JP2000201249A - Facsimile equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use equipment in accordance with the purpose and the use state of a user by judging whether facsimile data can be received or not, storing facsimile data in a storage means when reception is judged to be impossible, recording it in recording paper when reception is judged to be possible and selecting both of them. SOLUTION: The transmission/reception of encoding picture data and a command between facsimile equipment and a personal computer 4 are executed by interruption. An interruption signal is emitted when data of eight bits is stored in a P/S reception data buffer 246 and when a P/S transmission data buffer 248 becomes idle. The execution of an interruption processing program on the interruption signal is inhibited or permitted by the setting/resetting of a data reception interruption inhibition flag 243 and a data transmission interruption inhibition flag 244, which are installed in a parallel/serial conversion circuit 240. The data reception interruption inhibition flag 243 is always set in an interruptible state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus connected to a computer and used.

[0002]

2. Description of the Related Art A facsimile apparatus of this type has a connection portion with another facsimile data transmission device and a connection portion with a computer.

The facsimile data transmitting device may be any device having a function of transmitting facsimile data. For example, a device having only a facsimile data transmitting function and transmitting facsimile data to a data processing device such as a computer may be used. It may be a device that has an image reading device, creates facsimile data based on image data obtained by reading, and transmits the facsimile data. In addition to a facsimile data transmission function, a reception function and facsimile data are output to a recording sheet. It may be a device having a recording function to perform the recording.

According to this type of facsimile apparatus, for example, as disclosed in Japanese Patent Application Laid-Open No. 60-48661, a computer reception control means is provided to transmit facsimile data transmitted from a facsimile data transmission apparatus to a computer. And the storage means of the computer can be used for accumulating the facsimile data, or the facsimile data can be edited and corrected using the computer.

[0005]

However, in general, a facsimile apparatus is always operated day and night, but a computer is turned on or off according to the purpose of a user. The case is common. For this reason, if facsimile data transmitted from another facsimile machine is always sent to a computer, an operation of recording by operating the computer to output the data to paper is required, and it is not always efficient.

Further, when the computer cannot receive the data, simply storing the facsimile data transmitted from the other facsimile apparatus in the memory of the facsimile apparatus requires the user to turn on the power of the computer to confirm that the facsimile has arrived. You will not be able to confirm it until you put it in.

According to the present invention, there is provided a facsimile machine which can select to directly output facsimile data transmitted from another facsimile data transmitting apparatus to a paper or to store the facsimile data in a computer according to the purpose and use state of a user. It has been made to provide an apparatus.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a facsimile apparatus having a connection part to another facsimile data transmitting apparatus and a connection part to a computer, wherein the computer is capable of receiving facsimile data. Facsimile data reception availability determination means for determining whether or not there is a facsimile data reception mode, and a mode for storing facsimile data in the storage means when the facsimile data reception availability determination means determines that the computer is unreceivable. And a selection means for selecting a computer preferential reception mode for recording on a recording sheet. Also, more preferably,
A facsimile device having a connection with the other facsimile data transmission device and a connection with a computer,
Facsimile data storage means for storing facsimile data transmitted from the other facsimile data transmission apparatus, facsimile data recording means for recording facsimile data transmitted from the other facsimile data transmission apparatus, and the facsimile Facsimile data receivability determining means for determining whether data can be received, a paper output mode for recording the facsimile data by the facsimile data recording means, and a computer receivable by the facsimile data receivability determining means. Is determined, the facsimile data is stored in the facsimile data storage means in the computer reception mode, and the facsimile data reception availability determination means determines that the computer is unreceivable. It is solved by providing a selection means for selecting a computer-priority receive mode for recording the facsimile data if it is.

[0009]

In the facsimile apparatus according to the present invention, facsimile data transmitted from another facsimile data transmitting apparatus is stored in facsimile data storage means, and facsimile data transmitted from the other facsimile data transmitting apparatus is facsimile data. It is recorded on recording means. A paper output mode in which the facsimile data is recorded by the facsimile data recording means;
A computer receiving means for storing the facsimile data in the facsimile data storage means when the computer determines that the facsimile data cannot be received by the facsimile data reception availability determination means for determining whether or not the computer can receive facsimile data; A mode and a computer priority reception mode in which the facsimile data is recorded when the facsimile data reception availability determination unit determines that the computer cannot receive the data are selected by the selection unit.

The facsimile data reception availability determination means includes:
For example, whether or not the computer cannot receive the facsimile data is determined based on the reception related information of the computer.

The simplest example of the reception-related information of a computer is a facsimile data reception disable signal indicating that reception of facsimile data output from the computer is not possible or facsimile data indicating that transmission of facsimile data is prohibited. This is a transmission prohibition signal.
However, if a facsimile data receivable signal indicating that facsimile data can be received or a facsimile data transmission permitting signal indicating that facsimile data transmission is permitted is output from the computer, these are also transmitted. It can be regarded as information indicating that reception is impossible. This is because the fact that the facsimile data receivable signal or the facsimile data transmission permission signal is not output usually indicates that the reception of facsimile data is impossible.

In this sense, a facsimile data reception disable signal or a facsimile data transmission inhibit signal,
The facsimile data receivable signal or the facsimile data transmission permission signal are substantially the same.

These signals may be constituted by, for example, a high voltage and a low voltage of a predetermined signal line.
It may be constituted by bit data supplied to a data line shared with other data. In the latter case, the data may be single-bit data or multi-bit data.

The causes of the inability of the computer to receive facsimile data include, for example, that the computer is not connected to the facsimile machine, that the computer is turned off, and that the computer has a program for receiving facsimile data. The facsimile data receiving program is stored, but the execution of the program is not instructed in the computer, the facsimile data storage means of the computer has no room for further storing the facsimile data, A program other than data reception may be in execution.

[0015] Of these, in the case of (1), it can be expected that the computer itself outputs the reception-related information, but in the case of (3), it cannot be expected. However,~
Obtaining any signal that represents each situation of means that there is no and situation, and
It can be considered that the signal indicating the situation of the above also serves as the signal indicating that the situation is not the same.

Further, the facsimile apparatus confirms the existence or non-existence of situations such as (1) to (3) from the output of a signal indicating the existence or non-existence of those situations, or the non-output of the signal. It is also possible.

For example, the situation that "the computer is not connected to the facsimile machine" can be confirmed by the facsimile machine either by a signal indicating that it is not connected or by a signal indicating that it is connected. It is. This is because one negative is a positive one. Further, the facsimile machine can confirm that the computer is not connected since the signal indicating that the computer is connected is not output, and vice versa.

As described above, there are a plurality of types of non-reception situations (or causes of non-reception), and the computer confirms the existence of all situations. When the facsimile data reception disable signal or the facsimile data transmission prohibition signal is output, the facsimile apparatus can know that the computer cannot receive the facsimile data by receiving one of the signals.

When the facsimile data receivable signal or the facsimile data transmission permission signal is output from the computer, the facsimile apparatus is in a state where the computer cannot receive the facsimile data because the signal is not output. You can know. In the embodiment described later, it is determined that the computer is in a state where it is impossible to receive facsimile data based on the absence of a command output from the facsimile apparatus to the computer, for example, a command for notifying the transmission of facsimile data. Is an example.

The facsimile apparatus is based on a plurality of signals supplied from the computer or information obtained by the facsimile apparatus itself (for example, information on whether or not a computer is connected can be obtained by the facsimile apparatus itself). It is also possible to determine the situation related to the reception of the computer at.

In this case, the information supplied from the computer may be information corresponding to each of the plurality of types of non-reception causes described above, or information corresponding to a plurality of causes.

The determination that the facsimile machine cannot receive the computer can be performed by the computer even if at least one piece of information indicating that the computer cannot receive the facsimile data is obtained. This can also be performed when at least one piece of information indicating the fact cannot be obtained.

Further, it is possible that the computer confirms that facsimile data can be received. If the confirmation is not possible, it is possible to determine that facsimile data cannot be received.

Note that some of the computer reception-related situations, as described above and (especially), change with the operation of the computer and have a high frequency of change. As described above, there is a situation in which the change is not caused by the operation of the computer but is changed by the operation of the operator or the like, and the change frequency is low, so that it is unlikely that the change will occur even if the user waits.

The computer reception related information corresponding to these situations also includes high change frequency information or high change possibility information and low change frequency information or low change possibility information (however, one computer reception related information). If both correspond to both a high change frequency situation and a low change frequency situation, it is regarded as high change frequency information.) Therefore, the means for determining whether or not facsimile data can be received by the computer based on the information also includes a prompt decision type determination means for immediately determining the reception-related state of the computer,
Providing grace-type determination means for determining over time, that is, waiting for a set time even if the computer cannot receive facsimile data at a certain point in time, and determining whether or not the computer will be ready to receive during that time Is desirable.

At the start of receiving facsimile data, the computer determines whether facsimile data can be received. If facsimile data can be received, facsimile data is directly transmitted to the computer without storing the facsimile data in the facsimile data storage means. Is also good. At the start of facsimile data reception, the reception permission / non-permission determination means determines whether or not reception is possible, and the facsimile data direct transmission means transmits facsimile data directly to the computer.

The facsimile data is output prior to the transmission of the image data, during the transmission of the image data, or at the end of the transmission, and exchanges and sets data necessary for the transmission of the image data. And data. “At the start of facsimile data reception” is when image data has not been transmitted yet and transmission-related data has been transmitted prior thereto. The transmission-related data includes, for example, a CI signal indicating a call from another facsimile data transmission device, a CNG signal indicating transmission of facsimile data, and the like.

[0028]

As described above, according to the present invention, facsimile data transmitted from another facsimile data transmitting apparatus can be directly recorded on paper or stored in a computer in accordance with the purpose and use state of the user. Or even if the computer cannot receive the facsimile data, it is possible to select how to process facsimile data transmitted from another facsimile data transmission device. it can.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 1, reference numeral 2 denotes a facsimile machine, and reference numeral 4 denotes a personal computer (hereinafter abbreviated as a personal computer). The facsimile apparatus 2 and the personal computer 4 are connected via an interface box 6 and exchange data possessed by each to store, edit, and correct data, and to change the function of one apparatus to the other. It constitutes a data processing system that can be used by the device. Interface with facsimile machine 2
The box 6 is connected by a dedicated cable 7, and the interface box 6 and the personal computer 4 are connected by a modem cable 8. The interface box 6 is provided with a plurality of resistors and the like, and serves to convert a start-stop synchronization signal into a voltage in order to interface the facsimile machine 2 with RS232C, which is a standard interface for serial data transmission of the personal computer 4. have.

The dedicated cable 7 and the modem cable 8 are connected to an RTS control signal line, a CTS control signal line,
It has two data lines and a ground line,
They are connected to each other via an interface box 6. The dedicated cable 7 also has a line for detecting connection / disconnection of the cable between the facsimile machine 2 and the interface box 6.

The RTS control signal line is in a state (RTS ENABLE) in which the facsimile machine 2 allows the transmission of the personal computer data (abbreviated as PC data) from the personal computer 4 or in a state in which the transmission is prohibited (RTS DISABLE). Is a line for a control signal representing Whether the control signal in the facsimile machine 2 is set to an H (High) state or an L (Low) state, and whether the facsimile apparatus 2 is in a state in which the facsimile apparatus 2 allows data transmission based on the control signal in the personal computer 4 No is detected.

Similarly, the CTS control signal line is a control signal indicating whether the personal computer 4 is in a state in which facsimile data is allowed to be transmitted from the facsimile apparatus 2 (CTS ENABLE) or in a state in which it is blocked (CTS DISABLE). The facsimile apparatus 2 detects whether or not the personal computer 4 is in a state in which data transmission is permitted based on the state of the control signal.

One of the two data lines is a line for transmitting facsimile data from the facsimile apparatus 2 to the personal computer 4, and the other is a line for transmitting PC data from the personal computer 4 to the facsimile apparatus 2. These facsimile data and PC data are respectively coded image data and coded image data transmission,
Control data for controlling reception (hereinafter referred to as command)
And

These control signal lines and data lines are unidirectional lines.

The facsimile data transmitted between the facsimile apparatus 2 and another facsimile apparatus also includes coded image data and control data (command) for transmitting and receiving the coded image.

On the side of the main body 10 of the facsimile machine,
A receiver 11 is attached. The receiver 11 is placed on a hook (not shown) provided on the main body 10 during a non-call, and is picked up from the hook during a call. The former is called an on-hook state, and the latter is called an off-hook state. Body 10
An operation panel 12 is provided at the front of the upper surface of the printer, and a recording paper holder mounting section 13 is provided at the rear. As shown in FIG. 2, a recording paper holder 14 is detachably attached to the recording paper holder mounting portion 13. The recording paper holder 14 has a shallow box shape. A pressure plate 15 is rotatably mounted inside the recording paper holder 14 and is urged by a spring 16 to urge the recording paper 17 into close contact with a paper feed roller 18.

A lid 19 that covers the opening of the recording paper holder 14 is rotatably attached to the main body 10. Lid 1
Between the pressure plate 9 and the pressure plate 15, there is provided a connecting device (not shown) for connecting the recording paper holder 14 with the recording paper holder 14 mounted on the recording paper holder mounting portion 13, and when the lid 19 is opened, the pressure plate 15 is opened. Is pressed down against the urging force of the spring 16 to form a space between the pressure plate 15 and the paper feed roller 18 for inserting the recording paper 17. When the lid 19 is closed, the pressure plate 15 is urged by the spring 16 to bring the recording paper 17 into close contact with the paper feed roller 18 as shown in FIG.

At a position adjacent to the paper feed roller 18 on the upstream side in the recording paper feeding direction, a recording paper sensor 20 for detecting the presence or absence of the recording paper 17 is provided. Recording paper sensor 2
Numeral 0 is a contact type sensor.
When the sheet 7 is brought into close contact with the sheet feeding roller 18, the detector of the recording sheet sensor 20 is pressed, whereby it can be seen that the recording sheet 17 is present.

The recording paper 17 in the recording paper holder 14 is sequentially sent out from the uppermost recording paper 17 by an automatic paper feeder including a paper feed roller 18 and a separation pad 22. The recording paper 17 sent out by the automatic paper feeder is
The sheet is sent to the recording device 29 by the pair of conveying rollers 26.

The recording device 29 includes a photosensitive drum 30, a transfer device 32, a developing device 33, and the like. The recording paper 17 is sent between the photosensitive drum 30 and the transfer device 32 by a transport roller 26. .

The surface of the photosensitive drum 30 is scanned by the laser beam from the laser beam scanning device 34 to form an electrostatic latent image. The laser light scanning device 34 includes a laser emitting unit 36,
A lens 37, a reflection mirror 38 and the like are provided. The laser light emitting section 36 includes a laser light source that emits a laser beam in accordance with a command from the control device 40, a polygon mirror that reflects the laser beam, and the like. The laser light emitted from the laser light emitting unit 36 is condensed by a lens 37, reflected by a reflection mirror 38, and
Is irradiated.

An electrostatic latent image is formed on the surface of the photosensitive drum 30 by the rotation of the photosensitive drum 30 and the scanning of the laser beam. The photosensitive area on the outer peripheral surface of the drum 30 can be considered as a set of dot formation points as a minimum unit when forming a latent image. The size of the dot forming point in the facsimile apparatus 2 is about 0.07 mm × 0.07 mm (the spot diameter of the laser beam is 80 μm), and the size of two dot forming points (about 0.13 mm × 0.07 mm) ) Correspond to the minimum reading area, that is, the pixels when the image reading device 42 described later is set to the superfine resolution (this is the highest resolution of the facsimile device 2). Recording device 29
Can be recorded at a resolution higher than the highest resolution of the facsimile apparatus 2.

A drum motor (not shown) for rotating the photosensitive drum 30 is connected to a control device 40 via a drive circuit, and the rotation of the photosensitive drum 30 is controlled by the control device 40.

The laser beam scanning device 34 is controlled based on the recorded image data supplied from the control device 40. An electrostatic latent image is formed on the photosensitive drum 30 by sequentially scanning the surface of the photosensitive drum 30 by one line (one dot line) while controlling the laser beam based on the recorded image data. The electrostatic latent image formed on the photosensitive drum 30 is
The toner as a developer is adhered by the developing device 33 and developed, and is transferred to the recording paper 17 by the transfer device 32. The toner remaining on the photosensitive drum 30 without being transferred to the recording paper 17 is removed by the cleaning device 51.

The transfer device 32 has a transfer roller 52, which applies a charge to the recording paper 17 and transfers toner adhered to the photosensitive drum 30 to the recording paper 17, thereby developing the toner on the photosensitive drum 30. The image is transferred to the recording paper 17. After the transfer, the recording paper 17 is neutralized by a neutralizer (not shown), and then guided to a fixing device 54 by a guide (not shown). The fixing device 54 has a heating roller 56 and a pressing roller 58, and the recording paper 17 on which the image has been fixed is discharged to a discharge tray 62 attached to the front surface of the main body 10 by a pair of discharge rollers 60. Is done.

The developing device 33 includes a toner cartridge 68
Is attached, the toner in the toner cartridge 68 is supplied to the stirring chamber 72 while being stirred by the stirring member 70. The toner supplied to the stirring chamber 72 is supplied to the developing chamber 74 while being stirred, and in the developing chamber 74,
The toner is stirred together with the magnetic carrier stored in advance, and is flipped up toward the developing sleeve 76.

The toner carried on the magnetic carrier adheres to the surface of the developing sleeve 76, is charged by the charger 78, and is supplied to the surface of the photosensitive drum 30 scanned by laser light.

The developing device 33 includes a toner cartridge 68
The apparatus is provided with a toner remaining amount detecting device 80 (see FIG. 4) for detecting the remaining amount of toner stored in the inside. The toner remaining amount detecting device 80 includes a detecting unit 82 attached to the main body 10,
A wiper (not shown) attached to the stirring member 70,
It is provided with a signal processing unit for processing an output signal of the detection unit and the like.

The detecting section 82 is of a transmission type photo sensor, and includes a pair of light emitting sections and a light receiving section. The light emitting section and the light receiving section are provided at the bottom of the toner cartridge 68.
Each of the transparent hollow projections is fitted. The toner remaining amount detecting device 80 detects the remaining amount of toner based on the length of the light receiving time of the light receiving unit of the detecting unit 82. Stirring member 70
Is started to rotate when the reception of facsimile data is detected, and stirs the toner. At this time, the toner between the hollow protrusions is scraped up, and the opposing surfaces of the hollow protrusions are wiped by the wiper, and the light receiving unit receives light for a moment. Thereafter, as the amount of remaining toner is larger, the toner fills the space between the hollow protrusions earlier, and light reception of the light receiving unit is blocked. The remaining amount of toner can be detected by the light receiving time of the light receiving unit, that is, the time from when the light receiving unit enters the light receiving state to when the light receiving unit returns to the light shielding state. The toner empty signal is issued when the remaining amount of toner becomes so small that printing cannot be performed. Since the stirring of the toner is started when the transmission of the facsimile data is detected, it is possible to determine whether or not the remaining amount of the toner is a recordable amount after the reception of the facsimile data and before the start of the recording.

The image reading device 42 for reading an image described on the original 90 is provided at the upper part of the main body 10. Documents 90 placed on a document table 94 provided at an intermediate portion on the upper surface of the main body 10 are sent out one by one by a document feeder 96 (see FIG. 4) based on an instruction to start reading. The fed document is sent to the image reading device 42 by a feed roller or the like. The setting of a document on the document table 94 is detected by a document table sensor 98. A document sensor 99 is attached to the document feeder 96. The original sensor 99 detects the leading end and the trailing end of the original 90 sent to the original feeder 96. After a lapse of a set time from the detection of the leading end of the document 90 by the document sensor 99, it is detected that the document 90 has been sent to the reading position.
When the end of 0 is detected, it is detected that the reading of the original 90 of one page has been completed and that the original 90 has been fed to a predetermined position.

The image reading device 42 irradiates the original on the original supporting plate 102 with light from the light source 100, reflects light reflected from the original by mirrors 103 and 104,
The light is condensed by 06 and enters the line image sensor 108 to read the image of the original one line at a time.

The line image sensor 108 has a plurality of charge coupled devices (CCDs) as photoreceptors.
evice). The CCD is a photoelectric conversion element that outputs a voltage according to the intensity of the received reflected light. The output voltage of the CCD increases as the intensity of the received light increases (closer to white). As will be described later, when the intensity of the reflected light is larger than the threshold value, the area read by the CCD is white (the value of the dot data is 0),
If it is smaller than the threshold value, it is set to black (the value of the dot data is 1). The minimum read area read by the CCD is a pixel.

The size of the pixel is determined by the amount of feed (feed speed) of the original by the original feeder 96 while one line is read by the image reader 42. The size in the scanning line direction is determined by a standard, and the above-mentioned feed speed can be changed according to the resolution. In this embodiment, the feed amount is controlled in three stages according to the resolution. When Super Fine is set, the feed amount is about 0.07 mm (1
5.4 lines / mm), when the fine is set, it is about 0.13 mm (7.7 lines / mm), and when the standard is set, it is about 0.26 mm (3. 8
5 lines / mm).

That is, the size of the pixel is about 0.13 mm × 0.07 mm when the super fine is set, and about 0.13 mm × 0.07 mm when the fine is set.
When the standard is set, it is about 0.13 mm x 0.26 mm. On the other hand,
As described above, since the size of the dot formation point in the recording device 29 is 0.07 mm × 0.07 mm, when converting image data read at superfine resolution to image data for recording, , One dot data in the scanning line direction must be increased to two dot data.

After the reading, the original is sent by the discharge roller 110 and discharged to the discharge tray 112 from the opening.

Next, data when image data is sent and received between the facsimile machine 2 and the personal computer 4 or between another facsimile machine (hereinafter referred to as a partner device) 114 shown in FIG. The setting of transmission parameters and the processing of received data and the like will be described.

When transmission / reception of facsimile data is performed between the facsimile apparatus 2 and the partner apparatus 114,
Transmission parameters such as transmission speed, resolution, paper width, and encoding method are set. Each of these transmission parameters has a plurality of levels as described later, and the facsimile data is transmitted at the highest level among the levels common to the facsimile apparatus 2 and the partner apparatus 114. The same applies to the transmission and reception of data between the facsimile machine 2 and the personal computer 4.

In this embodiment, the transmission parameter level of the personal computer 4 is lower than that of the facsimile
When data is transmitted to the destination apparatus 114 by the facsimile apparatus 2 or when facsimile data transmitted from the destination apparatus 114 is received by the personal computer 4 by the facsimile apparatus 2, the level of the personal computer 4 is set to the level of the facsimile apparatus 2. Transmission parameters are determined based on the level.

First, the resolution will be described. However,
For the sake of simplicity, the size of pixels in the scanning direction is the same in the facsimile apparatus 2, the partner apparatus 114 and the personal computer 4, and is 0.07 mm and 0.13 mm only in the sub-scanning direction as described above. , 0.26mm 3
One of the stages corresponds to super fine, fine, and standard resolutions, respectively.

When facsimile data is transmitted and received between the facsimile apparatus 2 and the destination apparatus 114 regardless of the personal computer 4, the resolution of the facsimile apparatus 2 is super fine as described above. 1
If the highest resolution of 14 is also superfine, the resolution is determined to be fine. If the highest resolution of the partner device 114 is fine, the resolution is determined to be fine.

