JPH01117454A - System for notifying telephone incoming call - Google Patents

Abstract

PURPOSE:To output both call tones from a single sounding body by notifying a call signal in consecutive/intermittent tones respectively in response to the normality/abnormality of a state detected by a power supply detecting means. CONSTITUTION:When the voltage of an equipment power supply 10 is discriminated to be normal by a power voltage detection circuit 12, the output of a call tone generating circuit 7 is inhibited by a photocoupler 8, a call signal is detected/waveform-shaped by diodes D1-D4, the result is given to a one-shot multivibrator 9 via a photocoupler 3, a melody generating circuit 11 outputs a continuous melody tone. Since the output of the melody generating circuit 11 is inhibited and the photocoupler 8 is not operated when the voltage of the equipment power supply 10 is discriminated to be faulty, the output inhibition of the call tone generating circuit 7 is released. When the call signal reaches a line terminal 1, the call tone generating circuit 7 generates an intermittent signal to inform it. Thus, the single sounding body applies different incoming tone notice.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an incoming call notification system for a telephone, and particularly to an improvement in an incoming call notification system using electronic sounds of a telephone.

(Prior Art) Conventionally, the calling signal coming from the telephone line, that is, the means to notify the subscriber of an incoming call, was a telephone bell. There are many cases where a sudden high-pitched ringing tone makes people feel uncomfortable.

For this reason, in recent years, there has been an increase in the use of intermittent electronic sounds to notify incoming calls instead of bells.

As a conventional method of notifying an incoming call using an electronic sound, there is a method disclosed in Japanese Patent Publication No. 55-19099, and FIG. 2 shows a schematic diagram of an example of an incoming call notification circuit configuration.

In FIG. 2, 19 is a general telephone and 6 is its handset. 1 is a terminal L+, Lx for connecting to a telephone line; 3 is a photocoupler Pct for insulating the line side and the device electronic circuit and transmitting a signal; 10
is a device power source composed of a commercial power source or a battery, 1
5 is a relay activated by the output of the photocoupler 3, 1
6 is a contact point of the relay 15; 17 is a ringing tone generating circuit that outputs an electronic sound intermittently according to the output of the photocoupler 3; 1;
8 is an output transceiver, 14 is a speaker for outputting a ring tone, and 20 is a terminal for connecting the telephone 19. In addition, DIND4 is each diode for rectification/detection,
C, , C2 are each capacitor, and R, , R2 are each resistor.

FIG. 3 is a diagram showing examples of signal waveforms in each part of the circuit of FIG. 2 (this figure also includes other examples of signal waveforms related to the embodiment of the present invention shown in FIG. 1, which will be described later).

In FIG. 2, an example of the waveform of the calling signal a that arrives from the telephone line via terminal 1 (16H, mark portion 1 second - space break time 2 seconds) is shown in FIG. 3a. This call signal a
is rectified/detected by the diode bridges D1 to D4, and then passed through the photocoupler 3 to become a signal as shown in FIG.

Since the relay 15 operates in synchronization with this signal and the contact 16 turns on and off, the normal telephone 19 is disconnected from the line at the timing when the bell should normally ring.
The bell doesn't ring. On the other hand, the ringing tone generating circuit 17 is activated by the human power of the signal, and an intermittent tone (
For example, the voice of a small island) can be output from the speaker 14 via the transformer 18.

Furthermore, when the telephone line is captured by picking up the handset 6 of the telephone set 19, the telephone exchange at the central office detects this and stops sending out the ringing signal a when the contact point 16 is on, allowing normal telephone calls. Furthermore, due to power outage or battery depletion, etc.
If the power of power 1to becomes abnormal, relay 1
5 is not activated, the calling signal a reaches the telephone 19 via the contact 16, and the bell of the telephone 19 rings. .

(Problem to be solved by the invention) However, in the conventional example of the above configuration,
There were the following problems: 1) It was not possible to make the incoming call notification sound a comfortable continuous sound like a melody.

2) Since the telephone set 16 and the incoming call notification device are configured in separate casings, it is not possible to share a sounding body such as the speaker 14 that outputs the notification sound, which is uneconomical.

3) In addition, since the contact 16 of the relay 15 mounted in series with the telephone 19 returns to operation in synchronization with the ringing signal a, it is impossible to immediately seize the line after picking up the handset 6 when receiving a call. It also had the disadvantage of being.

The present invention has been made in order to solve the above-mentioned problems of the conventional example. Normally, the incoming call is announced with a continuous tone such as a pleasant melody, and when the device power supply is abnormal, the incoming call from the line is notified. It is an object of the present invention to provide an incoming call notification system for a telephone, which notifies the above-mentioned incoming call by intermittent electronic sounds using only a signal, and can output each of the above-mentioned notification tones by a single sounding device.

(Means for Solving the Problems) Therefore, in the present invention, a first circuit outputs an intermittent tone using the power of a telephone line ringing signal, and a second circuit outputs a continuous tone using the power of the device power source. , the first. comprising an output means for notifying the output of the second circuit or the output with a single sounding body, and means for detecting the power state,
The above object is achieved by configuring the signal to be notified by the continuous tone/intermittent tone, depending on whether the state detected by the detection means is normal or abnormal.

(Function) With the incoming call notification circuit configuration of the telephone as described above, it is possible to notify an incoming call with a continuous sound when the device power supply is in a normal state, and with an intermittent sound using only the power of the ringing signal in an abnormal state. The issuer can output the above-mentioned internal notification sound.

〔Example〕

The following is a description of one company, based on an example.

FIG. 1 shows a circuit diagram of an embodiment of the telephone call notification system according to the present invention, and the same (equivalent) components as in the conventional example shown in FIG. 2 are denoted by the same symbols.

(Configuration) 1 is a telephone line connection terminal, L2 and 2゜2a are hook switches that are activated by raising/lowering the handset 6 of the telephone, and 3 is a signal terminal by insulating the line side and the device electronic circuit. 4 is a dialing circuit, 5 is a telephone call circuit, and 7 outputs an intermittent electronic sound that can be operated only by the power of the calling signal a sent through the line. a ringing tone generation circuit; 8, a photocoupler for prohibiting the operation of the ringing tone generation circuit; 9, a ringing signal a;
A one-shot multivibrator that can be retriggered and has a time constant longer than the intermittent cycle of 10, a device power source such as a commercial power source or a battery, 1! 12 is a melody generation circuit that outputs a continuous electronic sound such as a melody by the power supply 10; 12 is a detection circuit for detecting the voltage or other performance status (power outage, voltage drop, etc.) of the power supply 10; 13 is a This is an output transformer for outputting the outputs of both the ringing tone generating circuit 7 and the melody generating circuit 11 to the speaker 14, which is a single sounding body.

In addition, D1 to D4 are respective diodes for rectification/detection, c,
, c2 are respective capacitors, R, , R2 discharge resistors.

(Operation) A ”-e in Fig. 3 represents each part a in Fig. 1.
This is an example of each signal waveform at Ne (among them, a, b, and c are used in the explanation of FIG. 2 above).

In FIG. 1, when the voltage of the device power supply 10 is determined to be in a normal state (capable) by the power supply voltage detection circuit 12, that is, in normal times, the ringing tone generation circuit 7
The output of is prohibited by the photocoupler 8. In this state, when a calling signal (16H, mark part 1 second - space break time 2 seconds) as shown in FIG. Detection/waveform shaping is performed by the diodes D1 to D4, and a signal as shown in FIG. 3 is input to the one-shot multivibrator 9 via the photocoupler 3. The vibrator 9
has a time constant slightly longer than the period of the calling signal a, so
The vibrator 9 outputs a signal triggered by the signal shown in FIG. 3C. In response to the input signal C, the melody generating circuit 11 outputs a continuous melody sound as shown in FIG.

On the other hand, the voltage of the device power supply 10 is detected by the power supply voltage detection circuit 12 as abnormality X! ! When it is determined that there is no capability, the output of the melody generation circuit 11 is prohibited and the photocoupler 8 does not operate, so that the inhibition of the output of the ring tone generation circuit 7 is canceled. In this state, the call signal a is sent to line terminal 1.
When the ringing tone generation circuit F generates an intermittent signal as shown in FIG.

Furthermore, as mentioned above, when the melody generating circuit 11 is notifying with the continuous sound d, two sets of hooks are connected so that when the telephone handset 6 is picked up and the line is to be captured, the notifying sound stops immediately. switch 2
The one-shot multivibrator 9 is configured to be reset via the contact point.

In this embodiment, the line capture status due to raising/lowering of the handset 6 of the telephone is transmitted to the one-shot multivibrator 9 through a contact 2a different from the contact for capturing the line of the hook switch 2. However, it may be reset by directly mounting a current detection element such as a relay or a photocoupler on the line.

(Effects of the Invention) As explained above, according to the present invention, when the power supply of the device is in a normal state, an incoming call is announced with a continuous sound such as a pleasant melody tone, and when the power supply is in an abnormal state, an incoming call is announced from the line. It is possible to notify an incoming call using intermittent tone using only the power of the calling signal.

These continuous sound/intermittent sound generation circuits can share a single sounding body and are more economical than conventional examples.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of an embodiment of the telephone incoming notification system according to the present invention, Fig. 2 is an example of a conventional incoming call notification circuit diagram, and Fig. 3 is each signal waveform in each part of the circuit shown in Figs. 1 and 2. This is an example. 7---Ring tone generation circuit (intermittent tone e output circuit) 8.
-1 food coupler (ringing tone generation circuit 7 output prohibition means) 10--device power supply 11-1 melody generation circuit (continuous tone d output circuit) 12-1 power supply voltage detection circuit (power supply capability detection means) 13- 1 Output transformer (output means) 14--Speaker (sounding body) a...--Call signal

Claims (1)

[Claims] A telephone that uses a sounding body to notify the incoming call of a ringing signal that comes from a telephone line, and has a first circuit that outputs an intermittent tone using the power of the ringing signal, and a second circuit that outputs a continuous tone using the power of the device power source. , comprising an output means for outputting a notification of the outputs of the first and second circuits with a single sounding body, and a detection means for detecting the state of the power supply, and when the power supply is in a normal state, the continuous sound is emitted. An incoming call notification system for a telephone, characterized in that the calling signal is notified by the intermittent tone when the power supply capacity is in an abnormal state.