JPH10200649A - Speech and data communication automatic changeover device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speech/data communication automatic changeover device that is employed for a system in which speech communication or data communication is selected through a single line, in which speech communication made by tentatively stopping data communication and the data communication is automatically restarted after the end of the speech communication. SOLUTION: When a telephone set control section 6 detects a hook-off during data communication, a modem control section 8 saves status information of a modem 19 to a storage section 9 to stop the modem 16, and a control data transmission section 10 sends a speech request signal to an opposite party. On the other hand, when a speech request signal is sent from an opposite party, the status information of the modem 16 is saved in the storage section 9 to stop the operation of the modem 16. When the telephone set control section 6 detects a hook-on after that, a central control section 7 switches a communication changeover section 5 to the data communication connection state, and the modem control section 8 realizes the state before the data communication stops, based on the status information saved in the storage section 9 and restarts data communication.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic telephone call / data communication switching device for switching a modem or a telephone connected to information equipment to connect to one line (a line capable of performing both data communication and voice communication).

[0002]

2. Description of the Related Art As a conventional communication mode using a line such as a public line or a dedicated line, voice communication (call) using a telephone and data communication using an information device such as a personal computer are performed via one line. There is a form to do. Data communication is performed by connecting a modem between an information device and a line, and modulates data (digital signal) output from the information device into an analog signal by the modem on the transmitting side and transmits the data via the line. The transmitting and receiving side demodulates an analog signal into data (digital signal) by a modulation / demodulation device and receives it by an information device.

[0003]

By the way, in the above-described communication mode in which voice communication (call) using a telephone and data communication by an information device such as a personal computer are performed through one line, data communication is not performed. Even if it is necessary to make a call with the other party during communication, there is no means to temporarily stop data communication from outside, so you must wait until all necessary data communication is completed. Did not. As a means for meeting the above-mentioned needs, it is conceivable to draw two lines, one for exclusive use for telephone communication and the other for exclusive use for data communication, but this increases the economic burden.

The present invention has been made in view of the above circumstances, and in a communication mode in which a call and data communication are performed through one line, during data communication, the call is easily paused to perform a call. It is an object of the present invention to provide an automatic call / data communication switching device capable of easily resuming data communication after a call ends.

[0005]

SUMMARY OF THE INVENTION An automatic call / data communication switching device for selectively switching one of a modem and a telephone connected to information equipment and connecting to one line is constructed as follows. That is, a centralized control unit that receives various interrupt signals to be described later and sends various control signals corresponding to the received interrupt signals, and at the time of data communication,
When an off-hook signal from the telephone is detected, a call interrupt signal is output to the central control means, and a telephone call command signal from the central control means is sent to the telephone to send a call signal. The call between the telephone connected to the other device (the same call / data communication automatic switching device as the call / data communication automatic switching device according to the present invention) ends, and both telephones are turned on-hook. When it is detected, the telephone control means for outputting a call end interrupt signal to the central control means, and a call request transmission command signal from the central control means according to the call interrupt signal, and Control data transmitting means for outputting a call request signal to the connected other device, and a modem stop command signal from centralized control means in response to the call interrupt signal. And when the state information of the modem is stored and stored in a built-in storage unit and a data transmission stop command signal is output to the modem, while the call request signal from the partner apparatus is detected. To
A state of the modem is stored and stored in a built-in storage unit, and the modem is stopped, and a call request interrupt signal for outputting the telephone call command signal to the telephone controller is sent to the central controller. Receiving the data communication restart command signal from the centralized control means in response to the call termination interrupt signal, and stopping the data communication of the modem based on the state information stored and held in the storage unit. Modem control means for returning to the state of the time and restarting data communication, and when receiving a switching control signal from centralized control means according to the call interruption signal, once the line and the control data transmission means After that, when the line and the telephone are connected, and when a switching control signal is received from centralized control means according to the call request interrupt signal, the line and the telephone are connected. A communication switching means for connecting the line and the modem when receiving a switching control signal from the central control means according to the call termination interrupt signal. did.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of an automatic call / data communication switching device 1 according to an embodiment of the present invention, including a line 13, a modem 16, an information device 15, and a telephone 17.
This is shown in relation to In the automatic call / data communication switching device 1 shown in FIG. 1, the communication switching unit 5 transmits the line 13 to the telephone control unit 6, the modem control unit 8, or the control data transmission based on the switching control signal from the central control unit 7. Part 1
0 is a circuit section connected to any of the above. Telephone control unit 6
When the telephone 17 goes off-hook when the line 13 and the modem control unit 8 are connected by the communication switching unit 5 and is in the data communication state, the off-hook signal transmitted from the telephone 17 is transmitted. A circuit unit that detects and outputs a call interruption signal to the central control unit 7. Further, when receiving a telephone call command signal from the central control unit 7, the circuit unit transmits a call signal to the telephone 17 and calls the telephone 17. Further, when the line 13 and the telephone control unit 6 are connected by the communication switching unit 5 to be in a talking state, both the telephone 17 and the telephone connected to the partner device are in the on-hook state. When this is detected, the circuit unit outputs a call termination interrupt signal to the centralized control means.

When receiving a call interruption signal from the telephone control unit 6, the central control unit 7 outputs a modulation / demodulation device stop command signal to the modulation / demodulation device control unit 8 and controls the communication switching unit 5 to control the line. 13 and the control data transmitting unit 10 are temporarily connected, and in the meantime, the control signal transmitting unit 10 outputs a command signal for instructing the control data transmitting unit 10 to transmit a call request signal to the partner device via the line 13. Thereafter, the communication switching unit 5 is controlled again to connect the line 13 and the telephone control unit 6 to form a circuit unit. When receiving a call request interrupt signal from the modem control unit 8 during data communication, the central control unit 7 switches the communication switching unit 5 to connect the line 13 to the telephone control unit 6. It is also a circuit unit that performs control and outputs a telephone call command signal to the telephone control unit 6 during this control. Further, when the central control unit 7 detects the call end interrupt signal from the telephone control unit 6, the central control unit 7 performs switching control so that the communication switching unit 5 connects the line 13 with the modem control unit 8. At the time of this control, it is also a circuit unit that outputs a data communication restart command signal to the modem control unit 8.

When the modem control unit 8 receives the modem stop command signal from the centralized control unit 7, the modem unit 8 saves the state information of the modem 16 at this time in the storage unit 9 and stores the data in the modem 16. This is a circuit unit that outputs a transmission pause command signal. When detecting a call request signal transmitted from the partner device (an automatic call / data communication switching device as described above) transmitted via the line 13, the state information of the modem 16 is saved to the storage unit 9. After that, the circuit unit outputs the call request interrupt signal to the central control unit 7 after the operation of the modem 16 is stopped. Further, when the data communication restart command signal is received from the central control unit 7, the state information saved in the storage unit 9 is read, and the modem 16 is returned to the state before the data communication was stopped based on this. It is also a circuit unit that returns to resume data communication operation. When receiving the call request signal transmission command signal from the central control unit 7, the control data transmission unit 10
3 is a circuit unit for transmitting a call request signal to the other party's device via the communication device 3.

Next, the operation of the automatic call / data communication switching device 1 configured as described above will be described with reference to FIG. However, in each part shown in FIG. 2, the same reference numerals are given to the parts corresponding to FIG. 1, and the description thereof will be omitted. 2 (a) to 2 (d), a call /
Data communication automatic switching device 21 (Since the configuration and function are the same as those of the automatic call / data communication switching device 1, the same circuit components as those in FIG. A communication / data communication automatic switching device 21 is connected to an information device 23 via a modem 22.
Further, it is assumed that the telephone 24 is directly connected.
It is assumed that data communication is currently being performed between the information devices 15 and 23 as indicated by the bidirectional arrow 30 in FIG. In this case, in both the call / data communication automatic switching devices 1 and 21, the communication switching unit 5 is in a state where the line 13 and the modem control unit 8 are connected. Here, as shown by reference numeral 32 in (b), when the telephone set 17 is off-hook, the telephone control section 6 of the automatic call / data communication switching device 1 detects the off-hook and interrupts the call to the central control section 7. Output a signal. Upon receiving the interrupt signal, the central control unit 7 outputs a modulation / demodulation device stop command signal to the modulation / demodulation device control unit 8. Upon receiving the command signal, the modulation / demodulation device control unit 8 saves the state information of the modulation / demodulation unit 16 at the time of receiving the command signal into the storage unit 9 and outputs a data transmission stop command signal to the modulation / demodulation device 16. The central control unit 7 performs switching control on the communication switching unit 5 to switch to a state in which the line 13 and the control data transmitting unit 10 are connected, and at the same time, transmits a call request signal to the control data transmitting unit 10. Output command signal. The control data transmitting unit 10 that has received the command signal transmits a call request signal to the device 21 via the line 13 as indicated by an arrow 33. Thereafter, the centralized control unit 7 of the device 1 controls the communication switching unit 5 to switch to a state in which the line 13 and the telephone control unit 6 are connected.

