JP4780397B2 - Intercom system - Google Patents

Description

The present invention relates to an intercom system implemented as a local communication infrastructure, and more particularly, to a control method for managing a group call by grouping a number of slave units into a group by a main controller.

Recently, intercom systems are being adopted as general communication systems in offices, factories, hospitals, welfare facilities, and the like. Generally, this intercom system includes a main control device, a plurality of parent devices connected to the main control device by wired or wireless lines, and a plurality of child devices connected to each parent device by wireless lines. It has a basic configuration consisting of the following functions, and is equipped with functions such as business communication broadcasting and in-house call broadcasting as well as extension telephones to realize advanced on-site communication.

In the intercom system, the main control unit manages a large number of slave units divided into a plurality of groups, and has a group call function for performing simultaneous mutual communication between the slave units belonging to each group. A system is also realized in which a slave unit operates a group switch to move between groups related to a group call and freely belong to another group. For example, Patent Document 1 below discloses a technique for controlling movement between groups in a group call using a facility message based on a push button sound from a mobile station (income terminal = child device).
JP 2002-019693 A

By the way, in the conventional intercom system, the group to which the group call belongs after the power of the slave unit is turned on is fixed. Therefore, even if there are many cases where a group call is made outside of the fixed group, it is necessary to move to the desired group by operating the group switch after belonging to the fixed group. In other words, it is troublesome because the switch operation is involved, and it takes time until a desired group call is performed because the line connection is switched. For example, in the case of an employee such as a manufacturer, since it belongs to the design department, it is set to always be in a group call state belonging to the group of the design department after turning on the portable handset However, the above-mentioned disadvantages and inconveniences occur when a special product development project group is to be joined for a certain period of time and the project team frequently meets in a group call state. Therefore, in the intercom system, the group selected by each group switch of the slave unit and the group in which the slave unit belongs after the power is turned on and makes a group call can be individually set for each slave unit. It was created for the purpose of doing.

The first invention is a main control device that controls the entire network, one or more parent devices connected to the main control device, and these one or more parent devices are connected via a wireless line. A plurality of slave units, wherein the plurality of slave units are grouped into a plurality of groups under the control of the main control device, and each slave unit is associated with all or part of the group. A group call state in the group selected by the switch from a group call state in the group to which the user currently belongs by selectively operating the switch in each of the slave units. In the intercom system that can be transferred to the group call, the main control device, for the device identification information corresponding to each slave unit, to which the group call belongs after the power on of each slave unit , Designation information indicating whether to always be a specific group of each of the groups, or to belong to a group at the time of the most recent power-off of each of the slave units or the departure from the latest outside the network area, indicating the specific group Based on the setting information storage means storing the fixed group information and the variable group information indicating the current belonging group in association with each other and the belonging group change request from the slave unit, the belonging group of the slave unit has been changed In this case, information updating means for updating variable group information associated with device identification information related to the slave unit in the setting information storage unit to variable group information indicating the belonging group after the change, and the slave unit When the device identification information of the slave unit is received via the master unit after the power is turned on, the setting information storage unit is searched to identify the device Search unit for confirming the designation information corresponding to the information and detecting the fixed group information or the variable group information based on the designation information, and a group to which the group call belongs after the power of each slave unit is turned on Is set on the basis of the fixed group information or the variable group information detected by the search means.

According to the first aspect of the invention, the setting information storage means of the main control device allows the setting method for the group to which the group call belongs after each child device is turned on to be individually selected for each child device. In other words, the former setting method is to select whether to always select a specific group within each of the groups, or to belong to a group at the time of the most recent power-off of each of the slave units or the removal of the most recent out of the network area. The group in the case of selection is indicated by fixed group information. On the other hand, when the latter setting method is selected, it is indicated by variable group information. In this case, the group is updated by the information updating means every time the group to which the slave unit belongs is changed, and when the power is turned off or the network It is determined at the time of leaving the service area, and is detected by the search means when the slave unit starts up when the power is turned on next time. Therefore, if there are almost all group calls that belong to the same group, the former setting method should be selected, and the group is often changed. However, when the change is made, it is continuously repeated several times. The latter setting method may be selected when making a group call by belonging to the changed group.

