JPS62269447A - Sound volume controller for telephone call tone - Google Patents

Abstract

PURPOSE:To give a small call tone to a person near a telephone set and to give a large call tone to a person apart from the telephone set by adopting the constitution so that the call tone gets larger as the count of call signals is larger. CONSTITUTION:A counter 14 gives a voltage corresponding to the call signal pulse number to a line 19 from a line 17 via a buffer 18. Since an amplifier circuit 31 drives a speaker 33 by giving an oscillation signal from an oscillation circuit 32 to the speaker 33 with an amplification factor corresponding to the signal level via a switch 29, a larger call tone is generated from the speaker 33 as the count of the call signal is increased. Then the line 40 is opened by a counter 37 of a timer 36 at a time of nearly one minute elapsed, a high level reset signal from an OR gate 20 resets the counter 14, which is restored to the original pause state.

Description

Description: TECHNICAL FIELD The present invention relates to a novel device for controlling the ringer volume of a telephone.

BACKGROUND ART Conventionally, the volume of a ringing bell of a telephone set can be adjusted by operating a volume setting knob.

Problems to be Solved by the Invention In this prior art, when the set volume is low, a person who is far away from the telephone can hear
Even if the phone rings, there is no sound, and if the volume is set to a high level, people near the phone will suddenly hear a loud ring, making them uncomfortable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a telephone ringer volume control device that controls the volume of a telephone ringing sound so that the user can comfortably hear the notification sound indicating that a telephone is ringing.

Means for Solving the Problems The present invention provides a telephone ringing tone characterized in that it includes a counter for counting ringing tones, and means for generating a notification tone at a louder volume as the count value of the counter decreases greatly. This is a volume control device.

According to the present invention, a counter counts the ringing signals sent from the telephone office to the called party via the telephone line, and when the counted value is small, the notification sound is made low, and when the counted value is large, the alert sound is made loud. Volume. As a result, a person near the telephone can comfortably operate the receiver without being surprised even if a notification sound suddenly occurs. In addition, a person who is far away from the telephone can hear a loud notification sound when the count value becomes large, and can know that a call has been received.

Embodiment FIG. 1 is a block diagram of an embodiment of the present invention. A telephone line 1 connected to a central office is provided to a changeover switch 3 of a hook switch 2.

This changeover switch 3 has a common contact 4 and individual contacts 5 and 6. The hook switch 2 also has a switch 7. A handset 10 including a receiver 8 and a transmitter 9
However, when the changeover switch 3 is placed at a predetermined position, the common contact 4 of the changeover switch 3 is electrically connected to the individual contact 6, and at this time, the switch 7 is electrically conductive. When the handset 10 is taken up from the above position and used, the common contact 4 of the changeover switch 3 is electrically connected to the individual contacts 5, and the switch 7 is closed. The individual contacts 5 are connected to a handset 10 via a speech circuit 11, and are capable of transmitting and receiving audio signals. The dialer 12 is also connected to the speech circuit 11 and is used as a calling party to send a dial signal. The individual contacts 6 of the changeover switch 3 are input from the line 13 to the clock input terminal CK1 of the counter 14. The counter 14 uses, for example, an integrated circuit MB84040 manufactured by Fujitsu, to which a diode 15 and a resistor 16 are connected. Line 1 through 18
9. By inputting a high level signal from the OR date 20 to this counter 14,
The count value is reset to zero. A line 21 is connected to one input terminal of the OR gate 20, and this line 21 is connected to a high level by a resistor 22, and this line 2
1 is also grounded via switch 7.

A line 23 is also connected to another input terminal of the OR date 20. Connected to this line 23 is a start signal generation circuit 24 that generates a start signal at the same time as the power is turned on. This starting signal generation circuit 24 includes a capacitor 25, a diode 26, a -3=resistance 27, and a switch 28. The switch 28 is
It is linked to another switch 29. switch 28.2
9 conducts/cuts off at the same time. The switch 29 is interposed on the line 19, and the signal from the line 19 is sent to the amplifier circuit 31 of the ringer 30 via the switch 29.

Lin 30 responds to the ringing signal from line 13;
Each time the calling signal goes high, the oscillation circuit 32 is activated. The oscillation output from the oscillation circuit 32 is
The signal is amplified by the amplifier circuit 31 and made into sound by the speaker 33. The amplifier circuit 31 amplifies the oscillation signal from the oscillation circuit 32 with an amplification factor that depends on a voltage value corresponding to the count value of the counter 14 applied from the line 19 via the switch 29. Therefore, as the count value of the calling signal by the counter 14 increases, the amplification factor of the amplifier circuit 31 increases, and a loud notification sound is generated from the speaker 33.

The ringing signal from line 13 is also a D-7 lip 70.
It is input to the tarok input terminal CK2 of the knob 34. This 7 rib 70 rib 34 is an integrated circuit M B manufactured by Fujitsu.
84.01.3 or the like.

The set input terminal S of the 7 rib 70 tube 34 is grounded, and the output from the OR gate 20 is given to its reset input terminal R2. The reset output terminal Q of the seven reset flop 34 is connected from the line 35 to the counter 37 of the timer 36.
The signal is input to the reset input terminal R3 at the terminal R3. 7 rib 70 rib 34 is clock input terminal CK 21.1m no 1
When a high-level calling signal is input, a low-level signal is kept derived from the output terminal Q, and when a high-level reset signal is input to the reset input terminal R2, the output terminal Q is set to a high level.

In the timer 36, the counter 37 includes a diode 38.
are related and connected. An oscillation signal from an oscillation circuit 39 is applied to a clock input terminal CK3 of the counter 37. As a result, the counter 37 counts the oscillation signals from the oscillation circuit 39, and keeps the line 40 at a low level until the count value reaches a predetermined value, and when the count value reaches the predetermined value. , the line 40 is opened. Line 40 is connected to high level via resistor 41. When the line 40 becomes open due to the action of the counter 37, a high level signal is applied to the OR date 20 from the line 42 to obtain a reset signal. This timer 36 has 7 rip 70 rip 34
The low level signal from the output Q of is the reset input terminal R3.
When the low level state of the output terminal Q continues for a predetermined period of time, for example, about 1 minute in the counter 37, the line 40 is opened and the low level state of the output terminal Q of the 7-lip-flop 34 is input to the counter 37. When the signal lasts for less than the time determined in counter 37, line 40 remains at ground level. The operation will be explained with reference to FIG. At time t1, switches 28 and 29 are turned on as shown in FIG. 2 (1).
It becomes conductive as shown in the starting state. This causes the OR date 20 to be passed from the startup circuit 24 to the line 23.
is given a high-level pulse.

The output waveform of the OR date 20 is as shown in FIG. 2 (2). The handset 10 is placed in a predetermined position, so that the common contact 4 of the changeover switch 3 of the seven-way switch 2 is electrically connected to the individual contact 6, and the switch 7 is also electrically conductive.

Therefore, at time E2, from telephone line 1 to Figure 2 (3
) is sent out, this calling signal is counted in the counter 14 from the line 13, and the 7 ribs 70 tubes 34 are sent from the output terminal Q to the line 35 as shown in FIG. 2 (5). Derive the low level signal. The output signal from line 40 by timer 36 is at a low level, as shown in FIG. 2(6).

The counter 14 counts the calling signals, and in accordance with this count, a signal having the waveform shown in FIG. 2 (7) is derived to the line 19. The amplification circuit 31 has an amplification factor corresponding to the level of the signal from the line 19 via the switch 29.
An oscillation signal from the oscillation circuit 32 is applied to the speaker 33 to drive it. Therefore, the speaker 33 generates a notification sound at a louder volume as the count value of the calling signal increases. When the ringing signal is received at the counter 14,
Time t3 until reaching a preset value, for example 8
When the handset 10 is picked up, the switching mode of the hook switch 2 is as shown in FIG.
), the common contact 4 is switched to the changeover switch 5 and connected, and the switch 7 is disconnected. In this way, a call can be made during the period from time 13 to time t4.

After ending the call at time t4, the handset
10 is placed in a predetermined position, whereby the common contact 4 in the changeover switch 3 of the hook switch 2 is switched to the individual contact 6 and conducts, and the switch 7 also conducts. In this way, the device enters the standby state again. Note that at the above-mentioned time t3, when the switch 7 is cut off,
A high level signal is applied to the line 21 by the action of the resistor 22, which resets the counter 14 and the 7-rib flop 34, and in response, the line 19
becomes low level, line 35 becomes high level, the count value of counter 37 is erased, and line 40 returns to the grounded state.

At time t5, a calling signal is sent from the telephone line 1, and from this time L5, the counter 37 of the timer 36 starts counting, and due to the function of the counter 14, the calling signal is sent from the telephone line 1.
The output level of 9 increases according to the count value of the ringing signal. After time t6, when the ringing signal exceeds a predetermined value in the counter 14, for example 8 as described above, without picking up the handset 10, the counter 14
maintains line 17 at the upper limit. The timer 36 has been performing a clocking operation since time t5, and at time L7 when the time set in the timer 36 has elapsed, for example, about one minute as described above, the line 40 is opened by the action of the counter 37 of the timer 36. state. Therefore, the line 42 is brought to a high level by the action of the resistor 41, and as a result, the high level reset signal from the OR date 20 resets the counter 14, resets the 7th and 70th tabs 34, and outputs the line 35. Set to high level 1. In this way, even if the ringing signal is generated at a predetermined value of 8 or more, if the handset 10 is not picked up, the notification sound generated from the speaker 33 will remain constant at the upper limit value from then on. After the count value of the calling signal exceeds 8,
After approximately one minute, which is set by the timer 36, has elapsed from the time L5 when the first calling signal was generated, the device enters the reset state and returns to the original dormant state regardless of the presence or absence of the calling signal.

Effects As described above, according to the present invention, as the count value of the ringing signal increases, the notification sound also becomes louder, so a person near the telephone can hear the count value being small, and therefore the notification sound is low. People who are far away from their phones can hear the notification sound when the count increases and the notification sound becomes louder. This allows the user to comfortably listen to the notification sound, and eliminates the trouble of having to reset the volume of the notification sound as in the prior art described above.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
A waveform diagram for explaining the operation of the embodiment shown in the figure, and FIG. 3 is a waveform diagram showing the notification sound from the speaker 33. 1...Telephone line, 2...Hook switch, 3...
Changeover switch, 10...Handset, 1 go...
Speech circuit, 12...Guiala, 14...Counter, 20...OR date, 30...Linger, 31.
...Amplification circuit, 32...Oscillation circuit, 33...Speaker, 34...7 lip 70 tube, 36...Timer

Claims (1)

[Scope of Claims] A volume control device for a telephone ringing tone, comprising: a counter for counting the number of ringing tones; and means for generating a notification tone at a louder volume as the count value of the counter increases.