JPH09247294A - Communication device and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable G3 facsimile to provide facsimile transmission and telephone calling through a single line at the same time. SOLUTION: A DSU 13 receives a G3 facsimile signal and G4 facsimile signal from a public network 19. When a G4 facsimile signal is received, the DSU 13 separates the channel of a telephone call signal and the channel of the facsimile signal and outputs the telephone call signal to a speech control part 15 and the facsimile signal to an image memory 10 through a G4/G3 decision circuit 141 and a G4CCU 143. A G3 facsimile signal, on the other hand, is decided as G3 by the G4/G3 decision circuit 141 and inputted to an SVD 144 through an A/D and D/A converter 142. The SVD 144 separates the G3 facsimile signal and speech signal from a signal for PSTN and outputs the speech signal to the speech control part 15 and facsimile signal to the image memory 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a new device applicable to a facsimile machine and a control method therefor.

[0002]

2. Description of the Related Art In the age of multimedia computers, various communication terminals have been proposed and developed. Multimedia will only come into play when it comes to digital lines (ISDN), as seen in the US Super Information Highway. However, in reality, telephone lines (analog lines: PSTN) are still in widespread use throughout the world. ISD
Although N has been commercialized for nearly 10 years, the current situation is that development is slow and rapid growth cannot be expected.

The G4 facsimile developed for ISDN has good image quality, high speed, and is delicate, and is widely adopted by a specific company. Another characteristic of ISDN is that it is possible to connect eight terminals with one line.

Generally, in a G4 facsimile using an ISDN line, eight terminals can be connected via a line terminating device (DSU), so that a telephone call is possible while transmitting and receiving a facsimile on one line.

However, in the telephone line (PSTN), the facsimile and the telephone cannot be used on the same line at the same time, and it is necessary to provide separate lines or switch and use the lines.

[0006]

As described above, when trying to make a call while transmitting / receiving a facsimile, another line is required, resulting in an increase in cost. That is,
In the conventional G3 facsimile apparatus, an independent line is required for each of the facsimile and the telephone in order to carry out a telephone call at the same time while transmitting an image on one line. Therefore, line construction and charges are doubled, which is not economical.

It is obvious that the convenience will be improved if it is possible to hold a meeting by telephone while transmitting and receiving a facsimile with the diversification of business.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a communication apparatus and method capable of simultaneously performing a facsimile transmission and a telephone call on one line in a G3 facsimile. .

[0009]

The communication device of the present invention for achieving the above object has the following configuration. That is, the G3 facsimile signal and the call signal are separated from the first receiving means for receiving the signal in which the G3 facsimile signal and the call signal are transmitted on one line and the signal received by the first receiving means. The first separating means, the voice processing means for performing voice processing on the call signal separated by the separating means, and the image processing means for performing image processing on the G3 facsimile signal separated by the separating means.

Further, preferably, the separating means is an SV.
It is a D modem. This is because applying the known SVD modem facilitates the application of the present invention.

Further, preferably, the second receiving means for receiving a signal in which the G4 facsimile signal and the call signal transmitted on the ISDN line are mixed, and the G4 facsimile signal and the call signal received by the second receiving means are separated. The voice processing means processes the call signal separated by the second separating means, and the image processing means processes the G4 facsimile signal separated by the second separating means. This is because the G4 / G3 facsimile can be integrated.

[0012] Preferably, the voice processing means is
The call signal separated by the first or second separating means is output to the telephone. In both G4 and G3 facsimile transmission, facsimile transmission and telephone call can be performed.

Preferably, the voice processing means is
The call signal separated by the first or second separating means is stored in a memory. This is because the call content can be stored.

Preferably, the image processing means is
Image formation is performed based on the supplied G3 or G4 facsimile signal.

Also, it is preferable that G
It further comprises sending means for generating a 3 facsimile signal or a G4 facsimile signal and transmitting the generated facsimile signal in a form in which a call signal can be mixed.

Further, preferably, based on the storage means for storing the data for the call signal to be transmitted on the line and the data stored in the storage means, I
A broadcast means is further provided for generating a call signal for the SDN line and a call signal for the PSTN line and carrying out a broadcast to a plurality of designated destinations. ISDN line terminal or PS as a partner device
Even if TN line terminals are mixed, broadcast transmission is possible.

Further, preferably, in response to a data request from the outside, a storage means for storing data for a call signal to be sent out on the line, and in response to a communication mode provided by the data request source, It further comprises polling means for generating a call signal for ISDN line or a call signal for PSTN line based on the data stored in the storage means and sending this to the data request source. ISDN line terminal and PS
It becomes possible to send data to the request source according to the data request from the TN line terminal, and a polling function is provided.

Preferably, the first receiving means and the second receiving means receive a G3 facsimile signal and a G4 facsimile signal through a common ISDN line, and the facsimile signal received by the receiving means is G3. And a supply unit that supplies the facsimile signal to the first separation unit when the received facsimile signal is determined to be G3 by the determination unit. . Simply connect to one ISDN line that is connected to the PSTN line
3 and G4 facsimile transmission are possible, and at the same time, it is possible to simultaneously perform facsimile transmission and a telephone call on one line regardless of whether G3 facsimile transmission or G4 facsimile transmission.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

[First Embodiment] Digital facsimiles (hereinafter referred to as G4 facsimiles) have become popular in recent years. As mentioned earlier, the majority of lines currently exist are telephone lines (PSTN). Therefore, G4 facsimile is G
3 If it cannot be used as a facsimile, its use as a facsimile will be limited. Therefore, most of the G4 facsimiles on the market have the function of the G3 facsimile. Some high-end models have a G4 / G3 mutual conversion function in a facsimile terminal.

However, when the G3 facsimile function is used to perform the facsimile transmission and the telephone conversation at the same time, separate telephone lines are required as described above.

FIG. 5 is a diagram showing the structure of a general G4 facsimile.

The facsimile of FIG. 5 is positioned as an in-house OA center machine and has a G4 / G3 conversion function.

A reader unit, a printer unit, and a controller unit are integrated. This facsimile apparatus is a PPF (plain paper facsimile) in which an LBP (laser beam printer) is used in the printer section.

The reader section is composed of three elements: exposure scanning, CCD as a photoelectric conversion section, and an image processor. The printer section is composed of an image forming section, laser modulation, electrophotographic process, payment, and transport mechanism section. The controller unit performs communication control itself, and includes a coding / decoding unit (CODEC) including an image processor, a high-speed encoder, and a high-speed decoder, a memory, a line control unit (CC).
U).

The high-end machine of the conventional example shown in FIG. 5 has an OA interface (not shown) and can interface with a personal computer or a word processor, and can be used as a printer or a digital copying machine. It is also possible to send / receive data created by a personal computer as image data by a G4 / G3 facsimile.

This embodiment described below is disclosed in Japanese Patent Laid-Open No. 7-
SVD (Simultaneous Voice a) disclosed in 30605.
nd Data) modem so that telephone calls can be made while transmitting and receiving facsimiles like ISDN even when using a telephone line.

FIG. 1 is a block diagram showing the configuration of the facsimile apparatus according to this embodiment.

Reference numeral 1 denotes a communication control unit of this apparatus. In the communication control unit 1, 2 is a system controller, which controls the communication control unit 1 and the entire apparatus. As the main CPU incorporated in the system controller 2, for example, Intel 486DX or the like can be applied. Further, the system controller 2 is assumed to be equipped with a control OS.

3 is an LC interface (LCI / F)
The scanner 1 communicates with the scanner 17 and the printer 18 for commands and status (serial signal), and the scanner 1
7. The operation of the printer 18 is controlled. An image processing unit (VC) 4 performs various kinds of image processing. For example, LC
The image signal sent from the I / F 3 is binarized into a character original in a mode set by the system controller 2,
Binarization by dither halftone or image area separation of an image in which photographic characters are mixed is performed. Further, date, time, etc. are added as additional information to the screen of the transmitted / received image.

Reference numeral 5 denotes an image processing unit (VC), but here, conversion processing is performed on the binary image from the preceding stage (image processing unit 4). For example, there are size conversion, reduction, enlargement, density conversion, resolution conversion (400 DPI ← → 200 DPI) and the like. Reference numeral 6 denotes a coding / decoding device (CODEC), which compresses the image processed by the preceding stage (image processing unit 5) by the encoder. Here, encoding is performed using any one of the image compressions MMR, MR, and MH according to the mode designated by the system controller 2. This encoding is very fast and is performed in real time at the same speed as the scanner reading operation.

A FIFO 7 executes speed conversion of input / output data to / from the image memory and word length conversion.
The FIFO 7 performs 16-bit parallel conversion to 32-bit parallel conversion when writing to the memory. Also, when reading out, 3
Performs 16-bit parallel conversion from 2-bit parallel. The memory capacity of this FIFO is 8 × 32 bits.

