JPH0583343A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To eliminate the need for the extension of a new telephone line and the installation of the telephone set in the vicinity of a terminal equipment by connecting a slave set of the cordless telephone set not requiring wiring to the terminal equipment. CONSTITUTION:A radio control section 13 and a changeover switch 14 are incorporated in a slave set 11 and the changeover switch 14 throws the radio control section 13 to the position of a talking microphone, speaker or input output terminal 15. When the control section 13 is connected to the microphone and the speaker, the mode is set to the talking mode and when the control section is connected to the input output terminal 15, the mode is set to the data communication mode. Moreover, in this case, the configuration of the slave set 21 is formed entirely the same as that of the slave set 11. Furthermore, radio communication is attained among the master set 1 and the slave sets 11,21 by each antenna and the slave. sets 11,21 are communicated with other station via the master set 1. When the slave set 11 or 21 makes data communication with the other station via the master set 1, a relay 6 of the master set 1 is set in the external line mode and the slave sets 11,21 are set to the data communication 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 that can be used for data communication.

[0002]

2. Description of the Related Art Conventionally, when attempting to perform data communication through a telephone line using a terminal such as a personal computer or a word processor, a telephone line dedicated to communication for connecting to the terminal is newly provided or connected to the terminal. It was common to set a handset in the coupler and transmit / receive the modulated data.

[0003]

When a new telephone line dedicated for communication is installed, there is a drawback that installation cost and running cost are required. Further, in order to perform communication with a telephone normally used by using a coupler, the telephone has to be placed near the terminal. For this reason, the telephone cannot be installed in a free place, and when the indoor terminal of the telephone line and the terminal are located far from each other, the cord is exposed on the wall surface to impair the appearance.

Further, even if a cordless telephone handset is connected to a coupler, it cannot be set because it has a different shape.

An object of the present invention is to provide a cordless telephone which can be installed in a free place for data communication without newly providing a telephone line dedicated for communication or spoiling the appearance.

[0006]

According to the present invention, a child unit capable of wirelessly communicating with a parent unit connected to an external telephone line and capable of communicating with another station via the parent unit. In a cordless telephone equipped with a device, an input / output terminal connectable to a modem of a data processing device is provided in each of the parent device and the child device.

[0007]

According to the present invention, the main unit and the slave unit of the cordless telephone are provided with the input / output terminals connectable to the modem. When a modem is relayed to this input / output terminal or a terminal such as a personal computer with a built-in modem is connected, the wireless communication function of the cordless telephone enables data transmission / reception between the master unit and the slave unit. The base unit can be connected to other terminals via a telephone line.

As a result, it becomes possible to perform data communication with the outside line terminal by using the slave unit without using the coupler. Also,
By connecting the terminal device to the master device or another slave device, wireless data communication between the master device and the slave device or between the slave devices is also possible.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the structures of a base unit 1 and cordless handsets 11 and 21 of a cordless telephone according to an embodiment of the present invention.
The input / output terminals 7, 15 and 25 are connected to the terminals 2, 12, 2 respectively.
It is connected to the second modem terminal. The base unit 1 is connected to a public telephone line by a modular jack 8 and has a built-in wireless control unit 3, changeover switch 4, wired control unit 5, and relay 6. The wireless controller 3 is composed of a full-duplex wireless transceiver, and its input terminal and output terminal are connected to the common (C) terminal of the changeover switch 4. The changeover switch 4 manually switches the C terminal between the B side and the M side. B
A microphone and a speaker for communication are connected to the side, and the M side is connected to the input / output terminal 7. That is, the B side is in the call mode and the M side is in the data communication mode. Further, the wired control unit 5 includes a bidirectional amplifier and a power supply circuit,
Amplifies a call signal between the wireless control unit 3 and the telephone line. A relay 6 is connected to the wired control unit 5. The relay 6 is switched to the B side in the outside line mode or the M side in the extension line mode by the wire control unit 5. In the extension mode, a signal is not sent to the public telephone line, and power is supplied from the wired control unit 5 so that the main unit 1 main body operates without the power of the public telephone line. In the outside line mode, the wired control unit 5 is connected to the public telephone line via the relay 6.

The cordless handset 11 has a wireless control unit 13 and a changeover switch 14 built-in.
Switch to. When connected to a microphone or a speaker, the call mode is set, and when connected to the input / output terminal 15, the data communication mode is set. The configuration of the child device 21 is exactly the same as that of the child device 11. The master unit 1 and the slave units 11 and 21 can wirelessly communicate with each other through their respective antennas, and the slave units 11 and 21 can communicate with other stations via the master unit 1.

When the slave unit 11 or the slave unit 21 performs data communication with another station via the master unit 1, the relay 6 of the master unit 1 is in the outside line mode. The slave units 11 and 21 are switched to the data communication mode by the user. After that, the data communication is started when the transmission side terminal is set to the transmission mode and the reception side terminal is set to the reception mode.

When the slave unit 11 or the slave unit 21 and the master unit 1 perform data communication by extension, the relay 6 of the master unit 1 is in the extension mode, and both the changeover switches are switched to the data communication mode.

Also, when the slaves perform data communication by extension, the relay 6 of the master 1 is in the extension mode, and the changeover switches are both in the data communication mode to start transmission / reception.

As the terminal device, an OA device such as a personal computer, a word processor, a facsimile or an electronic notebook can be used.

FIG. 2 is a block diagram of a terminal side modem. The modem 30 is a C equipped with a ROM 31 and a RAM 32.
PU33 and modem IC34 connected to the CPU33
The gain exchange filter circuits 35, 36 and 37 are connected to the modem IC 34. Further, the gain exchange filter circuits 35 and 36 are connected to a changeover switch 38 such as a relay or an analog switch. The changeover switch 38 changes over a level filter or the like according to the signal characteristics of dialing and communication according to a signal from the CPU 33. First, the off-hook state is set by the slaves 11 and 21 or the master 1 and then the modem IC
Connects to the other party on the outside line by making an auto-dial call using a tone. After that, the changeover switch 38 is changed over so that a signal having a characteristic matching the communication signal is sent. In this way, it is possible to make a tone auto-dial call.

In this embodiment, the changeover switch is used to switch between the call mode and the data communication mode. However, the changeover switch is formed by using a three-pole jack (stereo jack) equipped with a mechanical switch at the input / output terminals. Can be omitted.

[0017]

According to the present invention, by connecting the cordless telephone handset which does not require wiring to the terminal, it is not necessary to add a new telephone line or place the telephone near the terminal.

[Brief description of drawings]

FIG. 1 is a diagram showing configurations of a master unit and a slave unit of a cordless telephone according to an embodiment of the present invention.

FIG. 2 is a block diagram of a terminal side modem.

[Explanation of symbols]

 1 Master unit 4 Changeover switch 7 Input / output terminal 11 Slave unit 14 Changeover switch 15 Input / output terminal 21 Slave unit 24 Changeover switch 25 Input / output terminal

Claims (1)

[Claims] 1. A cordless telephone having a master unit connected to an external telephone line and a slave unit capable of wirelessly communicating with the master unit and capable of communicating with another station via the master unit, A cordless telephone characterized in that an input / output terminal connectable to a modem of a data processing device is provided in each of the master unit and the slave unit.