JPH0222957A - Cordless telephone set with modem function - Google Patents

Abstract

PURPOSE:To save a cost and a space by providing a connection terminal to a computer at a radio telephone set side simultaneously with providing a modem function, and connecting the computer to a telephone network by radio via the radio telephone set. CONSTITUTION:The title set is constituted in such a way that the connection terminal 3 to the computer is provided at the radio telephone set(slave set)10 side, also, the modem function is attached on it, and the computer is connected to the telephone network by radio via the radio telephone set 10. The slave set 10 can be carried freely since it is separated from a telephone line network and is miniaturized, and it can be carried in the neighborhood of the computer at need, and can be used as a data transmission equipment. In such a way, it is possible to save the cost and the space, and to construct a system with high efficiency.

Description

[Detailed description of the invention] [Table of contents] Overview Industrial field of application Conventional technology Problems to be solved by the invention Means for solving the problems (Fig. 1) Working examples (Figs. 2 to 6) Effects of the Invention [Summary] The present invention relates to a cordless telephone with a modem function, and the object of the present invention is to make it possible to transmit data using a telephone line extremely easily even in the absence of a dedicated line, and to provide a connection device that is connected to a telephone network; In a cordless telephone consisting of a wireless telephone that is connected to this connection device via a wireless line, the wireless telephone side is provided with a connection terminal for connecting to a computer, and also has a modem function, so that the computer can be wirelessly connected via this wireless telephone. It is possible to connect to the telephone network.

[Industrial application field]

The present invention relates to a cordless telephone capable of transmitting and receiving digital signals used in electronic computers and the like.

[Conventional technology]

In recent years, computer networks have played a very important role in the information society. In order to transmit this computer data, it is most desirable to provide a dedicated digital line from the standpoint of its efficient use, but it is difficult to install a dedicated digital line in every location. If one is not available, a modem or acoustic coupler and telephone are used.

Therefore, in the absence of a dedicated line, conventionally the computer was installed near the telephone, or the telephone was installed near the computer, and a modem or acoustic coupler was used to transmit data.

[Problems to be Solved by the Invention] As described above, in the conventional technology, if there is no dedicated line, it is necessary to install the computer near the telephone or the telephone near the computer. There is a problem in that it is not necessarily easy to use, either from the viewpoint of using the telephone or from the viewpoint of using the telephone.

Furthermore, when transmitting data from a large number of computers, it is necessary to install a dedicated line or a large number of telephone sets (lines) for this purpose. Therefore, in this case, there is a problem that a large-scale device is required in terms of cost and space.

The present invention consists of 1. This was developed with these points in mind, and it eliminates the need (and reduces the number of telephones connected to the telephone network) to be installed near the computer, saving cost and space. The object of the present invention is to provide a cordless telephone with a modem function that can be used as a data transmission device for a computer.

[Means to solve the problem]

FIG. 1 is a diagram illustrating the principle of the present invention.

In FIG. 1, 10.20 is a wireless telephone (handset) that constitutes the cordless telephone and a connection device (base set) that is connected to the telephone network. connected via a line. The handset 10, like a normal telephone, has a receiver (speaker) 1 and a transmitter (microphone).
2, an amplifier 4.5, a transmitter/receiver section 8, and an antenna 9; furthermore, according to the present invention, a connector 4 connected to a computer, a modem section 6 including an A/D converter and a D/A converter; It has a switch 7.

Furthermore, although the details are omitted, the base unit 20 also includes an antenna 29,
It has a transmitting/receiving section 21 and the like.

When using such a handset including the modem section 6 as a normal telephone, the two contacts of the switch 7 are switched to the a and a' sides, respectively, and used to transmit data from the computer. In this case, the two contacts of switch 7 are switched to the b' side.

[Effect]

When the two contacts of switch 7 are switched to the b' side,
The circuits on the transmitter 2 and receiver 1 sides are disconnected, and the connector 3 and modem section 6 are connected to the transmitter/receiver section 8. Therefore, by connecting a plug connected to a computer to this connector 3, computer data can be transmitted from the slave unit IO side to the base unit 20 side.

Since the handset 10 is disconnected from the telephone line network and is very small, it can be moved freely and can be carried near the computer at any time and used as a data transmission device. be able to.

〔Example〕

FIG. 2 is a diagram showing an embodiment of the invention.

In FIG. 2, the same parts as in the principle diagram of FIG. 1 are given the same numbers, so detailed explanations of these parts will be omitted.

