JPH0746331A - Interphone - Google Patents

Abstract

PURPOSE:To make it possible to use a channel selecting switch also for setting up data other than channel selecting data. CONSTITUTION:Each of sub-equipments 31, 32 mounts a hand set 40 and plural channel selecting switches 41 to 45 for addresses '1' to '5' on its front side and includes a non-volatile memory for storing a self-address in its inside. Each of the sub-equipments 31, 32 can sets up and stores its own address in the non- volatile memory 46 by operating the switches 41 to 45. Consequently the switches 41 to 45 can be used for setting up data other than channel selecting data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom system in which a plurality of sub-units are connected to a common communication path and a call is made between the sub-units, and more particularly to an intercom system in which a channel selection switch can be effectively used.

[0002]

2. Description of the Related Art Conventionally, in an intercom device, a parent-child intercom device capable of only talking between a master unit and a slave unit and a call between the master unit and the sub unit as well as the sub units can communicate with each other. There are mutual expressions.

FIG. 12 is a block diagram showing such a conventional parent-child intercom system.

In FIG. 12, a plurality of slave units 911, 912 ... 91n are connected to one master unit 901 through individual lines 921, 922 ... 92n. Lines 921, 922, ..., 92n are two wirings for voice and power.

[0005] In such a conventional parent-child intercom apparatus, a call can be made between the parent device 901 and a plurality of child devices 911, 912 ... 91n via individual lines 921, 922 ... 92n. 91n, 912, ... 91n have the drawback that they cannot call each other.

FIG. 13 is a block diagram showing a conventional mutual intercom system.

In FIG. 13, reference numeral 950 is a common line composed of four wirings common to the power source, the voice, the transmission, and the common line 950. One common device 951 and a plurality of multi-function devices 961 are provided on the common line 950. 962 ... Are commonly connected. The parent device 951 is configured to rectify the commercial AC voltage supplied from the outlet 952 and supply it to the multi-function devices 961, 962, ... Through the power supply wiring of the common line 950. Also,
In such a conventional mutual intercom system, the main unit 951 and a plurality of multi-function devices 961, 9 are connected via the common line 950.
It becomes possible to talk with 62 ...
1,962 ... Communication with other people is possible. However,
In such a mutual intercom system, in order to identify the master unit and the plurality of sub units at the time of calling, the master unit and the plurality of sub units are provided with a DIP switch, so that the master unit and the plurality of sub units can be connected to each other. Although I am trying to set my own address, the number of DIP switches makes the operation time consuming for an unfamiliar user. In response to this, a rotary switch type has been developed, but this is too expensive. Since the DIP switch and rotary switch for setting the self address are provided on the back side of the master unit and multiple sub units, there is a problem that the self address cannot be changed when the master unit and multiple sub units are attached and fixed. .

[0008]

SUMMARY OF THE INVENTION In the above conventional intercom system of the mutual type, in order to identify the master unit and the plurality of sub units, all the master unit and the plurality of sub units are provided with a dip switch or a rotary switch. Although the self-addresses of the master unit and multiple sub-units are set by this, this is inconvenient because the operation becomes complicated and costs are high, and the master unit and multiple sub-units are attached and fixed. In that case, there is a problem that the self-address cannot be changed.

Therefore, an object of the present invention is to eliminate the above-mentioned problems and to provide an intercom apparatus in which a tuning switch can be used for setting data other than tuning.

[0010]

The intercom system of the present invention is an intercom system capable of making a call between a plurality of sub-units commonly connected to a common wiring, and provided in each of the plurality of sub-units. By operating the channel selection switch, a plurality of transmitting means for transmitting the calling address to the common wiring and the plurality of sub-devices are provided respectively. By operating the channel selection switch, the predetermined data is set, respectively. A plurality of data setting means to perform, a plurality of storage means respectively provided in the plurality of sub-devices, respectively to store the data respectively set by the plurality of data setting means, respectively provided in the plurality of sub-devices, A plurality of control means for respectively controlling the plurality of sub-devices based on the data stored in the plurality of storage means.

[0011]

According to this structure, the plurality of data setting means respectively set predetermined data by operating the tuning switches, so that the tuning switch is used for setting data other than tuning. Can be used for

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an intercom system according to the present invention.

In FIG. 1, reference numeral 10 is a power supply wiring 1.
1, 4 of audio wiring 12, transmission wiring 13 and common wiring 14
The common line 10 is a common line, and the power line 11 and the voice line 12 of the common line 10 are the power source unit 2
1 output terminal pair. Power supply unit 21
Rectifies the AC voltage of AC100V from the AC power supply 22 to generate a DC voltage of 12V between the power supply wiring 11 and the audio wiring 12.

Power wiring 11 and voice wiring 1 of the common line 10
2, the transmission line 13 and the common line 14 are the plurality of sub-devices 3.
1, 32 ...

The sub-devices 31, 32, ... Have a handset 40 on the front side and channel selection switches 41, 42, ...
5 is provided, and a nonvolatile memory 46 for storing its own address is provided inside. The sub-devices 31, 32, ... Can set their own addresses by operating the tuning switches 41, 42, ..., 45 and store them in the non-volatile memory 46.

FIG. 2 is a block diagram showing the auxiliary machine 31 of FIG. 1 in more detail.

Input terminals 51, 52, 53, 5 of the auxiliary device 31
4 is a power supply wiring 11, a voice wiring 12, and a transmission wiring 1 respectively.
3 and the common wiring 14.

The input terminal 51 is connected to a power supply circuit 61 provided inside the sub machine 31.

The power supply circuit 61 has 12 lines from the power supply wiring 11.
The DC voltage of V is stepped down to create a DC voltage of 5 V and supplied to the nonvolatile memory 46, the transmission interface 62, the control circuit 63, and one ends of the resistors R1, R2 ... R5, R10.

The input terminal 52 is connected to a mating hook detection circuit 64 provided inside the sub machine 31 and is also connected to one end of a switch 65. The other end of the switch 65 is connected to a first input terminal A1 of a changeover switch 67 via an amplifier 66.

The microphone 68 provided in the handset 40 of FIG. 1 is connected to the other end of the switch 65 via the amplifier 66.

The mating hook detection circuit 64 includes the common wiring 12
By detecting the voltage of the other side, it is detected whether or not the handset of the secondary device which is the other party of the call is hooked, and the other party hook detection signal a1 indicating the detection result is created and supplied to the control circuit 63.

The input terminal 53 is connected to a transmission interface 62 provided inside the sub machine 31.

The transmission interface 62 is the transmission line 1
The data signal b1 is created from the transmission signal indicating the calling address designated by the other sub-device from 3 and supplied to the control circuit 63, and the transmission signal indicating the calling address is created from the data signal c1 from the control circuit. It leads to the output terminal 53.

The input terminal 54 is connected to the reference potential point of the secondary device 31.

The other ends of the resistors R1, R2, R3, R4 and R5 have tuning switches 41, 42, 43, 44 and 4 respectively.
5 is connected to one end of each of the control circuits 63.
Are connected to the first to fifth switch signal detection terminals. The other ends of the tuning switches 41, 42, 43, 44, 45 are connected to the reference potential point.

The reset terminal of the control circuit 63 is connected to the other end of the tuning switch 45 through the series connection of the anode / cathode paths of the diodes D1 and D2. Diode D
A reset IC 68 is connected to 1 in parallel. The reset IC 68 detects ON / OFF of the switch 45, creates a reset signal based on the detection result, and guides the reset signal to the reset terminal of the control circuit 63. Although not shown, such diodes D1 and D2 and reset IC
68 is also provided in the tuning switches 41, 42, 43, 44. Capacitors C1 and C2 and crystal unit 69
Constitutes a reference signal oscillator, and supplies a reference signal as a reference for operation to the control circuit 63.

The control circuit 63 uses the first to fifth switch signal detection terminals to select the tuning switches 41, 42, 43 and 4.
ON / OFF of 4, 45 is detected, a self address is set based on the detection result, and a self address data signal e1
Is supplied to the non-volatile memory 46 or the calling address of the other party is set, a data signal c1 indicating this calling address is created and supplied to the transmission interface 62.

The non-volatile memory 46 stores the self-address data indicated by the self-address data signal e1 from the control circuit 63 at a 1-byte address and also stores the self-address data stored under the read control of the control circuit 63. The address data signal f1 is supplied to the control circuit 63.

The control circuit 63 uses the transmission interface 6
When the read address indicated by the data signal b1 from 2 corresponds to the self-address data signal f1 from the non-volatile memory 46, a calling voice signal is created and is supplied to the second input terminal A2 of the changeover switch 67 via the amplifier 70. Supply.

The common terminal C of the changeover switch 67 is connected to the speaker 71 provided in the handset 40 of FIG.

Switches 47 and 65 and changeover switch 6
7 is interlocked with the hook button of the handset, and when the handset is hooked to the main body, the switches 47, 6
5 is turned off, and the changeover switch 67 selects the second input terminal A2 and connects it to the common terminal C. Switch 4 when the handset is not hooked.
7, 65 are turned on, and the changeover switch 67 selects the first input terminal A1 and connects it to the common terminal C.

FIG. 3 is an explanatory diagram showing an address memory in the nonvolatile memory 46 of FIG.

As shown in FIG. 3, the address memory 80 in the non-volatile memory 46 includes a storage unit 81 having a total of 8 bytes including a 4-bit upper address and a 4-bit lower address.
82 ... 88.

84 are stored in the upper address storage units 81, 82, ... 84, and the lower address storage units 81, 82 are stored.
.. 84 stores one digit of the self-address data indicated by the self-address data signal e1. Therefore, if the self-address data is number 15, then 15 is stored in the address memory 80.
Data of h (h indicates hexadecimal) is stored.

FIG. 4 is a flow chart showing the operation of such an embodiment.

In FIG. 4, step S1 determines whether or not any one of the channel selection switches 41, 42, 43 and 44 is pressed, and the channel selection switches 41, 42, 4 are selected.
If none of the buttons 3 and 44 has been pressed, the determination is no, and the process ends, and the tuning switches 41, 42, 4
If any one of 3, 44 is pressed, the determination is yes and the process moves to step S2.

In step S2, the tuning switches 41 and 4 are selected.
It is determined whether or not two of the switches 2, 43, and 44 are pressed at the same time. If the two switches are pressed at the same time, the determination becomes yes and the process proceeds to step S3 to select two channels. If the switches are not pressed at the same time, the determination is no and the process moves to step S11.
In step S3, the 1st and 4th channel selection switches 41 and 44 are used.
It is determined whether or not has been pressed. If the 1st and 4th tuning switches 41 and 44 have not been pressed, the determination is no and the processing ends, and the 1st and 4th If the tuning switches 41 and 44 have been pressed, the determination is yes, the address setting flag is set in step S4, the key counter of the control circuit 63 is cleared in step S5, and the process ends. In step S2, if the two tuning switches are not pressed at the same time, the determination is no and the process moves to step S11.

In step S11, it is determined whether or not the address setting flag is set. If the address setting flag is not set, the determination is no, and in step S21, the tuning switch 41, Four
The on / off of 2, 43, 44, 45 is detected, the calling address of the other party is set, a data signal c1 indicating this calling address is created and supplied to the transmission interface 62, and the processing is ended.

In step S12, it is determined whether or not the key counter of the control circuit 63 is 0. If the key counter is 0, the determination is yes and the number of the tuning switch turned on in step S13. Is stored in step S
In 14, add 1 to the count value of the key counter,
The process ends. If the key counter is not 0 in step S12, the determination is no and step S12.
The number of the tuning switch turned on in 22 is stored under the address, the key counter is cleared in step S23, the address setting flag is cleared in step S24, and the process is terminated.

A specific operation by such processing will be described below.

When setting the self address, first set 1
By pressing the No. 4 and No. 4 tuning switches 41 and 44, the flow of steps S1 → S2 → S3 → S4 → S5 is performed, the address setting flag is set, the key counter is cleared, and the self-address input waiting state is set. Become. After this,
First, press the tuning switch of the second digit number of the self address to be stored (for example, the first address if the self address to be stored is number 15). Thereby, steps S1 → S2 → S
The flow is 11 → S12 → S13 → S14, and the number of the selected tuning switch is stored in the upper address of the nonvolatile memory 46. After this, 1 of the self-address to be stored
Press the tuning switch for the digit number (for example, number 5 if the self-address you want to store is number 15). As a result, the flow of steps S1 → S2 → S11 → S22 → S23 → S24 is performed, and the number of the selected tuning switch is stored in the lower address of the nonvolatile memory 46. As a result, the self-address is stored in the non-volatile memory 46.

When calling the other party, the handset is detached from the main body. As a result, the switches 47,
65 is turned on, and the changeover switch 67 is set to the first
The input terminal A1 of is selected and connected to the common terminal C.

Next, the channel selection switch for the second digit of the calling address data of the other party is pressed. In this state, the address setting flag is not set, so step S
1 → S2 → S11 → S21, and the control circuit 63
Is a data signal c1 based on the number of the selected tuning switch.
Is created and supplied to the transmission interface 62. The transmission interface 62 creates a transmission signal from the data signal c1 from the control circuit 63 and guides it from the output terminal 53 to the transmission line 13. Next, press the tuning switch of the first digit number of the calling address data of the other party. As a result, the flow of steps S1 → S2 → S11 → S21 is performed, and the control circuit 63 creates the data signal c1 based on the number of the selected tuning switch, and the transmission interface 62 uses the data signal c1 from the control circuit 63. A transmission signal is created and guided from the output terminal 53 to the transmission line 13.

