JPH06169334A - Cordless telephone device - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a cordless telephone device having a plurality of cordless handsets, by which other cordless handsets can easily know that the cordless handset or one cordless handset is in a call. I am trying. In a cordless telephone device composed of a master unit and a plurality of slave units wirelessly connected to the master unit,
The slave unit, while waiting for a call, a call start signal detecting unit for detecting a call start signal transmitted from the master unit, and a call completion signal detecting unit for detecting a call completion signal transmitted from the master unit, A cordless telephone device, comprising: a display unit that displays a first display content when the call start signal is detected, and displays a second display content when the call completion signal is detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone device having a plurality of cordless handsets.

[0002]

2. Description of the Related Art FIG. 7 shows an example of a general system of a cordless telephone. As shown in the figure, this cordless telephone system uses a cordless telephone device composed of a master unit and three slave units wirelessly connected to the master unit, and the master unit is a terminal. It is connected to an AC 100V power source and a telephone line via the box.

FIG. 8 is a block diagram showing a general circuit configuration of a base unit and a handset of a cordless telephone. In the figure, the internal structure surrounded by a broken line is a circuit block of only the master unit, and the master unit is directly connected to the telephone line. For this reason, the child device cannot send a transmission signal to the telephone line unless it goes through the parent device wirelessly. As shown in the figure,
The general circuit configuration of the master unit and the slave unit is common except for an internal circuit configuration partially surrounded by a broken line, and it is possible to wirelessly communicate with each other via a receiving antenna and a transmitting antenna. Note that detailed description of each circuit unit is omitted.

FIG. 9 is an explanatory diagram showing a conventional call response sequence between a master and its slaves, and FIG. 10 is a conventional incoming call between the master and three slaves 1-3. It is explanatory drawing which shows a response sequence. Generally, data is exchanged wirelessly between a master and a slave. The modulation method is an MSK modulation method using a subcarrier. Further, there are two channels for exchanging such data, that is, a control channel and a communication channel, each having a different frequency. 9 and 10, a horizontal arrow indicated by a broken line indicates a data flow through the control channel, and a horizontal arrow indicated by a solid line indicates a data flow through the communication channel. As shown in both figures, in the communication between the master unit and the slave unit, when a call is made or an incoming call is made, data is first exchanged via the control channel, and then the call mode via the call channel is entered. There is. Also, the master unit sends a line connection signal, a dial signal, and a line disconnection signal to the exchange.

FIG. 9 shows a sequence for making a call from the handset 1. The outline of this sequence is as follows. That is, when the handset pushes the call button (1), a call signal is sent to the base unit (2), and when a response signal is returned from the base unit (3), it moves to the call channel (4). . Next, when the master unit confirms the movement of the call channel of the slave unit (5), it sends a voice ON signal (a call start signal) (6) and connects the telephone line (7). As a result, the child device can press the dial. Then, when the pressing of the dial of the child device is completed (8), a dial signal is sent to the parent device (9),
Enter call mode (10). When the call ends and the off button is pressed (11), an on-hook signal is sent to the master unit (12), and the master unit receiving this signal disconnects the line (13),
Both the child device 1 and the parent device enter the standby state again (14).

[0006] FIG. 10 shows a sequence in the case where a telephone call is received from the outside and a call is made by the handset 1. The outline of this sequence is as follows. That is, when the master unit detects a call signal (1), the master unit sends an incoming call signal to all the slave units 1 to 3 (2), and when each slave unit responds to it (3), the communication channel Move to (4). At that time, the master unit performs ringer detection according to the calling signal (5) and sends ringer data to all the slave units 1 to 3 (6). Responsive to this, each child machine generates a ringer (that is, makes a ringing sound) (7). When the handset 1 is selected and its call button is pressed (8), the handset 1 sends an off-hook signal to the base unit (9). At that time, the slave units 2 and 3 respectively send a ringer response signal to the master unit (10). The master unit knows that the slave unit 1 is used for a call by the signals of the slave units 1, 2, and 3 sent (11), and the slave unit 1 enters the call mode with respect to the slave units 1, 2, and 3. Notify me (12) and connect the telephone line (13). This causes the handset 1 to enter the call mode (1
4). When the call to handset 1 ends and the off button is pressed (15), handset 1 sends an on-hook signal to base unit (1
6) Then, the master unit receiving this disconnects the telephone line and ends the call (17), and both the master unit and the slave unit 1 enter the standby state (18). The handset units 2 and 3 have already been in the standby state since the time point when it was found that the handset unit 1 was used for a call (19).

