JPH07321991A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To enable the facsimile equipment to receive facsimile data and improve the transmission level by revising the facsimile data received by a delayed delivery means on behalf of the facsimile equipment to data with a level processable by the computer. CONSTITUTION:The facsimile equipment is provided with a delayed delivery means receiving facsimile data sent from other facsimile data transmitter on behalf of its own computer 4 and with a data revision means revising the facsimile data received by the delayed delivery means into data with a level processed by the computer 4. When the computer 4 cannot receive facsimile data due to a certain reason, the delayed delivery means of the facsimile equipment 2 receives the facsimile data on behalf of the computer 4. Thus, the facsimile data are received at a level depending on other facsimile data transmitter independently of a data processing level of the computer 4 and data with high reproducibility of an image are quickly obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine connected to a computer for use, and more particularly to reception of facsimile data by a computer.

[0002]

2. Description of the Related Art This type of facsimile apparatus causes a computer to receive a connection section with another facsimile data transmission apparatus, a connection section with a computer, and facsimile data transmitted from another facsimile data transmission apparatus. Computer reception control means. JP-A-60
The facsimile machine described in Japanese Patent Laid-Open No. 48661 is an example thereof. The facsimile data transmission device may be any device that has a function of transmitting facsimile data, for example, only a facsimile data transmission function,
It may be a device that transmits data supplied from a data processing device such as a computer, or may be a device that has an image reading device, creates facsimile data based on the image data obtained by reading, and sends the facsimile data. An apparatus having a receiving function in addition to the transmitting function and a recording function for recording facsimile data on a recording sheet may be used.
According to this type of facsimile apparatus, by causing the computer to receive the facsimile data transmitted from another facsimile data transmitting apparatus, the storage means of the computer can be used for storing the facsimile data, or the computer can be used. It can be used to edit and correct facsimile data.

[0003]

However, the computer may not be able to receive the facsimile data transmitted from the other facsimile data transmitting apparatus to the facsimile apparatus. For example, when the computer is not connected to the facsimile device, when the power of the computer is turned off, or when the facsimile data storage means for storing the facsimile data of the computer already stores the facsimile data and there is no remaining storage capacity. , If the computer is executing a large program that takes a long time and is a program other than the facsimile data reception, or if the computer does not execute the program for receiving the facsimile data, the facsimile data is received. You can't. The first and second aspects of the present invention provide a facsimile device that can receive facsimile data from another facsimile data transmission device even if the computer cannot receive the facsimile data, and that has a high transmission level. It was done as an issue.

[0004]

According to a first aspect of the present invention, there is provided a facsimile machine including a connection section with the other facsimile data transmission apparatus, a connection section with a computer, and a computer reception control means. ) Delegate receiving means for receiving the facsimile data transmitted from another facsimile data transmitting device on behalf of the computer, and (b) Data of a level at which the computer can process the facsimile data received by the alternate receiving means. The problem is solved by providing a data changing means for changing to.

Further, the second invention is solved by further including the highest level data changing means for changing the data changing means into the highest level data which can be processed by the computer.

[0006]

In the facsimile machine according to the first invention,
If the computer cannot receive the facsimile data for some reason, the proxy receiving means of the facsimile machine receives the facsimile data on behalf of the computer.

Whether or not the computer cannot receive the facsimile data is determined based on the reception-related information of the computer. If the computer cannot receive the facsimile data, the proxy receiving means receives the facsimile data. The facsimile data includes image data and transmission related data. The transmission-related data is data that is output in order to exchange data necessary for transmitting the image data, prior to the transmission of the image data, or between the transmission of the image data and at the end of the transmission of the image data. The CI signal represents a call from the facsimile data transmission device, the CNG signal represents transmission of facsimile data, and the like. Whether or not the computer cannot receive the facsimile data is determined, for example, when the image data has not yet been transmitted and the transmission related data has been transmitted when the reception of the facsimile data is started or when the image data is not transmitted. It is done during reception.