When the handset of the other auxiliary device is picked up, the partner hook detection circuit 64 detects that the handset of the other auxiliary device is not hooked, and the partner hook detection signal a1 indicating the detection result. Is generated and supplied to the control circuit 63. As a result, the control circuit 63 causes the self-address data stored in the non-volatile memory 46 to be read out as the self-address data signal f1. Then, the control circuit 63
Is the read address data indicated by the data signal b1 from the transmission interface 62.
When it coincides with the self-address data signal f1 from, the calling voice signal is created and supplied to the speaker 71 through the amplifier 70 and the changeover switch 67. As a result, sound is output from the speaker 71. Submachine 71 in this state
Remove the handset from the main unit. As a result, the switches 47 and 65 are turned on, and the changeover switch 67 selects the first input terminal A1 and connects it to the common terminal C. As a result, the microphone 68 and the speaker 71 are connected to the voice wiring 12 via the amplifier 66, and conversation with another sub-device becomes possible.

According to such an embodiment, the channel selection switches 41, 42 ... 45 can also be used as a switch for setting the self address, so that the manufacturing cost of the intercom apparatus can be reduced and the self-address can be reduced. The operability of setting the address is also improved.

FIG. 5 is a block diagram of a submachine showing another embodiment of the intercom apparatus according to the present invention. The same components as those of the embodiment shown in FIG. ing.

In FIG. 5, what is different in this embodiment is that a relay switch 90 is inserted between the input terminal 52 and the switch 65 of the secondary device 101, and this relay switch 90 is turned on / off by the control circuit 93. It is possible to switch between secret call and conference call. The switching information between the secret call and the conference call in this case is stored in the non-volatile memory 46.

FIG. 6 is a flow chart showing the operation at the time of setting the confidential talk in such an embodiment.

In FIG. 6, a step S31 decides whether or not two of the tuning switches 41, 42, 43 and 44 are simultaneously pressed, and the two tuning switches are not simultaneously pressed. If so, the determination is no, the calling process is performed in step S32, and then the process ends. If two switches are pressed at the same time, the determination is yes and the process proceeds to step S33.

In step S33, it is determined whether or not the 1st and 3rd tuning switches 41 and 44 are pressed, and if the 1st and 3rd tuning switches 41 and 44 are pressed. Becomes YES and the confidential talk flag of the secondary device 101 is set in step S33 to end the process. If the selection switches 41 and 44 of Nos. 1 and 3 are not pressed, the determination is NO. Then, the process proceeds to step S35.

In step S35, it is determined whether or not the channel selection switches 41 and 44 of Nos. 2 and 4 are pressed, and if the channel selection switches 41 and 44 of No. 2 and 4 are pressed, Becomes YES and the confidential talk flag of the secondary device 101 is reset in step S36 to end the process. If the channel selection switches 41 and 44 of Nos. 1 and 3 are not pressed, the determination is NO. Then, the process proceeds to step S35.

According to such an embodiment, the channel selection switches 41, 42 ... 45 can also be used as a switch for switching between secret call and conference call.

When the confidential talk flags of all the sub-devices are set, the call is disabled except for the sub-devices called by the relay switch 90.

When the confidential talk flags of all the sub-devices are reset, all the sub-devices are in the call state.

FIG. 7 is a flow chart showing a first modification of the embodiment shown in FIG. 6, and shows the operation of the sub-device on the side that operates the channel selection switch. Further, in this modification, the circuit diagram of FIG. 5 is used for the description.

In FIG. 7, in step S41, it is determined whether or not two of the tuning switches 41, 42, 43, 44 are pressed at the same time, and the two tuning switches are not pressed at the same time. If so, the determination is no, the calling process is performed in step S42, and then the process ends. If two switches are pressed at the same time, the determination is yes and the process proceeds to step S43.

In step S43, it is determined whether or not the 1st and 3rd tuning switches 41 and 43 are pressed, and if the 1st and 3rd tuning switches 41 and 43 are pressed. Is determined to be yes, and in step S44, the secondary device 101
The secret-talk flag is set and the secret-talk flag set signal for setting the secret-talk flag to another sub-device is introduced to the transmission line 14 through the transmission interface to end the processing, and the first and third channel selections. If the switches 41 and 43 have not been pressed, the determination is no and step S4.
The process moves to step 5.