[0007]

However, according to the call origination response sequence (FIG. 9) between the base unit and the handset, the handset units 2 and 3 are both in the standby state, and the respective handset units are in the standby state. Unless the call button is pressed in
Is currently in a call and cannot determine that he is not in a usable state.

According to the incoming call sequence (FIG. 10) between the base unit and the handset, although the handset 2 and 3 can determine that the handset 1 is used for a call, both of them are immediately in a standby state. As a result, the mobile device 1 cannot make a decision as to when the mobile device 1 is currently in a call and is ready for use. The present invention has been made in view of the above circumstances, and a cordless telephone device having a plurality of slave units that allows other slave units to easily know that the master unit or any of the slave units is in a call. Is intended to provide.

[0009]

In order to achieve the above object, the present invention provides a cordless telephone device comprising a master unit and a plurality of slave units wirelessly connected to the master unit. A call start signal detecting means for detecting a call start signal transmitted from the master unit, a call completion signal detecting means for detecting a call completion signal transmitted from the master unit, and the call start. Display means for displaying the first display content when the signal is detected, and for displaying the second display content when the call completion signal is detected.

[0010]

According to the above structure, the cordless telephone device is composed of the master unit and the plurality of slave units wirelessly connected to the master unit, and one slave unit connects to the line via the master unit. When a call is connected to the other handset, all the remaining slave units are in a standby state and are in a state in which a call cannot be made.

In this standby state, all the remaining slave units which are not in a call detect the call start signal transmitted from the master unit by the call start signal detecting means. continue,
When the call start signal is detected, the display means displays the first display content. Further, when one of the slaves finishes the call, all the remaining slaves that are not in the call detect the call completion signal transmitted from the master by the call completion signal detecting means. Subsequently, when the call completion signal is detected, the second display content is also displayed by the display means.

As a result of the above, when trying to use any one of the remaining slave units that were not in a call, it is possible to visually confirm from the display result by the display means that one of the slave units or the master unit is busy. Can be clearly recognized,
Further, since it is possible to clearly recognize that the call is completed, that is, the line is disconnected, it is possible to make a call immediately.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cordless telephone device according to the present invention will be specifically described below with reference to the drawings. Figure 1
FIG. 1 is a perspective view showing an external appearance of a cordless phone device according to an embodiment of the present invention. The cordless telephone device according to the present invention is composed of a master unit and a plurality of slave units wirelessly connected to the master unit, similarly to the general system configuration shown in FIG. In addition, the LED 2 is attached to the rear surface of the mouthpiece of the handset 1 in each child device. And
When the LED 2 is turned on, it is possible to know that the base unit or another handset unit is in a call and the telephone is currently unavailable.

FIG. 2 is a wiring diagram of the LED 2 shown in FIG. The LED 2 is driven by the microcomputer 3 provided in each child device. The microcomputer 3 is shown in FIG.
It corresponds to the "microcomputer" in the circuit diagram of the slave shown in. FIG. 3 is an explanatory diagram showing a transmission data format on the base unit side of the cordless telephone device according to the present invention. The transmission data format on the slave side is the same as the conventional one and will not be changed, and therefore its description is omitted. As shown in the figure, the data format transmitted from the master unit to the slave unit is a tuning bit (16 bits),
Frame sync signal (16 bits), call code (ID code for each system) (25 bits), correction bit (12 bits), ringing section (3 bits), speech channel (8 bits), tone line / A pulse line (1 bit), control data (7 bits), call section (4 bits), and LED display (4 bits) for the slave unit are sequentially assigned. Incidentally, as the control data, data called a call completion signal (described later) is newly added.

FIG. 4 is a flowchart showing a control procedure on the handset side in the cordless telephone device according to the present invention. First, it is determined whether a call is made, a call is received, or a standby state (S1). If a call is made, a call process is performed (S2), and a call mode is set (S4). In the case of an incoming call, the incoming call process is performed (S3), and the call mode is set (S3).
4). Furthermore, when the call is completed (Yes in S5)
In the case of), an on-hook signal is sent to the base unit (S
6) The standby mode is set (S7), and the process returns to S1.

On the other hand, in the standby state in S1, the voice-on signal transmitted from the master unit is detected (S8). When a voice-on signal is detected (S
If Yes in 8), the LED is turned on (S
9). Furthermore, when the call completion signal transmitted from the master unit is detected (Yes in S10), the LED
Is turned off (S11), the standby mode is set (S7), and the process returns to S1.

FIG. 5 is an explanatory diagram showing a part of a calling response sequence between the base unit and the handset of the cordless telephone device according to the present invention. Specifically, it is a calling response sequence when the handset 1 is in a call state and the handset 2 is not in use, and a sequence for displaying an LED provided in the handset 2 is I am joining. Note that the sequence before the voice ON signal transmission process of the parent device shown in the drawing is the same as that of the conventional example shown in FIG.

The outline of this sequence is as follows. When a call is made from the child device 1, a voice ON signal is sent from the parent device not only to the child device 1 but also to the child device 2 (1),
The cordless handset 2 detects a voice ON signal (2). Then child device 2
Turns on the LED to display that the telephone is in an unusable state (3). Then, when the call of the handset 1 ends and the base unit disconnects the call line (4), the base unit confirms the control channel is vacant and switches (5), and sends a call completion signal to the handset 2 (6), Enter standby mode (7). The handset 2 detects the call completion signal, turns off the LED (8), and enters the standby state (9). Although not shown in the figure,
The above operation is performed in the same manner even when the child device 3 exists.

FIG. 6 is an explanatory view showing a part of an incoming call response sequence between the master unit and the slave unit of the cordless telephone device according to the present invention. More specifically, this is an incoming call response sequence in the case where the cordless handsets 2 and 3 are in an unusable state when a telephone call is received from the outside and the cordless handset 1 makes a call. A sequence for displaying the LEDs has been added. It should be noted that the sequence before the slave unit 1 voice ON signal transmission process of the master unit shown in FIG.
It is omitted because it is similar to the conventional example shown in FIG.

The outline of this sequence is as follows. That is, as with the case of making a call, the slave unit 1 voice is turned on from the master unit.
When the signal is received (1), cordless handsets 2 and 3 turn on each LED.
Then, it is displayed that the telephone is unavailable (2). When the call of the handset 1 ends and the base unit disconnects the call line (3), the base unit confirms the control channel is vacant and switches (4), and sends a call completion signal to the handset 2 and 3 (5). , Enter standby mode (6). When the handset units 2 and 3 detect the call completion signal, they turn off each LED (7) and enter the standby state (8).

In this way, it is possible to know that the other handset or the base unit is in a call during the call origination or the call arrival, by the handset which is in the unusable state. It is possible to easily notify the user of the fact by the lighting display of the LED. Also, such LE
If D is made to blink at a cycle of about 1 second, an even more effective display is possible.

[0022]

According to the present invention described above, a plurality of slave units are
When separately arranged and used from the parent device, it becomes possible to clearly determine that one child device is in a call by the display means in the other child device. For this reason,
There is no need to perform a troublesome operation or work such as pressing the call button many times to confirm such a call, or searching for a person who is talking and confirming that the person has ended the call. Since it becomes possible to immediately know that the mobile device is in a call enabled state, the usability is greatly improved.

Moreover, since it is only necessary to newly provide a display element such as an LED as a circuit component and a slight change in the control software is required, there is an additional effect that the manufacturing cost can be kept low.

[Brief description of drawings]

FIG. 1 is a perspective view showing the external appearance of a cordless telephone device of a cordless telephone device according to the present invention.

FIG. 2 is a wiring diagram of the LED shown in FIG.

FIG. 3 is an explanatory diagram showing a transmission data format on the master side of the cordless telephone device according to the present invention.

FIG. 4 is a flowchart showing a control procedure on the handset side in the cordless telephone device according to the present invention.

FIG. 5 is an explanatory diagram showing a part of a call response sequence between a base unit and a handset of the cordless telephone device according to the present invention.

FIG. 6 is an explanatory diagram showing a part of the incoming call response sequence.

FIG. 7 is a general system configuration example of a cordless telephone.

FIG. 8 is a block diagram showing a general circuit configuration of a base unit and a handset of a cordless telephone.

FIG. 9 is an explanatory diagram showing a conventional call response sequence between a master unit and a slave unit.

FIG. 10 is an explanatory diagram showing a conventional incoming call response sequence between a master unit and three slave units 1 to 3;

[Explanation of symbols]

 1 Handset 2 LED 3 Microcomputer

Claims (1)

[Claims] 1. A cordless telephone device comprising a master unit and a plurality of slave units wirelessly connected to the master unit, wherein a call start transmitted from the master unit while the slave unit is waiting for a call. A call start signal detecting means for detecting a signal, a call completion signal detecting means for detecting a call completion signal transmitted from the same parent device, and a first display content is displayed when the call start signal is detected to complete the call. A cordless telephone device, comprising: a display unit that displays a second display content when a signal is detected.