According to a second aspect of the present invention, a main control device that controls the entire network, one or more parent devices connected to the main control device, and these one or more parent devices are connected to each other via a wireless line. A plurality of slave units, wherein the plurality of slave units are grouped into a plurality of groups under the control of the main control device, and each slave unit is associated with all or part of the group. A group call state in the group selected by the switch from a group call state in the group to which the user currently belongs by selectively operating the switch in each of the slave units. In the intercom system that can be transferred to, each of the slave units always sets a group to which the group call of the own unit after power-on is a specific group in each of the groups, or A communication protocol executed between an affiliated condition selection means for selecting whether to be an affiliated group at the time of the most recent power-off or when leaving the network outside the latest network, and the main controller via the master unit after the power is turned on In addition to the device identification information of the own device, the information notification means for notifying the main control device of the selection information by the belonging condition selection means, the main control device corresponds to each of the child devices to the device identification information, the fixed group information indicating a specific group and setting information storage means for storing in association with the variable group information indicating a current affiliation groups, belonging group change request from the handset Based on the variable group associated with the device identification information related to the slave unit in the setting information storage means when the group to which the slave unit belongs is changed. Information update means for updating information to variable group information indicating the group to which the user belongs after change, and when the device identification information and the selection information of the child device are received via the parent device after the child device is turned on Search means for searching the setting information storage means to detect the information selected by the selection information from the fixed group information or the variable group information associated with the device identification information; The main control device sets a group to which the group call belongs after powering on each slave unit based on the fixed group information or the variable group information detected by the search means It relates to the characteristic intercom system.

According to the second invention, it is possible to select the group affiliation condition relating to the group call of the own device after the power is turned on from each slave device side. That is, any condition corresponding to the designation information stored in the setting information storage means in the first invention is selected on the side of the slave unit and notified to the main control unit, and the main control unit determines the group membership condition based on the notification information. Set. Then, according to this method, the power is turned off after the slave unit belongs to the desired group, and the affiliated condition selection means indicates that the affiliated group after the power is turned on is “with the latest power off or withdrawing to the outside of the latest network range” If the power is turned on in the state selected so as to be the “affiliation group at the time”, it is always possible to start from the group call state in the desired group when the next slave unit is activated.

According to a third aspect of the present invention, a main control device that controls the entire network, one or more parent devices connected to the main control device, and these one or more parent devices are connected to each other via a wireless line. A plurality of slave units, wherein the plurality of slave units are grouped into a plurality of groups under the control of the main control device, and each slave unit is associated with all or part of the group. A group call state in the group selected by the switch from a group call state in the group to which the user currently belongs by selectively operating the switch in each of the slave units. In the intercom system that can be transferred to, each of the slave units always sets a group to which the group call of the own unit after power-on is a specific group in each of the groups, or Set whether to send to the main control device the belonging condition selection means for selecting whether to belong to the group at the time of the most recent power-off or when leaving the latest outside the network area, and the belonging condition selection means The transmission condition setting unit sets a condition for not transmitting the selection information in a communication protocol executed between the transmission condition setting unit and the main control device via the master unit after the power is turned on. In this case, only the device identification information of its own device is notified to the main control device, and when the transmission condition setting means sets a condition for transmitting the selection information, the device identification information of the own device is Information notification means for notifying selection information as well, wherein the main control device responds to the device identification information corresponding to each of the slave units by the group call after the power of each of the slave units is turned on. Designation information indicating whether the belonging group is always a specific group within each group, or the belonging group at the time of the most recent power-off or the most recent departure from the network, Fixed group information indicating a group and variable group information indicating a current belonging group are stored in association with each other, and based on an affiliate group change request from the slave unit, the slave group belongs group First information updating means for updating variable group information associated with device identification information related to the slave unit in the setting information storage means to variable group information indicating the belonging group after the change And when only the device identification information is received from the slave unit via the master unit after the slave unit is turned on, the setting information storage After searching for means and confirming the designation information corresponding to the device identification information, the fixed group information or the variable group information is detected based on the designation information, and the device identification information and the selection are selected from the slave unit. When the information is received via the master unit, the setting information storage unit is searched and the selected information is selected from the fixed group information or the variable group information associated with the device identification information. Search means for detecting the information of the one being used, and when the device identification information and the selection information are received from the slave unit via the master unit, designation information of the setting information storage unit is received from the slave unit Second information changing means for updating the received selection information, and the search means detects the group to which the group call belongs after the power of each slave unit is turned on. According to intercom system, characterized in that the set based on the constant-group information or the variable group information.

