JPH0243868A - Handset with switch and communication equipment provided therewith - Google Patents

Abstract

PURPOSE:To obtain a 4-wire type handset with switch able to control an external device by using one wire of each signal line of a transmission means, a reception means and a control signal output means in common. CONSTITUTION:Each one wire of a transmitter 11, a receiver 12 and a pushbutton switch 13 is used in common and connected to ground of a device 14 opposite to an interface. While no pushbutton switch 13 is depressed, an input side 80 of an inverter 24 is biased to a positive power supply 50, an output side 82 goes to an L level, a reception analog switch 20 is driven and the inputted voice signal is outputted by the receiver 12 as a voice. When the pushbutton switch 13 is depressed, the input side 80 of the inverter 24 is connected to the ground of the interface device 14, the level of the output side 82 changes from an L level to H level, a transmission side analog switch 20 is driven and the voice inputted to the transmitter 11 is sent to an external device. Thus, the talking and control information are outputted externally through 4 communication wires.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a handset with a switch, and particularly to a handset with a switch that is advantageously applied to communication devices such as operator consoles of automatic exchanges.

(Prior Art) As is well known, there are two types of communication systems: "alternate communication system" and "simultaneous communication system." The alternating call method is a method in which callers alternately switch between sending and receiving calls using a push-button switch or the like. Therefore, in this system, in addition to the four communication lines used for sending and receiving calls, two control lines are required to convey control information for the push-button switch that switches between sending and receiving calls. Therefore, this handset is connected by a 6-wire connection cord.

Further, in order to make the circuit of the handset and receiver of the alternating call system a four-wire type, for example, there are some that use a common switch control line and a transmission line. This is done by connecting a push button switch in parallel to the transmission line, and pressing the switch stops the transmission.

Furthermore, the simultaneous call method is a call method in which sending and receiving calls are performed at the same time. For this reason, if you are only having a normal conversation, there is no need for a switching operation like in the alternate call system.However, even in this case, if you want to control external devices etc. using control signals, you will need to use a control line in addition to the call line. A line is required. Therefore, the handset that controls such an external device is a 6-wire type% (Problem to be solved by the invention) However, since the cord connected to the handset is usually a 4-wire type, the handset is connected to a 6-wire type. If you use this method, you will need to prepare a special cable, and if you share the transmission line and control line, you can use a 4-wire connection cord, but this is only applicable to the alternate call method. Furthermore, the information on this control line cannot control external devices, and the functions of the handset are fixed.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate such drawbacks of the prior art and provide a four-wire switched handset capable of controlling an external device and a communication device having the same.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a transmitting means for converting input voice energy into an electric signal and transmitting the electric signal, and converting the input electric signal into voice energy. A handset with a switch has a receiver means for converting the voice energy into voice energy and outputting the voice energy to the outside, and a control signal output means for outputting a control signal according to the operation state. One line of each of the signal lines is common.

(Function) When the switch-equipped handset according to the present invention is connected to an interface device having a function of making alternate calls, the voice from the other party can be heard when the control signal sending means is not operated, and the control signal can be heard from the other party. When the sending means is operated, a control signal is sent to the ink face device, and the sending means can send voice to the other party. Also,
Even when an interface device with other functions is connected to the switched handset, various controls on other devices can be performed via the interface device or this device by operating the control signal sending means. .

(Example) Next, an example of a handset with a switch according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, an operator console housed in an automatic switchboard,
An embodiment of a handset with a switch according to the present invention is shown, which is applicable to a handset of a communication device such as a telephone, or a base unit or slave unit of an intercom system. As shown in the figure, a switched handset 1 is connected to a pair interface device 14 via terminals 1 to 4, and this device 14 allows voice signals to be exchanged in an alternate conversation system. In this embodiment, the handset l exchanges voice signals by an alternate conversation method, but this embodiment is not particularly limited to the alternate conversation method, and can be performed simultaneously depending on the circuit configuration of the interface device 14. It can also be used as a telephone handset.

As shown in the figure, the switched handset 1 has a transmitter 11 that converts audio energy into electrical energy and a receiver 12 that converts electrical energy into audio energy. The handset l also has a push-button switch 13 whose contacts make only while the switch is pressed;
In this embodiment, when this switch 13 is on, a voice signal is transmitted to the other party.

These transmitter 11, receiver 12 and switch 13 are
It is connected to connection terminals 1 to 4 that connect to the interface device 14 . That is, one transmission line 100 of the transmitter 11 is connected to the terminal 1, and the other transmission line 102 . One receiving line 104 of the handset 12
and a ground wire 11 which is one communication line of the switch 13.
0 are connected to each other.

Further, the other receiving line 108 of the handset 12 is connected to the terminal 2, and the control output line 112, which is the other communication line of the switch 13, is connected to the terminal 3.

The interface device 14 is a device that activates either the handset 11 or the handset 12 in accordance with the control output of the push-button switch 13 so that the handset l can perform an alternating conversation. The interface device connects the terminal 4 to the ground of this device 14. The interface device 14 has an inverter 24 whose input side 80 is biased with a constant voltage power supply 50, which is connected via the terminal 3 to the control output line +12 of the switch 13.

The inverter 24 is a polarity conversion element that outputs a polarity opposite to the polarity input to the input side 80 to the output side 82. Therefore, when the switch 13 is not pressed, the output side 82 of the inverter 24 is set to "L" due to the bias of the power supply 50.
”, and when the switch 13 is pressed, the input side 8
0 is connected to the ground of the device 14 through the switch 13, so the output side 82 of the inverter 24 becomes "H".
The output side 82 of is connected to the control signal input terminals of the analog switch 20 on the transmitting side and the analog switch 20 on the receiving side. Furthermore, as shown in the figure, it is also possible to connect the output side 82 of the inverter 24 to other devices as necessary, and in this case, the control signal of the switch 13 can be sent to the other device as a breath talk signal. It will be done.

The transmitter analog switch 20 is a switch that outputs the audio signal input from the transmitter 11 to a connected external device when the output side 82 of the inverter 24 is rHJ.

The audio signal input side of this analog switch 20 is connected to a transmitting side amplifier 22, and this amplifier 22 amplifies the audio signal from the transmitter 11 to a predetermined magnitude. The receiving side analog switch 20 is configured so that the output side 82 of the inverter 24 is "
"L", the audio signal input from the external device is transmitted to the receiver 12.
This is a switch that outputs to This analog switch 20
The audio signal output side of is connected to a receiving side amplifier 22, and this amplifier 22 amplifies an external audio signal to a predetermined magnitude and sends it to the receiver 12.

When the push button switch 13 of the handset 1 is not pressed, the input side 80 of the inverter 24 is connected to the positive power supply 50.
is biased towards. Therefore, the output side 82 of the inverter 24 becomes "L", and the receiving side analog switch 20
is driven. Therefore, this analog switch 20
The audio signal input to the receiver 12 is amplified to an appropriate level of audio signal by the amplifier 22 on the receiver side.
is output as audio.

When the push button switch 13 is pressed, the inverter 24
The input side 80 of is connected to ground of the interface device 14. This causes the input side 80 to go from rHJ to “L”.
Therefore, the output side 82 also changes from "L" to rl("
, and the transmitting side analog switch 20 is driven.

Therefore, the voice input to the transmitter 11 is amplified as a voice signal of a predetermined magnitude by the transmitter amplifier 22 via the terminal 1, and is sent to an external device via the transmitter analog switch 20.

2 and 3 show a switched handset according to the prior art. As shown in Fig. 2, if a control line for the switch 13 is provided in addition to the telephone line, the switch 13 can control an external device, for example, but the number of connection cables for the handset circuit increases to six, and special Connection cables must be prepared, and if the switch 13 is connected in parallel to the transmitter 11 as shown in FIG. The control information of the switch 13 cannot be used by an external device.

In contrast, in this embodiment, one wire of each of the transmitter 11, the receiver 12, and the push button switch 13 is shared and connected to the ground of the interface device 14.

Therefore, it is possible to output call and control information to the outside through four communication lines, and the control information of this switch 13 is not limited to control information for the alternate call system, but can be used widely as various control information for external devices. can be used.

In this embodiment, a handset with a switch l according to the present invention is used.
An example of applying this to an alternate call system is shown.

This is because the ink face device 14 of the alternating conversation type is used as described above, and does not indicate that the present invention is limited to the alternating conversation type.

That is, if, for example, the analog switch 20 disposed on the interface device 14 is removed and the interface device 14 is set to a simultaneous call system, the handset l can make simultaneous calls, and the control information of the switch 13 can be transmitted via the interface device 14. It can be used as control information for other external devices. Furthermore, if it is desired to perform a plurality of controls on an external device, a control signal output circuit capable of outputting a plurality of pieces of control information may be used instead of the push button switch 13.

(Effects of the Invention) As described above, according to the present invention, information from the control signal output means can be used externally using four general connection cables.

Therefore, many functions of external devices can be controlled without the need for special cables.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of a handset with a switch function according to the present invention, and FIGS. 2 and 3 are block diagrams of a handset with a switch function according to the prior art. Explanation of symbols of important parts 1. 11゜12゜13゜14゜Handset with switch functionPush button switch interface device Patent applicant: Oki Electric Industry Co., Ltd. Person number: Takao MaruyamaConventional handset with switch circuit Figure 2 Switch Example of handset with attached handset Fig. 1 Conventional handset with switch circuit Fig. 3

Claims (1)

[Claims] 1. A transmitter that converts input audio energy into an electrical signal and transmits the electrical signal; A receiver that converts the input electrical signal into audio energy and outputs the audio energy to the outside. and a control signal output means for outputting a control signal according to an operating state, the handset includes the following steps: A handset with a switch characterized by having a common line. 2. It has a handset according to claim 1, and is characterized in that the transmitting means and the receiving means of the handset perform voice communication, and the control signal output means of the handset performs various communication controls. Communication device.