The simplest example of the reception-related information of the computer is a facsimile data unreception signal indicating that the facsimile data output from the computer cannot be received or facsimile data indicating that the transmission of the facsimile data is prohibited. This is a transmission prohibition signal.
However, if the computer outputs a facsimile data receivable signal indicating that the facsimile data can be received or a facsimile data transmission permission signal indicating that the transmission of the facsimile data is permitted, these are also included in the facsimile data. It can be regarded as information indicating that reception is impossible. This is because it can be considered that the fact that the facsimile data receivable signal or the facsimile data transmission permission signal is not output usually indicates that the facsimile data cannot be received. In this sense, the facsimile data unreceivable signal or the facsimile data transmission prohibition signal and the facsimile data receivable signal or the facsimile data transmission permission signal are substantially the same. These signals are, for example, high voltage (Hig
h), Low, or bit data supplied to a data line shared with other data. In the latter case, single-bit data or multi-bit data may be used.

The reason why the computer cannot receive the facsimile data includes, for example, that the computer is not connected to the facsimile apparatus, that the power of the computer is off, and that the computer stores the program for receiving the facsimile data. Not executed, the facsimile data receiving program is stored, but the computer is not instructed to execute the program, the facsimile data storage means of the computer cannot store the facsimile data further, and the computer is a facsimile machine. A program other than data reception may be running. Of these, in the case of, it can be expected that the computer itself outputs the reception related information, but in the cases of and, it cannot be expected. However, the fact that one of the signals representing each situation of ~ is obtained means that the situation of and does not exist, and the signal representing the situation of ~ also serves as the signal representing that there is no situation of and. Can be considered to be.

Further, the facsimile apparatus also confirms the existence or non-existence of the situations such as .about. From the output of the signal representing the existence of these situations or the output of the signal representing the absence thereof, or from the non-output of the signals. It is also possible.
For example, the situation "the computer is not connected to the facsimile machine" can be confirmed by the facsimile machine not only by the signal indicating that the computer is not connected but also by the signal indicating that the computer is connected. This is because the negation of one is the affirmation of the other. Further, the facsimile apparatus can confirm that the computer is not connected, because the signal indicating that the computer is connected is not output.
The reverse is also true.

As described above, there are a plurality of types of unreceivable situations (or causes of unreceivability), the presence or absence of all situations is confirmed on the computer side, and if there is at least one cause of unreceivability, the computer When the facsimile data unacceptable 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 above-mentioned facsimile data receivable signal or facsimile data transmission permission signal is output from the computer, the signal is not output, so the facsimile machine knows that the computer cannot receive the facsimile data. You can In the embodiment described below, it is determined that the computer is in a state in which the facsimile data cannot be received based on the fact that there is no response command to the command output from the facsimile apparatus to the computer, for example, the command notifying the transmission of the facsimile data. Is an example.

In a facsimile machine, based on a plurality of signals supplied from a computer or information acquired by the facsimile machine itself (for example, information on whether or not the computer is connected can be acquired by the facsimile machine itself). It is also possible for the situation related to the reception of the computer to be determined.
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 computer cannot receive the facsimile in the facsimile apparatus allows the computer to receive the facsimile data even when at least one piece of information indicating that the computer cannot receive the facsimile data is obtained. It can also be performed by not obtaining at least one piece of information indicating that. It is also possible to confirm that the computer can receive the facsimile data, and if it cannot be confirmed, determine that the facsimile data cannot be received.

Among the situations related to computer reception, as described above and (especially), the situation changes with the operation of the computer, and the frequency of change is high. As described above, there are situations in which the change does not occur with the operation of the computer but changes due to the operation of the operator and the change frequency is low.
In the computer reception related information corresponding to these situations,
There is 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 corresponds to both high change frequency situation and low change frequency situation) If so, it is considered as high change frequency information). Therefore, the means for determining whether or not the facsimile data can be received by the computer based on these pieces of information, the prompt decision type determination means for immediately determining the reception related situation of the computer, and the determination over time,
That is, it is desirable to provide a deferment type determination means that waits for a set time even if the computer cannot receive the facsimile data at a certain time point and determines whether or not the facsimile data can be received during that time.

When the facsimile apparatus receives the facsimile data transmitted from another facsimile data transmitting apparatus, the facsimile apparatus transmits the resolution, the paper width, the encoding method, the transmission speed, etc. to the facsimile data transmitting apparatus. Set the parameter level. As described in the embodiment section, there are plural kinds of transmission parameters. For example, there are multiple types of resolution, from the finest superfine to the coarsest standard, and the paper width is A4.
There are size, B4 size, etc., and the encoding method is MMR.
(Modified MR) method, MR (Modified READ (Relative E
lement Address Designate)), MH (Modified Huf
fman) system, etc., and the transmission speed is 2400 bps (bi
t per second), 4800 bps, etc.

