JPS61201555A - Electronic key telephone set - Google Patents

Abstract

PURPOSE:To send a door phone call tone from an external speaker by providing a switching means connecting a doorphone incoming detecting section with an amplifier circuit. CONSTITUTION:When a sound signal (a) being a call tone is sent from the doorphone 1, the doorphone incoming detection section 2 detects the incoming of the sound signal (a) of the call tone to connect a switch 6. The sound signal (a) is sent to a key telephone set 3 and inputted to an amplifier circuit 4 via the switch 6 and the sound signal (a) amplified by the amplifier circuit 4 is sent as the call tone from the external speaker 5. When the call tone from the doorphone 1 is stopped, the sound signal (a) is lost and the section 2 disconnects the switch 6. Thus, the transmission of call tone from the external speaker 5 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic button telephone device, and particularly to display of a doorbell ring tone.

[Conventional technology]

Conventionally, in this type of electronic key telephone with a doorbell call function, when a visitor calls from the doorbell, a ring tone is sent out from a speaker built into the key telephone to notify the user, who is at home, of the visitor. Ta.

FIG. 2 shows a conventional electronic key telephone device. This electronic button telephone device is a doorbell. Door phone incoming call detection unit 2. Button phone 3. It is composed of an amplifier circuit 4 and an external speaker 5.

Next, the operation of this device will be explained. The ringing tone from the door phone 1 becomes an audio signal a, and an incoming call is detected by the door phone incoming call detection section 2. The audio signal a is input to the button telephone 3 and sent out as a ringing tone from a built-in speaker (not shown).

Furthermore, the audio signal for external simultaneous calling outputted from the key telephone 3 by the user's operation is amplified by the amplifier circuit 4 and then sent out as a ringing tone from the external speaker 5. That is, the ringing tone from the door phone 1 is not directly transmitted from the external speaker 5.

[Problem that the invention seeks to solve]

In the conventional electronic button telephone device described above, if the user is far from the electronic button telephone device or in a room where the electronic button telephone device is not installed, or if the electronic button telephone device is in a place where there is a lot of external noise, If the doorbell is installed in a location, it may be difficult to hear the ringer from the doorbell.
There was a problem in that visitors were made to wait unnecessarily.

[Means for solving problems]

In order to solve these problems, the present invention provides an electronic button telephone device with switching means for connecting the door intercom incoming call detection section and the amplifier circuit.

[Effect]

In the present invention, the switching means directly outputs the doorbell ringing tone from the external speaker.

〔Example〕

FIG. 1 shows an embodiment of an electronic key telephone device according to the present invention. In FIG. 1, 6 is a switch serving as a switching means for connecting the intercom incoming call detection section 2 and the amplifier circuit 4. In FIG.

Next, the operation of the apparatus configured as described above will be explained. When the door phone 1 sends out the audio signal a with the ringing tone, the door phone incoming call detecting section 2 detects the arrival of the audio signal a with the ringing tone and connects the switch 6 . The audio signal a is sent to the button telephone 3 and is also input to the amplifier circuit 4 via the switch 6. The audio signal a amplified by the amplifier circuit 4 is sent out as a ringing tone from the external speaker 5.

When the ringing from the door phone 1 stops, the audio signal a disappears and the door phone incoming call detection section 2 turns off the switch 6. As a result, the ring tone output from the external speaker 5 is stopped.

〔Effect of the invention〕

As explained above, the present invention provides an electronic key telephone device with a switching means for connecting the doorbell incoming call detection section and the amplifier circuit, so that the doorbell ring tone can be transmitted from the external speaker.
The ring tone from the built-in speaker of the button telephone is 6.
This has the effect of being able to notify you of the doorbell ringing tone even in places where iLU is not available.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing an embodiment of an electronic key telephone device according to the present invention, and FIG. 2 is a system diagram showing a conventional electronic key telephone device. l... Door phone, 2... Door phone incoming call detection unit,
3... button telephone, 4... amplifier circuit, 5...
...External speaker, 6...Switch.

Claims (1)

[Claims] A doorbell used for a call between a visitor and a person at home; a doorbell incoming call detection section that detects a ringing tone from the doorbell; a button telephone to which a voice signal output from the doorbell incoming call detection section is input; and this key telephone. In an electronic button telephone device having an amplifier circuit for amplifying an audio signal of external paging outputted from the amplifier circuit and an external speaker connected to the amplifier circuit, switching means for connecting the door intercom incoming call detection section and the amplifier circuit. An electronic button telephone device comprising: