JPH0620231B2 - Telephone calling method and device in facsimile communication - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone in facsimile communication in which a facsimile reception operation is automatically started when a telephone call signal is received, and then the telephone call to the other party can be made very easily. The present invention relates to a calling method and its device.

2. Description of the Related Art Conventionally, since a device of this type automatically starts a facsimile operation (reception or transmission) in a short time when a ringing signal is received when a call signal is received, a call is normally used. There wasn't. Therefore, the calling side did not expect the other party to answer the call from the beginning, and after hearing the response signal from the called side, he often pressed the start button of the facsimile to hook on and leave the place. This is usually done because it is not necessary to make a call after the facsimile communication, but it is also because it is not possible to make a call to the other party after the facsimile communication.

FIG. 3 is a block diagram showing an example of a conventional facsimile apparatus provided with such a device. This facsimile apparatus includes a control unit 1 for controlling each circuit of the present apparatus, and a control unit 1
A line switching circuit 3 for switching and connecting the telephone and the telephone 2 to a line, a ringing signal detection circuit 4 connected to the telephone 2 side for receiving the telephone call to the line switching circuit 3, and a line switching circuit 3 A loop detection circuit 5 connected to the line side to detect the line connection state and a buzzer 6 connected to the control unit 1 to notify the signal input / output state are provided.

In this device, the line is connected to the telephone set 2 by the line switching circuit 3 in the talking state. In this state, you can talk if you are hooked off. However, the line is connected to the control unit 1 during the facsimile communication, the telephone 2 is disconnected from the line, and when the line is switched to the telephone 2 after the facsimile communication is completed, the telephone 2 immediately opens the DC loop because of the hook-on state. Since the line is disconnected, the call cannot be made after the facsimile communication by the above-mentioned usage.

As a countermeasure against this, in a facsimile apparatus, a telephone call button is provided on the facsimile main body, hook-off is performed during facsimile communication, and the button is pressed to notify the other party according to the facsimile communication procedure, and then the other party calls for a certain period of time. A device is conceivable in which a telephone call is made, the telephone of the other party is hooked off before the time-out, and then the telephone call button is pressed, so that the line is switched and connected to the telephone side.

Problems to be Solved by the Invention However, such a facsimile apparatus has a problem in that the operation panel needs to be provided with a telephone call button, which complicates the apparatus. This problem occurs for the following reasons. That is, when the line is connected to the facsimile side, the telephone is in a state of being disconnected from the line, and the facsimile control unit cannot recognize whether the telephone is hooked off or not. In addition to the facsimile device, it is necessary to instruct to switch the line from the facsimile control unit to the telephone, and the above-mentioned problem occurs because the countermeasure is taken.

The present invention has been made in view of the above-mentioned problems, and makes a telephone call in facsimile communication in which it is possible to make a call with the other party by simply hooking off when the other party wants to call or when the other party calls. It is an object to provide a method and an apparatus thereof.

Means for Solving the Problems In order to achieve the above object, the present invention provides a telephone for detecting a signal indicating a hook state, and a line switching means for switching and connecting a telephone and a control unit of a facsimile apparatus to a line. A call request signal transmitting means for transmitting a call request signal by detecting a hook-off of the telephone during facsimile communication, and an informing means for detecting an incoming call of the call request signal transmitted from a communication partner and calling the telephone. And a control means for detecting the hook-off of the telephone after the telephone call by the notifying means and switching the line from the facsimile side to the telephone side.

Function During facsimile communication, the calling side sends a modified EOM signal instead of the EOM signal because it is hooked off before the sending timing of the message end signal (EOM signal), and on the called side The modified MCF signal that replaces the MCF signal is sent because the hook-off is performed before the sending timing of the message confirmation signal (MCF signal). The terminal side receiving the modified EOM signal or the modified MCF signal holds the line on the facsimile side for a predetermined time even after the completion of the facsimile communication procedure, keeps calling the telephone during this holding, and a signal indicating hook-off is sent from the telephone to the control unit from the telephone. When output, the telephone call is stopped and the line is switched from the facsimile side to the telephone side.

First Embodiment FIG. 1 is a block diagram showing a facsimile apparatus equipped with a telephone calling apparatus for facsimile communication according to an embodiment of the present invention. This facsimile device includes a line switching circuit 14 for switching and connecting a telephone 11 and a transmission / reception circuit 12 of the facsimile device to a telephone line 13, a telephone line 13 and a telephone.
A calling signal detection circuit 15 for detecting a calling signal sent from the calling side terminal in the state where 11 is connected, and a telephone call notification circuit 16 for notifying when a predetermined signal is input from the other party.
And a control signal detection circuit 17 for detecting a control signal sent from the calling side terminal regardless of the operating state of the line switching circuit 14, the telephone 11, the ringing signal detection circuit 15, the control signal detection circuit 17 and the transmission / reception circuit. Having a controller 18 connected to 12,
The telephone 11 outputs a hook-off signal to the controller 18. During facsimile communication, the control unit 18 sends a modified EOM signal instead of the EOM signal because the telephone 11 is hooked off before the sending timing of the message end signal (EOM signal) on the calling side, and On the called side, the telephone 11 is hooked off before the timing of sending the message confirmation signal (MCF signal), so that the modified MCF signal instead of the MCF signal is sent. Upon receiving the modified EOM signal or the modified MCF signal, the control unit 18 of the terminal holds the line 13 in the transmission / reception circuit 12 for a predetermined time even after the end of the facsimile communication, and keeps the telephone call during the holding, and the hook-off signal is received. When output from the telephone 11 to the control unit 18, the telephone call is stopped and the line 13 is switched from the transmission / reception circuit 12 to the telephone 11.

In this embodiment, the modified EOM signal is a signal having the same frequency as the normal EOM signal and a slightly longer duration. However, proper facsimile communication is possible even in communication with a device that does not have the function of the present invention. Normal EOM as done
The signal may have the same frequency as that of the signal, and the signal may be made to be a non-signal once and then sent again after a predetermined time has passed, or a different frequency may be sent for a predetermined time after the normal EOM signal. It may be a signal. In facsimile communication, when an EOM signal is received, the disconnection is detected and a normal MCF signal is sent out.
Appropriate communication can be performed if the signal is detected long enough. The modified MCF signal is configured in the same manner as the modified EOM signal.

The control signal detection circuit 17 inputs signals from both the telephone 11 side and the transmission / reception circuit 12 side of the line switching circuit 14, so that the facsimile activation signal emitted from the other party's terminal can be received even during a call. ing.

The call signal detection circuit 15 is adapted to detect when the other party's telephone is hooked off and a telephone call is made. The telephone call notifying circuit 16 notifies the telephone call associated with this detection.

The operation of the facsimile apparatus configured as described above will be described based on the signal transmission procedure diagram of FIG.

While the facsimile is on standby, the line 13 is connected to the telephone 11 side by the line switching circuit 14. FIG. 2 (a) shows a procedure for calling a telephone at the called terminal that is automatically receiving. Normally, in the called side device, first, a facsimile activation signal is sent from the calling side, and a response signal to this is sent to the calling side. Upon receiving this response signal, the calling side switches the line to the facsimile side and advances the facsimile communication. When the called party wants to call the telephone during the facsimile communication as described above, the telephone is hooked off. When the transmission of the image signal is completed, the control unit 18 transmits the modified EOM signal as described above instead of the normal EOM signal in accordance with the hook-off signal transmitted by the telephone 11.

When this modified EOM signal is detected on the called side, if the called side telephone 11 is hooked on, a normal MCF signal is sent out, and at the same time, a timer with a predetermined time limit is started and is issued. Controls the calling side call notification circuit 16
Activate via 18 to call someone. At this time, since the line switching circuit 14 is still connecting the line 13 to the transmission / reception circuit 12, the line 13 is held. Since the calling terminal is hooked off, the line 13 is switched to the telephone 11 side after the MCF signal is detected. In this manner, for example, a synthetic voice or a music box sound may be played by the transmission / reception circuit 12 on the calling side during the calling of the called side to make it clear that the telephone is being called.

The called party receives a call while the telephone is being called by the call notification circuit 16.
It is constantly monitoring whether 11 is hooked off. At this stage, when hooked off, the control unit 18 stops the call in the call notification circuit 16, and the line switching circuit 14 causes the line 13
Is switched and connected to the telephone 11. This allows the calling party to talk to the called party.

Also, if the hook is turned on after the facsimile is started on the calling side, a normal EOM signal is sent at the end of the image signal, and the called side detects this signal by the control signal detection circuit 17. At this time, if the called side is also in the hook-on state, a normal MCF signal is returned and the line 13 is immediately returned to the telephone 11 side and the line 13 is opened. However, Fig. 2 (b)
As shown in, when the called side makes a telephone call while the called side is receiving, the telephone 11 may be hooked off. When the called side is hooked off in this way, the called-side control unit 18 detects the EOM signal, and when transmitting the MCF signal, it checks whether or not the hook-off signal of the telephone 11 is input, and the hook-off is performed. When the signal is input, the modified MCF signal configured as described above is transmitted. Upon reception of the modified MCF signal, the calling side hooked on activates the call announcing circuit 16 to make a telephone call as in the case of receiving the modified EOM signal. When the calling telephone 11 is hooked off during this telephone call, the control unit
18 detects this, stops the operation of the call notifying circuit 16, and returns the line 13 to the telephone 11 side to enable the call.

If both the calling side and the called side are in the hook-off state from the beginning, a call can be made immediately after the communication is completed. On the other hand, if the terminal on the other end is not hooked off after waiting for the time-out, the telephone call is stopped at that point and the line 13 is returned to the telephone 11.

In the present embodiment, the control signal detection circuit 17 is configured to input a control signal regardless of the connection state of the line 13 (even when the telephone 11 side and the transmission / reception circuit 12 side are in the dislocated connection state). Since the input of the facsimile control signal is monitored and controlled even during the communication, if this signal is transmitted to the other party, it is possible to shift to the facsimile communication even during the call.

EFFECTS OF THE INVENTION As is apparent from the above description, the present invention is modified in place of the EOM signal and the MCF signal when the hook-off detection signal is input to the facsimile control unit and detected when the other party wants to call the telephone. EOM signal or modified M
A CF signal is sent out, the other side detects the signal, and the telephone call is notified while the line is held on the facsimile side.
When the called side terminal is hooked off, the hookoff is detected and the line is returned to the telephone side. Therefore, a call can be made simply by hooking off without providing a telephone call button in the control unit.

[Brief description of drawings]

FIG. 1 is a block diagram showing a facsimile device equipped with a telephone calling device for facsimile communication according to an embodiment of the present invention, and FIG. 2 (a) is an embodiment of a telephone calling method for facsimile communication according to the present invention. FIG. 2B is a signal transmission procedure diagram showing the case of calling the calling side, FIG. 2B is a signal transmission procedure diagram showing the case of calling the calling side in the embodiment, and FIG. 3 is a block diagram showing an example of a conventional facsimile apparatus. Is. 11 …… telephone, 12 …… transceiver circuit, 13 …… line, 14 ……
Line switching circuit, 15 ... Ring signal detection circuit, 16 ... Ring alert circuit.

Claims (2)

[Claims] 1. At the time of facsimile communication by a facsimile machine equipped with a telephone that outputs a signal indicating a hook state, the calling side terminates the message by detecting hook-off of the telephone before the timing of sending a message end signal. The call request signal, which replaces the signal, is sent to the other party, and the callee, on the called party, detects the hook-off of the telephone before the message confirmation signal is sent, and the other party receives the call request signal instead of the message acknowledge signal. The facsimile device on the other end, which has sent the call request signal, holds the line for a predetermined time after the facsimile communication procedure is completed and makes a telephone call, and stops the telephone call when a signal indicating hook-off is output from the telephone. And to switch the line from the facsimile side to the telephone side. Phone call method in a facsimile communication and butterflies. 2. A telephone for outputting a signal indicating a hook state, a line switching means for switching and connecting the telephone and a facsimile device to a line, and a call request signal by detecting hook-off of the telephone during facsimile communication. A call request signal transmitting means for sending, a notifying means for detecting an incoming call of the call request signal sent from a communication partner to make a telephone call, and a hook-off of the telephone after the telephone call by the notifying means is detected to establish a line. A telephone calling device in facsimile communication, comprising: a control means for switching from the facsimile side to the telephone side.