (a), at the stage of simultaneous calling, the voice signal from the calling device 41a is distributed to all groups of the child devices 41a to 44n that can communicate with the main apparatus 2. After the handset 43c is set as the answering handset 4A, as shown in FIG. 5B, the audio signal of the called handset 41a and the answering handset 43c is grouped to the handset 41a. The audio signal is distributed to the other child devices 4 of G1 and the other child devices 4 belonging to the group G3 to which the child device 43c belongs. On the other hand, the handset 4 other than the handset 41a in the group G1 and the handset 4 other than the handset 43c in the group G3 can make a call between the groups. The voice distribution unit 233 distributes a call between the groups of the group G1 and a call between the groups of the group G3 to the child device 41a and the child device 43c.

[1-2. Action]
An operation in the wireless intercom system 1 of the present embodiment having the above configuration will be described.

(1) Simultaneous Call Mode FIG. 6 is a flowchart showing an operation when the user selects the simultaneous call mode in the handset 4 in the wireless intercom system 1 in the present embodiment. First, the simultaneous call mode is selected in one of the handset 4 in the group G1 (S01). The simultaneous call mode is a mode that is selected when it is desired to communicate with another child device 4 beyond the group G1 to which the child device 4 belongs. If the handset 4 having selected the simultaneous call mode is the handset 41a in FIG. 1, the handset 41a becomes the calling handset 4C.

  Next, a mode setting command is output from the slave unit 41a to the main device 2 (S02). The mode setting command is attached with a data signal transmitted from the slave unit 41a to the main device 2 via wireless communication. Wireless communication between the slave unit 41 a and the main device 2 is performed via the master unit 3.

  The main device 2 receives the mode setting command included in the received data signal (S03). The command receiving unit 21 extracts a mode setting command in the data signal and outputs a switching signal S based on the extracted mode setting command to the mode setting unit 22. The main apparatus 2 selects an operation mode based on the switching signal S. The mode setting unit 22 switches the operation mode selection to the simultaneous call mode based on the switching signal S (S04).

  Next, the slave unit 43c corresponding to the mode selected by the main device 2 is set as the response slave unit 4A (S05). The response slave unit 4A is set by the response slave unit setting unit 231 of the voice processing unit 23.

  After the handset 4 responding to the simultaneous call is set, a voice call is established between the calling handset 4C and the answering handset 4A. The voice call is performed by mixing the voice signals transmitted to the main device 2 and distributing the mixed voice signals. In the case of the simultaneous call mode, the voice call between the handset 41a as the calling handset 4C and the handset 43c as the answering handset 4A is mixed (S06). Then, the mixed voice call is sent to the other handset 4 in the group G1 to which the handset 41a as the calling handset 4C belongs and to the other handset 4 in the group G3 to which the handset 43c as the calling handset 4A belongs. Then, it is distributed (S07).

  On the other hand, in the other handset 4 in the group G1 and the other handset 4 in the group G3, the call mode is set to intra-group call. Calls between other child devices 4 are not only distributed within each group, but also distributed to the child device 41a as the calling child device 4C and the child device 43c as the answering child device 4A (S08). .

  This simultaneous call mode by the calling handset 4C ends when the simultaneous calling end button is pressed in either the handset 41a that is the calling handset 4C or the handset 43c that is the calling handset 4A (S09).

(2) Setting of answering device in simultaneous call mode FIG. 7 is a flowchart showing the operation of the answering device setting unit 231 in the simultaneous call mode in the wireless intercom system 1 in the present embodiment.

  In the simultaneous call mode, the answering device setting unit 231 receives the setting instruction from the calling device 4C (S11), and sets the operation mode of the child device 4 to all the child devices 4 in the wireless intercom system 1. A code setting command for changing to the simultaneous call mode is transmitted (S12). The command signal is included in the data signal transmitted between the main device 2 and the slave unit 4 and transmitted to each slave unit 4.

  The command receiving unit 44 of each slave unit 4 extracts a mode setting command included in the received data signal. The command receiving unit 44 outputs a switching signal S based on the extracted mode setting command to the mode setting unit. Then, the mode setting unit changes the operation mode of the handset 4 to the simultaneous call mode based on the switching signal S (S14).

  When the operation mode is switched to the simultaneous call mode, the mode setting unit outputs a driving instruction to the ringing tone driving unit and drives the ringing tone driving unit 45 (S15). Moreover, the mode setting part 42 which output the drive instruction | indication with respect to the ringing tone drive part 45 receives the input from the simultaneous call response button 46 (S16). When the user presses the general call response button 46 (YES in S16), a signal generated by pressing the general call response button 46 is output to the mode setting unit 42. The mode setting unit 42 that has received an input from the general call response button 46 outputs a stop signal to the ringing tone drive unit 45 and transmits a general call response command to the main device 2 (S18). On the other hand, when the user does not press the simultaneous call response button 46 (NO in S16), the ringing tone drive unit 45 is continuously driven for a predetermined time, and when there is no response, the operation mode of the slave unit 4 is changed to the simultaneous mode. The mode before the call is made, for example, the intercom mode is shifted (S17).

