KR0122538B1 - Line connecting device and method of a facsimile - Google Patents

Abstract

The present invention provides a line connection system for a facsimile unit that assures telephone conversation disconnection-free function. The inventive system includes a first switching part selectively switching connecting a local line to an extension terminal and a telephone in response to a first switching control signal received from the facsimile's control part; and a second switching part selectively switching connecting data transmit/receive part to the first switching part's extension terminal and telephone in response to a second switching control signal received from the control part. When a user dials with the facsimile's key pad holding the telephone's handset, the line connection system prevents telephone conversation disconnection by continuous connection switching.

Description

Facsimile Line Connections and Methods

1 is a configuration diagram of a conventional facsimile line connection device.

2 is a partial configuration diagram of a facsimile with one embodiment according to the present invention.

3 is a control flow diagram of a facsimile machine according to an embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile with a telephone, and more particularly, to a line connection device and a method for switching a trunk line to a telephone and a facsimile body.

1 is a partial configuration diagram of a facsimile connecting a conventional line connection device, the control unit 40 controls the overall operation of the facsimile. The modem 30 is connected to the control unit 40, modulates and demodulates and transmits and receives data, and has a DTMF generator therein to generate and output a DTMF signal under the control of the control unit. The relay switch K1 selectively switches and connects the trunk line terminals L1 and L2 to the fax side terminals b1 and b2 and the integrated telephone terminals a1 and a2 in response to the control signal received from the control unit 40. The modem 30 is connected to the control unit 40, modulates and transmits and receives image data through the amplifying unit 10 and the matching transformer T1, and generates a DTMF signal under the control of the control unit including a DTMF generating unit. Output The integrated telephone 20 is connected to the relay switch K1 and the controller 40 and outputs a hook on / off signal to the controller, and performs a function of a general telephone.

Hereinafter, the line connection operation of the conventional facsimile will be described in detail based on the configuration of FIG.

First, the control unit 40 of the facsimile outputs a switching control signal for connection with the telephone to the relay switch K1 in response to detecting the hook-off signal of the integrated telephone 20. The relay switch K1 forms a call path by connecting the trunk line terminals L1 and L2 and the integrated telephone terminals a1 and a2 in response to the switching control signal received from the control unit 40.

In addition, the controller 40 controls the relay switch K1 to connect the trunk line terminals L1 and L2 to the fax side terminals b1 and b2 when a key input is detected through a facsimile keypad (not shown). To establish a communication path with the modem (30). The controller 40 controls the modem 30 to generate and output a DTMF signal corresponding to a dial key input from a facsimile keypad (not shown). In addition, when the DTMF signal output ends, the control unit 40 controls the relay switch K1 again to switch the trunk line terminals L1 and L2 with the integrated telephone terminals a1 and a2 to form a telephone call path.

The controller 40 controls the relay switch K1 when the start key input for data transmission of the facsimile is received to form a data communication path between the trunk line and the modem 30.

Hereinafter, a brief description of the problems caused by the operation of the conventional line connection apparatus of the above-described facsimile, when the user first lifts the handset of the integrated telephone 20 and performs the dial key input through the facsimile keypad, the time from which the signal is transmitted from the facsimile During the call with the integrated telephone 20 is disconnected, the user can not detect the progress operation.

Therefore, the facsimile that constitutes the conventional line connection device as described above is continuously disconnected by line switching when receiving the ARS service (Voice Information Service System), which is widely used through the attached telephone. There was a problem that you can not get service.

It is therefore an object of the present invention to provide a line connection device and method for disconnecting a telephone call during a call using the keypad of the fax machine while holding the handset of the integrated telephone set in the fax.

In order to achieve the above object, the present invention provides a facsimile having a keypad for dialing, comprising a CO line, an integrated telephone, and a DMP generator therein and generating a DFM signal corresponding to the keypad input. A modem to be output, and between the trunk line and the modem, and between the trunk line and the integrated telephone, under the predetermined control, the trunk line and the modem are switched in a hook-on state, and in the hook-off state. First switching means for switching the trunk line and the integrated telephone, and detecting the hook-on / off state of the integrated telephone to control the first switching means to control the trunk line and the modem, or the trunk line and the integrated telephone. A control unit for selectively switching a telephone, the modem in a hook-off state, It is characterized in that it is connected between the first switching means, and the second switching means for transmitting the DFM signal to the trunk line through the first switching means.

In order to achieve the above object, the present invention provides an integrated telephone, a modem having a DMP generator therein, and a facsimile line connection method in a facsimile having a keypad for dialing input, the hook-on of the integrated telephone. A first process of detecting a state and connecting the modem to the trunk line, a second process of detecting a hook-off state of the integrated telephone and connecting the integrated telephone to the trunk line, and the hook of the second process When there is a dialing input through the keypad in the off state, a third process of generating a DFM signal corresponding to the dialing input by using the modem, and the DFM signal generated in the third process is integrated. The fourth step is to send out to the trunk line connected to the integrated telephone via a telephone. It is characterized by loosening.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a partial configuration diagram of a facsimile having an embodiment according to the present invention, wherein the controller 40 controls the overall operation of the facsimile.

The modem 30 is connected to the control unit, modulates and transmits and receives data, and has a DTMF generator therein to generate and output a DTMF signal under the control of the control unit.

The integrated telephone 20 is connected to the control unit 40, performs a function of a general telephone, and outputs a hook on / off signal to the control unit 40.

The amplifier 10 is connected to the modem to amplify and output the input signal.

The first relay switch K21 includes trunk line terminals L1 and L2, first connection terminals a1 and a2, and second connection terminals b1 and b2, and is received from the controller 40. The trunk line terminals L1 and L2 are selectively switched to the first connection terminals a1 and a2 and the second connection terminals b1 and b2 in response to the switching control signal.

The second relay switch K22 is connected to the second connection terminals b1 and b2 of the first relay switch K21 through a first matching transformer T21 and an integrated telephone through a second matching transformer T22. And a selective switching connection to the integrated telephone 20 and the first relay switch K21 via the amplifier 10 in response to the second switching control signal received from the controller 40.

Capacitor C3 is for preventing the DC loop from being formed toward the second matching transformer T22, which is a high impedance transformer.

3 is a flow chart of a facsimile control process with one embodiment of the present invention, the first and second relay switches of the second degree control section 40 when the user picks up the phone's handset and dials using the facsimile's keypad. The switching control process of (K21, K22) is shown.

The DTMF sending level of the facsimile having the above-described configuration should be doubled than the conventional configuration. This is because the trunk line side and the integrated telephone 20 are connected in parallel to the modem.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the configuration of FIG. 2 and the processing flowchart of FIG.

First, the control unit 40 maintains the standby state of step 302. At this time, the standby connection state of the first relay switch K21 is a connection between the trunk line terminals L1 and L2 and the second connection terminals b1 and b2. The connection state of the second relay switch K22 is a connection state between the modem 30 and the first relay switch K21. Therefore, the connection path in the standby state becomes a communication path between the trunk line and the modem 30.

If a signal is input in the standby state of step 302, the controller 40 searches for the hook-off signal received from the integrated telephone 20 in step 304. The controller 40 loops to step 302 if the input signal is not a hookoff signal in step 304. In addition, if the input signal is a hook-off signal in step 304, the controller 40 outputs first and second switching control signals to the first and second relay switches K21 and K22 in step 306. FIG. First, the first relay switch K21 is controlled by the first switching control signal to switch the trunk line terminals L1 and L2 to the first connection terminals a1 and a2 which are the connection terminals of the integrated telephone 20. In addition, the second relay switch K22 is controlled by the second switching control signal so as to switch between the modem 30 and the integrated telephone 20. Therefore, the line connection state at this time is a state in which the trunk line is commonly connected to the integrated telephone 20 and the modem 30.

In step 308, the control unit 40 searches for a key input from the keypad of the fax (not shown).

If there is no key input in step 308, the controller 40 proceeds to step 314, and if there is a key input, in step 310, the controller 40 searches whether the key input is a dial key input. If the key input is the other function key, the corresponding routine is performed in step 320. Here, the other function keys mean function keys such as a start key for transmitting data. In addition, in step 310, the controller 40 transmits a corresponding DTMF signal through the modem 30 in step 312 when the key input is a dial key input.

The control unit 40 searches for the hook-on signal from the integrated telephone 20 in step 314, and loops to step 308 if the hook-on signal is not received. In addition, when the hook-on signal is received in step 314, the control unit 40 controls the first and second relay switches K22 in step 316 to establish a line state only between the trunk line and the modem 30. Switch to.

As described above, the present invention has an effect of preventing a call disconnection due to continuous connection switching of a line connection device when carrying out a dialing process through a keypad of a facsimile with a handset of a telephone.

In addition, the present invention has the advantage that it is possible to simply monitor the dialing process of the fax through the phone.

Claims (3)

A fax having a keypad for dialing, comprising: a trunk line, an integrated telephone, a modem having a DTP generator therein, a modem for generating and outputting a DFM signal corresponding to the keypad input, and the trunk line It is located between the modem and between the trunk line and the integrated telephone, and under the predetermined control switching connection between the trunk line and the modem in the hook-on state, and the trunk line and the integrated telephone in the hook-off state A first switching means for switching a connection, and detecting a hook-on / off state of the integrated telephone to control the first switching means to selectively switch the trunk line and the modem, or the trunk line and the integrated telephone. And a control unit configured to be connected between the modem and the first switching means in a hook-off state. And a second switching means for transmitting the DFM signal to the trunk line through the first switching means. 2. The apparatus of claim 1, further comprising: a first matching transformer connected between the first switching means and the modem to match them, and a first matching transformer connected between the first switching means and the second switching means to match them. A facsimile line connection device further comprising a two-match transformer. In a facsimile line connection method of a facsimile having an integrated telephone, a modem having a DTP generator therein, and a keypad for dialing input, a method of connecting a trunk line is detected by detecting a hook-on state of the integrated telephone. A first process of connecting, a second process of detecting a hook-off state of the integrated telephone and connecting the integrated telephone to the trunk line, and a dialing input through the keypad in the hook-off state of the second process And a third process of generating a DFM signal corresponding to the dialing input by using the modem, and the trunk line, wherein the DFM signal generated in the third process is connected to the integrated telephone through the integrated telephone. Line connection of the facsimile, characterized in that the fourth process to be sent to the line Law.