In step S45, it is determined whether or not the channel selection switches 41 and 44 of Nos. 2 and 4 have been pressed, and if the channel selection switches 42 and 44 of No. 2 and 4 have been pressed, Becomes YES and resets the confidential talk flag of this sub machine in step S46 and guides the confidential talk flag set signal for resetting the confidential talk flag to the other sub machine to the transmission line 14 through the transmission interface. When the process is terminated and the channel selection switches 41 and 43 of Nos. 1 and 3 are not pressed, the determination is no and the process is terminated.

FIG. 8 is a flow chart showing the operation of the sub-device on the side where the tuning switch of the modification of FIG. 7 is not operated.

In FIG. 8, first in step S51,
The transmission interface 62 receives a signal from the transmission line 13, creates a data signal b1 and supplies it to the control circuit 93. Next, in step S52, the control circuit detects the data signal b1 to detect whether or not the signal from the transmission line 13 is the local station calling signal. When the signal is the local station calling signal, the speaker 71 is called in step S55. Output the sound, repeat the operation of step S56 until the handset is removed and hooked up,
After hooking up, the confidential talk switch 90 is turned on in step S57, and the process ends.

When the control circuit does not detect that it is not the calling signal of the own station in step S52, it is detected in step S53 whether or not it is the calling signal of another station. In the case of the calling signal of another station, in step S58. Whether or not the confidential flag is set is determined. If the confidential flag is not set, the process proceeds to step S57, and if the confidential flag is set, the process proceeds to step S59 and the confidential switch 90 is turned off. The process ends.

If it is determined in step S53 that the signal is not the calling signal of another station, it is determined in step S54 whether or not it is a confidential talk set signal, and if it is a confidential talk set signal, the confidential talk flag is set in step S60 to perform the processing. Finished,
If the signal is not the confidential set signal, the process proceeds to the determination in step S61.

In step S61, it is detected whether or not the signal from the transmission line 13 is the confidential talk reset signal. If the signal is not the confidential talk reset signal, the processing is terminated as it is, and if it is the confidential talk reset signal, step S61 is executed. In step S62, the confidential flag is set and the process ends.

According to such an embodiment, the user can select the confidential call and the conference call, which is very convenient for business use, and the channel selection switch is used for both the confidential call and the conference call. Therefore, increase in manufacturing cost can be suppressed. Since the secret call and the conference call of the remaining sub-devices can be set by operating one sub-device, there is also an effect that the setting work is easy.

FIG. 9 is a flow chart showing a second modification of the embodiment of FIG. 6 and shows the operation of the sub-device on the side that operates the tuning switch. Further, in this modification, the circuit diagram of FIG. 5 is used for the description.

FIG. 9 is a flow chart showing the operation of the second modification of the second modification of the embodiment shown in FIG.
The circuit diagram of the embodiment of FIG. 5 is also used for description.

In the embodiment in this case, by pressing the channel selection switches 41 and 45 of No. 1 and No. 5, it is switched to the secret call mode. In the secret call mode, the call address 11h set by the music selection switch is set. , 12h ... 55h
By adding 80 h to the transmission, the other sub-device is made to set the secret call and the conference call.

In FIG. 9, in step S71, it is determined whether or not any one of the tuning switches 41, 42, 43 and 44 has been pressed.
If none of the buttons 3 and 44 has been pressed, the determination is no, and the process ends, and the tuning switches 41, 42, 4
If any one of 3, 44 is pressed, the determination is yes and the process proceeds to step S72.

In step S72, the tuning switches 41 and 4 are selected.
It is determined whether or not two of the switches 2, 43, and 44 are pressed at the same time. If the two switches are pressed at the same time, the determination becomes yes and the process proceeds to step S73 to select two channels. If the switches are not pressed at the same time, the determination is no and the process moves to step S80.
In step S73, the 1st and 5th channel selection switches 41 and 4 are selected.
It is determined whether or not No. 5 is pressed. If the tuning switches 41 and 45 of No. 1 and No. 5 are not pressed, the judgment is no and the process is ended, and No. 1 and No. 5 are terminated. If the channel selection switches 41 and 45 are pressed, the determination is yes, the confidential call call flag is set in step S74, the key counter of the control circuit 93 is cleared in step S75, and the process ends. In step S72,
If the two tuning switches are not pressed at the same time, the determination is no and the process moves to step S80.

In step S80, it is determined whether or not the confidential talk call flag is set. If the confidential talk call flag is set, the determination is yes, the process proceeds to step S81, and the secret talk call flag is set. If is not set, the determination is no and step S9
Move to 1.

In step S81, it is determined whether or not the key counter of the control circuit 93 is 0. If the key counter is 0, the determination is yes and the number of the tuning switch turned on in step S82. Is stored in the upper address for secretly calling, 1 is added to the count value of the key counter in step S83, and the process is ended. Step S
In 81, if the key counter is not 0, the determination is no and the number of the tuning switch turned on in step S84 is stored in the confidential call calling lower address, the key counter is cleared in step S85, and in step S86. The secret communication call signal is output to the transmission interface 62, the secret communication call flag is reset in step S87, and the processing is ended.

In step S91, it is determined whether or not the key counter of the control circuit 93 is 0. If the key counter is 0, the determination is yes and the number of the tuning switch turned on in step S92. Is stored in the upper address of the secret call, the count value of the key counter is incremented by 1 in step S93, and the process ends. Step S9
If the key counter is not 0 in step 1, the determination is no and the number of the channel selection switch turned on in step S94 is stored in the confidential call calling lower address, and the key counter is cleared in step S95, and in step S96. The confidential interface call signal is output to the transmission interface, and the process ends.

FIG. 10 is a flow chart showing the operation of the sub-device on the side where the tuning switch of the modification of FIG. 9 is not operated.

In FIG. 10, first, in step S101, the control circuit detects the data signal b1,
Whether or not the calling signal is received is detected. If the calling signal is not received, the process is ended, and if the calling signal is received, the process proceeds to step S102.

In step S102, the most significant bit of the calling address by the calling signal is masked. Then, in step S103, the control circuit determines whether the call signal is addressed to the own station.

When the control circuit 93 does not detect that it is the calling signal of the local station in step S103,
Until the handset is detached and the handset is detached to hook up in step S104, the operation of step S105 is repeated. After hooking up, the confidential communication switch 90 is turned on in step S106 to end the process. .

When the control circuit 93 detects in step S103 that the signal is not the calling signal for the local station, step S103
At 107, the control circuit determines whether the most significant bit of the calling address becomes 1.

When the control circuit 93 detects in step S107 that the most significant bit of the calling address is 1, the confidential switch is turned off in step S108, and in step S107 the control circuit determines that the most significant bit of the calling address is 1. If not, step S
At 109, the confidential talk switch is turned on.

According to such an embodiment, the selection of the secret call and the conference call of all the sub-devices can be selected by the sub-device which calls the call, which is more convenient than the embodiment of FIG.

FIG. 11 is a block diagram showing another embodiment of the intercom apparatus according to the present invention. The same components as those of the embodiment of FIG. 1 are designated by the same reference numerals and their description is omitted. .

In FIG. 11, the auxiliary machines 231, 232 ...
45 can select one of a conference call and a parent-child call by operating the channel selection switches 41, 42 ... 45, and can store data indicating this selection in the non-volatile memory 246.

The setting method in this case is, for example, 3
If the No. 4 and No. 4 switch tuning switches 43, 44 are pressed at the same time, a conference call is made, and if the No. 3 and No. 5 switch tuning switches 43, 45 are pressed at the same time, a parent-child call is made.

According to such an embodiment, selection of conference call and parent-child call can be set by the channel selection switch, which is very convenient.

In the embodiment shown in FIG. 9, 80 h is added to the calling address set by the channel selection switch to send the calling address to the other sub-devices to set the confidential call and the conference call. If it is the same as the transmission of
It may be configured to use unexpected data. Further, in the embodiments shown in FIGS. 1 to 11, the non-volatile memory is used as the means for storing the data set by the tuning switch, but a normal memory may be used.

[0087]

As described above, according to the present invention, since the tuning switch can be used for setting the data other than the tuning, it is possible to reduce the manufacturing cost of the intercom device and to perform the operation other than the tuning. The operability of data setting is also improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a television intercom apparatus according to the present invention.

FIG. 2 is a block diagram showing the auxiliary device of FIG. 1 in more detail.

3 is an explanatory diagram showing an address memory in the nonvolatile memory of FIG. 1. FIG.

FIG. 4 is a circuit diagram illustrating the operation of the embodiment of FIG.

FIG. 5 is a block diagram of a sub-device showing another embodiment of the intercom device.

FIG. 6 is a flowchart showing an operation at the time of setting a confidential talk in the embodiment of FIG.

FIG. 7 is a flowchart showing the operation of the sub-device on the side that operates the tuning switch of the first modification of the embodiment of FIG.

FIG. 8 is a flowchart showing the operation of the sub-device on the side where the tuning switch of the modification of FIG. 7 is not operated.

FIG. 9 is a flowchart showing the operation of the sub-device on the side that operates the tuning switch of the second modification of the embodiment of FIG.

FIG. 10 is a flowchart showing the operation of the sub-device on the side where the tuning switch of the modification of FIG. 9 is not operated.

