JPH04346544A - Telephone set with doorphone function - Google Patents

Abstract

PURPOSE:To add a means to a telephone set containing a doorphone function in order to receive a call from the partner even in a doorphone answer state. CONSTITUTION:In a doorphone answer state, a microphone 12 and a speaker 11 of a telephone set are switched to a microphone 21 and a speaker 22 of a doorphone respectively by a changeover switch 13. The level of the voice received from a telephone set circuit 17 is reduced by an attenuator 16 and then mixed with the voices collected by the microphone 21 by a mixing circuit 15. These mixed voices are sent to the speaker 11. Thus the communication is kept with the partner even in a doorphone answer state.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone having a doorbell function.

0002

2. Description of the Related Art Telephones are intended for voice calls, but recently, telephones incorporating door intercom functions have been sold. When using these telephones with a doorbell function, the microphone and speaker of the telephone handset, etc., are connected to the telephone line side when used as a telephone, and when used as a doorbell, they are connected to the speaker and microphone of the doorphone respectively. Switching.

0003

[Problem to be Solved by the Invention] For this reason, if there is a visitor while talking on the phone and you answer the doorbell, the microphone and speaker will be completely disconnected from the person on the other end of the phone call. When the response to the person is finished,
Once again, make the other party wait until the phone side switches the microphone and speaker. In this case, even if the person on the other end of the call has something urgent to do and wants to end the call while you are answering the doorbell, the person on the other end has no way to notify you of this, and it becomes frustrating for them to switch to the telephone side. The drawback was that there was no other option but to wait while waiting or end the call unilaterally without permission.

SUMMARY OF THE INVENTION In order to solve the above-mentioned drawbacks, an object of the present invention is to provide a telephone with a doorbell function that provides good service by providing a means for contacting the other party even when answering the doorbell. .

[0005]

[Means for Solving the Problems] A telephone with a doorbell function according to the present invention includes a changeover switch that switches the microphone and speaker of the telephone to the doorphone side when answering the doorbell, an attenuator that lowers the level of received audio, and the attenuator. The device is equipped with a mixing circuit that mixes the output of the device with the sound picked up by the microphone of the doorbell.

[0006]

[Operation] In the present invention, even if you answer the doorbell during a call, the voice of the person on the other end of the call can still be heard, albeit at a low level. Therefore, when the other party calls out to you in a slightly louder voice, you can notice this, switch the microphone and speaker to the telephone side, and listen to the other party's business.

[0007]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, in which 10 is a main body, 20 is a doorbell unit, 11 is a speaker, 12 is a microphone, 13 is a changeover switch for switching between a doorbell and a telephone. 14 is a doorbell response button that controls this changeover switch 13; 15 is a mixing circuit that mixes the voice from the telephone side and the voice from the doorphone unit 20; and 16 is an attenuator that attenuates the voice from the telephone side to a preset level. , 17 are telephone circuits, and the main body 10 is configured as described above. 21 is a microphone of the door phone unit 20, 22 is a speaker, and 30 is a telephone line.

Next, the operation will be explained. The telephone circuit 17 is the same as that implemented in a normal telephone, and when the speaker 11 and microphone 12 are directly connected to it, it operates as a normal telephone.

The changeover switch 13 is normally turned to the a side, and the telephone is connected to the other party by the normal operation of the telephone when making and receiving calls. In this case, the voice of the other party sent via the telephone line 30 output from the telephone circuit 17 is reproduced by the speaker 11 of the main body 10 via the changeover switch 13, and the voice collected by the microphone 12 is selector switch 1
3 to the telephone circuit 17, and sent out to the telephone line 30 for telephone conversation.

When the doorbell response button 14 is operated to answer the doorbell in the above-mentioned call state, the contact of the changeover switch 13 falls to side b, and the microphone 12 of the main body 10 is connected to the speaker 22 of the doorphone unit 20. The sound collected by the microphone 12 of the main body 10 is reproduced by the speaker 22 of the door phone unit 20. on the other hand,
The visitor's voice collected by the microphone 21 of the door phone unit 20 is input to the mixing circuit 15. The other input of this mixing circuit 15 is inputted with the voice from the other party on the telephone, which is output from the telephone circuit 17 and is attenuated by an attenuator 16 . Therefore, the output of the mixing circuit 15 is a mixture of the visitor's voice collected by the microphone 21 of the door phone unit 20 and the attenuated voice of the other party on the phone, and the output is reproduced to the speaker 11 via the changeover switch 13. be done.

[0012] Through the above operations, it becomes possible to have a conversation with a visitor using the doorbell during a call, but the level of the voice of the person on the other end of the phone call has also been lowered to a level that does not interfere with conversation with the visitor. Controlled by hearing. Therefore, if the person on the other end of the phone calls out in a slightly loud voice while you are having a conversation with a visitor, you will notice the call, operate the doorbell response button 14 again, and press the selector switch 1.
It is possible to talk to the person on the other end of the phone by flipping 3 to side a.

[0013]

[Effects of the Invention] As explained above, in the present invention, when answering the doorbell while on the phone, the microphone is completely switched to the doorphone side, but the speaker is equipped with an attenuator for the sound from the doorphone through a changeover switch. The audio is mixed with the voice of the person on the other end of the phone call at a lower level. Therefore, even if you answer a visitor using the doorbell function during a call, the voice will not be transmitted to the other party, but the other party's voice will be audible at a slightly lower level, so if you answer a visitor using the doorbell, the voice will not be heard. When the person on the other end of the line calls out in a slightly louder voice when the other party wants to end the call, the caller notices the call, switches the microphone and speaker to the phone side, speaks to the other party, ends the call, and then returns to greet the visitor. This has the advantage of being able to answer the doorbell, reducing the need for the other party to wait unnecessarily, and making it possible to answer visitors using the doorbell with peace of mind.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

[Explanation of symbols]

10 Main body 11 Speaker 12 Microphone 13 Selector switch 14 Doorbell answer button 15 Mixing circuit 16 Attenuator 17 Telephone circuit 20 Door phone unit 21 Microphone 22 Speaker 30　Telephone line

Claims (1)

[Claims] 1. A telephone having a doorphone function, which includes a changeover switch that switches the microphone and speaker of the telephone to the doorphone side when answering the doorphone, an attenuator that lowers the level of received audio, and an output of the attenuator that connects the telephone to the doorphone. A telephone with a door intercom function, characterized in that it is equipped with a mixing circuit that mixes sound picked up by a microphone.