JPH03262239A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To attain talking in hand-free at a free location without a limit of a cord by detecting it that a slave set is placed on an exclusive placing base incorporating a speaker and switching to the speaker of the placing base from a receiver of the slave set. CONSTITUTION:When a cordless slave set A is placed on an exclusive base 8, it is detected by a detection section 20 of the slave set A, a control section 18 changes over a switch 19 to select a speaker 21 of the base B from a receiver 17 of the slave set A. Simultaneously, the control section 18 enhances an amplification factor of a receiver drive section 16 to listen to loudspeaking talking at a location apart slightly and talking is attained without carrying the heavy slave set A in a hand and a limit of a cord.

Description

[Detailed description of the invention] Industrial applications The present invention relates to cordless telephone equipment.

[Prior art] - Dress telephone equipment was created in response to the desire to talk freely anywhere, without being restricted by the location where telephone lines are installed. was released from the constraints of the code. but,
To compensate for this, it had a built-in radio circuit and outgoing dial circuit, making it difficult to make calls without carrying a heavy handset. Furthermore, in reality, when making a call using a cordless telephone device, it has usually been the case that the cordless handset must wait before making a call.

Therefore, in order to be able to make calls without having to carry this handset and with both hands free, a device has been proposed that allows this to be achieved by connecting a headset with a microphone and receiver to this handset. . FIG. 2 is a schematic block diagram of a handset of a cordless telephone device to which the Heradsera I. is connected to realize hands-free calling, and FIG. 3 is a schematic block diagram of a Herad set.

In FIG. 2, a microphone 1 of a handset is normally connected to a microphone amplifier 2, and the audio signal from the microphone 1 is amplified. A modulation and high frequency transmitter 3 is connected to the microphone amplifier 2 to modulate the audio signal, and then transmits it as a radio wave from an antenna 4 connected next. In addition, the antenna 4 receives radio waves from the outside, and after receiving and demodulating the audio signal by the demodulating and receiving unit 5 connected to the antenna 4, the next connected receiver drive unit 6 sends the audio signal, which is usually installed in the handset. The receiver 7 is driven. The control unit 8 is the microphone amplifier 2
, modulation and transmission section 3, demodulation and reception section 5, and drive section 6
etc., and switches between the microphone 1 and receiver 7 on the handset side and the microphone 13 and receiver 14 on the headset side.

This switching is performed by connecting a headset to the connection connector 10.

The headset is connected to the connector 1 as shown in FIG.
0, this plug 11 connects via a cord 12 to its own microphone 13 and receiver 14.
It is connected to the.

Next, the operation of the above conventional example will be explained. In Fig. 2, if the plug 11 of the headset (Fig. 3) is not connected to the connector 10 of the handset, it functions as a handset of a normal cordless telephone device, and calls can be made using the microphone 1 and receiver 7 of the handset. be able to. Next, by inserting and connecting the plug 11 of this headset to the connector 10 of the handset, the switching unit 9 switches the receiver 7 on the handset side to the receiver 14 on the headset side, and the microphone 1 on the handset side to the receiver 14 on the headset side. Each microphone 13 is switched to the Radset side microphone 13, and a call can be made using the headset.

In this way, even in the above-mentioned conventional cordless telephone device, the handset has a built-in microphone and a receiver, and is equipped with a headset that has another microphone and another receiver, and a connection part for connecting this headset, and a connection part for connecting this headset. By providing a switching unit on the handset side that switches from the microphone and receiver on the handset side to the microphone and receiver on the headset side when the phone calls the handset side, it is possible to make a hands-free call.

Problems to be Solved by the Invention However, with the above-mentioned conventional cordless telephone device, in order to connect a cordless headset to the handset so as to avoid having to carry a heavy handset, it is necessary to attach a cord to the cordless telephone device, which is a paradox. become.

The present invention solves these conventional problems, and provides a cordless telephone device that allows users to make calls in any location without being restricted by a cord as in the prior art, without having to carry a heavy handset. With the goal.

Means for Solving the Problems In order to achieve the above object, the present invention includes a cordless handset with a built-in microphone and a receiver, and a dedicated stand for the cordless handset with a built-in speaker. By providing a detection section that detects that a handset is placed, and when this detection is made, a receiver switching section that switches the voice of the other party from the handset's receiver and outputs the voice from the speaker of the dedicated stand, it is possible to simultaneously amplify the sound. This allows you to make phone calls.

Therefore, according to the present invention, when making a call while holding the handset in your hand, you can use it no different from a conventional cordless telephone device, and by placing it on a dedicated stand, you can amplify the sound. Make hands-free calls while hearing the other party's voice (
This allows for simultaneous calls with both hands free, without having to carry a heavy handset or being restricted by the location of the telephone line.

Embodiment FIG. 1 is a schematic block diagram showing an embodiment of the present invention. In the figure, the microphone 11 to the handset is the microphone amplifier 12.
After the audio signal from the microphone 11 is amplified, it is further connected to the modulation and transmission section 13, and the audio signal is modulated and transmitted as a radio wave to the outside from the antenna 14 connected next. Further, the antenna 14 receives external radio waves, which are received as audio signals by the demodulating and receiving section 15 connected next. The received audio signal is normally driven by a receiver 17 on the handset side by a receiver drive unit 16,
Make the sound utter. The control unit 18 controls the microphone amplifier 1
2. Controls the modulation and transmission section 13, demodulation and reception section 15, receiver drive section 16, etc., and receives a signal from the detection section 20, which will be described later. The switching unit 19 performs switching from the receiver 17 to the speaker 21 side, which will be described later. A dedicated stand B is provided separately from the handset A, on which the handset A can be placed, and also has the speaker 21 built-in. Also, note that the handset A is placed on the dedicated stand B.
The detection section 20 detects and outputs a signal to the control section 18.

Next, the operation of the above embodiment will be explained. In the above embodiment, by placing the handset A on the dedicated stand B, the detection unit 2
0 outputs a detection signal to the control section 18. As a result, the control unit 1
8 switches the switching unit 19, and the audio signal output from the receiver drive unit 16 is transferred from the receiver 17 to the dedicated stand B.
The signal is sent to the speaker 21 built into the . Furthermore, the control unit 18 increases the amplification factor of the microphone amplifier 12 so that even the voice spoken from a place where the voice can be heard can be transmitted to the other party.

In this way, according to the above embodiment, the dedicated stand B
The voice of the other party is generated from the speaker 21 of the dedicated stand B. Therefore, without compromising the original feature of the cordless telephone device that calls can be made anywhere, there is no need to hold the heavy handset A, both hands can be used freely, and multiple people can participate in the call. have

It goes without saying that the dedicated stand B on which the handset is placed may double as a charger for the secondary battery built into the handset, be a cordless base unit, or be dedicated to making it hands-free. . If the dedicated stand also serves as a charger for the slave unit, the detection unit 20 can detect the presence or absence of the charging voltage. Furthermore, depending on the acoustic structure, it may be necessary to add a howling prevention circuit.

Effects of the Invention As is clear from the above examples, the present invention has the following effects.

(1) If you have a handset, you can talk anywhere, regardless of where the telephone line is installed.

(2) If necessary, you can make calls without having to carry a heavy handset.

(3) In case of (2), multiple people can participate in the call.

(4) In case of (2), since both hands are free and the user is not restricted by the cord, it is possible to talk while doing other things.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of a cordless telephone device according to an embodiment of the present invention, FIG. 2 is a schematic block diagram of a conventional cordless telephone device, and FIG. 3 is a schematic block diagram of a headset used in a conventional cordless telephone device. It is a block diagram.

Claims (1)

[Claims] A cordless handset with a built-in microphone and a receiver, and a dedicated stand for the cordless handset with a built-in speaker are provided, and the dedicated stand is further provided with a detection unit for detecting that the handset is placed, This cordless telephone device is equipped with a receiver switching unit that switches the voice of the other party from the receiver of the slave unit and generates the voice from the speaker of the dedicated stand when the call is made, thereby making it possible to simultaneously make amplified calls.