JPH06260992A - Digital radio telephone device - Google Patents

Abstract

PURPOSE:To perform simultaneous call of plural radio telephone slave devices by voice from a radio telephone device master device, in a radio telephone device constituted of the radio telephone master device connected with a public line, and the plural radio telephone slave devices capable of performing TDMA/ TDD radio communication with the radio telephone master device. CONSTITUTION:The radio telephone master device is equipped with a simultaneous voice call management table 39 which stores the slot number of a communications channel to be used at the time of the simultaneous voice call, and a control part 40 which controls the entire master device is equipped with a simultaneous voice call instructing means 41 which forms a simultaneous voice call instruction signal, and requests transmission to the entire slave devices. Moreover, a control part 44 of the radio telephone slave device is equipped with a simultaneous voice call detecting and responding means 45 which detects the simultaneous voice call signal from the master device, and automatically responds to it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital wireless telephone device, and more particularly to a digital cordless telephone device capable of performing TDMA / TDD wireless communication with a plurality of cordless slaves.

[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.

A conventional digital cordless telephone device will be described below with reference to the drawings. FIG. 5 is a block diagram showing a configuration of a conventional digital cordless telephone device master unit, FIG. 6 is a block diagram showing a configuration of a conventional digital cordless telephone device slave unit, and FIG. 7 is a general call in a conventional digital cordless telephone device. It is a procedure.

In FIG. 5, reference numeral 1 is a cordless telephone device master unit. In the base unit 1, 2 is a microphone, 3 is a speaker, 4 is a key input unit, 5 is an antenna, 6 is a receiving unit which receives a high frequency signal from the wireless telephone device slave unit and reproduces a digital signal,
Reference numeral 7 is a transmitter that modulates a digital signal and transmits it as a high-frequency signal to the wireless telephone device slave unit, 8 is a voice encoding unit that digitizes a plurality of voice signals including signals from a public line, and 9 is a voice encoding unit 8 A multiplexing unit 10 that time-division-multiplexes a plurality of digital signals output from the same into a same digital signal and sends the same to a transmitting unit 7 is a time-division-multiplexed digital signal from a receiving unit 6 that is a plurality of individual digital signals. A demultiplexing unit for demultiplexing into 11, a voice decoding unit for converting a plurality of digital signals output from the demultiplexing unit 10 into analog and converting into a voice signal, and a line interface 12 connected to a public line and closing the line The unit 13 outputs the input from the voice decoding unit 11 for each slot, the input from the line interface unit 12 and the input from the microphone 2 to the voice encoding unit 8 for each slot. And line interface unit 12
To the speaker 3 and a slot signal connection unit for connecting to the speaker 3, 14 is a control unit for controlling the entire apparatus, 15 is a paging instruction means for forming a paging instruction signal and requesting transmission to the child device, 16 is a child device A call response detecting means 17 for detecting a call response signal from the mobile station, 17 forms a communication channel instruction signal and requests transmission to the slave unit, and thereafter issues a frequency setting instruction to the transmitting section 7 and the receiving section 6 and a slot signal connecting section. Reference numeral 13 is a communication channel instruction means for instructing connection of a voice signal, and reference numeral 18 is an idle channel determination means for determining an idle channel (frequency and slot) for a call.

In FIG. 6, in the cordless telephone device slave unit 23, 23 is a microphone, 24 is a speaker, 25 is a key input section, 26 is an antenna, and 27 is a digital signal that receives a high frequency signal from the wireless telephone device master unit. A receiving unit for reproducing a signal, 28 a transmitting unit for modulating a digital signal and transmitting it as a high frequency signal to the base unit of the wireless telephone device, 29 a voice encoding unit for digitizing a voice signal, and 30 a voice encoding unit 29. A multiplexer for time-division-multiplexing the digital signal output from the demultiplexer, 31 a demultiplexer for demultiplexing the time-division-multiplexed digital signal, 32 an analog digital signal output from the demultiplexer The voice decoding unit 33 converts the input for each slot from the voice decoding unit 32 and the input from the microphone 23 to the voice encoding unit 24 for each slot. Slot signal connection portion connected to the fine speaker 24, 34 control unit that controls the entire apparatus, 35
Is a paging detection response means for detecting a paging instruction signal from the master unit, 36 is a paging response unit for forming a response signal to the paging and making a transmission request, and 37 is a communication channel indication signal from the parent device and is transmitted It is a communication channel instructing means for instructing the unit 28 and the receiving unit 27 to set a frequency and for instructing the slot signal connecting unit 33 to connect a voice signal.

The operation of the conventional digital cordless telephone device configured as described above will be described below.
First, TDMA / TDD communication performed between cordless parents and children will be described with reference to FIG.

As shown in FIG. 8, the cordless master unit has one section (slot: upstream slot and downstream slot are synchronized with respect to one cordless slave unit, which is uniformly divided in time on the same frequency. ) To send and receive data. For example, when slot 1 is used for communication between the cordless base unit and one cordless handset, the cordless base unit transmits data at Tx1 in the downlink transmission slot and receives data at Rx1 in the downlink reception slot. .
On the other hand, on the cordless handset side, T in the uplink transmission slot
Data is transmitted at x1, and data is received at Rx1 in the uplink reception slot. Further, although control data is exchanged during a call, voice data and control data can be exchanged at the same time during a call.

Referring now to FIG. 5, when the user of the cordless base unit 1 performs a paging operation using the key input unit 4, the control unit 14 determines whether paging is activated and the paging instruction means 15 is provided.
Request to send a general call instruction signal. Upon receiving the request for transmission of the general call instruction signal, the general call instruction means 15 forms a data string of the general call signal and requests the transmitter 7 for transmission.
Upon receiving the transmission request, the transmission unit 7 modulates the data string output by the general call instructing means 15 and transmits the data to the slave unit A1 via the antenna 5.
9, transmission of the general call instruction signal to the slave units B20 and C21 is started.

On the other hand, in FIG. 6, the cordless slave unit 22
On the side, the signal from the cordless base unit 1 is received by the antenna 26, the receiving unit 27 demodulates it into a data string, and the control unit 34 determines the signal. In this case, the paging detection means 35 detects the reception of the paging instruction signal and activates the ringing tone. At this time, the ringing tone starts to sound in all of the slave units A19, B20, and C21.

Next, when the user of the slave unit A19 responds to the general call (for example, by pressing the extension key), the control unit 34 determines the response of the general call and requests the call response means 36 to transmit the call response signal. Stops ringing with. Upon receipt of the call response signal transmission request, the call response means 36 forms a data sequence of the call response signal and requests the transmission unit 28 to transmit. Upon receiving the transmission request, the transmission unit 28 calls the call response means 36.
The data string output by the base station 1 is modulated and the base unit 1 is transmitted via the antenna 26.
A call response signal is transmitted to.

Next, in FIG. 5, on the cordless master unit 1 side, the signal from the cordless slave unit 22 is received by the antenna 5, the receiving unit 6 demodulates it into a data string, and the control unit 14 judges the signal. In this case, the call response detection means 16 detects the reception of the call response signal, and notifies the simultaneous call instruction means 15 and the communication channel instruction means 17 to that effect. The paging instructing means 15 which has confirmed the paging response sends a paging calling stop instruction signal to all the slaves in the same manner as the paging calling instruction signal.
Further, the communication channel instructing means 17 recognizing the call response requests the idle channel determining means 18 to determine the communication channel to be used for the call with the handset A19 which has responded.

Next, on the side of the cordless cordless handset 22, the paging detection means 35 is used in the same manner as when the paging instruction signal is received.
Receives the simultaneous call stop instruction signal, the control units 34 of the handset B20 and handset C21 that did not answer the call stop the ringing tone.

Next, when an empty channel is determined on the cordless base unit 1 side, the empty channel (assuming frequency A and slot 1) determined by the communication channel instructing means 17 is used as a communication channel with the handset A. A data string of the channel instruction signal is formed and a transmission request is made to the transmission unit 7. After that, the frequency setting of transmission / reception is instructed to the transmission unit 7 and the reception unit 6, so that the slot signal connection unit 13 connects the audio signal from the microphone to the transmission output of the slot 1 and the reception input of the slot 1 to the speaker. Give instructions.

Next, when the communication channel instruction detecting means 37 receives the communication channel instruction signal on the cordless handset 22 side in the same manner as when receiving the paging signal, the frequency setting is transmitted according to the instruction of the received signal. Unit 28, receiving unit 27
And slot signal connection (same as the base unit)
To the slot signal connection unit 33. With the above procedure, a call between the master unit and the slave unit A becomes possible, and a voice call can be made from the master unit to the slave unit A.

Here, the flow of a voice signal at the time of voice call is shown below. In FIG. 5, the voice signal of the base unit 1 enters from the microphone 2, is connected to the slot 1 transmission output by the slot signal connection unit 13, is digitized by the voice encoding unit 8, and is time division multiplexed by the multiplexing unit 9. Then, the signal is modulated into a high frequency signal by the transmitter 7 and transmitted to the slave unit A 19 via the antenna 5.
On the other hand, on the side of the slave unit A19, in FIG. 6, the high frequency signal transmitted from the master unit 1 is received by the receiving unit 27 via the antenna 26, the digital signal is reproduced, and the signal of the slot 1 is separated by the demultiplexing unit 31. Then, in the voice decoding unit 32, slot 1
Of the digital signal is converted into an audio signal, the slot signal connection unit 33 connects the received audio signal of the slot 1 to the speaker 24, and the calling voice input from the speaker 24 through the microphone of the master unit 1 is reproduced. Similarly, child device A19
The voice input from the microphone 23 of
It is also possible to play with.

[0016]

However, in the above-mentioned conventional digital cordless telephone device, there is a problem that the simultaneous ringing by the ringing tone and the voice calling to the responding handset can be made, but the simultaneous ringing by the voice cannot be made. Had.

An object of the present invention is to solve the above problems and to provide a digital cordless telephone device capable of simultaneous call by voice.

[0018]

In order to achieve the above-mentioned object, the present invention controls a voice paging management table for storing a slot number of a communication channel used for paging a voice in a master unit, and a master unit as a whole. The control unit is provided with a voice paging instruction means for forming a voice paging instruction signal and requesting transmission to the child device. Furthermore, the control unit of the handset unit automatically detects and responds to the voice paging signal from the parent device. It is provided with a voice paging response means.

[0019]

According to the present invention, with the above-described configuration, simultaneous voice calls can be made. Therefore, even if the user of the child device does not perform a response operation, the message from the parent device is transmitted to the child device, and further, the All the messages from the master unit can be transmitted to the slave unit with a single operation.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a block diagram showing a configuration of a cordless telephone device master unit of the present invention, and FIG. 2 is a block diagram showing a configuration of a cordless telephone device slave unit of the present invention.
FIG. 3 shows the voice paging procedure of the present invention.

In FIG. 1, 38 is a cordless telephone base unit in the present embodiment, 2 is a microphone, 3 is a speaker,
4 is a key input unit, 5 is an antenna, 6 is a receiving unit, 7 is a transmitting unit, 8 is a voice encoding unit, 9 is a multiplexing unit, 10 is a demultiplexing unit, 11 is a voice decoding unit, and 12 is a line interface. Section, 13 is a slot signal connecting section, 16 is a call response detecting means, 18 is an empty channel determining means, and 19, 20 and 21 are slaves A, B and C, respectively, which are the same as in the conventional example. Is. Reference numeral 39 is a voice paging management table that stores slot numbers of communication channels used at the time of paging voice, 40 is a control unit for controlling the entire master unit, and 41 is a voice paging instruction signal and requests transmission to a slave unit. Voice paging instruction means 42 is a communication channel instruction means for exchanging the voice paging management table and slot number data in addition to the function of the conventional communication channel instruction means.

In FIG. 2, 43 is a cordless telephone handset according to this embodiment, 23 is a microphone, 24 is a speaker, 25 is a key input section, 26 is an antenna, 27 is a receiving section, 28 is a transmitting section, 29 is a voice encoding unit, 30 is a multiplexing unit, 31 is a demultiplexing unit, 32 is a voice decoding unit, 33
Is a slot signal connection unit, and 37 is a communication channel instruction detecting means, which are the same as in the conventional example. Reference numeral 44 is a control section for controlling the entire master unit, and 45 is a voice simultaneous call detection response means for detecting and automatically responding to the voice simultaneous call signal from the master unit.

The operation of the cordless telephone device constructed as above will be described below. Since the transmission / reception operation in parent-child communication using the cordless telephone device of the present invention is exactly the same as the conventional example, the description of the transmission / reception operation will be omitted below. Hereinafter, a procedure for calling voice simultaneously using the cordless telephone device of the present invention will be described with reference to FIGS. 1, 2 and 3.

Now, in FIG. 1, when the user of the cordless base unit 38 uses the key input unit 4 to perform a voice paging operation, the control unit 40 determines that the voice paging is activated, and the voice paging instruction means 41 outputs a voice call. Request transmission of a general call instruction signal. Upon receiving the request for transmitting the voice simultaneous call instruction signal, the voice simultaneous call instruction means 41 forms a data string of the voice simultaneous call signal, and starts transmission to the slave units A19, B20, and C21.

On the other hand, in FIG. 2, the cordless slave unit 43
On the side, the voice paging detection response means 45 detects the reception of the voice paging instruction signal, forms a paging response signal for automatic response, and transmits it to the master unit.

Next, referring to FIG. 1, the cordless master unit 38
On the side, when the call response detecting means 16 first detects the call response signal from the handset A19 (handset A19, handset B2).
0, then the slave C21 is assumed to have responded in that order), and the fact is notified to the voice simultaneous call instructing means 41 and the communication channel instructing means 42. The voice simultaneous call instruction means that confirms the call response is
The transmission of the voice simultaneous call instruction signal is continued until all the slaves respond. Further, the communication channel instructing means 42, which recognizes the first call response, requests the idle channel determining means 18 to determine the communication channel to be used for a call with all the slaves.

Next, when an empty channel is determined on the side of the cordless base unit 38, the communication channel instructing means 17 records the slot number of the determined empty channel (assuming frequency A and slot 1) in the voice paging management table 39. However, in order to use the communication channel for calling the handset A by voice,
A data string of a communication channel instruction signal is formed and a transmission request is made. After that, the frequency setting of the communication channel is set by the transmitting unit 7,
The receiving unit 6 is instructed to instruct the slot signal connecting unit 13 to connect the audio signal from the microphone to the transmission output of the slot 1. At this time, the reception input of slot 1 is not connected to the speaker.

Next, in the handset A19, when the communication channel instruction detecting means 37 receives the communication channel instruction signal in the same manner as when receiving the voice paging signal, the frequency setting of the communication channel is performed according to the instruction of the received signal. To the transmission unit 28 and the reception unit 27, and instructs the slot signal connection unit 33 to connect the slot signal connection unit 33 with the voice signal from the microphone as the transmission output of the slot 1 and the reception input of the slot 1 with the speaker. I do. With the above procedure, a voice call can be made from the base unit to the handset A.

Further, in FIG. 1, the cordless master unit 38
On the side, when the call response detecting means 16 detects the call response signal from the slave unit B20, the fact that the call response detecting means 16 has notified the voice simultaneous call instructing means 4
1 and the communication channel instruction means 42. Upon confirming the call response, the voice simultaneous call instruction means continues to transmit the voice simultaneous call instruction signal until all the slaves have answered. Also,
The communication channel instructing means 42, which has recognized the call response, assigns the slot number of the already determined free channel (assuming frequency A and slot 1) to the voice paging management table 39.
Then, in order to use the slave B as a communication channel for calling by voice, a data string of a communication channel instruction signal is formed and a transmission request is made.

Next, in the handset B20, when the communication channel instruction detecting means 37 receives the communication channel instruction signal by the same method as when receiving the voice paging signal, the frequency setting of the communication channel is performed according to the instruction of the received signal. To the transmission unit 28 and the reception unit 27, and instructs the slot signal connection unit 33 to connect the slot signal connection unit 33 with the voice signal from the microphone as the transmission output of the slot 1 and the reception input of the slot 1 with the speaker. I do. With the above procedure, a voice call can be made from the base unit to the handset B.

Further, in FIG. 1, the cordless base unit 38
On the side, when the call response detecting means 16 detects the call response signal from the handset C21, the fact that the call response detecting means 16 has notified the voice simultaneous call instructing means 4
1 and the communication channel instruction means 42. Upon confirming the call response, the voice simultaneous call instructing means stops the transmission of the voice simultaneous call instruction signal when all the slaves have answered. In addition, the communication channel instructing means 42, which has recognized the call response, reads out the slot number of the already determined empty channel (assuming frequency A and slot 1) from the voice paging management table 39, and outputs the handset C by voice. In order to use the communication channel for calling, a data string of the communication channel instruction signal is formed and a transmission request is made.

Next, in the handset C21, when the communication channel instruction detecting means 37 receives the communication channel instruction signal by the same method as when receiving the voice paging signal, the frequency setting of the communication channel is performed according to the instruction of the received signal. To the transmission unit 28 and the reception unit 27, and instructs the slot signal connection unit 33 to connect the slot signal connection unit 33 with the voice signal from the microphone as the transmission output of the slot 1 and the reception input of the slot 1 with the speaker. I do. With the above procedure, a voice call can be made from the base unit to the handset C.

When a call is made from the microphone 2 of the base unit 38 in this state, a calling voice can be heard from the speakers 24 of all the handset units A19, B20, and C21, and a simultaneous call can be performed by voice.

FIG. 4 shows another voice paging procedure of the present invention. As shown in FIG. 4, unlike the above method, by making the communication channel different for each slave, it is possible to hear the voice response from each slave in response to the voice call from the master.

[0035]

As described above, according to the present invention, it is possible to make a simultaneous call by voice, so that the message from the master unit is transmitted to the slave unit even if the user of the slave unit does not perform a response operation. Moreover, the requirement from the master unit can be transmitted to all the slave units with one operation of the master unit, which greatly improves the usability.

[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 a configuration of a cordless telephone device slave unit according to an embodiment of the present invention.

FIG. 3 is a voice paging procedure according to an embodiment of the present invention.

FIG. 4 is another voice paging procedure according to an embodiment of the present invention.

FIG. 5 is a block diagram showing the configuration of a cordless telephone device master unit in a conventional example.

FIG. 6 is a block diagram showing a configuration of a cordless telephone device slave unit in a conventional example.

FIG. 7 is a paging procedure in an example of a conventional example.

FIG. 8 is an explanatory diagram of TDMA / TDD communication.

[Explanation of symbols]

 2 microphone 3 speaker 4 key input unit 5 antenna 6 receiving unit 7 transmitting unit 8 voice encoding unit 9 multiplexing unit 10 demultiplexing unit 11 voice decoding unit 12 line interface unit 13 slot signal connecting unit 16 call response detecting unit 18 empty Channel determining means 19 to 21 Cordless telephone device Handsets A to C 23 Microphone 24 Speaker 25 Key input unit 26 Antenna 27 Receiver 28 Transmitter 29 Voice encoder 30 Multiplexer 31 Demultiplexer 32 Voice decoder 33 Slot Signal connection unit 37 Communication channel instruction detection unit 38 Cordless telephone device master unit 39 Voice simultaneous call management table 40 Control unit 41 Voice simultaneous call instruction unit 43 Cordless telephone device slave unit 44 Control unit 45 Voice simultaneous call detection response unit

Claims (2)

[Claims] 1. A microphone, a speaker, a key input unit,
An antenna, a receiving unit that receives a high-frequency signal from the wireless telephone device slave unit and reproduces a digital signal, a transmitting unit that modulates the digital signal and transmits it as a high-frequency signal to the wireless telephone device slave unit, and a signal from a public line A voice encoding unit for digitizing a plurality of voice signals, a multiplex unit for time division multiplexing the plurality of digital signals output from the voice encoding unit into the same digital signal, and the time division multiplexed Connected to the public line, and a demultiplexing unit that separates the digital signal into a plurality of individual digital signals, a voice decoding unit that converts the plurality of digital signals output from the demultiplexing unit into an analog signal, and a voice signal. A line interface unit for closing the line, an input for each slot from the voice decoding unit, an input from the line interface unit, and an input from a microphone Output for each slot to the voice encoding unit, output to the line interface unit, and a slot signal connection unit connected to a speaker, and a voice simultaneous call management table that stores the slot number of the communication channel used at the time of voice simultaneous call. , A control unit for controlling the entire device, a voice paging instruction means for forming a voice paging instruction signal to the control unit and requesting transmission to the handset, and a call for detecting a call response signal from the handset A response detecting means, an empty channel determining means for determining an empty channel (frequency and slot) for a call, a communication channel instruction signal is formed, a transmission request is made to the handset, and a voice signal connection instruction is given to the slot signal connecting portion. Wireless telephone device master unit having a communication channel designating means for performing the above, a microphone, a speaker, a key input unit, and A receiver for receiving a high-frequency signal from the radio telephone master unit and reproducing a digital signal; a transmitter for modulating the digital signal and transmitting it as a high-frequency signal to the radio telephone master unit; and a voice signal A voice coding unit for digitizing, a multiplexing unit for time-division multiplexing the digital signal output from the voice coding unit, a demultiplexing unit for separating the time-division-multiplexed digital signal, and the demultiplexing unit. A voice decoding unit for converting a digital signal output from the unit into an analog signal and converting it into a voice signal, and an input for each slot from the voice decoding unit and an input from a microphone for each slot to the voice encoding unit. And a slot signal connection unit for connecting to a speaker, a control unit for controlling the entire apparatus, and a control unit for controlling the entire device, which further detects a voice simultaneous call instruction signal from the master unit and calls the master unit. Simultaneous voice call detection response means for automatically requesting a response signal, and a channel (frequency and slot) switching instruction to the transmitter and receiver by detecting the communication channel instruction signal from the master unit and to the slot signal connection portion. A wireless telephone device master unit, and a plurality of wireless telephone device slave units capable of TDMA / TDD wireless communication, and a plurality of slave units. On the other hand, a digital wireless telephone device that enables simultaneous voice calls. 2. The digital wireless telephone device according to claim 1, wherein a response from a slave unit can be confirmed by voice by making a slot of a communication channel used for simultaneous voice calling different for each slave unit.