JP2000023216A - Button telephone device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a power consumption of a device by making each part including a transmission circuit an active mode when connection of an ID card is detected and making each part including the transmission circuit an inactive mode when the connection of the ID card is not detected. SOLUTION: When an ID card 5 is inserted in a card I/F 42 of a button telephone set 3, a CPU 33 makes the button telephone set 3 an active mode and allows its use when an ID number of the ID card 5 coincides with an ID registered in a memory 38. When the use of the button telephone set 3 is completed and the ID card 5 is pulled out, the CPU 33 stops data transmission to a main device, clears display of an LCD display circuit 39 and each LED of an LED display circuit 40, stops operation of a tone ringer 41 and the CPU 33 itself enters a standby mode of a low power consumption mode. As long as the ID card 5 is not inserted in the button telephone set 3, each display goes out, transmission from a speaker SP of the tone is not performed either, and the power consumption of the button telephone set 3 is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone device comprising a main device containing an outside line and a key telephone connected to the main device.

[0002]

2. Description of the Related Art A key telephone apparatus of this type comprises a main apparatus for accommodating an outside line and a plurality of key telephones connected to the main apparatus. Here, when an outside line key and a dial key are sequentially operated to make an outside line call using the key telephone, these operation data are transmitted to the main device side.
Upon receiving these operation data, the main unit captures the outside line specified by the operated outside line key, and transmits a dial signal based on the operation data to the captured outside line.
As a result, the other party is called. When the other party answers the call, the call path switch is controlled to connect a call path between the call key telephone and the corresponding outside line, and as a result, the outside call is performed by the call key telephone.

When an incoming call arrives from an outside line, the main unit transmits incoming call control data to each key telephone, and causes each key telephone to display an incoming call and ring. When receiving response data indicating a response to the incoming call from any of the key telephones, the main unit controls the telephone line switch to connect the telephone line between the response key telephone and the corresponding external line. As a result, the incoming call is made by the key telephone.

On the other hand, when any one of the key telephones goes off-hook to dial the extension of the other key telephone and dials the extension number, these operation data are similarly transmitted to the main unit. Upon receiving the operation data, the main unit calls the extension of the key telephone set indicated by the extension number.
When the main unit detects the response of the called button telephone set which has been called by the extension, the main unit controls the communication path switch to establish a call path between the called button telephone set and the calling button telephone set. An extension call is made between the telephone and the call button telephone.

[0005]

In such a key telephone apparatus, power is generally supplied from the main apparatus to each of the key telephone apparatuses. However, conventionally, power is also supplied from the main apparatus to unused key telephone apparatuses. There has been a problem in that power is wasted and wasteful power is consumed. In an office, for example, in order to avoid wasteful power consumption of such a device, the power supply to the entire key telephone device is stopped by turning off a main power supply for supplying power to the main device at night. However, in such a case, the power switch must be turned off every time, which is troublesome, and there is a problem that the power switch is forgotten to be turned off.
Accordingly, it is an object of the present invention to suppress unnecessary power consumption of a key telephone device and to reduce power consumption of the device without requiring an operation of a power switch.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a transmission apparatus having a main device containing an external line, having at least a transmission circuit connected to the main device and being supplied with power from the main device. A key telephone device comprising a key device and at least one key telephone for transmitting a signal through the key telephone has an ID card in which an ID number of a user of the key telephone is recorded.
Detecting means for detecting the presence or absence of the connection of the card, and when the detection means detects the connection of the ID card, the respective parts including the transmission circuit of the key telephone are set to the operation mode.
When the connection of the D-card is not detected, each unit including the transmission circuit of the key telephone is set to a non-operation mode. Further, the main device comprises a disconnection detecting means for detecting disconnection of the key telephone, and a control means for shifting to a predetermined mode when disconnection of all the key telephones is detected by the disconnection detecting means. It is. The disconnection detecting means detects disconnection of the key telephone based on non-transmission of a signal from the key telephone.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the key telephone apparatus according to the present invention. In the figure, a key telephone apparatus has digital office lines (hereinafter, ISDN lines) # 1, #
2 and analog office line (hereinafter analog outside line) # 3, # 4
And a key telephone (hereinafter referred to as a "child device") 3 _{1 to} 3 _n connected to the main device 1 as an extension.

The main unit 1 includes ISDN lines # 1 and # 2
Digital line unit 1 which is an interface between
1 _1, 11 _2, each of the analog office line # 3, # 4 each station line circuit 12 _1, 12 ₂ analog station line unit 12 having an interface between are provided. Here, the digital central office unit 11 includes a line termination circuit (DSU) 11A for terminating an ISDN line, a transformer T, and an ISDN.
The basic interface controller 11B is a basic interface (2B + D).

The main unit 1 also includes a synchronization unit 13 for detecting a clock signal (not shown) from the ISDN line and synchronizing the unit with the ISDN line, a recording / reproducing unit 14 for recording and reproducing audio signals, and an external line. A PB receiver 15 for receiving a PB signal arriving at the apparatus via the PB signal; a hold sound circuit 16 for transmitting a hold sound to an external line when the external line is held;
A BT detection circuit 17 for detecting a busy tone (BT) from an outside line is provided.

The main unit 1 also has an ISDN line B
Transmission is performed between a B channel control unit 18 for controlling the transmission timing of two communication channels 1 and B2 on the communication path, a time-division multiplex communication path switch 19 which is a communication path, and the slave units 3 _{1 to} 3 _n. The transmission circuit to be executed, the extension circuits 21 _{1 to} 21 _n which are interfaces with the slave units 3 _{1 to} 3 _n , the control unit 22 for controlling the above units, the storage unit 23 for storing data, and the power supply to the units of the main device 1 A power supply circuit 24 for supplying is provided. Here, the output of the power supply circuit 24 includes the control unit 2
2 is connected and the switch 25 is controlled to be in a closed state, whereby the output voltage V of the power supply circuit 24 is supplied to each section of the main device 1. The main device 1 is provided with a recovery switch 26. When the recovery switch 26 is operated when the key telephone device is in a night mode described later, the main device 1 is changed from the night mode to the normal operation mode. Return to.

On the other hand, as shown in FIG. 2, the slave unit 3 transmits power to and from the main unit 1 and extracts power supplied from the main unit 1 via a transmission line to extract each part of the slave unit. , A communication circuit 32 and a CPU 33 for controlling the slave unit 3. Here, operation units such as an outside line key 34, a dial key 35, a function key 36, and a hook switch 37 are connected to the CPU 33. The CPU 33 includes a memory 38 and an LCD display circuit 3.
9, an LED display circuit 40 such as an outside line lamp, and a tone ringer 41 for outputting a ring tone or the like are connected. And
The ringtone output from the tone ringer 41 is a speaker S
Sent from P. Further, the CPU 33 has a card I /
F (card interface) 42 is connected. The card I / F 42 accommodates the ID card 5. Where I
The D card 5 only needs to record an ID number, and may be any type of card, such as a magnetic card or an IC card. The card I / F 42 and the ID card 5 may be in contact with each other or may not be in contact with each other.

In the key telephone apparatus constructed as described above, in order to make an outgoing call from the handset 3,
When the outside line key 34 and the dial key 35 are sequentially operated, these operation data are sequentially transmitted to the main device 1 via the transmission circuit 31. When receiving the operation data via the extension circuit 21 and the transmission circuit 20, the control unit 22 of the main device 1 sends the operation data to the digital local line unit 11 or the analog local line unit 12 designated by the operated external line key. To capture the corresponding outside line and to output a dial signal based on the operation data through the captured outside line to I
Send to SDN line or analog office line. As a result, the other party is called. When the other party answers the call, the communication path between the calling handset 3 and the corresponding external line is connected by controlling the time-division multiplex communication path switch 19. As a result, the outside line calling of the handset 3 starts. Is done.

