JP3355499B2 - Wireless telephone equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio telephone system provided with a plurality of slave units and a master unit or a premises PBX capable of wireless communication with the slave units.

[0002]

2. Description of the Related Art In recent years, a wireless telephone device using a wireless connection instead of a cord for connecting a telephone set to a handset, a so-called cordless telephone, has been widely used.

Hereinafter, a conventional wireless telephone device will be described with reference to the drawings. FIG. 4 is a block diagram showing a configuration of a base unit of the conventional wireless telephone device, and FIG. 7 is a block diagram showing a configuration of a slave unit of the conventional wireless telephone device.

[0004] In FIG. 4, reference numeral 1 denotes a base unit of a wireless telephone device ;
2a and 2b are connected to an analog public line, and a line I / F section for closing the line, and 3 are slave units 11a, 11b and 11c.
A transmitting unit for transmitting a radio signal obtained by modulating a control signal and an audio signal to the receiving unit; a receiving unit for reproducing a control signal and an audio signal from the radio signals transmitted from the slave units 11a, 11b and 11c; A multiplexing unit for digitizing the signals of the above and time-division multiplexing into one signal; 6 a demultiplexing unit for separating the time-division multiplexed signal into a plurality of individual signals;
Reference numeral 7 denotes a wireless control unit that controls operations of the transmitting unit 3, the receiving unit 4, the multiplexing unit 5, and the multiplexing / demultiplexing unit 6. A line switching unit 8 selects one or two sets of the output of the demultiplexing unit 6 and the input to the multiplexing unit 5 and connects them to the line I / F units 2a and 2b.
Parts, 9 a central control unit for controlling the operation of the entire apparatus, 10 denotes an antenna, 12 is a memory a for storing the channel being used as the identification number of the slave unit using the radio channel
And 11a, 11b and 11c are slave units of the wireless telephone device.

[0007] In FIG. 7, in the slave unit 11 of the wireless telephone device, 20 is a speaker, 21 is a microphone (hereinafter referred to as a microphone), 22 is a key input unit, and 23 is a control unit.
The control unit 24 includes data output from the key input unit 22 and the master unit 1
A transmission unit for modulating a control signal and a voice signal transmitted from the base station to generate a radio signal; 25, a reception unit for receiving a radio signal transmitted from the base unit 1 and reproducing the control signal and the voice signal; Is an antenna.

Hereinafter, the interrelationship and operation of the above components will be described. FIG. 5 is a flowchart showing the operation of the conventional wireless telephone device. When a call is made from the slave unit using the wireless telephone device, first, in step A, the power of the slave unit 11a is turned on, and when the call button is pressed to make a call from the slave unit, the process proceeds to step B, where the control unit 23 The transmission unit 24 is controlled to send a control signal to the base unit 1, and the base unit 1
After receiving this signal, the signal is reproduced and sent to the demultiplexing unit 6. Next, in step C, the wireless control unit 7 of the base unit 1 decodes this control signal, detects that there is a call request from the handset 11a, sends the detection signal to the central control unit 9, The transmitting unit 3 transmits an acknowledgment signal (ACK) from the transmission unit 3 to the slave 11a via a downlink slot corresponding to the uplink time slot transmitted by the slave 11a, and connects a wireless link to the slave 11a.

Next, the process proceeds to step G, where it is checked whether or not all the public lines connectable to the base unit 1 are not connectable, that is, are busy. The central control unit 9 already controls the line switching unit 8, selects two sets of the output of the demultiplexing unit 6 and the input of the multiplexing unit 5, and closes the connection to the public line via the line I / F units 2a and 2b. However, if all the public lines to which the base unit 1 can be connected are in use, the process proceeds to step X, where the central control unit 9 sends the wireless control unit 7 to the slave unit 11a via the transmission unit 3 to send the public line to the slave unit 11a. A signal indicating that all the lines are in use, that is, a busy signal is controlled so as to notify the user that the call cannot be made. Next, in step Y, the user receives the busy signal and presses the end button to disconnect the wireless link.

