JPH02237355A - Modem equipment - Google Patents

Abstract

PURPOSE:To surely discriminate the difference between the incoming call of data communication and that of talking by adding a prescribed code to the leading part of the data to be sent to a line, connecting a communication host to the line when the code is detected from an incoming signal and informing the arrival of the call when the code is not detected. CONSTITUTION:A prescribed code is added to the leading part of the data sent to a line 10 by a means 12 and the code is detected from an incoming signal through the line 10 by means 14. When the code is detected, a communication host 16 is connected to the line 10 and the means 18 and when the code is not detected, the incoming call is informed by a means 20. That is, when the prescribed code is detected from the reception signal, data communication is started automatically without raising a call tone and when the code is not detected, the arrival of the incoming call is informed. Thus, the incoming calls of the data communication and the calls are discriminated without any error.

Description

[Detailed Description of the Invention] [Table of Contents Overview Industrial Application Fields Prior Art Problems to be Solved by the Invention Means for Solving the Problems Effects of the Invention [Summary] Used for both data communication and telephone calls The purpose of the present invention is to provide a modem device that can reliably distinguish between data communication and incoming calls. means for detecting a call, means for connecting a communication host to a line when the code is detected, and means for notifying an incoming call when the code is not detected. Ru.

[Field of Industrial Application] The present invention relates to a modem device that can be used for both data communications and telephone calls.

According to this type of modem device, one line can also be used for telephone calls, making effective use of the line possible.

[Prior art] In this type of conventional device, an incoming call is regarded as data communication, and a tone signal is sent to the sender from the time of the incoming call.

Furthermore, when a data communication call is received, a ring tone is emitted from the telephone to notify the user of the reception.

[Problems to be Solved by the Invention] However, in the past, incoming calls are considered data communications, and a tone signal is sent to the sender even when a call is received, so the line is often disconnected at the sender. The call will be unsuccessful.

Furthermore, since a ringing tone is emitted from the telephone when a data communication call is received, if the receiver is picked up after reading the call, the data communication at that time is interrupted and a communication error occurs.

The present invention has been made in view of the above-mentioned conventional problems,
The purpose is to provide a modem device that can reliably distinguish between data communications and incoming calls.

[Means for Solving the Problems] In order to achieve the above object, an apparatus according to the present invention is constructed as shown in FIG.

A predetermined code is added by means 12 to the beginning of the data sent to the line 10 in the figure.

Further, the code is detected by the means 14 from the incoming signal on the line 10.

When this code is detected, the communication boss 16 is connected to the line 10 by the means 18, and when it is not detected, the means 2o notifies the incoming call.

[Operation] In the present invention, a code that declares data communication is added to the beginning of the transmitted data, and when the receiving side detects the code, the connection partner of the line 10 is switched to the communication host 16, and When the code is not detected, an incoming call is announced.

[Embodiments] Hereinafter, preferred embodiments of the apparatus according to the present invention will be described based on the drawings.

In FIG. 2, a communication host computer 23 and a telephone $25 are connected to a modem device 21, and a modem device 29 is further connected via a telephone line 27.

The modem device 29 also has a communication host computer 31.
, telephone 33 are connected, and data communication is performed between the computer 23 and the computer 31 via the modem device 21, telephone line 27, and modem device 29.

FIG. 3 shows the configuration of the modem devices 21 and 29, and data transmitted from the computer 23 (31) is given to the control section 37 via the interface section 35 in the modem device 2 (29).

Further, the transmission data is modulated by the modulation/demodulation section 39 and sent to the telephone line 27 via the line control section 41 and the detection/switching section 43.

Further, the data transmitted from the modem device 29 (21) is given to the detection switching unit 43 of the modem device 21 (29) from the telephone line 27, and is routed through the modem device 21 (29) in the reverse path as described above.
29) to the computer 23 (31).

Here, the modem device 21.29 is provided with a code adding section 45, and the code adding section 45 adds a predetermined code to the beginning of the transmission data.

The data is transferred from the modem 21 device (29) side to the modem i!
29 (21) side, the above-mentioned code added to the beginning of the data is detected by the detection switching unit 43, and the code is sent to the line 29 (21) side.
7 is switched to the line control unit 41 side by the detection switching unit 43.

