JPS63187846A - Radio communication equipment - Google Patents

Abstract

PURPOSE:To realize radio communication by constituting the titled equipment by a portable equipment having a radio transmission section and a fixed station having a loudspeaker means and a radio reception section and switching a received signal so as to be listened to by the loudspeaker means and a transmission signal from the portable equipment to be sent to the telephone line thereby connecting the titled equipment between a conventional telephone set and the telephone line. CONSTITUTION:A telephone line connection terminal 3 and a telephone set 2 are connected by a contact 17a of a switching means 17, an incoming call is informed by the telephone set 2 in the presence of an incoming call. When the user uses a data setting means 24 to send a pilot signal including the 1st data from the portable equipment 19, after the pilot signal is received and demodulated by a radio reception section 10, the result is inputted to a data collation means 15 via a pilot signal detection circuit 14. When it is detected that the 1st data is included, the switch means 17 is operated by a control means 18 to connect the telephone line connection terminal 3 and a 2/4-wire conversion circuit 6, a reception signal is outputted from a loudspeaker means 7 and a transmission signal from the portable equipment is sent to a telephone line. When the pilot signal including the 2nd data is sent by a data setting means 25 from the portable equipment 19, the switching means 17 is operated by the control means 18 to disconnect the connection between the telephone line connection terminal 3 and the converting circuit 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a wireless communication device that includes a small and lightweight portable device that is connected to a telephone and a fixed station that has a speaker.

[Prior Art] A conventional wireless telephone device realizes a telephone call by transmitting and receiving data between a fixed station and a mobile device, and also includes a dial, a wireless transmitting/receiving unit, and a transmitter in the mobile device.

It had a built-in receiver, battery, etc.

[Problem that the invention seeks to solve]

In the conventional radio telephone device as described above, the portable device is large and heavy, so it is practically difficult to carry the device at all times. Therefore, it was common for the device to be placed in a suitable location in the home, and the user would go to that location to use it.

In addition, wireless transmitting and receiving circuits are required for both the fixed station and the mobile device, making them expensive. In addition, the mobile device must be held in hand to make calls, making it difficult to make hands-free calls. The problem was that there was no.

This invention was made to solve these problems, and it makes the mobile device extremely small and lightweight so that it can respond to incoming calls wherever it is at the time, and is inexpensive and hands-free. An object of the present invention is to obtain a wireless communication device that enables telephone calls.

[Means for Solving the Problems] A wireless communication device according to a first aspect of the present invention includes a microphone, a pilot signal generator that generates a pilot signal containing first data and a pilot signal containing second data. It consists of a circuit, a data setting means for setting data included in a pilot signal generated by this pilot signal generation circuit, a wireless transmitter for transmitting a pilot signal and an audio signal input from a microphone, and a power supply. a mobile device, a wireless reception unit that receives radio waves transmitted from the mobile device, a telephone line connection terminal to which a telephone line is connected, a loudspeaker that amplifies the signal received from the telephone line, and the loudspeaker. A wireless receiving unit is connected to the terminal, and a connection terminal is connected to a telephone line connection terminal, and the transmitting signal from the mobile device and the receiving signal from the telephone line are separated and mixed.
a line/4-wire conversion circuit, a pilot signal detection circuit for detecting the pilot signal demodulated by the radio receiving section, a data matching means for matching data included in the pilot signal detected by the pilot signal detection circuit, and an external a telephone connection terminal to which a telephone is connected; a loop detection means for detecting a direct current flowing between a telephone line connected to the telephone line connection terminal and a telephone connected to the telephone connection terminal;
The first data is included in the pilot signal by the switching means for switching between short-circuiting both ends of the loop detection means or connecting between the telephone line connection terminal and the connection terminal of the 2-wire/4-wire conversion circuit, and the data matching means. When it is detected that the telephone line connection terminal and 2/4
When the second data is detected in the pilot signal and the telephone line and 2/4 line are connected to the connection terminal of the line conversion circuit.
A fixed station consisting of a control means that restores the switching means and short-circuits both ends of the loop detection means when a direct current is detected by the loop detection means with the line conversion circuit connected. be.

Further, the wireless communication device according to the second aspect of the present invention includes a microphone, a pilot signal including the first data, and a second pilot signal including the first data.
a pilot signal generation circuit that generates a pilot signal containing data; a data setting means that sets data included in the pilot signal generated by the pilot signal generation circuit; A portable device comprising a wireless transmitter for transmitting data, a power supply, a wireless receiver for receiving radio waves transmitted from the portable device, a telephone line connection terminal to which a telephone line is connected, and amplification for amplifying audio signals. A sound amplification means, a connection terminal to which the sound amplification means is connected to the wireless reception section and a connection terminal connected to a telephone line connection terminal, and a transmission signal from the portable device;
A 2-wire/4-wire conversion circuit that separates and mixes the received signal from the telephone line, a pilot signal detection circuit that detects the pilot signal demodulated by the radio receiver, and a pilot signal detected by the pilot signal detection circuit. A data collation means for collating included data, a telephone connection terminal to which an external telephone is connected, a telephone line connected to the telephone line connection terminal, and a telephone connected to the telephone connection terminal. Short-circuit the loop detection means to be detected and both ends of the loop detection means or connect the telephone line connection terminal and the two-wire/
A switching means for switching between connection terminals of the 4-wire conversion circuit and switching between inputting an incoming call signal from a telephone line to the amplification means or inputting an audio signal from an external sound source device, and data verification. When it is detected by the means that the first data is included in the pilot signal 1, the switching means is operated to connect the telephone line connection terminal and the 2/4 line.
At the same time as connecting the connection terminal of the line conversion circuit, the receiving signal from the telephone line is input to the amplification means, and when the second data is detected in the pilot signal,
A fixed station consisting of a control means that restores the switching means and short-circuits both ends of the detection means when a DC current is detected by the loop detection means with the four-wire conversion circuit connected. .

[Effect]

In the first aspect of the present invention, the telephone line connection terminal is connected to the telephone line, and the telephone connection terminal is connected to the telephone set, and when an incoming call is received, the incoming call is notified by the telephone set, and the user sets the data setting means from the mobile device. When a pilot signal containing data 1 is transmitted, this pilot signal is received and demodulated by a radio receiving section, and then inputted to a data matching means via a pilot signal detection circuit to perform data matching. When it is detected that the first data is included, the switching means is operated by the control means, the telephone line connection terminal and the connection terminal of the 2-wire/4-wire conversion circuit are connected, and the amplification means The incoming call signal is amplified, and the outgoing call signal from the mobile device is transmitted to the telephone line. Also, after this, when the handset of the τ phone is off-hook, the DC current is detected by the loop detection means, the switching means is operated by the control means, and both ends of the loop detection means are short-circuited, making it possible to talk using the handset. Become. Also, when a pilot signal containing second data is sent from the portable device, the control means operates the switching means to disconnect the telephone line connection terminal and the 2-wire/4-wire conversion circuit.

In the second aspect of the present invention, the telephone line connection terminal is connected to the telephone line and the telephone connection terminal is connected to the telephone set, and when an incoming call is received, the incoming call is notified by the telephone set, and the user can set the data setting means from the mobile device. When a pilot signal containing data 1 is transmitted, this pilot signal is received and demodulated by a radio receiving section, and then inputted to a data matching means via a pilot signal detection circuit to perform data matching. When it is detected that the first data is included, the switching means is operated by the control means, and the telephone line connection terminal and the connection terminal of the 2-wire/4-wire conversion circuit are connected, and A reception signal from the telephone line is input to the amplification means, the reception signal is amplified by the amplification means, and a transmission signal from the portable device is transmitted to the telephone line. Further, after this, when the handset of the telephone is off-hook, the loop detection means detects the direct current, the switching means is operated by the control means, and both ends of the loop detection means are short-circuited, allowing the handset to talk. . Also,
When the pilot signal containing the second data is sent from the portable device, the control means operates the switching means to disconnect the telephone line connection terminal and the 2-wire/4-wire conversion circuit, and also disconnects the telephone line connection terminal from the 2-wire/4-wire conversion circuit. An audio signal from an external sound source device is now input.

(Embodiment) FIGS. 1 and 2 are block diagrams of an embodiment of the wireless communication device of the present invention, in which FIG. 1 shows a fixed station and FIG. 2 shows a portable device.