FIG. 11 is a block diagram showing another embodiment of the intercom apparatus according to the present invention.

FIG. 12 is a block diagram showing a conventional parent-child intercom device.

FIG. 13 is a block diagram showing a conventional intercom system.

[Explanation of symbols]

 10 Common Line 11 Power Supply Wiring 12 Audio Wiring 13 Transmission Wiring 14 Common Wiring 31, 32 Sub Machines 41, 42 ... 45 Channel Selection Switch 46 Nonvolatile Memory

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 1, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

[0011]

SUMMARY OF] According to such a configuration, a plurality of data setting means, by operating the channel selection switch, is performed each set of predetermined data, a channel selection switch for setting the data other than channel selection Can be used.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0044

[Correction method] Change

[Correction content]

When calling the other party, the handset is detached from the main body. As a result, the switches 47 , 6
5, the changeover switch 67 selects the first input terminal A1 and connects it to the common terminal C.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0046

[Correction method] Change

[Correction content]

When the handset of the other auxiliary device is picked up, the partner hook detection circuit 64 detects that the handset of the other auxiliary device is not hooked, and the partner hook detection signal a1 indicating the detection result. Is generated and supplied to the control circuit 63. As a result, the control circuit 63 causes the self-address data stored in the non-volatile memory 46 to be read out as the self-address data signal f1. Then, the control circuit 63
Is the read address data indicated by the data signal b1 from the transmission interface 62.
When it coincides with the self-address data signal f1 from, the calling voice signal is created and supplied to the speaker 71 through the amplifier 70 and the changeover switch 67. As a result, sound is output from the speaker 71. Submachine 31 in this state
Remove the handset from the main unit. As a result, the switches 47 and 65 are turned on, and the changeover switch 67 selects the first input terminal A1 and connects it to the common terminal C. As a result, the microphone 68 and the speaker 71 are connected to the voice wiring 12 via the amplifier 66, and conversation with another sub-device becomes possible.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0052

[Correction method] Change

[Correction content]

[0052] Step S33 is tuning switches 41 of the 1st and 3rd, 43 is determined whether or not pressed, when the channel selection switch 41 of the 1st and 3rd, 43 has been pressed Becomes YES and the confidential talk flag of the secondary device 101 is set in step S33 to end the process. If the selection switches 41 and 43 of Nos. 1 and 3 are not pressed, the determination is NO. Then, the process proceeds to step S35.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0053

[Correction method] Change

[Correction content]

In step S35, it is determined whether or not the channel selection switches 42 and 44 of Nos. 2 and 4 have been pressed, and if the channel selection switches 42 and 44 of No. 2 and 4 have been pressed, Becomes YES and the confidential talk flag of the secondary device 101 is reset in step S36 to end the process. If the channel selection switches 42 and 44 of Nos. 1 and 3 are not pressed, the determination is NO. Then, the process proceeds to step S35.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0056

[Correction method] Change

[Correction content]

When the confidential talk flags of all the sub-devices are reset, all the sub-devices are in the call state.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction content]

In step S45, it is determined whether or not the channel selection switches 42 and 44 of Nos. 2 and 4 are pressed, and if the channel selection switches 42 and 44 of No. 2 and 4 are pressed, Becomes YES and resets the confidential talk flag of this sub machine in step S46 and guides the confidential talk flag set signal for resetting the confidential talk flag to the other sub machine to the transmission line 14 through the transmission interface. When the processing is completed and the channel selection switches 42 and 44 of Nos . 2 and 4 are not pushed, the determination is no and the processing is terminated as it is.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

FIG. 1 is a block diagram showing an embodiment of an intercom apparatus according to the present invention.

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 3]

[Fig. 12]

[Figure 1]

[Fig. 2]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

FIG. 11

[Figure 8]

[Figure 9]

[Figure 10]

[Fig. 13]

Claims (8)

[Claims] 1. An intercom device capable of making a call between a plurality of sub-units commonly connected to a common wiring, wherein the intercom device is provided in each of the plurality of sub-units and a call address is operated by operating a tuning switch. A plurality of transmitting means for transmitting to the common wiring, a plurality of data setting means provided in each of the plurality of sub-devices, each of which sets a predetermined data by operating the tuning switch, A plurality of storage units that are respectively provided in the sub-devices and respectively store the data set by the plurality of data setting units; and a plurality of storage units that are respectively provided in the plurality of sub-devices and are stored by the plurality of storage units. And a plurality of control means for controlling the plurality of sub-devices, respectively. 2. An intercom device capable of making a call between a plurality of sub-devices commonly connected to a common wiring, wherein the intercom device is provided in each of the plurality of sub-devices, and a calling address is provided by operating a channel selection switch. A plurality of transmitting means for transmitting to the common wiring, a plurality of self-address setting means provided respectively in the plurality of sub-devices, by operating the tuning switch, to set the self-address of each of the plurality of sub-devices, A plurality of storage units respectively provided in the plurality of sub-devices and respectively storing the self-addresses set by the plurality of self-address setting units; and a plurality of storage units respectively provided in the plurality of sub-devices and storing the plurality of storage units A plurality of voice output means for respectively outputting a ringing tone when the self-address and the calling address from the common wiring match. Intercom apparatus according to claim. 3. An intercom device capable of communicating between a master unit and a plurality of sub units commonly connected to a common wiring, wherein the intercom unit is provided in each of the master unit and the plurality of sub units and operates a tuning switch. By doing so, a plurality of transmitting means for transmitting the calling address to the common wiring and a plurality of sub-devices respectively provided in the plurality of sub-devices are operated, and by operating the channel selection switch, the conference call mode and the secret call mode are switched and the setting is performed. A plurality of call mode setting means to perform respectively, a storage means provided in the base unit for storing the modes respectively set by the plurality of call mode setting means, and a plurality of the plurality of call mode setting means based on the modes stored in the storage means. An intercom device comprising: a control unit that controls a sub device. 4. An intercom device capable of making a call between a plurality of sub-devices commonly connected to a common wiring, wherein the intercom device is provided in each of the plurality of sub-devices and a calling address is operated by operating a tuning switch. , A plurality of transmitting means for generating the confidential communication set signal and the confidential communication reset signal and transmitting them to the common wiring respectively, a plurality of storage means provided in each of the plurality of sub-devices for respectively storing their own addresses, and the plurality of sub-devices. A plurality of voice output means, each of which is provided in the machine and outputs a ringing tone when the self-address stored in the plurality of storage means and the call address from the common wiring match, and the plurality of auxiliary machines, respectively. When the secret set signal is received when the handset is not hooked, the plurality of sub-devices are set to the call enable state. Constant, and intercom device handset, characterized by comprising a plurality of setting means for setting each of the call disabled state of the plurality of sub-machine of the case of receiving a privacy reset signal in a state of being hooked. 5. An intercom device capable of making a call between a plurality of sub-units commonly connected to a common wiring, wherein a calling address is set by operating a tuning switch provided in the plurality of sub-units. A plurality of transmitting means for synthesizing the secret story set data and transmitting each to the common wiring, a plurality of storage means respectively provided in the plurality of sub-devices, respectively storing self-addresses, respectively provided in the plurality of sub-devices, A plurality of voice output means for respectively outputting a ringing tone when the self-addresses stored in the plurality of storage means and the calling address from the common wiring match, and a received call provided in each of the plurality of sub-devices. When the confidential set data is combined with the address and the self-address and the calling address match, the plurality of sub-devices are set to the call-enabled state. A plurality of setting means for respectively setting the secret call set data to be combined with the received call address and for setting the plurality of sub-devices in the call disabled state when the self address and the call address do not match. An intercom device characterized by being provided. 6. An intercom device capable of making a call between a plurality of sub-units commonly connected to a common wiring, wherein a calling address is set by operating a channel selection switch provided in the plurality of sub-units. A plurality of transmitting means for synthesizing the secret story set data and transmitting each to the common wiring, a plurality of storage means respectively provided in the plurality of sub-devices, respectively storing self-addresses, respectively provided in the plurality of sub-devices, The intercom is characterized in that the confidential call set data is combined with the received call address and the setting means is provided for setting each of the plurality of sub-units to a call disabled state when the own address and the call address match. apparatus. 7. An intercom device capable of making a call between a plurality of sub-units commonly connected to a common wiring, wherein the intercom device is provided in each of the plurality of sub-units, and a calling address is provided by operating a channel selection switch. A plurality of transmitting means for transmitting to the common wiring, and a plurality of communication modes which are respectively provided in the plurality of sub-devices and which are operated by operating a channel selection switch to switch between the conference call mode and the parent-child call mode for setting. Setting means, a plurality of storage means provided in each of the plurality of sub-devices and respectively storing modes set by the plurality of call mode setting means, and a plurality of storages provided in each of the plurality of sub-devices An intercom apparatus comprising: a control unit that controls the plurality of sub-devices based on a mode stored in the unit. 8. The intercom apparatus according to claim 1, wherein a nonvolatile memory is used as the storage means.