JP6063814B2 - Intercom system - Google Patents

Description

  The present invention relates to an interphone system having an interphone slave unit having a calling / calling function and a plurality of interphone master units having a calling function, in which devices are connected via a communication network.

2. Description of the Related Art Conventionally, there is an interphone system that includes an interphone slave unit having a calling / call function and a plurality of interphone master units having a call function, and devices are connected to each other via a communication network such as a LAN. In such an intercom system, when multiple interphone master units are called at the same time, video signals and audio signals are transmitted via a common transmission line, so that delays and errors due to increased traffic are prevented. In order to reduce the amount of data to be transmitted, a device for reducing the amount of data to be transmitted was made.
For example, in Patent Document 1, the number of links on the LAN is counted, and the frame rate of the video signal to be transmitted is changed according to the number of links.

JP 2013-46233 A

The technique of Patent Document 1 is effective when the number of links increases, but in a system including a plurality of interphone master units via a communication network, the amount of communication is temporarily reduced even when a call is made before a link is formed. May increase. This is when the interphone master unit of the call destination is set to transfer due to the absence of the responder, etc., and when all of the call destinations are set to transfer and all of the transfer destinations are set, call all at once. Therefore, the number of call signals generated on the communication network temporarily becomes a large value.
Therefore, an unexpected problem may occur at the time of calling, and the technique of Patent Document 1 is insufficient to solve such a situation.

  Therefore, in view of such problems, the present invention has an object to provide an intercom system capable of smoothly calling a call even when the call is transferred in a configuration in which a plurality of interphone master units are connected via a communication network. It is said.

In order to solve the above-mentioned problem, an invention according to claim 1 is an interphone system in which an interphone slave unit having a calling / calling function and a plurality of interphone master units having a calling function are connected via a communication network. The interphone slave unit transmits a call signal to a plurality of interphone master units all at once, and transmits a two-way audio signal to and from the interphone master unit that has responded. and a call destination storage unit that stores a group of the called intercom master unit to call, the call destination storage section, the normal call destination group calling in the normal state and the transfer callee group call forwarding settings when are stored, the handset call control unit, when either the intercom master unit in the normal call destination group is switched to the transfer settings, through the call destination to recognize the switching And switches from the call destination group on transfer callee group.
According to this configuration, when one interphone master unit is set for transfer, other interphone master units in the same group are also regarded as transfer settings in the interphone slave unit, and the call destination is switched to the transfer call destination group. Therefore, the maximum value of the number of call signals at the time of transfer is determined by the number of interphone master units in the group stored in the interphone slave unit, and the call signal is unexpectedly set as in the conventional case where the transfer destination is set in each interphone master unit. It is possible to prevent a situation where the communication capacity is over due to congestion.
The communication network is a WAN such as the Internet or a telephone network, or a LAN provided in a region such as a building.

According to a second aspect of the present invention, in the configuration according to the first aspect, when the call destination of the interphone slave unit is switched to the transfer call destination group, the call control unit applies to each interphone master unit belonging to the normal call destination group. The interphone master unit that transmits the notification signal notifying that the switching has been performed and has received the notification signal has a display unit that displays that the switching is set to the transfer setting.
According to this configuration, when the transfer setting is made, it is displayed on the display unit of the intercom master unit belonging to the normal call group, so that the related parties such as the operator can recognize that the transfer setting has been made.

According to a third aspect of the present invention, in the configuration according to the first or second aspect, the interphone master unit of the normal call destination group returns the call destination of the interphone slave unit from the transfer call destination group to the normal call destination group. It is characterized by having.
According to this configuration, the interphone master unit belonging to the normal call destination group is convenient because the transfer setting can be canceled even if it is not the interphone master unit for which the transfer setting operation has been performed.

According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, when the interphone master unit common to both the normal call destination group and the transfer call destination group is registered, the slave unit call control unit If a transfer operation is performed on a common interphone master unit, the interphone master unit is excluded from the transfer call destination group until the transfer setting is canceled, and the call signal is not transmitted even if the interphone slave unit receives the call operation. It is characterized by that.
According to this configuration, when the transfer setting is made in the interphone master unit registered in both the normal call destination group and the transfer call destination group, the interphone master unit is excluded from the transfer destination. No ringing tone is reported even when a call operation is performed. Therefore, the operator can easily recognize that the transfer setting has been made.

  According to the present invention, when at least one interphone master unit is set for transfer, other interphone master units constituting the call destination group are also switched to transfer setting in the interphone slave unit. Therefore, the maximum value of the number of call signals at the time of transfer is determined by the number of interphone master units in the group stored in the interphone slave unit. It is possible to prevent a situation where the communication capacity is over due to congestion.

It is a block diagram which shows an example of the intercom system which concerns on this invention. It is a table | surface figure of the callee group which an intercom cordless handset memorize | stores. It is a display explanatory drawing of the display part of an intercom main unit. It is a table | surface figure which shows the other example of a callee group.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an example of an intercom system according to the present invention, and shows main devices in a circuit block diagram. As shown in FIG. 1, an interphone slave unit (hereinafter simply referred to as “slave unit”) 1 and a plurality of interphone master units (hereinafter simply referred to as “master unit”) 2 are connected via a communication network 3. It is connected.
FIG. 1 shows a configuration in which six master units 2 (first master unit 2a, second master unit 2b,..., Sixth master unit 2f) are connected. The communication network 3 refers to a WAN such as the Internet or a telephone network, or a LAN.

The handset 1 includes a call button 11 that a visitor performs a call operation, a camera 12 for capturing an image of the visitor, a microphone 13 and a speaker 14 for making a call, a handset memory 15 that stores the called base unit 2, a handset A slave unit CPU 16 that controls the entire unit 1, a slave unit communication IF 17 connected to a communication network for communicating with the master unit 2, and the like are provided.
The slave unit memory 15 stores two groups: a group of the master unit 2 that is normally called and a group of the master unit 2 that is called when the transfer is set.

  The base unit 2 has a call button 21 for responding to a call, a microphone 22 and a speaker 23 for making a call, a switch button 24 for switching to transfer settings, a display unit 25 for displaying captured images of the camera 12, and various operations. Are provided with an operation unit 26 including a touch panel provided on the display unit 25, a parent CPU 27 for controlling the entire parent device 2, a parent device communication IF 28 connected to the communication network 3 for communicating with the child device 1, and the like. .

The operation of the intercom system configured as described above is as follows. First, a case where the call destination groups before transfer setting and after transfer setting do not overlap will be described.
For example, a group of the master unit 2 as shown in FIG. 2 is registered in the slave unit memory 15. In FIG. 2, in the normal call, the first to third parent devices 2a to 2c registered before "switching" are called, and after the transfer setting, the fourth to sixth parent devices 2d to 2f registered after "switching". Shows the state set to call.

Specifically, when the call button 11 is pressed in the normal state, a call signal is transmitted to the first to third parent devices 2a to 2c all at once under the control of the child device CPU 16, and the captured image of the camera 12 is similarly displayed. 1 to the third base unit 2a to 2c.
The base unit 2 that has received the call signal receives a ringing sound from the speaker 23 under the control of the base unit CPU 27, and the received image of the camera 12 is displayed on the display unit 25. In this state, for example, when the call button 21 of the first parent device 2a is operated, a communication path is formed with the child device 1, and a call can be made between the visitor and the responder.
Further, the slave CPU 16 that has detected the formation of the communication path continues to transmit the video signal only to the first master unit 2a that has operated the call button 21, and transmits the video signal to the second and third master units 2b and 2c. To stop.

  Thereafter, when the responder operates the call button 21 of the first base unit 2a again to end the call, a call end signal is transmitted from the base unit CPU 27 to the handset 1, and the communication path is disconnected. Further, the slave CPU 16 that has received the call end signal stops the transmission of the video signal to the first master 2a.