When incoming calls arrive from an ISDN line or an analog office line, these incoming calls are transmitted to the control unit 22 via the digital office unit 11 or the analog office unit 12. The control unit 22 transmits the incoming control data to each child device 3 ₁ to 3 _n through the transmission circuit 20 and the extension circuit 21, thereby terminating the display or incoming ringing each child machine 3 ₁ to 3 _n. When response data indicating a response to the incoming call from any of the slaves 3 is received via the transmission circuit 20,
The control unit 22 connects the communication path between the answering slave 3 and the corresponding outside line by controlling the time division multiplex communication path switch 19, and as a result, the answering machine 3 starts the outside line answering call.

On the other hand, when one of the slave units goes off-hook and dials an extension number to call the other slave unit, the operation data is transmitted to the main unit 1 in the same manner. The main device 1 transmits the operation data to the extension circuit 21 and the transmission circuit 2.
When the call is received via "0", an extension call to the other handset indicated by the extension number is performed. When detecting the response of the called sub-unit which has been called by the extension, the control unit 22 sets the time-division multiplex communication path switch 1
9 is controlled to connect a call path between the called slave and the calling slave, and as a result, an extension call is started between the called slave and the calling slave.

By the way, the ID card 5 inserted into the slave unit is carried by each user who uses each slave unit 3, and stores an ID number unique to the user. Here, when the ID card 5 is inserted into the card I / F 42 of the child device 3, the CPU 33 of the child device 3 reads the ID number of the ID card 5 and stores the ID number registered in the memory 38 in advance. When the value is matched, the slave unit 3 is set to the operation mode and its use is permitted, so that the user can make an outgoing call or make an extension call via the slave unit 3. as a result,
Slave unit 3 performs normal processing such as data transmission processing with main apparatus 1 and processing of data received from main apparatus 1.

However, when the use of the slave unit 3 is completed and the ID card 5 is pulled out from the slave unit 3, the CPU 33 of the slave unit 3
Sets a non-operation mode in which data transmission with the main device 1 is stopped, and the display of the LCD display circuit 39 and the display of each LED of the LED display circuit 40 are cleared (turned off) and the driving of the tone ringer 41 is stopped. The CPU 33 itself enters the standby mode. In this standby mode,
CPU 33 is inactive and therefore consumes less power. In this mode, even if the user operates a key or the like, the CPU 33 does not detect the key.

In the standby mode, the CPU 33 is activated by a predetermined time of an internal timer (not shown). When activated, the CPU 33 detects only whether or not the ID card 5 is inserted into the card I / F 42, and
When the insertion of the C card 5 into the card I / F 42 is detected,
The standby mode is canceled to return to the normal mode in which the use of the slave unit 3 is permitted, and normal processing such as data transmission processing with the main apparatus 1 is performed. Note that the CPU in the standby mode
It is also possible to notify the insertion of the ID card 5 to the CPU 33 as an interrupt. In this case, when the ID card 5 is inserted, the card I / F 42 outputs an interrupt signal to the interrupt terminal of the CPU 33 shown in FIG. Output to INT. Thereby, the CPU 3
3 is from standby mode which does not allow the use of slave unit 3,
The operation mode returns to the operation mode in which use of the slave unit 3 is permitted, and normal processing such as data transmission processing with the main apparatus 1 is performed.

As described above, whether or not the slave unit 3 can be used is determined depending on whether or not the ID card 5 is inserted into the slave unit 3. Unless the ID card 5 is inserted into the slave unit 3, the unused slave unit is used. C
Put the PU 33 in a standby mode of a low power consumption mode,
In addition, since each display is turned off, the tone is not transmitted from the speaker SP, and the data transmission is stopped, the power consumption of the unused slave unit can be reduced. In addition, when there are many such unused slaves in the apparatus, the power consumption of the entire apparatus can be significantly reduced.

Meanwhile, the main device 1 when performing each child machine 3 ₁ to 3 _n and data transmission, all child without being inserted ID card 5 to all handsets 3 ₁ to 3 _n machine 3 ₁ to 3 _n is an unused state, therefore the data transmission of all of the sub-terminal 3 ₁ to 3 _n can not receive the data from the stop each handset,
The apparatus is set to a night mode or a power down mode in which power supply to the main apparatus 1 is stopped. Thus, the power consumption of the device can be significantly reduced. Note that, in the night mode, when an outside line arrives, only an answering response process for making the recording / reproducing unit 14 record a message on the calling side in response to the incoming call is executed.