The resolution of the personal computer 4 is determined by the display 1
16 is the resolution for displaying an image. Suppose that the display 116 is 200 dpi (dot / inch) × 400.
Assuming that the liquid crystal is composed of a liquid crystal having a size of dpi｝, this size corresponds to the size of one pixel in the superfine resolution of the facsimile apparatus 2. But,
This does not mean that the resolution of the personal computer 4 is immediately determined to be superfine. PC 4
Is generally fine. In the personal computer 4, the transmitted image data is made to correspond to the liquid crystal of the display unit 116 by executing a predetermined program. The program of the personal computer 4 creates image data with fine or standard resolution, This is to be displayed on the display device 116.

Although the facsimile apparatus 2 of this embodiment has the highest superfine resolution as described above, the highest resolution of most of the personal computers 4 is fine as described above. In between, the resolution is generally determined to be fine.

Therefore, when the facsimile machine 2 sends the image data sent from the personal computer 4 to the partner device 114, the resolution is determined to be fine even if the partner device 114 has a super fine resolution. In this case, the highest resolution of the facsimile apparatus 2 is determined to be fine, and the resolution is determined based on the highest resolution.

When the resolution is determined between the two facsimile apparatuses in this way, in order to guarantee the reproducibility of the original image, the minimum reading unit of the image reading apparatus 42 and the recording apparatus 29
It may be necessary to process image data according to the difference between the dot formation point size and the maximum resolution. Further, there is a case where processing of image data is required between the facsimile machine 2 and the personal computer 4 due to a difference in the maximum resolution. First, a case where the facsimile apparatus 2 receives image data sent from the personal computer 4 and records the image data by the recording device 29 will be described.

In this case, the resolution is determined to be fine, and the facsimile apparatus 2 receives the image data created in fine. In the case of recording, each dot data is increased to two dot data in the scanning line direction, and one line of data is increased to two line data in the sub-scanning line direction.

Next, the facsimile machine 2 is connected to the partner
The case where the image data transmitted from the PC 4 is received and the image data is transmitted to the personal computer 4 will be described.

When the resolution between the facsimile apparatus 2 and the partner apparatus 114 is set to super fine, line data in the sub-scanning line direction is extracted every other line in the facsimile apparatus 2 and sent to the personal computer 4. You. If the resolution is set to fine with the partner device 114, data processing is unnecessary.

When the image data read by the image reading device 42 of the facsimile machine 2 is sent to the personal computer 4, the resolution is set to fine, so that the processing of the image data is unnecessary.

When the partner device 114 or the personal computer 4 has only the standard resolution, similarly,
Image data processing is performed.

For example, the facsimile machine 2 is
If the resolution of the image data received from 14 is super fine and the highest resolution of the personal computer 4 is the standard, one line of data is extracted from the four lines of data in the sub-scanning line direction and transmitted from the partner device 114. If the resolution of the image data is fine, one line of data is extracted from the two lines of data and sent to the personal computer 4.

Also, the facsimile device 2
In the case where the fine resolution image data sent to the destination device 114 having the highest standard resolution is sent, one line of data is extracted from the two lines of data.

The paper width will be described.

The maximum paper width in the facsimile apparatus 2 is the maximum width of a document that can be read by the image reading device 42 and the maximum width of the recording paper that can be recorded by the recording device 29. In this embodiment, the maximum width is B4 size. is there. In addition, the maximum paper width in the personal computer 4 includes the display 1
16 is the maximum width of the image that can be displayed.
Size.

In any case between the facsimile apparatus 2 and the partner apparatus 114 and between the facsimile apparatus 2 and the personal computer 4, if the paper width of the image data to be transmitted is smaller than the maximum paper width on the receiving side. The paper width of the transmitted image data is determined, and if it is larger than the maximum paper width on the receiving side, the maximum paper width is determined.

Therefore, the paper width determined between the facsimile machine 2 and the partner apparatus 114 and the facsimile machine 2
When the paper width determined between the personal computer 4 and the personal computer 4 differs, or when the paper width of the original 90 read by the image reading device 42 differs from the paper width determined between the personal computer 4, etc. Processing of image data is required.

For example, if the image data received by the facsimile apparatus 2 is for B4 size, and it is necessary to reduce it to A4 size image data,
Four dots are extracted from five dot data in the width direction (scanning direction) of B4 size image data, and four lines of data are extracted from five lines of data in the length direction (sub-scanning direction).

In the present embodiment, the processing of the image data required by the difference in the sheet width and the difference in the resolution is collectively performed. The dot data extraction rate in the scanning direction and the sub-scanning direction is determined based on the data reduction rate due to the difference in paper width and the data extraction rate due to the difference in resolution.

In this embodiment, the paper width is different (smaller) from the paper width of the image data to be transmitted only when the paper width of the image data to be transmitted is larger than the maximum paper width of the receiving side. , The data increase processing for image enlargement is not performed. Regarding the resolution, the dot data may be increased in the recording device 29 of the facsimile machine 2,
At the time of data transmission, the resolution is determined to be the lower one of the maximum resolutions of the transmission side and the reception side, so that it is not necessary to increase the dot data for data transmission.

The encoding system will be described.

In the transmission of facsimile data, the encoding method of digital data includes an MMR (Modified MR) method and an MR (Modified READ (Relative Element Address D).
esignate)) and MH (Modified Huffman)
There are several types, and the MMR method is the most advanced coding method with the least number of data, and the MR method is the next most advanced coding method.

In the present embodiment, the encoding system of the facsimile apparatus 2 is the MMR system, MR system and MH system, and the encoding system of the personal computer 4 is the MH system.

The encoding method is also determined to be the highest encoding method among the encoding methods common to the transmitting side and the receiving side. When the facsimile apparatus 2 sends the image data received from the partner apparatus 114 to the personal computer 4,
When transmitting the image data received from the other device 114 to the partner device 114, if the coding systems of the two devices are the same, there is no need to change the coding system, and the facsimile device 2 transmits the received coded data as it is. However, when the two encoding systems are different, the facsimile apparatus 2 once decodes the received encoded data into dot data, encodes the data with the encoding system determined with the transmission partner, and transmits the dot data.

FIG. 3 shows an operation panel 12 provided at the front of the upper surface of the facsimile machine 2. At the rear of the operation panel 12, a display 150, a fine lamp 151, a super fine lamp 152, an auto (AUTO) lamp 154,
Fax / Tel (F / T) lamp 156, built-in answering machine
(MC) lamp 158 and the like are provided.
60, a start key 162, a stop key 164, and the like. Further, a function key 174, a set key 176, a clear key 178, a resolution key 180, a cursor key 182, 184, an incoming call mode key 186, a hook key 188 and the like are provided in an intermediate portion.

The display 150 displays the status of the facsimile machine 2, the operation procedure, and the like. The ten-key 160 is operated to select a function of the facsimile apparatus in addition to inputting a facsimile number of a facsimile apparatus of a transmission destination.

The start key 162 is a key for instructing the start of transmission, reception and recording of facsimile information. The stop key 164 is a key for giving an instruction to stop selection of a function or for giving an instruction to interrupt execution of a function.

The cursor keys 182 and 184 are
These keys are operated to move the cursor in 50 or to select a function.

A function key 174 is a key for instructing the start of display of various functions executable in the facsimile apparatus 2 and the like.
This operation is performed by operating 0, cursor keys 182, 184, and the like. The set key 176 is a key that is operated when instructing the selection of a function or the like, and the clear key 178 is
These keys are used to instruct release of function selection and the like.

The resolution key 180 is a key for selecting a resolution in the image reading device 42 of the facsimile machine 2. The resolution is set to standard by default. In that case, the fine lamp 15
1. Neither of the superfine lamps 152 is turned on. One press of the resolution key 180 sets fine, and the fine lamp 151 is turned on. By pressing the resolution key 180 twice, super fine is set, the fine lamp 151 is turned off, and the super fine lamp 152 is turned on. Further, when the button is pressed three times, the halftone is set, and both lamps 151 and 152 are turned on to display the halftone setting. Function key 1
74, ten keys 160 and cursor keys 182, 18
By the operation of 4 or the like, one of 16 gradations and 32 gradations is set.

The incoming call mode key 186 is used for operating the facsimile machine 2 in an automatic reception (AUTO) mode, a manual (MANUAL) mode, a facsimile / tel (FAX / TEL) switching mode, an external answering machine recording (TAD) mode, and a built-in answering machine. Recording (MC)
This key is used to select one of the modes. The AUTO mode is a mode for automatically receiving data, and the MANUAL mode is a mode for receiving data based on a key operation of a user. FAX / TEL
The switching mode (referred to as F / T mode) is a mode in which if the data transmitted by one telephone line is facsimile data, the data is automatically received, and if the data is voice data, the receiver 11 can be picked up to talk. It is. The TAD mode is an answering machine mode, in which a message message spoken by a caller is recorded by an external answering machine 190 (see FIG. 4) attached to the facsimile machine 2. , MC mode is also an answering machine mode, in which the message is recorded by a built-in answering machine recorder 192 (see FIG. 4) incorporated in the facsimile apparatus 2.

The hook key 188 is a key for instructing the closing of the line. When the hook key 188 is pressed once in the on-hook state, the line is closed, and when the hook key 188 is pressed twice, the line is opened. The receiver 11 is in an on-hook state, but in a monitor state in which the line is closed and the operator can know the line state through the speaker 226, the hook key 18 is turned on.
If 8 is pressed once, the line is released.

When the AUTO mode is selected, the AUTO lamp 154 is turned on, and when the F / T mode is selected, the F / T mode is turned on.
The / T lamp 156 is lit, and neither is lit when the MANUAL mode is selected, both lamps 154, 156 are lit when the TAD mode is selected, and when the MC mode is selected. MC lamp 158
Lights up.

The facsimile apparatus 2 receives the facsimile data transmitted from the partner apparatus 114 in one of the paper output mode, the PC ONLY mode, and the PC priority mode.

The paper output mode is a mode in which image data included in the received facsimile data is recorded on the recording paper 17 and output. The PC / ONLY mode is a mode in which the personal computer 4 can receive data. In this mode, the facsimile apparatus 2 stores the facsimile data in a buffer described later when the facsimile data cannot be received. PC priority mode is for PC 4
In this mode, the facsimile data is received by the personal computer 4 when facsimile data is receivable, but the facsimile data is recorded on the recording device 29 when facsimile data cannot be received.

When the function key 174 is pressed,
A plurality of functions executable by the facsimile apparatus 2 are alternately displayed on the display 150. If the set key 176 is pressed while the output mode setting is displayed, the setting of the output mode is selected. Each time the cursor keys 186 and 188 are operated, the three output modes are sequentially displayed on the display 150 one by one. Is displayed. If the set key 176 is pressed while the desired output mode is displayed, the output mode is set to the selected mode by pressing the cursor keys 186 and 188.

As shown in FIG. 4, a control device 40 provided below the facsimile device 2 has a C
PU 200, RAM 202 as storage device, ROM 2
04, EEPROM 206, input / output port (hereinafter, I / O port)
Called O port. ) 210 and bus 211,
It includes a transmission / reception control circuit 212, a modem 214, and the like. The CPU 200 includes a DMAC 208, a parallel / serial conversion circuit 240 described later, and the like.

The DMAC 208 has a RAM 202 and an I / O
It controls the transfer of data to and from the port 210 without passing through the CPU 200. DMAC208
Issues a transfer request signal to the CPU 200 via the terminal No. 47, and a transfer permission signal for permitting the transfer is sent to the CPU 200.
When issued to the MAC 208, the RAM 202, EEPR
OM 206 to I / O port 210 or I / O port
Direct transfer of data from O port 210 to RAM 202
(Direct Memory Access). Also, I
The I / O port 210 is connected to the recording paper sensor 20, the toner remaining amount detecting device 80, the document table sensor 98, the document sensor 99, the operation panel 12, etc., and the personal computer 4 is connected to the network via the interface box 6. External lines 224 are connected via control units (hereinafter abbreviated as NCUs) 222, respectively. NC
U222 includes the receiver 11 and the external answering machine 19
0, the speaker 226 is connected. I / O port 2
10, a binarizing circuit 228, a recording device 29, and the like are connected, and a document feeder 96, a ringing tone generator 232, and a built-in answering machine 192 are connected via driving circuits 230, 231, 233. Have been.

The binarizing circuit 228 is a circuit for converting the read image data read by the image reading device 42 into binary data. That is, it is determined whether or not the analog output voltage value supplied from the CCD is greater than threshold data (converted from a digital value to an analog signal in the binarization circuit 218) supplied from the EEPROM 206. Is set to 0 (white), and if smaller, black (1), binary data is created. When halftone is selected by operating the resolution key 180, the data is converted into binary data based on the dither matrix.

In the image reading device 42, the light source 100
(For example, the central part of the original is bright and the peripheral part is dark). for that reason,
The output voltage value of the CCD may not accurately correspond to the density of each pixel on the document 90 in some cases. In order to deal with this inconvenience, in the facsimile apparatus 2, the threshold value is determined according to the illuminance unevenness and the like, and is stored in a table in the EEPROM 206.

The EEPROM 206 of the threshold data
Are supplied to the I / O port 210 under the control of the DMAC 208.

In the facsimile apparatus 2, the image of one line of the original 90 is scanned by the image reading device 42 for about 2.5 ms.
Is read in. One row of the A4 size original 90 is composed of 1,728 pixels. Therefore, the time required to read eight pixels is about 10 μs {(the time required to read one line is 2.5 ms)} (the number of pixels in the width direction of A4 is 1728/8). Therefore, the binarization circuit 2
28, threshold data is supplied every 10 μs.

The parallel / serial conversion circuit 240 converts the image data into serial data when the image data is transmitted from the facsimile apparatus 2 to the personal computer 4, or conversely,
This is a circuit for parallel-converting the encoded image data sent from the personal computer 4 to the facsimile apparatus 2.

In this embodiment, a clock is supplied to the parallel / serial conversion circuit 240 for about 1 ms in order to convert 8-bit parallel data into serial data. Since the transmission speed between the facsimile apparatus 2 and the personal computer 4 is 9600 bps (bits / second), it takes about 1 ms to convert 8-bit data into serial data.
(1 か か る 9600 × 8).

This clock is output from the CPU 200
It is supplied via the 7th clock input / output terminal.

Since the 47th clock input / output terminal is also used to supply a transfer request signal from the DMAC 208 to the CPU 200 as described above, it is shared by both the DMAC 208 and the parallel / serial conversion circuit 240. Will be. Switching between the DMAC 208 and the parallel / serial conversion circuit 240 is performed by a multiplexer. The 47th clock input / output terminal is at least 1 ms by the parallel / serial conversion circuit 240 as described above.
It is impossible to perform these switchings by the multiplexer in a cycle shorter than 1 ms, since they are occupied during the period. In contrast, I / O port 210 has 1
Threshold data must be supplied every 0 μs. Therefore, it is impossible to perform the reading by the image reading device 42 and the sending of the sending image data in parallel.

The transfer of the binarized image data from the I / O port 210 to the RAM 202 is also performed by the DMAC 208.
This command is issued by the I / O port 2
It is issued when eight bits of image data are supplied to ten predetermined gate arrays.

The parallel / serial conversion circuit 240
The clock supply to the CPU 200 is started by a clock start command from the CPU 200 and is ended by an end command. Therefore, the CPU 200 can execute other programs while the clock is being supplied to the parallel / serial conversion circuit 240.

Therefore, in the control device 40, in parallel with the supply of the clock to the parallel / serial conversion circuit 240, the encoding of the image data based on the program described later stored in the memory of the ROM 204 is performed. ing.

The parallel / serial conversion circuit 240
As shown in FIG. 4, the data reception interrupt prohibition flag 2
43, data transmission inhibition interrupt flag 244, P / S reception data buffer 246, P / S transmission data buffer 248
Is provided. Image data and command data transmitted from the personal computer 4 input from the determined gate array of the I / O port 210 are converted into parallel data by the parallel / serial conversion circuit 240 and then stored in the P / S reception data buffer 246. Is done. The image data and command data stored in the P / S transmission data buffer 248 are converted into serial data,
The data is transmitted to the personal computer 4 from the determined port of 0.

When the facsimile apparatus 2 and the partner apparatus 114 are connected via the external line 224, the transmission / reception control circuit 212 exchanges both facsimile numbers, resolutions, and other communication-related information with the partner apparatus 114. Circuit.

The modem 214 modulates a digital signal into an analog signal, and outputs the modulated signal to the external line 2 via the NCU 222.
24, and from the external line 224 to the NCU 2
The analog signal input via the input terminal 22 is demodulated into a digital signal. Therefore, the modulation / demodulation mechanism 234
And an audio reproducing mechanism 236 for reproducing the transmitted audio analog data into audio. The modulation / demodulation mechanism 234, the audio reproduction mechanism 236, and the NCU 222
The receiver 11 and the like constitute a telephone.

The modem 214 further includes a modem transmission data buffer 238, a modem reception data buffer 239, a data reception interrupt prohibition flag 241, and a modem reception data buffer 239 used for transmitting facsimile data with the partner apparatus 114 as described later. A data transmission interrupt prohibition flag 242 is provided. The NCU 222 automatically receives an incoming call for a call from the external line 224 when receiving data, and automatically calls a destination when sending data. Digital data representing the number of the other party is supplied from the CPU 200 to the NCU 222 through the I / O port 210.

[0113] The ringing tone generator 232 is
When a call signal is sent from a telephone or a telephone, the control device 4
A ringing tone is generated by a voltage supplied via the drive circuit 231 based on a command from 0. The drive circuit 231 supplies or stops supplying the voltage in response to the calling signal.

As shown in FIG. 5, the RAM 202 includes a PC-side reception data buffer 250, a PC-side transmission data buffer 252, and a FAX-side reception data buffer 25.
4, FAX side transmission data buffer 256, read image data buffer 258, recording temporary buffer 260, recording buffer 262, PC transmission parameter buffer 263, self facsimile number buffer 264, dial buffer 2
66, one-page data buffer 277, decoding buffer 270, encoding buffer 271, image data reception transmission parameter buffer 290, PC data transmission flag 2
68, DLE flag 272, cancel flag 274,
Print flag 276, PC / TEL flag 278, reception ready flag 280, FAX incoming flag 282, paper output flag 284, proxy flag 286, PC transmission flag 288, paper output mode era line reception flag 292, PC
ONLY mode period reception flag 294, PC priority mode period reception flag 296, time-up flag 29
8, a flag A, a flag B, a flag C, a flag D, a flag E, a 0 fill data counter 340, a 0 data counter 342, a line counter 344, an image data bit number counter 346, an error line counter 348 and the like are provided.

The PC data received by the facsimile apparatus 2 from the personal computer 4 and transmitted to the partner apparatus 114 is stored in the facsimile transmission data buffer 256, and the facsimile data received by the facsimile apparatus 2 from the partner apparatus 114 is stored in the facsimile reception data buffer. 254. Facsimile data transmitted by the facsimile apparatus 2 to the personal computer 4 is stored in the PC-side transmission data buffer 252, and PC data and commands received and recorded by the facsimile apparatus 2 from the personal computer 4 are stored in the PC-side reception data buffer 250. You.

The RAM 202 is provided with a shared buffer shared by the buffers 250 to 266, 270, 271, 290, and 292.

The ROM 204 stores an encoded image processing program, a decoded image processing program, and FIGS.
0, FIGS. 14 to 20, FIGS. 22 to 24, FIGS. 26 to 40
And a memory for storing the reading and sending program shown in FIG.

On the other hand, as shown in FIG.
A keyboard 300, a display 116, a mouse 304 connected to the keyboard 300, and a control device 306 are provided. The control device 306 includes a CPU 30 as a processing device.
7. It has a RAM 308 and a ROM 309 as storage devices and a bus 310 for connecting them, and an I / O port 3
11, a keyboard 300, a display 116, and a mouse 304
Etc. are connected.

One of a plurality of functions displayed on the display 116 is selected by operating the mouse 304. As shown in FIG. 6, the keyboard 300 is provided with alphabet keys 312, numeric keys 314, and the like, which are operated when a facsimile number, a telephone number, and the like of a transmission destination are input.

When the personal computer 4 is connected to the facsimile machine 2, the display 116 displays at least the functions of transmission, reception, recording, reading, and telephone. Therefore, by moving the mouse 304 on the operation panel, the cursor on the display 116 is moved to a portion on the display 116 on which the function intended by the user is displayed. Pressing one of the buttons selects the function, and pressing the other button cancels the selection. When one of the buttons is pressed again with the function selected, the execution is started.

When the transmission function is selected, the PC data is transmitted from the personal computer 4 to the facsimile apparatus 2 and to the partner apparatus 114.

When the receiving function is selected, the partner device 114
The facsimile apparatus 2 prepares to receive facsimile data transmitted from the facsimile apparatus 2. A program for receiving facsimile data is started, whereby the output mode of the facsimile apparatus 2 is set to PC / O.
By setting the NLY mode or the PC priority mode, facsimile data transmitted from the facsimile apparatus 2 can be received.

The PC data is transmitted from the personal computer 4 to the facsimile apparatus 2 and to the partner apparatus 114.

When the reading function is selected, the image data read by the image reading device 42 of the facsimile machine 2 is sent to the personal computer 4.

When the recording function is selected, the PC data is transmitted from the personal computer 4 to the facsimile device 2 and recorded by the recording device 29.

When the telephone function is selected, a telephone partner is designated from the personal computer 4 to the facsimile apparatus 2, and a call is made by the telephone of the facsimile apparatus 2.

[0127] As shown in FIG.
C data buffer 320, transmission PC data name buffer 3
22, a transmission partner buffer 324, an encoded image data buffer 326, a facsimile data buffer 328, and the like. The ROM 309 is provided with a memory for storing the PC data transmission instruction program shown in FIG. 12 and a memory for storing the PC data transmission program shown in FIG. Communication between the facsimile apparatus 2 and the partner apparatus 114 is usually performed in five communication phases. In phase A, call setup and line establishment are performed, and in phase B, the state confirmation of data lines and the like and the determination of transmission parameters such as resolution and paper width are performed. In phase C, a message such as image data is transmitted. In phase D,
Instructions for message delimiters and receipt confirmation are performed. If all the messages to be transmitted have not been transmitted, the process returns to the phase B or the phase C, and the transmission of the message is continued again. Phase B or Phase C
Are repeatedly executed until the transmission of the transmission scheduled message is completed. In phase E, the call is restored, that is, the line is disconnected (released).

Communication between the facsimile apparatus 2 and the personal computer 4 is started from phase B since call setting and the like and line probability are unnecessary, and is performed in four transmission phases.

The phases A to E will be described later in detail.

The operation of the facsimile apparatus 2 configured as described above will be described. In the idle state of the facsimile apparatus 2, the start of any of functions such as transmission, reception, recording, image reading, and telephone communication of facsimile data is awaited.

When a command is transmitted from the personal computer 4 to the facsimile apparatus 2 in the idle state, the facsimile apparatus 2 fetches the command and performs a process corresponding to the content of the command.

Transmission and reception of encoded image data and commands between the facsimile apparatus 2 and the personal computer 4 are performed by interruption. There are a plurality of interrupt processing programs, and an interrupt vector is set to indicate an interrupt processing program to be executed for an interrupt signal.

