JP3321324B2 - Facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus for exchanging data by connecting to a public network.

[0002]

2. Description of the Related Art In many offices and business establishments, a facsimile machine is used to carry out daily communication tasks, and a data processing apparatus such as a personal computer is used to carry out daily data processing tasks.

Also, personal computer devices include:
In many cases, a printer device for recording and outputting created documents and various forms is attached.

On the other hand, the facsimile apparatus is provided with a plotter device for recording and outputting a received document image as an essential element. In recent years, a page printer such as a laser beam printer has been used as a plotter in a facsimile machine of an intermediate machine or higher.

Therefore, if the printer provided in the facsimile machine can be used also as a printer for an externally connected personal computer, it is not necessary to provide two devices having the same function, and the equipment cost can be reduced. And the installation area of the device can be reduced, which is very advantageous.

[0006]

However, in general, a facsimile apparatus is connected to a line such as a public network and exchanges data with a partner terminal. When data is to be recorded and output, there is an inconvenience that it takes time and effort to release the line connection of the facsimile apparatus and connect to the facsimile modem apparatus connected to the personal computer apparatus.

[0007] The present invention has been made in view of such circumstances, and has as its object to provide a facsimile apparatus which can be easily connected to an external apparatus.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a facsimile apparatus for exchanging data by connecting to a public network.
First connection means for connecting to a public network, second connection means for connecting to an external data device, data transmission means having at least a facsimile modem function and a facsimile transmission procedure function, and the first connection Switching means for switching the means or the second connection means to connect to the data transmission means, a document sensor for detecting that a document to be transmitted is set on the document reading means, and a document sensor for detecting the document to be transmitted by the document sensor. When the start key is operated without inputting the destination in the state of being in the state, the switching means connects the second connection means to the data transmission means to start the transmission operation of the data transmission means, and The control device includes a control unit that prohibits addition of predetermined image information to a transmission image in a transmission operation.

In a facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data apparatus, and at least a facsimile. A data transmission means having a modem function and a facsimile transmission procedure function, a switching means for switching the first connection means or the second connection means to connect to the data transmission means, and a transmission original set on the original reading means When a destination for designating the external data device is input and a start key is operated in a state where the original sensor detects a transmission original and the original sensor detects A connection unit is connected to the data transmission unit to start a transmission operation of the data transmission unit, and a transmission operation is performed in the transmission operation. Those having a control means for inhibiting adding the predetermined image information to the image.

[0010]

[0011]

[0012]

In a facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data apparatus, and at least a facsimile. A data transmission means having a modem function and a facsimile transmission procedure function, a switching means for switching the first connection means or the second connection means to connect to the data transmission means, and a first connection means or a second connection means. An off-hook detecting means for detecting an on-off hook state of a public network or an external data device based on a signal inputted through the connecting means;
A ringing signal transmitting means for transmitting a ringing signal via the connecting means, a document sensor for detecting that the transmitted document is set on the document reading means, and an on-off hook detecting means for detecting an off-hook state; When the start key is operated in a state where the original sensor is detecting a transmission original, the first connection unit is connected to the data transmission unit by the switching unit to start the transmission operation of the data transmission unit. When the start key is operated in a state where the on-off hook detecting means is detecting the on-hook state and the document sensor is detecting the transmitted document, the switching means causes the second connecting means to operate. Connected to the data transmission means, and transmits a ringing signal from the ringing signal transmission means; Upon detecting the-hook detection state, and stops sending the ringing signal from the ringing delivery means, in which a control means for initiating a transmission operation of the data transmission means.

In a facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data apparatus, and at least a facsimile. A data transmission means having a modem function and a facsimile transmission procedure function, a switching means for switching the first connection means or the second connection means to connect to the data transmission means, and a first connection means or a second connection means. An off-hook detecting means for detecting an on-off hook state of a public network or an external data device based on a signal inputted through the connecting means;
A ringing signal transmitting means for transmitting a ringing signal via the connecting means, a document sensor for detecting that a document to be transmitted is set on the document reading means, and the on-off hook detecting means detecting an on-hook state; When the specified sensor number is designated and the start key is operated in a state where the document sensor is detecting the transmitted document,
The switching means connects the second connection means to the data transmission means, sends a ringing signal from the ringing signal sending means, and when the on-off hook detecting means detects an off-hook detection state, the ringing sending means outputs a signal from the ringing sending means. Control means for stopping the transmission of the ringing signal and starting the transmission operation of the data transmission means is provided.

In a facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data device, and at least a facsimile. A data transmission means having a modem function and a facsimile transmission procedure function, a switching means for switching the first connection means or the second connection means to connect to the data transmission means, and a first connection means or a second connection means. Off-hook detecting means for detecting an on-off hook state of a public network or an external data device based on a signal input through the connecting means, an original sensor for detecting that a transmission original is set on the original reading means, In a state where the hook detecting means has detected the on-hook state and the document sensor has detected the transmitted document, When the start key is operated, the switching means connects the second connection means to the data transmission means to start the transmission operation of the data transmission means, and adds predetermined image information to a transmission image in the transmission operation. This is provided with control means for prohibiting the operation.

Also, in a facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data apparatus, and at least a facsimile. A data transmission means having a modem function and a facsimile transmission procedure function, a switching means for switching the first connection means or the second connection means to connect to the data transmission means, and a first connection means or a second connection means. An off-hook detecting means for detecting an on-off hook state of a public network or an external data device based on a signal inputted through the connecting means;
A ringing signal transmitting means for transmitting a ringing signal via the connecting means, a document sensor for detecting that the transmitted document is set on the document reading means, and an on-off hook detecting means for detecting an on-hook state; When the start key is operated in a state where the document sensor is detecting a transmission document, the switching means connects the second connection means to the data transmission means, and outputs a ringing signal from the ringing signal transmission means. When the on-off hook detection means detects an off-hook detection state,
Control means for stopping transmission of a ringing signal from the ringing transmission means, starting transmission operation of the data transmission means, and inhibiting addition of predetermined image information to a transmission image in the transmission operation. It is.

In a facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data apparatus, and at least a facsimile. A data transmission means having a modem function and a facsimile transmission procedure function, a switching means for switching the first connection means or the second connection means to connect to the data transmission means, and a first connection means or a second connection means. An off-hook detecting means for detecting an on-off hook state of a public network or an external data device based on a signal inputted through the connecting means;
A ringing signal transmitting means for transmitting a ringing signal via the connecting means, a document sensor for detecting that the transmitted document is set on the document reading means, and an on-off hook detecting means for detecting an on-hook state; When the specified sensor number is designated and the start key is operated in a state where the document sensor is detecting the transmitted document,
The switching means connects the second connection means to the data transmission means, sends a ringing signal from the ringing signal sending means, and when the on / off hook detection means detects an off hook detection state, the ringing signal from the ringing sending means is output. Control means for stopping transmission of the ringing signal, starting the transmission operation of the data transmission means, and inhibiting addition of predetermined image information to a transmission image in the transmission operation.

[0018]

Since the facsimile apparatus can be easily connected to the external data apparatus, the convenience in using the functions of the plotter and the scanner of the facsimile apparatus from the external data apparatus is greatly improved.

Further, since a call from the external data device and a call notification to the external data device can be appropriately performed,
The data transmission function prepared on the external data device side may be only the facsimile communication function, and the connection between the facsimile device and the external data device is very simple. At the same time, since an automatic call originating / receiving operation to the external data device is possible, the operation of exchanging data with the external data device becomes very simple.

When transmitting image information to an external data device, additional information such as transmitting terminal identification information, which is added during normal facsimile communication, is not added to the image information.
Unnecessary images are not added.

[0021]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows a data processing system according to an embodiment of the present invention. This data processing system includes a group 3 facsimile machine FX, a personal computer PC, and a personal computer P
A data modem DM for realizing a modem function required when C performs data transmission with the group 3 facsimile machine FX
It is composed of

In the group 3 facsimile machine FX, the control section 1 performs control processing of each section of the group 3 facsimile apparatus and facsimile transmission control procedure processing, and the control section 1 executes the system memory 2. A control processing program and various data required when executing the processing program are stored, and a work area of the control unit 1 is formed. A parameter memory 3 stores various types of data unique to the group 3 facsimile apparatus. Is stored.