The received data at this time is demodulated by the modulation/demodulation section 39, passes through the code addition section 45 as it is, and is sent from the control section 37 to the computer 31 (23) via the interface section 35.
given to.

Further, when the code is not detected by the detection switching section 43 at the time of an incoming call, the line control section 41 notifies the control section 37 of this fact, and the control section 37 causes the buzzer 47 to sound.

This notifies the incoming call, and the telephone 33 (25)
When the handset is picked up, the detection switching section 43 switches the telephone line 27 to the telephone 33 (25) side.

Note that the control unit 37 also displays the status of the modem device 21 (29).

In Figure 4, data is transferred from the modem 21 device to the modem device 2.
The timing chart shows the operation when the data is transmitted to the 9 side, and the timing charts (A), (B), (C) . (D), (
E), (F). In (G) and (H), the data transmission function of the modem device 21 is shown in (I) of the same figure. (J),
(K), (L). (M). (N). (0
), (P), (Q). (R) explains the data receiving function of the modem device 29 at that time.

When dialing is performed on the modem device 21 side as shown in (F) of the same figure, an incoming call is displayed on the modem device 29 as shown in (N) of the same figure.

When the modem H position 29 is also placed in an off-hook state as shown in the figure (○), the modem devices 21 and 29 prepare to start data communication as shown in the figure (G) and (P).

Furthermore, the modem device 29 enters a state of waiting for reception of the code (for one second) as shown in FIG. 12(P) (CODE), and its control unit 37 displays a connection display as shown in FIG. 12(Q).

Furthermore, when the establishment of the connection is confirmed in the modem device 21 on the sending side, a connection display is performed as shown in (H) in the same figure.
Sending of data (DATA) is started as shown in FIG.

At that time, the code (1 second) is added to the beginning of the transmitted data by the code adding section 45 as shown in FIG. The switching unit 43 switches the telephone line 27 to the computer 3.
It is switched to the 1 side as shown in FIG. 1 (R).

As a result, data reception (DATA) is started on the modem device 29 and computer 23 side as shown in FIG.

In addition, in the case of an incoming call to the modem device 29, the code is not detected, so the buzzer 47 is used to notify the incoming call as shown by the line in FIG. 33 is connected to the telephone line 27.

As explained above, according to this embodiment, when a predetermined code is detected from a received signal, data communication is automatically started without emitting a ring tone, and when the code is not detected, a call is received. is notified, so it is possible to distinguish between data communication and incoming calls without error.

Therefore, the handset will not be picked up by mistake when a data communication call is received, and the call will not be unsuccessful.

[Effects of the Invention] As explained above, according to the present invention, when a predetermined code is detected from a received signal, data communication can be automatically started without emitting a ring tone, and when the code is not detected. Since the incoming call can be notified only to the recipient, it is possible to distinguish between data communication and incoming call without error.

Therefore, it is possible to avoid data communication failures and call failures, and to perform data communication and phone calls smoothly.

[Brief explanation of drawings]

Figure 1 is a diagram explaining the principle of the invention. Figure 2 is an explanatory diagram of the connection of the modem device, Figure 3 is an explanatory diagram of the configuration of the modem device; FIG. 4 is a timing chart explaining the operation of the embodiment; It is. ４５　・・ ４７　・・ ・Code addition part ·buzzer 1 0. 1　6　・ 1 8, 2　1　・ 23・ 25・ 27 ◆ 29・ ３　１　・ 3 3・ 35・ 3 7・ 3　9　・ ４　１　・ 4 3・ 12.14...means ・Communication host 20...means ・・Modem device ··Computer ・Telephone ··telephone line ・・Modem device ··Computer ・Telephone ・Interface part ・Control unit ・Modulation/demodulation section ・Line control section ・Detection switching section 111-

Claims (1)

[Scope of Claims] Means (12) for adding a predetermined code to the beginning of data sent to the line (10); Means (14) for detecting the code from an incoming signal on the line (10); means (18) for connecting the communication host (16) to the line (10) when the code is detected; means (2) for notifying the incoming call when the code is not detected;
0); A modem device comprising: