JPH04311135A - Handset - Google Patents

Abstract

PURPOSE:To offer a handset capable of attaining a private call, allowing a subscriber to speak from a position separated from the hand set and attaining simultaneous calls by plural subscribers. CONSTITUTION:The handset 1 is provided with the 1st transmitting/receiving part 2 arranged on one face and having a transmitter 3 and a receiver 4, the 2nd transmitting/receiving part 5 arranged on the other face and having a microphone 6 and a speaker 7 and a switch for switching the 1st and 2nd transmitting/receiving parts 2, 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone transmitting and receiving device which is a telecommunications terminal device.

0002

2. Description of the Related Art Conventionally, a transmitting/receiving device for a telephone or a portable wireless device is equipped with a transmitter at one end of one side of the handset and a receiver at the other end. When making a call, hold the handset with your other hand, place your ear against the receiver, and bring your mouth close to the transmitter. Therefore, the user can hold the handset with one hand and make a call while operating the device with the other hand.

0003

[Problems to be Solved by the Invention] However, in conventional telephone transmitting and receiving devices of this type, the receiving volume is generally constant;
Even if the receiver volume can be changed, it only increases the volume when it is difficult to hear the other party's voice, and there is a problem that it cannot be heard from a distance from the handset or can be heard by multiple people at the same time. .

On the other hand, there is a telephone set called a speakerphone as a transmitting/receiving device that allows a user to make a telephone call at a location remote from the transmitting/receiving device. However, this telephone does not have a handset, and while private calls can be received using earphones, other people can hear what you are saying, making it unsuitable for private calls.

[0005] The present invention solves these conventional problems by making it possible to make private calls using a handset, and to make it possible to make calls at a distance from the handset or to allow multiple people to talk at the same time. The purpose of the present invention is to provide an excellent transmitting and receiving device that is capable of transmitting and receiving telephone calls.

[0006]

[Means for Solving the Problems] In order to achieve the above object, a first aspect of the present invention provides a first transmitting/receiving section consisting of a transmitter and a receiver on one side of a handset, and A second transmitting/receiving section consisting of a microphone and a speaker is provided on the other surface of the device, and the first transmitting/receiving section and the second transmitting/receiving section can be switched for use.

A second aspect of the present invention is to provide a handset with one receiving section and one or two transmitting sections capable of switching the sound pressure level, and to use the handset by switching the sound pressure level of the receiving section. This is how it was done.

[0008]

[Operation] Therefore, according to the first aspect of the present invention, when making a private call, the transmitting/receiving device is switched to the first transmitting/receiving section, and the ear is placed on the receiver of the handset in the same manner as before. , place your mouth close to the handset to make a call. Furthermore, when talking at a location away from the handset or when a plurality of people are talking, the handset is switched to the second handset and the microphone and speaker are used to talk.

According to the second aspect of the present invention, when making a private call, the sound pressure level of the receiver of the handset is lowered, the ear is placed on the receiver as before, and the transmitter is placed on the receiver. Talk by bringing your mouth close to each other. Furthermore, when talking at a location away from the handset or when multiple people are talking, the sound pressure level of the receiver is raised to make the call.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the structure of an embodiment of the first aspect of the present invention, and is an example in which the present invention is applied to a transmitting/receiving device of a wireless communication device. In FIG. 1, 1 is a handset;
Reference numeral 2 denotes a first transmitter/receiver section provided on one side of the handset 1, and is composed of a transmitter 3 provided at one end and a receiver 4 provided at the other end. A second transmitter/receiver 5 is provided at one end of the other side of the handset 1, and is composed of a microphone 6 and a speaker 7. 8 is a press talk button, 9 is an operation button, and 10 is a liquid crystal display.

FIG. 2 is a schematic block diagram of the above-mentioned transmitting/receiving device. In FIG. 2, 11 is a transmitter amplifier connected to the transmitter 3 of the first transmitter/receiver section 2, and 12 is a receiver amplifier connected to the receiver 4. 13 is a microphone amplifier connected to the microphone 6 of the second transmitting/receiving section 5, and 14 is a speaker amplifier connected to the speaker 7. 15 is a switch for selectively connecting the transmitter amplifier 11 or the microphone amplifier 13 to send out a transmitting audio signal, and selectively connecting the receiving audio signal to the receiver amplifier 12 or the speaker amplifier 14 for receiving it; It's a switch. This changeover switch 15 may be provided with any of the operation buttons 9 of the handset 1, or may be used as a dedicated switch independent of the operation buttons 9 on the handset 1.
may be provided.

Next, the operation of the above embodiment will be explained. In the above embodiment, when starting a call, the user first presses the press talk button 8, and then presses the operation button 9 necessary for transmission or reception while looking at the liquid crystal display 10. When making a private call, the selector switch 15 is connected to the a side so that the transmitting audio signal is sent from the handset amplifier 11, and the receiving audio signal is guided to the handset amplifier 12. The user puts his ear to the receiver 4 of the handset 1 and brings his mouth close to the transmitter 3 to make a call. Also, you can talk while away from handset 1,
When a plurality of people are talking at the same time, the changeover switch 15 is connected to the b side so that the transmitting audio signal is sent out from the microphone amplifier 13, and the receiving audio signal is guided to the speaker amplifier 14. Make a call at a location away from the handset 1.

As described above, according to the first embodiment of the invention, when making a private call, the transmitting/receiving device is switched to the first transmitting/receiving unit 2, and the handset 1 is connected as before. When making a call by placing your ear on the receiver 4 and bringing your mouth close to the transmitter 3, or when making a call at a distance from the handset 1, or when making a call with multiple people,
Switch the transmitting/receiving device to the second transmitting/receiving section 5 and use the microphone 6.
Since the telephone conversation is carried out using the speaker 7, there is an advantage that one handset can be used for private and non-private purposes.

Further, since the operation button 9 and the liquid crystal display 10 are arranged on the same side of the handset 1 where the microphone 6 and the speaker 7 are provided, while operating the operation button 9, the liquid crystal display It has the advantage that it is possible to talk using the microphone 6 and speaker 7 while looking at the screen 10.

FIG. 3 shows the configuration of another embodiment of the first aspect of the present invention, in which the same elements as in the embodiment shown in FIG. 1 are given the same reference numerals. This embodiment differs from the above embodiments in that the transmitter 3 and microphone 6 in FIG. The mouthpiece 17 is provided near the center of the mouthpiece 17, which is provided so as to penetrate through the other surface.

Therefore, this embodiment has the advantage that the number of parts can be reduced because the microphone 16 can be used in common for transmission in both private and non-private situations.

In this embodiment, the amplification factor of the microphone amplifier connected to the microphone 16 is made variable, and when making a private call, the amplification factor is automatically reduced in conjunction with the changeover switch. , handset 1
When talking at a location far away from the speaker, it is preferable to switch the changeover switch to the speaker 7 side and automatically increase the amplification factor of the microphone 16.

FIG. 4 shows the configuration of an embodiment of the second aspect of the present invention. In FIG. 4, reference numeral 21 indicates a handset, 22 indicates a microphone which is a transmitting unit provided at one end of one side of the handset 21, and 23 indicates a handset 21.
24 is a speaker that is a receiver provided on the other end of one side of the handset 21; 25 is a press talk button; 26 is a The operation button 27 is a liquid crystal display.

FIG. 5 is a schematic block diagram of the above embodiment. In FIG. 5, 28 is a microphone amplifier connected to the microphone 22, 29 is a microphone amplifier connected to the other microphone 23, and 30 is a speaker amplifier connected to the speaker 24. This speaker amplifier 30 has a switchable sound pressure level. 31 is microphone amplifier 2
8 or 29 and speaker amplifier 3.
This is a changeover switch for changing the sound pressure level to 0.