In the third aspect of the invention, the transmission condition setting means can set whether or not to transmit the group membership condition after power-on selected by the membership condition selection means to the main controller in each slave unit. Yes. The setting information storage means of the main control unit has the same configuration as that of the first invention, and the designation information of the setting information storage means is converted into the selection information received from the slave by the second information changing means. Update. Therefore, each slave can be used as the system of the second invention when the selection information by the belonging condition selection means is transmitted to the main control device, and can be used as the system of the first invention when not transmitted.

Since the intercom system of the present invention has the above-described configuration, the following effects can be obtained . In the first invention, it is possible to select and set whether the group to which the group call after power-on is fixed is a specific group, or the group to which the group call belongs at the time of the most recent power-off or the most recent departure from the network area. Provide an easy-to-use intercom system. In the second and third inventions, the selection setting is based on the fixed information registered on the main control device side in the first invention, but can be selected and set from the child device side. The intercom system that can change and set the affiliation group to the desired group after the power is turned on is realized by the simple procedure.

Hereinafter, an embodiment of an intercom system of the present invention will be described in detail with reference to the drawings.
[Embodiment 1]
First, FIG. 1 is a configuration diagram of an intercom system installed in a factory or company premises. This intercom system has a main control device 1 for controlling the operation of the entire system. The main control device 1 is connected to a public line 3 and a telephone 5, and is arranged at each important point in the premises. Connected to a plurality of master devices 7a to 7d.

These parent devices 7a to 7d can be individually connected to a large number of child devices 19a to 39n through the wireless line 23, respectively. In this embodiment, the slave units 19a to 39n are grouped into groups G1, G2, and G3. The slave units 19a to 19n belong to the group G1, and the slave units 29a to 29n belong to the group G2. The child devices 39a to 39n belong to the group G3. The intercom system is provided with a data setting personal computer (PC) 21 for setting system data and the like for each of the slave units 19a to 39n. The personal computer 21 is connected to the main controller 1. It is connected.

FIG. 2 is a block diagram showing internal configurations of main controller 1, master units 7a to 7d, and slave units 19a to 39n in the intercom system of FIG. As shown in the figure, the main controller 1 includes a control unit 51 that controls the operation of the entire system, and an audio MIX unit 53 that mixes simultaneous call audio between a plurality of slave units in a group call state. In addition, a slave unit setting table 55 is stored in the built-in memory of the control unit 51. Each of the parent devices 7a to 7d includes a control unit 61 that controls the built-in system, a reception unit 63 that performs voice / data communication with each of the child devices 19a to 39n via the wireless line 23, and a transmission unit 65. . Each of the slave units 19a to 39n includes a control unit 75 that controls the built-in system, a reception unit 73 that performs voice / data communication with each of the master units 7a to 7d via the wireless line 23, and a transmission unit 71. ing.

As shown in FIG. 3, the intercom system of this embodiment configured as described above performs selection input from each of the slave units 19a to 39n to perform [group call], [during simultaneous communication], [during individual call] ], [Individual Call], and [Floor Broadcast] modes can be selected. That is, switch buttons are arranged on the operation surface of each of the slave units 19a to 39n as shown in FIG. 4, and each mode is selected and switched by the user selectively turning on each left switch button. It is supposed to be.