FIGS. 3 and 4 are flowcharts showing an operation for reducing the power consumption of the key telephone apparatus. First, the operation of the main part of the slave unit 3 will be described with reference to the flowchart of FIG. When the CPU 33 of the child device 3 is started by supplying power from the main device 1 to the child device 3, the CPU 33 performs initial processing in step S1. Then CPU3
3 determines whether or not the ID card 5 is inserted into the slave unit 3 through the card I / F 42 in step S2,
If the D card 5 is inserted, a data transmission process is performed with the main device 1 via the transmission circuit 31 in step S3.

When data to be processed is received from the main apparatus 1 as a result of the data transmission, the received data processing is executed in step S4. That is, when the data received from the main device 1 indicates, for example, an incoming call from an outside line, display processing on the LCD display circuit 39, LED incoming display processing on the LED display circuit 40, and ring tone driving processing on the tone ringer 41 are performed. When the reception data processing is completed, the CPU 33 detects each key operated by the user, and when an operation key is detected, executes normal processing such as storing the operation data in a transmission buffer (not shown) in step S5. .
Then, returning to step S2, the operation data of the transmission buffer is transmitted to the main device 1 in the transmission process with the main device in step S3 via "Y" of "ID card present" in step S2.

As long as the ID card 5 is inserted in the slave 3, the CPU 33 repeatedly executes the transmission processing with the main unit in step S3, the reception data processing in step S4, and the normal processing in step S5. Here, if the ID card 5 is removed from the slave unit 3 during the repetitive execution of such processing, the “ID card present” in step S2 becomes “N”, so that the CPU 33 performs data transmission with the main device 1. The display is stopped, and the display of the LCD display circuit 39 and the display of each LED of the LED display circuit 40 are cleared in step S6, and the tone ringer 41 is cleared in step S7.
Is stopped, and the transmission of the tone from the speaker SP is stopped. After disabling each part in this manner, C
The PU 33 sets itself to the above-described standby mode in step S8. Thereby, the power consumption of the slave unit 3 can be significantly reduced.

As described above, the CPU 33 in the standby mode outputs the insertion of the ID card 5 as an interrupt and returns to the operation mode. That is, the card I /
F42 is a card I / F4 when the ID card 5 is inserted.
From 2, an interrupt signal is output to the interrupt terminal INT of the CPU 33. When activated by this interrupt signal, the CPU 33
In step S9, it is determined whether or not the D card 5 is set (inserted) through the card I / F. When the setting of the ID card 5 is detected, step S10 is performed.
To release its own standby mode and return to step S2. Accordingly, the CPU 33 repeatedly executes the transmission processing with the main apparatus in step S3, the reception data processing in step S4, and the normal processing in step S5 via "Y" with the ID card in step S2.

Next, the operation of the main unit 1 when reducing the power consumption of the key telephone apparatus will be described with reference to the flowchart of FIG. When the power is turned on to the main apparatus 1, FIG.
In step S21 of (a), the control unit 22 of the main device 1 executes an initial process. Thereafter, the control unit 22 proceeds to step S
Performs data transmission processing between the slave unit 3 ₁ to 3 _n through the transmission circuit 20 at 22, it is determined in step S23 whether the data can not be received from all handsets 3 ₁ to 3 _n.

Here, if data can be received even from one slave unit, the determination in step S23 is "N", and in this case, processing of the received data received from the slave unit 3 is performed in step S24. Here, when the operation data received from the slave unit 3 is, for example, operation data for transmitting an outside line, the control unit 22 performs the outside line transmission processing of capturing the corresponding outside line and sending a dial signal to the captured outside line. Execute as processing. Thereafter, when an incoming call arrives from another outside line, normal processing such as storing incoming control data for notifying the incoming call to the slave unit in a transmission buffer (not shown) is performed in step S25, and the process returns to step S22. In the transmission process with the slave unit in S22, the incoming call control data in the transmission buffer is transmitted to the slave unit side, and the slave unit is displayed as an incoming call.