Next, the operation of the above embodiment will be explained. In the above embodiment, when starting a call, the user first presses the press talk button 25, and then, while looking at the liquid crystal display 27, presses the operation button 26 necessary for transmitting or receiving. When performing private communication, the selector switch 31 is connected to the a side, the microphone 22 is connected to the microphone amplifier 28, and the sound pressure level of the speaker amplifier 30 is lowered, and the speaker 2 of the handset 21 is
4, and bring the mouth close to the microphone 22 to make a call. In addition, you can talk while away from the handset 21,
When multiple people are talking at the same time, connect the selector switch 31 to side b, connect the microphone 23 to the microphone amplifier 29, raise the sound pressure level of the speaker amplifier 30, and move away from the handset 21. Make calls based on your location.

As described above, according to the second embodiment of the invention, when making a private call, the changeover switch 31 lowers the sound pressure level of the speaker 24 of the handset 21, and the speaker 24 is turned on. When talking at a distance from the handset 21 or when talking with multiple people, the sound pressure of the speaker 24 of the handset 21 can be adjusted by using the changeover switch 31. Since the level is set high and calls are made through the microphone 23, there is an advantage that one handset can be used for private and non-private purposes.

Furthermore, according to the above embodiment, since one speaker 24 is shared by both private and non-private use, there is an advantage that the number of parts can be reduced.

In this embodiment as well, the number of parts can be further reduced by using the microphones 22 and 23 in common, as shown in FIG.

Furthermore, in each of the above embodiments, a changeover switch was manually switched on the receiving side to select between private and non-private situations, but communication aimed at simultaneous notification for a large number of people from the beginning In this case, the transmitting side may send a control signal for this purpose, and the receiving side may receive the signal and automatically switch the changeover switch to the speaker side.

[0025]

As described above, according to the first aspect of the present invention, the first transmitting/receiving unit consisting of a transmitter and a receiver is provided on one side of the handset, and the is equipped with a second transmitting/receiving section consisting of a microphone and a speaker,
Since the first transmitting/receiving section and the second transmitting/receiving section are used selectively, there is an effect that one handset can be used for private and non-private situations.

According to the second aspect of the present invention, the handset is provided with one receiving section and one or two transmitting sections capable of switching the sound pressure level, and the sound pressure level of the receiving section can be switched. This has the effect that one handset can be used for private and non-private purposes. Furthermore, since one receiving part is shared between private and non-private cases, the number of parts can be reduced.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view of a transmitting and receiving device showing an embodiment of the first aspect of the present invention.

FIG. 2 is a schematic block diagram of an embodiment of the first invention of the present invention.

FIG. 3 is a partially sectional front view of a transmitting/receiving device showing another embodiment of the first invention of the present invention.

FIG. 4 is a partially sectional front view of a transmitting/receiving device showing an embodiment of the second invention of the present invention.

FIG. 5 is a schematic block diagram of an embodiment of the second invention of the present invention.

[Explanation of symbols]

1. Handset 2 First transmitter/receiver part 3. Transmitter 4　Telephone receiver 5 Second transmitter/receiver part 6. Microphone 7 Speaker 8 Press talk button 9 Operation button 10 Liquid crystal display 11 Transmitter amplifier 12 Handset amplifier 13 Mic amplifier 14 Speaker amplifier 15 Changeover switch 16. Microphone 17 Mouthpiece 21 Handset 22 Microphone 23. Microphone 24 Speaker 25 Press talk button 26 Operation button 27 Liquid crystal display 28 Mic amplifier 29 Mic amplifier 30 Speaker amplifier 31 Changeover switch

Claims (2)

[Claims] 1. A first transmitting/receiving unit having a transmitter and a receiver provided on one side of the handset, and a second transmitting/receiving unit having a microphone and a speaker provided on the other side of the handset. A transmitting/receiving device comprising: a receiving section; and switching means for switching between the first transmitting/receiving section and the second transmitting/receiving section. 2. A transmitting/receiving device comprising one receiver and one or two transmitters provided in a handset and capable of switching the sound pressure level, and means for switching the sound pressure level of the receiver. .