JP2610144B2 - Incoming call notification system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incoming call notification system, and more particularly to an improvement in an incoming call notification system using electronic sounds.

[Conventional technology]

Conventionally, a means of notifying a subscriber of a call signal coming from a telephone line, that is, an incoming call, is typically a telephone bell, but a sudden high call, for example, when working in a quiet environment. There are few examples where the sound is unpleasant.
For this reason, in recent years, the method of notifying the incoming call by intermittent electronic sound instead of the electric bell has increased.

As a conventional method of notifying this type of incoming call with an electronic sound,
FIG. 2 shows a schematic diagram of an example of an incoming call notification circuit configuration.

In FIG. 2, 16 is a general telephone and 6 is its handset. 1 is a terminal L ₁ , L ₂ for connecting to a telephone line; 3 is a photocoupler PC 1 for insulating the line side from the device electronic circuit and transmitting signals; and 10 is composed of a commercial power supply or a battery. 11 is a relay operated by the output of the photocoupler 3, 12 is a contact of the relay 11, 15 is a ringing tone generating circuit that intermittently outputs an electronic sound by the output of the photocoupler 3, 13 is The output transformer, 14
A speaker 17 for outputting a ring tone is a terminal for connecting the telephone 16. D1 to D4 are diodes for rectification / detection, C1 and C2 are capacitors, and R1 is a resistor.

FIG. 3 is a diagram showing an example of each signal waveform in each part of the circuit of FIG. 2 (this diagram also includes other signal waveform examples relating to FIG. 1 of the embodiment of the present invention described later).

In FIG. 2, an example of the waveform of the call signal a arriving from the telephone line via the terminal 1 (16 Hz mark portion 1 second-space break time 2 seconds) is shown in FIG. 3a. This calling signal a
Is rectified / detected by diode bridges D1 to D4,
Through the photocoupler 3, a signal as shown in FIG. Since the relay 11 is operated in synchronization with this signal and the contact 12 is turned on / off, the normal telephone 16 is disconnected from the line at the timing when the bell should normally sound, so that the bell does not ring.
On the other hand, the ringing tone generation circuit 15 is activated by the input of the signal b, and the intermittent tone (for example, the sound of a bird) as shown in FIG.
Can be output from the speaker 14 via the transformer 13.

In addition, when the telephone set 16 picks up the handset 6, the exchange of the central office detects when the contact 12 is turned on and stops transmitting the calling signal a, so that a normal call can be made. Further, when the power supply 10 is in an abnormal state due to a power failure or battery exhaustion, the relay 11 does not operate, and the ringing signal a can ring the bell of the telephone 16 via the contact 12.

[Problems to be solved by the invention]

However, the conventional example having the above configuration has the following problems.

1) The incoming notification sound could not be converted into a comfortable continuous sound like a melody.

2) The telephone 16 and the incoming call notification device are configured as separate housings. For example, it is uneconomical because a sounding body that outputs a notification sound such as the speaker 14 cannot be shared.

3) In addition, since the operation of the contact 12 of the relay 11 mounted in series with the telephone 16 returns in synchronization with the calling signal a,
There was also a disadvantage that it was not possible to quickly capture the line after picking up the handset 6 at the time of an incoming call.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the conventional example, and usually notifies an incoming call with a continuous sound such as a comfortable melody, and when a power supply of the apparatus is abnormal, a call signal coming from the line. It is an object of the present invention to provide an incoming call notification system for a telephone which can notify the above incoming call by intermittent electronic sound only by the electric power of the telephone and output each of the above described informative sounds by a single sounding body.

[Means for solving the problem]

Therefore, in the present invention, a first circuit that outputs an intermittent tone by the power of a call signal arriving from a telephone line, a second circuit that outputs a continuous tone by the power of an apparatus power supply, and the first and second circuits By switching the output of the circuit, the first and second
Switching means for inputting any of the outputs of the circuit to a single sounding body; and detecting means for detecting a state of the power supply, wherein the switching means is configured to output the continuous sound when the power supply is in a normal state. In addition, when the power supply is in an abnormal state, the output of the first and second circuits is switched according to the state of the power supply so that the ringing signal is notified by the intermittent sound. An object of the present invention is to provide a telephone incoming call notification method characterized by inputting a call to a telephone.

[Action]

With the above-described incoming call notification circuit configuration of the telephone, an incoming call can be notified by a continuous tone when the device power supply is in a normal state, and by an intermittent tone using only the power of the call signal in an abnormal state, and a single sounding body , Can output the above both notification sounds.

〔Example〕

Hereinafter, the present invention will be described based on examples. FIG. 1 shows a circuit diagram of one embodiment of a telephone call alerting system according to the present invention, and the same (corresponding) components as those in FIG.

