JPH05920B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a button telephone device, and more particularly to a button telephone device that backs up a message recording device installed in the device in the event of a power outage.

[Prior art and its problems] Conventionally, a message recording device housed in a button telephone device records the voice from the button telephone or central office line as a message, and can reproduce the message from any button telephone. It has several functions.

In addition, in order to make the device itself more compact, it is common to use an audio recording and playback LSI to store audio in dynamic RAM after A/D conversion, so that once a recorded message is lost even during a short power outage, Since it is not functionally desirable for the power to disappear, backup power is supplied for a certain period of time even during a power outage.

Conventionally, for backup in the event of a power outage for a message recording device, the installation of a backup battery for power outages in the main unit of the system is an option, and if it is not installed from the beginning, it is necessary to install a dedicated backup battery for power outages in the message recording device. It was hot. For example, when the current consumption of a message recording device is about 50 mA, if a dedicated battery is installed for 30 minutes of backup, the cost will increase by 15% to 20%, and the device cannot be made smaller.

In addition, when a back-up battery for system power outages is first installed in the main device, a method is adopted in which power is supplied from it to a message recording device, etc.;
Because RAM was installed, current consumption was high, and the system needed a large-capacity backup battery for power outages.

For example, if the message recording device consumes about 50 mA of current, and the current consumption of the entire system excluding the message recording device is about 50 mA, the backup battery for system power outages will be used when the message recording device is not configured in the system. Twice the capacity was required.

As described above, the conventional backup system for message recording devices during power outages has the disadvantage that the key telephone device is expensive and large.

[Object of the Invention] The object of the present invention is to provide a button telephone capable of backing up a message recording device during a power outage only when a predetermined function is activated without increasing the capacity of the battery. The object of the present invention is to provide a method for backing up equipment during a power outage.

[Structure and operation of the invention] In order to achieve this object, the present invention provides a button telephone device in which a message recording device 3 is housed. A backup power supply 10 for power outages that performs backup power supply at times, and a first control means 11 that sends out set or reset data as a backup control flag in order to perform backup power supply under predetermined conditions at the time of the power outage; The device 3 includes an input port I for detecting a power outage, and an input port I for detecting a power outage.
power supply determining means for receiving set or reset data from the control means 11 and determining whether or not to perform backup power supply; and an output port for transmitting a control output in response to the determination by the power supply determining means. a second control means 32 including O; and when the power outage is detected, the power outage backup power supply 1
0 to the second control means 32 and the control output from the output port O of the second control means 32. power supply backup means 30 including second power supply circuits Q4 and Q5 for supplying the output of the power supply 10 to the recording means 34 and 35; the second control means 32 detects a power failure; When it is determined that power supply is necessary by looking at the backup control flag, power is supplied to the recording means 34 and 35 from the power failure backup power supply 10 for a certain period of time.

[Example] The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing an embodiment of the message recording and reproducing device of the present invention, and FIG. 3 is a block diagram of the present invention provided in the main device 1. Power supply backup circuit A during power outage
4 is a specific circuit diagram showing an embodiment of the power backup circuit B in case of a power outage according to the present invention, which is provided in the message recording and reproducing device 3. FIG.

Now, let us take as an example a button telephone apparatus as an embodiment of the telephone apparatus of the present invention.The telephone apparatus is connected as shown in FIG. In Figure 1, 1 is the main device, 2 is a button telephone, 3 is a message recording and reproducing device,
4 is a public telephone network, 5 is a subscriber's telephone at the other end, L1 and L2 are lines, L3 is an extension line, L4 is a data transmission line, and L5 is a power supply line. The main device 1 consists of a power outage backup circuit A10, a microprocessor (CPU) 11 (first control means), a data transmission circuit 12, a power supply circuit (main power supply) 13, an extension circuit 14, and the like. The button telephone 2 has a power backup circuit B20 and a hybrid circuit in case of a power outage.
It consists of a communication path IC 21 including a HYB, a handset 22 including a transmitter T and a receiver R, an amplifier 24, a speaker 25, a data transmission circuit 26, a microprocessor (CPU) 27, a keyboard 28, and the like.

Furthermore, the message recording and reproducing device 3 includes a power supply backup circuit B30 during power outage, a data transmission circuit 31, a microprocessor (CPU) 32 (second control means), a connection switching circuit 33, a voice recording and reproducing LSI 34,
Audio data memory DRAM35 (dynamic
RAM), control lines 36, 37, etc. This audio recording/reproducing device 34 and the audio data memory 35 constitute a recording means.