The scanner 4 is for reading an original image at a predetermined resolution, the plotter 5 is for recording and outputting an image at a predetermined resolution, and the operation display section 6 is a facsimile apparatus. To operate,
It consists of various operation keys and various indicators.

The encoding / decoding section 7 encodes and compresses the image signal and decodes the encoded and compressed image information into the original image signal.
This is for storing a large number of image information in a coded and compressed state.

The group 3 facsimile modem 9 is for realizing a group 3 facsimile modem function, and is a low-speed modem function (V.21 modem) for exchanging transmission procedure signals and mainly exchanging image information. High-speed modem function (V.17 modem, V.17
33 modem; 29 modem, V.29. 27ter modem etc.).

The network controller 10 connects the group 3 facsimile machine FX to a public telephone line network,
This is for performing a predetermined connection process with the data modem DM, and has an automatic transmission / reception function.

The control unit 1, the system memory 2,
The parameter memory 3, the scanner 4, the plotter 5, the operation display unit 6, the encoding / decoding unit 7, the image storage device 8, the group 3 facsimile modem 9, and the network control device 10
It is connected to a system bus 11 and exchanges data between these elements mainly with the system bus 1.
One is done through.

Data exchange between the network controller 10 and the group 3 facsimile modem 9 is directly performed.

The data modem DM has the same modem function as the group 3 facsimile modem 9, and the personal computer PC transmits a predetermined group 3 facsimile transmission to and from the group 3 facsimile FX via the data modem DM. It has a facsimile application to realize the function. In this case, the facsimile application implements the encoding / decoding processing of the image data.

FIG. 2 shows a main part of the network control device 10 according to one embodiment of the present invention. In the figure, in the network control device 10, parts other than the main part of this embodiment are:
Illustration and description are omitted.

In the figure, a line L1 of the network is a common connection terminal 1 of one switching circuit 15a of two relays 15.
5ac, and the line L2 is connected to the common connection terminal 15bc of the other switching circuit 15b of the relay 15.

The normally open contact 15aa of the switching circuit 15a
Normally closed contact 1 of one switching circuit 16a of circuit relay 16
6ab and a normally closed contact 15ab of the switching circuit 15a.
Is connected to the normally open contact 16aa of the switching circuit 16a of the relay 16.

The normally open contact 15ba of the switching circuit 15b
Normally closed contact 1 of the other switching circuit 16b of the relay 16 of the circuit
6bb, and a normally closed contact 15ab of the switching circuit 15b.
Is connected to the normally open contact 16ba of the switching circuit 16a of the relay 16.

The common connection terminal 16ac of the switching circuit 16a and the common connection terminal 16bc of the switching circuit 16b are connected to the transformer 1
7 is connected to the primary winding. The secondary connection end of the transformer 17 is connected to the group 3 facsimile modem 9.

The interconnection end between the normally closed contact 15ab of the switching circuit 15a and the normally open contact 16aa of the switching circuit 16a is connected to the normally closed contact 15bb and the switching circuit 16a of the switching circuit 15b.
The interconnecting ends of the normally open contacts 16ba are connected to the data modem via appropriate connectors (not shown). A well-known hook detector 18, a ringing detector 19, and a DTMF (push button signal) are provided between the connector and the interconnecting end of the normally closed contact 15ab of the switching circuit 15a and the normally open contact 16aa of the switching circuit 16a. ) A detector 20 and a ringing signal detector 21 are connected. The DC voltage application unit 22 is connected to the data modem D.
This is for applying a DC voltage similar to that applied from the public network to M, and its operation is controlled by the control unit 1.

The hook detector 18 detects an on-off hook state, and the detection signal S1 is supplied to the control unit 1
Is output to The ringing detector 19 detects a ringing signal transmitted from the public network when an incoming call is notified, and the detection signal S2 is output to the control unit 1. The DTMF detector 20 detects a push button signal (tone signal), and the detection signal S3 is
Output to the control unit 1. The ringing signal generator 21
A ringing signal for notifying the data modem DM of an incoming call is generated.
Is controlled by the control signal SC1 output from The operation of the DC voltage application unit 22 is controlled by a control signal SC2 output from the control unit 1.

