JPH036954A - Telephone system - Google Patents

Abstract

PURPOSE:To prevent reduction in the sound volume of ringer tone by outputting alternatively the ringer tone and an alarm tone when a call comes from an opposite terminal equipment while an alarm tone is outputted from a speaker. CONSTITUTION:When the alarming time reaches, a holding tone stored in a holding tone output circuit 9 is outputted to a reception amplifier 6 from the output 131 of a liquid crystal driving control circuit 13 and a holding tone being an alarm tone is sent from a speaker 7. When a call signal 111 from an opposite terminal equipment is inputted to a ringer circuit 14 through a telephone circuit 1, a signal 151 rising to an 'H' level is outputted only when a 16Hz signal is inputted from an incoming call detection circuit 15 and a switching circuit 17 applies its switching control based on the incoming detection signal 151. Thus, while a ringer tone is outputted from the speaker 7, the reduction in the output impedance by the operation of the reception amplifier 6 is prevented.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention has an alarm setting function, and when the alarm setting time comes, the handset is turned on or off.
The present invention relates to a telephone device that outputs an alarm sound for a certain period of time from either or both of a speaker and a handset provided on the device body depending on the hook state.

(Prior Art) Due to recent advances in science and technology, telephone devices have changed from dial-type to button-type telephones, and have also changed to cordless telephones. Additionally, in order to meet the diversifying needs of users, devices equipped with various functions (for example, an answering machine function, an automatic dialing function, an automatic answering function, etc.) are being provided. One example is a telephone device with a liquid crystal display panel equipped with an alarm function.

This telephone device is configured to output a hold tone as an alarm sound from a speaker provided in the main body of the device and a receiving section of the handset, regardless of whether the handset is hooked or not, when the alarm setting time arrives.

(Problem to be solved by the invention) For this reason, if the alarm time comes while the user is in a call state with the handset off-hook, the handset will also output an alarm sound, which will interfere with the call. There were problems such as being exposed. In addition, if there is a call from the other party's terminal while the alarm sound is being output, the output impedance will drop because the receiving amplifier is in operation, and therefore the output from the impedance matching circuit will not be visible. There was a problem that the hook was lowered and the ringer sound became weaker.

The present invention was made in view of the above-mentioned circumstances, and its purpose is to output the alarm sound only from the speaker installed in the main body of the device, and also to output the alarm sound from the other party's terminal while the alarm sound is being output from the speaker. It is an object of the present invention to provide a telephone device which prevents a decrease in the volume of a ringer sound by alternately outputting a ringer sound and an alarm sound when there is a call.

(Means for Solving the Problems) In order to solve the above problems, the telephone device of the present invention having an alarm sound output function provides an alarm sound output only from the speaker when the alarm setting time comes, regardless of the hook state of the handset. When there is a call from the other party's terminal while the alarm sound output means outputs a sound and the alarm sound is output from the speaker due to the operation of the alarm sound output means, the period during which the call signal is input is The apparatus further includes output switching means for outputting a ringer sound from the speaker and for outputting an alarm sound from the speaker during a period when no calling signal is input.

(Function) When the alarm setting time comes, the alarm sound output means outputs the alarm sound only from the speaker provided in the main body of the device, regardless of the hook state of the handset. In addition, if there is a call from the other party's terminal while the alarm sound is being output from the speaker due to the operation of the alarm sound output means, the output switching means will change the period during which the call signal is being input. performs a switching operation in which a ringer sound is output from the speaker, and an alarm sound is output from the speaker during a period when no call signal is input. This can prevent problems such as a decrease in output impedance and a decrease in ringer sound.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the electrical configuration of the telephone device of the present invention.

In the figure, a signal from a terminal on the other end (not shown) is sent to a hook switch 2 and a ringer circuit 14 via a telephone line 1.
The output of the hook switch 2 is led to a communication circuit 4 via a rectifier circuit 3.

The output of the communication circuit 4, which forms a communication path with the other party's terminal, is guided to a handset 5 and a reception amplifier 6 provided in the main body of the device. Further, the output of the handset 5 indicating the user's voice signal is sent to the telephone line 1 via the communication circuit 4, the rectifier circuit 3, and the hook switch 2. In addition, by turning on a hold button (not shown), the hold control signal output from the hold control circuit 8 is
The output of the hold tone output circuit 9, which is made up of C-MOS, etc., is guided to the control inputs of the hold tone output circuit 9, the call circuit 4, and the receiver amplifier 6. 6 to a speaker 7.

Output 131 of the liquid crystal drive control circuit 13 that sends a signal instructing to start outputting an alarm sound when the alarm setting time comes
is led to the control input of the power switch circuit 11 and the control input of the hold tone output circuit 90 that outputs the hold tone that also serves as an alarm sound, and is also led to the control input of the receiving amplifier 6 via the switch circuit 17. There is. Further, the signal indicating the OFF hook from the hook switch 2 is guided to the liquid crystal drive control circuit 13, and by detecting this OFF hook signal, the liquid crystal drive control circuit sends out a signal instructing to prohibit the output of the alarm sound. Output 1 of circuit 13
32 is led to a mute circuit IO. Further, the output 101 of the mute circuit 10 that sends out a mute signal based on the signal from the liquid crystal drive control circuit 13 is led to the held tone output circuit 9, and the held tone output circuit 9 outputs a mute signal based on the mute signal. , the output of the hold tone to the call circuit 4 is stopped.

Further, one end of the power switch circuit 11 to which the output 131 of the liquid crystal drive control circuit 13 is led to the control input is connected to a power supply voltage V cc (for example, 3V) whose negative terminal is connected to ground.
The other end is connected to the receiving amplifier 6.

On the other hand, the output of the ringer circuit 14 from which the signal from the other party's terminal is guided via the telephone line l is guided to the incoming call detection circuit 15 and also to the speaker 7 via the impedance matching circuit 16. There is. Further, the output of the incoming call detection circuit 15 is guided to the incoming call detection input of the liquid crystal drive control circuit 13 and also to the control input of the switch circuit 17.

FIG. 2 shows a more specific circuit configuration of the liquid crystal drive control circuit 13.

In the figure, the liquid crystal drive control circuit engineer 3 has a time setting key 21 for setting the current time and alarm time.
The output 221 of the key power port 22 is connected to a memory 23 for storing the set alarm time and a time counter 24 for counting the current time. being guided. The time counter 24 and the memory 23 are bidirectionally connected, and data can be transferred between the time counter 24 and the memory 23. In addition, the output of the time counter 24 that sends out a signal indicating the current time is
It is guided to an output boat 25. In addition, output boat 25
The output of the memory 23 indicating the set alarm time is led to the output port 25, and the output port 25 compares the current time input from the time counter 24 with the alarm time input from the memory 23. and when both times match, one output 13 of the output boat 25
A signal instructing the start of alarm sound output from 1 [Figure 3 (
a)], and at the same time, the other output 132 sends out a signal [see FIG. 3(b)] instructing to prohibit the output of the alarm sound. Further, the output of the hook switch detection section 26 that detects the OFF state of the hook switch 2 is led to the output boat 25.

Next, the operation of the telephone device having the above configuration will be explained with reference to the signal waveform diagrams shown in FIGS. 3 to 5.

In normal times when no alarm time is set, when there is a call from the other party's terminal, the user turns off the handset 5 and enters a normal conversation state.

Further, when the user dials the handset 5 with the handset 5 off-hook, and the other party's terminal responds with the OFF-hook, the normal call state is established.

In this case, the call signal from the other party's terminal is guided to the call circuit 4 via the telephone line 1, the hook switch 2, and the rectifier circuit 3, and is sent to the handset via the call path formed by the call circuit 4. 5 (in some cases, it is also guided to the speaker 7 via the receiver amplifier 6). When the user turns on the hold button in this call state, the hold control circuit 8 outputs the hold tone output circuit 9,
The call circuit 4, which outputs a hold control signal to the call circuit 4 and receiver amplifier 6, outputs the hold tone output circuit 9 to the rectifier circuit 3, handset 5, and receiver amplifier 6 based on this hold control signal. While connecting, mute the sending/receiving signals to/from the other party's terminal. And the hold tone output circuit 9
The hold tone such as music data stored in the receiver is transmitted to the rectifier circuit 3, the handset 5, and the receiver amplifier 6 by passing through the call circuit 4. As a result, the hold tone is sent to the other party and the user of the device in priority to the send/receive signal.

Next, the case where the alarm operation time is set using the time setting key 21 will be explained.

At this time, the time counter 24 has the time setting key 21
Based on this input, the time counter 24 starts counting the current time, and the counted current time is sent to the output port 25. In this state, the timer time is input using the time setting key 21. This timer time is stored in a predetermined storage area of the memory 23 via the key manual port 22 and is output to the output port 25.

At the output port 25, the current time from the time counter 24 and the timer time from the memory 23 are compared.

Then, the time tl when the current time and the timer time match
A signal 1321 that rises to the rH level and maintains this level for a period T (specifically, a signal instructing to prohibit the output of an alarm sound; hereinafter referred to as a muting signal) is sent from the output 132. , at time t2, which is delayed by time T2 from this time tl, “H
” level, maintains this level for a period T, and changes to the “L” level at a time T4 earlier than the time t4 at which the signal 1321 changes to the “L” level (specifically, , a signal instructing to start outputting an alarm sound: hereinafter referred to as a switching signal) 1311
is sent from the output 131. That is, the muting signal is sent out before the switching signal, and after the switching signal ends, the muting signal ends.