More specifically, first, in the power off state, the power / group (1) switch serves as both power on / off and group selection. When it is turned on for 2 seconds or more, the power / group (1) switch functions as a power switch. It functions as a group selection switch when it is turned on in a shorter time. Therefore, when the power / group (1) switch is turned on for 2 seconds or more, a system as a terminal device is started up and communicates with the main control device 1 via any one of the parent devices 7a to 7d. The group call state that belongs to the group GX (X = 1or2or3) set by. In the group call state belonging to each of the groups G1, G2, and G3, the currently belonging group is defined among the power / group (1) switch, the group (2) switch, and the group (3) switch. By turning on a switch other than the switch, it is possible to shift to a group call state belonging to a group defined in advance for the switch that has been turned on.

Further, when a group switch belonging to any of the groups G1, G2, and G3 is in a group call state, if the simultaneous switch is turned on, the simultaneous communication state is entered. If any group switch is turned on in the simultaneous communication state, the immediately preceding state is established. Return to group call status. Further, when the individual switch is turned on in the group call state, the individual call state is entered, and when any group switch is turned on in the individual call state, the previous group call state is restored. In the individual call state, when the answering switch of the called remote unit is turned on, the individual call state is set. When the individual switch is turned on in the individual call state, the individual call state is set. In the group call state, if the simultaneous switch is turned on, it will be in the state of simultaneous communication, and if the response switch of the other handset that responds to the simultaneous contact in this simultaneous communication state is turned on, it will be in the individual call state, When any group switch is turned on in this individual call state, the previous group call state is restored. Further, when the broadcast switch is turned on in any group call state, the floor broadcast device 15 operates to perform the floor broadcast. When any group switch is turned on in this floor broadcast state, the previous group call state is activated. Return to.

Then, the procedure for setting a group call (group GX in FIG. 3) at the time of power-on in FIG. 3 and a case where a group call is performed by moving from a group call state belonging to any group to another group (same as above) In the figure, the setting procedure of the movement between groups GX / GY / GZ is shown in the flowchart of FIG. However, in FIG. 5, the handset 19 a is taken as an example of the individual terminal, and the movement between groups is shown only when moving from the group at startup to another group. First, when the handset 19a is started by turning on the power / group (1) switch, a call request and a call request confirmation are made with the main control device 1 via any of the base units 7a to 7d. A predetermined communication protocol is executed, and a link between them is established (S1 to S3). Further, in the communication protocol procedure, the slave unit 19a notifies the main control device 1 of its own device number (here, “19a”), and the main control device 1 acquires the device number of the slave unit 19a. .

Next, in the main controller 1, the control unit 51 searches the slave unit setting table 55 using the device number “19a” (S4). Here, as shown in FIG. 6, the slave unit setting table 55 stores state values related to the five setting items in association with the device numbers of the slave units 19 a to 39 n. In the table 55, “HG” is an initial value of the group to which the slave unit is turned on, “1” indicates the group G1, “2” indicates the group G2, and “3” indicates the group G3. “CG1” is a value indicating the association affiliation group of the group (2) switch, and “CG2” is a value indicating the association affiliation group of the group (3) switch, and the relationship between the value and the group is the same as described above. . “PWG” is a value indicating an affiliated group related to the group call at the current time point (corresponding to the affiliated group at the time of the most recent power-off or the latest out of service area when the handset is turned on). The relationship is the same as described above. “FLG” is a definition value indicating whether the group to which the slave unit is activated is fixed or variable. “0” refers to “HG”, and “1” refers to “PWG”. It defines what should be determined by reference.

Returning to FIG. 5, when the control unit 51 of the main control device 1 searches the slave unit setting table 55 and finds the device number “19a”, it checks the value of FLG in the setting item (S4). Then, according to the definition of FLG, when it is “0”, it refers to HG, and “1” refers to PWG. However, as shown in FIG. Since it is “0”, the affiliation group is set with reference to HG = “1” (S5). In other words, the group to which the handset 19a belongs is fixed to the group G1, and the main control device 1 sets the communication line so that the handset 19a belongs to the group G1 (opening a transmission / reception voice path, etc.). To set the handset 19a to the group call state belonging to the group G1 (S5).