On the other hand, if there is at least one vacant public line to which the master unit 1 can be connected, the process proceeds to step D, where the central control unit 9 having received the detection signal controls the line switching unit 8,
The line switching unit 8 selects a slot corresponding to the time slot from a plurality of lines input from the demultiplexing unit 6 and connects the selected line to the line I / F unit 2a or 2b corresponding to an empty public line. Next, in step E, similarly to a normal wired telephone device, when the telephone number is input by operating the key input unit 22 of the slave unit 11a, the control unit 23 transmits a multi-frequency signal (corresponding to the input telephone number). DTMF). This signal is transmitted via the transmitting unit 24 and the antenna 26 of the slave unit 11a, and the master unit 1 receives this signal via the antenna 10 and the receiving unit 4, and receives the signal via the line I / F unit 2a or 2b. And in step F, a conversation state is established in which normal conversation is possible. By the above operation, the calling operation of the slave unit 11a of the wireless telephone device is performed.

Next, a case where a call is received will be described. The flowchart in this case is omitted. First, when the central control unit 9 of the base unit 1 detects an incoming call from the public telephone line, the central control unit 9 transmits the control signal via the transmitting unit 3 to notify the handset 11a of the incoming call. Control. In the slave unit 11a, the control signal from the master unit 1 is received by the antenna 26 and the receiving unit 25, and is input to the control unit 23. The control unit 23 receives the control signal, detects that there is an incoming call to the base unit 1 and is calling the slave unit 11a, sounds a ringing sound of the slave unit 11a, and indicates that the user has received an incoming call. To inform. When the user hears the ringing tone and presses the talk button of the child device 11a, the transmitting unit 24 transmits a confirmation signal to the parent device 1. The base unit 1 receives the confirmation signal in the receiving unit 4, and when the wireless control unit 7 detects the confirmation signal, sends the confirmation signal to the central control unit 9. The central control unit 9 controls the line switching unit 8 to select a slot for notifying the slave unit 11a of the incoming call from a plurality of slots with the multiplexing unit 5, and to select a line I / O corresponding to the line on which the incoming call is made. While being connected to the F unit 2a or 2b, a wireless link between the master unit 1 and the slave unit 11a is connected to enter a call state.

The above operation is performed by the transmitting unit 9, the receiving unit 4,
Instead of the multiplexing unit 5 and the demultiplexing unit 6, as shown in FIG. 6, a plurality of transmitting units, that is, a transmitting unit 3a, a transmitting unit 3b,
.. And a plurality of receiving units, that is, receiving units 4a, 4b, 4c,. FIG. 6 shows a case where there are two transmission units and two reception units. In the above configuration, first, when a call is made, the power of the slave unit 11a is turned on, and when the talk button is pressed, the control unit 23 controls the transmission unit 24 to send a control signal to the master unit 1 and the master unit 1 Is the receiving unit 4a
This signal is received and reproduced. Next, when the wireless control unit 7 in the base unit 1 decodes the control signal and detects that there is a call request from the slave unit 11a, the wireless control unit 7 sends the detection signal to the central control unit 9 and simultaneously uses the transmission unit 3a. A confirmation signal is transmitted to the slave 11a, and a wireless link to the slave 11a is connected. Here, if all the public lines connectable to the base unit 1 are in use, the central control unit 9 controls the wireless control unit 7 to transmit a busy signal to the slave unit 11a via the transmission unit 3a, Notify the user that the call cannot be made. On the other hand, if there is at least one vacant public line to which the base unit 1 can be connected, the central control unit 9 receiving the detection signal causes the line switching unit 8
To select a vacant transmission unit and connect it to the line I / F unit 2a or 2b corresponding to the vacant line. After this,
According to the above-described procedure, the communication state is entered in which a normal conversation can be performed.