(Configuration) 1 is a telephone line connection terminal L ₁ , L ₂ , ₂ , 2a is a handset 6
Each of the hook switches HS, 3 operated by raising / lowering the photocouplers PC1, 4 for insulating the line side and the device electronic circuit and transmitting signals, 4 is a dialing circuit, 5 is a communication circuit, 7 is a communication circuit A ringing tone generating circuit for outputting an intermittent electronic sound which can be operated only by the power of the calling signal a sent via the line, and a retrigger having a time constant longer than the intermittent cycle of the calling signal a. Is a melody generating circuit that outputs a continuous sound electronic sound such as a melody by a device power supply 10 such as a commercial AC power supply or a battery, 11 is a relay operated by the power supply 10, and 12 is a relay. The relay 11 also serves as a means for detecting a normal / abnormal (power failure, voltage drop, etc.) state of the power supply capability by turning on / off the relay. Reference numeral 13 denotes an output transformer, and reference numeral 14 denotes a speaker as a single sounding body that outputs a continuous sound such as an intermittent ringing tone and a melody. D1 to D4 are rectified /
Diodes for detection, C1 and C2 indicate resistances.

(Operation) “a” to “e” in FIG. 3 are examples of signal waveforms in the respective parts “a” to “e” in FIG. 1 (a, b, and e are used in the description of FIG. 2).

In FIG. 1, relay is performed when the power of the device power supply 10 is normal.
When the switch 11 is operated, the contact 12 is tilted as shown by the solid line in the drawing. In this state, the third terminal between L ₁ and L ₂ of line terminal 1
When a call signal (16 Hz mark portion 1 second-space break time 2 seconds) arrives as shown in FIG. A, the call signal a is detected / shaped by each of the diodes D1 to D4 and passed through the photocoupler 3 as shown in FIG. A signal as shown by b is input to the one-shot multivibrator 8. This vibrator 8
Has a time setting slightly longer than the synchronization of the call signal a,
From the vibrator 8, a signal b as shown in FIG.
The signal triggered by is output. This signal c is input to the melody generating circuit 9 to output a continuous melody sound as shown in FIG. 3d, and the speaker 14 sounds via the output transformer 13.

On the other hand, if the device power supply 10 is in an abnormal state such as a power failure or a voltage drop, and it is impossible to operate the melody generating circuit 9, the relay 11 is also inoperable, and the contact 12 of FIG. Is returned to the broken line side. In this state, when the call signal a arrives from the line, the call generation circuit 7 outputs an intermittent electronic sound as shown in FIG.

On the other hand, when the speaker 14 is sounding in a continuous tone due to the output of the melody generating circuit 9 in the normal power supply state, the one-shot multivibrator is set so that the notification sound stops immediately when the line is captured by lifting the handset 6. 8 is configured to be reset via the contact point of the hook switch 2.

In the present embodiment, the relay 11 itself detects an abnormal state at the time of a power failure or a decrease in the capacity of the power supply of the apparatus. However, in this method, the detection braking is slightly inferior. When the voltage falls below the value, the comparator 11 may be turned on / off to determine the power state of the power supply and operate / return the relay 11.

In the present embodiment, the handset 6 of the telephone is used.
Hook switch 2
Although the signal is transmitted to the one-shot multivibrator 8 and reset by a contact 2a different from the contact for capturing the line, a current detecting element such as a relay or a photocoupler must be directly mounted on the line. May be implemented.

〔The invention's effect〕

As described above, according to the present invention, when the device power capability is normal, the incoming call is notified by a continuous tone such as a comfortable melody sound, and when the power capability is abnormal, a call signal coming from the line is notified. Incoming call notification can be performed by an intermittent tone using only electric power, and these continuous tone / intermittent tone generating circuits can share a single sounding body, which is more economical than the conventional example.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an embodiment of an incoming call notification system according to the present invention, FIG. 2 is an example of a conventional incoming call notification circuit diagram, and FIG. It is a waveform example. 7 ringing tone generating circuit (intermittent tone e output circuit) 9 melody generating circuit (continuous tone d output circuit) 10 device power supply 11 relay (power capability detecting means) 12 contact (switching means) 14 …… Speaker (pronunciation body) a …… Paging signal

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Masaki Hara 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (56) References JP-A-49-46301 (JP, A)

Claims (1)

(57) [Claims] 1. A first circuit for outputting an intermittent tone by the power of a call signal arriving from a telephone line, a second circuit for outputting a continuous tone by the power of a device power supply, and an output of the first and second circuits. Switching means for inputting any of the outputs of the first and second circuits to a single sounding body, and detecting means for detecting the state of the power supply, wherein the switching means One of the outputs of the first and second circuits is set to a power supply state so as to notify the calling signal by the continuous sound when the power supply is in a normal state and by the intermittent sound when the power supply is in an abnormal state. A telephone incoming call notification method, wherein the input is switched to the single sounding body in response to the input.