JPH06205089A - Digital cordless telephone set - Google Patents

Abstract

PURPOSE:To call a slave set from a master set without affecting on line wire speech by using a user packet channel between the master set and the slave set when the master set calls the slave set while the slave set is holding speech on a line wire. CONSTITUTION:A protocol controller 5 which transmits an interruption control signal to call the slave set 2 by using the user packet channel used arbitrarily is provided at a master set 1 side separately from a communication channel 5a being used in the speech. Also, a protocol controller 5 which transmits a confirmation control signal to transmit the reception of the interruption control signal from the master set 1 to the master set 1 by using the user packet channel 5b is provided at a slave set 2 side. In other words, since the control signal can be transferred between the master set 1 and the slave set 2 by using the user packet channel 5b, the line wire speech can be prevented from being affected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital cordless telephone for digitally transmitting control signals and voice signals between a master unit and a slave unit.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional analog cordless telephone for transmitting control signals and voice signals in an analog manner between a master unit and a slave unit while the master unit is communicating with an outside line via the master unit. FIG. 7 is a sequence diagram showing a communication procedure when a mobile device calls a slave device. In the figure, 1 is a master unit, 2 is a slave unit, 3
Is a telephone line or outside line.

In such a device, when the handset 2 calls the handset 2 while the handset 2 is in communication with the handset 1 through the handset 1, the handset 2 and the third line 3 are called. While maintaining the state of the call with the terminal, the control signal of "interrupt" is transmitted from the base unit 1 to the handset 2 using the same communication channel. Upon receiving this, the slave unit 2 transmits a control signal of “confirmation” to the master unit 1 using the same communication channel, and outputs a voice signal indicating an interrupt from the receiver, the speaker, or the sounder. , Notifies the user of the child device 2 that there is an interrupt.

Upon receiving the notification, the user of the cordless handset 2 can disconnect the outside line 3 during the call by answering the call (depressing the extension button) and answer the call from the master unit 1. it can. In addition, by performing an operation for holding an outside line call (pressing the hold button), the outside line during a call can be held and a call from the master unit 1 can be answered.

[0005]

Since the conventional analog cordless telephone transmits the interrupt control signal during a call as described above, if there is an interrupt during a call, the control signal is added to the voice during the call. Are mixed, and the user of the cordless handset 2 and the partner of the outside line call hear only noise,
There was a problem that a comfortable call could not be continued.

By the way, in digital cordless telephones which are being standardized at present, in addition to the first logical channel (communication channel) used for communication, a second logical channel (user packet channel) whose usage is arbitrary. )
Has been defined, but this user packet channel was not specifically used.

In view of the above points, the present invention, when it is necessary to call the slave unit from the master unit or the intercom while the slave unit is talking with the outside line, without affecting the outside line call, the master unit or the intercom. You can call a child machine from
It is an object of the present invention to obtain a digital cordless telephone capable of transmitting a simple message from a master unit to a slave unit.

[0008]

SUMMARY OF THE INVENTION A digital cordless telephone according to the present invention provides a base station with a communication channel used for a call when calling a handset that is in a call with an external line through the base unit. Separately defined usage methodProvides means for transmitting an interrupt control signal for calling a slave unit using an arbitrary user packet channel, and at the same time, the slave unit receives the interrupt control signal from the master unit. A means for transmitting a confirmation control signal for transmitting the reception to the master unit by using a user packet channel which is defined separately from the communication channel used for the call is used. is there.

Further, in the digital cordless telephone according to the present invention, the interrupt control signal for calling the slave unit is generated by pressing the extension button of the master unit or the calling button of the intercom.

In the digital cordless telephone according to the present invention, a character display means is provided in the handset and information for displaying a character message on the character display means is added to an interrupt control signal for calling the handset. Is.

[0011]

According to the present invention, when the extension unit button of the base unit or the call button of the intercom is pressed to call the handset while the handset is talking to the outside line, the user packet channel is set between the base unit and the handset. Since I used it to send and receive control signals,
The slave unit can be called from the master unit or doorphone without affecting the outside line call.

Further, since the character display means is provided in the slave unit and the message information is added as a parameter to the interrupt control signal transmitted from the master unit to the slave unit using the user packet channel, the master unit can be used even during a call. Can send a simple message to the handset.

[0013]

EXAMPLES Example 1. The present invention will be described below with reference to illustrated embodiments. FIG. 1 is a conceptual diagram showing a system configuration of a digital cordless telephone according to an embodiment of the present invention, FIG. 2 is an external view of a master unit and a slave unit, and FIG. 3 is an explanation of channel data created by the protocol controller. In each drawing, the same reference numerals are given to the portions corresponding to the conventional ones.
1 to 3, 1 is a master unit, 2 is a slave unit, and 3 is a telephone line, that is, an outside line connected to the master unit 1.