Reference numeral 8 denotes a system bus, which connects the components shown in FIG. 1 so that they can communicate with each other.

A memory controller 9 controls the image memory 10, the magnetic memory 11, and the audio memory 12. The encoded image is temporarily stored in the image memory 10 via the buffer memory of the FIFO 7. Those that need to be stored for a long period of time are moved to the magnetic memory 11. Here, a magnetic disk is generally used as the magnetic memory 11. However, in recent years, memory has been remarkably developed, and in many cases, a magneto-optical disk is used instead of the magnetic disk. This has a storage capacity of 680 MB, and if it has a plurality of these, it will have a function as a file server. In this case, 100,000 sheets can be stored in the A4 standard chart.

A line terminating device (DSU) 13 inputs digital signals and analog signals from the public network.
The DSU 13 sends a telephone signal via the ISDN line to the voice control unit 15. A G4 / G3 line control unit (CCU) 14 outputs an image obtained by facsimile transmission of the ISDN line to the system bus 8. When the facsimile data and the call signal are transmitted from the PSTN line, the call signal (the voice signal is separated and output to the voice control unit 15 and the facsimile image is output to the system bus 8. The above-mentioned DSU 13 and G4 / G3CCU
The line control unit 100 in the facsimile apparatus of the present embodiment is formed by 14.

Reference numeral 15 is a voice control unit, which receives a voice signal from a telephone call, rings the telephone 16 and stores voice data in the voice memory 12.

In the above configuration, the CODEC 6
The code data compressed and encoded by the
Is written in the image memory through the write FIFO.
The code data received by the G4 / G3 CCU 14 is also written in the image memory 10. Image memory 1
The code data stored in 0 is read by the FIFO F7.
It is read by the IFO, decoded into the original image signal by the CODEC 6, and transmitted by the G4 / G3CCU 14.

A voice or image signal input from the public network 19 is received by this device via the DSU 13. Here, the telephone of the ISDN line is a voice control unit 1 from the DSU 13.
5, the facsimile image signal is G4 / G3CCU
It is stored in the image memory 10 via 14. Telephone network (P
Facsimile signals and voice signals from the STN line)
The 4 / G3CCU 14 discriminates the voice signal to the voice control unit 15 and the facsimile signal to the image memory 10. Although this will be described later with reference to FIG. 2, in this embodiment, since the SVD modem is used, it is possible to simultaneously transmit and receive the image and the sound using the telephone line.

Now, the voice is connected to the telephone 16 through the path of FIG. 1 to ring the telephone 16, and the call becomes possible. There is also an answering machine function. In this case, the voice control unit 15 compresses the voice and stores it in the voice memory 12. That is, it has a voice memory function. Further, even during a call, the voice signal can be compressed and stored in the voice memory 12 by an operation button (not shown).

An external OA device such as a personal computer (hereinafter referred to as a personal computer PC) can be accessed through the OA interface 20. As a result, the characters and image information created on the personal computer PC are
It can be transmitted via the public network 19 using the G4 and G3 protocols. In this case, characters and image signals input from the personal computer PC via the OA interface 20 are stored in the image memory 10 by a command from the personal computer PC. On the other hand, the received images stored in the image memory 10 are
It is sent to the CODEC 6 via the buffer memory of the FIFO 7, and the image is compressed according to the ITU standard of MMR, MR, or MH according to the mode specified by the system controller 2, converted into a binary image, and converted to the next stage. Passed to.

In the copy mode, the data flows through the path as shown in FIG.
The image signal read by is relayed to the printer 18.

In the facsimile mode, in the path indicated by, the speed of the image signal read by the scanner 17 is converted into the transmission speed. Further, a margin defined by the ITU standard is added to the image read by the scanner 17. On the other hand, when receiving a facsimile, the signal speed is increased from the margin removal and transmission speed, and then output to the printer.

When the image input / output operation of the communication apparatus shown in FIG. 1 is arranged, the path: image reading from the scanner to the memory (transmission image) path: image output from the memory to the printer (reception image) path: Local copy (copying function) Path: Image conversion (density at transmission and reception, paper size conversion) Path: G4 / G3 Connection between line and memory (G4 / G3
Image transmission / reception) Path: Public network and voice connection (ISDN and analog telephone) Path: OA device and interface (SCSI, RS)
232C, etc.) A communication workstation with seven paths.

Next, based on FIG. 2, the SV characterizing the present proposal
The relationship of D will be described. FIG. 2 is a block diagram illustrating the configuration of the line control unit in this embodiment.

In FIG. 2, the same components as those in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted here. Reference numeral 21 is an ordinary telephone network (PSTN), and 22 is an ISDN network. These networks are connected to each other and run into each other. Therefore, in the following description, these are collectively referred to as the public network 19. 2 is a communication workstation equipped with a G4 / G3 facsimile,
It can be accessed from anywhere using G3 facsimile, G4 facsimile and telephone terminals.

In the G4 / G3 CCU 14, 141 is a G4 / G3 discriminating circuit and discriminates whether the signal input from the DSU 13 is a G4 facsimile signal or a G3 facsimile signal. 142 is A / D and D / A
The converter is a converter for converting a digital signal input from the ISDN line into an analog signal or converting an analog signal input from the SVD 144 into an ISDN line for digital signal output. 144 is an SVD, which is a telephone line (P
The STN) enables simultaneous transmission of a facsimile signal and a call signal.

As an example, the case where a G3 facsimile and a telephone are input via the ISDN network will be described below. FIG. 6 is a flowchart showing a processing procedure at the time of facsimile reception in this embodiment.

The G3 facsimile signal and the analog telephone signal input from the PSTN 21 are transferred to the line terminating unit DSU1.
It is input to the G4 / G3 discrimination circuit 141 via 3 (step S11). As another example, a G4 facsimile terminal may be independently provided with a G3 CCU. In this case, there is an advantage that the conventional analog telephone number can be used as it is, but recently, there has been an increasing number of cases in which one line is connected to G4 and G3 by the network connection as in this example.

As mentioned above, ISDN is a basic mode I
In NS64, eight terminals can be connected from DSU13.
However, conventional telephone networks can only use one-line terminals. Therefore, by using an SVD modem, two pieces of information can be transmitted at the same time.

When the G4 / G3 discrimination circuit 141 determines that the signal is a G3 facsimile signal, A / D and D /
The analog signal is converted by the A converter 142 (steps S12 and S13). On the ISDN network, the image signal of the G3 facsimile is also converted into digital and sent. Therefore, the analog signal is again converted by the A / D and D / A converter 142 and input to the SVD 144 (step S1).
4).

Basically, the SVD 144 causes an analog signal and a digital signal to coexist in the same frequency body and simultaneously transmit them by QAM modulation. An analog signal is added to a data signal that defines a symbol (a signal point) in the symbol constellation, and a mixed signal is transmitted to the receiving side.

Further, in the SVD 144, an analog signal,
That is, the data transmission speed is improved by identifying the period close to silence. In this case, it is usually 14.4 Kbps,
Only when analog voice is added, the data transmission speed becomes slightly slower. However, since voice has many breaks between words and is quite long on the time axis, practically no delay in speed is felt even when a facsimile and a telephone are used together.

When a voice signal and a facsimile signal are transmitted at the same time, the voice signal is transmitted by the voice control unit 15 by the SVD 144.
Is input to Normally, the audio signal is also compressed, so
The voice control unit 15 decompresses this and returns it to the original state, and rings the telephone 16 via the system bus 8 to enable communication (steps S15 and S16).

On the other hand, the facsimile signal is supplied from the SVD 144 to the printer 18 via the communication control unit 1 and printed on the recording paper (steps S15 and S17). or,
It is stored in the image memory 10 or the magnetic memory 11 such as a hard disk as required. Then, step S18
In step S11, it is determined whether or not the facsimile reception is completed. If the facsimile reception is not completed yet, the process returns to step S11. On the other hand, when the facsimile reception is finished, this processing is finished.

When the G4 facsimile and the ISDN telephone are simultaneously input, the process proceeds from step S12 to step S19, and the receiving process by G4 is performed. That is,
The DSU 13 guides the voice signal to the voice controller 15 and the facsimile signal to the G4 / G3 discriminating circuit 141, respectively. Then, the voice signal is decompressed and restored by the voice control unit 15 and guided to the telephone 16.

On the other hand, the G4 facsimile signal is G4 / G
It is output from the 3 discriminating circuit 141 to the G4CCU 143.
Then, the facsimile signal is supplied from the G4CCU 143 to the printer 18 via the communication control unit 1. Or,
The facsimile signal is stored in the image memory 10.