Next, a case where a call is received will be described. First, when the central control unit 9 of the base unit 1 detects an incoming call from the public line, the central control unit 9 controls the wireless control unit 7 in order to notify the incoming call to the slave unit 11a. Via the control signal. The slave 11a receives the control signal from the master 1 by the antenna 26 and the receiver 25 and inputs the control signal to the controller 23. The control unit 23 detects that there is an incoming call to the base unit 1 based on the control signal and that the base unit 1a is being called, and sounds a ringing sound of the base unit 11a to notify the user that there is an incoming call. When the user hears the ringing tone and presses the call button of the slave unit 11a, the transmitting unit 24
Is used to transmit a confirmation signal to the base unit 1. Base unit 1 is connected to sub unit 1 by receiving unit 4a corresponding to the transmitting unit that transmitted the incoming call signal.
When the confirmation signal of 1a is received, and the confirmation signal is detected by the wireless control unit 7, the confirmation signal is sent to the central control unit 9.
Thereafter, the central control unit 9 controls the line switching unit 8 to select the receiving unit 4a, and the line I / F unit 2a corresponding to the idle line.
Or together when connected 2b entering the wireless link connecting the communication state of the base unit 1 and the slave unit 11a.

[0012]

In such a conventional wireless telephone device, in a telephone call between a slave unit and a partner telephone via a public line, a call between a slave unit and a master unit, or a call between slave units, When all the wireless channels are used, there is a problem that a third party using the wireless channels cannot make or receive calls. In addition, the third user who could not make or receive a call has to make a call again at an appropriate time, and the operation is very troublesome. Further, a person who is making a call using the wireless channel does not know the status of use of the wireless channel and does not consciously end the call. There was also a problem that it could not be done.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a radio telephone apparatus which has a high probability of making and receiving a call using the radio channel successfully even when the radio channel is frequently used.

[0014]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a method for connecting a plurality of public lines and private lines to one another.
Comprising a base unit and a plurality of handset to re <br/> link via a radio channel between said master unit to said slave unit, the wireless switch
External line communication through the public line via the channel and the base unit.
In talking or wireless telephone device that performs a call between extensions according to the private telephone system, the base unit, the identification number of the slave unit as usage of the radio channel at the present time, are used
Wireless channel, the call is the external call or the internal call
And radio channel information table for storing accumulated Kano information for each calling and called Guy for generating a call termination reminder information
And a dance reproduction unit, when the radio channel at the present time is used more than the predetermined number, it sends the call end prompting <br/> information to the child device in a call between the extension via the radio channel , The slave unit has received the end call prompting information
This is a wireless telephone device configured to notify the user of the end call prompt information by displaying a sound, a voice message, an LED, or the like.

[0015]

According to the present invention, in the above configuration, the base unit accumulates and stores the current use status of the radio channel in the radio channel information table memory, and the radio channel is set in advance.
Prompts you to end the call if more than the set number is used
Sends information to a slave unit that is talking over an extension line via a wireless channel
Send. The child device that has received the information notifies the user of the information by sound, voice, light, or the like.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a radio telephone apparatus according to the present invention. FIG. 1 is a block diagram showing a configuration of a base unit of the wireless telephone device of the present embodiment. Note that the same components as those in the conventional example are assigned the same numbers, and detailed descriptions thereof are omitted. The configuration of the slave unit is the same as that of the conventional example shown in FIG. This embodiment is different from the conventional example in that a timer 13, a guidance reproducing unit 14, and a wireless channel information table 15 are provided. In the figure, 1
3 is a timer, and 14 is a guidance playback unit that stores voice messages used for notifying the slave unit that the wireless channel is being used more than a preset number, and plays back the voice message. In advance, a voice message saying "I'm sorry, but the number of users of the wireless channel is increasing, so please end the call immediately." Reference numeral 15 denotes the wireless channel information table shown in FIG. 8, and when there is a wireless channel link connection, the wireless channel use information and the identifier of the child device or the parent device using the wireless channel (calling side, destination Terminal identifier 1, terminal identifier 2, external line use information indicating whether the call is an external call or an internal call, and call start time information are stored in correspondence with each wireless channel number. For example, the wireless channel usage information includes “1” when in use, “2” when not in use,
In addition, “1” is stored in the external line use information when the external line is in use, and “2” is stored in the external line use information.

The operation of the above configuration will be described. FIG. 2 is a flowchart showing the transmission processing operation of the master unit of the wireless telephone device of the present embodiment. When the operator presses the talk button of the key input unit 22 after turning on the power, the step A
In, the control unit 23 of the slave unit 11 transmits a control signal requesting a calling operation to the master unit 1 from the transmission unit 24 via the antenna 26. Next, in step B, the receiving unit 4 of the base unit 1 receives the control signal via the antenna 10, reproduces the control signal in the demultiplexing unit 6, and proceeds to step C, where the wireless control unit 7 transmits the control signal. It decodes and detects that there is a call request from the slave unit 11. Next, in step D, the master unit 1 transmits a call response signal to the slave unit 11, and proceeds to step E to establish a wireless channel connection between the master unit and the slave unit.