  On the other hand, the command receiving unit 21 of the main device 2 extracts a general call response command from the data signal output from the handset 4 (S19). The identifier of the handset 4 is attached to the general call response command. If a general call response command is received from a plurality of slave units 4, the slave unit 4 that has transmitted the general call response command earliest is set as a response slave unit 4A (S20).

[1-3. effect]
The wireless intercom system 1 of the present embodiment as described above has the following effects.
(1) In the simultaneous call mode, the contents of the call between the calling handset 4C and the answering handset 4A are the same as the other handset 4 in the group GC to which the calling handset 4C belongs and the other in the group GA to which the answering handset 4A belongs. The call contents between the other child machines 4 of the group GC and the call contents between the other child machines 4 of the group GA are also shared by the calling handset 4C and the answering handset 4A. Therefore, we will provide a wireless intercom system that does not leak information.

(2) That is, in the wireless intercom system 1 of the present embodiment, the main device 1 makes a call between the calling handset 4C and the answering handset 4A in the simultaneous call mode, and the other handset 4 in the group GC. And a voice delivery unit 233 for delivering to the other handset 4 of the group GA. For this reason, in the conventional wireless intercom system 1, the communication contents that are not individually distributed to the calling handset 4C and the answering handset 4A are transferred to the other handset 4 in the group GC and the group GA. It is possible to listen to the other handset 4 as well. This makes it possible to share information within the wireless intercom system 1.

[2. Second Embodiment]
[2-1. Constitution]
Below, the wireless intercom system 1 which concerns on this embodiment is demonstrated, referring FIG. This embodiment has the same configuration as that of the first embodiment, but after setting the answering handset 4A, the call between the calling handset 4C and the answering handset 4A is distributed, and the call between the groups is sent to the answering handset 4A and the answering handset 4A. The other handset 4 to be distributed to the calling handset 4C is changed. In this embodiment, the other handset 4 is only the other handset 4 in the group GC to which the calling handset 4C belongs.

  The answering machine setting unit 231 of the present embodiment performs setting of the child machine 4A that responds to the calling handset 4C that has issued the mode setting command in the simultaneous call mode as follows. Also in this embodiment, the calling device is a child device 41a.

  In the simultaneous call mode, when the answering machine setting unit 231 sets the answering machine 43c responding to the calling answering machine 4C as the answering answering machine 4A, other answering machines in the group G1 other than the answering machine 41a that is the calling answering machine 4C. The mode of the device 4 is set to a mode in which a call can be made with the child device 4 in the group G1.

  As in the previous embodiment, as shown in FIG. 8A, at the stage where the slave unit 41a performs a general call as the call slave unit 4C, the voice delivery unit 233 includes all groups that can communicate with the main device 2. The mixed voice signal from the calling device 41a is distributed to the child devices 41a to 44n. After the handset 43c is set as the answering handset 4A, as shown in FIG. 8B, the audio signal of the called handset 41a and the responding handset 43c is grouped to the handset 41a. Deliver to other slave units 4 of G1. On the other hand, the other handset 4 other than the handset 41a of the group G1 enables a call between groups. The voice delivery unit 233 delivers a call between the groups of the group G1 to the handset 41a and handset 43c.

[2-2. Effect]
The wireless intercom system 1 of the present embodiment as described above has the following effects.

  The voice distribution unit 233 of the wireless intercom system 1 according to the present embodiment makes a call between the calling handset 4C and the answering handset 4A in the simultaneous call mode, and the other handset 4 of the group GC to which the calling handset 4C belongs. Deliver against. Therefore, in the conventional wireless intercom system 1, the contents of communication between the calling handset 4C and the answering handset 4A that have not been distributed can also be heard by other handset 4 other than the group handset 4C. Is possible. Further, it becomes possible to receive the intra-group call of the group GC at the calling handset 4C and the answering handset 4A. Thereby, information sharing within the wireless intercom system 1 can be achieved.

[3. Third Embodiment]
[3-1. Constitution]
The wireless intercom system 1 according to the present embodiment has the same configuration as that of the first embodiment, but distributes a call between the calling handset 4C and the answering handset 4A after the setting of the answering handset 4A. The other handset 4 to which the call is distributed to the answering handset 4A and the calling handset 4C is changed. In the present embodiment, the other handset 4 other than the handset 4 in the group GC to which the calling handset 4C belongs, the other handset 4 in the group GA to which the answering handset 4A belongs, other than the group GC and the group GA. It was set as the handset 4 in the group.