Next, each output 132 .
The operation of this telephone device when the muting signal 1321 and the switching signal 131 are output from 131 is as follows: ■ If the handset 5 is in the ON hook state when the alarm time has arrived, ■ The alarm time has come. When the handset 5 is in the OFF-hook state, ■ When the handset 5 switches from the ON-hook state to the OFF-hook state while the alarm sound is being sent, ■ When there is a call from the other party's terminal while the alarm sound is being sent. I will explain it separately.

Here, the switch circuit 17 is controlled to open and close based on the incoming call detection signal from the incoming call detection circuit 15.
Only when the incoming call detection signal from the incoming call detection circuit 15 is given is the OFF state 114 (that is, the state B in which the connection between the liquid crystal drive control circuit 13 and the receiving amplifier 6 is released), and in other cases ON status 1! (In other words, the state where the liquid crystal drive control circuit 13 and the receiving amplifier 6 are connected)
The opening and closing are controlled so that

■When the handset 5 is in the ON-hook state when the alarm time arrives.

In this case, a switching signal 1311 is output from the output 131 of the liquid crystal drive control circuit 13 at time t, and is applied to the receiving amplifier 6 via the power switch circuit 11, the hold tone output circuit 9, and the switch circuit 17. It is being

First, in the power switch circuit 11, the circuit is turned on by this switching signal 1311, and the power supply voltage V
CC is applied to the receiver amplifier 6. Then, in the hold tone output circuit 9, the switching signal 1311 puts the circuit into an operating state, and the hold tone stored in the hold tone output circuit 9 is output to the receiver amplifier 6. Ru. At this time, the hold tone is also output to the telephone call circuit 4, but since the call circuit 4 is in an inactive state in this case, the hold tone is not output to the handset 5. After that, in the receiving amplifier 6, since the circuit is operated by this switching signal 1311, the holding tone led from the holding tone output circuit 9 is supplied to the speaker 7,
The speaker 7 outputs a hold tone which is an alarm sound.

Note that the power switch circuit 11, the hold tone output circuit 9, and the receiver amplifier 6 to which the switching signal 1311 is applied operate during the period T of the "H" level of the switching signal 1311.
3, and the operation is stopped at time t when it changes to rl and J level.
The speaker 7 outputs a hold tone, which is an alarm sound, only during the period T. Moreover, the period T! from time t2 when the switching signal 1311 is output! At time 1+ just before, the output 132 of the liquid crystal drive control circuit 13
Therefore, the muting signal 1321 is output,
Since the communication circuit 4 is in the non-operating state as described above, the muting signal 1321 in this case has a configuration that does not substantially affect the circuit operation.

■When the handset 5 is in the off-hook state when the alarm time arrives.

In this case, the muting signal l321 is first output from the output 132 of the liquid crystal drive control circuit 13 at time t1.
Since this is output, the mute circuit 10 operates, and a mute signal is output to the held tone output circuit 9. After this,
A switching signal 1311 is output from the output 131 of the liquid crystal drive control circuit 13 at time tt, and this switching signal 1311 is sent to the receiving amplifier 6 via the power switch circuit 11, the hold tone output circuit 9, and the switch circuit 17. Given. At this time, the held tone output circuit 9 receives the mute signal from the mute circuit 10.
Since the transmission of the hold tone to the call circuit 4 is muted, it will not be output to the call circuit 4. In other words, the configuration is such that the conversation with the other party's terminal is not interrupted. Also, the time! The subsequent operation is the same as in case (2) above, and the hold tone is output from the speaker 7 for a period T from time tz.

■When the handset 5 switches from the ON-hook state to the OFF-hook state while transmitting the alarm sound.

In this case, after the alarm setting time 1+, the handset 5 is turned off.
The operation up to the time ts (see FIG. 4) when the FF is hooked is the same as described above, and the hold tone is output from the speaker 7. In this state, at time 1S, the handset 5
When the OFF hook is set, a signal indicating the OFF hook is input from the hook switch 2 to the hook switch detection section 26 of the liquid crystal drive control circuit 13. Based on this signal, the hook switch detection section 26 detects the OFF hook detection signal. 2
61 [see Figure 4 (C)] is sent to the output boat 25,
Based on this OFF hook detection signal 261, the output boat 25 stops sending out the switching signal 1311 and the muting signal 1321 at a certain time. As a result, the operations of the power switch circuit 11, the hold tone output circuit 9, and the receiving amplifier 6 are stopped, and therefore the output of the hold tone from the speaker 7 is stopped. That is, the handset 5
By setting the OFF hook, the alarm operating state is automatically canceled, and normal dial operation is possible from this state.

■When there is a call from the other party's terminal while the alarm sound is being sent.