In step I, it is checked whether the call from the slave unit is a public line, that is, a communication using an external line or a communication using an internal line. When the outgoing call is communication using an outside line, master device 1 updates the information of the wireless channel information table as follows. In step F, the external line use information corresponding to the wireless channel number being used is written as "1", and in step G, the wireless channel use information is "1", and the identifier of the slave unit 11 that has called the wireless channel is stored in the terminal. As the identifier 1, the identifier of the base unit 1 that has called the wireless channel is written as the terminal identifier 2, and the time input from the timer 13 is written as call start time information. If the call is a communication that does not use the public line, that is, if the call is to an extension, the base unit 1 updates the information in the wireless channel information table as follows. In step H, the outside line use information corresponding to the wireless channel number being used is written as "2", and the process proceeds to step G, where the wireless channel use information is set to "1", and the identifier of the slave unit that has called the wireless channel is entered. In the terminal identifier 1, the identifier of the master unit that has called the wireless channel is written in the terminal identifier 2, and the time input from the timer 13 is written as call start time information. Through the above processing, the usage status of the wireless channel for the call is stored in the wireless channel information table 15.

Next, a case where a call is received from a public line will be described. First, when the central control unit 9 of the base unit 1 detects an incoming call from the public line, the wireless control unit 7 transmits a control signal via the transmitting unit 3 to notify the sub unit 11a of the incoming call. Control. The slave unit 11a receives the control signal from the master unit 1 by the receiving unit 25 via the antenna 26, and inputs the control signal to the control unit 23. Next, the control unit 23 detects from the control signal that there is an incoming call to the base unit 1 and calls the slave unit 11a, and sounds a ringing tone of the slave unit 11a to notify the user that there is an incoming call. Inform. When the user hears the ringing tone and presses the talk button of the child device 11a, the transmitting unit 24 transmits a confirmation signal to the parent device 1. The base unit 1 receives the confirmation signal in the receiving unit 4, detects the confirmation signal in the wireless control unit 7, and sends it to the central control unit 9. After that, the central control unit 9 controls the line switching unit 8 to select a slot informing the slave unit 11a of an incoming call from a plurality of slots with the multiplexing unit 5 and to respond to the line on which the incoming call is made. Connected to the line I / F unit 2a or 2b
Then, a wireless link to the slave unit 11a is connected and a call state is established.

In the incoming call operation, base unit 1 updates the information in the radio channel information table as follows. The wireless channel use information corresponding to the wireless channel number being used is written as “1”, and the outside line use information is written as “1”,
In addition, the identifier of the base unit that has called the wireless channel is written in terminal identifier 1, the identifier of the slave unit that has called the wireless channel is written in terminal identifier 2, and the time input from the timer is written as call start time information. With this processing, the usage status of the wireless channel for the incoming call is stored in the wireless channel information table 15.

Next, the notification processing operation of the master unit 1 when the number of wireless channels increases will be described. FIG. 3 shows the main unit 1.
9 is a flowchart showing the notification processing operation of the first embodiment. Master device 1 monitors the usage status of the wireless channel as described above, and stores the status in wireless channel information table 15. In step A, the number of currently used wireless channels is read from the information in the wireless channel information table, and in step B, the number of used wireless channels is compared with a predetermined number set in advance to check whether the number is equal to or more than the predetermined number. I do. If the number of used wireless channels is equal to or more than the predetermined number, the process proceeds to step C, and the end device transmits end call prompting information for prompting the end device to end the call. In step D, the child device that has received the transmission information notifies the user of the sound or voice message on the speaker or the display of the LED or the like. Further, when notifying the slave unit of the end call prompting information by a voice message, the slave unit is notified using the guidance reproduction unit 14.

