JPH0451742A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To easily connect a data terminal equipment to a telephone line by providing a changeover switch between a speech circuit and a transmitter- receiver circuit of a slave set of a cordless telephone set and connecting a connector to a signal coupling circuit. CONSTITUTION:A slave set 2 and a data terminal equipment 6 such as a personal computer are connected such that an output terminal of a MODEM 9 and a connector 5 are interconnected through a cable in the case of the data terminal equipment 6 to which a printed circuit board with the built-in MODEM 1 is loaded, and the terminal equipment 6 is connected to the connector through a cable via a separately mount MODEM 9 in the case of the terminal equipment 6 in which no MODEM 9 is integrated. Since the slave set 2 and a master set 1 are connected via a radio line 8 by connecting a speech circuit 22 to a signal coupling circuit 4 through a changeover switch 3, data communication is realized easily through a telephone line 7.

Description

[Detailed Description of the Invention] [Summary] The object of the present invention is to easily connect a data terminal device to a telephone line using a wireless line, especially regarding a cordless telephone handset, and one of the input and output terminals is connected to the telephone line. A cordless telephone comprising a base unit, the other end of which is connected to a wireless line, and a handset, one of whose input/output ends is connected via the wireless line of the base unit, the handset having one end connected to the wireless line. A connected radio circuit, a communication circuit connected to the radio circuit, a transmitting/receiving circuit connected to one side of the communication circuit, a signal coupling circuit connected to the other, and a signal coupling circuit connected to the communication circuit via a changeover switch. When making a call, the handset has a changeover switch that connects the transmitting/receiving circuit to the speaking circuit, and connects the data terminal device to the connector. When connected to perform data communication, the changeover switch is configured to change over so that the signal coupling circuit is connected to the communication circuit.

[Industrial application field]

The present invention relates to a cordless telephone, and more particularly, to a cordless telephone capable of connecting a data terminal device to a telephone line using a wireless line.

2. Description of the Related Art Recently, data communications such as personal computer communications that connect personal computers (PCs) have become widespread, and data transfer via telephone lines has become common.

On the other hand, a cordless telephone is a telephone that replaces part of the subscriber line of the general subscriber telephone network with a wireless line and can be carried and used freely around the house. ) and can make wireless calls with a cordless phone (handset).

Cordless telephones are said to become more popular in the future due to the convenience of being able to carry them freely, unlike traditional telephones.
It would be very convenient if data communication could be done easily using this cordless telephone.

[Conventional technology] FIG. 3 is a configuration diagram of an example of a cordless telephone.

In the figure, the cordless telephone is composed of a base unit 1 and a handset 2.

The base unit 1 is a device that is connected to a wired telephone line 7 on one side and connected to the slave unit 2 on the other side via a wireless line 8. The base unit 1 is a device that does not have the function of connecting the telephone line 7 and the wireless line 8, and has built-in telephone functions. There is something.

The handset 2 is a handset that is connected to the conventional telephone main body by a machine string, and includes functions such as a telephone transmitter and receiver, a communication circuit, a dial, and a ringer, as well as a wireless line 8.
The handset 2 has an internal connection function with the base unit 1, and can be easily carried.

By the way, in order to connect a data terminal device to a data transmission path and transfer data, a data line termination device such as a modem (modulator/demodulator) must be interposed between the transmission path and the data terminal device such as a personal computer. Thus, the signal condition interface of the data terminal device and the signal condition interface of the transmission path are mutually converted.

FIG. 4 is a block diagram of an example of data communication using a conventional telephone.

In the figure, 43 is a bidirectional analog signal, 6 is a data terminal device, 7 is a telephone line, 9 is a modem, 10 is an acoustic coupler, 11
is a telephone.

In the figure, a data terminal device 6 is, for example, a digital data processing device such as a personal computer.

On the other hand, the telephone line 7 is 300-3,400Hz band 0
) is a transmission path using lines.

Therefore, a modem 9, which is a type of data line termination device, is interposed between the data terminal device 6 and the telephone line 70, and the digital signal 44 of the data terminal device 6 is transferred to a bidirectional analog signal 43 suitable for the telephone line 7. Conversion (modulation) and inverse conversion (demodulation) are performed.

The digital signal 44 of the data terminal device 6 is, for example, R3-
232C is transferred to the modem 9 using a serial interface compliant with the R3-423 standard.