Next, the case of performing facsimile transmission will be described. FIG. 7 is a flowchart showing a processing procedure at the time of facsimile transmission in this embodiment. When performing facsimile transmission, the image read by the scanner 17 is processed by the communication control unit 1, and when the destination facsimile is G4, G
It is transmitted to the public network 19 via the 4CCU 143 (steps S31, S32, S36). On the other hand, if the destination facsimile is a G3 facsimile, SVD144
After that, it is converted to digital by the A / D and D / A converter 142 and transmitted to the public network 19 (step S
31, S32, S33, S34, S35). Where S
Since it is output to the line via the VD 144, the G3
In facsimile transmission, it becomes possible to make a call at the same time.

FIG. 4 is a diagram showing the overall configuration of the communication terminal device according to the present embodiment. In the figure, 101 is a memory unit, which is the memory controller 9 and the image memory 1 described above.
0, voice memory 12.

Compared with the conventional G4 / G3 facsimile,
Even when transmitting a G3 facsimile using the conventional telephone network, both the telephone and the facsimile can be used simultaneously on the same line. Further, in ISDN, of course, by using a sub address, a facsimile and a telephone can be simultaneously used on the same line. Therefore, business convenience is improved and usability is improved.

Further, even when G4 and G3 facsimiles coexist as a partner's terminal and there are a large number of terminals, the facsimile apparatus of this embodiment can broadcast to the G3 and G4 facsimiles as well as polling. Is.

Further, when the other party's terminal or telephone exchange has a voice mail function, similarly, it is possible to broadcast the voice, poll by voice mail, and also to use the ISDN and the telephone line together. . That is, voice mail using analog and digital lines can be performed, and voice broadcast and polling can be performed as in the case of facsimile. In the case of voice mail, the contents to be transmitted are stored in advance in the voice memory of the communication terminal, and the broadcast and polling are performed as in the case of the facsimile. In this way, voice mail can be sent to a terminal connected to the public network 19, such as a telephone line or an ISDN line.

[Second Embodiment] FIG. 3 is a block diagram showing the arrangement of a line controller of a facsimile apparatus according to the second embodiment. Here, in the communication terminal, ISDN
It has a telephone line independent of the line. As mentioned above, in this case, the telephone number remains the same as before, and the G3 facsimile,
You will be able to access the phone at the same time. In FIG. 3, reference numeral 31 is a telephone network, 32 is an ISDN network, and 33 is an SV.
D modem, 34 DSU (line terminating device), 35 voice control unit, 36 G4CCU, 37 system bus. The other configuration for forming the facsimile device is the same as that of the facsimile device of the first embodiment.
In addition, the SVD33, DSU34, voice control unit 35, G4
The CCU 36 and the system bus 37 are the SVD 14 of FIG. 2, respectively.
4, the DSU 13, the voice control unit 15, and the system bus 8 have the same functions.

In the second embodiment, PSTN31
Since the ISDN 32 and the ISDN 32 are separately fetched, the G4 / G3 discrimination circuit 141 and the A / D and D as in the first embodiment.
The / A converter 142 becomes unnecessary.

When the G3 facsimile signal and the call signal are received from the PSTN 31, the SVD 33 sends the call signal to the voice control unit 35 and sends the facsimile signal to the system bus 3.
7 The subsequent processing is the same as that of the first embodiment. When the G4 facsimile signal and the call signal are received from the ISDN 32, the DSU 34 sends the call signal to the voice control unit 35 and the facsimile signal to the G4CCU3.
6 is output.

As described above, the SVD modem is connected to the G4 / G
By using it as a communication controller for 3 facsimile terminals, simultaneous transmission and reception of images and voices on the same line, which was previously possible only with ISDN, is now possible on the telephone line. Therefore, in the G4 / G3 facsimile, the simultaneous use of the telephone and the facsimile, which was conventionally possible only in the G4, can be performed in the G3 facsimile, and the convenience of use is improved.

Even when the present invention is applied to a system composed of a plurality of devices (for example, host computer, interface device, reader, printer, etc.), it can be applied to a device composed of one device (for example, a facsimile machine). You may apply.

[0067]

As described above, according to the present invention, it is possible to make a telephone call by facsimile and telephone on one line simultaneously with ISDN on the telephone line.

Similar to facsimile, voice mail can be sent to a terminal connected to ISDN or telephone line, and voice polling is possible.

A personal computer connected to the OA interface of this terminal device can also communicate with a terminal connected to the ISDN or telephone line.

[0070]

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a facsimile apparatus according to this embodiment.

FIG. 2 is a block diagram illustrating a configuration of a line control unit according to the present embodiment.

