JPH088603B2 - Telephone device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device capable of making a call at a plurality of places with respect to one office line.

2. Description of the Related Art A parent-child telephone is known as a telephone device capable of making a call at a plurality of places with respect to one office line. In the parent-child telephone, the child telephone is arranged at a place distant from the parent telephone so that the call received by the parent telephone can be received by the child telephone.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the parent-child telephone, not only the parent telephone but also the child telephone having the function as a telephone is used.

The present invention solves such a conventional problem, and an object of the present invention is to provide an excellent telephone device which requires less equipment cost and is capable of making a call from a plurality of places.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention comprises a speaker, a microphone, and an attachment unit having an operation unit in addition to a main body unit having a normal telephone function. However, it is equipped with a control unit that switches the call selection means so that a call can be made.

Operation According to the present invention, therefore, the same use as a conventional parent-child telephone can be achieved by only providing an accessory having a simple structure in addition to the ordinary telephone.

Embodiment FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, 1 is a main body and 2 is an accessory. Reference numeral 3 in the main body 1 is a call circuit for making a call such as an office line, 4 is a calling sound source for notifying that an incoming call has arrived, 5 is an amplifier circuit for driving the speaker 6 and the speaker 7 of the accessory 2, and 8 is a microphone 9 And an amplification circuit for amplifying the sound of the microphone 10 of the attachment unit 2, 11 is a call detection circuit 12, and an operation unit 13
And a control unit for controlling the speakers 6 and 7 and the microphones 9 and 10 by a signal from the operation unit 14 of the attachment unit 2.

The control unit 11 has three relays 15, 16, which are call selection means.
Equipped with 17. The relay 15 is operated by a signal from the operation unit 13 of the main body unit 1, and the relay 16 is operated by a signal from the call detection circuit 12 and the operation unit 14 of the accessory unit 2.
17 operates according to a signal from the operation unit 14 of the accessory unit 2.

The switch 15A of the relay 15 is for switching the output of the speaker amplifying circuit 5 to the speaker 6 or the speaker 7, and the other switch 15B of the relay 15 is for outputting the output of the microphone amplifying circuit 8 to the microphone 9 or the microphone 10. It is for switching. The switch 16A of the relay 16 is for disconnecting the connection between the speaker amplifier circuit 5 and the speaker 6. Switch for relay 17
Reference numeral 17A is for connecting and disconnecting the connection between the microphone amplifier circuit 8 and the microphone 10 via the switch 15B.

Next, the operation of the above embodiment will be described. In the above embodiment, when a call is made to the telephone of the main unit 1, a signal is sent from the call detection circuit 12 to the control unit 11, and the control unit
Reference numeral 11 causes the calling sound source 4 to output a ringing tone and amplifies it by the amplifier circuit 5. At the same time, the control unit 11 turns on the relay 16 and closes the switch 16A, so that the speaker 6 of the main body unit 1 and the speaker 7 of the accessory unit 2 both ring. Then, when the call switching button provided on the operation unit 14 of the accessory unit 2 is pressed, the control unit 11 turns off the relay 16 and opens the switch 16A so that only the speaker 7 of the accessory unit 2 sounds and the relay 17 Is turned on to close the switch 17A, and only the microphone 10 of the accessory 2 is connected to the amplifier circuit 8. As a result, a call from the accessory unit 2 becomes possible. When the call ends, the relay 17 is turned off and the switch 17A is opened.

On the other hand, there is a call to the main body 1 and both speakers 6
When the call switching button provided on the operation unit 13 of the main body unit 1 is pressed while 7 and 7 are ringing, the control unit 11 causes the relay 15
Switch on and switch its switches 15A and 15B,
The amplifier circuit 5 and the speaker 6 are connected to each other, and the amplifier circuit 8 and the microphone 9 are connected to enable a call from the main body 1. When the call ends, the relay 15 is turned off and the switches 15A and 15B are switched to the original connection to the accessory section 2 side.

As described above, according to the above-described embodiment, the speaker 6 of the main body 1 and the speaker 7 of the accessory 2 are connected to the amplifier circuit 5 when receiving a call.
Since a ringing tone for an incoming call is emitted from both the main body 1 and the auxiliary unit 2 by pressing the call switching button of the operation unit 13 or the operation unit 14, the control unit 11 is connected.
Controls the switch, and either one of the speaker and the microphone is connected to the station line, so that the main body and the accessory can be used as speakerphone functions in separate rooms with inexpensive equipment.

Further, in the above embodiment, only one attachment part 2 is provided, but it is also possible to install more attachment parts 2 and select them by the control unit 11 of the main body part 1.

EFFECTS OF THE INVENTION As apparent from the above-described embodiments, the present invention includes a speaker, a microphone, and an attachment unit having an operation unit in addition to a main unit having a normal telephone function. Each operation unit has a call switching button so that a ringing tone of an incoming call can be output from the main unit or an accessory unit, and the control unit controls the switch by this call switching button signal, Since either the speaker or the microphone is connected to the station line, it is possible to use the main unit and the accessory as speakerphone functions in different rooms with inexpensive equipment, and a simple configuration in addition to the ordinary telephone. It has an advantage that it can be used in the same way as a conventional parent-child telephone set by only providing the attached part.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a telephone device according to an embodiment of the present invention. 1 ... Main body, 2 ... Attachment, 3 ... Call circuit, 4 ...
Calling sound source, 11 …… Control unit, 6,7 …… Speaker, 9,10
...... Microphone, 13,14 …… Control panel, 15,16,17 …… Relay which is a call selection means, 15A, 15B, 16A, 17A …… Relay switch.

Claims (1)

[Claims] 1. A call circuit for making a call with an office line, a calling sound source for notifying an incoming call, a first amplifying circuit for amplifying a calling sound of the calling sound source, and a signal from the first amplifying circuit for a first switch. A first speaker for outputting a voice signal, a first microphone for inputting a voice signal, a second amplifier circuit for inputting a signal from the first microphone through a second switch and outputting the signal to the call circuit, and a call A main body part provided with a first operation part having a switching button and a control part for controlling the switch by a call switching signal from the first operation part, and a signal from a first amplification circuit of the main body part for the first switch A second speaker for outputting via a second microphone, a second microphone for outputting a voice to the second amplifying circuit through a second switch of the main body, and a call switching button, and a signal for a control unit of the main body. Output At least one accessory provided with a second operation part, and outputs a ringing tone from the first speaker of the main body and the second speaker of the accessory when an incoming call is received, A telephone characterized in that the control unit controls the first and second switches so as to select either one of the speaker and the microphone in response to a signal from a call switching button of the operation unit of the main body unit or the accessory unit. apparatus.