JP3255747B2 - Cordless telephone handset - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone handset that can be connected to a public wireless telephone base station and a home wireless telephone base station by wireless communication.

[0002]

2. Description of the Related Art In recent years, a cordless telephone handset has been widely used with its convenience and economy. Hereinafter, a conventional cordless telephone handset will be described.

Generally, a public wireless telephone base station (hereinafter referred to as a second
A selection switch for selecting the first and second base units is provided to a slave unit that can be connected to a home wireless telephone base unit (hereinafter, referred to as a first base unit) by wireless communication with a home wireless telephone base unit (hereinafter referred to as a first base unit). The system is provided so that the user can operate according to the situation of the place of use and the distance of the call. Make a call by connecting to the main unit and place it in the nearest public place if it is not possible or difficult to connect to the first main unit by wireless communication at a location away from the first main unit. The telephone is connected to the second parent device that has been connected.

[0004]

However, in the above-described conventional configuration, if the user calls back the child device after using the second parent device and makes a call again, the selection switch is set to the second parent device in the previous use. If the selection switch has not been returned to the first master unit side since the
It is often the case that a connection is made to the base unit and an expensive line is used, and it is necessary to always switch to the target base unit with a selection switch, and in any case, such a troublesome operation is required. It is difficult in daily life to manage the operation without neglect, and furthermore, if the operation is neglected, there is a problem that the above-mentioned telephone charge falls into connection to the expensive second base unit. I was

An object of the present invention is to provide a cordless telephone handset compatible with a plurality of base units which is preferentially connected to a home base unit, taking the above conventional problems into consideration.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides both a first main unit at home and a second main unit outdoors.
A handset that is wirelessly connectable, comprising a first master and a second master
And selection switching means for selecting one of, placed on the first base unit
A charging means for charging the internal battery by receiving from the first base unit is in the state of being, detects that said charging means is being charged
And controls the selection switching means to forcibly select the first master unit.
And the selection switching means is not connected to the first master unit.
Means for controlling the main unit to be selected with priority.
It is characterized by having.

[0007]

The cordless telephone handset of the above construction is the first in a home.
When the built-in battery is charged by being placed on the master unit, the charge detection circuit controls the selection switching unit via the control unit to select the first master unit, and automatically gives priority to the connection of the first master unit. It will have.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In the figure, 1 is a cordless telephone handset, 1
Reference numeral 1 denotes a first master unit installed at home. The slave unit 1 includes a slave unit transmitting / receiving antenna 10, and the slave unit transmitting / receiving antenna 10
, A receiver 2 and a transmitter 3 connected to the transmitter / receiver circuit 5, a rechargeable battery 9, a charge detection circuit 8 for detecting the charging of the battery 9, and a power receiver connected to the charging circuit. The terminal 4 is provided. Further, a control unit 7 for controlling the transmission / reception circuit 5 and a master unit selection switch 6 connected to the control unit 7 are provided. The charge detection circuit 8 controls the wireless unit to stop operating via the control unit 7 during charging. At the same time, the main unit selection switching means (not shown) is controlled to forcibly select the first main unit.

On the other hand, the first base unit 11 has a base unit transmission / reception antenna 14, and a mounting and holding unit 12 on which the slave unit 1 can be fitted and mounted is formed on the upper surface of the body. On the inner bottom, a charging terminal 13 connected to the charging terminal 4 of the slave 1 is provided.

In the above configuration, the child device 1 is operated by operating the parent device selection switch 6 so that the first main device 11 installed in the home can be used.
And an external second master unit (not shown) is selected and connected.
Next, when the slave 1 is placed on the first master 11, the master 11 is connected to the slave 1 via the charging terminal 13 and the power receiving terminal 4.
Battery 9 is charged. During this charging, the charging detection circuit 8 detects that charging is in progress, stops the operation of the wireless unit of the slave 1 via the control unit 7, and forcibly sets the master selection switching means to the first master. 11 is selected.

Referring to FIG. 3 in more detail,
In step 1, a charge determination is started. In step 2, it is determined that charging is in progress. If charging is not performed, in step 4, the master unit is not switched and the master unit selected last by the user is selected. If the battery has been charged, the first master unit is selected in step 3, the connection to the master unit is started in step 5, and it is determined in step 6 whether or not the first master unit is connected to a predetermined master unit. To start a telephone call and start making a telephone call. If the telephone is not connected to a predetermined parent device in step 6, the selection of the parent device is automatically switched in step 7 and the process returns to step 6 to start a telephone call through the same steps. be able to. It is also possible to forcibly switch between the first and second master units with the master unit selection switch 6.

As described above, the cordless telephone corresponding to a plurality of base units according to the present embodiment selects a second base unit and makes a telephone call when it is sufficiently far away from the first base unit outdoors, as in the prior art.
In the room, a call can be made using the first master unit 11,
When the mobile phone is placed on the first base unit 11, the handset 1 is charged, and the first base unit 11 is automatically selected. Also, the user can preferentially select the first base unit 11 to make a call and connect to the second base unit, so that the call charge can be reduced.

[0013]

As is apparent from the above description of the embodiment, the present invention allows a cordless telephone handset to be taken home from home and charged to a home where the telephone is connected to an inexpensive line. Priority for the parent machine for
If you take your handset away from home, you will be automatically connected to the public base when you are in an area where you cannot talk because you are away from your home base. This has the advantage that the user is not bothered by worrying about it, and that there is no erroneous operation such as being preferentially connected to the public base unit having high call charges.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a cordless telephone according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a slave unit of the cordless telephone.

FIG. 3 is a flowchart for explaining the operation of the cordless handset.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cordless telephone handset 2 Handset 3 Transmitter 4 Power receiving terminal 5 Transmission / reception circuit 6 Base unit selection switch 7 Control part 8 Charge detection circuit 9 Battery 10 Handset transmission / reception antenna 11 Base unit 12 Mounting / holding unit 13 Charging terminal 14 Main unit transmitting / receiving antenna

Claims (1)

(57) [Claims] 1. A both the first master unit and the second base unit outdoor in the home
A connectable handset by radio, a selection switching means for selecting one of the first master unit and the second base unit, is in a state of being placed on the first base unit and the power receiving from the first base unit Charging means for charging the built-in battery, and detecting that the charging means is being charged and switching off the selection.
Control means for selecting the first master unit and forcing the first master unit to
The selection switching means gives priority to the first master
A cordless telephone handset, comprising: means for controlling to be in a selected state .