JPH01165251A - Telephone set device - Google Patents

Abstract

PURPOSE:To make the switching of a speech mode unnecessary in the case of performing the next speech with an opponent with a strong signal by providing a pre-amplifier ON/OFF switch for amplifier mode time having ordinary mode/amplifier mode switching signal input and amplifier mode reset signal input. CONSTITUTION:The pre-amplifier ON/OFF switch 10 for amplifier mode time is used in an operation to operate or stop two pre-amplifiers 3 and 7 for amplifier mode time, and the two pre-amplifiers 3 and 7 for amplifier mode time are turned ON/OFF by a signal inputted to the ordinary mode/amplifier mode switching signal input 11. In other words, an ordinary mode and an amplifier mode are switched alternately. Also, by placing a transmitter or a receiver on a telephone set device main body after completing the speech at the amplifier mode, a signal is inputted to the amplifier mode signal input 12 of the pre-amplifier ON/OFF switch 10 for amplifier mode time, and the speech mode is returned to the ordinary mode. Thus, it is not required to switch the speech mode, realizing comfortable speech.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to telephone devices in general, and particularly to improving communication performance when a weak signal is used, such as when communicating with a remote location.

[Conventional technology]

The configuration of a conventional telephone device is as shown in Figure 3. (1) is a 2-wire/4fN converter, (2) is a transmitting main amplifier, (3) is a transmitting preamplifier 2 for use in amplification mode, (4)
is the transmitting preamplifier 1, +51 is the transmitter, (6) is the receiving preamplifier 1, f7+ is the receiving preamplifier 2 for amplification mode, (8) is the receiving main amplifier, (9) is the receiver, (Ill is the normal mode/ This is the amplification mode switching signal input.

A typical telephone device is constructed as described above. In a normal call, on the transmitting side, the transmitter (5) converts the voice into an electrical signal, the converted electrical signal is amplified by the transmitting preamplifier 1 (4), and further amplified by the transmitting main amplifier +21. is sent to the 2-wire/4-wire converter (1), and the electrical signal is sent to the other party, thereby transmitting the voice. On the receiver side, the electrical signal sent to the 2-wire/4-wire converter (1) is amplified by the receiver preamplifier 1 (6), further amplified by the receiver main amplifier (8), and the electrical signal is transmitted to the receiver (9). The voice of the other party is transmitted by converting the signal to voice.゛Also, when the voice signal is weak during a call with the other party, the transmitting preamplifier 2 (for amplification mode) can be used as an amplification mode.
3) and the receiver preamplifier 2 (7) for amplification mode,'
Manually turn on the switch attached to the fJt handset.
By operating in the 1st normal mode, weak signals are amplified and communication performance is improved.

[The problem that the invention attempts to solve]

Conventional telephone equipment is configured as described above, and the amplification mode is maintained even after a call in the amplification mode ends, and when talking with a party with a strong signal for which the normal mode is sufficient, the communication between the parties is difficult. The problem was that the signal was so strong that the amplification mode had to be returned to normal mode to make a call.

This invention was made to solve the above problems, and when a call is completed in amplification mode, the call mode returns to normal mode, and if the next call is with a party with a strong signal, it switches between 5 call modes. The purpose is to obtain a telephone device that is not necessary.

[Means for deciding the problem]

The telephone device according to the present invention has a transmitting preamplifier 2 for use in amplification mode, a receiving preamplifier 2 for use in amplification mode, and a switch for switching between the two preamplifiers for use in the amplification mode. There is an amplification mode switching signal input and an amplification mode reset input.

[For production]

In the telephone device according to the present invention, the normal mode and the amplification mode are alternately switched by the normal mode/amplification mode changeover switch, and the call mode returns to the normal mode by placing the receiver or transmitter on the telephone after finishing the call. do.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (1) is a 2-wire/4-wire converter, (2) is a transmitting main amplifier, (3) is a transmitting preamplifier 2 for use in amplification mode, +41 is a transmitting preamplifier L, and +51 is a transmitter ( 6) is the receiver preamplifier 1, +71 is the receiver preamplifier 2 for the amplification mode, (81 is the receiver main amplifier, (9) is the receiver, (IG is the preamplifier 0N10FF switch for the amplification mode, (111 is the normal mode/amplification mode switch) The signal input is the amplification mode reset signal input.

In the telephone device configured as described above, in a normal mode call, on the transmitting side, the transmitter (5) converts the voice into an electrical signal, and the converted electrical signal is transmitted to the transmitting preamplifier 1 (4). Amplified and further amplified by the transmitting main amplifier (2), 2 wire/4#! The electrical signal is sent to the converter (1) and transmitted to the other party, thereby transmitting the sound. On the receiver side, the electrical signal sent to the 2-wire/4AL converter (1) is amplified by the receiver preamplifier 1 (6), further amplified by the receiver main amplifier (8), and the electrical signal is transmitted to the receiver (9). The other party's voice can be transmitted by converting it to voice. It can also be used in amplification mode when the other party's voice signal is weak during a call.

By operating the transmitting preamplifier 2 (3) for amplification mode and the receiving preamplifier 2 (7) for amplifying mode,
It amplifies weak signals and improves communication performance.

Two preamplifiers t3) for amplification mode, +71
To operate or stop the operation, the preamplifier for amplification mode is 0N.
Using the 10FF switch +11, the two preamplifiers (31, (71) for the amplification mode are switched to
N10 F F. In other words, the normal mode and the amplification mode are switched alternately. In addition, by placing the handset or transmitter on top of the telephone device after finishing a call in amplification mode, the preamplifier for amplification mode can be set to 0.
A signal is input to the amplification mode reset signal @ of the N10FF switch uG, and the call mode returns to normal mode.

The preamplifier 0N10FF switch αe for the amplification mode has a flip-flop configuration, and pulse signals can be input to the normal mode/amplification mode switching signal input 1J and the amplification mode reset signal input αe. When a pulse signal is applied to the normal mode/amplification mode switching signal input, the preamplifier for amplification mode goes to 0N each time.
Repeat 10FF. Also, if a pulse signal is added to the amplification mode reset signal, the preamplifier for amplification mode will turn off.
Becomes FF.

In the above embodiment, switching between the normal mode and the amplification mode is performed by inputting an external pulse. In other words, it was done manually, but as shown in Figure 2, the receiving preamplifier 1
An audio signal level detector and a pulse generator are installed between (6) and the reception preamplifier 2 (7) for amplification mode, and when the audio signal is below a certain level, the audio signal level detector detects and generates a pulse signal. A pulse signal may be input from the device to the normal mode/amplification mode switching signal input to automatically switch from the normal mode to the amplification mode.

〔Effect of the invention〕

As explained above, the present invention provides a preamplifier 0N10FF switch for amplification mode which has a normal mode/amplification mode switching signal input and an amplification mode reset signal input, so that a pulse signal can be input to switch the call mode. Moreover, after a call in the amplification mode, there is an effect that when talking with a party with a sufficiently strong signal, there is no need to switch between 5 call modes, and a comfortable call can be made.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a telephone device according to an embodiment of the present invention, FIG. 2 is a block diagram showing a telephone device according to a modification of the embodiment of the invention shown in FIG. 1 is a block diagram showing a typical telephone device; FIG. In the figure, (1) is a 2-wire/4-wire converter, (2) is a transmitter main amplifier & (3) is a transmitter preamplifier 2 for use in amplification mode, (41 is a transmitter preamplifier L, and 51 is a transmitter. ,
(6) is the reception preamplifier l h L71 is the reception preamplifier 2k for the amplification mode (81 is the reception main amplifier, (9
) is a transmitter. For songs, preamplifier ON10 FF switch for amplification mode, +U+ is normal mode/amplification mode switching signal input. (2) is an amplification mode reset signal input, αJ is an audio signal level detector, and α gradient is a pulse signal generator. The same symbols indicate the same or corresponding parts. Agent Dan Yu Oiwa 7:/lTh
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Claims (1)

[Claims] (1) A telephone device having an amplification means for amplifying a signal and a switch means for controlling the amplification means, which can be switched to a normal operation mode by an external signal input applied to the switch means of the telephone device. A telephone device characterized in that the amplification operation mode is set alternately, and the amplification operation mode is automatically canceled and returned to the normal operation mode by another external signal input applied to the switch means of the telephone device. .