Next, in the handset 19a, when moving to another group during the group call in the group G1, the group (2) switch or the group (3) switch is turned on to designate the destination group. The ON signal is transmitted to the main control device 1 via any one of the parent devices 7a to 7d (S21). In this case, the main control device 1 confirms the slave unit number, confirms which group switch on which slave unit is ON (S22), searches the slave unit setting table 55, and searches for the device number. “19a” is found, the group indicated by the on signal of the group switch is obtained by referring to the values assigned to CG1 and CG2 in the setting item, and the slave unit 19a is indicated by the on signal from the current group. Change setting to move to the group is performed (S23 to S25). When the group switch ON signal indicates the current group, the change setting process is not performed (S24) because the group switch can be regarded as being operated by mistake. If the change setting of the belonging group is performed, the PWG value is updated to the value of the new belonging group after the change setting (S26). As a result, if the on signal is related to the group (2) switch based on the handset setting table 55 shown in FIG. Is related to the group (3) switch, it becomes a group call state belonging to the group G3.

On the other hand, according to the state value of the setting item related to the slave unit 29a in the slave unit setting table 55 of FIG. 6, the slave unit 29a is controlled as follows. First, in the group call setting procedure at power-on startup, when the device number “29a” is found by searching the slave unit setting table 55, the value of FLG in the setting item becomes “1”. Therefore, the PWG value “2” is referred to, and the communication line setting process is executed to set the handset 29a to the group call state belonging to the group G2. That is, since the PWG is “2”, the handset 29a was performing a group call belonging to the group G2 at the previous power-off or out of service range, and the group call in the group G2 at the next start-up. Start from the state. In this way, when a handset whose FLG is set to “1” in the handset setting table 55 is activated, the group call in the group to which the PWG belongs at the time of the previous power-off or out of service This is in contrast to the fact that the FLG related to the slave unit 19a is "0" and the group to which the start belongs is always fixed to the group indicated by HG.

Further, in the slave unit setting table 55 of FIG. 6, CG1 related to the slave unit 29a is "2" and CG2 is "1". When the group (2) switch of the slave unit 29a is turned on, The control device 1 makes the handset 29a belong to the group G2, as in the case of the handset 19a. However, when the group (3) switch is turned on, the handset 29a belongs to the group G1, and the power / group (1 ) When the switch is turned on (within 2 seconds), it belongs to the group G3. Then, every time the belonging group change setting is performed, the value of the PWG is updated to the new belonging group value after the change setting, as in the case of the slave unit 19a.

As described above, according to the intercom system of this embodiment, the main control device 1 can individually set the functions related to the group call of each of the slave units 19a to 39n in the slave unit setting table 55. In addition to responding flexibly to the circumstances of each user of the handset, it is possible to construct a system that takes into account the handset's ease of use so that it is possible to shift to a group call belonging to the desired group without performing a switch operation when the power is turned on. Yes.

[Embodiment 2]
In the first embodiment, the control unit 51 of the main control device 1 uses the slave unit setting table 55 in the built-in memory to control the affiliation group related to the group call of each of the slave units 19a to 39n. In that case, when each handset 19a to 39n moves from the call state in the group to which it belongs once to another group to make a call (steps S21 to S27 in FIG. 5), it selects the group to move to. Can be freely performed by turning on the group switch, but the group to which the device belongs at the time of activation depends on the setting information corresponding to the slave unit number in the slave unit setting table 55 (steps S4 to S6 in FIG. 5). There is no room for selection on the side of each handset 19a to 39n.

On the other hand, when it is shown as a case in the above [Problems to be solved by the invention], that is, when an employee who belongs to the design department participates in a special product development project group for a certain period of time. It is desirable to keep the slave unit carried by the employee in the group call state of the development project group at startup. However, for that purpose, FLG information corresponding to the slave unit number of the employee's slave unit in the slave unit setting table 55 of the main control unit 1 by a maintenance operation performed by connecting the data setting PC 21 to the main control unit 1. It is troublesome because it is necessary to change to the installation location of the data setting PC 21 and generally requires a complicated operation procedure.

Therefore, in this embodiment, in order to enable each of the slave units 19a to 39n to set the selection conditions of the group to which the slave unit 19a is activated, the FLG is set to the slave units 19a to 39n as shown in FIG. A switch is provided. Each slave unit 19a to 39n notifies the main controller 1 of the setting information of the FLG setting switch together with its own slave unit number in the initial communication protocol after the power is turned on.

The procedure for setting the group call at the time of starting the slave unit in this case is shown in the flowchart of FIG. However, in the same figure, as in the case of FIG. 5, the handset 19a is taken as an example of the individual terminal. First, when the handset 19a is started by turning on the power / group (1) switch, a call request and a call request confirmation are made with the main control device 1 via any of the base units 7a to 7d. A predetermined communication protocol is executed, but the slave unit number (19a) and the setting information of the FLG setting switch are notified to the main controller 1 in the communication protocol (S11 to S12).

When the link is established between the slave unit 19a and the main control device 1, the control unit 51 of the main control device 1 uses the slave unit number (19a) acquired by the communication protocol to set the slave unit setting table 55. The point of searching for 'is the same as in the first embodiment, and the setting item corresponding to the slave unit number (19a) in the slave unit setting table 55' is set as usage information (S13, S14). In this embodiment, since FLG is notified from the side of the slave units 19a to 39n, unlike the slave unit setting table 55 in the first embodiment, the slave unit setting table 55 'in this embodiment has an item of FLG. There is no need to provide.

On the other hand, the contents defined by the notified FLG are the same as in the case of the first embodiment. When the FLG setting switch is turned on in FIG. 7A, FLG = "1" and "PWG" In the case of being off, it is defined that FLG = "0" and to be determined with reference to "HG". Therefore, when the notified FLG is “0”, the control unit 51 of the main control device 1 sets the handset 19a in the group call state in the specific group set with the value of HG and notifies the notified FLG. When “1” is “1”, the group call state is set in the group indicated by the value of the PWG (that is, the group to which the previous power was turned off or out of service) (S15, S16).

According to this embodiment, by switching the FLG setting switch on the handset 19a to 39n side, the belonging group at the time of starting is always a specific group, or the belonging group at the time of the previous power-off or out of service At this stage, it is not always possible to set the group to which the slave units 19a to 39n are activated as a desired group. However, once the group call state belonging to one of the groups is entered, the group (X) button is operated in that state, and in the desired group (in the case of the above case, the group call state of the development project group) If the power is turned off after entering the group call state, the main controller 1 will turn on the PWG in the slave unit setting table 55 ′ (this stage) when the power is turned on the next time the FLG setting switch is turned on. Therefore, it is automatically started from a group call state in the desired group. In the following, the FLG setting switch is set to the on setting state, and the group may be moved to any group during the process, but finally the power is turned off in the group call state belonging to the desired group. By doing so, the group call state in the desired group is always set at the next activation.

[Embodiment 3]
Similarly to the second embodiment, this embodiment also relates to a configuration for allowing each of the slave units 19a to 39n to set the belonging group at the time of activation. In this embodiment, as shown in FIG. 7B, the slave units 19a to 39n are provided with an FLG setting switch and an enable / disable switch for setting whether to enable the FLG setting. Here, the FLG setting switch is used to set the membership condition to the group when the power of the slave units 19a to 39n is turned on, as in the case of the second embodiment. “1” defines what should be determined with reference to “PWG”, and if OFF, defines that FLG = “0” and should be determined with reference to “HG”. On the other hand, ON / OFF of the valid / invalid switch can set whether or not each of the slave units 19a to 39n notifies the main controller 1 of the FLG together with its own slave unit number in the initial communication protocol after the power is turned on. It is like that.

Therefore, this embodiment is the same as that of the second embodiment when the valid / invalid switch is set to ON, and the same as that of the first embodiment when it is set to OFF. In this embodiment, as in the case of the first embodiment, the main controller 1 uses the child device setting table 55 provided with the item FLG, and the FLG of the child device setting table 55 is each child device. Each time the FLG is notified from the machines 19a to 39n, the FLG is updated.

According to this embodiment, as described above, the FLG in the slave unit setting table 55 is updated, so that the FLG setting switch is set to ON (FLG = 1) in each of the slave units 19a to 39n. When the power switch is turned on with the enable / disable switch set to on, the group call state belonging to the group to which it belonged when the power was turned off or out of service last time, and the group (X) button is operated from that state. Then, once the power is turned off after entering the group call state in the desired group, FLG = 1 in the handset setting table 55 and PWG becomes the desired group state value. Therefore, when the power switch is turned on with the valid / invalid switch turned off next time, the group call state in the desired group is automatically set at the next activation.

In the present invention, a plurality of slave units are connected to the main control device via a master unit via a wireless line, and each slave unit grouped into a plurality of groups changes the group to which it belongs under the control of the main control unit. It can be applied to a network system that allows group calls.

It is a block diagram of the intercom system which concerns on Embodiment 1 of this invention. It is the block diagram which showed each internal structure of the main controller, the main | base station, and a subunit | mobile_unit in the intercom system of Embodiment 1. FIG. It is a figure which shows each operation state in the intercom system of Embodiment 1, and its transition state. It is a front view of the subunit | mobile_unit used for the intercom system of Embodiment 1. FIG. In the intercom system of Embodiment 1, it is a communication sequence diagram (mainly showing the execution procedure in the main controller) when a slave unit is activated and when a group switch is turned on in a group call state. . It is a figure which shows the structure of the subunit | mobile_unit setting table which the built-in memory of the control part in the main controller has stored. It is a front view of the subunit | mobile_unit used for the intercom system of Embodiment 2 and Embodiment 3. FIG. In the intercom system of Embodiment 2, it is a communication sequence diagram (mainly showing the execution procedure in a main controller) until it becomes a group call state first when a cordless handset is started.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Main control apparatus, 3 ... Public line, 5 ... Telephone, 7a-7d ... Master machine, 15 ... Floor broadcasting apparatus, 19a-19n, 29a-29n, 39a-39n ... Slave machine, 21 ... Personal computer for data setting , 23... Wireless line, 51, 61, 75... Control unit, 53... Voice MIX unit, 55... Handset setting table, 63, 73.

Claims (3)

A main control device that controls the entire network, one or more parent devices connected to the main control device, and a plurality of child devices connected to the one or more parent devices via a wireless line The plurality of slave units are grouped into a plurality of groups under the control management of the main controller, and each of the slave units has a plurality of switches associated with all or part of the group. It is possible to shift from the group call state in the group to which the user currently belongs to the group call state in the group selected by the switch by selectively operating the switch on each slave unit. In the intercom system
The main controller is
For the device identification information corresponding to each slave unit, the group call belonging group after each slave unit is turned on is always a specific group within each group, or each slave unit The designation information indicating whether to belong to the group at the time of the most recent power-off or the most recent departure from the network area, the fixed group information indicating the specific group, and the variable group information indicating the current group are stored in association with each other. Setting information storage means,
Based on an affiliate group change request from the slave unit, when the affiliated group of the slave unit is changed, variable group information associated with device identification information related to the slave unit in the setting information storage unit, Information updating means for updating to variable group information indicating the group to which the change has been made;
When the device identification information of the child device is received via the parent device after the child device is turned on, the setting information storage means is searched to confirm the designation information corresponding to the device identification information, Search means for detecting the fixed group information or the variable group information based on the designation information,
An intercom system characterized in that a group to which the group call belongs after power-on of each slave unit is set based on the fixed group information or the variable group information detected by the search means. A main control device that controls the entire network, one or more parent devices connected to the main control device, and a plurality of child devices connected to the one or more parent devices via a wireless line The plurality of slave units are grouped into a plurality of groups under the control management of the main controller, and each of the slave units has a plurality of switches associated with all or part of the group. It is possible to shift from the group call state in the group to which the user currently belongs to the group call state in the group selected by the switch by selectively operating the switch on each slave unit. In the intercom system
Each slave unit is
Whether the group belonging to the group call after power-on is always a specific group within each group, or whether the group belongs to at the time of the most recent power-off or the most recent out of network A belonging condition selection means to select;
Information for notifying the main control device of selection information by the affiliation condition selecting means together with the device identification information of the own device in a communication protocol executed with the main control device via the master unit after power-on A notification means,
On the other hand, the main controller is
The relative device identification information corresponding to each slave unit, and the setting information storage means for storing in association with the variable group information indicating a fixed group information and the current affiliation groups indicating the particular group,
Based on an affiliate group change request from the slave unit, when the affiliated group of the slave unit is changed, variable group information associated with device identification information related to the slave unit in the setting information storage unit, Information updating means for updating to variable group information indicating the group to which the change has been made;
When the device identification information and the selection information of the child device are received via the parent device after the child device is turned on, the setting information storage unit is searched and associated with the device identification information. Search means for detecting information selected by the selection information from the fixed group information or the variable group information, and
The intercom characterized in that the main control device sets a group to which the group call belongs after the power of each slave unit is turned on based on the fixed group information or the variable group information detected by the search means system. A main control device that controls the entire network, one or more parent devices connected to the main control device, and a plurality of child devices connected to the one or more parent devices via a wireless line The plurality of slave units are grouped into a plurality of groups under the control management of the main controller, and each of the slave units has a plurality of switches associated with all or part of the group. It is possible to shift from the group call state in the group to which the user currently belongs to the group call state in the group selected by the switch by selectively operating the switch on each slave unit. In the intercom system
Each slave unit is
Whether the group belonging to the group call after power-on is always a specific group within each group, or whether the group belongs to at the time of the most recent power-off or the most recent out of network A belonging condition selection means to select;
Transmission condition setting means for setting whether or not to transmit selection information by the affiliation condition selection means to the main control device;
In the communication protocol executed with the main control device via the master unit after the power is turned on, when the transmission condition setting means sets a condition for not transmitting the selection information, Information notification for notifying only the device identification information to the main control device, and for notifying the selection information together with the device identification information of its own device when the transmission condition setting means sets a condition for transmitting the selection information Means and
On the other hand, the main controller is
For the device identification information corresponding to each slave unit, the group call belonging group after each slave unit is turned on is always a specific group within each group, or each slave unit The designation information indicating whether to belong to the group at the time of the most recent power-off or the most recent departure from the network area, the fixed group information indicating the specific group, and the variable group information indicating the current group are stored in association with each other. Setting information storage means,
Based on an affiliate group change request from the slave unit, when the affiliated group of the slave unit is changed, variable group information associated with device identification information related to the slave unit in the setting information storage unit, First information updating means for updating to variable group information indicating the group to which the change has been made;
When only the device identification information is received from the slave unit via the master unit after the slave unit is turned on, the setting information storage unit is searched to confirm the designation information corresponding to the device identification information Then, when the fixed group information or the variable group information is detected based on the designation information, and the device identification information and the selection information are received from the slave unit via the master unit, the setting information Search means for searching storage means to detect information selected by the selection information from the fixed group information or the variable group information associated with the device identification information;
Second information changing means for updating the designation information in the setting information storage means to the selection information received from the slave unit when the device identification information and the selection information are received from the slave unit via the master unit. And
An intercom system characterized in that a group to which the group call belongs after power-on of each slave unit is set based on the fixed group information or the variable group information detected by the search means.

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