FIG. 3 is a block diagram showing a configuration of a line controller of a facsimile apparatus according to a second embodiment.

FIG. 4 is a diagram showing an overall configuration of a communication terminal device according to the present embodiment.

FIG. 5 is a diagram showing a configuration of a general G4 facsimile.

FIG. 6 is a flowchart showing a processing procedure at the time of facsimile reception in the present embodiment.

FIG. 7 is a flowchart showing a processing procedure at the time of facsimile transmission in this embodiment.

[Explanation of symbols]

 1 Communication Control Unit 2 System Controller 3 LC Interface 4, 5 Image Processing Unit 6 CODEC 7 FIFO 8 System Bus 9 Memory Controller 10 Image Memory 11 Magnetic Memory 12 Voice Memory 13 DSU 14 G4 / G3CCU 15 Voice Control Unit 16 Telephone 17 Scanner 18 Printer 19 Public Network 20 OA Interface 141 G4 / G3 Discrimination Circuit 142 A / D and D / A Converter 143 G4CCU 144 SVD

Claims (13)

[Claims] 1. A first receiving means for receiving a signal containing a mixture of a G3 facsimile signal and a call signal transmitted on one line, and a G3 facsimile signal and a call signal from the signal received by the first receiving means. First separation means for separating the speech signal, voice processing means for performing voice processing on the call signal separated by the separation means, and image processing means for performing image processing on the G3 facsimile signal separated by the separation means. A communication device characterized by. 2. The communication device according to claim 1, wherein the separating means is an SVD modem. 3. A second receiving means for receiving a signal mixed with a G4 facsimile signal and a call signal transmitted on the ISDN line, and a second for separating the G4 facsimile signal and the call signal received by the second receiving means. The audio processing means processes the call signal separated by the second separating means, and the image processing means processes the G4 facsimile signal separated by the second separating means. The communication device according to claim 1. 4. The communication device according to claim 3, wherein the voice processing means outputs the call signal separated by the first or second separating means to a telephone. 5. The communication device according to claim 3, wherein the voice processing means stores a call signal separated by the first or second separating means in a memory. 6. The communication apparatus according to claim 3, wherein the image processing means forms an image based on the supplied G3 or G4 facsimile signal. 7. A transmission means for generating a G3 facsimile signal or a G4 facsimile signal in accordance with a destination device and transmitting the generated facsimile signal in a form in which call signals can be mixed. The communication device according to 1. 8. A storage unit for storing data for a call signal to be transmitted on a line, and a call signal for an ISDN line and a PSTN line according to a destination device based on the data stored in the storage unit. The communication device according to claim 3, further comprising a broadcast unit that generates a call signal and broadcasts to a plurality of designated destinations. 9. A storage means for storing data for a call signal to be transmitted on a line, and the storage means in response to a data request from the outside according to the communication mode of the data request source. Call signal for ISDN line or P based on the stored data
4. The communication device according to claim 3, further comprising polling means for generating a call signal for STN line and transmitting the call signal to the data request source. 10. The first receiving means and the second receiving means receive a G3 facsimile signal and a G4 facsimile signal via a common ISDN line, and whether the facsimile signal received by the receiving means is G3 or G4. Determining means for determining whether or not the received facsimile signal is G
The communication device according to claim 3, further comprising: a supply unit that supplies the facsimile signal to the first separation unit when it is determined to be 3. 11. A first receiving step of receiving a signal in which a G3 facsimile signal and a call signal transmitted on one line are mixed, and a G3 facsimile signal and a call signal based on the signal received in the first receiving step. A voice processing step of performing voice processing on the call signal separated in the separation step, and an image processing step of performing image processing on the G3 facsimile signal separated in the separation step. And a method for controlling a communication device. 12. A second method for receiving a signal in which a G4 facsimile signal and a call signal mixedly transmitted on an ISDN line are received.
The method further comprises a receiving step and a second separating step for separating the G4 facsimile signal and the call signal received in the second receiving step, wherein the voice processing step uses the call signal separated in the second separating step as the image. The method of controlling a communication device according to claim 11, wherein the processing step processes the G4 facsimile signal separated in the second separating step. 13. The first receiving step and the second receiving step receive a G3 facsimile signal and a G4 facsimile signal via a common ISDN line, and whether the facsimile signal received in the receiving step is G3 or G4. And a step of determining whether the received facsimile signal is G
The control method of the communication device according to claim 12, further comprising a supply step of supplying the facsimile signal to the first separation step when it is determined to be 3.