In this way, the message recording and reproducing device 3 is connected to the main device 1 by a branch like the key telephone 2 in this embodiment, and all states of the key telephone device are controlled by data transmission within the main device 1. circuit 12
This is performed by the microprocessor 11 via the microprocessor 11.

Next, the general recording and reproducing operation will be explained based on FIGS. 1 and 2.

When the operator wants to record an extension, when the operator lifts up the handset 22 using the button telephone 2, the microprocessor 27 controls the switch 23 to close the switch 23, and a line selection means (not shown) closes the switch 23. When the SK is activated to switch to the chain line side and capture the extension line L3, and the keys on the keyboard 28 are operated according to a predetermined operating procedure, the key operation signals are taken into the microprocessor 27 from the keyboard 28. , after internal processing, the microprocessor 28 transfers the control data to the data transmission circuit 26 and the data transmission line L.
4 to the main device 1. The microprocessor 11 of the main device 1 takes in this control data via the data transmission circuit 12, and after internal processing, transmits the state control data via the data transmission circuit 12 to the data transmission line L4.

The transmitted data is taken into the microprocessor 32 via the message recording and reproducing device 3, that is, the data transmission circuit 31 shown in FIG. Upon receiving the state control data, the microprocessor 32 closes the switch 303 and activates the audio recording/playback LSI 34 via the control line 36. The outgoing voice signal from the handset 22 of the button telephone 2 in FIG. 1 is input to the voice recording and playback LSI 34 via the communication path IC 21, the contact SK, the extension L3, the switch 303 and the amplifier 305 in FIG. After conversion, it is stored in the DRAM 35 of the audio data memory. At this time, for excessively transmitted audio signals, a level detector 306 and an amplifier 307 are used.
The signal is brought to an appropriate level by the AGC circuit and input to the audio recording/playback LSI 34.

When performing extension playback, after performing the same data transmission as described above, the microprocessor 32 closes the switch 304 and activates the voice recording/playback LSI 34 via the control line 36. As a result, the audio data is sent from the DRAM 35 of the audio data memory, is D/A converted by the audio recording/playback LSI 34, and then sent to the amplifier 308, the switch 304, and the extension LSI.
3. It can be heard from the handset 22 via the communication path IC 21 of the key telephone 2.

In this case, when the preset time comes, the previously recorded content is transmitted through extension L3, through the amplifier 24 of the designated key telephone 2, and then played back from the speaker 25 to give a wake-up call. It can also be used as

Next, the operation of recording the voice of the other subscriber 5 via the public telephone network 4 will be explained.

In FIGS. 1 and 2, when an operator performs a key operation according to a predetermined operating procedure while talking with a subscriber 5 on an outside line via a public telephone network 4 from a key telephone 2, Key operation signals are taken into the microprocessor 27 from the keyboard 28. Then, the microprocessor 27 transfers the control data to the data transmission circuit 26 and the data transmission line L4.
The data is sent to the main device 1 via the . The microprocessor 11 of the main device 1 takes in this control data via the data transmission circuit 12, and after internal processing, transmits the state control data via the data transmission circuit 12 to the data transmission line L4. The transmitted data is taken into the microprocessor 27 via the data transmission circuit 26 of the button telephone 2. Upon receiving the status control data, the microprocessor 27 controls the switch 23 to open the switch 23, cut off the outgoing audio signal from the transmitter T of the handset 22, and
With the handset 22, only the voice of the other party can be heard. Further, the same data is taken into the microprocessor 32 via the data transmission circuit 31 of the message recording and reproducing device 3. Upon receiving the state control data, the microprocessor 32 controls the DC connection circuit 301 to connect the external lines L1 and L2 with DC current, closes the switch 311, and activates the audio recording/playback LSI 34 via the control line 36. The voice signal of the other party is transmitted through the public telephone network 4, the main device 1, the DC connection circuit 310, the transformer 302, and the outside lines L1 and L2.
an amplifier 310 and a switch 311 for amplifying the audio signal prepared for recording the call of the other party;
Finally, the audio is recorded and played back via the amplifier 305.
Input to LSI34. and play audio recording
The audio signal input to the LSI 34 is A/D converted and stored in the audio data memory DRAM 35. In this way, the voice of the intended caller is recorded. In addition, button telephone 2
When the operator performs a hold operation and sends a message while on hold while having an outside line call with the other subscriber 5 via the public telephone network 4, the microprocessor 32 in FIG. is closed and the DC connection circuit 301 is started, thereby connecting the external lines L1 and L2 with DC current. And control line 3
When the audio recording/playback LSI 34 is activated in step 6, audio data is sent out from the audio data memory DRAM 35, is D/A converted by the audio recording/playback LSI 34, and is sent to the amplifier 308, switch 319, transformer 302, and DC connection circuit 301. , are sent to the public telephone network 4 via external lines L1 and L2 and the main device 1.
In this case, it can also be used as an answering machine for answering incoming outside calls. With these functions, conventional functions such as a family message board, a wake-up call, and an answering machine for answering outside line messages can be realized.

The power backup operation during a power outage when the device of the present invention, which performs the above-described circuit operation, experiences a power outage will be explained in detail with reference to the drawings shown in FIGS. 3 and 4.

FIG. 3 shows an embodiment of the present invention, which shows a power outage backup circuit A10 and a power supply circuit 13 provided in the main device 1. One power outage backup battery 10 used
1 and a voltage stabilizing circuit 102 for the main device 1.

FIG. 4 shows a button telephone 2 in an embodiment of the present invention.
and power outage power backup circuits B20 and 30 used in the message recording and reproducing device 3. It is configured to include a voltage stabilization circuit 202.

In FIGS. 3 and 4, in the event of a power outage, the output of the backup battery 101 for power outage is supplied to the microprocessor 11 of the main unit 1 via the voltage stabilization circuit 102 and to the microprocessor 11 of the main unit 1 via the voltage stabilization circuit 202. The microprocessor 27 of the telephone 2 and the microprocessor 32 of the message recording and reproducing device 3, as well as the voice recording and reproducing LSI (hereinafter referred to as LSI) 34 of the message recording and reproducing device 3 via control transistors Q3 and Q5, and voice data memory. (Dynamitsuku
(RAM) DRAM (hereinafter referred to as DRAM) 35 is supplied with power.

Taking the power failure power backup circuit B30 provided in the message recording and reproducing device 3 as an example, the microprocessor 32 of the message recording and reproducing device 3 is an input port for detecting a power outage. It sometimes goes high, but normally it goes low. 0 is LSI34 and DRAM3
This is an output port that can control ON/OFF of power supply during power outage for 5, and the output is always low except during power outage.

The microprocessor 32 also has a backup control flag in the memory managed by the microprocessor 32, which is set and reset by data received from the microprocessor 11 of the main device 1 via the control line 37. The microprocessor 32 then looks at this backup control flag and determines not to perform backup power supply, for example, when it is set, that is, when the power is on.

If the power supply circuit 13 of the main device 1 loses its output due to a power outage, the microprocessor 11 receives power from the power outage backup battery 101, while the microprocessor 32 of the message recording and playback device 3 self-operates during the power outage. A flag for determining whether or not to activate the function, that is, backup function required=set or backup function not required=reset data is transmitted to the microprocessor 32 via the data transmission line L4.

As mentioned above, the microprocessor 11 of the main device 1 controls and manages the state of the entire system including the recording and playback operation, and also controls the microprocessor 32 to set and reset the backup control flag. Data is sent to the microprocessor 32 under the following conditions, for example.

(a) Conditions for sending the set data (a) When the power is turned on and initial processing is performed (b) When the message recording device performs recording processing (c) Recording is made in the DRAM 35 of the message recording and playback device 3 (b) Conditions for sending reset data (a) When playback is performed more than a predetermined number of times during playback processing by message playback operation (b) No recording is made in the DRAM 35 of the message recording and playback device 3 When a power outage occurs in the above condition and the voltage (+V) sent via the power supply line L5 (terminals 103, 104) is cut off, the transistor Q1 turns OFF and the input port I becomes High, so the microcontroller Processor 32 can detect a power outage. Also, transistor Q2 turns on and transistor Q3 turns on.
Therefore, power is automatically supplied to the microprocessor 32 from the power failure backup battery 101 of the main device 1 via the terminals 103 and 104 via the diode D5. Here, Q1, Q2, and Q3 constitute a first power supply circuit for power failure. When the microprocessor 32 detects a power outage, the microprocessor 32 checks the backup control flag sent from the main device 1 via the data transmission line L4 as described above, and if it is in the set state, outputs the output port O.
outputs High, turns on transistor Q4, turns on transistor Q5, and connects LSI34.
Power is supplied to the DRAM 35 from the power outage backup battery 101 of the main device 1 via the diode D6 during a power outage, and the message recording device 3 can be backed up for a certain period of time predetermined based on the system configuration, such as message recording. In the case of 30 minutes, after counting 30 minutes, output a low signal to output port O, turn off transistors Q4 and Q5, stop power supply from backup battery 101 for power outage, make each output port inactive, and perform software processing. enters an infinite loop and stops. Here, Q4 and Q5 constitute a second power supply circuit for power failure.

