JPH0352050Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to an incoming call notification device that notifies an incoming call signal from a telephone by sound and light.

(b) Conventional technology Traditionally, telephones receive incoming signals from exchanges (in Japan, 16H _Z , approximately 85Vrms, 1 second on, 2 seconds off)
The phone rings the number of times. However, since the recipient can confirm that the call has arrived after hearing two or three rings, subsequent rings are not necessary, and especially if the call is received late at night, it may cause noise to the surrounding area. Become.

For this reason, as shown in Japanese Utility Model Application Laid-Open No. 60-79860, an incoming call notification device is known in which a light-emitting display means is provided together with a sound-emitting means, and the volume of the sound-emitting means is reduced by a drive switch of the light-emitting display means.

However, in the above-mentioned conventional device, the sounding means maintains the normal volume unless the drive switch of the light-emitting display means is operated, so if the recipient is far away from the telephone, the telephone will continue to ring. There is a problem with the noise that spreads around.

As a solution to this problem, the
As shown in Publication No. 104652, the ringing of the bell due to the ringing signal from the exchange is counted, and the ringing of the bell is stopped at a predetermined period, and while the ringing signal is being received, a light emitting display is displayed. Devices for displaying call status are known.

However, in such a device, after the bell stops ringing, the ringing status is notified only by the light-emitting display means. First, in cases where an incoming call cannot be answered immediately, the only way to determine whether or not an incoming call is currently in progress is to check the display state of the light-emitting display means, which is insufficient.

(c) Problems to be solved by the invention Therefore, the present invention makes it possible to check the presence or absence of an incoming call signal after the bell has stopped ringing without adding any special circuit.

(d) Means for solving the problem The present invention includes a light-emitting display means that is driven based on an incoming signal and displays the arrival of the incoming signal, and a pulse shaping device that shapes and outputs a predetermined pulse based on the incoming signal. The present invention is characterized in that it includes a circuit, a control circuit that outputs a control signal based on the supply of the predetermined pulse, and a sounding means driven by the control signal from the control circuit.

(E) Effect According to the present invention, while an incoming signal is arriving,
Indicating an incoming call on the light emitting display means, and
Until a predetermined number of pulses are supplied to the control circuit from the pulse shaping circuit and when the pulses disappear, the control circuit supplies the control signal to the sound generating means, It is also possible to notify the disappearance of an incoming call signal by driving the sound generating means.

(f) Examples The present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 is a circuit diagram of an embodiment of the present invention.

When an incoming signal from the exchange arrives between (TR), it passes through a capacitor 1 and a resistor 2, is rectified by a diode bridge 3, and causes a light emitting diode 4 and a light emitting element 6 in a photocoupler 5 to emit light. The light emitting diode 4 blinks while there is an incoming signal (for one second) as shown in FIG. 2A to inform the receiver that there is an incoming call.

Further, the light emitting element 6 in the photocoupler 5 also emits light, and the light receiving transistor 8 also becomes conductive. The output of the light receiving transistor 8 is connected to a capacitor 10, a resistor 11,
The pulse A shown in FIG.

Therefore, the waveform at point a becomes pulse B in FIG. The control circuit 14 outputs a control signal based on this pulse, and the ringer generator 15 is driven by this control signal, and the speaker 16 generates a ringer sound.

FIG. 3 is a flowchart showing the operating state of FIG. 1. For example, if the recipient wants to set the number of rings n to two, the recipient sets the number of rings to "2" in the control circuit 14. Control circuit 14 when receiving a call
determines the presence or absence of pulse B, and if it is present, outputs a signal to the ringer generator 15, and the ringer generator 1
5 to produce a ringer sound. This is repeated to count the number of pulses B, and when this number reaches the set number "2", the control circuit 14 stops outputting the signal to the ringer generator 15. As a result, the ringer generator 15 stops, and the ringer sound stops.

Thereafter, the control circuit 14 determines the presence or absence of pulse B, and when the pulse B disappears due to the caller hanging up the phone, it outputs a signal to the ringer generator 15 to generate the ringer sound only once. This allows the receiver to know that the caller has hung up, so that the receiver no longer needs to answer the call.

In addition, since the light emitting diode 4 continues to flash as described above from the start of the incoming call until the incoming call signal arrives, the receiver can recognize that there is an incoming call even if there is no ringing tone. .

(g) Effects of the invention According to this invention, when a call is received, the ringtone will ring only the number of times set by the recipient, so even if the recipient is far away from the telephone or close to the telephone, he or she will not be able to take his hands off the phone. Even in cases where the incoming call is not answered, the telephone will not continue to ring until the incoming call is answered, causing noise, and when the incoming signal disappears, the incoming call will be terminated by sounding the ringing tone again. Since the receiver is notified of the completion of the call, the receiver can easily confirm the completion of the call even when the receiver is away from the telephone.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram of an embodiment of the present invention, Fig. 2 is a signal waveform diagram, A is an incoming signal waveform diagram, B is a pulse waveform diagram after molding, C is an input signal waveform diagram to the control circuit, and Fig. 2 is a signal waveform diagram. Figure 3 is a flowchart. 4...Light emitting diode, 9...Pulse shaping circuit, 14...Control circuit, 15...Ringer generator, 16...Speaker.

Claims (1)

[Claims for Utility Model Registration] A light-emitting display means that is driven based on an incoming signal and displays the arrival of the incoming signal, a pulse shaping circuit that forms and outputs a predetermined pulse based on the incoming signal, and a pulse forming circuit that forms and outputs a predetermined pulse based on the incoming signal, and a control circuit that outputs a control signal based on the supply of the control circuit, and a sounding means driven by the control signal from the control circuit, and displays an incoming call on the light emitting display means while an incoming signal is arriving. Also, by supplying a control signal from the control circuit to the sounding means until a preset number of pulses are supplied from the pulse shaping circuit to the control circuit and when the pulses disappear. An incoming call notification device for a telephone, characterized in that the sounding means is driven.