On the other hand, in the device 21, when the modem control unit 8 detects the call request signal transmitted from the device 1, it saves the state information of the modem 22 to the storage unit 9, After the operation is stopped, a call request interrupt signal is output to the central control unit 7. The centralized control unit 7 having received the interrupt signal controls the communication switching unit 5 to switch to the connection state between the line 13 and the telephone control unit 6, and simultaneously outputs a telephone call command signal to the telephone control unit 6. Upon receiving this command signal, the telephone control unit 6 calls the telephone 24, and the telephone 24
Sounds. Here, as shown in FIG.
When the telephone 24 is off-hook, the telephones 17 and 24 enter a talking state as indicated by an arrow 36. When this call is completed and both telephones 17 and 24 are turned on-hook as indicated by reference numerals 38 and 39 in (d), and when the telephone controller 6 of the devices 1 and 21 detects this on-hook, both telephone controllers 6 outputs a call end interrupt signal to each centralized control unit 7. Upon receiving the interrupt signal, the centralized control units 7 switch the connection state between the line 13 and the modulation / demodulation device control unit 8 by controlling the respective communication switching units 5 and simultaneously resume data communication to the modulation / demodulation device control unit 8. Output command signal. Upon receiving this command signal, the modem control unit 8 reads the state information saved in the storage unit 9 and returns to the state before the data communication was stopped based on the read state information. Instructs the restart of the data communication operation. As a result, the data communication is resumed as indicated by the bidirectional arrow 40.

By using the automatic call / data communication switching apparatus according to the above-described embodiment, when data communication is performed via a certain line, the caller is connected via the above line. You can pause the ongoing data communication and talk to the other party simply by going off-hook on the phone you are on, and resume the paused data communication just by hooking up the phone after the call ends. be able to. As described above, the present embodiment has been described in detail with reference to the drawings. However, the specific configuration is not limited to the present embodiment, and the design may be changed without departing from the scope of the present invention. Included in the present invention.

[0012]

As described above, according to the present invention,
In a communication mode in which a call and data communication are performed on one line, during the data communication, the call can be easily paused and the call can be performed, and the data communication can be easily resumed after the call ends. It is possible to provide an automatic call / data communication switching device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an automatic call / data communication switching device according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining an operation of the automatic call / data communication switching device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic call / data communication switching device 5 Communication switching unit 6 Telephone control unit 7 Central control unit 8 Modulation / demodulation device control unit 9 Storage unit 10 Control data transmission unit 13 Line 15 Information equipment 16 Modulation / demodulation device 17 Telephone 21 Automatic call / data communication switching Device 22 Modulator / demodulator 23 Information equipment 24 Telephone

Claims (1)

[Claims] 1. An automatic call / data communication switching device for selectively switching one of a modem and a telephone connected to information equipment and connecting to one line. Centralized control means for transmitting various control signals corresponding to the received interrupt signals; and, during data communication, when detecting an off-hook signal from the telephone, outputting a call interrupt signal to the centralized control means; Further, upon receiving a telephone call command signal from the central control means, a call signal is sent to the telephone, and a telephone call between the telephone and the telephone connected to the other party's device is terminated, and both telephones enter an on-hook state. A telephone control means for outputting a call end interrupt signal to the central control means when detecting that the call has ended, and a telephone call from the central control means according to the call interrupt signal. Control data transmitting means for receiving a request transmission command signal and outputting a call request signal to the other device connected via the line, stopping the modem from the centralized control means in response to the call interrupt signal When the command signal has been sent, the state information of the modem is stored and stored in a built-in storage unit and a data transmission pause command signal is output to the modem,
Upon detecting the call request signal from the other party's device, the state information of the modem is stored and stored in a built-in storage unit, the modem is stopped, and the telephone call command signal is transmitted to the telephone control means. A call request interrupt signal for outputting to the central control means is output to the central control means, and further, a data communication restart instruction signal from the central control means in response to the call end interrupt signal is received and stored in the storage unit. A modem control means for returning the modem to the state at the time of data communication stop and restarting data communication based on the state information which has been set, and a switching control signal from centralized control means according to the call interruption signal. When the call is received, the line is once connected to the control data transmitting means, then the line is connected to the telephone, and a call corresponding to the call request interrupt signal is collected. When the switching control signal is received from the middle control means, the line is connected to the telephone, and when the switching control signal is received from the central control means according to the call termination interrupt signal, the line is connected. And a communication switching means for connecting the modem to the modem.