When transmitting facsimile data between the facsimile device and another facsimile data transmitting device, the level of the transmission parameter is set to the highest level common to the two devices. What is the highest level?
The resolution is the finest resolution, the paper width is the largest width, the encoding method is the method that requires the least amount of data (the MMR method of the above three methods), and the transmission speed is the highest speed. is there.
The higher the resolution and the width of the paper, the higher the reproducibility of the image, and the higher the level of the encoding method and the transmission speed, the shorter the time the facsimile data can be transmitted. However, the paper width is as follows when the paper width of the facsimile data is narrower than the maximum paper width of the facsimile machine.
It is set to the paper width of the transmitted facsimile data.

The computer also has transmission parameters for receiving the facsimile data from the facsimile apparatus. When the computer receives the facsimile data, the level of the transmission parameter is common between the computer and the facsimile apparatus. And it is necessary to set it to the highest level. Then, the transmission level set between the facsimile apparatus and another facsimile data transmitting apparatus may be different from the transmission level set between the facsimile apparatus and the computer.
For example, if the level of the transmission parameters of the facsimile device and the other facsimile data transmitting device is higher than that of the computer, receiving the facsimile data at the computer level wastes the high transmission level of the facsimile device. Therefore, between the facsimile machine and another facsimile data transmitter,
The transmission parameter level is set to the highest level common to these devices, and the facsimile data with high image reproducibility is obtained in a short time. Since the data cannot be processed, the data changing means changes the data to a level that can be processed by the computer. When the level of the transmission parameter of the other facsimile data transmitter is lower than that of the facsimile machine or the computer, and the facsimile data is transmitted at the level of the transmission parameter of the other facsimile data transmitter, the facsimile data received on behalf of The changing means may change the transmission level of the computer higher than the transmission level of the other facsimile data transmitting apparatus. The data changing means may change the facsimile data into level data that can be processed by the computer, and may change the data to a lower level than the maximum level that can be processed by the computer, if necessary.

In the facsimile machine according to the second invention, the facsimile data is changed to the highest level data that can be processed by the computer. When a computer has only one type of transmission parameter, that one type of level is the highest level that can be processed by the computer.

[0019]

As described above, according to the first aspect of the present invention, when the computer cannot receive the facsimile data, the facsimile apparatus can receive the facsimile data in place of the computer, and the reception omission does not occur.
Further, since the facsimile apparatus has means for changing the level of the facsimile data, that is, the level of the transmission parameter, the facsimile apparatus has a level determined by the other facsimile data transmitting apparatus regardless of the data processing level of the computer. Can be received on behalf of, and facsimile data with high image reproducibility can be quickly obtained. Further, when the level of the received facsimile data is lower than the level of the transmission parameter of the computer, if the level of the facsimile data is changed to a higher level of the transmission parameter of the computer, for example,
When the facsimile device transmits the data received on behalf of the computer to the computer, the facsimile data with high image reproducibility can be transmitted quickly.

According to the second aspect of the present invention, the facsimile data received by the facsimile apparatus as a proxy is changed to the highest level data that can be processed by the computer.
When the facsimile device transmits the data received on behalf of the facsimile device as the facsimile data, the facsimile data having high image reproducibility can be quickly transmitted.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment common to the first and second inventions will be described below in detail with reference to the drawings.

In FIG. 1, 2 is a facsimile machine and 4 is a personal computer (hereinafter abbreviated as personal computer). The facsimile device 2 and the personal computer 4 are connected via an interface box 6, and exchange data held by each device to store, edit, correct data, etc., or function one device 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 the start-stop synchronization signal into voltage in order to interface with the RS232C, which is a standard interface for serial data transmission between the facsimile device 2 and the personal computer 4. have.

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

The RTS control signal line is in a state (RTS ENABLE) or a state (RTS DISABLE) in which the facsimile device 2 permits the transmission of personal computer data (abbreviated as PC data) from the personal computer 4. Is a line for a control signal representing Whether the control signal is selectively set to the H (High) state or the L (Low) state in the facsimile device 2 and whether the facsimile device 2 permits the data transmission in the personal computer 4 based on the control signal Whether or not it is detected. Similarly, the CTS control signal line is in a state in which the personal computer 4 permits transmission of facsimile data from the facsimile device 2 (CTS ENABL
It is a line for a control signal indicating whether it is in E) or in a blocking state (CTS DISABLE), and in the facsimile apparatus 2, the personal computer 4 is in a state in which data transmission is permitted based on the state of the control signal. Whether or not it is detected.

One of the two data lines is a line for transmitting facsimile data from the facsimile device 2 to the personal computer 4, and the other is a line for transmitting PC data from the personal computer 4 to the facsimile device 2. These facsimile data and PC data are coded image data and transmission of coded image data,
Control data for controlling reception (hereinafter referred to as command)
Including 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,
The handset 11 is attached. The handset 11 is placed on a hook (not shown) provided on the main body 10 when not talking, and is picked up from the hook when talking. The former is called the on-hook state and the latter is called the off-hook state. Body 10
An operation panel 12 is provided on the front portion of the upper surface of the sheet, and a recording paper holder mounting portion 13 is provided on the rear portion. A recording paper holder 14 is detachably attached to the recording paper holder mounting portion 13 as shown in FIG. The recording paper holder 14 has a shallow box shape, and a pressure plate 15 is rotatably mounted therein and is biased by a spring 16 to bias the recording paper 17 in 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
9 and the pressure plate 15 are provided with a connecting device (not shown) that connects the recording paper holder 14 to the recording paper holder mounting portion 13 when the cover 19 is opened. Is pressed down against the urging force of the spring 16 to form a space for inserting the recording paper 17 between the pressure plate 15 and the paper feed roller 18. When the lid 19 is closed, the pressure plate 15 is biased by the spring 16 to bring the recording paper 17 into close contact with the paper feed roller 18, as shown in FIG.

A recording paper sensor 20 for detecting the presence or absence of the recording paper 17 is provided at a position adjacent to the upstream side of the paper feed roller 18 in the recording paper feed direction. Recording paper sensor 2
Reference numeral 0 is a contact type sensor, which is a recording paper 1 when the lid 19 is closed.
When 7 is brought into close contact with the paper feed roller 18, the detector of the recording paper sensor 20 is pushed, whereby it can be seen that the recording paper 17 is present.

The recording papers 17 in the recording paper holder 14 are sequentially sent out from the recording paper 17 located at the uppermost position by an automatic paper feeding device including a paper feeding roller 18 and a separation pad 22. The recording paper 17 delivered by the automatic paper feeder is
It is sent to the recording device 29 by the pair of transport rollers 26.

The recording device 29 is provided with a photosensitive drum 30, a transfer device 32, a developing device 33, etc., and the recording paper 17 is sent between the photosensitive drum 30 and the transfer device 32 by a conveying roller 26. . The surface of the photosensitive drum 30 is scanned by the laser light from the laser light scanning device 34, and an electrostatic latent image is formed. The laser light scanning device 34 is
A laser emitting unit 36, a lens 37, a reflecting mirror 38 and the like are provided. The laser emitting section 36 has a laser light source that emits laser light in accordance with a command from the control device 40, a polygon mirror that reflects the laser light, and the like. The laser light emitted from the laser emitting section 36 is reflected by the lens 37.
Is condensed by the reflection mirror 38, reflected by the reflection mirror 38, and irradiated onto the photosensitive drum 30.

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 formation point in the facsimile device 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 formation points (about 0.13 mm × 0.07 mm) ) Corresponds to a minimum reading area, that is, a pixel when the image reading device 42 described later is set to a superfine resolution (this is the highest resolution of the facsimile device 2). Recording device 29
Is capable of recording at a resolution higher than the maximum resolution of the facsimile device 2. A drum motor (not shown) that rotates the photosensitive drum 30 is connected to the 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 recording 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 row by row (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
Toner as a developer is made to adhere 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, and by applying an electric charge to the recording paper 17 and transferring the toner adhering to the photosensitive drum 30 to the recording paper 17, the transfer device 32 is developed on the photosensitive drum 30. The image is transferred onto the recording paper 17. The recording paper 17 after transfer is discharged by a static eliminator (not shown), and then is guided to a fixing device 54 by being guided 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 an image has been fixed is discharged by a pair of discharge rollers 60 to a discharge tray 62 attached to the front surface of the main body 10. To be done.