On the other hand, if the backup control flag is in the reset state, the microprocessor 32 is connected to the LSI 34.
Power is not supplied to the DRAM 35 during a power outage, and each output port is rendered inactive, and the software processing enters an infinite loop and stops. Incidentally, FIG. 5 is a flow chart showing these operations of the microprocessor 32. Here, microprocessor 3
After 2 stops processing, it starts processing again when a hard reset input is received by turning on the power.

In this way, the backup operation of the message recording and reproducing device 3 at the time of a power outage is not designed to supply power at all times during a power outage during any function operation, but only during a predetermined function operation, for example, If a message is recorded, it can be backed up for a predetermined period of time during a power outage, etc., so that the capacity of the power outage backup battery 101 for the entire system to cover the power consumed for power supply backup of the message recording and playback device 3 is reduced. less.

In the embodiment shown in the first figure, an example has been described in which the message recording and reproducing device 3 is provided separately from the button telephone 2.
This can be done in the same way even if the device is integrated into the device.

In addition, the circuit configuration of the power outage backup circuit C20 when the key telephone 2 does not have the recording means 34, 35 as a separate structure as shown in FIG. 1 is the power outage power backup circuit B30 shown in FIG. Of these, R6-Q4-R9-Q5-R10-D6 connected to the output port O of the microprocessor 32
You can omit the root of .

[Effects of the Invention] As explained above, according to the present invention, the power outage backup battery used in the entire system, which is implemented for the first time in the system, has a circuit configuration that is consumed only when operating under predetermined conditions. Therefore, there is no need to increase the capacity in accordance with the scale of the device to be accommodated, such as a button telephone or a message recording and reproducing device, so there is an advantage that the button telephone device that accommodates the message recording and reproducing device can be made inexpensive and compact.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing an embodiment of the message recording and reproducing device of the present invention, and FIG. 3 is a block diagram of the present invention provided in the main device 1. Power supply backup circuit A during power outage
FIG. 4 is a specific circuit diagram showing an embodiment of the power backup circuit B in case of a power outage according to the present invention, which is provided in the message recording and reproducing device 3. FIG. 7 is a flowchart showing the operation of the microprocessor of the message recording and reproducing device. DESCRIPTION OF SYMBOLS 1... Main device, 2... Button telephone, 3... Message recording and reproducing device, 4... Public telephone network, 5... Subscriber's telephone at the other end, 10... Power backup circuit A during power outage, 11, 27 , 32... Microprocessor (CPU) (control means), 12, 26, 31
...Data transmission circuit, 13...Power supply circuit, 14...
...Extension circuit, 15, 36, 37...Control line, 2
0, 30...Power backup circuit during power outage (B), 2
1...Call path IC, 22...Handset, 23,
303,304,319...Switch, 24,3
05, 307, 310...Amplifier, 307...Level detector, 25...Speaker, 28...Keyboard, 33...Connection switching circuit, 34...Audio recording/playback LSI, 35...Audio data memory (dynamic RAM) ), L1, L2...Line, L3...Extension line, L4...Data transmission line, L5...Power supply line.

Claims (1)

[Scope of Claims] 1. In a button telephone device that houses a message recording device, the main device includes a main power source that supplies power to the system when the power is turned on, a backup power source for power failure that supplies backup power in the event of a power outage, and a backup power source that supplies power to the system during a power outage. and a first control means for transmitting set or reset data as a backup control flag in order to perform backup power supply under predetermined conditions, and the message recording device includes an input port for detecting a power outage and a When a power outage is detected, power supply determining means receives set or reset data from the first control means and determines whether or not to perform backup power supply; and a control output corresponding to the determination by the power supply determining means. and a first power supply circuit for supplying an output of the backup power supply for power outage to the second control means when the power outage is detected. a power outage backup means including a second power outage power supply circuit that supplies the output of the power outage backup power source to the recording means based on the control output from the output port of the second control means; When the second control means detects a power outage and determines that power supply is necessary by looking at the backup control flag, power is supplied to the recording means from the backup power supply for power outage for a certain period of time. A button telephone device characterized by: