JPH06303293A - Radio telephone equipment - Google Patents

Abstract

PURPOSE:To allow a slave equipment A to receive an incoming call when a slave equipment B calls the slave equipment A during speech and furthermore, to switch speech in the plural slave equipments capable of radio-communicating with the master equipment of a radio telephone equipment. CONSTITUTION:A speech control table 31 stores a slot number used for the speech by the slave stations and a speech state. An in-speech incoming call detection means 33 detects the incoming call to the slave equipment during speech to inform it to the pertinent slave equipment. An in-speech incoming call response judging means 34 judges the incoming call response of the slave equipment and after a speech switch judgment means 35 judges the speech switching requirement of the slave equipment and it instructs the connection switching of the slot signal in accordance with the contents of the speech control table 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of slave units capable of wireless communication with a master unit of a wireless telephone device.

[0002]

2. Description of the Related Art A conventional radiotelephone device is constructed as shown in a block diagram of a master unit in FIG. 4 and a slave unit in FIG.
In FIG. 4, 1 is a master unit, 2 is a line interface unit for closing a line connected to a telephone line, 3 is a speaker, 4 is a microphone, 5 is a microphone, and 4 is an input signal from the line interface unit 2. A slot signal connection unit for receiving a signal for each slot from the slave unit and outputting an output signal to the speaker 3, the line interface unit 2 and a signal for each slot to the slave unit, 6 is output from the slot signal connection unit 5. A voice encoding unit for digitizing a plurality of voice signals, 7 is a multiplexing unit for time division multiplexing the plurality of digital signals output from the voice encoding unit 6 into one digital signal, and 8 is a multiplexer unit 7. , A transmitting unit that modulates the digital signal and transmits it as a high frequency signal to the slave unit, 9 is an antenna, 10 is a receiving unit that receives the high frequency signal from the slave unit and reproduces it as a digital signal, 11 is time division multiplexing Demultiplexing unit for demultiplexing the digital signal into a plurality of digital signals, 12 a voice decoding unit for converting a plurality of digital signals output from the demultiplexing unit 11 into a voice signal, 13 a key input unit, 14 a device A control unit that performs overall control, 15a is a child device A, 15b is a child device B, and 15c is a child device C.
Is.

Further, in FIG. 5, reference numeral 15 is a slave unit, 16 is a speaker, 17 is a microphone, and 18 is an input signal from the microphone 17 and outputs the slot signal to the master unit or the slot signal from the master unit. A slot signal connector for receiving the output signal to the speaker 16, a voice encoder for digitizing a voice signal, a multiplexer 20 for time-division multiplexing a digital signal, and a parent for converting a high frequency signal into a parent signal. To the device, 22 is an antenna, 23 is a receiving unit for receiving high-frequency signals from the base unit, 24
Is a demultiplexing unit that separates the time-division-multiplexed digital signal, 25 is a voice decoding unit that converts the digital signal into a voice signal, 26 is a key input unit, and 27 is a control unit that controls the entire apparatus.

The operation of the conventional radiotelephone device configured as described above will be described below. First, regarding the TDMA / TDD communication performed between the parent and child of the wireless telephone device,
This will be described with reference to FIG.

As shown in FIG. 6, with respect to one child device, the parent device has one section (slot: upstream slot and downstream slot are synchronized) that is uniformly divided in time on the same frequency. Use and exchange send / receive data.

For example, when slot 1 is used for communication between the master unit and one slave unit, Tx in the downlink transmission slot is set on the master unit side.
1 transmits data, and Rx1 in the downlink reception slot receives data.

On the other hand, on the handset side, T in the uplink transmission slot
Data is transmitted at x1, and data is received at Rx1 in the uplink transmission slot.

Further, control data is exchanged except during a call, but voice data and control data can be exchanged at the same time during a call.

Now, when a call is being made between the handset A15a and the handset B15b in FIG. 4, the communication data with the base unit 1 respectively.
Slots 1 and 2 for exchanging (voice data, control data)
, The audio signal of the handset A15a is as shown in FIG.
At the same time, it is input from the microphone 17 and connected to the slot 1 transmission output by the slot signal connection unit 18, digitized by the voice encoding unit 19, time-division multiplexed by the multiplexing unit 20, and converted into a high frequency signal by the transmitting unit 21. It is modulated and transmitted to the master unit 1 via the antenna 22.

On the other hand, on the side of the main unit 1, as shown in FIG.
The high frequency signal transmitted from a is received by the receiving unit 10 via the antenna 9 and reproduced as a digital signal, the demultiplexing unit 11 separates the signal of slot 1 and the voice decoding unit 12 receives the slot 1 signal.
After the analog signal of the digital signal is converted into a voice signal, the received voice signal of slot 1 is connected to the transmission output of slot 2 by slot signal connection unit 5, digitized by voice encoding unit 6, and multiplexed by multiplexing unit 7. The signals are time-division multiplexed, modulated by the transmitter 8 into a high frequency signal, and transmitted to the handset B15b via the antenna 9.

In the slave unit B15b, in FIG. 5, the high frequency signal transmitted from the master unit 1 is received by the receiving unit 23 via the antenna 22 and reproduced as a digital signal, and the demultiplexing unit 24 separates the signal of the slot 2. Then, the voice decoding unit 25 converts the digital signal of slot 2 into an analog signal and converts it into a voice signal, and the slot signal connecting unit 18 outputs the received voice signal of slot 2 to a speaker.
By connecting to the speaker 16, the voice input from the microphone 17 of the slave A15a is reproduced by the speaker 16 of the slave B15b.

Similarly, the voice input from the microphone 17 of the handset B15b is reproduced by the speaker 16 of the handset A15a, and the voice of the handset A1 is reproduced.
The call between 5a and the handset B15b becomes possible.

[0013]

However, in the above-described conventional wireless telephone apparatus, when an extension call is made to a device in a call from another handset which is not in a call, the extension called by the called handset is received. The present invention, which has a problem that a call cannot be accepted, solves the above problem and requests an extension call request from another slave device that is not in a call to a slave device that is in a call (first call). In this case, for the purpose of providing a wireless telephone device capable of accepting an incoming call to the extension (second call) and switching between the first call and the second call by operating the key of the called slave unit. There is.

[0014]

In order to achieve the above object, the present invention is provided with a call management table for storing a slot number used for a call of a child device and a call state in the parent device, and further, the entire parent device. The control unit that controls that the incoming call to the applicable slave unit is detected by the control unit that controls the Incoming call response determining means for determining incoming call response and instructing connection switching of slot signal, and call switching determination for instructing connection switching of slot signal by determining call switching request from a handset in a call state Means are provided.

[0015]

According to the present invention, with the above-described configuration, when an extension call request is made to another handset that is in a call (first call) from another handset that is not in a call, by operating the key of the called handset, An extension call can be accepted (second call), and the first call and the second call can be switched.

[0016]

Embodiments will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a master unit of the present invention, FIG. 2 is an extension call operation procedure of the master unit of the present invention, slave unit A, slave unit B, and slave unit C, and FIG. 3 is an example of the call management table of FIG.

In FIG. 1, reference numeral 30 is a base unit in this embodiment, 2 is a line interface unit, 3 is a speaker, 4 is a microphone, 5 is a slot signal connection unit, 6 is a voice encoding unit,
7 is a multiplexing unit, 8 is a transmitting unit, 9 is an antenna, 10 is a receiving unit, 11 is a demultiplexing unit, 12 is a voice decoding unit, 13 is a key input unit, 15a is a handset A, and 15b is a handset B. , 15c is a child device C,
These are similar to the conventional example.

Reference numeral 31 is a call management table that stores the slot number used for the call of the slave unit and the call state, 32 is a control unit that controls the entire apparatus, and 33 is an incoming call to the slave unit in the call state. That the incoming call is detected to notify the incoming call to the corresponding slave unit, and 34 is a call for instructing the connection switching instruction of the slot signal by judging the incoming call response from the incoming slave unit A middle incoming call response determining means, 35 is a call switching determining means for determining a call switching request from a slave unit in a call state and giving a connection switching instruction of a slot signal.

The operation of the wireless telephone device configured as described above will be described below. The call operation between the handset units using the wireless telephone device of the present invention is exactly the same as the conventional example, but during the call between the handset units A and B, the handset unit C is operated by the handset unit A.
The case of calling will be described with reference to FIGS. 1, 2 and 3.

First, the child device C15c calls the child device A15a.
When the extension +1 is pressed (for example, the extension +1 is pressed), an extension call request signal is transmitted from the child device C15c to the parent device 30 using the slot 3. Base unit 30
When the busy incoming call detecting means 33 detects that the received data is deciphered by the control unit 32, the data is an extension call request, and that the remote terminal A15a on the called side is in a call state, the busy incoming call detection is detected. means
33 uses slot 1 to send an instruction for a busy incoming call to the destination slave device A15a, and sends an instruction for accepting an extension call to a slave device C15c on the originating side using slot 3.

At this time, the handset A15a receives the transmission signal from the base unit 30 and sounds a sound indicating an incoming call during busy, and the handset C15c sounds a sound indicating a call confirmation.

Next, when a key (for example, a hook key) for responding to an extension call that is busy on the handset A15a is pressed, data indicating that the key has been pressed is transmitted from the handset A15a to the base unit 30. Then, the busy incoming call response determination means 34 of the base device 30 causes the handset device A to operate.
15a determines that it has answered the incoming call, writes the contents of Fig. 3 1) to the call management table for handset A, sends an instruction to stop the ringing tone for the handset to handset A15a, and extends to handset C15c. Send a call response instruction. Then, the handset A15a stops the busy ring tone, and the handset C15c stops the ringing confirmation tone.

Further, the base unit 30 has a busy incoming call response determination means.
34 refers to the data of the call management table 31, and instructs the slot signal connection section 5 to change the connection of the slot signal as follows. 1. The received voice signal in slot 1 is sent to the transmission output in slot 3. 2. Disconnect the received voice signal in slot 2. 3. Received voice signal of slot 3 is transmitted to the output of slot 1. 4. The hold tone is sent to the transmission output of slot 2 (the handset B15b hears the hold tone).

Thus, when an extension call request is made to another cordless handset in a call (first call) from another cordless handset, the extension incoming call is accepted by the key operation of the called cordless handset.
(Second call) can be made.

Further, in this state, the slave A15a to the master 30
The data indicating that the key was pressed is transmitted, and the master unit 30
Then, the call switching determination means 35 determines that the handset A15a has requested the call switching, and the call table for the handset A is displayed in FIG.
Change to the contents of 2), refer to the data of the call management table 31, and instruct the slot signal connection unit 5 to change the connection of the slot signal as follows. 1. The received voice signal of slot 1 is sent to the transmission output of slot 2. 2. Received voice signal of slot 2 is transmitted to the output of slot 1. 3. Disconnect the received voice signal in slot 3. 4. The hold tone is sent to the transmission output of slot 3 (the handset C15c hears the hold tone).

With this, the second call can be switched to the first call. After that, the same operation of the handset A15a (for example, pressing the hook key) can switch the first and second calls.

Further, in the above-mentioned example, the case where the extension call is made from another handset to the handset in the middle of a call between handset units has been described, but the case shown in FIG. 8 and 13 show the operation procedure thereof.

The structure of the call management table 29 is shown in FIG.
By doing 3), 4), and 5) of the above, even after accepting an extension incoming call during a call, an extension call from another cordless handset that is not in a call can be accepted and three calls can be switched, Further, by adding the call management table 31 in the same way, it is possible to switch between three or more calls.

[0029]

As described above, according to the present invention, during a call.
Even if an extension call request is made to a (first call) handset from another handset that is not in a call, an extension call is accepted by the key operation of the called handset (second call), Furthermore the first
Since it is possible to switch between the second call and the second call, the user of the child device can quickly make a call without missing an important call, which is very convenient.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a master unit according to an embodiment of the present invention.

FIG. 2 is a diagram showing an extension call operation procedure of a master unit, a slave unit A, a slave unit B, and a slave unit C in one embodiment of the present invention.

FIG. 3 is an example of a call management table for handset A of the present invention.

FIG. 4 is a block diagram showing a configuration of a parent device in a conventional example.

FIG. 5 is a block diagram showing a configuration of a slave unit in a conventional example.

FIG. 6 is an explanatory diagram of TDMA / TDD communication.

FIG. 7 is a list of other types of extension numbers for making extension calls during a call, which is possible in the present invention.

FIG. 8 is a diagram showing an extension call operation procedure of another base unit, handset A, handset B, and handset C that are possible in the present invention.

FIG. 9 is a diagram showing an extension call operation procedure of another base unit, handset A, handset B, and handset C which are possible in the present invention.

FIG. 10 is a diagram showing an extension call operation procedure of another base unit, handset A, handset B, and handset C that are possible in the present invention.

FIG. 11 is a diagram showing an extension call operation procedure of another base unit, handset A, handset B, and handset C that are possible in the present invention.

FIG. 12 is a diagram showing an extension call operation procedure of another master unit, slave unit A, slave unit B, and slave unit C that are possible in the present invention.

FIG. 13 is a diagram showing an extension call operation procedure of another base unit, handset A, handset B, and handset C which are possible in the present invention.

[Explanation of symbols]

1,30 ... Main unit, 2 ... Line interface unit, 3,
16 ... Speaker, 4,17 ... Microphone, 5,18 ... Slot signal connection section, 6,19 ... Speech coding section, 7,20 ... Multiplexing section, 8,21 ... Transmission section, 9,22 ... Antenna, 10 ，
23 ... Receiving unit, 11, 24 ... Demultiplexing unit, 12, 25 ... Voice decoding unit, 13, 26 ... Key input unit, 14, 27, 32 ... Control unit, 15 ... Slave unit, 15a ... Slave unit A, 15b ... Handset B, 15
c ... Handset C, 31 ... Call management table, 33 ... Busy incoming call detection means, 34 ... Busy incoming call response determination means, 35 ... Call switching determination means.

Claims (2)

[Claims] 1. A master unit connected to a telephone line and a plurality of slave units capable of wireless communication with the master unit, wherein the master unit is connected to a telephone line and closes the line. An interface unit is connected to a speaker and a microphone, receives an input signal from the microphone and the line interface unit and a slot-by-slot signal from the slave unit, and outputs an output signal to the speaker and the line interface unit and a slot to the slave unit. A slot signal connection unit for transmitting the signal, a transmission means for encoding a plurality of audio signals received from the slot signal connection unit, time-division-multiplexing and transmitting to a slave unit as a high frequency signal, and a high frequency wave received from the slave unit. A receiver is provided for demultiplexing the signal, decoding it into an audio signal and sending it to the slot signal connector, and a controller to which the key input unit is connected and which controls the entire apparatus. In addition, a call management table that stores the slot number used for the call of the cordless handset and the call state, and the fact that there is an incoming call to the cordless handset that is in the call state, and the corresponding cordless handset is called. In-busy incoming call detection means for notifying, in-busy incoming call response determining means for determining an incoming call response from the slave unit that received the busy incoming call, and for instructing connection switching of the slot signal, and from the slave unit in the busy state A call switching determination means for determining a busy switching request and instructing connection switching of a slot signal. The slave unit is connected to a speaker and a microphone, and receives a signal input from the microphone to a master unit. A slot signal connection unit that sends out a slot signal or outputs a signal output to the speaker in response to a slot signal from the base unit, and a voice signal received from the slot signal connection unit are encoded and time-division multiplexed. Base unit as high frequency signal A control unit for connecting the transmitting unit for transmitting, the receiving unit for demultiplexing the high-frequency signal received from the master unit, decoding the voice signal and transmitting it to the slot signal connecting unit, and the key input unit for controlling the entire apparatus. When an extension call request is made to a cordless handset that is in a call (first call) from another cordless handset that is not in a call, the extension incoming call is accepted by key operation of the called cordless handset ( A second telephone call), which enables switching between the first telephone call and the second telephone call. 2. When an extension call request is received from another cordless handset after receiving an extension call in progress, a key operation of the called cordless handset is used to accept the extension call and switch the call. The wireless telephone device according to claim 1, wherein the wireless telephone device is enabled.