A toner cartridge 68 is attached to the developing device 33.
When 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,
It is agitated together with the magnetic carrier contained in advance and is repelled 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 then supplied to the surface of the photosensitive drum 30 scanned by the laser beam.

The developing device 33 includes a toner cartridge 68.
A toner remaining amount detecting device 80 (see FIG. 4) for detecting the remaining amount of toner contained therein is provided. The toner remaining amount detecting device 80 includes a detecting portion 82 attached to the main body 10,
A wiper (not shown) attached to the stirring member 70,
A signal processing unit for processing the output signal of the detection unit is provided.

The detecting section 82 is of a transmissive photosensor type and comprises a pair of light emitting section and light receiving section, and these light emitting section and light receiving section are provided at the bottom of the toner cartridge 68.
It is fitted in each of the transparent hollow protrusions. The toner remaining amount detecting device 80 detects the toner remaining amount 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 arrival of facsimile data is detected, and agitates the toner. At this time, the toner between the hollow protrusions is scraped up and the mutually opposing surfaces of the hollow protrusions are wiped by the wiper, and the light receiving portion receives light for a moment. After that, as the remaining amount of toner increases, the toner fills the space between the hollow protrusions more quickly, and the light reception of the light receiving unit is blocked. The remaining toner amount can be detected based on the light receiving time of the light receiving unit, that is, the time from when the light receiving unit is in the light receiving state to when it is again in the light blocking state. The toner empty signal is issued when the remaining amount of toner becomes so small that recording cannot be performed. Since the toner agitation is started when the transmission of the facsimile data is detected, it is possible to know whether the remaining toner amount is a recordable amount after the facsimile data is received and before the recording is started.

On the upper part of the main body 10, the image reading device 42 for reading the image written on the original 90 is provided. Documents 90 placed on a document table 94 provided in the middle of the upper surface of the main body 10 are fed one by one by a document feeding device 96 (see FIG. 4) based on a command to start reading. The fed document is sent to the image reading device 42 by a feed roller or the like. The document table sensor 98 detects that the document is set on the document table 94. A document sensor 99 is attached to the document feeding device 96. The document sensor 99 detects the leading edge and the trailing edge of the document 90 sent to the document feeding device 96. After the document sensor 99 detects the leading edge of the document 90, it is detected that the document 90 has been sent to the reading position, and the document sensor 99 detects that the document 9 has passed.
By detecting the end of 0, it is detected that the reading of the original 90 of one page is completed and the original 90 is sent to a predetermined position.

The image reading device 42 irradiates the original document on the original document support plate 102 with light from the light source 100, reflects the reflected light from the original document by the mirrors 103 and 104, and the lens 1
The image of the original is read line by line by condensing the light by the line 06 and making it enter the line image sensor 108. The line image sensor 108 includes a plurality of charge coupled devices (CCD) as a light receiving body. 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 dot data is 0), and when it is smaller than the threshold value, it is black (dot data). Is set to 1).
The minimum read area read by this CCD is a pixel.

The size of the pixel is determined by the document feed amount (feed speed) by the document feed device 96 while one line is read by the image reading device 42. The size in the scanning line direction is determined by the standard, and the feeding 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), about 0.13 mm (7.7 lines / mm) when fine is set, and 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 is about 0.13 mm × when the fine is set.
It becomes 0.13 mm ×, and when the standard is set, it becomes about 0.13 mm × 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 the image data read at the super fine resolution into the image data for recording. , One dot data in the scanning line direction must be increased to two dot data. After reading, the document is sent by the discharge roller 110 and discharged to the discharge tray 112 through the opening.

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

When facsimile data is transmitted and received between the facsimile device 2 and the partner device 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 will be described later, and the facsimile data is transmitted at the highest level common to the facsimile apparatus 2 and the partner apparatus 114. The same applies to the transmission and reception of data between the facsimile device 2 and the personal computer 4.

In the present embodiment, the transmission parameter level of the personal computer 4 is lower than that of the facsimile apparatus 2,
When the facsimile device 2 transmits data to the partner device 114 or when the facsimile device 2 causes the personal computer 4 to receive the facsimile data transmitted from the partner device 114, the level of the personal computer 4 is set to the level of the facsimile device 2. Transmission parameters are determined based on the level.