The master unit 1 transmits / receives call data and the like to / from the slave unit 2 via an antenna, a protocol controller 5 for creating channel data, and a main control unit 6 for controlling the protocol controller 5. , A NCU (network control unit) 8 which is an interface with the outside line 3, a speech network 9 connected to the NCU 8, a receiver 10 and a microphone 11 connected to the speech network 9, and a speech network. 9 and a protocol controller 5, which are provided with an analog / digital conversion means 12 for performing analog / digital conversion of voice data, a sounder 13 for notifying reception, a display section 14 such as LCD and LED, an extension button 15 and the like. The operation unit (keypad) 16 is included.

Further, the microcomputer 7 is connected to the main control section 6 and outputs a voice control signal to the sounder 13, the speech network 9 and the analog / digital converting means 12 based on the voice control information inputted from the main control section 6. Based on the output voice control unit 17 and the outside line control information connected to the main control unit 6 and input from the main control unit 6, the NCU 8
An outside line control unit 18 that outputs an outside line control signal, a display control unit 19 that is connected to the main control unit 6 and causes the display unit 14 to display based on display data input from the main control unit 6,
An input control unit 2 that outputs input data such as a key signal when the extension button 15 of the operation unit 16 is pressed or a call signal when the call button 20a of the external intercom 20 is pressed to the main control unit 6.
1 and 1.

The main controller 6 has a user packet channel data judging means 6a and a user packet channel using means 6b therein.

The protocol controller 5 has a communication channel 5a and a user packet channel 5b, creates voice data on the communication channel 5a, and creates control data such as "interrupt" during a call on the user packet channel 5b. However, both of them have a function of transmitting them from the transmitting / receiving unit 4 and distributing the voice data and the control data such as "confirmation" sent from the slave unit 2 in the same manner to each channel. That is, when transmitting and receiving, both channels are always used for transmission and reception. Therefore, when there is no "interruption" during a call, data is written only in the communication channel 5a, nothing is written in the user packet channel 5b, and it seems that only the communication channel 5a is substantially used. It will be a behavior. However, if there is an "interrupt" during a call, this "interrupt" control data is written to the user packet channel 5b, and the "interrupt" control data written to this user packet channel 5b is transferred to the communication channel 5a. Since it is sent together with the voice data of, the control signal of "interrupt" is not mixed with the voice during the call, and the comfortable call can be continued.

On the other hand, the cordless handset 2 includes the outside line 3 and the intercom 20.
Since they are connected via the base unit 1, they do not have the NCU, the speech network, and the outside line control unit installed on the side of the base unit 1. Since the other configurations are the same as those of the base unit 1, the corresponding parts are designated by the same reference numerals and the description thereof will be omitted.

FIG. 4 is a block diagram showing a concrete system configuration of the digital cordless telephone of this embodiment.
Portions corresponding to those in FIG. 1 are designated by the same reference numerals. In FIG. 4, 30 is an ADPCM (adaptive differential P) having an analog / digital conversion function of voice data.
CM), which is installed between the speech network 9 and the protocol controller 5 and corresponds to the analog / digital conversion means 12 in FIG. In addition, the amplifier 31,
The frequency converter 32 and the modulator 33 are incorporated in the transmission / reception unit 4 of FIG. 1 and control transmission. Similarly,
The amplifier 34, the frequency converter 35, and the demodulator 36 are built in the transmission / reception unit 4 of FIG. 1 and control reception. The arrows shown by broken lines in the figure show the flow of radio waves (signals) from the base unit 1 to the handset 2, and the arrows shown by solid lines show the flow of radio waves (signals) from the handset 2 to the base unit 1. Shows.

Next, the operation of the digital cordless telephone of this embodiment having the above-mentioned structure will be described based on FIGS. 5 and 6 with reference to FIGS. FIG. 5 is a sequence diagram showing a communication procedure for calling the child device from the parent device during a call with an external line in the child device, and FIG. 6 is a flowchart showing operations of the parent device and the child device. First, when it is necessary to call the child device 2 from the parent device 1, when the operation of calling the child device 2 from the parent device 1 (pressing the extension button) is performed (step 1), the main control unit 6 of the parent device 1 calls the child device to call. It is judged whether the machine 2 is in use (step 2), and if it is judged that the machine 2 is not in use, a normal extension calling process is performed (step 3). If it is determined in step 2 that the device is in use, the display unit 14 is instructed to display "in-use device" (step 4). Next, while maintaining a state in which the handset device is talking, that is, a state in which only voice data is created on the communication channel 5a, a "interrupt" is sent from the base device 1 to the handset device 2 using the user packet channel 5b. The protocol controller 5 is requested to transmit the control signal "(step 5). When the protocol controller 5 receives a request for transmitting the "interrupt" control signal from the main control unit 6, the protocol controller 5 creates the "interrupt" control signal in the user packet channel 5b, and the user packet channel 5b.
The control signal of "interruption" created in 1 is transmitted to the slave unit 2 through the transmitting / receiving unit 4 together with the voice data of the communication channel 5a. When the "interrupt" control signal is transmitted, the main control unit 6
Confirms from the protocol controller 5 of the handset 2.
It waits for reception of the control signal (step 6).