In this case, the operation from the alarm setting time t until the call is received from the other party's terminal is the same as in (2) above, and the hold tone is output from the speaker 7. In this state, when the calling signal 111 from the other party's terminal is input to the ringer circuit 14 through the telephone line 1 at a certain time,
The ringer circuit 14 outputs a corresponding ringer signal.

This ringer signal is applied to the incoming call detection circuit 15 and also to the speaker 7 via the impedance matching circuit 16, from which a ringer sound is transmitted.

Here, as shown in FIG. 5(a), the calling signal 111 is a signal with a repeating pattern of transmitting a 16Hz signal for 1 second and then stopping its transmission for the next 2 seconds. The circuit 15 outputs a signal 151 that rises to the J level only during the period T during which this signal 167 is input. and a control input of circuit 17.

The switching circuit 17 is controlled to open and close based on this incoming call detection signal 151. That is, the incoming call detection circuit 15
Only during the period T during which the incoming call detection signal 151 from ! ! (In other words, the liquid crystal drive control circuit 13
The opening/closing is controlled so that the receiver amplifier 6 and the receiver amplifier 6 are connected to each other. Therefore, the period T during which the ringer signal from the ringer circuit 14 is applied to the speaker 7,
During this period, the transmission of the switching signal 1311 from the liquid crystal drive control circuit 13 to the receiving amplifier 6 is cut off, so that the receiving amplifier 6 is in the interrogating operation state for the period T. Therefore, while the ringer sound is being output from the speaker 7, the output impedance is prevented from decreasing due to the operation of the receiver amplifier 6, so that the ringer sound from the speaker 7 has a volume equal to that normally transmitted. It will be output at a volume that does not change in any way. During the period T7 in which the signal 167 is not input, the switching signal 1311 is sent from the liquid crystal drive control circuit 13 to the receiver amplifier 6. The hold tone will be output from the speaker 7. That is, in this embodiment, the ringer tone and the holding tone are alternately outputted from the speaker 7 at a time interval of 1:2.

In the above embodiment (case ■), even if the handset 5 is in the ON hook state at the alarm time, the muting signal 13 is output from the output 132 of the liquid crystal drive control circuit 13.
Although a configuration in which the muting signal 1321 is output has been described, in this case, a configuration in which the muting signal 1321 is not output is possible. Furthermore, in the above embodiment (case ■), even if the handset 5 is in the off-hook state at the alarm setting time, the hold tone is output from the speaker 7, but in this case, the mute It is possible to use a configuration in which not only the call circuit 10 but also the transmission of the hold tone to the receiving amplifier 6 is muted by the mute signal from the circuit 10. Furthermore, in the above embodiment (case ■), a configuration is described in which opening and closing of the switch circuit 17 is controlled based on the incoming call detection signal 151.
During the period T during which the signal No. 7 is input, the output of the muting signal 1321 itself from the liquid crystal drive control circuit 13 can be prohibited.

(Effects of the Invention) According to the telephone device of the present invention, even if the alarm sound is being sent from the speaker, the sending of the alarm sound can be stopped by hooking the handset off. Unlike other telephone devices, normal dialing operations can be performed without having to stop the alarm sound. In addition, if there is a call from the other party's terminal while the alarm sound is being sent, the operation of the receiving amplifier is stopped while the ringer sound is being sent from the speaker, and the sending of the alarm sound is stopped. It is possible to prevent a problem in which the volume of the ringer sound sent out from the speaker is lower than normal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the electrical configuration of the telephone device of the present invention, FIG. 2 is a block diagram showing the more detailed electrical configuration of the liquid crystal drive control circuit that is a component of the device, and FIG. 4 is a waveform diagram of signals sent from each output of the liquid crystal drive control circuit, FIG. 5(a) is a waveform diagram of a calling signal, and FIG. 5(b) is a waveform diagram of an incoming call detection signal. 14... Ringer circuit 15... Incoming call detection circuit 1
6... Impedance matching circuit 17... Switch circuit ■... Telephone line 3... Rectifier circuit 5... Handset/receiver 7... Speaker 9... Hold music output circuit 11... Power switch Circuit 13...Liquid crystal drive control circuit 2...Hook switch 4...Telephone circuit 6...Reception amplifier 8...Hold control circuit 10...Mute circuit n3 Figure 4 (c) 261 5 Figure 6

Claims (1)

[Scope of Claims] 1) It has an alarm setting function, and when the alarm setting time comes, depending on the ON-hook or OFF-hook state of the handset, a certain amount of sound is transmitted from either or both of the speaker provided in the main body of the device or the handset. In a telephone device that outputs a time alarm sound, the alarm sound output means outputs the alarm sound only from the speaker regardless of the hook state of the handset when the alarm setting time arrives; If there is a call from the other party's terminal while an alarm sound is being output from the speaker, a ringer sound will be output from the speaker while a ring signal is input, and an alarm sound will be output during a period when no ring signal is being input. and output switching means for outputting from the speaker.