In these figures, 1 is a fixed station, 2 is a telephone, 3 is a telephone line connection terminal to which a telephone line is connected, 4 is a telephone connection terminal to which the telephone 2 is connected, 5 is a rectifying diode bridge, and 6 is a 2 Line/4-wire conversion circuit, 6a above 2-wire/4
The reception signal output terminal of the line conversion circuit 6, 6b, is the 2-wire/4
The transmission signal output terminal of the line conversion circuit 6, 6C, is the 2-wire/4
A connection terminal of the line conversion circuit 6 is connected to the telephone line connection terminal 3. Reference numeral 7 denotes amplification means for the reception signal, 8 a speaker amplification circuit, 9 a speaker, 10 a radio reception section, 11 a reception antenna, 12 a reception circuit consisting of a high frequency amplification circuit and a demodulation circuit, 13 the reception circuit 12 and the This is a buffer circuit between the transmission signal input terminals 6b of the 2-wire/4-wire conversion circuit 6, and has bandpass filter characteristics that allow signals in the audio frequency band to pass. 14 is a pilot signal detection circuit, 15 is a data collation means, 16 is a loop detection means for detecting the direct current flowing between the telephone line connection terminal 3 and the telephone connection terminal 4, 17 is a switching means, and 17a is the switching means 17. 18 is a control means, 19 is a portable device, 2o is a microphone,
21 is a pilot signal generation circuit, 22 is a first and second
23 is an oscillation circuit that generates the fundamental frequency of the pilot signal, 24 is a first data setting means, 25 is a second data setting means, 26 is a wireless transmitter, and 27 is a wireless transmitter. In the circuit, the pilot signal,
It is composed of a modulation circuit and a high frequency amplification circuit for the audio signal input from the microphone 2o. 28 is a transmitting antenna, 2
9 is a battery.

Next, the operation will be explained.

When the wireless communication device of the present invention is not in use, the contact 17a of the switching means 17 is closed to the side b in the figure. That is, the telephone line connection terminal 3 and the telephone connection terminal 4 are connected by the contact 17a of the switching means 17, and the telephone 2 can be used without affecting the characteristics of the telephone 2 in any way. When there is an incoming call, the ringing signal sent through the telephone line is sent to the telephone line terminal 3. The signal is sent to the telephone 2 via the contact 17a and the telephone connection terminal 4, and the bell or tolling ring in the telephone 2 is rung to notify that the call is incoming.

At this time, when the user presses the first data setting means 24 of the portable device 19 shown in FIG. 2, a pilot signal containing the first data is sent into space via the wireless transmitter 26. . This pilot signal is received and demodulated by the radio receiving section 1o of the fixed station 1. A pilot signal detection circuit 14 configured to synchronize with the pilot signal
inputs the data information contained in the pilot signal to the data matching means 15. This data information is collated by the data collation means 15 and confirmed to be the first data, so the control means 18 operates the switching means 17 to close the contact 17a to the side a, connecting the telephone line and the two wires. / A DC loop is connected between the 4-wire conversion circuit 6 and the 4-wire conversion circuit 6.

Through these operations, the receiving signal sent from the calling side is received by the speaker 9 of the amplification means 7, and the sending signal input from the microphone 20 of the portable device 19 is demodulated by the radio receiving section 10 and sent to the buffer circuit 13. The signal is inputted to the transmission signal input terminal 16b of the 2-wire/4-wire conversion circuit 6 via the 2-wire/4-wire conversion circuit 6, and sent to the telephone line side.

After that, a pilot signal that does not include the first data and the second data is continuously sent out, but the frequency of the pilot signal is set to a frequency outside the audio frequency band (for example, 4 kHz or higher), and the buffer circuit 13 By having a bandpass filter characteristic that passes signals in the frequency band, the pilot signal and the transmitting signal can be separated.
Only the transmit signal can be input to the 2-wire/4-wire conversion circuit 6.

In order to recover from and end the conversation between the speaker 9 and the portable device 19, it is sufficient to press the second data setting means 25 of the portable device 19, and by this operation, the pilot data including the second data is A signal is sent into space via a wireless transmitter. The pilot signal is received and demodulated by the radio receiving section 10 of the fixed station 1, and the data information contained in the pilot signal is detected by the data collation means 15 by the pilot signal detection circuit 14 configured to tune with the pilot signal. is input. This data information is collated by the data collation means 15 and confirmed to be the second data, so the control means 18 operates the switching means 17 to close the contact 17a to the b side and release the DC loop. .