On the other hand, when the slave unit 2 receives the control signal of "interrupt" sent using the user packet channel 5b together with the voice data of the communication channel 5a, the protocol controller 5 of the slave unit 2 The main control unit 6 is notified that the control signal of "interrupt" has been received. Main control unit 6
Receives a notification that the control signal of "interrupt" is received from the protocol controller 5 (step 7), and requests the protocol controller 5 to transmit the control signal of "confirm" to the master device 1 (step 8). ), And commands the sounder 13 or the receiver 10 to output a voice signal indicating that an interrupt has occurred (step 9). When the protocol controller 5 of the child device 2 receives the request for transmitting the control signal of "confirmation" from the main control unit 6, it creates the control signal of "confirmation" in the user packet channel 5b, and in the user packet channel 5b. Created "confirmation"
Control signal is transmitted to the master unit 1 through the transmitting / receiving unit 4 together with the voice data of the communication channel 5a. Further, when the sounder 13 or the receiver 10 of the slave unit 2 receives a request for transmission of a voice signal from the main control unit 6 informing that there is an interrupt, it outputs a voice signal indicating the interrupt and uses the slave unit 2. Notify the person that there was an interruption.

As described above, in the digital cordless telephone of the present embodiment, when there is an "interruption" in which the master unit 1 calls the slave unit 2 during a call, the control data of this "interruption" is transmitted to the user packet channel 5b. Since it is sent by using it, the control signal of "interrupt" is not mixed with the voice during a call, and a comfortable call can be continued.

User packet channel 5b as described above
The transmission / reception operation using is also the same as when the call button 20a of the intercom 20 is pressed while the child device 2 is talking to the outside line 3 through the parent device 1.

Further, by adding the information of the text message as a parameter to the control signal of "interrupt", the text message from the base unit 1 can be displayed on the display unit 14 of the handset 2. As a method of designating a text message to be transmitted by the master device 1, an arbitrary text message may be input using the keypad of the master device 1, or several fixed messages may be prepared in advance. , It may be selected. By doing so, it is possible to clearly convey the message to the user who is talking with the outside line 3 by the cordless handset 2.

[0025]

As described above, according to the present invention, when a cordless handset is called by pressing the extension button of the base unit or the call button of the intercom while the handset communicates with an outside line, the handset and the handset Since the control signal is transmitted / received to / from the base station using the user packet channel, the handset can be called from the base unit or the intercom without affecting external line communication.
In addition, the handset is equipped with character display means, and message information is added as a parameter to the interrupt control signal transmitted using the user packet channel, so a simple message is sent from the base unit to the handset during a call. can do.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a system configuration of a digital cordless telephone according to an embodiment of the present invention.

FIG. 2 is an external view of a master unit and a slave unit of the digital cordless telephone according to the present embodiment.

FIG. 3 is an explanatory diagram of channel data created by the protocol controller according to the present embodiment.

FIG. 4 is a block diagram showing a specific system configuration of the digital cordless telephone according to the present embodiment.

FIG. 5 is a sequence diagram showing a communication procedure in the digital cordless telephone according to the present embodiment when the slave unit calls the slave unit during a call with an external line.

FIG. 6 is a flowchart showing the operations of the master unit and the slave unit of the digital cordless telephone according to the present embodiment.

FIG. 7 is a sequence diagram showing a communication procedure in the conventional analog cordless telephone when the slave is called from the master while the slave is talking to the outside line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 base unit 2 handset 3 external line 4 transmitter / receiver unit 5 protocol controller 5a communication channel 5b user packet channel 6 main control unit 6a user packet channel data judging unit 6b user packet channel using unit 7 microcomputer 14 display unit 15 extension button 20 doorphone 20a Call button

Claims (3)

[Claims] 1. A digital cordless telephone comprising a master unit connected to a digital or analog telephone line, and a slave unit connected to the master unit by a wireless line and transmitting control signals and voice signals to each other in a digital system. On the master unit side, when calling a slave unit that is in a call with an external line through the master unit, the usage method defined separately from the communication channel used for the call is used to specify the slave unit using any user packet channel. A means for transmitting an interrupt control signal for calling the machine is provided, and a confirmation control signal for notifying the master unit that the interrupt control signal from the master unit has been received is transmitted to the slave unit. A digital cordless telephone characterized in that it is provided with means for transmitting by using an arbitrary user packet channel defined separately from the communication channel being used. 2. The digital cordless telephone according to claim 1, wherein the interruption control signal for calling the slave unit is generated by pressing the extension button of the master unit or the calling button of the intercom. 3. A character display means is provided on the slave unit,
3. A digital cordless telephone according to claim 1 or 2, wherein information for displaying a character message on said character display means is added to an interruption control signal for calling a slave unit.