This digital signal 44 is sent to the telephone line wA by the modem 9.
The signal is modulated into a bidirectional analog signal 43 compatible with the signal interface of 7 and transferred to the acoustic coupler 10. Then, by setting the handset 11a of the telephone 11 to the acoustic coupler lo, this bidirectional analog signal 43 can be transferred to the telephone line 7 as a transmission signal 42 via the telephone 11.

On the other hand, the receiving signal 41 transferred from the other party through the telephone line 7 is transmitted to the handset 11a of the telephone 11 =+acoustic converter 10===O transmission path of the two-way analog signal 43Moaning modem 9ScreamingAn analog modulated digital signal 44 transmission path to the data terminal device 6, where the modem 9 demodulates the bidirectional analog signal 43 into an analog-modulated digital signal 44.

In this way, the data terminal devices 6 such as personal computers can communicate with each other via the telephone line 7, such as personal computer communication.

[Problems to be Solved by the Invention] However, for example, in an ordinary residence (home), even if there is a telephone dedicated for data communication, the data terminal device such as a personal computer and the telephone are often separated.

Therefore, when communicating with a personal computer, it is complicated to carry the data terminal device close to the telephone, to bring the telephone close to the data terminal device, or to connect the two with a long cable.

In addition, while data terminal devices such as personal computers have become book-sized, have built-in modems, and are small enough to be carried indoors by inserting a card, making them easier to carry, large-sized acoustic couplers It was inevitable that the device would be used next to a telephone.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cordless telephone that allows a data terminal device to be easily connected to a telephone line using a wireless line.

[Means to solve the problem]

The problem mentioned above is that the main device has one input/output end connected to a telephone line and the other end connected to a wireless line, and the other end has a slave device connected via the wireless line of the main device. The cordless telephone has a wireless circuit connected to a wireless line, a communication circuit connected to the wireless circuit, and a transmitter connected to one of the communication circuits via a changeover switch. The handset has a signal coupling circuit connected to the receiving circuit and the other, and a connector connected to the signal coupling circuit and forming the other input/output terminal. The changeover switch changes so that the circuit is connected, and when a data terminal device is connected to the connector and data communication is performed, the changeover switch changes so that the signal coupling circuit is connected to the communication circuit. The solution is a cordless telephone configured as follows.

[Function] When data communication is carried out between data terminal devices such as personal computers through a telephone line, the conventional method using a telephone is complicated because it involves connecting modems, acoustic couplers, etc. In the present invention, a cordless telephone is used.

A changeover switch is provided between the communication circuit and the transmission/reception circuit of the handset of the cordless telephone, so that the communication circuit can be branched and switched to a transmission/reception circuit and a signal coupling circuit between the communication circuits. A connector is connected to the signal coupling circuit so that it can be connected to an external data terminal device.

On the other hand, the signal coupling circuit mutually converts two unidirectional analog signals, a receive signal input from the base unit through the communication circuit and a transmit signal output to the base unit, and one bidirectional analog signal. It is designed to have a conversion function.

In this way, when making a normal phone call, all you need to do is change the changeover switch to the call circuit, transmitting/receiving circuit, and when connecting a data terminal device such as a personal computer to the connector for personal computer communication, By switching the changeover switch from the call circuit to the signal coupling circuit, the data terminal device can be connected to the telephone line via a wireless line between the slave unit and the base unit.

In this way, if you carry the easily portable cordless phone handset to the vicinity of the data storage device and connect it with a cable,
To realize data communication via a telephone line without any complicated time and effort.

(Embodiment) FIG. 1 is a configuration diagram of an embodiment of the present invention, and FIG. 2 is an enlarged view of the main part of FIG. 1.

In the figure, 1 is a base unit, 2 is a slave unit, 21 is a wireless circuit, 22 is a communication circuit, 23 is a transmitting/receiving circuit, and 3 is a switch 1. .

4 is a signal coupling circuit, 4 is a receiving signal, 42 is a transmitting signal, 43 is a bidirectional analog signal, 5 is a connector, 6 is a data terminal device, 7 is a telephone line, and 8 is a wireless line.

One of the input and output ends of base unit 1 is connected to the rosette of telephone port vA7 of the subscriber line. Also, from the other input/output end, there is a wireless line 8 called a low power type or weak radio wave type.
The handset 2 is connected by this.

The handset 2 has the functions of a normal telephone built into a housing that is very similar to a handset of a normal telephone, and it communicates wirelessly with the base unit 1. It also has a function for sending and receiving analog signals via the line 8.