With the above configuration, the control unit 1 operates during standby,
By executing the processing of FIGS. 3 and 4, an outgoing / incoming call operation for a public network or a data modem MD (personal computer PC) is performed.

First, the start key (not shown) of the operation display unit 6 is turned on by the user, the hook detector 18 detects off-hook, or the ringing detector 19 detects a ringing signal. (NO loop of judgments 101, 102 and 103).

When the start key is turned on and the result of the judgment 101 is YES, it is checked whether or not a document sensor (not shown) of the scanner 4 detects a transmission document at that time (decision 105). , The result of decision 105 is N
When it becomes O, the switching circuits 15a, 15
b are connected to the normally open contacts 15aa and 15ba, respectively, and the switching circuits 16a and 16b of the relay 16 are connected to the normally open contacts 16aa and 16ba, respectively (process 106).

As a result, the lines L1 and L2 on the public network side are cut off, and the connector on the data modem DM side is connected to the primary winding of the transformer 17, so that
The data modem DM and the group 3 facsimile modem 9 are connected in an alternating manner via the transformer 17, and thereafter, data can be exchanged between the data modem DM and the group 3 facsimile modem 9.

In this way, the controller 1 starts a predetermined manual reception process (process 107) in a state where data exchange with the data modem DM is enabled. Therefore, when the personal computer PC executes the facsimile application in the transmission mode, a predetermined transmission procedure is executed between the personal computer PC and the facsimile machine FX, and the image information prepared by the personal computer PC is transferred to the group 3. The image is transmitted to the facsimile machine FX, and the received image is transmitted to the group 3 facsimile machine FX.
Are recorded and output from the plotter 5.

When the result of the judgment 105 is YES, it is checked whether or not the user has operated the numeric keypad (not shown) of the operation display section 6 to input the destination telephone number (decision 1).
10).

When the result of the judgment 110 is NO,
The switching circuits 15a and 15b of the relay 15 are connected to the normally open contacts 15aa and 15ba, respectively, and the switching circuits 16a and 16b of the relay 16 are respectively connected to the normally open contacts 16a and 15ba.
The connection is switched to aa and 16ba (process 111).

As a result, the lines L1 and L2 on the public network side are disconnected, and the connector on the data modem DM side is connected to the primary winding of the transformer 17, so that
The data modem DM and the group 3 facsimile modem 9 are connected in an alternating manner via the transformer 17, and thereafter, data can be exchanged between the data modem DM and the group 3 facsimile modem 9.

In this manner, the controller 1 starts a predetermined manual transmission process (process 112) in a state where data exchange with the data modem DM is enabled. In this process 112, the image of the additional information such as the transmission terminal identification information and the date is not added to the head of the transmission image.

Therefore, when the personal computer PC executes the facsimile application in the reception mode, a predetermined transmission procedure is executed between the personal computer PC and the group 3 facsimile machine FX, and the personal computer PC is set in the scanner 4 of the group 3 facsimile machine FX. The image of the transmission document is transmitted to the personal computer PC.

When the result of determination 110 is YES, whether the telephone number entered at that time matches the PC telephone number (for example, a number of about 1 to 4 digits) designating the personal computer PC. It is checked whether it is (decision 115). Here, this PC telephone number is input in advance by the user and stored in the parameter memory 3.
It is registered in.

When the result of the determination 115 is NO,
The switching circuits 15a and 15b of the relay 15 are connected to the normally open contacts 15aa and 15ba, respectively, and the switching circuits 16a and 16b of the relay 16 are respectively connected to the normally closed contacts 16a and 15ba.
The connection is switched to ab, 16bb (step 116).

As a result, the connector on the data modem DM side is disconnected, and the lines L1, L2 on the public network side are disconnected.
Is connected to the primary winding of the transformer 17, and thereafter, the group 3 facsimile apparatus FX can transmit data via the public network.

When data transmission via the public network becomes possible in this way, the control unit 1 starts a predetermined automatic transmission process (process 117), and calls a destination designated at that time. Then, the image of the transmission original set on the scanner 4 is transmitted.

When the result of determination 115 is YES, the switching circuits 15a and 15b of the relay 15 are connected to the normally open contacts 15aa and 15ba, respectively, and the switching circuits 16a and 16b of the relay 16 are connected to the normally open contacts. 16aa, 16ba (see process 12)
0).

As a result, the lines L1 and L2 on the public network side are disconnected, and the connector on the data modem DM side is connected to the primary winding of the transformer 17, so that
The data modem DM and the group 3 facsimile modem 9 are connected in an alternating manner via the transformer 17, and thereafter, data can be exchanged between the data modem DM and the group 3 facsimile modem 9.

In the state where data exchange with the data modem DM is enabled in this way, the control unit 1 generates a ringing signal from the ringing signal generation unit 21 (processing 121), and sends it to the personal computer PC. The connected data modem DM is called and its processing 12
1 is repeated until the data modem DM receives an incoming call and the off-hook detector 18 detects off-hook (decision 1).
22 NO loop).

At this time, when the data modem DM detects a ringing signal and detects an incoming call, the data modem DM notifies the facsimile application of the personal computer PC of the detection. The facsimile application instructs the data modem DM to answer the incoming call upon receiving the incoming call detection notification, whereby the data modem DM goes off-hook.

In this way, when data modem DM goes off-hook and the result of determination 122 is YES, control unit 1 starts a predetermined automatic transmission process (process 123).
In this process 123, the image of the additional information such as the transmission terminal identification information and the date is not added to the head of the transmission image.

As a result, a predetermined transmission procedure is executed between the facsimile application of the personal computer PC and the group 3 facsimile machine FX.
The image of the transmission original set on the scanner 4 of the group 3 facsimile machine FX is transmitted to the personal computer PC.

When the off-hook is detected in the standby state and the result of determination 102 is YES, the content of the push button signal detected by the DTMF detector 20 at that time is set to a preset PC telephone number. It waits until they match or the start key is turned on (NO loop of determinations 125 and 126).

When the result of the determination 125 is YES, the user receives the image information from the personal computer PC so that the personal computer P
Since the facsimile application C is executed in the transmission mode, the switching circuits 15a and 15b of the relay 15 are used.
Are connected to the normally open contacts 15aa and 15ba, respectively, and the switching circuits 16a and 16b of the relay 16 are connected to the normally open contacts 16aa and 16ba, respectively (process 127).

As a result, the lines L1 and L2 on the public network side are disconnected, and the connector on the data modem DM side is connected to the primary winding of the transformer 17;
The data modem DM and the group 3 facsimile modem 9 are connected in an alternating manner via the transformer 17, and thereafter, data can be exchanged between the data modem DM and the group 3 facsimile modem 9.

In this state, the control unit 1 starts a predetermined automatic reception process (process 128), receives image information transmitted by the facsimile application of the personal computer PC, and encodes and decodes the image information. The image signal is decoded into an original image signal by the section 7, and the image signal obtained thereby is recorded and output from the plotter 5. Thus, a hard copy output of the image formed by the personal computer PC is obtained by the plotter 5 of the group 3 facsimile machine FX.

When the start key is turned on and the result of determination 126 is YES, the relay 1
5 switching circuits 15a, 15b are respectively connected to normally open contacts 15a.
a, 15ba, and switching circuits 16a, 16b of relay 16 are normally closed contacts 16ab, 1
The connection is switched to 6bb (process 129).

As a result, the connector on the data modem DM side is disconnected, and the lines L1, L2 on the public network side are disconnected.
Is connected to the primary winding of the transformer 17, and thereafter, the group 3 facsimile apparatus FX can transmit data via the public network.

When data transmission via the public network becomes possible in this way, the control section 1 checks whether or not a transmission original is set on the scanner 4 (decision 13).
0). When the result of the determination 130 is YES, the control unit 1 starts a predetermined manual transmission process (process 131),
The image of the transmission original set on the scanner 4 is transmitted.

If the result of determination 130 is NO, control unit 1 executes a predetermined manual reception process (step 13).
2) is started, and image information from the partner terminal is received.

When the ringing detector 19 detects a ringing signal during standby and the result of the judgment 103 is YES, the control unit 1 controls the switching circuit 1 of the relay 15.
5a and 15b are connected to normally open contacts 15aa and 15ba, respectively, and the switching circuits 16a and
16b are connected to the normally closed contacts 16ab and 16bb, respectively (step 135).

Thus, the connector on the data modem DM side is disconnected, and the lines L1 and L2 on the public network side are disconnected.
Is connected to the primary winding of the transformer 17, and thereafter, the group 3 facsimile apparatus FX can transmit data via the public network.

When data transmission via the public network becomes possible in this way, the control unit 1 starts a predetermined automatic reception process (process 136), and at that time, the other terminal that has called its own terminal. Receiving the transmission image information from.

As described above, in the present embodiment, the outgoing / incoming call operation of the group 3 facsimile apparatus FX and the outgoing / incoming call operation from the personal computer PC are determined, and the manual transmission / reception processing is appropriately performed according to the determination result. Alternatively, since the automatic transmission / reception process is performed, the personal computer PC can appropriately use the functions of the scanner 4 and the plotter 5 of the group 3 facsimile machine FX.

[0070]

As described above, according to the present invention,
Since the facsimile device can be easily connected to the external data device, the effect of greatly improving the usability when using the functions of the plotter and scanner of the facsimile device from the external data device is obtained.

Further, since a call from the external data device and a call notification to the external data device can be appropriately performed,
The data transmission function prepared on the external data device side may be only the facsimile communication function, and the connection between the facsimile device and the external data device becomes very simple. At the same time, since an automatic call originating / receiving operation for the external data device is possible, an effect that the operation of exchanging data with the external data device becomes very simple can be obtained.

Further, when transmitting image information to an external data device, additional information such as transmission terminal identification information which is added during normal facsimile communication is not added to the image information.
An effect that unnecessary images are not added is also obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a data processing system according to one embodiment of the present invention.

FIG. 2 is a block diagram showing an example of a network control device according to one embodiment of the present invention.

FIG. 3 is a flowchart showing a part of an example of an outgoing / incoming call control process of the group 3 facsimile apparatus.

FIG. 4 is a flowchart showing another part of the example of the incoming / outgoing call control process of the group 3 facsimile machine.

[Explanation of symbols]

 FX Group 3 facsimile device DM Data modem PC Personal computer device 15, 16 Relay 18 Hook detector 19 Ringing detector 20 DTMF detector 21 Ringing signal generator

Claims (7)

(57) [Claims] 1. A facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data device, at least a facsimile. A data transmission means having a modem function and a facsimile transmission procedure function, a switching means for switching the first connection means or the second connection means to connect to the data transmission means, and a transmission original set on the original reading means When the start key is operated without inputting a destination in a state where the original sensor detects a transmission original, the second connection unit is switched by the switching unit to the data. Connects to the transmission means to start the transmission operation of the data transmission means, and adds predetermined image information to the transmission image in the transmission operation. A facsimile apparatus comprising a control unit for prohibiting the operation of the facsimile. 2. A facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data device, and at least a facsimile. A data transmission means having a modem function and a facsimile transmission procedure function, a switching means for switching the first connection means or the second connection means to connect to the data transmission means, and a transmission original set on the original reading means A destination for designating the external data device is input and a start key is operated in a state where the original sensor is detecting a transmission original, and the second switch is operated by the switching means. A connection unit is connected to the data transmission unit to start a transmission operation of the data transmission unit, and a transmission operation is performed in the transmission operation. A facsimile apparatus comprising a control unit for prohibiting addition of predetermined image information to an image. 3. A facsimile apparatus for exchanging data by connecting to a public network, comprising: first connecting means for connecting to a public network; second connecting means for connecting to an external data device; A data transmission unit having a modem function and a facsimile transmission procedure function; a switching unit for switching the first connection unit or the second connection unit to connect to the data transmission unit; and the first connection unit or the second connection unit. Off-hook detection means for detecting an on-off hook state of a public network or an external data device based on a signal input via the connection means; ringing signal transmission means for transmitting a ringing signal via the second connection means; A document sensor for detecting that a document is set on the document reading means; When the start key is operated in a state where the hook state is detected and the document sensor is detecting the transmission document, the first connection means is connected to the data transmission means by the switching means, and When the transmission operation of the data transmission means is started, and the start key is operated in a state where the on-off hook detection means detects the on-hook state and the document sensor detects the transmission document, the switching means By connecting the second connection means to the data transmission means, transmitting a ringing signal from the ringing signal transmission means, and detecting the off-hook detection state by the on-off hook detection means, the transmission of the ringing signal from the ringing transmission means is performed. Control means for stopping transmission and starting the transmission operation of the data transmission means. Shimiri apparatus. 4. A facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data device, at least a facsimile. Data transmission means having a modem function and a facsimile transmission procedure function; switching means for switching the first connection means or the second connection means to connect to the data transmission means; and the first connection means or the second connection means. Off-hook detection means for detecting an on-off hook state of a public network or an external data device based on a signal input via the connection means; ringing signal transmission means for transmitting a ringing signal via the second connection means; A document sensor for detecting that a document is set on the document reading means; When a predetermined telephone number is designated and the start key is operated while the hook state is being detected and the document sensor is detecting the transmission document, the second connection means is switched by the switching means. Connected to the data transmission means, transmits a ringing signal from the ringing signal transmission means, and when the on-off hook detection means detects an off-hook detection state, the transmission of the ringing signal from the ringing transmission means is stopped; A facsimile apparatus comprising a control unit for starting a transmission operation of a transmission unit. 5. A facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data device, at least a facsimile. Data transmission means having a modem function and a facsimile transmission procedure function; switching means for switching the first connection means or the second connection means to connect to the data transmission means; and the first connection means or the second connection means. An off-hook detecting means for detecting an on-off hook state of a public network or an external data device based on a signal input through the connecting means; an original sensor for detecting that a transmission original is set on the original reading means; In a state where the hook detecting means has detected the on-hook state and the document sensor has detected the transmitted document, When the start key is operated, the switching means connects the second connection means to the data transmission means to start a transmission operation of the data transmission means, and adds predetermined image information to a transmission image in the transmission operation. A facsimile machine comprising a control unit for prohibiting the facsimile operation. 6. A facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data device, at least a facsimile. Data transmission means having a modem function and a facsimile transmission procedure function; switching means for switching the first connection means or the second connection means to connect to the data transmission means; and the first connection means or the second connection means. Off-hook detection means for detecting an on-off hook state of a public network or an external data device based on a signal input via the connection means; ringing signal transmission means for transmitting a ringing signal via the second connection means; A document sensor for detecting that a document is set on the document reading means; Have detected a hook state and in a state where the document sensor has detected the transmitted document, when the start key is operated, the second connecting means connected to said data transmission means by said switching means,
When a ringing signal is transmitted from the ringing signal transmitting means and the on-off hook detecting means detects an off-hook detection state, the transmission of the ringing signal from the ringing transmitting means is stopped and the transmission operation of the data transmitting means is started. A facsimile apparatus comprising a control unit for prohibiting addition of predetermined image information to a transmission image in the transmission operation. 7. A facsimile apparatus for exchanging data by connecting to a public network, a first connecting means for connecting to a public network, a second connecting means for connecting to an external data device, at least a facsimile. Data transmission means having a modem function and a facsimile transmission procedure function; switching means for switching the first connection means or the second connection means to connect to the data transmission means; and the first connection means or the second connection means. Off-hook detection means for detecting an on-off hook state of a public network or an external data device based on a signal input via the connection means; ringing signal transmission means for transmitting a ringing signal via the second connection means; A document sensor for detecting that a document is set on the document reading means; When a predetermined telephone number is designated and the start key is operated while the hook state is being detected and the document sensor is detecting the transmission document, the second connection means is switched by the switching means. Connected to the data transmission means, transmits a ringing signal from the ringing signal transmission means, and when the on-off hook detection means detects an off-hook detection state, the transmission of the ringing signal from the ringing transmission means is stopped; A facsimile apparatus comprising: a control unit that starts a transmission operation of a transmission unit and prohibits addition of predetermined image information to a transmission image in the transmission operation.