JP2517263Y2 - Telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a telephone, and more particularly to a telephone having a function of detecting an incoming signal of a call waiting service and notifying the user.

(Prior Art) A telephone that subscribes to a call waiting service receives an audible signal superimposed on the telephone line when a call is received from a third party during a call (hereinafter, the call waiting service is called). Signal) is emitted from the handset of a handset (hereinafter referred to as a handset) together with a call voice signal, and it becomes possible to know that there is a call from a third party. There is. Then, when the user pushes down the hook switch, the other party currently in the call is temporarily put on hold, and the call with the third party becomes possible. You can resume the call with the other party.

(Problems to be solved by the invention) However, since the above-mentioned conventional telephone is intended to be used when the user puts the handset on his / her ear, the temporary handset is kept away from the ear during a call with the other party. In some cases, or when it becomes necessary to place the handset once and make the other person wait, there is no way to hear this signal even if the incoming call signal of the call waiting service is input. There was a problem that I could not know.

Although telephones with a hold function are also widespread, when a hold operation is performed, this telephone temporarily suspends the call and puts it in a hold state, generates a hold sound, and makes the other party wait. While the hold tone is being sent, even if an incoming call signal of the call waiting service comes in, the user on the receiving side does not hear the incoming call tone, and the user knows that the call is waiting. You can't do it.

The present invention has been made in view of the above circumstances, and an object of the present invention is to notify a user of an incoming call even if a third party makes a call in a temporary hold state in a telephone having a call waiting service function. It is to provide a telephone that can.

(Means for Solving the Problems) In order to solve the above problems, a telephone according to claim 1 of the present invention is configured such that the holding button, a holding sound generation circuit for generating a holding sound, and In a telephone equipped with a hold control section for controlling to send a hold sound generated by the hold sound generation circuit to a handset earpiece, a built-in speaker and a telephone line by pressing the hold button, A call waiting detection circuit that outputs a detection signal when a call waiting signal is detected while the call is temporarily held by pressing the button, and a call waiting notification control unit that outputs a control signal based on the detection signal from the call waiting detection circuit. And a control signal from this call waiting notification control unit to generate a signal sound to notify the call waiting call And a signal sound generating circuit for transmitting from the speaker together with the holding sound.

According to a second aspect of the present invention, in the telephone according to the first aspect, the hold control unit receives the control signal from the call waiting notification control unit and causes the hold sound generation circuit to hold the call on the speaker. It is configured to stop sound output.

(Operation) The operation of the telephone set according to claim 1 will be described.

When the call is put on hold by pressing the hold button, the hold control unit sends the hold sound generated by the hold sound generation circuit to the earpiece of the handset, the built-in speaker, and the telephone line. When the call waiting signal from the third party is input from the third party in the call on-hold state, the detection signal is output from the call waiting detection circuit. The call waiting notification control unit outputs a control signal to the signal sound generation circuit based on the detection signal from the call waiting detection circuit. The signal sound generation circuit receives a control signal from the call waiting notification control unit, generates a signal indicating the arrival of the call waiting call, and outputs the signal together with the hold sound from the built-in speaker. Thus, even if the user puts on the handset or speaks from his / her ear, he / she can know that there is a call from a third party.

 The operation of the telephone set according to claim 2 will be described.

When the call is put on hold by pressing the hold button, the hold control unit sends the hold sound generated by the hold sound generation circuit to the earpiece of the handset, the built-in speaker, and the telephone line. When the call waiting signal from the third party is input from the third party in the call on-hold state, the detection signal is output from the call waiting detection circuit. The call waiting notification control unit outputs a control signal to the hold control unit based on the detection signal from the call waiting detection circuit. Upon receipt of this control signal, the hold control unit stops the output of the hold sound from the hold sound generation circuit to the speaker. As a result, the speaker emits a signal sound notifying the incoming call of the call waiting, instead of the holding sound up to that time, so that it is possible to clearly distinguish between the on-hold status and the call from the third party.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

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

In the figure, a rectifier circuit 2 for keeping the polarity of a DC power supply constant is connected to a telephone line 1, and the rectifier circuit 2 is connected to a telephone circuit via a hook switch 3 for closing and opening the telephone line 1. 4 is connected. A call waiting detection circuit 5 for detecting a call signal from a third party (hereinafter, called a call waiting signal) is connected to one output 4a of the telephone circuit 4, and a microphone is connected to the other output 4b. A handset 6 having a built-in earpiece and an earpiece is bidirectionally connected. And the call waiting detection circuit 5
The output 5a is connected to the control circuit 10 that controls the operation of the entire telephone.

The control circuit 10 includes a hold control unit 101 and a call waiting notification control unit 102, and a hold button 7 for issuing a hold command by a pressing operation is connected to an input of the hold control unit 101. Further, one output 101a of the hold control unit 101 is
While being connected to the hold sound generation circuit 8 that generates a hold signal, the other output 101b is connected to the call waiting notification control unit 10
Connected to two. When the hold button 7 is pressed, the telephone line 1 is captured and a drive signal is sent to the hold sound generation circuit 8 while a control signal is given to the call waiting notification control unit 102.

The output 102a of the call waiting notification control unit 102 is connected to the signal sound generating circuit 9 that emits a signal sound, and when a detection signal from the call waiting detection circuit 5 is received, a drive signal is sent to the signal sound generating circuit 9. It is like this.

One output 8a of the hold sound generating circuit 8 is led to the earpiece, which is the receiving section of the handset 6, via the telephone circuit 4, and the other output 8b is given to the amplifier 11. The output 9a of the signal sound generating circuit 9 is also given to the amplifier 11. The amplifier 11 is configured to amplify the hold sound and the signal sound and guide the amplified sound to the speaker 12.

Next, an operation in the case where the speaker 12 emits a signal sound informing that there is a call from a third party in a call hold state will be described.

In this case, the call waiting notification control unit 102 of the control circuit 10
The operation start and the operation end are controlled by a control signal from the hold control unit 101, and it is assumed that the operation is in a non-operation state in a normal call state that is not the hold state.

When the user wants to interrupt the call during a call with the other party, when the hold button 7 is pressed, the hold control unit 101 of the control circuit 10 determines a hold command and outputs a drive signal to the hold sound generation circuit 8. And the operation start instruction signal to the call waiting notification control unit 102. The hold sound generation circuit 8 is driven based on this hold command, and when the hold sound signal is sent to the telephone circuit 4, the telephone circuit 4 is switched to the hold mode, and the hold sound signal is transmitted to the telephone circuit 4, the hook switch 3, and the rectifier. It is sent to the other party's telephone through the circuit 2 and the telephone line 1. Further, since the hold sound signal is sent to the earpiece of the handset 6 and also to the speaker 12 via the amplifier 11, the hold sound flows from the earpiece and is also emitted from the speaker 12. Therefore, even if the user temporarily releases the handset 6 from his / her ear or puts it away from the telephone during a call, the user can confirm that the handset 6 is on hold by playing a holding sound from the speaker 12. it can.

On the other hand, the call waiting notification control unit 102 includes the hold control unit 101.
It is started by the operation start instruction signal from. And when there is a call from a third party in this hold state,
That is, when the incoming call signal of the call waiting call is input, the call waiting detection circuit 5 detects the incoming call signal and outputs the detection signal. Upon receiving this detection signal, the call waiting notification control unit 102 sends a drive signal to the signal sound generating circuit 9,
The signal sound generation circuit 9 is operated to output a signal sound. This signal sound is amplified by the amplifier 11 and supplied to the speaker 12, so that the signal sound that indicates the arrival of the call waiting is emitted from the speaker 12 together with the hold sound. As a result, the user can identify that the call waiting call has been received even while the call is on hold, and it becomes possible to take a call with a third party. When the hold button 7 is pressed in the hold state, the hold control unit 101 determines a hold release command and sends a drive stop signal to the hold sound generation circuit 8 and the call waiting notification control unit 102.
To the operation stop instruction signal. The hold sound generation circuit 8 stops driving based on the hold release command, and stops sending the hold sound signal. On the other hand, the call waiting notification control unit 102 stops its operation in response to the operation stop instruction signal from the hold control unit 101. As a result, the incoming call signal for the subsequent call waiting is sent from the speaker of the handset 6 together with the voice signal, as in the conventional telephone.

In the above explanation, when a call waiting call is received while the call is on hold, the signal sound of the call waiting call is emitted from the speaker 12 together with the hold sound. When
The call waiting notification control unit 102 sends a control signal to the hold control unit 101, and the hold control unit 101 is configured to prohibit the output of the hold sound to the amplifier 11 of the hold sound generation circuit 8 based on this control signal. With such a configuration, only the signal sound that indicates the arrival of the call waiting call is emitted from the speaker 12, which is convenient for the user. In addition, by prohibiting the sending of the operation start instruction signal and the operation stop instruction signal from the hold control unit 101 to the call waiting notification control unit 102 and keeping the call waiting notification control unit 102 always in the operating state, Irrespective of whether or not there is an incoming call to the call waiting system, the speaker 12 can always emit a signal sound indicating the incoming call to the call waiting system.

(Effects of the Invention) In the telephone set according to the first aspect of the present invention, when the incoming call signal of the call waiting call is input from the third party while the call is temporarily held, the signal sound generating circuit causes the control signal from the call waiting notification control unit to be sent. When a call is received, a signal to notify the call waiting call is generated, and the built-in speaker emits it together with the hold sound. Therefore, even if the user puts the handset on the hold or speaks from the ear, the call from the third party can be made. You can know that there is. Further, in the telephone set according to claim 2 of the present invention, when a call waiting signal from a third party is input in the call on-hold state, the speaker announces the call waiting call instead of the hold tone until then. Since the signal sound is emitted, the user can clearly distinguish between the call on hold and the call from the third party.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a telephone of the present invention. 1 ... telephone line 5 ... call waiting detection circuit 6 ... handset 7 ... hold button 9 ... signal tone generation circuit 10 ... control circuit 101 ... call waiting notification control unit (control means) 12 ... speaker 13 ... LED (informing means)

Claims (2)

(57) [Scope of utility model registration request] 1. A holding button, a holding sound generating circuit for generating a holding sound, and a holding sound generated by the holding sound generating circuit when the holding button is pressed during a call with the other party. In a telephone equipped with an earpiece, a built-in speaker, and a hold control unit for controlling transmission to a telephone line, a detection signal is detected when an incoming call signal of a call waiting call is detected in a temporary hold state of a call by pressing the hold button. The call-waiting detection circuit that outputs the call-waiting call, the call-waiting notification control unit that outputs the control signal based on the detection signal from the call-waiting detection circuit, and the signal sound that receives the control signal from the call-waiting notification control unit As they occur
A telephone including a signal sound generation circuit for transmitting the signal sound together with the hold sound from the speaker. 2. The telephone according to claim 1, wherein the hold control section receives a control signal from the call waiting notification control section and stops the hold sound generation circuit from outputting the hold sound to the speaker. .