JPH06284082A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To obtain a cordless telephone system capable of being used as a cordless telephone, by connecting to the master cordless telephone set of one's home in the neighborhood of one's home, and performing speech by transceiver between a loadable/unloadable master cordless telephone radio unit and a slave cordless telephone set outside the one's home. CONSTITUTION:This system is equipped with a control unit 21 constituted of a key pad 305, a handset 301, a telephone line interface 302, an audio circuit 303. and a control circuit 304, and a radio unit 22 constituted of a microphone 402, a speaker 401, a voice switch 403, a radio transmission/reception part 404, an antenna 405, and a control circuit 406. The cordless telephone system in which the control unit 201 and the radio unit 22 are constituted loadably/ unloadably can be comprised.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless telephone and the like,
More specifically, the present invention relates to a wireless telephone device that can be used as a cordless telephone by wirelessly connecting to a cordless telephone master unit at home around a home and used as a transceiver when away from home.

[0002]

2. Description of the Related Art In recent years, a cordless telephone using radio has been used instead of a cord between a telephone body and a handset. Conventionally, in a cordless telephone, a base unit is connected to a wired telephone line, and the base unit and the handset communicate with each other wirelessly. The user uses a cordless handset
Around the main unit installed in the home (generally a radius of several hundred meters
Within the range), you can make and receive calls. Calls using cordless telephones use the subscriber's telephone line, so call charges are the same as ordinary wireline charges.

On the other hand, when the cordless telephone slave unit is brought out of the vicinity of the home, the master unit and the slave unit are out of the communication range, so that the call between the master unit and the slave unit cannot be performed. As a supplement to this, a transceiver call using two cordless handsets has been proposed, which is configured as shown in FIG. First, as shown in FIG. 10A, when the cordless telephone slave unit 1 is within the communication range of the master unit 2, it is possible to make or receive a normal call from the slave unit 1. On the other hand, as shown in FIG. 10B, when the child device 1 is out of the communication range of the parent device 2, the transceiver operation can be performed by the two child devices 1a and 1b. However, in this case, the call is between the handset 1a and the handset 1b, and the call to the public line and the call from the public line cannot be made.

[0004]

However, in the above-mentioned conventional cordless telephone device, one cordless telephone master unit and two cordless telephone slave units must be purchased in order to use the transceiver function. Had serious financial problems for the person.

The present invention solves the above-mentioned problems. In the vicinity of a home, a cordless phone can be used as a cordless telephone by wirelessly connecting to a cordless telephone master unit at home. An object of the present invention is to provide a cordless telephone device capable of performing a transceiver call between the two.

[0006]

In order to solve the above-mentioned problems, the present invention provides a keypad means for reading the operation state of a user, a handset means for converting a voice signal and an electric signal,
Telephone line interface means for inputting / outputting electrical signals to / from a telephone line, voice circuit means connected to the telephone line interface means and the handset means, the keypad means, the telephone line interface means, connected to the voice circuit means A control unit configured by a control unit configured as described above, a microphone, a speaker, a voice switch unit connected to the microphone and the speaker, and a voice transmitted from the voice switch unit connected to the voice switch unit to a high frequency signal. The wireless transmission / reception means for outputting and reproducing the received voice signal from the high frequency signal, the antenna connected to the wireless transmission / reception means, and the wireless section including the voice switch means and the control means connected to the wireless transmission / reception means The control unit and the wireless unit are detachable.

[0007]

According to the present invention, in the above-described structure, the cordless telephone base unit wireless unit and the detachable cordless telephone parent unit wireless unit can be used outside the home by wirelessly connecting the cordless telephone master unit to the cordless telephone master unit at home. By making a transceiver call between the devices, it is possible to use it as a transceiver by simply purchasing one cordless telephone master unit and one cordless telephone slave unit.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of an embodiment of a cordless telephone device of the present invention. In FIG.
Is a cordless telephone master unit, and includes a cordless telephone master unit control unit 21 and a cordless telephone master unit wireless unit 22. The control unit 21 includes a handset 301 for converting an electric signal of a voice frequency into an audible signal, a line interface 302 for connecting to a public line, a voice circuit 303 for amplifying a voice signal and switching a route, and a user calls. Keypad 305, line interface 302, voice circuit 30 used for operations such as number input
3. Control circuit 304 for controlling the keypad 305
It is composed of In addition, the wireless unit 22 includes a speaker 401 that converts an electric signal of a sound frequency into an audible signal, a microphone 402 that converts an audible signal into an electric signal of a sound frequency,
A switch 403 that switches the path of the audio signal, a wireless transmission / reception unit 404 that modulates the audio signal and transmits it as a high-frequency signal, and receives the high-frequency signal and reproduces the audio signal, an antenna 405, and a keypad 40 used by the user for operation
7, a switch 403, a wireless transmission / reception unit 404, and a control circuit 406 for controlling the keypad 407.