The embodiment shown in FIG. 2 is similar to that shown in FIG. 1 above, and is an application of the present invention to an ordinary analog telephone. Here, the overall configuration of a cordless telephone with a modem function is shown, including an outline of the configuration of base unit 20. In this example, as mentioned above, the slave unit 10 and the base unit 2
0 are connected by analog signals, and the base unit is connected to an analog telephone line network.

The base unit 20 includes a transmitting/receiving section 21, an amplifier 22, 23, 2 lines,
It has a 4-wire converter 24, and this 2-wire/4-wire converter 2
The output of 4 is connected to a normal analog telephone network.

To perform computer data transmission, switch the two contacts of the switch 7 to the contact position and b' side as shown in the diagram.
As described in conjunction with the explanation of the principle diagram, it is sufficient to connect the plug from the computer to the connector 3.

FIG. 3 shows a second embodiment of the invention. In this example,
The base unit 20 and the handset 10 are connected by digital signals, and the telephone line network to which the base unit is connected is also a digital circuit network. Currently, the general telephone line network is an analog line network, but the on-premises line wA
Digitalization is also being carried out in Japan, and when considering future network systems, broadband digital networks are also considered, and are highly useful.

In Fig. 3, the same members as in Fig. 2 are given the same numbers, so detailed explanations thereof will be omitted.
In the figure, 6' is a digital-to-analog converter, and 6# is an analog-to-digital converter. Also, 25
is an interface section for connecting the base unit to the telephone line network.

Since the computer data from the connector 3 is a digital signal, it is sent as is to the antenna 9 via the transmitter/receiver section 8, transmitted to the base unit 20, and sent out to the line network via the interface section 25.

In addition, the audio signal is transmitted as a digital signal, including the telephone line network, up to just before the receiver 1 and the transmitter 2, and is converted into an analog signal by the DA converter 6' and the A-D converter 6#. .

FIG. 4 is a diagram showing a third embodiment of the present invention, in which an A-D converter/D-A converter 26 is provided in the base unit 20,
This can be changed by a switch 27. According to this, it is possible to make the digital handset 10 and base unit 20 compatible with the analog circuit network by passing them through the A-D converter/D-A converter 26, if necessary. becomes.

In the example described above, the switch 7.27 may be an automatic or a manual switch.

FIG. 5 shows an example in which there are multiple handsets A, B, and C for one base unit 20, and the base unit 20 also has multiple telephone lines. In the example in Figure 5, there are 3 slave units and 2 base units.
An example of having a telephone line is shown below. In this case,
By providing a microprocessor (MPU) 29 that operates as a time-sharing control unit in the base unit 20 and performing time-sharing processing on data transmission between parent and child, it is also possible to perform data transmission and telephone calls at the same time. Become.

FIG. 6 is a diagram showing the appearance of the cordless telephone of the present invention described above. As shown in Figure 6 (A), the base unit 2
0 is provided with an antenna 29 and a switch 26 as required. In addition, the handset 10 has
A connector 3, an antenna 9, and a switch 7 are provided.

A plug 30 connected to a computer or the like is connected to the connector 3 of the handset 10, as shown in FIG. 6(B).

〔Effect of the invention〕

As described above, according to the present invention, by installing a cordless telephone having the functions of the present invention when transmitting data from a computer, etc., it is the same as owning a mobile modem, reducing costs and space. This results in savings and enables the construction of an efficient system.

In particular, if the handset and base unit are connected by a digital line, and the telephone network to which the base unit is connected is a digital line, the signals received from the handset can be sent directly to the exchange, so the handset itself can There is no need to incorporate a modem circuit, which is advantageous in terms of cost.

Additionally, if the base unit is connected to an analog line, this can be easily handled by simply installing a modem inside the base unit.

20--base unit 21-transmission/reception section 22.23
−・−・Amplifier 24-2-wire/4-wire converter

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the principle of the present invention, Fig. 2 is a diagram showing a first embodiment of the invention, Fig. 3 is a diagram showing a second embodiment of the invention, and Fig. 4 is a diagram showing a digital system. Figure 5 is a diagram showing an example in which the base unit has multiple handsets and multiple lines; Figure 6 is a diagram showing an example where the base unit has multiple handsets and multiple lines; Figure 6 is the cordless network of the present invention. FIG. 2 is a diagram showing the appearance of a telephone.

Claims (1)

[Claims] (1) In a cordless telephone consisting of a connecting device (20) connected to a telephone network and a wireless telephone (10) connected to this connecting device (20) via a wireless line, the wireless telephone (10) side connection terminal to the computer (3
) and a modem function so that a computer can be wirelessly connected to a telephone network via the wireless telephone (10).