The interrupt signal is transmitted to the P / S reception data buffer 2
This is issued when 8-bit data is stored in 46 and when the P / S transmission data buffer 248 becomes empty. The execution of the interrupt processing program in response to the generation of the interrupt signal is prohibited and permitted by setting and resetting the data reception interrupt prohibition flag 243 and the data transmission interrupt prohibition flag 244 provided in the parallel / serial conversion circuit 240. The data reception interruption prohibition flag 243 is always in an interruption permission state. In this embodiment, data can be transmitted at any time.

When image data or a command is transmitted from the facsimile machine 2 to the personal computer 4, the execution of the interrupt processing program is normally prohibited, and it is permitted at the time of actual transmission and the setting of the interrupt vector is performed. Will be When the facsimile apparatus 2 receives image data or a command from the personal computer 4, the reception interrupt processing is always permitted, so that only the setting of the interrupt vector is performed.

The setting of these interrupt vectors and the setting and resetting of the data transmission interrupt prohibition flag 244 are for executing transmission and recording of PC data by the facsimile device 2, transmission of received facsimile data to the personal computer 4, and the like. It is performed in each program. The order of transmission and reception of these image data and commands and the types of commands to be exchanged are determined. Set and reset are performed, but the description is omitted in principle.

Facsimile machine 2 in idle state
The command reception / transmission interrupt processing between the PC and the personal computer 4 is based on the idle command reception P / S interrupt processing program shown in FIG. 9 and the idle command output P / S interrupt processing program shown in FIG. Will be explained.

When a command is transmitted from the personal computer 4 to the facsimile machine 2, the idle command reception P / S interrupt processing program shown in FIG. 9 is executed. First, in step 1 (hereinafter abbreviated as S1; the same applies to other steps), the parallel / serial conversion circuit 240 is used.
1 byte of data is extracted from the P / S reception data buffer 246 of FIG. Next, in S3, it is determined whether or not the content of the data is CR, that is, whether or not the data indicates the end of the command.

If the result of the determination is NO, one execution of this program is terminated, and the execution from S1 is started again.

While this operation is repeated, S
If the decision result in the step 3 is YES, in a step S4, it is determined whether or not there is a character AT indicating the start of the command in the data stored in the PC-side received data buffer 250 so far. If YES is determined that one command has been detected, S6 and the subsequent steps are executed. The command starts with a character AT, is followed by data representing the content of the command, and ends with a character CR. When a CR is detected in S3 and an AT is detected in S4, one command is determined. It has been detected.

If there is data representing the content of the command between the CR and the AT, the decision result in S5 is YES, and in S6,
In S7 and S8, it is determined whether the command is an AT command, a FAX command, or a printer or scanner command.
The AT command is a command for starting communication with a communication partner, such as executing dialing (transmitting a signal such as a pulse signal corresponding to a number such as a facsimile number or a telephone number to the external line 244). A command for instructing a procedure necessary for transmission and reception of facsimile data, and the like. A printer / scanner command is a setting required when the facsimile apparatus 2 records PC data or reads an image according to an instruction from the personal computer 4, for example, This is a command for setting the level of the transmission parameter.

If the command is an AT command, the result of determination in S6 is Y
It becomes ES, and in S11, it is determined whether or not the content of the command is an operation command. The operation command is a command for instructing any operation such as dialing. If the operation command is an operation command, S14 is executed and a flag corresponding to the command is set. Even when the determination results of S7 and S8 are YES, S12 and S1 respectively.
At 3, it is determined whether or not the content of the command is an operation command, and if it is an operation command, S14 is executed.

If it is not an operation command, S11, S12,
The determination results in S13 are NO, respectively, and S5 is executed. However, since the command has been fetched and there is no data in the PC-side reception data buffer 250, the determination result in S5 is NO, and a response to the command is returned in S10. Done. For example, if the content of the command is facsimile machine 2
If the transmission parameter of the facsimile apparatus 2 is to be asked, data indicating the transmission parameter of the facsimile apparatus 2 is transmitted to the personal computer 4.

The contents of the command are AT command, F
If none of the AX command, the printer command, and the scanner command, S9 is executed, and an error command is output to the personal computer 4.

Even if the command is transmitted to the facsimile apparatus 2, if there is no data representing the command between the AT and the CR, the determination result in S5 is NO, and a response to the command is made in S10. Even if there is no data, an OK command or an error command indicating that the command has been received is output to the personal computer 4.

The error command in these S10, O
The output of the K command and the output of the error command in S9 are specifically to write the contents of the command to the PC-side transmission data buffer 252, and the written command is the command output P / during idle shown in FIG.
It is output to the personal computer 4 according to the S interrupt processing program.

In S21 of this program, PC
It is determined whether there is data in the side transmission data buffer 252. If there is data, the determination result of S21 is YE
S, and in S22, the PC-side transmission data buffer 2
After the data is taken out from P.52, P / P
The data is stored in the S transmission data buffer 248. In addition, PC
If there is no data in the side transmission data buffer 252, S
The determination result at 21 is NO, and interrupts for command output are prohibited at S24. Even if there is no data in the PC-side transmission data buffer 252, the output process is not performed.

The facsimile apparatus 2 transmits PC data to the destination apparatus 114 in accordance with an instruction from the personal computer 4,
Performs three operations: recording of PC data and telephone. First, transmission of PC data to the partner device 114 will be described.

A procedure for receiving PC data from the personal computer 4 and transmitting the PC data to the partner device 114 will be schematically described based on the sequence chart shown in FIG. In FIG. 11, DTE (Data Terminal Equipment,
The data terminal device is a personal computer 4, DCE (Data Cercuit)
The terminating equipment (data line terminating device) is the facsimile device 2 and the remote fax is the partner device 114.

In the idle state until the transmission of PC data is instructed by the personal computer 4, the personal computer 4 transmits a command (AT + FCLASS = 2) for setting the data transmission and reception processing capabilities of the facsimile apparatus 2. The facsimile apparatus 2 returns an OK command if the data transmission and reception processing ability is CLASS2. Also, the personal computer 4 outputs a signal (AT + FD) indicating its own transmission parameter.
CC = vr, wd, df, br) in the facsimile apparatus 2
The facsimile apparatus 2 stores the transmission parameters of the personal computer 4 in the PC transmission parameter buffer 263 and returns an OK command. Note that vr is the resolution, wd is the paper width, df is the encoding method, and br is the transmission speed.
(AT + FDCC) is a signal including a value representing each level of vr, wd, df, and br.

When transmission of PC data is instructed in personal computer 4, a call is made from personal computer 4 to facsimile apparatus 2, that is, partner apparatus 114 transmits image data.
Is transmitted to the external line 224, and a command (ATD +
STRING) (STRING is a number string representing a facsimile number) is output, the facsimile apparatus 2 closes the line and dials according to the command, and the CI signal is sent to the partner apparatus 114. Further, the facsimile apparatus 2 transmits the facsimile data when transmitting facsimile data.
Issues an NG (CALLING) signal.

On the other hand, CED
A (Called Station Identification) signal (called terminal identification signal) and the V21 flag are returned. The V21 flag is a signal that is output each time a command is output and a new signal is output. Then, all components of the communication line are set in an appropriate state so that data is transmitted without being damaged. It is a signal that is guaranteed to be adjusted. V2 from calling
Phase A is until the reception of one flag.

[0152] The destination device 114 transmits a DIS (Digital Identification Signal) signal (digital identification signal) following the V21 flag signal. The DIS signal is a signal that informs the facsimile machine 2 as the calling terminal of the transmission / reception function (resolution, paper width, encoding method, data transmission speed, etc.) of the partner device 114 as the called terminal.
When the facsimile apparatus 2 receives the DIS signal, it sends a + FCON signal (facsimile connection signal) to the personal computer 4.
+ FDIS signal (other device function report signal) and O
Transmit the K signal. In contrast, the personal computer 4 has (AT +
An FDT (Data Transmission) signal is output to the facsimile machine 2, and thereafter, the facsimile machine 2
The DCS 14 outputs a DCS (Digital Command Signal) signal. The DCS signal is a signal for notifying the transmission parameters between the facsimile apparatus 2 and the destination apparatus 114 set based on the transmission parameters of the destination apparatus 114 indicated by the DIS signal. The common and highest level transmission parameters are set with the device 114.

The + FCON, + FDIS, etc. are A
Abbreviations such as T + FCON, AT + FDIS, etc., and "+" is omitted in the flowchart.

The facsimile apparatus 2 also has a TCF (Trai
ning Check) signal is output to the partner device 114. A predetermined number of 0 bit data is transmitted from the facsimile apparatus 2 to the partner apparatus 114 within a predetermined time, and
By checking at 14 whether or not the bit data could be received, it is checked whether or not the encoded image data can be transmitted at the transmission rate set between the two devices. If possible, the transmission speed is reduced in the facsimile machine 2 in response to a request from the partner device 114, and the check is performed again.

If the result of the training check is normal, the partner device 114 sends the CFR (Co
The facsimile apparatus 2 outputs a signal to transmit the image data, and indicates that the procedure before transmitting the image data is completed and the transmission of the image data may be started.

In response to this, the facsimile apparatus 2 outputs a + FDCS signal to the personal computer 4 to notify the transmission parameters set with the partner apparatus 114,
Outputs an ONNECT signal. Further, the output of the RTS control signal line is set to a state where transmission of PC data is permitted, and
Informs AX side transmission data buffer 256 that there is enough capacity to store PC data, and if there is no capacity, RTS
The output of the control signal line is set to a state where transmission of PC data is blocked. Phase B with the output of the CONNECT signal
Ends.

It should be noted that the FAX-side transmission data buffer 256
Depends on whether the FAX-side transmission data buffer 256 is full of data, and if so, whether the shared buffer of the RAM 202 is also full of data. Is detected. Detection of whether or not there is a capacity for storing data in another buffer is performed in a similar manner. The personal computer 4 outputs the PC data to the facsimile apparatus 2 when the output of the RTS control signal line permits the transmission of the PC data, and does not output the PC data when the output is prohibited.

When the personal computer 4 can transmit data to the facsimile machine 2, first, the personal computer 4 sends out coded image data (PIX DATA) of the first page, and the facsimile machine 2 transmits the transmitted data. Send it to the partner device 114. At the end of one page of data, <DLE><ET
X> data is attached, and if the data is sent, the facsimile apparatus 2 returns the RTC (Return to RTC) indicating that the transmission of the image data of one page to the partner apparatus 114 is completed and the transmission is changed to the transmission of the command. Control) PATTERN
Send a signal. Phase C ends with the output of the RTC PATTERN signal.

Next, the phase D is executed and the personal computer 4
And outputs a signal indicating whether there is a next page according to the OK signal (AT + FET = X).
Is output to the facsimile apparatus 2. If the value of X is 0, it indicates that there is data for the next page, and if it is 2, it indicates that the data has ended. If there is next page data, the facsimile machine 2 sends an MPS (Multipage Signal) to the partner apparatus 114.
A signal is sent to signal the end of one page of data and that the transmission procedure returns to the beginning of phase C. On the other hand, the partner device 114 outputs an MCF (Massage Confirmation) signal (message confirmation signal) to the facsimile device 2 to notify that the coded image data transmitted so far has been completely received.

If the transmission parameter is changed when one page is completed, EOM (En) is used instead of the MPS signal.
d of Message) signal is sent and the transmission procedure is phase B
To return to the beginning.

Next, the facsimile machine 2 is connected to the personal computer 4
Then, the partner device 114 outputs a (+ FPTS: 1) signal indicating that the data has been completely received, and outputs an OK command. On the other hand, the personal computer 4 (AT + FD
T) If the signal is output to the facsimile apparatus 2, the facsimile apparatus 2 outputs a CONNECT signal to the personal computer 4, and sets the output of the RTS control signal line to a state in which transmission of PC data is permitted or blocked, and Phase C is executed, and the coded image data is transmitted from the personal computer 4 to the facsimile apparatus 2, and the facsimile apparatus 2 transmits the coded image data to the partner apparatus 114. The exchange of the (AT + FDT) signal and the CONNECT signal and the setting of the output of the RTS control signal line are the same as part of the phase B, but here, the process returns to the beginning of the phase C and the transmission parameters are the same. To transmit the coded image data to the facsimile apparatus 2
The exchange of these signals is performed in the.

The transmission of the encoded image data of one page is completed.
If there is no encoded image data to be transmitted next, the personal computer 4 outputs data indicating that there is no next page data (AT + FET = 2) to the facsimile apparatus 2 in phase D. As a result, the facsimile device 2 is
Output an EOP (End of Procedure) signal (procedure end signal) to indicate that the page has ended and that there is no other transmission data.
After receiving the MCF signal from the partner device 114 and outputting the (+ FPTS: 1) signal to the personal computer 4, the phase E is performed. The facsimile device 2 outputs a signal (+ FHNG: 0) indicating the end of communication to the personal computer 4, and outputs a DCN (Disconnect) signal to the partner device 114 to open the line, and then outputs an OK signal to the personal computer 4. Then, the entire procedure of data transmission is completed.

In the above description of the sequence chart, "signal" means a CNG signal and a CED signal are pulse signals, and the other signals are commands composed of 0 and 1 bit data.

At the time of transmitting the above PC data, the PC data to be transmitted by the personal computer 4 and the transmission partner are specified. The PC data transmission instruction is performed in accordance with the PC data transmission instruction program shown in FIG. First, S31
It is determined whether transmission of PC data has been selected in. If transmission of PC data is selected, the determination result in S31 is YES, and the R
P stored in the PC data buffer 320 of the AM 308
An input instruction prompting input of a PC data name to be transmitted among the C data is displayed on the display unit 116.

Steps S32 and S33 are repeatedly executed until the input is completed. The PC data name instructed to be transmitted is stored in the transmission PC data name buffer 322. If the input is completed, the determination result in S33 becomes YES, and an input instruction of the transmission partner is displayed on the display 116 in S34. The designation of the transmission destination is performed by inputting the facsimile number of the transmission destination with the area code. The transmission partner is stored in the transmission partner buffer 324, and if the designation of the transmission partner is completed, the determination result in S35 becomes YES and the execution of the program ends.

The image data of the PC data instructed to be transmitted is encoded, and the encoded image data buffer 326
Is stored in

If transmission start is instructed after the transmission PC data and the transmission destination are specified as described above, the determination result of S41 of the PC data transmission program shown in FIG.
It becomes S. Next, in S42, a call transmission command, which is an instruction for dialing the transmission partner at the time of image data transmission, is transmitted to the facsimile apparatus 2. (ATD +
(STRING) signal is output.

At steps S43 to S46, the PC shown in FIG.
Output of the signal shown in the sequence chart during data transmission,
If the reception is performed and the transmission of the PC data to the facsimile apparatus 2 is permitted, the determination result in S46 is YES, and one-code data is transmitted to the facsimile apparatus 2 in S47. Thereafter, steps S46 to S48 are repeatedly executed until one page of encoded image data is transmitted. During this time, if the FAX-side transmission data buffer 256 of the facsimile apparatus 2 is full and PC data cannot be transmitted, the determination result in S46 is NO,
It is awaited that transmission of PC data becomes possible.

When the transmission of one page of encoded image data is completed, the determination result in S48 becomes YES, an OK command from the facsimile apparatus 2 is obtained, and the determination result in S49 becomes Y.
After the ES, it is determined in S50 whether or not there is encoded image data to be transmitted next. If there is encoded image data of the next page, the determination result in S50 becomes YES,
After S51 to S54 are performed as shown in the transmission sequence chart, the execution of the program returns to S46, and the encoded image data of the next page is sent to the facsimile machine 2. If there is no encoded image data of the next page, the determination result in S50 is NO, and after the communication end processing is performed in S55 and S56, the transmission partner buffer 324 is determined in S57.
It is determined whether or not there is still a transmission partner.
If there are a plurality of transmission destinations, the determination result in S57 is YES, the program execution returns to S42, and the next transmission destination is instructed to the facsimile apparatus 2. If the PC data is transmitted to all the designated transmission destinations, the determination result of S57 is N
It becomes O, and the execution of the program ends.

As described above, if a call transmission command (ATD + STRING) is transmitted from the personal computer 4 to the facsimile apparatus 2 in order to transmit the PC data to the partner apparatus 114, the facsimile apparatus 2 executes S71 of the transmission program shown in FIG. The determination result is NO, the determination result in S72 is YES, and the number of digits of the string (numerical string) transmitted from the personal computer 4 in S73 and the facsimile machine 2
It is determined whether or not the number of digits of its own facsimile number stored in its own facsimile number buffer 264 matches.

Now, the self facsimile number buffer 26
If the user's facsimile number is stored without the area code, the designation of the transmission destination on the personal computer 4 is basically performed by adding the area code and inputting the facsimile number as described above. S73
Is NO, and a determination is made in S74 as to whether the numbers of the common digits match. Of the longer facsimile number, the same number of digits as the shorter facsimile number is compared from the end. Here, the partner device 11
Assume that 4 is specified. Therefore, the determination result of S74 is NO, and S77 is executed.

On the other hand, if the facsimile number is stored in the own facsimile number buffer 264 with the area code added thereto, the determination result in S73 is YES, and the determination in S73 is YES.
At 5, it is determined whether or not all the numbers match. If data transmission to the partner device 114 has been instructed, the determination result in S75 is NO, and S77 is executed.

When the facsimile number is input, parentheses are added to the area code and the local area code, and a hyphen is inserted between the local area number and the local number in order to facilitate the operator's understanding. Symbols such as and spaces may be inserted. The same applies to the case where the transmission destination is specified by the personal computer 4 and the case where the facsimile apparatus 2 stores its own facsimile number in the self-facsimile number buffer 264. However, since these symbols such as parentheses are not actually facsimile numbers, when the facsimile number includes a symbol, the facsimile apparatus 2 is designated as a transmission destination by checking whether or not the numbers match except for the symbol. It is determined whether it has been performed. The number in the facsimile number is called dial valid data.

In S77, it is determined whether dialing is possible. For example, it is determined whether or not the facsimile apparatus 2 is transmitting or receiving facsimile data and the line is in use, and whether or not a call signal for an external call is being detected. If dialing is not possible, the determination result in S77 becomes NO and S8
4 is executed, and an error command is output to the personal computer 4.

If dialing is possible, the decision result in S77 is YES, and in S78 the dial buffer 266
Stores dial valid data, that is, numbers. Next, S79 is executed to determine whether or not dial valid data is stored in the dial buffer 266. If the call transmission command transmitted from the personal computer 4 does not include a digit string for some reason, there is no dial valid data in the dial buffer 266 and S79
Is NO, and it is determined in S85 whether or not the dial command, that is, the instruction from the personal computer 4 is to make a telephone call. Here, since transmission of facsimile data is instructed, the determination result in S85 is NO, and an error command is output to the personal computer 4 in S84.

If there is dial valid data in the dial buffer 266, the decision result in S79 is YES, and S80
After the line is closed in step S81, S81 is executed, and dial transmission processing is performed. For example, a pulse signal indicating a facsimile number specified by the personal computer 4 is transmitted to the external line 2.
24, and it is then determined in S82 whether or not the dial transmission processing has been performed without any trouble. For example, if the partner device 114 is busy, or if the partner device 114 is busy due to a confusion in the exchange even if it is not in use, the dial transmission process is hindered. Is NO in S82
, The line is opened in S83, and an error command is output to the personal computer 4 in S84.

If the dial transmission processing is performed without any trouble, S
The determination result at 82 is YES, and a determination is made at S88 as to whether the command is a call transmission command. In this case, since the command is a call transmission command, the determination result in S88 is YES, and in S89, the dial transmission process ends and the type of data to be transmitted is set. The PC data transmission flag 268 is set.

When transmitting the PC data, the PC data transmitted from the personal computer 4 to the facsimile apparatus 2 is
14 is transmitted. When the PC data is transmitted, the facsimile apparatus 2 receives encoded image data from the personal computer 4, receives commands output from the personal computer 4, sends data from the facsimile apparatus 2 to the personal computer 4, transmits commands, and transmits the facsimile apparatus 2. From partner device 11
The transmission of the encoded image data to the device 4, the output of the command, and the reception of the command from the partner device 114 are all performed by interrupt processing.

The image data reception P / S interrupt processing at the time of data transmission of the facsimile apparatus 2 will be described based on the program shown in FIG. In this interrupt processing, the encoded image data is transmitted from the personal computer 4 and the P / S reception data buffer 2
The process is executed every time 8-bit data is stored in 46, and the encoded image data is stored in the FAX-side transmission data buffer 256.

After one byte of data is extracted from the P / S reception data buffer 246 in S101,
At 02, it is determined whether the DLE flag 272 is set. The DLE flag 272 is reset in the initial setting, and the determination result in S102 is N
In step S103, it is determined whether the data is <DLE>. If not <DLE> data, the determination result in S103 is NO, and in S104, E
It is determined whether or not the data is OL (End of Line) data. The EOL data is data representing the end of one line. If the EOL data is not EOL data, the determination result in S104 is NO.
The data is stored in the FAX-side transmission data buffer 256 in S106.

If it is EOL data, the result of the determination in S104 is YES and S105 is executed, in which the number of bits of the coded image data between the EOL data and the immediately preceding EOL data is counted. Then, if the number of bits is such that the encoded image data of one line is transmitted in a time shorter than the minimum transmission time, 0-bit data is stored in the FAX-side transmission data buffer 256, and based on the data transmission speed. The set minimum transmission time of one line is maintained. This 0 bit data is referred to as 0 fill data.

In S105, it is detected whether or not there is room to store data in the FAX-side transmission data buffer 256. If the data cannot be stored any more, the output of the RTS control signal line is set to a state in which transmission of PC data is prevented. Is done. The personal computer 4 watches the output of the RTS control signal line when transmitting data to the facsimile machine 2, and if the output is blocked, the transmission of data to the facsimile machine 2 is interrupted. When the data received by the facsimile apparatus 2 is sent to the partner apparatus 114, the FAX-side transmission data buffer 256 returns to a state where the data can be stored again. In that case, the output of the RTS control signal line is P
The transmission of the C data is allowed, and the personal computer 4 can restart the transmission of the data to the facsimile apparatus 2.

If the data is <DLE>, the decision result in the step S103 is YES, and the DLE flag 272 is set in the step S107. Therefore, when the determination in S102 is performed next, the determination result is YES, and after the DLE flag 272 is reset in S108,
It is determined whether or not the next extracted data is <DLE>. If <DLE>, then in step S <b> 106, the <DLE> data is stored in the FAX-side transmission data buffer 256. If the data is not <DLE> data, the determination result in S109 is NO, and in S110, C
It is determined whether or not the data is AN (CANCEL) data.
If it is AN data, the cancel flag 274 is set in S111.

If the data is <ETX> data, the decision result in S110 is NO, and the decision result in S112 is YE
In S, S113 is executed, and the RTC PATTERN data is stored in the FAX-side transmission data buffer 256. RTC PATTERN data is data including six pieces of EOL data.

The command reception interruption processing from the personal computer 4 at the time of PC data transmission is performed according to the data transmission command reception P / S interruption processing program shown in FIG. First, in S121, the P / S reception data buffer 246
After extracting one byte of data from, it is determined in S122 whether the extracted data is CR data indicating a command delimiter. If the data is not CR data, the determination result in S122 is NO, and the data is stored in the PC-side reception data buffer 250 in S123.

If the data is CR data, the result of the determination in S122 is YES, the content of the command is interpreted in S124, and then a flag corresponding to the content of the command is set in S125.

The command output P / S interrupt processing to the personal computer 4 at the time of PC data transmission is the same as the above-described idle command output P / S interrupt processing, and a description thereof will be omitted.
The data transmission P / S interruption processing to the personal computer 4 is the same as the P / S interruption processing when facsimile data is transmitted from the facsimile apparatus 2 to the personal computer 4, and will be described later.

The coded image data received by the facsimile machine 2 from the personal computer 4 and stored in the FAX-side transmission data buffer 256 is written into the modem transmission data buffer 238 by an interruption process. Sent out.

Transmission and reception of encoded image data and commands between the facsimile apparatus 2 and the partner apparatus 114 (more precisely, the modem 214) are performed by interrupt processing. An interrupt terminal for this interrupt processing is provided separately from an interrupt terminal for transmitting and receiving encoded image data and commands between the personal computer 4 and the facsimile apparatus 2 and the personal computer. 4, transmission and reception of PC data and facsimile data, and transmission and reception of facsimile data between the facsimile apparatus 2 and the partner apparatus 114 can be executed in parallel.

There are a plurality of interrupt processing programs. As in the case of transmitting and receiving image data and commands between the personal computer 4 and the facsimile apparatus 2, the interrupt processing program to be executed for the interrupt signal is specified. An interrupt vector is set to perform the operation.

The interrupt signal is transmitted to the modem reception data buffer 2
It is issued when the 8-bit data is stored in 39 and when the modem transmission data buffer 238 becomes empty. The execution of the interrupt processing program in response to the generation of the interrupt signal is prohibited and permitted by setting and resetting the data reception interrupt prohibition flag 241 and the data transmission interrupt prohibition flag 242. The data reception interruption prohibition flag 241 is always in an interruption permission state. The data is ready to be received.

Regarding the transmission of image data or commands from the facsimile apparatus 2 to the destination apparatus 114, execution of the interrupt processing program is normally prohibited, and is permitted during actual transmission. Facsimile device 2 is partner device 1
When a command is received from 14 (the same applies to the case of receiving image data), only the setting of the interrupt vector is performed because the reception interrupt process is always permitted. The setting of these interrupt vectors and the setting and resetting of the data transmission interrupt prohibition flag 244 are performed during the interrupt program.

An interrupt for transmitting encoded image data to the partner device 114 (modem 214) will be described.

When the modem transmission data buffer 238 becomes empty, an interrupt signal is issued, and the data transmission image data transmission modem interrupt processing program shown in FIG. 17 is executed.
In S131, it is determined whether or not preparation for transmitting the encoded image data has been completed in the FAX-side transmission data buffer 256. This determination is made based on whether or not one line of encoded image data has been prepared in the FAX-side transmission data buffer 256. The FAX side transmission data buffer 25 determines whether or not encoded image data for one line has been prepared.
6 indicates whether EOL data is stored following the encoded image data. S1 if preparation is complete
The determination result at step S31 is YES, and at S132 the FA
The coded image data is extracted one byte at a time from the X-side transmission data buffer 256 and stored in the modem transmission data buffer 238 in S133.

Next, it is determined whether or not the data written in S134 is data indicating the end of RTC PATTERN. Since the RTC PATTERN data is composed of six pieces of EOL data, here, it is determined whether or not the data written in S134 is the sixth piece of EOL data. S13
The determination result of No. 4 is initially NO, and the execution of the program ends.

While the EOL data is stored in the FAX transmission data buffer 256 after the data is encoded, the determination result in S131 is YES, and the encoded image data stored in the FAX transmission data buffer 256 is YES. Is written into the modem transmission data buffer 238 byte by byte. Also, 6 representing RTC PATTERN data
When the pieces of EOL data are stored, the determination result in S131 is YES, and the EOL data is written to the modem-side transmission data buffer 238. If the sixth EOL data is written to the modem-side transmission data buffer 238, the determination result in S134 becomes YES. RT
This is the end of the C PATTERN data and the end of the transmission of one page of encoded image data.
An interrupt vector for outputting a PS signal is set.

If preparation for transmission of encoded image data is not completed in the reception data buffer 256 on the facsimile side, S
The determination result at 131 is NO, and in S136, 1-bit 0 fill data is set in the register. The 0 fill data is written between the EOL data and the encoded image data, and after writing, a timer provided in the CPU 200 is set in S137. Next, after the count value of the 0 fill data counter 340 is increased by 1 in S138, it is determined in S139 whether the set time has elapsed.

The 0 fill data written to the register is written to the modem transmission data buffer 238. FA
Even if there is no data to be sent to the X-side transmission data buffer 256, the line is not disconnected. However, when a predetermined number of 0 fill data has been written or before the set time has elapsed,
Yes at S139 Yes YE at S140
At S141, 0 fill data counter 3 is set at S141.
40 is reset, a cancel flag 274 is set in S142, and the communication is terminated. FAX
This is because the absence of data for a long time in the side transmission data buffer 256 is abnormal.

Output of a command to the modem 214 at the time of data transmission will be described based on a data transmission command output modem interrupt processing program shown in FIG. At the time of data transmission, various commands are transmitted and received between the facsimile machine 2 and the modem 214 as described based on the PC data transmission sequence chart.
Although the interrupt processing program is set for each output of each command, D is determined based on FIGS. 18 (a) and 18 (b).
The output of the CS signal and the TCF signal will be described representatively.

S151 of the program shown in FIG.
The DCS signal at the modem transmit data buffer 238
, The interrupt vector is set to T in S152.
Set to CF output. This is because the TCF signal is output after the DCS signal. At the time of output of the TCF signal, the TCF signal is output in S153 of the program shown in FIG.
After writing the signal to the modem transmit data buffer 238,
After the interrupt vector is set to CFR reception in S154, the data transmission interrupt prohibition flag 24 is set in S155.
4 is set to inhibit execution of the data transmission interrupt process.

The reception of a command from the modem 214 during data transmission will be described with reference to the data transmission command reception modem interrupt processing program shown in FIG. There are a plurality of types of commands to be received as well as commands to be output, and an interrupt processing program for reception is set for each of them. In FIG. 19, an interrupt processing program for receiving a DIS signal is representatively shown. explain.

This interrupt processing program is executed when 8-bit data is stored in the modem reception data buffer 239 and the interrupt signal is generated in a state where the interrupt vector is set to receive the DIS signal. Execution is started.

First, it is determined in S161 whether a command has been received. This determination is made based on whether or not data is stored in the modem reception data buffer 239. If the data is stored, the determination result in S161 is YES, and in S162, the command is a CSI (Called Subsc
riber Identification) signal (signal indicating the facsimile number of the facsimile machine on the receiving side).

The execution of this program is started when 8 bits of data are stored in the modem reception data buffer 239 as described above, and when the execution of this program is started, the modem reception data buffer 239 is started.
Is the data indicating the type of the signal, and it can be determined whether or not the transmitted signal is a CSI signal. In the facsimile machine 2,
Even if a CSI signal is transmitted, it is not used, but is discarded as it is, and the TSI (Transmit Station I
dentification) signal is not output. Therefore, if the command is a CSI signal, the determination result in S162 is YES, and the execution of the program ends.

If the DIS signal is transmitted, the determination result in S162 is NO, and the determination result in S163 is YES,
In S164, the data is stored in the FAX-side reception data buffer 254. Subsequently, in S165, it is determined whether or not the stored data is the data indicating the end of the command, that is, the end of the DIS signal. If the determination result is YES, S166 and the subsequent steps are executed, but NO is performed.
If so, the process ends, and the execution from S161 is repeated again. Note that once the DIS signal is FA
If stored in the X-side received data buffer 254, S16
The determination result of 3 is YES, and the transmitted data is stored in the FAX-side reception data buffer 254 until the DIS signal ends.

In S166, it is determined whether or not the facsimile apparatus 2 and the partner apparatus 114 are models capable of transmitting data based on the DIS signal of the FAX-side received data buffer 254. If possible, it is determined in S167 whether or not there is data to be transmitted.
This determination is made by using the read image data read by the image reading device 42 in the facsimile
4 is transmitted depending on whether the original 90 is set or not. When the PC data is transmitted to the partner apparatus 114, a call transmission command (ATD + STRING) instructing the transmission of the PC data is sent to the personal computer 4. This is performed depending on whether or not it has been transmitted from. If there is data to be transmitted, in S168, the transmission parameters between the facsimile apparatus 2 and the partner apparatus 114 are determined, and the contents of the DCS signal are set. Next, after the interrupt vector is set to output the DCS signal in S169, the process proceeds to S17.
At 0, execution of interrupt processing for data transmission is permitted.

If the command is not obtained within the preset time, the result of the determination in S161 is NO, the result of the determination in S171 is YES, and the line is opened in S172 to terminate the communication. If it is within the time, S173 is executed,
The interrupt vector is set for DIS reception.

If the data to be transmitted is not in the FAX-side transmission data buffer 256, the determination result in S167 is NO.
Then, after the interrupt vector is set to the output of the DCN signal in preparation for the release of the line in S174, the data transmission is permitted in S175.

The transmission of PC data will be described based on the PC data transmission program shown in FIG.

In S201, PC data transmission flag 2
It is determined whether or not PC data is to be transmitted based on whether or not 68 is set. PC data transmission flag 26
If 8 has been set, the determination result in S201 is YES, and in S202 and S203, after outputting and receiving the CNG signal and the like after the phase A dial transmission, the phase B is performed in S204 and the facsimile is performed. Transmission parameters between the device 2 and the partner device 114 are set. Here, since the transmission is PC data, the transmission parameter of the personal computer 4 is changed to the facsimile apparatus 2.
Are considered as transmission parameters. The transmission parameters of the personal computer 4 are stored in the PC transmission parameter buffer 263, and the facsimile apparatus 2 sets the level of the transmission parameters between the personal computer 4 and the partner apparatus 114 to the highest common level. .

Next, in S205, it is determined whether or not an error has occurred. The error means that a DIS signal cannot be received in phase B, or that a command cannot be transmitted between the facsimile apparatus 2 and the partner apparatus 114 at a command transmission rate of 2400 bps. Is YES, and an error process is performed in S206. Error processing is to PC 4 (+ FHNG: 2)
Outputting a signal to notify the end of communication due to occurrence of an error, outputting a DCN signal to the partner apparatus 114, and the like.
In step S207, the line is released, and the execution of the program ends.

If there is no error, the decision result in S205 is N
O, and the phase C is executed. However, the reception of the PC data from the personal computer 4 and the transmission of the encoded image data to the partner device 114 are both performed by the interrupt processing. Only determines whether or not encoded image data for one page has been transmitted from the personal computer 4 as described below.

If the decision result in S205 is NO, S
At 208, a determination is made whether the transmission has been canceled. This determination is made based on whether or not the cancel flag 274 is set.
The determination result at 208 is YES, and S206, S207
Is executed, and the communication ends. Cancel flag 274
Is transmitted in response to an instruction to cancel by pressing the cancel key on the personal computer 4 or as described above.
It is set when the state where there is no encoded image data in the side transmission data buffer 256 continues for the set time or while the set number of 0 fill data is written,
In either case, the communication is terminated.

In S208, the operation panel 1
It is also determined whether or not the stop key 164 provided on the second key 2 is pressed, and if the stop key 164 is pressed to instruct the end of data transmission, the transmission is terminated.

If not cancel or stop, S2
The determination result of 08 is NO, and it is determined in S209 whether the transmission of one page of data is completed. This determination is based on the fact that the RTC is included in the data supplied from the fax transmission data buffer 256 to the modem transmission data buffer 238.
This is performed depending on whether or not there is PATTERN data.
From the parallel / silyl conversion circuit 240 by interrupt processing
S2 if TC PATTERN data is captured
The result of the determination in 09 is eventually YES, and a determination is made in S210 as to whether or not the FAX-side transmission data buffer 256 is empty. If data indicating the end of one page is detected and the FAX-side transmission data buffer 256 is emptied and all data has been transmitted, the determination results in S209 and S210 are both YES, and the PC 4 is OK in S211. A signal is output. RTC PATTE
Even if the FAX-side transmission data buffer 256 becomes empty before RN data is obtained, an OK command is output so that transmission of image data does not end in the middle of one page.

Next, phase D is executed.
At 12, it is determined whether or not there is next page data. If there is next page data, the determination result in S212 is YES, and in S213, it is determined whether the transmission parameter is changed. If there is no change, the determination result in S213 is NO, and the transmission and reception of the phase D signal are performed in S214 to S222.

Note that the facsimile machine 2 is
When waiting for the MCF signal and (AT + FDT) signal from S.4, the timer is set, and at S217, S22
At 1, it is determined whether or not the set time has elapsed. If the MCF signal and the (AT + FDT) signal are not obtained within the set time, the error processing of S206 is performed and the communication ends. If the MCF signal and the (AT + FDT) signal are obtained within the set time, the execution of the program returns to S208, and the phase C is executed.

If there is a change in the transmission parameters, the determination result in S213 is YES, and in S223, the partner device 1
14, an EOM (End of Messange) signal is output. Next, S224 to S227 are executed, and MC is set within the set time.
If the F signal is obtained, the execution of the program returns to S204, and after setting the transmission parameters with the partner device 114, the next page data is transmitted.

If there is no next page data, the determination result in S212 is NO, and in S228 to S232, phase D and phase E (line release) at the end of transmission are performed, and the data transmission ends.

When the data transmission to one partner apparatus 114 is completed, the personal computer 4 sends the (+ FH) from the facsimile apparatus 2 in S56 as described above with reference to the PC data transmission program of FIG.
NG: 0) After receiving the signal, it is determined in step S57 whether or not there is another party to which the PC data is to be transmitted. If there is another party to transmit, a call transmission command is output to the facsimile apparatus 2, and Is sent to the facsimile machine 2 and sent to a different partner device 114. As described above, when PC data is transmitted to a plurality of transmission destinations including transmission to the facsimile apparatus 2, since the PC data is supplied from the personal computer 4 to the facsimile apparatus 2 for each transmission destination,
It is not indispensable to store all the PC data in the facsimile machine 2, and the capacity of the buffer for storing the PC data can be reduced or the capacity can be prevented from being full.

Next, transmission of PC data to the facsimile apparatus 2 will be described.

In the transmission program shown in FIG. 14, the number of digits of the digit string output from the personal computer 4 to the facsimile device 2 is the same as the number of digits of the facsimile number stored in the own facsimile number buffer 264, and all the digits are one. If they match, or if the numbers of digits differ but the numbers of the common digits all match, S75 or S7
The result of the determination in Step 4 is YES, S76 is executed, and the print flag 276 is set. The fact that the number string supplied from the personal computer 4 matches the number string stored in the facsimile apparatus 2 means that the facsimile apparatus 2 itself has been instructed as the transmission destination of the PC data. In this case, the personal computer 4 sends a P
The PC data is sent to the facsimile machine 2 as in the case of transmitting the C data, and the PC data is recorded in the facsimile machine 2.

When the recording device 29 of the facsimile machine 2 is a PC
A procedure for recording data will be described with reference to a sequence chart shown in FIG.

The personal computer 4 outputs a signal (AT + BRPR =?) Inquiring about the capability of the facsimile apparatus 2 so that the recording apparatus 29 of the facsimile apparatus 2 records the PC data. On the other hand, the facsimile apparatus 2 returns the resolution and the type of paper width by a signal (BRPR: vr, wd), and the personal computer 4 transmits a signal (AT + BRPR = vr, wd) for setting the common and highest level to the recording level. Output to device 2. The facsimile machine 2
When an error such as a cover of the apparatus is opened or a recording paper is jammed, a signal (BR) indicating the error is generated.
NG: COVEROPEN, BRNG: PRINTER
JAM) to the personal computer 4.

When recording start is instructed from the personal computer 4,
Signal exchange required for recording and transmission of PC data are performed. As can be seen from comparison with the sequence chart at the time of PC data transmission shown in FIG. 11, these are exchanged between the personal computer 4 and the facsimile machine 2 at the time of PC data transmission. P between
This is the same as the transmission of C data. Therefore, when the facsimile apparatus 2 is specified as the transmission destination, the PC data transmission procedure from the personal computer 4 to the facsimile apparatus 2 except for the data transmission from the facsimile apparatus 2 to the destination apparatus 114 in the PC data transmission procedure. Is performed, and the PC data can be recorded on the facsimile apparatus 2 as part of the transmission of the PC data. At the time of PC data recording, the facsimile apparatus 2 converts the encoded image data
2 is received in accordance with the recording-time image data reception P / S interrupt processing program shown in FIG. FIG. 23 for recording of PC data
When the PC data recording program shown in (1) is executed, the interruption vector takes out PC data from the P / S reception data buffer 246 by the recording-time image data reception I / O interruption processing program, and
This is because it is set to be stored in 0. Receiving commands from PC 4 during PC data recording, PC 4
The output of the command and the transmission of the data are the same as the transmission of the PC data, and the description is omitted.

This interrupt processing program is executed every time 8 bits of encoded image data are transmitted from the personal computer 4. However, since the data is not transmitted to the partner apparatus 114, the received encoded image data is The 0-fill data stored in the PC-side reception data buffer 250 to maintain the transmission time of one line is not stored. When storing the encoded image data in the PC-side reception data buffer 250,
It is determined whether or not the PC-side received data buffer 250 has a capacity for further storing data. If there is no capacity, the output of the RTS control signal line is set to the L state.
Other parts are the same as those of the image data reception P / S interrupt processing program at the time of data transmission shown in FIG. 15, and a description thereof will be omitted.

When the print flag 276 is set in S76 of the transmission program shown in FIG.
The determination result of S301 of the PC data recording program shown in FIG. 23 is YES, and the signals exchange required for the PC 4 to receive the encoded image data is performed by executing S302 to S306. Next, in step S307, the interrupt vector is set to receive the coded image data, and the coded image data can be stored in the PC-side received data buffer 250. Thus, every time the encoded image data is transmitted from the personal computer 4, the interrupt processing program shown in FIG. 22 is executed, and the encoded image data is stored in the PC-side received data buffer 250.

In the PC data recording program, P
The decoding processing of the PC data stored in the C-side received data buffer 250 is performed. Therefore, the initialization process for one page is performed in S308 of the PC data recording program. The head address of the first page of the encoded image data stored in the PC-side received data buffer 250, the resolution of the encoded image data, the encoding method, and the paper width are stored in the one-page data buffer 277 of the RAM 202. .

Next, S309 is executed, the coded image data is fetched one byte at a time from the PC side reception data buffer 250, and it is determined in S310 whether the fetched data is EOL data. One page of data starts with EOL data, but unnecessary data other than image data and EOL data may be added to the head of the data. , S309, and S310 are repeatedly executed.

If the EOL data is taken out, the decision result in the step S310 is YES, and in the next step S311 the RAM
Among them, the decoding buffer 270 used for the operation when decoding one line is cleared. Then S312
In step (1), data is extracted from the PC-side reception data buffer 250 one byte at a time. The 1-byte data is copied to the decoding buffer 270, and the coded image data is left in the PC-side reception data buffer 250. When recording is performed based on the decoded image data, even if the recording is interrupted due to a paper jam or the like, the encoded image data is left so that the recording can be performed again. The encoded image data is deleted every time recording of one page is completed.

Next, S313 is executed, and after the fetched data is decoded, it is determined in S314 whether or not one code is completed. One code data may be represented by a number of bits exceeding one byte. In this case, the result of the determination in S314 is NO, and the program returns to S312. On the other hand, if the data of one code is completed, the result of the determination in S314 is YES and S315 is executed to determine whether or not the extracted data is EOL data. This determination result is NO at the beginning, and then it is determined in S316 whether the end data is one page. Decoding buffer 2
It is determined whether or not there are six pieces of EOL data from the data stored in 70. This determination result is initially NO, and whether or not the data extracted in S317 is image data is determined. A determination is made. This determination result is YES, and one-code decoded image data is stored in the recording temporary buffer 260 in S318.

As described above, the PC-side received data buffer 25
Data is extracted and decoded byte by byte from 0, and E
If OL data is obtained, the determination result in S315 becomes YES and S319 is executed, and the decoded image data stored in the recording temporary buffer 260 is transferred to the recording buffer 262.

When all the data of one page is fetched and the end data of one page is fetched, when the first one of the six EOL data is fetched, S is set.
The determination result at step 315 is YES, and the decoded image data for one line decoded so far is stored in the recording buffer 262.
Transferred to When the second to fifth EOL data is taken out, the EOL data is neither data indicating the end of one line nor data indicating the end of one page.
5, the determination results in S316 are all NO, and S31
At 7, it is determined whether or not the data is image data.
Since the data is not image data, the determination result in S317 is also NO, and the program returns to S312. This is to prevent EOL data from being stored in the recording temporary buffer 260.

If six pieces of EOL data are taken out, S3
The determination result at 16 is YES, and S320 is executed.
The drum motor for rotating the photosensitive drum 30 of the recording device 29 is started, and the end processing of one page is performed. S30
The data set at 8 is cleared. When the reception of the data of one page is completed, S321 is executed.
, The P / S interrupt vector is set to command reception, and the PC 4 is ready to receive commands. Then, the phase D is performed in S322 to S324, and if there is the next page data, the program execution returns to S305 to receive and record the next page data.
The reception of the C data, the signal (+ FHNG: 0) indicating the end of the communication, and the OK command are output to the personal computer 4, and the execution of the program ends.

When one page of decoded image data is stored in the recording buffer 262, a recording interruption process is executed, and the recording device 29 records one page of data. The encoded image data is deleted every time recording of one page is completed.

Next, a case where the facsimile apparatus 2 makes a call in accordance with an instruction from the personal computer 4 will be described.

If a dial command (ATD + STRING +;) for instructing to make a call is transmitted from personal computer 4, the result of the determination in S71 of the transmission program shown in FIG. 14 is YES, and S77 to S79 are executed.
If the dial command does not include dial valid data, the determination result in S79 is NO, the determination result in S85 is YES, and S86 and S87 are executed, and the monitoring process is performed. The line is closed and the state of the line is made known to the operator through the speaker 226. In this state, it is awaited that the line is opened. The line is released by once picking up the receiver 11 from the hook and then placing it or pressing the hook key 188 once in the monitor state.

If there is dial valid data in the dial command, the decision result in S79 is YES, and S80-S
82 is executed. If the dial transmission processing is performed without any trouble, the determination in S87 is made. However, the determination result is NO, and the PC / TEL flag 278 indicating that a call is to be made in response to an instruction from the personal computer 4 is set in S90.

As a result, the decision result in S351 of the PC / TEL program shown in FIG. 24 becomes YES, and S352
, A determination is made as to whether or not the handset 11 has been picked up. The transmission of the dial valid data calls the communication partner, and it is determined whether or not the handset 11 is actually picked up and the call is started. If the receiver 11 is not picked up and the line release is instructed, the determination result in S353 becomes YES, and
At 363, the line is released and the communication is terminated.

If the receiver 11 is picked up, it is possible to talk with a communication partner. If start key 162 is pressed while receiver 11 is still picked up, the determination result in S354 becomes YES. Pressing of the start key 162 is an instruction to transmit or receive facsimile data.
It is determined whether or not the original 90 is set in the
If the original 90 is not set, the start key 16
Pressing 2 means reception of facsimile data transmitted from the other party, and S356 is executed to receive facsimile data. The reception of the facsimile data will be described later.

If the original 90 is set, the judgment result in S355 is YES. In this case, pressing of the start key 162 is an instruction to transmit the read image data obtained by the image reading of the image reading device 42 to the other party, and the image is read by executing S357, and the read image data is read. It is encoded and transmitted to the other party. The reading, encoding and transmission of these images are already known, and the description is omitted. If the start key 162 is not pressed while the receiver 11 is picked up and a call is being made, the determination result in S354 is NO, and in S358, it is determined whether the ATD signal is transmitted from the personal computer 4. The transmission of the ATD signal is an instruction to transmit the PC data to the other party, and in step S359, the PC data is transmitted from the personal computer 4 to the facsimile apparatus 2 and transmitted to the other party. Since this data transmission is performed according to the PC data transmission program described above with reference to FIG. 20, the description will be omitted.

A call transmission command (ATD) is sent from the personal computer 4.
If (+ STRING) is transmitted, the determination result in S358 is NO, and the determination result in S360 is YES. The other party device 114 other than the other party of the PC data in the personal computer 4
The timer transmission to is set, the transmission time may be reached during a call, and a call transmission command may be transmitted. In this case, if data transmission is started, the call is forcibly In step S361, an error command is output to the personal computer 4, so that the call can be continued.

Next, step S362 is executed to determine whether or not the handset 11 has been set. If the handset 11 has not been set, the program returns to step S354. If the handset 11 is put down, the result of the determination in S362 is YES, the line is opened in S363, and the communication ends.

Next, reception of facsimile data transmitted from the partner device 114 will be described.

The manner of receiving facsimile data differs depending on which output mode is selected. PC ONL where PC 4 receives facsimile data
When the Y mode and the PC priority mode are selected, the facsimile device 2 transmits the facsimile data received from the partner device 114 to the personal computer 4. A procedure for receiving facsimile data in this case will be described with reference to a sequence chart shown in FIG.

For receiving facsimile data, personal computer 4 indicates whether or not facsimile data can be received by facsimile apparatus 2, that is, whether or not facsimile data buffer 328 provided in personal computer 4 has room for further data. Signal (AT + FCR (Facsimile Ca
pability to Receive) = X). If the value of X is 0, the facsimile data buffer 328 is full and cannot receive data, and if it is 1, it indicates that data can be received. On the other hand, the facsimile device 2 outputs an OK command to the personal computer 4, and the personal computer 4 further sends a signal (AT + FLID (F) representing the facsimile number to the facsimile device 2.
acsimile Local Identification)), and the facsimile apparatus 2 outputs an OK signal to the personal computer 4. These communications take place in the idle state.

A facsimile number is registered in the facsimile apparatus 2. For example, when one facsimile apparatus 2 is used by a plurality of users and a different facsimile number is assigned to each user. In some cases, the facsimile number registered in the facsimile apparatus 2 is different from the facsimile number assigned to the user who transmits data. Therefore, the personal computer 4 tells the facsimile machine 2 the facsimile number,
It is possible to output a CSI signal described later. The (AT + FLID) signal is output to the facsimile machine 2 even when only one type of facsimile number is set for one facsimile machine 2.

The personal computer 4 further outputs a signal (AT + FDCC) indicating the level of its own transmission parameter to the facsimile apparatus 2, and the facsimile apparatus 2 outputs an OK command to the personal computer 4 and stores it in the PC transmission parameter buffer 263. . When the CI signal is transmitted from the partner apparatus 114, the facsimile apparatus 2 outputs a ring command (RING) to the personal computer 4, and the personal computer 4 outputs an ATA signal to the facsimile apparatus 2 to confirm that facsimile data can be received. Inform. The facsimile apparatus 2 receives a CED signal and a CSI (Called Subscriber Identifi
cation) signal (a called terminal identification signal, that is, a signal indicating the number of the facsimile apparatus 2). Phase A is from the reception of the CI signal to this point.

Next, phase B is performed, and facsimile apparatus 2 transmits the DIS signal to partner apparatus 114. In phase B, the signal exchanged between facsimile apparatus 2 and partner apparatus 114 is the same as the signal exchanged between facsimile apparatus 2 and partner apparatus 114 during facsimile data transmission, but in the opposite direction. Since this is only the case, the description is omitted. In addition, TSI (Transmit S
tation Identification) signal is a signal representing the facsimile number of the partner device 114, but the facsimile device 2 does not use the TSI signal even if it is transmitted.
It is read as it is. In the interrupt processing program for receiving the DCS signal at the time of receiving the facsimile data, no processing is performed even if the TSI signal is transmitted.

In phase B, facsimile apparatus 2
Outputs a signal representing the content of the signal to the personal computer 4 every time a signal is received from the partner device 114, and outputs a signal corresponding to the signal to the partner device 114 each time a signal is received from the personal computer 4. . Among signals transmitted from the personal computer 4 to the facsimile apparatus 2, (AT + FDR (FacsimileD
ata Receive) signal is a signal indicating the start of facsimile data reception, and the <DC2> signal is a signal indicating that the personal computer 4 is ready to receive facsimile data.

After transmitting the <DC2> signal, phase C is performed, and the facsimile apparatus 2 receives the facsimile data from the partner apparatus 114 and transmits it to the personal computer 4. When the other device 114 transmits the facsimile data of one page, the phase D is performed, and the MPS signal, the EOP signal, or the E signal is transmitted.
The OM signal is transmitted to the facsimile machine 2. Also in phase D, the signals exchanged between facsimile apparatus 2 and partner apparatus 114 are the same as the signals exchanged at the time of facsimile data transmission, but only in the opposite direction. A signal (+ FE) indicating whether or not there is data for the next page is sent to the personal computer 4.
T: 0), an OK command, and an (AT + FDR) signal. If there is next page data and the transmission parameters are not changed, the process returns to the beginning of phase C to receive facsimile data. If there is a change in the transmission parameters, the process returns to the beginning of the phase B, and after the transmission parameters are set again, facsimile data is received.

If there is no next page data, phase E is performed, the line is released, and the communication ends.

The facsimile data transmitted from the partner device 114 is stored in the modem reception data buffer 239 of the modem 214, and the facsimile device 2 interrupts the facsimile data and transmits
54. Further, the facsimile apparatus 2 transmits the facsimile data of the facsimile reception data buffer 254 to the personal computer 4 by interruption.

These interrupt processings are respectively the image data reception modem interruption processing program at the time of FAX data reception shown in FIG. 26, the command reception modem interruption processing program at the time of FAX data reception shown in FIG. 27, and the FAX data reception program shown in FIG. Hour command output modem interrupt processing program, FIG. 29
Is performed based on the image data transmission P / S interrupt processing program at the time of FAX data reception shown in FIG. When receiving facsimile data, the facsimile apparatus 2 receives data from the personal computer 4 based on the FAX data reception data reception P / S interrupt processing program shown in FIG. The transmission and reception of commands between the facsimile machine 2 and the personal computer 4 at the time of receiving facsimile data are performed in the same manner as in the reception of PC data by the facsimile machine 2 in FIGS.
Since it is performed based on the program shown in FIG.

The image data reception modem interruption processing program at the time of FAX data reception shown in FIG. 26 is executed every time facsimile data is stored in the modem reception data buffer 239. After one byte of the facsimile data stored in the modem reception data buffer 239 is extracted in S371, it is determined whether or not the extracted data is 0 data in which all of the 8 bit data are 0 in S372. Done. S372 if it is image data
Is NO, the 0 data counter 342 is reset in S373, and then F is determined in S374.
Data is stored in the AX-side reception data buffer 254.

Next, S375 is executed, and RTC PA
A determination is made as to whether TTERN has ended. FA
RTC PATTER in X-side receive data buffer 254
It is determined whether or not the sixth additional data representing the N data has been stored. RTC PATTERN
If the data ends, S376 is executed, and the interrupt vector is set for receiving the subsequent command.

If the data fetched from the modem reception data buffer 239 is 0 data, the decision result in S372 is YES, and in S377 the 0 data counter 3
The count value C of 42 is increased by one. Then S37
8 is performed, and it is determined whether or not the count value C is 1. If the 0 data is detected for the first time, the determination result of S378 is YES, and the 0 data is stored in the FAX-side reception data buffer 254. 0 data continuously 2
If more than one data has been extracted, the determination result in S378 becomes NO, and the 0 data after the second data is not stored in the FAX-side reception data buffer 254.

For example, the EOL signal is composed of 11 pieces of 0-bit data and one piece of 1-bit data. In order to store the EOL signal in the FAX-side reception data buffer 254, one piece of 0 data is FAX. This is stored in the side reception data buffer 254.
As described above, when 0 fill data is inserted to maintain the minimum transmission time of one line, two or more 0 data may be extracted. Such 0 data is fax
It is not necessary to store the data in the side reception data buffer 254, and if the count value C2 is 2 or more, the execution of the program is terminated as it is. If image data is taken out after the 0 data, the determination result in S372 is NO, and the 0 data counter 342 is reset in S373.

The FAX data reception command reception modem interruption processing program and the FAX data reception command output modem interruption processing program respectively set a plurality of types according to the type of command received by the facsimile apparatus 2 and the type of command output. Have been. The order of command reception, output, and data reception at the time of FAX data reception is predetermined as shown in the sequence chart of FIG. 25, and the interrupt processing program for command reception corresponds to the content of the received command. And an interrupt vector for outputting the next command or receiving the next command. The interrupt processing program for outputting the command outputs a predetermined command, and outputs and outputs the next command. Alternatively, an interrupt vector for reception is set. The setting of the interrupt vector for data reception is also performed after the output of the CFR signal in the interrupt processing program for transmitting the CFR signal.

The interrupt processing program shown in FIG. 27 is a program for receiving the TCF signal after the facsimile apparatus 2 has received the DCS signal. In the interrupt processing program for receiving the DCS signal, the interrupt vector is set to execute the interrupt processing program shown in FIG. 27 when the DCS signal is received. If a command is transmitted thereby, S381 is executed and a TCF signal is received. Steps S381 and S382 are repeatedly executed until the reception of the TCF signal is completed, and when the reception is completed, the determination result in S382 becomes YES, and in S383, it is determined whether the training check has been successfully performed. If it is performed satisfactorily, the procedure may proceed to the next step. After the interrupt vector is set to the vector designating the program for outputting the CFR signal in S384, the execution of the data transmission interrupt process is permitted in S385. .

If the training check is not properly performed, the judgment result in S383 becomes NO, and S386
After the interrupt vector is set so that the interrupt processing program for outputting the FTT (Failure to Train) signal is executed, the execution of the data transmission interrupt processing is permitted in S387.

The interrupt processing program shown in FIG.
This is a program for outputting the R signal, and becomes executable when the interrupt vector is set to the CFR signal output in S384 of the program shown in FIG. S401
After the CFR signal is output in step S402, the interrupt vector is set to the vector instructing the image data receiving modem interrupt processing program at the time of FAX data reception in step S402, and the image data is received. Then S40
In 3, the execution of the data transmission interrupt process is prohibited, and only the reception of the image data is performed.

In S421 of the image data transmission P / S interrupt processing program at the time of FAX data reception shown in FIG. 29, it is determined whether or not the DLE flag 272 is set. If the DLE flag 272 is not set, the determination result in S421 is NO, and it is determined in S422 whether data is stored in the PC-side transmission data buffer 252.
The determination result in 2 is YES, and one byte of data is extracted from the PC-side transmission data buffer 252 in S423. Next, in S424, the data is <DLE>
It is determined whether or not the data is data. If the data is image data, the determination result in S424 is NO, and S426 is executed.
48.

If the extracted data is <DLE> data, the decision result in S424 is YES, and the DLE flag 272 is set in S425. for that reason,
Next, when the determination in S421 is performed, the determination result is Y
ES, and the DLE flag 272 is reset in S427.
E> The data is written and stored in the P / S transmission data buffer 248 in S426. This is because, unlike other data, the personal computer 4 cannot recognize the <DLE> data unless the data is output twice.

If there is no data in the PC-side transmission data buffer 252 even though the image data transmission P / S interruption processing program at the time of FAX data reception has been started, it is abnormal that this interruption is detected in S429. Execution of the processing program is prohibited.

As shown in FIG. 30, the data reception P / S interrupt processing program at the time of FAX data reception takes out one byte of data from the P / S reception data buffer 246 in S431, and then transfers the data to <DCC in S432.
2) It is determined whether the data is one of data and <CAN> data. Facsimile device 2 is partner device 1
When the facsimile data is received from the PC 14 and transmitted to the PC 4, the data transmitted from the PC 4
It should be a type of data. If it is other data, it is discarded as it is.
In step S433, the reception preparation completion flag 280 or the cancellation flag 274 is set. The reception of facsimile data will be described with reference to FIG. First, S50
At 1, the determination as to whether or not facsimile data has arrived is performed based on the FAX arrival determination program shown in FIG.

In S601 of the FAX incoming call determination program, it is determined whether the set incoming call mode is the MANUAL mode. If the mode is the MANUAL mode, the determination result in S601 is YES, and in S602, it is determined whether or not the CI signal is detected. If the CI signal has not been transmitted from the partner device 114, S
The determination at 602 is NO, and the execution of the program ends.

If the CI signal is detected, the result of the determination in S602 is YES, and it is determined in S603 whether or not the handset 11 has been picked up. If the receiver 11 is not picked up, the result of the determination in S603 is NO, and the program returns to S602, and the call is made until the transmission of the CI signal stops, that is, until the communication partner ends the communication or the receiver 11 is picked up. Let it continue to ring. If the communication partner ends the communication before the receiver 11 is picked up, the determination result in S602 becomes YES, and the execution of the program ends.

If the receiver 11 is picked up, the decision result in the step S603 is YES, and in the step S604, it is determined whether or not the start key 162 is pressed. If the user picks up the receiver 11 and hears no voice and hears the sound of a signal transmitted from the partner device 114 at the time of facsimile data transmission, such as a CNG signal, it is known that facsimile data is being transmitted. Is pressed to instruct reception of facsimile data. As a result, the determination result of S604 becomes YES, and the FAX incoming flag 282 is set in S605.

Unless the receiver 11 is picked up, the facsimile data cannot be received even if the start key 162 is pressed. The MANUAL mode is a mode in which the facsimile apparatus 2 is apparently used as a telephone, and the handset 11 is normally picked up.

If start key 162 is not pressed, S
The determination result at 604 is NO, and a determination is made at S606 as to whether or not the handset 11 is placed. Handset 11
Is not placed, the determination result in S606 is NO, and thereafter, S604 and S606 are repeatedly executed until the start key 162 is pressed or the handset 11 is placed. If the transmitted signal is a telephone signal, a telephone call is made. If the telephone call is completed, the handset 11 is put down. Therefore, the determination result in S606 becomes YES, and the line is opened in S607 to execute the program. Execution ends.

If the incoming mode is not the MANUAL mode, the determination result in S601 is NO, and in S608, it is determined whether the mode is the AUTO mode. AUT
If the mode is the O mode, the determination result of S608 is YES,
In S609, it is determined whether or not the CI signal is detected. If not, the determination result in S609 is NO and the execution of the program ends. If the CI signal is detected, it is determined in S610 whether or not the call has been made N times. The number of calls N is set in advance and RO
M, and if the call is made N times, S610
Is YES, and the FAX incoming flag 282 is turned ON in S611.

If the incoming mode is not the AUTO mode, S
The determination result at 608 is NO, and F / F is determined at S612.
It is determined whether the mode is the T mode. If it is the F / T mode, the determination result of S612 is YES, and S613
In the F / T mode, the FAX incoming call determination is performed according to the program shown in FIG.

FAX incoming call determination in the F / T mode FAX incoming call determination program will be briefly described in association with step numbers. In the F / T mode, a CI signal is detected (S701), and after paging is performed N times (S70).
2), when a CNG signal is detected (S703), when remote activation is performed (S704), after N calls,
When 20 seconds have elapsed after the elapse of 4 seconds without further picking up the receiver 11 or ending the communication with the partner device 114 (S708 to S713), the receiver 11 is picked up within 20 seconds. Is pressed, it is determined that facsimile data transmission is to be performed when reception of facsimile data is instructed (S714).

A telephone can be externally attached to the facsimile apparatus 2, a ringing tone is emitted, and when the receiver 11 of the external telephone is picked up, no voice is heard and facsimile data is transmitted. By transmitting the instruction signal from the external telephone, the facsimile device 2 can receive the facsimile data. This is remote activation.

If four seconds elapse after N calls, flag A is set, so that steps S709 to S711 are skipped and it is determined whether 20 seconds have elapsed.
During this time, if a busy tone is detected and it is detected that the communication partner has ended the communication, the flag A and the timer are reset, and the line is released (S705 to S70).
7).

If the communication partner does not end the communication and the receiver 11 is not picked up and the CNG signal is detected or the remote start is performed, or if 20 seconds have elapsed, it is determined that the facsimile data is to be transmitted. , Timer and flag A are reset and F
The AX incoming call flag 282 is set (S715, S7
16).

If the receiver 11 is picked up before it is determined that the facsimile data is to be transmitted, if the telephone signal is to be transmitted, the operator talks with the communication partner and the receiver 11
Is set, the flag A is reset and the line is released (S717 to S719). In addition, handset 1
In the case where facsimile data is transmitted, the start key 162 is depressed, the timer and the flag A are reset, and the FAX incoming flag 282 is set (S713-).
S717).

If the incoming mode is not the F / T mode,
If the mode is the D mode, the determination result in S612 of the FAX incoming call determination program shown in FIG. 32 is NO, and the determination result in S614 is YES, and in S615, the TAD shown in FIG.
In the mode, the FAX incoming call determination program is executed. TA
In the F-mode incoming call determination program at the time of the D mode, it is determined that the incoming fax is detected by detecting the CI signal (S75).
1), after calling is performed N times (S752), CNG
This is when a signal is detected (S753), when remote activation is performed (S754), or when no sound is detected for 8 seconds after the output of the response message (S76).
6).

In the TAD mode, a response message prompting recording of a message is transmitted from external answering machine 190 to the communication partner. The end of the response message can be detected by the elapse of 15 seconds after the elapse of 4 seconds after the N calls (S760 to S763), and after the elapse of 15 seconds, the timer is set again and 8 seconds are elapsed. The progress is measured (S764 to S766). Flag A after 4 seconds
Is set and the timer measures the lapse of 15 seconds (S762).
Is set, and the elapse of 8 seconds is measured by the timer (S764).

During this time, if voice is detected, it is determined that the transmitted signal is a telephone signal (S765). In this case, the flags A and B are reset when it is detected that the communication partner has terminated the communication by detecting the busy tone, or when the external answering machine 190 detects that the line has been released. To end the communication (S774 to S776).

If the receiver 11 is picked up while the FAX incoming call is being determined, a telephone call is made. If the telephone signal is not received, facsimile data is received by pressing the start key 162 (S767 to S773).

When the incoming call mode is set to the MC mode, the determination result in S614 of the FAX incoming call determination program shown in FIG. 32 is NO, and in S616, the FAX incoming call determination program in the MC mode shown in FIG. 35 is executed. . In the MC mode, it is determined that a fax is received when a CI signal is detected (S801), a call is made N times (S802), a CNG signal is detected (S803), or remote activation is performed. (S80
4) After outputting the response message, when no sound is detected for 8 seconds (S817), when the sound is detected and recording starts 30 seconds later (S827), the receiver 11 is picked up. Is when the start key 162 is pressed (S818, S819).

[0284] Only the processing when sound is detected and recording is performed is different from that in the TAD mode. If voice is detected, recording is started (S816, S82).
5, S826), if the communication partner ends the communication before 30 seconds elapse, the communication ends by executing S805 to S807. If 30 seconds elapse without ending communication, FA
X is determined to be an incoming call. For example, even when transmitting facsimile data, it may be determined that there is voice due to the occurrence of noise, and in such a case, the facsimile data may not be received. It is necessary.
If the voice signal was actually transmitted, a facsimile signal such as a CNG signal is transmitted to a communication partner during a subsequent facsimile data reception procedure, so that the communication partner must end the communication. Can be.

After the FAX incoming call determination is performed, S502 of the receiving program shown in FIG. 31 is next executed to determine whether or not a FAX incoming call has been received. This determination is made based on whether or not the facsimile reception flag 282 is set. If the call is a telephone and facsimile data is not transmitted, the facsimile reception flag 282 is not set, and the determination result in S502 is NO, and the program Is terminated.

Transmission of facsimile data and FAX
If the incoming flag 282 has been set, the determination result in S502 is YES, and in S503, it is determined whether data transmission to the personal computer 4 is possible. This determination is made based on whether or not the interface box 6 is connected. Whether or not the interface box 6 is connected can be determined from the output state of the connection line of the interface box 6 of the I / O port 210. If the interface box 6 is not connected, the result of the determination in S503 is NO, and S513 is executed to determine whether or not recording is possible.

The determination as to whether or not recording is possible is made on the recording paper 1
7 and whether the toner is sufficient for recording. The presence or absence of the recording paper 17 is determined by the recording paper sensor 2.
The detection signal of 0 indicates that the toner is present. If recording is possible, the determination result in S513 is YES, and the paper output flag 284 is set in S514. If recording is not possible, the determination result in S513 is NO, S511 is executed, and the proxy flag 286 is set. If the interface box 6 is connected, the determination result in S503 is YES, and in S504, it is determined whether the output mode is the paper output mode. If it is the paper output mode, the determination result of S504 becomes YES, and S51
3, the paper output flag 284 is set if recording is possible, and the proxy flag 286 is set in S511 if recording is not possible.

If the mode is not the paper output mode, the mode is the PC ONLY mode or the PC priority mode in which the personal computer 4 receives facsimile data, and a ring command is output to the personal computer 4 in S505. Then S506-S
508 is executed, and the set time (3 in this embodiment)
It is determined whether or not there is a response to the ring command from the personal computer 4 within the second). The response in this case is an ATA signal as described above with reference to the sequence chart shown in FIG. 25, and if there is a response within 3 seconds, S50
7 is YES, and the PC transmission flag 288 is set in S512. The fact that the personal computer 4 can receive facsimile data is stored.

For example, when the personal computer 4 is executing a program having a long execution time, the personal computer 4 cannot respond to a command transmitted from the facsimile apparatus 2,
No facsimile data can be received. Therefore, in this case, the determination result in S508 is YES,
In S509, the PC transmission flag 288 is reset. The fact that the personal computer 4 cannot receive facsimile data is stored.

As described above, even if the output mode of the facsimile apparatus 2 is set to the PC ONLY mode or the PC priority mode, if the receiving function is not selected in the personal computer 4, the receiving program is executed. The facsimile data cannot be received, and the facsimile device 2 cannot output the ATA signal to the facsimile device 2 even if the facsimile device 2 outputs the ring command to the personal computer 4. Therefore, also in this case, if there is no response from the personal computer 4 for three seconds, S
The decision result in 508 is YES, and in S509 P
The C transmission flag 288 is reset.

The ATA signal indicates that the interface box 6 is not connected, the power of the personal computer 4 is turned off, the capacity of the facsimile data buffer 328 of the personal computer 4 has no room for storing data, and the personal computer 4 receives a facsimile data program. Not running,
This is issued when there is no cause for receiving facsimile data, such as when a program other than the facsimile data receiving program is executed on the personal computer 4 and the facsimile data cannot be received. Signal.

Then, step S510 is executed to determine whether the output mode is the PC ONLY mode.
If the mode is the PC priority mode, the determination result in S510 is NO, and S513 is executed. In the PC priority mode, when the personal computer 4 cannot receive the facsimile data, the facsimile data is recorded and output by the recording device 29 of the facsimile apparatus 2;
The facsimile data is stored in the AX-side reception data buffer 254.

If the output mode is the PC ONLY mode, the decision result in S510 is YES, the proxy flag 286 is set in S511, and it is stored that the facsimile data is stored in the facsimile reception data buffer 254.

As is clear from the above description, the reason why the paper output flag 284 is set is that when the paper output mode is set, the PC 4 is not connected and recording is possible regardless of the output mode. In this case, the PC priority mode is set, but the personal computer 4 cannot receive facsimile data when facsimile data arrives and can record the facsimile data. If the paper output flag 284 is set, the received facsimile data is recorded from the beginning to the end in parallel with the reception (S526).

When the paper output mode is set but recording is not possible, the personal computer 4 is connected and the PC / ONLY mode is set. If the PC 4 cannot receive facsimile data when receiving data,
The PC priority mode is set, but the personal computer 4 cannot receive facsimile data when facsimile data arrives and cannot record. When the proxy flag 286 is set, the received facsimile data is stored in the FAX-side reception data buffer 254 from the beginning to the end. Although the paper output mode is selected, the fact that the recording device 29 cannot perform recording and the data is stored in the FAX-side reception data buffer 254 is also a type of the alternate reception (S525).

When the PC ONLY mode is set and the personal computer 4 cannot receive, or when the PC priority mode is set and the personal computer 4 cannot receive and cannot record, The display 150 indicates that fact.

Paper output flag 284 and proxy flag 28
6 is not set in the PC ONLY mode or the PC priority mode when the personal computer 4 can receive facsimile data, and the facsimile data is transmitted to the personal computer 4 in parallel with the reception (S5).
24).

Next, step S515 is executed, a DIS signal to be output to the partner device 114 is created based on the DIS signal creation program shown in FIG. 36, and the DIS signal is output to the partner device 114 by interrupt processing.

As described above, the DIS signal is a signal for notifying the level of the transmission parameter of the facsimile apparatus 2 to the partner apparatus 114, and may differ depending on whether the facsimile apparatus 2 receives the facsimile data or the personal computer 4 receives the facsimile data. is there. Therefore, it is determined in S841 whether the paper output flag 284 is set. If the paper output flag 284 is set, the facsimile data is recorded by the recording device 29. That is, it means that the facsimile apparatus 2 receives the facsimile data. Therefore, the determination result of S841 is YES
S845 is executed, and among the transmission parameters of the facsimile machine 2, such as the resolution, paper width, and encoding method,
A DIS signal indicating the highest level is created, and S84
In step S4, the data is stored in the FAX-side transmission data buffer 256.

If the paper output flag 284 is not set, the determination result in S841 is NO, and in S842, it is determined whether the proxy flag 286 is set. Since the setting of the proxy flag 286 indicates that the facsimile data is stored in the facsimile-side reception data buffer 254, that is, the facsimile apparatus 2 receives the facsimile data, S845 is executed.

If neither the paper output flag 284 nor the proxy flag 286 is set, it means that the personal computer 4 receives facsimile data. Therefore, S
In step 843, a DIS signal that is common to the transmission parameter of the personal computer 4 and the transmission parameter of the facsimile apparatus 2 and informs the partner apparatus 114 of the highest level transmission parameter is created. Written. PC 4
Of the PC transmission parameter buffer 263
, And a DIS signal is created based on the transmission parameters and the transmission parameters of the facsimile apparatus 2. In S844, the FAX-side transmission data buffer 2
56.

[0302] Next, step S516 is executed, the P / S interrupt vector is set to the command reception, and the command transmitted from the partner apparatus 114 in the phase B such as the V21 flag can be received.

Then, S517 to S519 are executed, and
It is determined whether the V21 flag has been transmitted from the partner device 114 within the set time. The V21 flag is a command transmitted when data is transmitted between the facsimile apparatuses. Without this, it means not transmission of facsimile data but transmission of a telephone signal or some abnormality. Therefore, even if the set time has passed, V21
If no flag is obtained, the determination result in S519 becomes YES, and error processing is performed in S531. The (+ FHNG: 2) signal is output to the personal computer 4 to notify that the communication is terminated due to the occurrence of the error.
2, the paper output flag 284 and the proxy flag 286
Is reset and the line is released, and the communication ends.

[0304] If the V21 flag is transmitted within the set time, the determination result in S518 becomes YES, and phase B is performed in S520. The output of the DIS signal and the reception of the V21 flag are also phase B, and the remaining phase B is performed here. In this phase B, the partner device 11
4, the level of the transmission parameter is set by the DCS signal. These transmission parameters are stored in the transmission parameter buffer 290 when receiving image data.

After the execution of the phase B, it is determined in S521 whether an error has occurred. The error is D
The CS signal cannot be received, or the data cannot be received at the command transmission speed of 2400 bps, and the like.
Is YES, and the error processing of S531 and S53
532 line release, etc., and the determination result of S519 is Y
This is performed in the same manner as when ES is set.

If there is no error, the judgment result in S521 is N
O, the facsimile device 2 receives the facsimile data instead of the personal computer 4 in response to the setting and resetting of the paper output flag 284 and the substitute flag 286 (S526). (S525) and PC reception for causing the personal computer 4 to receive facsimile data (S524).
Is executed.

[0307] The PC reception will be described based on the program shown in FIG.

The storage of the encoded image data transmitted from the partner device 114 in the reception data buffer 254 on the facsimile side and the transmission to the personal computer 4 are both performed by interruption. Writing to the PC-side transmission data buffer 252, decoding of encoded image data, and checking of data transmission of one line are performed.

First, in S851, a P / S interrupt vector is set for data transmission. Next, S852 to S8
54 is S30 of the PC data recording program shown in FIG.
The process is performed in the same manner as in steps S8 to S310, and EOL data indicating the head of data of one page is searched.

If the EOL data is obtained, the determination result in S854 is YES, and the count value of the line counter 344 is increased by 1 in S855. When transmitting data from the facsimile apparatus 2 to the personal computer 4, the number of lines of data is also transmitted, so the number of lines is counted here. The number of lines also depends on the data resolution and paper width of the facsimile
Is also used when correcting to a displayable resolution and paper width.

In S856, the decoding buffer 270 is set.
After initialization of S8 is performed in the same manner as in S311 of FIG.
Step 57 is executed, and one byte of data is extracted from the FAX-side reception data buffer 254. In S857, the data is extracted by copying. Next, in S858, it is determined whether or not the PC transmission flag 288 is set. If the facsimile data can be transmitted to the personal computer 4 and the PC transmission flag 288 is set, the determination result in S860 is YES,
In S859 to S861, it is determined whether facsimile data transmission to the personal computer 4 is possible.

This determination is made based on whether the output of the CTS control signal line is in a state of permitting data transmission from the facsimile apparatus 2 to the personal computer 4 or in a state of preventing data transmission. If the facsimile data buffer of the personal computer 4 is already full of data and no more data can be stored, if the personal computer 4 is executing a program that cannot receive facsimile data, The CTS control signal line outputs data from the facsimile apparatus 2 to the personal computer 4 when the program for receiving the data is not executed, when the power of the personal computer 4 is turned off, and when the interface box 6 is not connected. It will be in a state to block. The output of the CTS control signal line is a facsimile data transmission permission signal in a state where facsimile data transmission is permitted, and is a facsimile data transmission inhibition signal in a state where facsimile data transmission is prohibited.

This state does not continue for the set time (3 seconds in the present embodiment), and information indicating that the output of the CTS control signal line allows data transmission within 3 seconds and facsimile data can be sent out within 3 seconds. If it is obtained, the determination result in S860 is YES, and in S863, the facsimile data of one byte is stored in the PC-side transmission data buffer 25.
2 is stored. This facsimile data is transmitted to the personal computer 4 by executing the FAX data reception image data transmission interrupt processing program shown in FIG.

Next, after the timer is reset in S864, the data fetched in S865 is decoded according to the decoded image processing program, and then in S866
It is determined whether or not decoding of one code has been completed. If one code is composed of two or more bytes, the determination result in S866 is NO, and S857 is executed to fetch the next data from the FAX-side reception data buffer 254.

If one code of data is taken out, S8
At 67, it is determined whether the extracted data is EOL data indicating the end of one line. This determination result is initially NO, and a determination is made in S868 as to whether it is data instructing the end of one page. This determination result is also NO, and the data extracted in S869 is image data. A determination is made whether there is. If it is image data, S870 is executed, and the bit number of the decoded image data is
After the number of bits of one line of image data is counted in addition to the count value of 46, the program is executed in S857.
Then, the next data is taken out and written into the PC-side transmission data buffer 252 and decoded.

If the extraction and transmission of one line of data is completed without data transmission to the personal computer 4 being impossible, the determination result in S867 becomes YES, and in S871, the data of one line is transmitted from the partner apparatus 114. It is determined whether or not is transmitted. This determination is based on the fact that the number of bits added in S870 is equal to the number of bits included in one line of the paper width set between the facsimile machine 2 and the partner apparatus 114 (for example, 172 if the paper width is A4).
8 bits, 2048 bits in the case of B4). If the facsimile data is disturbed due to disturbance or the like and the number of bits is larger or smaller than the set number of one line, the determination result in S871 is NO, and
At 872, the count value of the error line counter 348 is incremented by one.

Although not shown, the number of error lines counted by the error line counter 348 is processed as follows. After the reception of the encoded image data of one page, the error processing program in the phase D is executed,
If it is determined that the number of error lines is equal to or greater than a preset rate (for example, 10%), RTN (Re
train Negative) signal is output and the image data was not completely received, but if the training or synchronization signal is retransmitted, it indicates that the image data of the next page can be received. Also, the number of error lines is greater than the rate of determining whether to output the RTN signal (for example, 30
If the error occurs in excess of (percent), a DCN signal is output and the communication is terminated.

If the number of bits of transmitted data is one line, the decision result in S871 is YES, and the program returns to S855 to transmit and check the coded image data of the next line. .

The data indicating the end of one page includes six pieces of EOL data. When the first piece of EOL data is taken out, the judgment result in S867 becomes YES, and the result in S87 is YES.
1, S872 is executed. Since the second to fifth EOL data are neither data indicating the end of one line nor data indicating the end of one page, the determination results in S867 and S868 are both NO, and the data is not image data. The determination result in S869 is NO, and the execution of the program returns to S857. Since it is not image data, the addition of the number of bits is not performed. If six pieces of EOL data are extracted, the determination result of S868 becomes YES, and S87
At 3, it is determined whether the PC transmission flag 288 is set.

If the PC transmission flag 288 is set, it means that the entire data of one page has been transmitted to the personal computer 4, and the data stored in the FAX-side reception data buffer 254 may be deleted. If the determination result is YES, S880 is executed, and an instruction to delete one page of data stored in the FAX-side reception data buffer 254 is issued. As a result, the data for one page sent to the personal computer 4 is erased by a program (not shown).

Next, in step S875, the end processing of one page, that is, in step S852, the one-page data buffer 2
The data set in 77 is erased. S87
At 5, the P / S interrupt vector is set to command reception, and the count value of the line counter 344 is decreased by one. When the first piece of EOL data constituting the RTC PATTERN data is extracted, the count value of the error line counter 344 is incremented by 1 in S872. However, this does not represent the number of lines, so It is reduced by one.

The output of the CTS control signal line continues for more than 3 seconds to prevent data transmission.
If facsimile data cannot be sent to S
861 is YES, and in S862, P
The C transmission flag 288 is reset. As a result, no data is thereafter written to the PC-side transmission data buffer 252, and no facsimile data is sent to the personal computer 4. In step S862, the transmission parameters stored in the transmission parameter buffer 290 at the time of receiving image data are stored in the FAX-side reception data buffer 254, so that the transmission parameters of the received facsimile data can be identified. Further, one of the PC / ONLY mode period reception flag 296 and the PC priority mode period reception flag 296 is set, and the mode in which the substitute reception is performed is stored. At this time, all flags other than the flag indicating the output mode at the time of proxy reception are reset. As described above, while the facsimile data is being transmitted to the personal computer 4,
In the PC ONLY mode, the display 150 indicates that the PC is in the PC ONLY mode and transmission is not possible.

In the PC ONLY mode or the PC priority mode, if the personal computer 4 becomes unreceivable during the reception of facsimile data, the personal computer 4
Is not sent, but the data is decrypted,
It is determined whether one line of data has been transmitted without excess or deficiency.

If the decoding of the data of one page is completed, S868
Is YES. In this case, since the PC transmission flag 288 has been reset, the determination result in S873 is NO, and the end process of one page is performed in S875. If it is determined that data transmission to the personal computer 4 is not possible, facsimile data is later transmitted to the personal computer 4.
Since the data is transmitted in units of one page, it is necessary to keep the entire data for one page, and S874 is not performed. In the PC ONLY mode, the coded image data after the personal computer 4 becomes unreceivable is stored in the FAX-side reception data buffer 254. Also, even in the PC priority mode, the facsimile data received by proxy is transmitted to the personal computer 4 in units of one page.
Since data is recorded in page units, all data for one page is faxed.
It is left in the side reception data buffer 254. When the encoded image data is recorded, it is deleted every time one page is recorded.

Next, the alternate reception in S525 will be described.

The proxy reception is performed by the proxy flag 286.
Is set, and all the facsimile data is stored in the FAX-side reception data buffer 254.
Therefore, it is not necessary to determine whether data transmission to the personal computer 4 is possible. The proxy reception program shown in FIG. 38 is a step of setting the interrupt vector for data transmission in the PC reception program shown in FIG. Determining whether data transmission to the personal computer 4 is possible,
Erasing the data, the recording temporary buffer 260,
It is assumed that the storage of the data in the recording buffer 262 is excluded, and the description is omitted. In the case of proxy reception, a transmission parameter is added to the data stored in the FAX-side reception data buffer 254 at the time of one-page termination processing in S915, so that the transmission parameter of the proxy-received encoded image data can be known. Is done. In S915,
Paper output mode era line reception flag 292, PC ONLY
One of the mode erasure reception flag 294 and the PC priority mode erasure reception flag 296 is set, and the output mode in which the alternate reception is performed is stored.
Flags other than the flag for storing the output mode at the time of proxy reception are reset.

Next, the paper output in S526 will be described based on the paper output program shown in FIG. The paper output is performed when the paper output flag 284 is set.
All facsimile data is recorded by the recording device 29. Therefore, the paper output program shown in FIG. 39 decodes all the received data and stores it in the recording buffer 262. When the decoding of one page is completed, the photosensitive drum 30
Is started, and the recording device 29 records one page of data (S96).
7). Others are the same as the proxy reception program shown in FIG. 38, and the description is omitted.

If the encoded image data for one page has been processed as described above, the phase D is performed in S527 of the reception routine shown in FIG. Next, S528 is executed to determine whether there is an error, that is, whether the MPS signal, the EOM signal, or the EOP signal has been received from the partner device 114. Although not shown, this determination is made within the set time by the MPS signal, EOM signal or EO signal.
The determination is made based on whether or not the P signal is obtained. If the P signal is not obtained, the determination result in S528 is NO, and an error process is performed in S531. To PC 4 (+ FHNG: 2)
A signal is output.

If there is no error, the decision result in S528 is N
It becomes O, and it is determined in S529 whether or not the communication has been completed. If the signal from the partner device 114 is not the EOP signal indicating the end of data transmission, the determination result in S529 is NO.
, And it is determined in S530 whether or not the transmission parameter has been changed. This determination is made based on whether or not an EOM signal indicating a change in the transmission parameter has been transmitted from the partner apparatus 114. If the EOM signal has not been changed, the program returns to S522, and the same transmission parameter as used when the previous facsimile data was received. Receives the facsimile data of the next page. If there is a change, the program is executed in S51.
5, the transmission parameters are reset between the facsimile apparatus 2 and the partner apparatus 114, and the facsimile data is received. The transmission parameters are stored in the transmission parameter buffer 290 at the time of receiving image data for each page, regardless of whether or not there is a change.

If the EOP signal is received from the partner apparatus 114, the determination result in S529 is YES, and in S532, the proxy flag 286 and the paper output flag 284 are reset, the line is opened, and the execution of the program ends.

When the proxy flag 286 is set and F
The facsimile data stored in the reception data buffer 254 on the AX side and data transmission to the personal computer 4 at the beginning of the FAX reception were possible, but the transmission became impossible halfway.
The facsimile data stored in the AX-side reception data buffer 254 is recorded after reception of all data is completed,
Alternatively, it is sent to the personal computer 4. These recording and transmission will be described based on the proxy reception data processing program shown in FIG.

First, in S1001, it is determined whether or not there is data in the FAX-side reception data buffer 254. If there is no data, the determination result in S1001 is NO and the execution of the program ends. If there is proxy reception data, the determination result in S1001 becomes YES and S1002
Is executed, and it is determined whether or not the timer is set, that is, whether or not a ring command has been output to the personal computer 4 as described later. When S1002 is executed for the first time, the timer is not set and S1 is executed.
The determination result of 002 is NO, and S1003 is executed to determine whether or not the flag E is set. The flag E is reset in the initial setting,
The determination result in S1003 is NO, and S1004 is executed, and it is determined whether the proxy reception is performed in the paper output mode. This determination is made based on whether or not the paper output mode period reception flag 294 is set.

In the paper output mode, the judgment result in S1004 is YES. In the paper output mode, substitute reception data is present when recording is not possible.
At 5, it is determined whether or not recording is possible. If recording is not possible, the determination result in S1005 is NO, and the execution of the program ends. S1 until recording becomes possible
001 to S1005 are repeatedly executed, and if recording becomes possible, the determination result of S1005 becomes YES and S1006
Is executed, and the facsimile data is recorded on the recording paper 17. The paper output mode period row reception flag 294 is reset when the recording is completed.

If the mode is not the paper output mode, the determination result in S1004 is NO. After the timer is set in S1007, S1008 is executed, and a ring command is output to the personal computer 4. Next, in S1009, it is determined whether five seconds have elapsed since the output of the ring command. The determination result is NO, and in S1010, it is determined whether data can be transmitted to the personal computer 4. Will be This determination is made based on whether there is a response from the personal computer 4, that is, whether the ATA signal has been transmitted.

Until the ATA signal is obtained, or until 5 seconds elapse without obtaining the ATA signal, S1001, S10
02, S1009, and S1010 are repeatedly executed. 5
If the ATA signal is not obtained even after the lapse of seconds, S100
After the determination result of No. 9 is YES and the timer is reset in S1011, it is determined in S1012 whether the output mode when the alternate reception is performed is the PC ONLY mode. This judgment is PC ONLY
This is performed depending on which of the mode era reception flag 294 and the PC priority mode era reception flag 296 is set. If it is the PC priority mode, the determination result in S1012 is NO, and it is determined in S1013 whether or not recording is possible. If recording is possible, S1015 is executed and recording is performed. At this time, even when the personal computer 4 cannot receive the facsimile data from the beginning of the reception of the facsimile data and the facsimile data is received by the proxy reception program shown in FIG.
Even if the personal computer 4 becomes unable to receive the facsimile data and is alternately received while the facsimile data is being transmitted to the personal computer 4 by the PC reception program shown in FIG. 37, the data is transmitted to the recording buffer 262 of the decoded image data. Is not stored, and is decrypted at the time of recording in S1015.

If the recording is not possible, the decision result in S1013 is NO, the flag E is set in S1014, and the execution of the program ends. In addition, the display 150
Indicates that recording is not possible in the PC priority mode. Next, when S1003 is executed, the determination result is YES, and S1012 is executed. S1001 to S1003, S1012, S until recording becomes possible
Step 1013 is repeatedly executed.

As described above, in the PC priority mode, it is determined whether or not the personal computer 4 can receive the data only once after the substitute reception is completed. In this case, the PC priority mode erasure reception flag 296 and the flag E are reset when all the coded image data received by proxy is recorded.

In the PC ONLY mode, S101
After the determination result of 2 is YES and the flag E is reset in S1036, the execution of the program ends. Then, when the proxy reception data processing program is executed again, a ring command is output to the personal computer 4 by executing S1008. The ring command is output to the personal computer 4 at intervals of 5 seconds until the substitute reception data is transmitted to the personal computer 4. Since whether or not the power of the personal computer 4 is OFF and whether or not the memory capacity of the personal computer 4 is full are determined based on the output state of the same control signal line, the two cannot be distinguished. OF
Even in the case of F, the ring command continues to be output.

If the ATA signal is obtained within 5 seconds after outputting the ring command, the decision result in S1010 is YES
After the timer is reset in S1016, it is determined in S1017 whether the transmission parameter of the personal computer 4 matches the transmission parameter of the data stored in the FAX-side received data buffer 254.

If the personal computer 4 cannot receive the facsimile data during the reception, the transmission parameters for data reception are the same as the transmission parameters of the personal computer 4. Therefore, the determination result in S1017 is YES, and the execution of S1027 to S1033 causes the personal computer 4
Can be received, the FAX-side reception data buffer 25
The encoded image data stored in the PC 4
Sent to If the personal computer 4 becomes unable to receive data during transmission, the determination result in S1033 becomes YES,
After execution of S1034, the alternate reception data processing program is executed again, and a ring command is output to the personal computer 4. Whether or not data transmission to the personal computer 4 is possible in S1027 is in a state where the output of the CTS control signal line is in a state in which transmission of facsimile data from the facsimile apparatus 2 to the personal computer 4 is permitted or blocked. It is done by or.

If the transmission parameters of the personal computer 4 are different from the transmission parameters of the data stored in the FAX-side received data buffer 254, the determination result in S1017 is NO. If the interface box 6 is not connected, or if the personal computer 4 cannot receive the data from the beginning of the reception of facsimile data and the data is intercepted, the transmission parameters are set between the facsimile apparatus 2 and the destination apparatus 114. Since these are set, they may be different from the transmission parameters of the personal computer 4.

In this case, if it is determined in S1018 that data transmission to the personal computer 4 is possible, the process proceeds to S1018.
19 is executed, one line of data is extracted from the FAX-side reception data buffer 254, and data having a resolution, a paper width, an encoding method, and the like that can be processed by the personal computer 4 is created. 252 is transmitted to the personal computer 4. For example, the highest level of the transmission parameters between the partner apparatus 114 and the facsimile apparatus 2 is that the resolution is superfine, the encoding scheme is MMR, and the paper width is B4.
When the facsimile data is transmitted, data having a resolution of fine, an encoding method of the MH method, and a paper width of A4 is created and transmitted to the personal computer 4.

Note that the facsimile machine 2 and the partner device 11
4 is lower than the highest level of the transmission parameters of the personal computer 4,
4 is included in the level of the transmission parameter of the personal computer 4, the level of the transmission parameter is determined to be the same, and the determination result of S1017 is YES, and the received facsimile data is The data is sent to the personal computer 4 as it is. When the encoded image data is sent to the personal computer 4, after all the data has been sent, in S1035, the PC / ONLY mode period reception flag 294,
The PC priority mode period reception flag 296 is reset.

After the data has been written to the PC-side transmission data buffer 252 in S1020, it is determined in S1021 whether or not the data for one page has ended. This determination is made based on whether the <DLE> and <ETX> data have been written to the PC-side transmission data buffer 252. If the data of one page has not been completed, the determination result in S1021 is NO, and the program is executed. It returns to S1018.

If the data for one page has been completed, the determination result in S1021 is YES, and it is determined in S1022 whether or not the data has been completed, ie, whether or not all the data has been transmitted to the personal computer 4. Unless the data ends, S1
022 is NO, and the program is executed in S.
Returning to 1017, the transmission parameter of the next page is
It is determined whether or not the transmission parameter matches the transmission parameters described above. If they match, S1027 to S1033 are executed, and if they do not match, S1018 to S1021 are executed. And
If all data is transmitted, the result of determination in S1022 is YE
At S, the execution of the program ends.

It is determined whether data transmission to the personal computer 4 is possible during data transmission in steps S1018 and S1023.
This is performed in S1025, and if transmission is impossible, S10
The determination result at 25 is YES, the timer is reset in S1026, and then S1001 is executed again.

It should be noted that the display on the display 150 that the PC 4 cannot receive data in the PC ONLY mode and that the PC 4 cannot receive data in the PC priority mode allows the PC 4 to receive data in the former. In the latter case, they are erased when recording by the recording device 29 becomes possible.

If the output mode is changed after the facsimile data is stored in the facsimile-side reception data buffer 254 by proxy reception, the facsimile data received by proxy in accordance with the changed output mode is output. If the output mode is changed, the paper output mode era reception flag 292, the PC ONLY mode era reception flag 294, and the PC priority mode era reception flag 296
Are set and reset according to the changed mode,
The determination of the output mode in S1004 and S1012 is performed according to the changed output mode.

For example, if the mode is changed from the PC ONLY mode to the paper output mode, the determination result in S1004 is YES.
And facsimile data is recorded. Thus, for example, when the personal computer 4 breaks down and the facsimile data cannot be transmitted to the personal computer 4, the facsimile data can be recorded by the recording device 29.

If the mode is changed from the paper output mode to the PC ONLY mode, the determination result in S1004 is NO,
A determination result of 1012 becomes YES, and a ring command is issued until the personal computer 4 can receive facsimile data.

Further, the PC / ONL mode is switched from the PC priority mode.
If the mode is changed to the Y mode, the determination result of S1012 is YES
, And the ring command continues to be issued. In the PC priority mode, when the personal computer 4 cannot receive and cannot record at the time of outputting the first ring command, if the PC 4 is waiting for a state in which recording becomes possible,
If the mode is changed to the ONLY mode, the determination result in S1012 becomes YES, the flag E is reset in S1036, the determination result in S1003 becomes NO, and the ring command is output to the personal computer 4 again, and the facsimile data to the personal computer 4 is output. Can be transmitted.

Next, reading of an original and transmission of image data in the facsimile apparatus 2 will be described.

However, the procedure in the case where a document is read by facsimile apparatus 2 and image data is sent to partner apparatus 114 is well known and is not necessary for understanding the present invention. Therefore, the description is omitted, and only the case where the reading function is selected in the personal computer 4 as described above will be described.

If reading is instructed by the personal computer 4 when the facsimile apparatus 2 is in the idle state, the process proceeds to S2.
The determination at 050 is YES, and S2100 and subsequent steps are executed.

The sequence chart in this case is shown in FIG.
Shown in Since this procedure is almost the same as the above-mentioned reception, detailed description is omitted, and only different parts will be described.

In Phase B, LINE OPEN
Means that when reading is instructed in the personal computer 4, the external line 224 between the facsimile apparatus 2 and the partner apparatus 116 is opened.

In the phase C, while the facsimile machine 2 is reading the original 90 by the image reading device 42, the RTS control signal is
When the transmission of the C data is set to a state where the transmission of the C data is inhibited and the transmission is started, the RTS control signal is set to a state where the transmission of the PC data is permitted.

Further, if a device error such as a jam of the document 90 occurs during reading, an error command (+ BRNG: “DOCUMENT JA”) indicating that error occurs.
M ") is output to the personal computer 4, but if the cause of the error is eliminated, reading is resumed.

In this embodiment, reading and sending of a part of a series of originals are alternately performed. As described later, a page end is detected during the reading and sending of a series of originals, the remaining storage capacity of the PC-side transmission data buffer 252 becomes equal to or less than a set amount, and the continuous reading time exceeds the set time. When one of the three conditions is satisfied, the reading is interrupted and the transmission of the image data is started. When the transmission of the coded image data of the portion read up to that time (hereinafter referred to as “transmitted coded image data to distinguish it from the read image data”) to the personal computer 4 is completed, the image reading device 42 again performs the operation. Reading is started. Hereinafter, reading and sending are repeatedly executed in a time-sharing manner until sending of the image data corresponding to the entire series of originals to the personal computer 4 is completed.

If the reading is interrupted due to the continuous reading time of the image reading device 42 exceeding the set time, the encoding is performed in parallel with the transmission.

In S2100, the process in the phase B is performed, and in S2200, the image reading device 42 is initialized. Processing required to start reading the document 90, for example, feeding the document 90 to the reading position, is performed.

In this case, if there is no original 90 to be sent and the original 90 is not set on the original platen 94,
If the determination in step 2300 is NO, an error command (+ BRNG: “NO DOCUMENT”) indicating that the original has not been set is output to the personal computer 4 in step S2310. End processing of the reading device 42 and the like are performed. Error processing in S531,
The processing including the end processing of the image reading device 42 and the like is referred to as error processing in phase B.

If there is a document 90 to be sent, the determination in S2300 is YES, and in S2400 it is determined whether a communication error has occurred. If a communication error occurs and the determination result in S2400 is YES,
Error processing in phase B is performed.

In this embodiment, the presence / absence of the occurrence of a communication error, the set state of the cancel flag 274, the pressing of the stop key 164, and the like are detected only at predetermined steps. If the press of the stop key 164 is detected, the buzzer is activated in S2810, and in other cases, the error processing of S2320 is directly performed. When the occurrence of an error or the like is detected in the phases B, D, and E, the same processing as the above-described error processing in the phase B is performed. However, when the error or the like is detected in the phase C, it will be described later. Error processing in phase C is performed.

As described above, the communication error indicates that the cable between the facsimile machine 2 and the interface box 6 is detected when it is detected that the CTS control signal is in a state of preventing data transmission from the facsimile machine 2. Is determined to have occurred, for example, when disconnection is detected.

Pressing of the stop key 164 is detected based on a stop key pressing flag (not shown).
When the stop key 164 is depressed, a stop key depression flag is set by an operation panel control device (not shown) provided in the operation panel 12, and a signal indicating the state of the flag is supplied to the control device 40.

In S2500, an interrupt vector is set. At the address specified by the interrupt vector, the switching of the clock input / output terminal, which is the 47th terminal of the CPU 200, the setting of the frequency of the clock supplied to the serial / parallel conversion circuit 240, and the switching of the data transmission interrupt prohibition flag 244 And the like, and a transmission setting program for instructing the above are stored. The transmission setting program is executed when an interrupt signal is issued, and the interrupt signal is issued when any one of the above three conditions is satisfied.

Switching of the clock input / output terminals is performed by a multiplexer.
The switching from the MAC 208 to the serial / parallel conversion circuit 240 is performed. The transmission speed, that is, the transmission speed of the image data, is determined by the frequency of the clock supplied to the serial / parallel conversion circuit 240. Also, the data transmission interrupt prohibition flag 244 is switched from a state in which transmission is prohibited to a state in which transmission is permitted, thereby allowing execution of a FAX data reading image data transmission P / S interrupt processing program described later. Will be.

After the interrupt vector has been set, S2600
In steps 2800 to 2800, the presence or absence of a communication error is detected. However, if the occurrence of a communication error or the like is not detected and all of the determinations in these steps are NO, S
In 2900, a one-page reading / sending process in phase C is performed. Thereafter, it is determined whether the stop key 164 has been pressed in S3000 and whether a communication error or a device error has occurred in S3100.

If the occurrence of a communication error or the pressing of the stop key 164 is detected in phase C, in step S3111, termination processing of the image reading device 42 is performed in addition to the normal error processing. , RAM
Processing for terminating image reading, such as erasing data stored in the PC-side transmission data buffer 252 and the read image data buffer 258 of 202, is performed. The error processing including the reading end processing is referred to as error processing in phase C.

If the determination result in S3000 or 3100 is NO, the process in phase D is performed in S3200. The reading / sending of one page of the manuscript is terminated.

After the end of the processing in the phase D, S33
In 00 to S3500, it is detected whether or not a communication error has occurred. When the occurrence of a communication error or the like is not detected and the determinations in all the steps are NO,
In S3600, it is determined whether the original 90 to be read next is set on the original platen 94. If the next original 90 is set, the determination result is YES
And S2500 to S3600 are executed again. These operations are repeated until the document table sensor 98 detects that the next document 90 does not exist.

In S3300 to S3600, when the occurrence of a communication error or the like is detected, the same error processing as that in the phase B is performed.

If the document table sensor 98 detects that there is no document 90 to be read next, the process proceeds to step S360.
The determination result at 0 is NO, and S3700 through S3700
In 3900, the process of the phase E is performed, and the process for terminating the reading of the document 90 by the image reading device 42 is performed. In the present embodiment, completion of a series of originals is detected when the original 90 to be read is not set on the original platen 94.

Next, the reading / sending process in S2900 will be described with reference to the flowchart of the one-page reading / sending program in FIG.

In S2910, an initial setting for reading one page of the document 90 is performed. Specifically, the feed amount of the document feeder 96 in the image reading device 42 is set according to the resolution, or the read image data buffer 258 is initialized.

In this embodiment, the conditions for reading the resolution and the like in the image reading device 42 are set.
It is performed every time a document of one page is read. Therefore, it is possible to set reading conditions on a page-by-page basis. However, it is not always necessary to set the reading conditions for each page as described above, and may be set only at the start of reading a series of completed documents.
In that case, the processing in phase C may be performed after the processing in phase D ends.

At S2911, reading is started. The reading of the image reading device 42 is started, for example, when the driving of the document feeder 96 is started, and the port for inputting the binarized data is connected to the I / O port 210 for reading image data for reading image data input. Set to gate array for input. Also, about 10 μs of DMAC 208
A transfer request permission signal is issued for each transfer request signal.

As a result, the CCD output voltage becomes
8, binarized based on the threshold value provided by
The read image data as the binarized data is stored in the read image data storage buffer 258 in response to a command from the DMAC 208 through the above-described gate array of the I / O port 210.

In S2912, the time-up flag 298 is reset and the timer is started. In this embodiment, the timer is set to 60 seconds. When the reading function is selected and instructed on the personal computer 4, the timeout period is set longer than when other functions are selected. The above set time 6
0 second is a time shorter than 90 seconds which is a timeout time.

In S2913, encoding is performed based on the encoded image data processing program stored in the ROM 204. Since reading by the image reading device 42, binarization, and the like are performed in hardware, the reading image data is encoded in parallel with the execution.

If one of the above three conditions is satisfied while the reading and encoding by the image reading device 42 are performed in parallel, in S2914,
Reading by the image reading device 42 is interrupted. I /
The setting of the O port 210 is switched from the gate array for inputting the read image data to the port for transmitting image data, and the driving of the document feeder 96 is stopped. The reading is interrupted with the stop of the feeding of the original 90.

In the present embodiment, the reading by the image reading device 42 is interrupted when one of the above three conditions is satisfied. However, as soon as the condition is satisfied, that is, for switching to transmission. The read is interrupted before the interrupt signal is issued. In other words, after the reading is interrupted, the interrupt is enabled.

In S2915 and S2916, it is detected whether or not the stop key 164 has been pressed. If the stop key 164 has been pressed, the process returns to S3000 in FIG. 42 after interrupt processing is prohibited in S2918. In this case, the determination result in S3000 is also YE
At S, error processing in phase C is performed at S3111. When an apparatus error or the like is detected, the process is similarly returned to S3000, and the determination result of S3100 is Y
As an ES, an error command is issued in S3110 and S3111, and error processing in phase C is performed.

If the determination in S2915 or S2916 is NO, transmission is started in S2917 based on the interrupt signal. A clock is supplied to the serial / parallel conversion circuit 240, and the data transmission interrupt prohibition flag 244 is switched to a state in which data transmission is permitted. That is, when reading is instructed in the personal computer 4, the data transmission interrupt prohibition flag 244 is switched from a state in which data transmission is prohibited when an interrupt signal is issued to a state in which transmission is permitted.

As a result, the execution of the image data transmission P / S interrupt processing program at the time of FAX data reception in FIG. 29 is permitted, and the P / S data transmission buffer 246 is executed in S426.
Is supplied to the personal computer 4 and transmitted to the personal computer 4.

The <DLE> data used in S424 when the program of FIG. 29 is executed is stored in the PC-side transmission data buffer 252 in S2959 described later when a page end is detected. ing.

[0388] Until the transmission of the transmission-encoded image data to be transmitted is completed, it is detected whether or not the stop key 164 is pressed every transmission of one byte. As described above, when converting the transmission coded image data, which is 1-byte parallel data, to serial data, a clock is supplied to the parallel / serial conversion circuit 240 for 1 ms.

If it is detected that the stop key 164 has been pressed during transmission, the determination in S2919 becomes YES, the interrupt processing is prohibited, and error processing is performed as described above. During the transmission of the encoded image data, C
It is detected whether or not the TS control signal is in a state in which transmission from the facsimile apparatus 2 is blocked. If it is detected that the blocking state continues for a set time or longer, the same phase as described above is generated by interruption. Error processing in C is performed.

The determination as to whether or not all the transmission encoded image data to be transmitted has been transmitted is detected based on the address value in the PC side transmission data buffer 252 where the transmission encoded image data is stored first. When the pointer indicating the address of the PC-side transmission data buffer 252 first indicates the address value at which the transmission encoded image data is stored, the end of transmission is detected.

[0391] After the end of the transmission, in S2921, it is determined whether or not the page is the end. It is determined whether or not the cause of the interruption of the image reading device 42 is a page end. In the case of page end, the determination is YES,
In step S2922, end processing for reading the one-page document by the image reading apparatus 42 is performed, and the main routine proceeds to step S300.
Returned to 0. As a result, the reading / sending of one page of the document is completed.

If the reading is interrupted for another reason, the determination result in S2921 is NO, and the steps from S2911 are executed again to continue reading the original. The execution of steps S2911 to 2921 is repeated until a page end is detected.

Next, the encoding process in S2913 of FIG. 43 will be described with reference to the flowchart of FIG.

In S2950, it is determined whether or not one line of the read image data is stored in the read image data storage buffer 258. If the read image data for one line is stored, YES is determined, and S29 is performed.
In steps 51 and 2952, the read image data for one line is supplied to an encoding buffer 271 which is a one-line buffer, and transmission encoded image data is created based on a transmission encoded image data processing program. The data is stored in the transmission data buffer 252. Also, <EOL> data representing the end of one-line image data is stored.

On the other hand, if the read image data for one line is not stored, the encoding in S2951 and S2952 is not performed, and only the reading is performed.
However, since the reading speed is very fast, the image reading device 4
2 is not interrupted, the read image data for one line is stored in the read image data storage buffer 25.
8 is usually stored.

In S2953, it is determined whether or not all the transmission coded image data to be transmitted to the personal computer 4 has been transmitted. When this step is performed first, the determination is NO because the transmission has not been started, and
In S2954 through S2956, it is determined whether or not the page end, whether or not the stop key 164 has been pressed, and whether or not the remaining storage capacity of the PC-side transmission data buffer 252 is equal to or less than the set amount.

Strictly speaking, the remaining storage capacity of the PC side transmission data buffer 252 is determined by a dedicated buffer (PC
The remaining storage capacity of both the remaining storage capacity of the side transmission data buffer 252) and that of the shared buffer is shown. Hereinafter, unless otherwise noted, the storage buffer and the remaining storage capacity combining both of them are simply referred to as PC. -Side transmission data buffer 252 and PC-side transmission data buffer 2
It will be referred to as 52 remaining storage capacities. In the present embodiment, the set amount of the remaining storage capacity is one cluster (4 Kbytes).

When the page end is detected, all the information written on the one-page original 90 is read by the image reading device 42, binarized, and the binarized read image data is encoded. , PC side transmission data buffer 25
2 is stored. In this embodiment, the end of the original 90 is detected by the original sensor 99, and
When it is detected that the read image data is not stored in the read image data buffer 258, the page end is determined. That is, the page end is a state in which processing related to reading one page of a document, which is a kind of a series of document breaks, has been completed.

[0399] The stop key 164 is
Press to instruct the interruption of reading. for that reason,
If it is detected that the stop key 164 has been pressed, the reading is interrupted.

When the PC-side transmission data buffer 252 becomes full, no encoded transmission coded image data is stored thereafter. In order to avoid this, it is necessary to interrupt reading while the PC-side transmission data buffer 252 has a remaining storage capacity equal to or larger than the set amount.

When the size of the document 90 is a regular size such as A4 or B4, the PC-side transmission data buffer 252 does not normally become full even if one page of the document is read. However, when the size of the document 90 is long, the memory may be full.

Even if the original 90 is of a regular size, the PC-side transmission data buffer 252 becomes full when the halftone is set in the image reading device 42 or when the image of the original 90 is particularly fine. Could be. When the image is read in these halftones or when the image of the original 90 is fine, the dot data changes frequently. Therefore, even if the read image data is encoded, the number of data hardly decreases or conversely increases. Because

On the other hand, the above-mentioned shared buffer of the RAM 202 is used for storing data other than the transmission coded image data such as the received image data at the time of proxy reception or the like. In that case, as a result, the area of the shared buffer that can be used to store the transmission encoded image data is reduced, and even if the information read by the image reading device 42 is small, the PC side transmission data buffer 252 becomes full. Could be

When the steps of S2954 to S2956 are performed first, the determination is NO unless the stop key 164 is pressed, and it is determined in S2957 whether or not the time-up flag 298 is in the set state. It is determined whether or not the time is up. When the steps of S2957 and S2958 are executed first, the determination is NO, and the execution is returned to S2951. What is not returned to S2950 is the page end and the reading has not been interrupted.
This is because it is considered that one line of read image data is stored in 8.

[0405] Hereinafter, similarly from S2951 through S29
The execution of step 58 is repeated. If the determination in S2954, 2955 is YES, a page end process is performed in S2959. For example, the <DLE> data is stored in the PC-side transmission data buffer 252 together with the transmission encoded image data. Next, S2960
In, the timer is reset, and the flow returns to S2914. If the determination in S2956 is YES, the process returns to S2913 after the timer is reset in S2960.

In this embodiment, the stop key 164
Is detected in step S2959, the page end processing is performed. However, it is not essential that the page end processing be performed. However, even if the stop key 164 is pressed, if the image data read so far is sent to the personal computer 4, it indicates the end of the image data being sent <DLE
> It is desirable to store data in the PC-side transmission data buffer 252.

Even if the determination in S2954 to 2956 is NO, if the time is up in S2958, the timer is reset in S2961 and the reading is interrupted in S2962. Then, based on the interrupt signal, transmission is started as described above in S2963 and 2964, and a time-up flag is set.

Even if the page end or the like is not detected, the reading is interrupted when the time-up is detected.
If the continuous reading time exceeds the timeout time (90 seconds in this case), the line to the personal computer 4 is disconnected.

[0409] Thereafter, in S2950, it is determined whether or not the read image data is stored in the read image data buffer 258. If it is stored, the determination is YES and encoding is performed in S2951 and 2952. When the encoding is performed in parallel with the transmission, the reading by the image reading device 42 is interrupted.
It is determined whether or not the read image data is stored in 58. If not stored, the determination is NO and S2953 and subsequent steps are executed. The encoding will not take place in parallel with the transmission.

[0410] As described above, if the transmission is started, the CP
The clock is supplied to the parallel / serial conversion circuit 240 via the clock input terminal No. 47 of U200. Therefore, the CPU 200 is in a state where another program can be executed.

In S2953, it is determined whether or not all of the transmission coded image data to be transmitted has been transmitted. If there is transmission coded image data to be transmitted, and if the determination is NO, the same processing is performed in S2954 to S2956. A determination is made. If the determinations in S2954 to S2956 are all NO, the time-up flag 298 is set, so the determination in S2957 is YES and the process returns to the execution of S2950.

As described above, the transmission and the encoding are performed in parallel only when the reading is interrupted due to the time-out and the transmission is switched to the transmission.
When the page ends, the read image data is not stored in the read image data buffer 258.
This is because there is no need to perform encoding, and if encoding is performed with the remaining storage capacity of the PC-side transmission data buffer 252 being equal to or less than the set amount, the encoded read image data (transmitted encoded image data) May not be stored.

[0413] Until the transmission of the encoded image data to be transmitted is completed (while the scanned image data is stored in the scanned image data buffer 258), the transmission and the encoding are executed in parallel. If the transmission is completed, the determination in S2953 is Y
The state becomes ES, and in steps S2965 to S2967, the time-up plug 298 is reset, reading is started, and the timer is started. If the read image data is stored in the read image data buffer 258, the encoding is performed in S2951 and S2952 in parallel with the reading.

If the determination in S2958 is YES while reading and encoding are being performed in parallel, the time-up flag 298 is set, and the parallel processing of reading and encoding is performed. The parallel processing of transmission and encoding is performed in a time-division manner. On the other hand, if the determination of S2954 to S2956 becomes YES due to the page end or the like while reading and encoding are performed in parallel, the process returns to S2913 and transmission is started. The parallel processing of reading and encoding and the transmission are performed in a time-division manner.

As described above, according to the present embodiment, the personal computer 4 is connected to the image reading device 42 of the facsimile device 2.
The image of the original 90 can be input to the. for that reason,
There is an advantage that the PC 4 does not need a dedicated image reading device.

Also, in the facsimile apparatus which has a restriction that reading and sending cannot be performed in parallel because reading and sending are performed alternately in a time-division manner, that is, alternately, the PC side. Transmission data buffer 252
It is not necessary to increase the storage capacity of the device, and an increase in cost can be avoided.

Further, there is an advantage that even when there is a large amount of information of one unit of document, the user does not need to perform any troublesome work such as dividing the document.

If the image reading and the image data transmission are performed in a time-division manner, the time from the start of the transmission of the first image data to the end of the transmission of the last image data becomes longer, and the time required for the image data transmission is increased. Cable occupation time is extended.
Therefore, it is more advantageous to perform time-division reading and transmission between the facsimile apparatus 2 and the personal computer 4 connected by a dedicated cable than between facsimile apparatuses using a common line for transmission. .

However, even between facsimile machines,
Advantages such as a reduction in the storage capacity of the read image data buffer 258 and a reduction in the necessity of document division can be enjoyed, and it is significant to apply the present invention.

In the present embodiment, reading and sending are performed in a time-division manner, while encoding is performed in parallel with both reading and sending, so that only one of the coding is performed. Compared to when performed in parallel with
The time required for sending can be reduced. Since the encoding is performed by software by executing the encoded image data processing program, the required time is longer than that of reading and sending performed by hardware, and only one of them is executed in parallel. In such a case, extra time is required for reading and sending by the difference between the time required for one of the encoding and the encoding. However, if the reading and sending are performed in parallel, the extra time is required. You can save time.

In addition, in this embodiment, the reading is interrupted when the continuous reading time by the image reading device 42 exceeds the time-up time shorter than the time-out time. It is possible to avoid that the line with the personal computer 4 is opened by exceeding.

As is clear from the above description, in this embodiment, the I / O port 210 is connected to the facsimile
And the personal computer 4, and the partner device 114 constitutes another facsimile data transmitting device and another facsimile data receiving device.

The portion of the ROM 204 for storing the S201 to S232 of the PC data transmission program and the portion for executing those steps of the CPU 200 constitute a facsimile data transmission means or a computer data transmission means together with the modem 214 and the NCU 222, and transmit the facsimile number. The self-designated facsimile number buffer 264 constitutes facsimile number storage means, which is a type of self-designated data storage means.

[0424] S73- of the transmission program in the ROM 204
The part for storing S76 and the part for executing those steps of the CPU 200 record whether or not the facsimile number sent from the personal computer 4 matches the facsimile number of the facsimile apparatus 2 stored in the own facsimile number buffer 264. Alternatively, PC data recording of the ROM 204 constituting a facsimile number-dependent selecting means, a facsimile number / numerical-matching dependent selecting means, and a short facsimile-number-matching dependent selecting means, which are a kind of designated data consistency dependent selecting means for selecting unrecorded S3 of the program
01 to S324 and a part of the CPU 200 for executing those steps when the recording is selected by the designated data consistency dependent selection means.
9 constitutes a recording control means at the time of data transmission for recording.

[0425] Also, the facsimile machine 2
And a connection unit for connecting with the partner device 114, and the S204 to S85 of the PC reception program shown in FIG.
7, S863, S867, S868, and S875, and a portion of the CPU 200 that execute those steps constitute a computer reception control unit that causes the personal computer 4 to receive the facsimile data transmitted from the partner device 114. . The part of the ROM 204 that stores S502 of the receiving program shown in FIG.
4 constitutes reception data selection means for selectively causing a computer to receive a signal transmitted from the computer.

A portion for storing S703, S753, and S803 in the facsimile incoming call determination program shown in FIG. 32 of the ROM 204 and a portion for executing these steps of the CPU 200 determine whether the data transmitted from the outside is a facsimile data signal. A CNG signal dependence determination unit, which is one of transmission-related event dependence determination units, which is a type of signal determination unit that determines whether the signal is a signal, and stores S712 of the ROM 204 and a portion of the CPU 200 that executes the step. Constitutes a pseudo call termination dependence determining means which is one of transmission-related event dependence determining means which is a kind of signal determining means, and a portion of the ROM 204 for storing S605 and a portion of the CPU 200 for executing the step are the signal determining means. Facsimile, one of the transmission-related event dependency determination means A part for storing the S611 of the ROM 204 and a part for executing the step of the CPU 200 constitute a re-data signal reception instruction dependence determination means, and a set number of times call dependence is one of transmission-related event dependence determination means which is a kind of signal determination means. The ROM 204 constitutes a determination unit.
For storing S766 and S817 of the CPU 20
The part that executes these steps of 0 constitutes a silent state criterion determining means, which is one of the transmission-related event dependency determining means, which is a kind of signal determining means.

Further, the FAX-side reception data buffer 25
4 constitutes a facsimile data storage means,
4, a portion for storing the image data receiving modem interrupt processing program at the time of FAX data reception shown in FIG. 26, which stores S371 to S378, and a portion for executing those steps of the CPU 200 constitute a facsimile data storage means when computer reception is not possible; 29, a paper output flag 284, which is one type of recording execution instructing means, a portion for storing S526 of the receiving program shown in FIG. 31, and a portion for executing the step of the CPU 200 constitute a proxy receiving time recording device. S511 and S5 of ROM 204
25 and a portion for executing these steps of the CPU 200 constitute a facsimile data storage means when recording is not possible, and a portion for storing S901 to S915 of the proxy reception program shown in FIG.
And a portion for storing the steps S950 to S967 of the paper output program shown in FIG.

A portion of the ROM 204 for storing S507 and S508 of the reception program shown in FIG.
The parts storing the steps S002 and S863 of the PC reception program shown in FIG. The step executing step constitutes a facsimile data transmission reception possibility determination means or a computer reception possibility determination means.
S845 of the DIS signal creation program shown in FIG.
And the part of the CPU 200 that executes that step constitutes a facsimile highest level intercepting means.

A portion of the ROM 204 for storing the image data reception modem interrupt processing program at the time of FAX data reception and a portion of the CPU 200 for executing the program shown in FIG. 26 constitute a facsimile data receiving means during the reception feasibility determination.

The portion of the ROM 204 for storing S1008 of the proxy reception data processing program shown in FIG.
The part of the PU 200 that executes the step constitutes a reception prompting means for prompting the personal computer 4 to receive the facsimile data after the end of the substitute reception, and S1020, S1 of the ROM 204.
028, and a portion for executing these steps of the CPU 200 constitutes a facsimile data transmission means for transmitting facsimile data when the personal computer 4 can receive the facsimile data after the end of the proxy reception.
A part for storing S1013, S1015, S1005 and S1006 and a part for executing those steps of the CPU 200 constitute a recordable time recording control means for recording the facsimile data received by proxy when the recording device 29 becomes recordable. are doing.

Also, the portion of ROM 204 that stores S1019 of the proxy reception data processing program shown in FIG. 40 and the portion of CPU 200 that executes that step constitute data changing means, and the portion that stores S1016 of ROM 204 and that of CPU 200 The part that executes the steps constitutes the highest level data changing means.

Further, the FA shown in FIG.
A part for storing an image data receiving modem interrupt processing program at the time of X data reception and a part for executing the program of the CPU are used for transmitting facsimile data at the data transmission timing from the partner apparatus 114. The portion of the ROM 204 that stores S860 of the PC reception program shown in FIG. 37 and the portion that executes the step of the CPU 200 constitute the facsimile data storage means to be stored in the facsimile data storage means 254.
A part for storing S863 of the ROM 204 and the CPU 2
The portion that executes the step of 00 constitutes facsimile data transmitting means for transmitting facsimile data to the personal computer 4 when the personal computer 4 can receive the facsimile data.

When the portion of the ROM 204 for storing S862 of the PC reception program shown in FIG. 37 and the portion for executing the step of the CPU 200 are in a state where the personal computer 4 cannot receive facsimile data for a set time or more. And a data transmission stopping means for stopping transmission of facsimile data by the facsimile data transmitting means.

The portion of the ROM 204 for storing S1015 of the proxy reception data processing program shown in FIG.
The part of the PU 200 that executes those steps constitutes a data transmission suspension recording means together with the recording device 29.

A portion of the ROM 204 for storing S71 and S77 to S81 of the transmission program shown in FIG. 14 and a portion for executing these steps of the CPU 200 constitute a calling means for making a call to the other party based on an instruction from the personal computer 4. PC / TEL shown in FIG.
The portion of the program that stores S357 and S359 and the portion of CPU 200 that executes that step constitute the call status facsimile data transmission means, and the portion of ROM 204 that stores S356 and the portion of CPU 200 that execute that step are call status facsimile data. The portion that stores S360 and S361 of the ROM 204 and the portion that executes those steps of the CPU 200 constitute the receiving means, and constitutes the facsimile data transmission instruction rejection means during a call, and stores S82 of the transmission program shown in FIG. The part and the part of CPU 200 that execute that step constitute a call permission / inhibition determination means.
The part of M204 that stores S84 and the part of CPU 200 that executes those steps constitute a call refusal notification unit.

The read image data buffer 2 of the RAM 202
58 constitutes a read image data storage means, and the PC side transmission data buffer 252 constitutes a transmission image data storage means including a transmission encoded image data storage means. In addition, S2 of the flowchart shown in FIG.
951, 2952 and the like constitute an encoding means, and the serial / parallel conversion circuit 240, the CPU 200
Constitute transmission means including transmission encoded image data transmission means. Further, S2914, 29 of the control device 40
17, 2954 to 2958, etc., constitute the reading and sending control means, and the portions, etc., which execute S2963, S2950 to 2952, etc., constitute the sending encoding parallel processing instruction means.

In the above embodiment, the personal computer 4 is
When the C data is transmitted to the facsimile apparatus 2, the transmission destination is specified by the facsimile number. However, the transmission destination is not limited to the facsimile number, but the abbreviated number, the identification number,
You can specify the destination, such as the address, abbreviation, and common name of the destination,
What is necessary is just to specify by the data corresponding to a facsimile number and one-to-one. In this case, the self-designated data storage means for storing data specifying the facsimile apparatus stores data specifying the facsimile apparatus 2 with the same type of specified data as the data specifying the transmission destination. If the data to be specified is the data to specify the facsimile machine 2, the facsimile machine 2 records the facsimile data. Further, a transmission destination-facsimile number correspondence storage unit for associating transmission destination designation data and a facsimile number with the facsimile apparatus, and a facsimile number corresponding to the specified transmission destination when the transmission destination is not designated. Facsimile number transmitting means for searching from the other party and facsimile number correspondence storing means and transmitting to the external line.

In the above embodiment, when a call transmission command instructing data transmission is transmitted from the personal computer 4 during a telephone call, the transmission is rejected. PC 4 to refuse
An error command may be output to the facsimile machine 2 and a lamp provided on the operation panel 12 of the facsimile apparatus 2 may be turned on or blinked to notify the caller that there is data to be transmitted. The transmitting PC data display means is provided.

In the above embodiment, even if the interface box 6 is not connected, the output mode setting menu is displayed on the display 150 by operating the function key 174. When the box 6 is not connected, the output mode setting instruction may not be displayed on the display 150. When the interface box 6 is not connected, the facsimile data is recorded by the recording device 29 irrespective of the type of output mode, so that setting the output mode is unnecessary. For this reason, for example, when the function key 174 is pressed in the facsimile apparatus 2, an interface box connection determining means for determining whether or not the interface box 6 is connected is provided. What is necessary is just to make it not be displayed on 150.

In this way, the types of functions set by the user are reduced, and an effect of facilitating the function setting operation can be obtained.

Even if the output mode is set to the PC ONLY mode, facsimile data is not transmitted to the personal computer 4 and the facsimile data is stored in the facsimile reception data buffer 254 until the facsimile data is fully received. Can be avoided.

Further, even if the interface box 6 is not connected, the output mode set in the facsimile machine 2 at the time of connection is left as it is, so that when the interface box 6 is connected again, the user selects Facsimile data is output in mode.

In the above embodiment, the power of the personal computer 4 is turned off together with whether or not the capacity of the facsimile data storage buffer 328 of the personal computer 4 is full.
Although indicated by the output state of the TS control line, a personal computer power off display means for independently displaying the power off of the personal computer 4 may be provided. In this way, for example, when the power is off, the interface
As in the case where the box 6 is not connected, regardless of the setting of the output mode, even if the facsimile apparatus 2 records the facsimile data received by the facsimile apparatus 2 or operates the function key 174, the output mode is not changed. When the facsimile data is transmitted to the personal computer 4 after the proxy reception is completed, or when the facsimile data is transmitted, the ring command may not be output if the power is turned off.

Also, in the above embodiment, while the facsimile apparatus 2 is transmitting facsimile data received from the partner apparatus 114 to the personal computer 4, the personal computer 4 cannot receive facsimile data based on the output state of the CTS control line. It was decided whether or not there was,
Further, if the disconnection of the cable connecting the interface box 6 is detected, the cause of the inability of the personal computer 4 to receive the facsimile data is the interface box 6.
Is not connected.

Furthermore, in the above embodiment, when the personal computer 4 determines whether or not facsimile data cannot be received, the transmission of the ATA signal and the output of the CTS control signal line are permitted from the state in which the data transmission is prevented. Although the waiting state has been waited for three seconds, the waiting state may be longer than three seconds.

In the above embodiment, the personal computer 4
The program for receiving the facsimile data is executed when the facsimile data reception function is selected. However, when the power is turned on, the personal computer 4 starts executing the facsimile data reception program. The present invention can be applied to a connected facsimile machine.

Further, when the transmission parameter level of the other facsimile data transmitting apparatus is lower than that of the facsimile apparatus or the computer and the facsimile data is transmitted at a lower transmission parameter level of the other facsimile data transmitting apparatus, the alternately received facsimile data is transmitted. The data may be changed by the data changing means in the facsimile apparatus to a transmission level of a computer higher than that of another facsimile data transmission apparatus. With this configuration, facsimile data with high image reproducibility can be transmitted from the facsimile apparatus to the computer in a short time. In the above-described embodiment, the four items, namely, the page end, the remaining storage capacity of the PC-side transmission data buffer 252 being equal to or less than the set amount, the time being up, and the stop key 164 being pressed are described. The reading is interrupted when any one of the conditions is satisfied. However, the reading is interrupted when any two of the four conditions are satisfied.
It may be issued when all three conditions are satisfied. When the stop key 164 is pressed, the reading can be interrupted by another process.

Further, in the above embodiment, the condition for interrupting the reading and switching to the transmission includes that the remaining storage capacity of the PC-side transmission data buffer 252 is equal to or less than the set amount. May have the remaining storage capacity of less than or equal to the set amount. If the time required for encoding is longer than the time required for reading such as binarization, the read image data stored in the read image data buffer 252 increases as the information amount of the document read by the image reading device 42 increases. Become
Remaining storage capacity is reduced. Therefore, it is effective to interrupt reading when the remaining storage capacity of the read image data buffer 258 becomes equal to or less than the set amount. Further, when the remaining storage capacity of the read image data buffer 258 becomes equal to or less than the set amount, the reading may be interrupted, and the transmission and the encoding may be performed in parallel.

[0449] Also, the original 9 is detected by the original end sensor 99.
The detection of the end of 0 may be one of the conditions for interrupting the reading. Reading of the document 90 by the image reading device 42 is also a process related to reading.
Further, when the end of the document 90 is detected, the reading can be interrupted so that the encoding and the transmission are performed in parallel.

Also, in the above embodiment, the read image data is encoded to be output image data, and then transmitted after being subjected to parallel / serial conversion. However, it is not always necessary to encode the read image data. Not essential. The read image data may be converted into parallel / serial data and transmitted without encoding the read image data. In that case, the read image data and the transmission image data are the same, and the read image data buffer 252 and the PC transmission data buffer 258 are the same. If the present invention is applied to this facsimile apparatus, it is not necessary to increase the storage capacity of these storage means, and the cost can be reduced accordingly.

It is not essential that the image data transmitted from the facsimile apparatus 2 to the personal computer 4 be encoded, not only when reading the image based on the instruction from the personal computer 4 but also based on the instruction from the personal computer 4. When sending data to another device (including facsimile device 2)
The same applies to the case where the facsimile apparatus 2 causes the personal computer 4 to receive facsimile data transmitted from another apparatus.

The present invention can also be applied to a facsimile apparatus that receives and transmits uncoded facsimile data.

Further, not only a facsimile apparatus in which reading and encoding and transmission are performed alternatively, but also reading,
The present invention is also applicable to a facsimile apparatus in which encoding and transmission can be performed in parallel.

In a facsimile apparatus in which reading, encoding, and transmission can be performed in parallel, reading, encoding, and transmission are performed in a time-division manner, and transmission and encoding are performed in parallel. Accordingly, even if the time required for encoding is longer than the time required for reading, the amount of read image data stored in the read image data buffer 258 is prevented from increasing with the elapse of the reading time. It is not necessary to increase the storage capacity of the buffer 258, so that an increase in cost can be avoided. Further, in the above-described embodiment, the personal computer 4 sets the size of one liquid crystal constituting the display 116 to be the same as the size of the reading area when the resolution of the facsimile apparatus 2 is superfine. The present invention can also be applied to a facsimile apparatus used by being connected to a computer having a different vertical / horizontal ratio of each of the read areas of a plurality of types of resolutions of the facsimile apparatus 2. In this case, in order to convert the facsimile data into data that can be displayed on a computer display, for example, a data processing unit is provided, and the number of dot data is increased or decreased in the scanning direction, and the number of data lines is reduced in the sub-scanning direction. Increase or decrease. This data processing means may be provided in at least one of the facsimile machine and the computer,
When the number of lines and the number of dot data decrease, a data processing unit is provided in the device on the data transmission side, and when the number increases, providing a data processing unit in the transmission on the data reception side is necessary to shorten the transmission time. desirable.

[0455] In the above description, the facsimile apparatus 114 is a facsimile apparatus having a recording apparatus and an image reading apparatus. However, it has a function of receiving and transmitting facsimile data, but does not have a recording apparatus or an image reading apparatus. No facsimile modem can be the partner device.

[0456] The destination of transmission of facsimile data to facsimile apparatus 2 is not limited to a facsimile apparatus, but may be a facsimile data transmission apparatus having at least a facsimile data transmission function.

It is not indispensable to store the output mode at the time of proxy reception by setting the paper output mode period reception flag 292, the PC ONLY mode period reception flag 294, and the PC priority mode period reception flag 296. When processing the received data, as described above, the processing may be performed in accordance with the output mode set and stored by operating the function key 174 or the like.

Although not specifically exemplified, the present invention can be embodied with various modifications and improvements based on the knowledge of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a facsimile apparatus as an embodiment common to the present invention, a personal computer connected to the facsimile apparatus, and an interface box for connecting them.

FIG. 2 is a front sectional view showing the facsimile apparatus.

FIG. 3 is a plan view showing an operation panel of the facsimile apparatus.

FIG. 4 is a block diagram showing a configuration of a control device of the facsimile machine.

FIG. 5 is a diagram illustrating an RA of a computer which is a main body of the control device.
FIG. 3 is a diagram conceptually showing a configuration of M.

FIG. 6 is a plan view showing a keyboard of the personal computer.

FIG. 7 is a block diagram showing a configuration of a control device of the personal computer.

FIG. 8 is a block diagram showing a configuration of a RAM of the personal computer.

FIG. 9 is a flowchart showing an idle command reception P / S interrupt processing program stored in a ROM of the facsimile apparatus.

FIG. 10 is a flowchart showing an idle command output P / S interrupt processing program stored in a ROM of the facsimile apparatus.

FIG. 11 is a sequence chart for explaining transmission and reception of image data and a command when the data of the personal computer is transmitted from the facsimile apparatus to another facsimile apparatus.

FIG. 12 is a flowchart showing a PC data transmission instruction program stored in a ROM of the personal computer.

FIG. 13 is a flowchart showing a PC data transmission program stored in a ROM of the personal computer.

FIG. 14 is a flowchart showing a transmission program stored in a ROM of the facsimile apparatus.

FIG. 15 is a flowchart showing an image data reception P / S interruption processing program at the time of data transmission stored in the ROM of the facsimile apparatus.

FIG. 16 is a flowchart showing a data transmission command reception P / S interruption processing program stored in a ROM of the facsimile apparatus.

FIG. 17 is a flowchart showing an image data transmission modem interruption processing program at the time of data transmission stored in the ROM of the facsimile apparatus.

FIG. 18 is a flowchart showing a data transmission command output modem interrupt processing program stored in the ROM of the facsimile apparatus.

FIG. 19 is a flowchart showing a data transmission command reception modem interrupt processing program stored in the ROM of the facsimile apparatus.

FIG. 20 is a flowchart showing a PC data transmission program stored in a ROM of the facsimile apparatus.

FIG. 21 is a sequence chart illustrating transmission and reception of image data and commands when the image data of the personal computer is recorded by the facsimile apparatus.

FIG. 22 is a flowchart showing a recording image data reception P / S interruption processing program stored in a ROM of the facsimile apparatus.

FIG. 23 is a flowchart showing a PC data recording program stored in a ROM of the facsimile apparatus.

FIG. 24 is a flowchart showing a PC / TEL program stored in a ROM of the facsimile apparatus.

FIG. 25 is a diagram showing image data when facsimile data received by the facsimile apparatus is received by the personal computer.
5 is a sequence chart illustrating transmission and reception of a command.

FIG. 26 is a flowchart showing an image data reception modem interrupt processing program at the time of FAX data reception stored in the ROM of the facsimile apparatus.

FIG. 27 is a flowchart showing a FAX data reception command reception modem interrupt processing program stored in the ROM of the facsimile apparatus.

FIG. 28 is a flowchart showing a command output modem interruption processing program at the time of FAX data reception stored in the ROM of the facsimile apparatus.

FIG. 29 is a flowchart showing a P / S interruption processing program for image data transmission at the time of facsimile data stored in the ROM of the facsimile apparatus.

FIG. 30 is a flowchart showing a data reception P / S interruption processing program at the time of FAX data reception stored in the ROM of the facsimile apparatus.

FIG. 31 is a flowchart showing a receiving program stored in a ROM of the facsimile apparatus.

FIG. 32 is a flowchart showing a facsimile incoming call determination program stored in a ROM of the facsimile apparatus.

FIG. 33 is a flowchart showing a FAX reception determination program in F / T mode stored in the ROM of the facsimile apparatus.

FIG. 34 is a flowchart showing a TAD mode FAX incoming call determination program stored in the ROM of the facsimile apparatus.

FIG. 35 is a flowchart showing a facsimile incoming call determination program in the MC mode stored in the ROM of the facsimile apparatus.

FIG. 36 is a flowchart showing a DIS signal creation program stored in a ROM of the facsimile apparatus.

FIG. 37 is a flowchart showing a PC reception program stored in a ROM of the facsimile apparatus.

FIG. 38 is a flowchart showing a proxy reception program stored in a ROM of the facsimile apparatus.

FIG. 39 is a flowchart showing a paper output program stored in a ROM of the facsimile apparatus.

FIG. 40 is a flowchart showing an alternate reception data processing program stored in a ROM of the facsimile apparatus.

FIG. 41 is a sequence chart in a case where reading and sending are performed between the facsimile machine and a personal computer.

FIG. 42 is a flowchart showing a reading / sending program stored in a ROM of the facsimile apparatus.

FIG. 43 is a flowchart showing a part of a reading / sending program stored in a ROM of the facsimile apparatus.

FIG. 44 is a flowchart showing a part of a reading / sending program stored in a ROM of the facsimile apparatus.

[Explanation of symbols]

 2 Facsimile device 4 Personal computer 11 Receiver 20 Recording paper sensor 29 Recording device 40 Control device 42 Image reading device 80 Toner remaining amount detection device 94 Document table 98 Document sensor 99 Document end sensor 114 Other facsimile device (other device) 200 CPU 208 DMAC 210 I / O port 214 Modem 222 NCU 228 Binarization circuit 234 Modulation / demodulation mechanism 236 Audio reproduction mechanism 240 Parallel / serial conversion circuit 252 PC side transmission data buffer 254 FAX side reception data buffer 258 Read image data buffer 306 Control device

Claims (1)

[Claims] 1. A facsimile apparatus having a connection part to another facsimile data transmission apparatus and a connection part to a computer, wherein facsimile data reception determination is performed to determine whether the computer can receive facsimile data. Means, a mode for storing facsimile data in the storage means, and a computer priority reception mode for recording facsimile data on a recording sheet when the computer is determined to be unreceivable by the facsimile data reception availability determination means. A facsimile apparatus comprising: selecting means for selecting.