There are the following methods for selecting a slave unit for notifying the end-call prompt. In the first method, the master unit measures the talk time of the slave unit using the wireless channel using the call start time information and the timer 13 in the wireless channel information table, and the wireless channel counts more than the preset number. When used, the information is transmitted via a wireless channel to a slave unit that has a maximum talk time or a talk time longer than a predetermined time.

According to the second method, when the base station uses the outside line usage information in the wireless channel information table, if the number of wireless channels is more than a preset number, the base station does not use the outside line via the wireless channel. The call is transmitted to the child device that is talking, that is, a call between extensions. As a method of prompting the end of the call, the control information or the voice message stored in the guidance reproducing unit 14 is transmitted from the master unit to the slave unit.

In any case, the user of the slave unit that has been notified is provided with a sound or a voice message on the speaker or the like or the LE.
Since the notification is displayed by a display such as D, the call can be immediately ended. In addition, if the slave unit selected by the master unit and prompted to end the call in the above way is not terminated after a preset time after notification, the call can be forcibly terminated. It is. It is needless to say that, when the call ends and the use of the wireless channel ends, the wireless channel information table of the corresponding wireless channel number is cleared.

As described above, according to the present embodiment, the base station of the wireless telephone device stores the usage status of the wireless channel in the wireless channel information table every time a call is made and an incoming call is received. when the number exceeds a predetermined value, by which is adapted to transmit the call termination reminder information to the child device, suppressing long phone call, it makes better use of the radio channel, when the emergency situation occurs Can increase the probability of a successful call.

[0026]

As is apparent from the above description, the present invention relates to a master unit connected to a plurality of public lines and private lines, and a plurality of slave units linking the master unit via a radio channel. And the slave unit, wherein the slave unit and the wireless channel
External line communication via the public line via the master unit or
In the wireless telephone apparatus for performing the extension between call by the private telephone system, the base unit, the identification number of the slave unit as usage of the radio channel at the present time, a wireless switch using
Information on whether the channel is the outside line call or the inside line call
And radio channel information table accumulates and stores for each calling and called a re guidance for generating the End reminder information
And a raw portion, when the radio channel at the present time is used more than the predetermined <br/> number, before the call end reminder information
Serial and transmitted to the wireless channel slave unit during a call between the extension through, slave unit, upon receiving the call termination reminder information, said call end by a display such as a sound or a voice message, or LED,
By notifying the user of the reminder information , even when the wireless channel is frequently used, it is possible to increase the probability of success in making and receiving calls using the wireless channel. Can be resolved.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing an outgoing / incoming call processing operation of a base unit of the wireless telephone device of the present invention;

FIG. 3 is a flowchart showing a notification processing operation of a base unit of the wireless telephone device of the present invention.

FIG. 4 is a block diagram showing a configuration of a base unit of a conventional wireless telephone device.

FIG. 5 is a flowchart showing a call processing operation of a base unit of the conventional wireless telephone device.

FIG. 6 is a block diagram showing another configuration of the parent device of the conventional wireless telephone device.

FIG. 7 is a block diagram showing a configuration of a slave unit of a conventional wireless telephone device.

FIG. 8 is a schematic diagram showing a configuration of a wireless channel information table in a base unit of the wireless telephone device of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 master unit of wireless telephone device 11a, 11b, 11c slave unit of wireless telephone device 13 timer 14 guidance reproduction unit (prompting information generating means) 15 wireless channel information table

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) H04Q 7/38 H04M 1/725, 1/00

Claims (1)

(57) [Claims] 1. A system connected to a plurality of public and private lines.
Comprising a base unit and a plurality of handset to re <br/> link via a radio channel between said master unit to said slave unit, the wireless switch
External line communication through the public line via the channel and the base unit.
In talking or wireless telephone device that performs a call between extensions according to the private telephone system, the base unit, the identification number of the slave unit as usage of the radio channel at the present time, are used
Wireless channel, the call is the external call or the internal call
And radio channel information table for storing accumulated Kano information for each calling and called Guy for generating a call termination reminder information
And a dance reproduction unit, when the radio channel at the present time is used more than the predetermined number, it sends the call end prompting <br/> information to the child device in a call between the extension via the radio channel , The slave unit has received the end call prompting information
Come, the wireless telephone apparatus adapted to notify the call termination reminder information to the user by a display such as a sound or a voice message, or LED,.