In FIG. 2, the handset 2 connects the wireless line 8 to the wireless circuit 2.
1 and a communication circuit 22, a changeover switch 3 is provided so that the signal can be branched into two branches.One side can be connected to a transmission/reception circuit 23, and the other side can be connected to an external signal via a signal coupling circuit 4 and a connector 5. It is now possible to connect.

When making a normal phone call, the phone call circuit 22
It is connected to a transmitting/receiving circuit 23 having a speaker and a microphone by a changeover switch 3, and is used as a normal cordless telephone.

On the other hand, the signal coupling circuit 4 outputs the analog reception signal 41 inputted from the communication circuit 22 to the connector 5 as a bidirectional analog signal 43, and outputs the bidirectional analog signal 43 inputted from the connector 5 to the analog transmission It has a function of outputting to the communication circuit 22 as a speech signal 42.

In other words, the signal coupling circuit 4 has a function of mutually converting and coupling two unidirectional analog signals 41 and 42 input/output and one bidirectional analog signal 43.

For the connector 5, a modular connector is used, which is small and lightweight, has a thin cable, and is easy to use, and which is often used in telephone-related equipment. A modular jack is provided on the casing of the handset 2, and the handset 2 is connected to the outside via a cable with a modular plug.

The connection between the data terminal device 6 such as a personal computer and the handset 2 is as follows.
If the data terminal device 6 has a built-in modem 9 or a card for the modem 9 can be inserted, connect the output terminal of the modem 9 and the connector 5 with a cable, and if the data terminal device does not have the modem 9 built-in, 6, the cable is connected to the connector 5 via a separate modem 9.

If the telephone call circuit 22 is connected to the signal coupling circuit 4 by the changeover switch 3, the handset 2 and the base unit 1 are connected by the wireless line 8, so data communication can be easily achieved through the telephone line 7. be done.

This can be easily achieved by carrying a cordless phone handset and connecting it to a data terminal device using a cable.

As a result, the complexity of using an acoustic coupler or carrying a data terminal device to the side of the telephone is eliminated, and the present invention is useful for the further development of personal computer communication using public telephone networks, which is expected to become more widespread in the future. This greatly contributes to the diversification of the functions of cordless telephones.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of an embodiment of the present invention, Figure 2 is an enlarged view of the main parts of Figure 1, Figure 3 is a configuration diagram of an example of a cordless telephone, and Figure 4 is data using a conventional telephone. This is a configuration diagram of an example of communication. [Effects of the Invention] When data communication is performed between a data terminal device such as a personal computer through a telephone line, in the diagram according to the present invention, 1 is a base unit, 2 is a slave unit, 21 is a radio circuit, 22 is a telephone call circuit, and 3 4 is a changeover switch, 4 is a signal coupling circuit, 42 is a transmission signal, 5 is a connector, and 7 is a telephone line. 23 is a transmitting/receiving circuit, 41 is a receiving signal, 43 is a two-way analog signal, 6 is a data terminal device, 8 is a radio line, Figure j J's, #, 8 to figure mouthpiece 1 Figure Vl- Nuyuki 4 Meiki's one image sword 4 噸pe 17th figure 3 Ino L comes 5 machines l and 1 trigram! Yulλ News I7-min'
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Claims (1)

[Claims] 1) A base unit (1) with one input/output end connected to a telephone line (7) and the other connected to a wireless line (8); A cordless telephone having a handset (2) connected via a wireless line (8) of the handset (1), the handset (2) having a wireless circuit connected to the wireless line (8). (21), a communication circuit (22) connected to the radio circuit (21), and a communication circuit (23) connected to one side of the communication circuit (22) via a changeover switch (3).
) and a signal coupling circuit (4) connected to the other, and a connector (5) connected to the signal coupling circuit (4) and forming the other input/output terminal, the slave unit (2) When making a call, the changeover switch (3) is switched so that the transmitting/receiving circuit (23) is connected to the call circuit (22), and the data terminal device (6) is connected to the connector (5). When performing data communication,
A cordless telephone set, characterized in that the changeover switch (3) is switched so that the signal coupling circuit (4) is connected to the telephone communication circuit (22). 2) The signal coupling circuit (4) receives an input reception signal (
2. The cordless telephone set according to claim 1, wherein two unidirectional analog signals, ie, a transmitting signal (41) and an outputted speech signal (42), are mutually converted into one bidirectional analog signal (43).