While the “transmission process with the slave unit” in step S22, the “reception data process” in step S24, and the “normal process” in step S25 are sequentially and repeatedly executed, the IDs of all the slave units 3 _{1 to} 3 _n are repeatedly executed. When the card is removed and all the slave units 3 _{1 to} 3 _n enter the non-operation mode, all the slave units 3 ₁ to 3 _n
3 _n stops data transmission. For this reason, since the control unit 22 cannot receive data from all the slaves when performing the transmission processing with the slaves in step S22, the control unit 22 determines “No data received from all slaves” in step S23 to be “Y”. .

In this case, the control unit 22 determines in step S26 whether the conditions for entering the night mode described above are satisfied.
If the condition is not satisfied, the process returns to step S22 to perform the transmission process with the slave unit. That is, in this case, the control unit 2
2 starts an internal timer for a fixed time (not shown), and during this time, performs transmission processing with the slave unit in step S22 to monitor the presence / absence of data received from the slave unit, and within this fixed time, all the slave units If the received data is not obtained, the process shifts to the night mode and the first process for performing the night mode process in step S27 is executed.

When the mode is shifted to the night mode, the control unit 22 determines in advance that the received data from all the slave units has not been obtained and the determination in step S23 is "Y".
Is compared with the time of the clock circuit (not shown), and if the time is not within the night time zone, the process returns to step S22 to perform transmission processing with the slave unit, and the time of the clock circuit is If within the night time zone, step S27
The second processing for shifting to the night mode processing of the above can also be executed. In this case, during the night mode, the night mode processing may be continued even if the time of the clock circuit has passed the night time zone. The mode may be returned.

When the mode is shifted to the night mode, the control unit 22 sets the night time zone stored in the storage unit 23 in advance when the reception data from all the slave units cannot be obtained for a predetermined time of the internal timer. If the time is compared with the time of the clock circuit and the time is not within the night time zone, the process returns to step S22 to perform the transmission process with the slave unit. If the time of the clock circuit is within the night time zone, the process proceeds to step S27. A third process for shifting to the night mode process may be executed. In this case, during the night mode, the night mode processing may be continued even if the time of the clock circuit has passed the night time zone. The mode may be returned.

In the night mode process of step S27, when the control unit 22 detects an incoming call from an outside line, the control unit 22 automatically responds to this, sends a response message from the recording / reproducing unit 14 to the calling side, and sends a message to the calling side. Recording and playback unit 1
4 is performed. Even during such a night mode, the control unit 22 sets the recovery switch 26 in step S28.
Of the operation of the recovery switch 26, and intermittently performs transmission processing with the child device to determine whether or not there is data received from the child device in step S29, and operates when the operation of the recovery switch 26 by the user is detected. The mode returns to step S22 and normal processing is resumed. When the ID card is inserted into any one of the slave units, reception data is obtained from the slave unit, and when the determination of “data reception from slave unit” in step S29 becomes “Y”, the operation mode is set to the operation mode similarly to step S22.
To resume the normal processing. When the time of the clock circuit elapses the night time zone, it is possible to return from the night mode to the operation mode in which normal processing is performed as described above. As described above, when the ID card is pulled out from all the slaves and becomes unused, the main device 1 shifts to the night mode and performs the night mode processing, and during this time, the main device 1 constantly performs transmission with the slave. Therefore, the power of the entire key telephone device can be reduced.

FIG. 4B is a flowchart showing another example of the operation of the main unit 1. Here, the operation of each of steps S31 to S36 in FIG.
This is the same as the operation in each of steps S21 to S26 in FIG. That is, in the operation mode, the “transmission processing with the child device” in step S32, the “reception data processing” in step S34, and the “normal processing” in step S35 are sequentially and repeatedly executed. Then, such processing for all of the sub-terminal 3 ₁ to 3 _n ID card is withdrawn while continuing all handsets 3 ₁ -
When 3 _n is inoperative mode, all handsets 3 ₁ to 3 _n is a data transmission stop, "no reception data from all child machine" in step S33 is "Y". Here, the control unit 22
Determines in step S36 whether the conditions for entering the system power down mode are satisfied. If the conditions are not satisfied, the process returns to step S32 to perform transmission processing with the slave unit.