On the other hand, when any one of the first to third parent devices 2a to 2c is pressed in a standby state that is not in the calling / calling state, the parent device CPU 27 transmits a transfer setting signal to the child device 1. Then, the slave unit 1 that has received the transfer setting signal sets the destination of the call signal to the group of the master unit 2 shown in “After switching” in FIG.
In addition, the slave CPU 16 that has received the transfer setting signal transmits a transfer transition signal (notification signal) to the first to third parent devices 2a to 2c, which are normal call destinations, and receives the transfer transition signal. The parent device 2 displays on the display unit 25 that it has shifted to the transfer state.
FIG. 3 shows the display of the display unit 25, which indicates that the transfer setting has been made by “switching”, and the recovery button 26a for canceling the transfer setting and recovering to the normal state is displayed as “recovery”. Is displayed on the touch panel.

When the call button 11 is pressed in the state where the transfer is set, the slave CPU 16 transmits a call signal to the fourth to sixth master units 2d to 2f described in the “after transfer” column of FIG. Similarly, the captured image of the camera 12 is transmitted to the fourth to sixth master units 2d to 2f. The base unit 2 that has received the call signal receives a ringing sound from the speaker 23 under the control of the base unit CPU 27, and the received image of the camera 12 is displayed on the display unit 25.
In this state, for example, when the call button 21 of the fourth parent device 2d is operated, a communication path is formed with the child device 1, and a call can be made between the visitor and the responder. The slave CPU 16 that has detected the formation of the communication path continues to transmit the video signal only to the fourth master unit 2d that has operated the call button 21, and transmits the video signal to the fifth and sixth master units 2e and 2f. To stop.

Thereafter, when the responder operates the call button 21 of the fourth parent device 2d again to end the call, a call end signal is transmitted from the parent CPU 27 to the child device 1, and the call path is disconnected. Further, the slave CPU 16 that has received the call end signal stops the transmission of the video signal to the fourth master 2d.
When the recovery button 26a displayed on any one of the display units 25 of the first to third parent devices 2a to 2c is touched in the standby state, the transfer setting is canceled and the normal state is restored.

As described above, when one parent device 2 is set for transfer, the other parent device 2 in the same group is also switched to transfer setting in the child device 1. Therefore, the maximum value of the number of paging signals at the time of transfer is determined by the number of master units 2 constituting the group stored in the slave unit 1, and unexpectedly as in the conventional case where the transfer destination is set in each master unit 2. It is possible to prevent a situation where the call capacity is congested and the communication capacity is over.
In addition, when the transfer setting is made, it is displayed on the display unit 25 of the base unit 2 belonging to the normal calling group, so that an operator or other related person can surely recognize that the transfer setting has been made.
Furthermore, since the parent device 2 belonging to the normal call destination group can cancel the transfer setting even if it is not the parent device 2 that has performed the transfer setting operation, it is convenient.

Next, an operation in the case where the parent device 2 common to both before and after the transfer setting is registered and the call destinations are duplicated will be described. FIG. 4 shows an example of overlapping stored in the handset memory 15, in which two units, the second base unit 2b and the third base unit 2c, overlap. Hereinafter, the operation will be described focusing on transfer switching.
In the standby state, for example, when the switching button 24 of the second parent device 2b is pressed, the parent device CPU 27 transmits a transfer setting signal to the child device 1, and the child device 1 that has received the transfer setting signal transmits a call signal. The destination is changed to the group of base unit 2 shown in “after switching” in FIG.

In addition, the slave CPU 16 that has received the transfer setting signal transmits a transfer transition signal (notification signal) to the first to third parent devices 2a to 2c, which are normal call destinations, and receives the transfer transition signal. In the first to third parent devices 2a to 2c, the screen as shown in FIG.
The slave CPU 16 temporarily excludes the second master unit 2b for which the transfer setting operation has been performed from the transfer destination in this case because it is also set as the transfer destination as shown in FIG. Similarly, when the transfer is set in the third parent device 2c, the third parent device 2c is temporarily excluded from the transfer destination.

When the call button 11 is pressed in the state where the transfer is set, the slave CPU 16 excludes the second to sixth master devices 2b to 2f described in the “after transfer” column of FIG. The calling signal is transmitted to the third to sixth parent devices 2c to 2f excluding the second parent device 2b, and the captured image of the camera 12 is transmitted to the third to sixth parent devices 2c to 2f together with the display unit 25. An image is displayed.
For the second master unit 2b that has been switched to the transfer setting and the first master unit 2a that is not the call destination after the transfer setting, the screen as shown in FIG. Is displayed. The exclusion operation of the second master unit 2b is reset when the restoration button 26a is operated to cancel the transfer setting.

  The restoration operation can be performed from any of the first to third master units 2a to 2c. Further, when a transfer setting operation is performed from the first master unit 2a that is not set as a transfer destination, it is the same as in the above embodiment, and the second to sixth master units set in the “after switching” column of FIG. Call signals are transmitted to 2b to 2f.

  As described above, when the transfer setting is made in the parent device 2 registered in both the normal call destination group and the transfer call destination group, the parent device 2 is excluded from the transfer destination, so that the child device 1 performs the call operation. The ringing tone is not reported even if it is made. Therefore, the operator can easily recognize that the transfer setting has been made.

As a suitable use example of the intercom system described above, there is a semi-unmanned station in which station staff is absent during times when there are few passengers such as daytime. In the case of such a station, the master unit 2 is installed in the station staff room or platform of the semi-unmanned station, and more than one master unit 2 is installed in the station staff room of the station where the station staff is always present. Install machine 1.
Thus, when the station staff is absent and becomes an unmanned station at the semi-unmanned station, if the station staff leaving the station switches the master unit (for example, the upstream home platform) 2 somewhere in the station to transfer setting, All calls from the slave unit 1 can be transferred to the master unit 2 of the manned station.
Then, if the station staff who reappears operates the recovery button 26a on a master unit (for example, a down line home master unit) 2 in the semi-unmanned station, the transfer setting is canceled and the slave unit in the semi-unmanned station is released. Call 1 is performed for a plurality of master units 2 in a semi-unmanned station.

  1 .. Interphone slave unit, 2 .... Interphone master unit, 3 .... Communication network, 11 .... Call button, 15 .... Slave unit memory (call destination storage unit), 16 .... Slave unit CPU (Slave unit call control) Part), 21 .. Call button, 24 .. Switching button, 25 .. Display part, 26 .. Operation part, 26a .. Recovery button (recovery operation part), 27 .. Master CPU.

Claims (4)

In an interphone system in which an interphone slave unit having a call / call function and a plurality of interphone master units having a call function are connected via a communication network,
The interphone slave unit transmits a call signal to a plurality of interphone master units at once, and performs a transmission of a bidirectional audio signal to and from the interphone master unit that has responded,
A call destination storage unit for storing a group of call destination interphone master units to be called all at once,
The call destination storage unit stores a normal call destination group to be called at normal time and a transfer call destination group to be called at the time of transfer setting,
When any interphone master unit in the normal call destination group is switched to the transfer setting, the slave unit call control unit recognizes the switching and moves the call destination from the normal call destination group to the transfer call destination group. Intercom system characterized by switching to. When the intercom handset call destination is switched to the transfer call destination group, the slave unit call control unit transmits a notification signal notifying that the interphone base unit belonging to the normal call destination group has been switched. ,
2. The intercom system according to claim 1, wherein the interphone master unit that has received the notification signal has a display unit that displays that the transfer setting has been switched.   3. The intercom system according to claim 1, wherein the interphone master unit of the normal call destination group includes a recovery operation unit that returns the call destination of the interphone slave unit from the transfer call destination group to the normal call destination group. . When an interphone master unit common to both the normal call destination group and the transfer call destination group is registered,
When the transfer operation is performed in the common interphone master unit, the slave unit call control unit excludes the interphone master unit from the transfer call destination group until the transfer setting is canceled, and the interphone slave unit receives the call operation. 4. The intercom system according to claim 1, wherein no call signal is transmitted.

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