FIG. 2 is a diagram showing an example of the configuration of a cordless telephone slave unit used together with the cordless telephone master unit of the embodiment of the cordless telephone device of the present invention.
01 is a microphone, 502 is a speaker, 503 is a voice circuit, 504 is a wireless transmission unit, 505 is a wireless reception unit, and 506.
Is an antenna duplexer, 507 is an antenna, 508 is a display, 509 is a keypad, and 510 is a control circuit.

Now, when a call is made to a public line using the cordless telephone master set shown in FIG. 1 and the cordless telephone sub-set shown in FIG. 2, its configuration is as shown in FIG. In FIG. 3, reference numeral 1 is a cordless telephone slave unit, 2 is a cordless telephone master unit including a control unit 21 and a wireless unit 22,
Reference numeral 3 indicates a call range of the cordless telephone base unit 2. The operation of the cordless telephone master unit 2 when a call is made between the cordless telephone slave unit 1 and the master unit 2 as shown in FIG. 3 will be described with reference to FIG.

First, when a call is made between the cordless telephone base unit 2 and a telephone connected to the public line, the handset 301 and the keypad 3 of the control unit 21 are the same as a general wired telephone.
05 is used. Considering the case of making a call as an example, the user picks up the handset 301 of the control unit 21 and inputs the telephone number using the keypad 305 or 407. Then, the line interface 302 goes off-hook under the control of the control circuit 304 to execute the DTMF tone transmission or the pulse dial operation. When the called party answers, the user talks using the handset 301. When an incoming call is received, a ring signal indicating the incoming call is detected at the line interface 302, and when the bell rings, the user picks up the handset 301 from the control unit 21 and talks. In the above case, the voice circuit 303 connects the line interface 302 and the voice path of the handset 301.

Next, the internal operation of the cordless telephone master unit 2 when the cordless telephone subunit 1 makes a call to the public line and when the cordless telephone subunit 1 receives an incoming call from the public line. explain. In this case, the voice transmitted to the telephone line is converted into a high frequency signal in the wireless transmission unit 504 via the microphone 501 and the voice circuit 503 of the cordless telephone slave unit 1 in FIG. Emitted as radio waves. The emitted radio wave is received by the antenna 405 provided in the wireless unit 22 of the cordless telephone base unit 2 shown in FIG. 1 and converted into a voice signal by the wireless transmitting / receiving unit 404. The switch 403 is switched so as to connect the wireless transmission / reception unit 404 and the audio circuit 303 in the control unit 21 shown in FIG. 3, and this transmission audio signal is input to the audio circuit 303 in the control unit 21. Since the voice circuit 303 in the control unit 21 is switched to connect the line interface 302 and the voice path of the switch 403 in the wireless unit 22, the transmission voice signal is transmitted to the voice circuit 30.
It reaches the line interface 302 via 3 and is sent to the telephone line.

On the other hand, the received voice from the telephone line is radiated as a radio wave through the line interface 302, the voice circuit 303, the switch 403, the wireless transmission / reception section 404 and the antenna 405 just like the transmitted voice. The radiated radio wave is received by the antenna 507 in the cordless telephone subunit 1 shown in FIG. 2, and is input to the wireless reception unit 505 via the antenna duplexer 506. Wireless receiver 505
Reproduces the received voice, and the reproduced voice signal is the voice circuit 5
An audio signal is output from the speaker 502 via 03.

FIG. 4 shows a configuration in which two cordless telephone handsets 1 are brought to a place outside the call range apart from the periphery of the cordless telephone handset 2 and a transceiver call is made between the two cordless telephone handsets. Shown in. In FIG. 4, reference numeral 1 is a cordless telephone slave unit, 21 is a cordless telephone master unit control unit, 22 is a cordless telephone master unit wireless unit, and 3 is a cordless telephone wireless unit 22. The operations of the cordless telephone master unit and the cordless telephone slave unit at this time will be described with reference to FIGS. 1 and 2.

As shown in FIG. 4, the voice signal from the cordless telephone subunit 1 making a transceiver call as shown in FIG. 2 is passed through the microphone 501 and the voice circuit 503 of the cordless telephone subunit 1 in the wireless transmission section 504. It is converted to a high frequency signal and passes through the antenna duplexer 506 and the antenna 5
It is radiated as a radio wave from 07. The emitted radio waves are shown in Fig. 1.
The wireless transmission / reception unit 4 receives the signal by the antenna 405 provided in the wireless unit 22 of the cordless telephone base unit 2 shown in FIG.
It is converted into a voice signal by 04. The switch 403 includes a wireless transmission / reception unit 404 and a microphone 402 in the wireless unit,
It has been switched to connect the speaker 401,
This transmitted voice signal is sent to the speaker 40 in the wireless unit 22.
It is output from 1. On the contrary, the voice signal from the microphone 402 of the cordless telephone base unit wireless unit is radiated as a radio wave through the switch 403, the wireless transmission / reception unit 404, and the antenna 405. The radiated radio wave is received by the antenna 507 in the cordless telephone handset 1 shown in FIG. 2, and is input to the wireless reception unit 505 via the antenna duplexer 506. The wireless reception unit 505 reproduces the received voice, The reproduced audio signal is output as an audible signal from the speaker 502 via the audio circuit 503.

In the cordless telephone master unit control unit 21 shown in FIG. 4, the voice circuit 303 has a line interface 3
02 and the voice path of the handset 301 can operate as a general telephone connected to the public line by itself.

As described above, in the cordless telephone base unit 2, when the control unit 21 and the wireless unit 22 are connected,
In the state where the control unit 21 and the wireless unit 22 are separated from each other, the control unit 21 can operate as a wired telephone and the wireless unit 22 can operate as a transceiver as well as the conventional cordless telephone master unit. .

Next, the operation of the control circuit 406 in the wireless unit 22 of the cordless telephone base unit 2 will be described. As shown in FIG. 5, the control circuit 406 is an interface circuit 60 that communicates with the control circuit 304 of the control unit 21.
1, a detection circuit 602 for detecting that the wireless unit 22 is connected to the control unit 21, a microprocessor 603 for executing control by a storage program, a registration (ID) number and a wireless channel table of a cordless telephone handset,
And a memory 604 holding a registration (ID) number of the cordless telephone base unit and a wireless channel table, and an input / output circuit 605 for interfacing with the hardware in the wireless unit 22. When the control unit 21 and the wireless unit 22 are connected, the cordless telephone base unit 2
Operates as a cordless telephone master unit as in the past. At this time, the detection circuit 602 detects the connection with the control unit 21, and the microprocessor 603 communicates with each other.
Registration (ID) of the cordless telephone base unit in the memory 604
Select the number and wireless channel table. Conversely, when the control unit 21 and the wireless unit 22 are separated, the wireless unit 22 operates as a transceiver. At this time, the detection circuit 602 detects separation from the control unit 21, and the microprocessor 603 selects the registration (ID) number and the wireless channel table of the cordless telephone handset in the memory 604 during communication.

Next, the operation of the wireless transmission / reception unit 404 in the wireless unit 22 of the cordless telephone base unit 2 will be described with reference to FIG. FIG. 6 shows a time division multiplexing (TDMA) type digital radio transmission / reception unit, and an example of the data format thereof is shown in FIG. In FIG. 6, reference numeral 701 denotes an encoder for encoding an analog voice signal into a digital signal,
9 is a decoder for decoding a digitally encoded signal into an analog voice signal, which is the reverse of the encoder 701, 713 is a control data processing unit for generating control data to be transmitted and decoding the received control data, and 702 is a code A data multiplexing unit that multiplexes the audio data generated by the device 701 and the control data generated by the control data processing unit 713, and 708 separates the multiplexed received data into control data and audio data, and processes the control data respectively. The data separation unit 703 for outputting to the unit 713 and the decoder 709, the modulation unit 703 for modulating the multiplexed transmission data, the demodulation unit 707 for demodulating the reception data from the received high frequency signal, and 704 the high frequency for the modulated signal. A wireless transmission unit 706 that amplifies and transmits, a wireless reception unit 706 that amplifies the received high frequency signal, frequency-converts it, and outputs it to the demodulation circuit 707. Antenna 405 a switch for time-divisionally connecting the wireless transmission unit 704 and the wireless reception unit 706, 710 a clock generation unit including an oscillation circuit, and 711 a timing reproduction for reproducing a timing signal from the reception data demodulated by the demodulation unit 707. Reference numeral 712 denotes a timing generation unit that generates a transmission / reception timing signal based on either the timing signal from the clock generation unit 710 or the timing signal from the timing reproduction unit. When the control unit 21 and the wireless unit 22 are connected, the cordless telephone master unit 2 operates as a cordless telephone master unit as in the conventional case. At this time, the wireless transmission / reception unit 404 controls the control circuit 406.
The timing generation unit 712 selects the output signal of the clock generation unit 710 as the reference timing, and outputs the output timing signal as the data multiplexing unit 702, the data separation unit 708, and the switch 70.
Supply to 5. On the contrary, when the control unit 21 and the wireless unit 22 are separated, the wireless unit operates as a transceiver. At this time, the wireless transmission / reception unit 404 operates under the control of the control circuit 406 in the master mode if it is the calling side of the transceiver operation and in the slave mode if it receives the call of the transceiver operation. In the case of slave operation, the timing generator 712
Selects the output signal of the timing reproducing unit 711 as the reference timing, and supplies the output timing signal to the data multiplexing unit 702, the data demultiplexing unit 708, and the switch 705.

Next, the operation of the control circuit 304 in the control unit 21 of the cordless telephone base unit 2 will be described.
As shown in FIG. 8, the control circuit 304 is an interface circuit 8 that communicates with the control circuit 406 of the wireless unit 22.
05, a detection circuit 801 for detecting that the wireless unit 22 is connected to the control unit 21, a microprocessor 803 for executing control by a stored program, a memory 802 for holding programs and data, hardware and interface in the control unit 21 Input / output circuit 804. When the control unit 21 and the wireless unit 22 are connected, the cordless telephone base unit 2
Operates as a cordless telephone master unit as in the past. At this time, the detection circuit 801 detects the connection with the control unit, and the microprocessor 803 switches the connection in the voice circuit 303 to the line interface 302 and the switch 403 in the wireless unit 22 during communication. On the other hand, when the control unit 21 and the wireless unit 22 are separated, the control unit operates as a wired telephone. At this time, the detection circuit 801 detects separation from the control unit, and the microprocessor 803 switches the connection in the voice circuit 303 to the line interface 302 and the handset 301.

Another embodiment of the present invention will be described with reference to FIG. In FIG. 9, 1a and 1b are cordless telephone slave units, and 21 is a cordless telephone master unit control unit. The cordless telephone handsets 1a and 1b have the same configuration in principle as the wireless unit 22 of the cordless telephone handset shown in FIG. In the cordless telephone device configured as described above, both cordless telephone handsets 1a and 1b can be operated as cordless telephone handsets by being connected to the cordless telephone handset control unit 21.

[0022]

As is apparent from the above embodiments, according to the present invention, a cordless telephone slave unit can be used as a cordless telephone by wirelessly connecting to a cordless telephone master unit at home in the vicinity of a home, and a detachable cordless telephone outdoors. By making a transceiver call between the wireless unit of the base unit and the cordless handset, the transceiver function can be used just by purchasing one cordless base unit and one cordless handset, which is highly cost effective. It is a thing.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a base unit of a cordless telephone device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of a cordless telephone device slave unit used together with the cordless telephone device master unit of the present invention.

FIG. 3 is a diagram showing a configuration of a cordless telephone device according to an embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a cordless telephone device according to an embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a control circuit in a cordless telephone master unit wireless unit according to an embodiment of the present invention.

FIG. 6 is a block diagram showing the configuration of a wireless transmission / reception unit in a cordless telephone master unit wireless unit according to an embodiment of the present invention.

FIG. 7 is a block diagram showing a data format of a wireless transmission / reception unit in a cordless telephone master unit wireless unit according to an embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a control circuit in a cordless telephone master unit control unit according to an embodiment of the present invention.

FIG. 9 is a diagram showing a configuration of a cordless telephone device according to another embodiment of the present invention.

FIG. 10 is a diagram showing a configuration of a conventional cordless telephone device.

[Explanation of symbols]

 1 cordless telephone slave unit 2 cordless telephone master unit 21 cordless telephone master unit control unit 22 cordless telephone master unit wireless unit 301 handset 302 line interface 303 voice circuit 304 control circuit 305 keypad 401 speaker 402 microphone 403 voice switch 404 wireless transceiver 405 antenna 406 control circuit 407 keypad

Claims (7)

[Claims] 1. A first keypad means for reading an operation state of a user, a handset means for converting a voice signal and an electric signal, a telephone line interface means for inputting and outputting a telephone line and an electric signal, and the telephone line. A control unit comprising interface means and voice circuit means connected to the handset means, the keypad means, the telephone line interface means, and a first control means connected to the voice circuit means; Second keypad means for reading the operation state, a microphone, a speaker, a voice switch means connected to the microphone and the speaker, and a voice transmitted from the voice switch means connected to the voice switch means to a high frequency signal. Wireless transmitting / receiving means for outputting and reproducing received voice signals from high frequency signals, connected to said wireless transmitting / receiving means And a wireless unit configured by a second control unit connected to the wireless transmission / reception unit, the control unit and the wireless unit being detachable. A cordless telephone device characterized in that 2. The second control means is a microprocessor,
Interface means connected to the microprocessor for communicating with the first control means, detection means connected to the microprocessor for detecting attachment / detachment to / from the control unit, master unit registration number and slave unit registration number connected to the microprocessor 2. The cordless telephone device according to claim 1, further comprising a memory for holding a memory and an input / output port connected to the microprocessor. 3. The microprocessor selects a master registration number when the wireless unit is connected to the control unit, and the microprocessor selects a slave registration number when the wireless unit is disconnected from the control unit. The cordless telephone device according to claim 2, wherein: 4. The microprocessor selects the master unit radio channel table as the generation frequency of the radio transmitter / receiver when the radio unit is connected to the control unit, and the microprocessor when the radio unit is disconnected from the control unit. 3. The cordless telephone device according to claim 2, wherein the wireless channel table for the handset is selected as the frequency generated by the wireless transmitting / receiving means. 5. When the wireless unit is connected to the control unit, the audio switch means in the wireless unit connects the wireless transmitting / receiving means in the wireless unit and the audio circuit means in the control unit, and the wireless unit controls the control unit. 2. The cordless telephone according to claim 1, wherein the voice switch means in the wireless unit couples the wireless transmitting / receiving means in the wireless unit with a microphone and a speaker in the wireless unit when disconnected from the unit. apparatus. 6. A wireless unit wireless transmission / reception means, control data generating means, encoding means for encoding transmitted voice, multiplexing means for multiplexing voice data output from the encoding means and control data output from the control data generating means. A modulating means for modulating the output data of the multiplexing means, a transmitting means for high-frequency amplifying the output of the modulating means, an antenna, a receiving means for receiving and amplifying a high-frequency signal, the transmitting means, a receiving means, a high-frequency switch connected to the antenna, Demodulation means for reproducing data from the output of the reception means, separation means for separating voice data and control data from the output of the demodulation means, decoding means connected to the separation means for decoding the voice data into a reception voice signal,
A timing reproducing means connected to the demodulating means for reproducing a timing signal from received data, a clock generating means having an oscillating circuit, the multiplexing means using the timing signal of any one of the timing reproducing means and the clock generating means, and the The timing generating means is configured to supply a timing signal to the demultiplexing means, and when the wireless unit is connected to the control unit, the timing generating means uses the timing signal of the timing regenerating means for the multiplexing means and the demultiplexing means. A timing signal is supplied, and when the wireless unit is not connected to the control unit, the timing generating means uses the timing signal of the clock generating means to supply the timing signal to the multiplexing means and the demultiplexing means. The cordless according to claim 1. Telephone device. 7. The first control means is a microprocessor,
When the wireless unit is connected to the control unit, the audio circuit means in the control unit is connected to the microprocessor, and the audio circuit means is connected to the handset means in the control unit. When the telephone line interface means in the control unit is coupled and the wireless unit is disconnected from the control unit, the audio circuit means in the control unit is in the wireless unit and the telephone line interface means in the control unit. 2. The cordless telephone device according to claim 1, wherein said cordless telephone device is connected to said voice circuit means.