The condition for entering the system power down mode is the same as the condition for entering the night mode described above. The control unit 22 activates an internal timer (not shown) for a certain period of time, and during this time the child timer is set in step S32. By performing a transmission process with the mobile device, the presence or absence of data received from the mobile device is monitored. If the received data from all the mobile devices is not obtained within the predetermined time, the process proceeds to the system power down process in step S37. In the system power down process, the control unit 22
Controls the switch 25 to open. Then, power is not supplied from the power supply circuit 24 to each part of the main device 1, and the power of the entire key telephone device is turned off. As described above, when the ID cards are pulled out from all the slave units and become unused, the main unit 1 shifts to the system power down mode and turns off the power of the entire key telephone apparatus. It can be set to “0”. When power is restored to the device in such a power failure state,
The user manually closes the switch 25. Then
Since power is supplied from the power supply circuit 24 to each part of the main device 1 and power is supplied from the main device 1 to each slave unit, the processing of the entire device is restarted.

[0033]

As described above, according to the present invention, there is provided an ID card for recording an ID number of a user of a slave unit,
When the ID card is connected to the slave unit, each unit including the transmission circuit of the slave unit is set to the operation mode, and when disconnection of the ID card is detected, each unit including the transmission circuit of the slave unit is set to the non-operation mode. Therefore, it is possible to suppress wasteful power consumption of an unused slave unit to which the ID card is not connected, and thus it is possible to reduce wasteful power consumption of the entire apparatus. Also,
When the main unit detects disconnection of all slave units, it shifts to a predetermined mode such as night mode or system down mode, so when all slave units are not used, the power consumption of the entire device is further reduced. it can. In addition, since the main unit detects the disconnection of the slave unit based on the non-transmission of the signal of the slave unit, the disconnection of the slave unit can be accurately detected, and therefore, the unused slave unit can be accurately detected. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram of a main device constituting a key telephone device of the present invention.

FIG. 2 is a block diagram showing a configuration of a key telephone.

FIG. 3 is a flowchart showing an operation of a main part of the key telephone.

FIG. 4 is a flowchart showing an operation of a main part of the main device.

[Explanation of symbols]

1 ... main unit, 3, 3 _{1 to} 3 _n ... key telephone (child unit),
5 ID card, # 1, # 2 Digital office line (ISDN
#, # 4: analog office line, 14: recording / playback unit, 19: time-division multiplex communication path switch, 20, 31: transmission circuit, 21 _{1 to} 21 _n ... extension circuit, 22: control unit, 2
3 ... storage unit, 24 ... power supply circuit, 25 ... switch, 26 ...
Recovery switch, 33 ... CPU, 34 ... Outline key, 35 ...
Dial keys, 38: memory, 39: LCD display circuit,
40 ... LED display circuit, 41 ... Tone ringer, 42 ... Card I / F, SP ... Speaker.

Claims (3)

[Claims] 1. A main unit containing an external line, and at least one unit connected to the main unit, supplied with power from the main unit, and having at least a transmission circuit and transmitting signals to and from the main unit via the transmission circuit. A key telephone apparatus comprising: a key telephone; an ID card for recording an ID number of a user of the key telephone; a key telephone; Means for setting each unit including the transmission circuit of the key telephone set to the operation mode when the connection of the card is detected, and for setting each unit including the transmission circuit of the key telephone set to the non-operation mode when the connection of the ID card is not detected by the detection unit. A key telephone device comprising: 2. The apparatus according to claim 1, wherein the main unit includes a non-connection detecting means for detecting non-connection of the key telephone, and a predetermined mode when the non-connection detecting means detects non-connection of all the key telephones. And a control means for shifting to (1). 3. The key telephone apparatus according to claim 2, wherein the non-connection detecting means detects non-connection of the key telephone based on non-transmission of a signal from the key telephone.