On the other hand, in order to switch from a conversation state using the speaker 9 and the portable device 19 to a conversation using the telephone set 2, it is sufficient to take the telephone set 2 off-hook. That is, when the telephone 2 is taken off-hook, the DC current supplied from the station passes through the loop detection means 16.
into the phone through. When the loop detection means 16 notifies the control means 1 that DC current is flowing, the control means 18 operates the switching means 17 to close its contact 17a to the b side. This operation disconnects the 2-wire/4-wire conversion circuit 6, and all direct current supplied from the station is transferred to the telephone 2.
is supplied to the telephone 2, and normal telephone calls can be made using the telephone set 2.

.

Next, detection of the DC loop will be explained.

FIG. 3 is a block diagram of one embodiment of the loop 9 detection means 16.

In this figure, the same symbols as in Fig. 1 indicate the same parts,
3a and 3b are telephone line connection terminals; 4a;

4b is a telephone connection terminal, PDI and PD2 are light emitting diodes, PTI and PT2 are light receiving transistors, and the light emitting diode PDI and the light receiving transistor PT1, and the light emitting diode PD2 and the light receiving transistor PT2 constitute a photocoupler. R is a resistive element, + is a power supply terminal, and G1 is a gate circuit with a waveform shaping function.

Here, the reason why the light emitting diodes PDI and PD2 are connected in parallel in opposite directions is to enable one of them to operate regardless of the polarity of the direct current supplied to the telephone line.

As described above, in the standby state, the contact 17a of the switching means 17 is closed to the side b. In this state, even if the telephone 2 goes off-hook, the contact 17a of the switching means 17 does not operate.
The direct current sent through the telephone line is transferred to an external source such as, for example, from the telephone line connection terminal 3a to the telephone connection terminal 4a to the telephone 2 to the telephone connection terminal 4b = the contact 17a of the switching means 17 to the telephone line connection terminal 3b. The current flows according to the DC characteristics of the telephone 2 connected to the telephone 2.

In the standby state, when an incoming call is received and the portable device 19 answers, the switching means 17 operates as described above, its contact 17a closes to side a (telephone 2 is in the on-footer state), and the speaker 9 of the amplification means 7 is activated. You can talk to the person using the mobile device 19. When the telephone 2 is taken off-hook from this state, direct current begins to flow through the telephone 2 via the light emitting diode PDI or PD2. This direct current turns on either photocoupled photodetector transistor PTI or PT2, and on information is transmitted to the control means 18 through the gate circuit G1. Then, the control means 18 restores the switching means 17, closes its contact 17a to the b side, and switches the light emitting diode PDI.

Short-circuit PD2 so that all the DC current supplied to phone 2
Make it flow.

With such a configuration, the performance of the external telephone 2 will not be affected even if the wireless communication device of the present invention is connected.

FIG. 4 is a block diagram of another embodiment of the fixed station according to the second aspect of the present invention.

In this figure, the same symbols as in Fig. 1 indicate the same parts,
9a is an external speaker for configuring amplification means, 17
b is a contact point of the switching means 17, which switches the output of the speaker amplifier circuit 8 and the output of the external sound source device 30 and inputs it to the speaker 9.

The basic operation is almost the same as that of the above embodiment, but in this embodiment, the telephone is in the standby state, and the contact 17b is in the a
Radio because it is closed to the side.

By operating an external sound source device 30 such as a stereo, music etc. can be heard from the external speaker 9a.

Then, the external sound source device 3o is operated. Regardless of whether there is a call or not, when there is an incoming call, the incoming call notification means (not shown) in the telephone 2 operates, so if the first data setting means 24 of the mobile device 19 is pressed, the above-mentioned operation can be performed in the same way. A 2-wire/4-wire conversion circuit 6 is connected to the telephone line. At the same time, the contact 17b of the switching means 17 also operates and closes to the b side to input the reception signal to the speaker 9a. That is, even if you have been listening to music etc. from the external sound source device 30, you can now automatically listen to the reception signal from the speaker 9a.

Therefore, with such a configuration, the speaker for listening to radio, stereo, etc. can also be used for listening to telephone reception signals. Furthermore, the location where the speaker is installed can be appropriately selected, improving economical efficiency and freedom of installation.

In the above embodiment, an example was shown in which the data setting means was composed of two buttons, but it is composed of one button, and when the first press is pressed, the first data is set, and when the second press is pressed, the second data is set. ,
It may be configured such that the first data and the second data can be sent out alternately, such as when the third press is pressed, the first data is sent.

〔Effect of the invention〕

As explained above, the first invention of the present invention includes a microphone, a pilot signal generating circuit that generates a pilot signal containing first data and a pilot signal containing second data, and a pilot signal generating circuit that generates a pilot signal containing first data and a pilot signal containing second data. A portable device comprising: a data setting means for setting data included in a pilot signal; a wireless transmitter for transmitting the pilot signal and an audio signal input from a microphone; and a power source; a wireless receiving section that receives radio waves; a telephone line connection terminal to which a telephone line is connected;
Amplifying means for amplifying received signals from a telephone line, a connecting terminal to which the amplifying means is connected to a wireless receiving section and a telephone line connecting terminal, and a transmitting signal from a mobile device and a wireless receiving section are connected to each other. a 2-wire/4-wire conversion circuit that separates and mixes the received signal from the radio receiver, a pilot signal detection circuit that detects the pilot signal demodulated by the radio receiver, and a pilot signal included in the pilot signal detected by the pilot signal detection circuit. Detecting direct current flowing between a data matching means for comparing data, a telephone connection terminal to which an external telephone is connected, a telephone line connected to the telephone line connection terminal, and a telephone connected to the telephone connection terminal. A loop detecting means, a switching means for switching between short-circuiting both ends of the loop detecting means or connecting between the telephone line connection terminal and the connection terminal of the 2-wire/4-wire conversion circuit, and a data matching means to detect a signal in the pilot signal. When it is detected that the first data is included, the switching means is operated to connect the telephone line connection terminal and the connection terminal of the 2-wire/4-wire conversion circuit, and the second data is detected in the pilot signal. control means for restoring the switching means and short-circuiting both ends of the loop detection means when the loop detection means detects a direct current when the telephone line and the two-wire/four-wire conversion circuit are connected; Since it consists of a fixed station, it is possible to connect a general telephone to a telephone line without affecting the performance of the telephone, and easily realize wireless calls.
The effect is that you can respond and talk hands-free from where you were at that time, and you can continue talking while continuing your previous work.

Further, as explained above, the second invention of the present invention includes a microphone, a pilot signal including the first data, and a second pilot signal including the first data.
a pilot signal generation circuit that generates a pilot signal containing data; a data setting means that sets data included in the pilot signal generated by the pilot signal generation circuit; A portable device comprising a wireless transmitter for transmitting data, a power supply, a wireless receiver for receiving radio waves transmitted from the portable device, a telephone line connection terminal to which a telephone line is connected, and amplification for amplifying audio signals. A sound amplification means, a connection terminal to which the sound amplification means is connected to the wireless reception section and a connection terminal connected to a telephone line connection terminal, and a transmission signal from the portable device;
A 2-wire/4-wire conversion circuit that separates and mixes the received signal from the telephone line, a pilot signal detection circuit that detects the pilot signal demodulated by the radio receiver, and a pilot signal detected by the pilot signal detection circuit. A data collation means for collating included data, a telephone connection terminal to which an external telephone is connected, a telephone line connected to the telephone line connection terminal, and a telephone connected to the telephone connection terminal. Detect? - Switching between short-circuiting both ends of the loop detection means and the loop detection means or connecting between the telephone line connection terminal and the connection terminal of the 2-wire/4-wire conversion circuit, and transmitting an incoming call signal from the telephone line to the amplification means. a switching means for switching whether to input the input signal or an audio signal from an external sound source device; and a switching means for operating the switching means when it is detected by the data matching means that the first data is included in the pilot signal. Telephone line connection terminal and 2 wire/4
At the same time as connecting the connection terminal of the line conversion circuit, the receiving signal from the telephone line is input to the amplification means, and when the second data is detected in the pilot signal,
The fixed station consists of a fixed station and a control means that restores the switching means and short-circuits both ends of the detection means when a DC current is detected by the loop detection means with the 4-wire conversion circuit connected. Part or all of the means can be made up of an external sound source device, and in addition to the effects of the first invention, there is an effect that it can be constructed at low cost and the degree of freedom in installation is improved.

[Brief explanation of the drawing]

1 and 2 are block diagrams of an embodiment of the wireless communication device according to the first aspect of the present invention, FIG. 3 is a block diagram of an embodiment of the loop detection means, and FIG. FIG. 2 is a configuration diagram of an embodiment of the fixing machine according to the second invention. In the figure, 1 is a fixed station, 2 is a telephone, and 3, 3a.

Claims (2)

[Claims] (1) Setting a microphone, a pilot signal generation circuit that generates a pilot signal containing first data and a pilot signal containing second data, and data included in the pilot signal generated by this pilot signal generation circuit. a wireless transmitter that transmits a pilot signal and an audio signal input from the microphone; a power source; and a wireless receiver that receives radio waves transmitted from the mobile device. , a telephone line connection terminal to which a telephone line is connected; amplification means for amplifying the reception signal from the telephone line; and the amplification means and the radio receiving section are connected and also connected to the telephone line connection terminal. a 2-wire/4-wire conversion circuit that includes a connection terminal and separates and mixes the transmit signal from the portable device and the receive signal from the telephone line; and a pilot that detects the pilot signal demodulated by the radio receiver. a signal detection circuit; a data matching means for matching data included in a pilot signal detected by the pilot signal detection circuit; a telephone connection terminal to which an external telephone is connected; and a telephone connection terminal connected to the telephone line connection terminal. a loop detection means for detecting a direct current flowing between a telephone line and the telephone connected to the telephone connection terminal; and a loop detection means for detecting a direct current flowing between the telephone line and the telephone connected to the telephone connection terminal; a switching means for switching between the connection terminals of the conversion circuit; and a switching means for operating the switching means when it is detected by the data matching means that the first data is included in the pilot signal. A telephone line connection terminal and the connection terminal of the 2-wire/4-wire conversion circuit are connected, and the second
when the data of the telephone line and 2/4 are detected.
a fixed station comprising a control means for restoring the switching means and short-circuiting both ends of the loop detection means when a direct current is detected by the loop detection means with the line conversion circuit connected; A wireless communication device characterized by: (2) Setting a microphone, a pilot signal generation circuit that generates a pilot signal containing first data and a pilot signal containing second data, and data included in the pilot signal generated by this pilot signal generation circuit. a wireless transmitter that transmits a pilot signal and an audio signal input from the microphone; a power source; and a wireless receiver that receives radio waves transmitted from the mobile device. , comprising a telephone line connection terminal to which a telephone line is connected, amplification means for amplifying the audio signal, a connection terminal to which the amplification means is connected to the wireless reception section and to the telephone line connection terminal, a 2-wire/4-wire conversion circuit that separates and mixes a transmission signal from the portable device and a reception signal from the telephone line; a pilot signal detection circuit that detects a pilot signal demodulated by the radio reception section; a data collation means for collating data included in the pilot signal detected by the pilot signal detection circuit; a telephone connection terminal to which an external telephone is connected; and the telephone line and the telephone connected to the telephone line connection terminal. a loop detection means for detecting a direct current flowing between the telephone set connected to the connection terminal; and the connection between the telephone line connection terminal and the 2-wire/4-wire conversion circuit by short-circuiting both ends of the loop detection means; a switching means for switching whether to connect between the terminals and inputting an incoming call signal from the telephone line to the amplification means or an audio signal from an external sound source device; When it is detected that the first data is included in the signal, the switching means is operated to connect the telephone line connection terminal and the connection terminal of the 2-wire/4-wire conversion circuit; A reception signal from the telephone line is input to the loudspeaker means, and the loop is detected when the second data is detected in the pilot signal and when the telephone line and the 2-wire/4-wire conversion circuit are connected. 1. A wireless communication device comprising: a fixed station; and a control means for restoring the switching means and short-circuiting both ends of the detection means when a direct current is detected by the means.