  The answering machine setting unit 231 of the present embodiment performs setting of the answering machine 4A that responds to the calling handset 4C that has issued the mode setting command in the simultaneous call mode as follows. Also in this embodiment, the calling device is a child device 41a.

  In the simultaneous call mode, when the answering machine setting unit 231 sets the answering machine 43c responding to the calling answering machine 4C as the answering answering machine 4A, other answering machines in the group G1 other than the answering machine 41a that is the calling answering machine 4C. It is possible to communicate with the slave unit 4 in each group in the mode of the slave unit 4 other than the group G1 and the group G3 in the group 4 of the unit 4 and the slave unit 43c which is the responding slave unit 4A. Set to mode.

  As in the previous embodiment, at the stage where the handset 41a performs a simultaneous call as the calling handset 4C, the voice distribution unit 233 mixes all the handset 41a to 44n of the groups that can communicate with the main device 2. The voice signal from the handset 41a is distributed. After the handset 43c is set as the answering handset 4A, the audio signal of the handed handset 41a and the handed handset 43c is sent to the other handset 4 other than the handset 41a and the handset 43c. And a group call between the child devices 4 in each group is distributed to the calling child device 4C and the answering child device 4A.

[3-2. Effect]
The wireless intercom system 1 of the present embodiment as described above has the following effects.

  The voice delivery unit 233 of the wireless intercom system 1 according to the present embodiment transmits a call between the calling handset 4C and the answering handset 4A in the simultaneous call mode to a child other than the calling handset 4C and the answering handset 4A. Deliver to the machine 4. Therefore, in the conventional wireless intercom system 1, the communication contents between the calling handset 4C and the answering handset 4A that are not distributed are transmitted to the other handset 4 other than the calling handset 4C and the answering handset 4A. It becomes possible to listen. In addition, it is possible to receive a group call between the slave units 4 in each group at the calling slave unit 4C and the answering slave unit 4A. Thereby, information sharing within the wireless intercom system 1 can be achieved.

[4. Other Embodiments]
In the present specification, a plurality of embodiments according to the present invention have been described. However, these embodiments are presented as examples and are not intended to limit the scope of the invention. Specifically, various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof, as long as they are included in the scope and gist of the invention.

  For example, as the first embodiment, the wireless intercom system 1 can select the individual call mode, the intercom mode, and the simultaneous call mode as the call mode, but is configured to be able to select other call modes. Also good. Further, the intercom mode is not necessarily required as the call mode. For example, the present embodiment can be applied to a wireless system having only the individual call mode and the simultaneous call mode.

DESCRIPTION OF SYMBOLS 1 ... Wireless intercom system 2 ... Main apparatus 21 ... Command receiving part 22 ... Mode setting part 23 ... Audio | voice processing part 24 ... Command transmission part 231 ... Responsive child machine setting part 232 ... Audio mixing part 233 ... Audio | voice delivery part 3 ... Parent Unit 4 ... Slave unit 4C ... Calling unit 4A ... Response subunit 41 ... Group setting unit 42 ... Mode setting unit 43 ... Command transmission unit 44 ... Command reception unit 45 ... Ringing sound drive unit 46 ... Simultaneous call response button 47 ... Simultaneous End call button

Claims (3)

A wireless intercom system comprising a main device and a plurality of slave devices capable of communicating with the main device via a master device,
The handset includes a mode setting unit for setting an arbitrary mode from a plurality of modes including an individual call mode and a simultaneous call mode,
The main device includes an audio processing unit,
The voice processing unit
In accordance with the mode set by the mode setting unit, a response slave unit setting unit configured to set a response slave unit corresponding to the calling unit,
A voice mixing unit that mixes the call voice between the calling handset and the answering handset;
An audio distribution unit that selects the handset that is the target of the call distribution;
With
In the simultaneous call mode, the voice mixing unit mixes the call voice between the calling handset and the answering handset, and the voice distribution unit sends the mixed call voice to the calling handset, the answering handset, and others. A wireless intercom system, which is distributed to any handset. The slave unit belongs to a group that is a set of a plurality of slave units,
2. The wireless intercom system according to claim 1, wherein the other slave units in the simultaneous call mode are all the slave units belonging to a group to which the call slave unit and / or the answering slave unit belongs. . The said other subunit | mobile_unit in the said simultaneous call mode is all the subunit | mobile_units which belong to groups other than the group to which the said calling subunit | mobile_unit and the said response subunit | mobile_unit belong, The Claim 1 or Claim 2 characterized by the above-mentioned. Wireless intercom system.

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