JPH06204941A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To improve the facilitation for the user of a slave device by transmitting the power failure information to the slave device from a master device while a back-up function is working against the power failure. CONSTITUTION:A cordless telephone master device 1 includes a power supply part 3 connected to a commercial power supply, a back-up part 4, a control circuit 5, a data transmission circuit part 6, a radio connection part 7, etc. Meanwhile a cordless telephone slave device 2 contains a battery. When the feeding system is changed to a back-up system from a normal system, the part 3 outputs a power failure information signal to the part 5. Then the part 5 instructs the part 6 to output the power failure information signal to the part 7. Receiving the power failure signal, the part 7 transmits by radio the power failure information signal to the device 2 during the back-up feeding mode. A built-in battery of the device 2 supplies the power to each part regardless of the feeding state of the device 1. So that the device 2 can hear or view the power failure information signal received by radio in a busy mode or a call waiting mode.

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 for transmitting power failure information from a base unit to a handset during operation of the backup function due to a power failure to improve convenience of handset users. It is a thing.

[0002]

2. Description of the Related Art Conventionally, in a cordless telephone device having a cordless telephone master unit (hereinafter, master unit) having a backup function in case of power failure and a cordless telephone slave unit (hereinafter, slave unit) wirelessly connected to the cordless telephone master unit, a power failure occurs With this, the backup function starts operating. The backup function is maintained for a predetermined backup time determined by the capacity of a battery used as a backup power source, for example.

[0003]

In the above prior art, for example, when a power failure occurs during a call, the backup function and the built-in battery of the child device cut off the power supply to the parent device. Since the call is maintained in the slave unit for the above-mentioned predetermined backup time, for example, a slave user who is using the slave unit outdoors does not have a normal call or a backup function at the time of power failure. It is not possible to determine whether or not a power failure has occurred on the base unit side. As a result, the call is suddenly cut off when the predetermined backup time is completed, and the user of the cordless handset does not know the cause of the disconnection of the call.

According to the present invention, during the operation of the backup function due to a power failure, information about the power failure is transmitted from the master unit to the slave unit,
The purpose is to enable the user of the child device to recognize the power failure (power supply state of the parent device).

[0005]

To this end, a cordless telephone device of the present invention comprises a cordless telephone master unit having a backup function in case of power failure, and a cordless telephone slave unit wirelessly connected to the cordless telephone master unit. In the cordless telephone device including the above, during the operation of the backup function due to a power failure, the information about the power failure is transmitted from the cordless phone base unit to the cordless phone handset.

[0006]

According to the present invention, for example, during a call, while the backup function is operating in the cordless telephone master unit due to a power failure, information about the power failure is transmitted from the cordless telephone master unit to the cordless child unit. The slave user is
Based on this information, it is possible to recognize in advance that a power failure has occurred on the base unit side and the call that is currently maintained will be disconnected after the completion of the predetermined backup time, which will be convenient for the handset device user. improves.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a first embodiment of a cordless telephone device of the present invention, in which 1 is a cordless telephone master unit (parent device) and 2 is a cordless telephone child device (child device).
Indicates. The base unit 1 is usually a power supply unit 3 connected to a commercial power supply, a backup unit 4 charged while the commercial power supply is being supplied by the power supply unit 3, and a power supply unit 3 or a control circuit unit receiving power supply from the backup unit 4. 5, data transmission circuit section 6
And a wireless connection unit 7 and the like. In addition, the cordless handset 2 is
It has a built-in battery (not shown) to make it portable.

The power supply unit 3 supplies power to each unit while charging the backup unit 4 while the power is normally supplied from the commercial power supply, and the power supply from the commercial power supply is cut off due to a power failure and the normal power supply system is used. When the power supply is switched to the backup power supply, the power failure signal is output to the control circuit 5. The backup unit 4 includes, for example, a rechargeable battery (battery), and is continuously charged during normal power supply. When the power supply from the commercial power supply is cut off due to a power failure, the control circuit unit 5 and the data transmission circuit unit are provided. 6 and the wireless connection unit 7, etc. are supplied, but unlike the normal supply, the power supply can be continued only for a predetermined backup time determined by the capacity of the battery.

The control circuit section 5, the data transmission circuit section 6 and the wireless connection section 7 are constituent elements for exhibiting the functions of an ordinary cordless telephone, and the main unit 1 is normally fed.
To control the call in the mobile phone 2 or via wireless transmission
In the case of a power failure, the backup function ensures the operation of the base unit 1 during the predetermined backup time. Therefore, in addition to the call control, the following power failure information transmission control is also performed. .

That is, when the power supply from the commercial power supply is cut off by the power failure and the power supply system is switched from the normal power supply to the backup power supply, the power supply section 3 outputs a power failure signal to the control circuit 5 and the control which receives the power failure signal. The unit 5 outputs to the data transmission circuit unit 6 a command signal for outputting an information signal related to the power failure (hereinafter, power failure information signal) to the wireless connection unit 7, and receives the power failure information signal from the wireless connection unit 7. Wirelessly transmits the power failure information signal to the slave 2 at the time of switching to the backup power supply.

On the other hand, the handset 2 has a built-in battery for supplying electric power to each part without depending on the power supply state of the base unit 1, and when the base unit 1 is busy or waiting for a call, the base unit 1 Since it continues to operate even when a power failure occurs, the power failure information signal wirelessly transmitted as described above can be audibly displayed as a message or alarm sound on a built-in speaker (not shown), for example. When a child device having a display is used as the child device 2, the power failure information signal wirelessly transmitted to the display may be visually displayed as a message.

Therefore, the audible or visual display of the power failure information signal allows the user of the slave unit to disconnect the currently maintained call after the completion of the predetermined backup time (and after the call is disconnected, for example, when the call is in progress. Can operate with the built-in battery, but it can recognize in advance that the slave unit will be substantially unusable until the power failure of the master unit), and the slave unit user can understand the cause of the call disconnection. It cannot be left without it.

In the above-mentioned embodiment, the case of the most basic configuration having one cordless telephone master unit 1 and one cordless telephone slave unit 2 has been described, but the present invention is not limited to this. For example, a configuration in which a plurality of cordless telephone slave units 2 are used for the cordless telephone master unit 1, a configuration in which the cordless telephone master unit 1 is replaced by a main device that does not have a call function, or a cordless telephone master unit is used. 1
Alternatively, a cordless telephone cordless handset connection device having only a wireless connection function for the cordless telephone cordless handset may be used.

[0014]

As described above, according to the present invention, during a call, for example, while the backup function is operating in the cordless telephone master unit due to a power failure, the cordless cordless handset is provided with information regarding the power failure. Since it is transmitted from the device, based on this information, the child device user knows in advance that a power failure has occurred on the parent device side and that the currently maintained call will be disconnected after the completion of the predetermined backup time. It is possible to improve the convenience of the child device user.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a first embodiment of a cordless telephone device of the present invention.

[Explanation of symbols]

 1 cordless telephone master unit (master unit) 2 cordless telephone slave unit (slave unit) 3 power supply unit 4 backup unit 5 control circuit unit 6 data transmission circuit unit 7 wireless connection unit

Claims (1)

[Claims] 1. A cordless telephone device comprising a cordless telephone master unit having a backup function at the time of a power failure and a cordless telephone slave unit wirelessly connected to the cordless telephone master unit, wherein the backup function is operating due to a power failure, The cordless telephone master unit is configured to be transmitted to the cordless telephone slave unit.
Cordless telephone device.