First, the resolution will be described. However,
For simplification of description, the pixel size in the scanning direction is the same in all of the facsimile device 2, the partner device 114, and the personal computer 4, and only in the sub-scanning direction, as described above, 0.07 mm, 0.13 mm. , 0.26 mm 3
One of the stages will correspond to super fine, fine, and standard resolutions, respectively.

When facsimile data is transmitted and received between the facsimile device 2 and the partner device 114 regardless of the personal computer 4, the resolution of the facsimile device 2 is superfine as described above, and therefore, the partner device. 1
If the highest resolution of 14 is also superfine, the resolution is determined to be superfine, and 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 the same as that of the display 1 described later.
This is the resolution when an image is displayed on 16. If this display 116 is {200dpi (dots / inch) x 400
If it is composed of liquid crystal having a size of dpi}, this size corresponds to the size of one pixel in the resolution of super fine of the facsimile apparatus 2. But,
This does not mean that the resolution of the personal computer 4 is immediately determined to be super fine. PC 4
The resolution of is generally fine. In the personal computer 4, the sent image data is made to correspond to the liquid crystal of the display device 116 by executing a predetermined program, and the program included in the personal computer 4 creates image data with a fine or standard resolution, This is what is displayed on the display unit 116.

The facsimile apparatus 2 of this embodiment has the highest resolution of super fine as described above, but since the maximum resolution of most of the personal computers 4 is fine as described above, the facsimile apparatus 2 and the personal computer 4 are In between, the resolution is generally finely determined. Therefore, when the facsimile device 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 maximum resolution of the facsimile device 2 is fine,
The resolution is determined based on that.

In this way, when the resolution is determined between the two facsimile devices, in order to guarantee the reproducibility of the original image, the minimum reading unit of the image reading device 42 and the recording device 29.
It may be necessary to process the image data according to the difference in the size of the dot formation points and the difference in the maximum resolution. Further, the image data may be required to be processed between the facsimile device 2 and the personal computer 4 due to the difference in the maximum resolution.

First, the case where the facsimile apparatus 2 receives the 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 device 2 receives the image data created in fine. When printing, each dot data is increased to two dot data in the scanning line direction, and one line data is increased to two line data in the sub scanning line direction.

Next, the facsimile device 2 is replaced by the partner device 11
The case of receiving the image data sent from No. 4 and sending the image data to the personal computer 4 will be described. When the resolution between the facsimile apparatus 2 and the partner apparatus 114 is set to superfine, the facsimile apparatus 2 extracts line data in the sub-scanning line direction every other line and sends it to the personal computer 4. When 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 apparatus 2 is sent to the personal computer 4, the resolution is set to fine, so that the image data processing is unnecessary.

Even if the partner device 114 and the personal computer 4 have only standard resolution,
The image data is processed. For example, if the resolution of the image data received by the facsimile device 2 from the partner device 114 is superfine and the maximum resolution of the personal computer 4 is standard, one line of data is extracted from four lines of data in the sub-scanning line direction. , Partner device 11
If the resolution of the image data sent from 4 is fine, the data of 1 line is extracted from the data of 2 lines and sent to the personal computer 4. When the fine resolution image data sent from the personal computer 4 to the facsimile device 2 is sent to the partner device 114 having the highest standard resolution, the data of 2 lines becomes 1
The line data is extracted.

The paper width will be described. The maximum paper width in the facsimile device 2 is the maximum document width that can be read by the image reading device 42 and also the maximum recording paper width that can be recorded by the recording device 29, and is B4 size in this embodiment. The maximum paper width in the personal computer 4 is the maximum image width that can be displayed on the display unit 116 including scrolling, and is A4 size here.

The paper width between the facsimile device 2 and the partner device 114 and between the facsimile device 2 and the personal computer 4 is such that the paper width of the image data to be sent 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, when the paper width determined between the facsimile device 2 and the partner device 114 is different from the paper width determined between the facsimile device 2 and the personal computer 4, or the original 90 read by the image reading device 42. When the sheet width of the sheet and the sheet width determined between the personal computer 4 are different, it is necessary to process the image data.

For example, when the image data received by the facsimile apparatus 2 is for B4 size and it is necessary to reduce the image data to A4 size image data,
Four pieces are extracted from the five dot data in the width direction (scanning direction) of the B4 size image data, and four line data are extracted from the five line data in the length direction (sub-scanning direction). In the present embodiment, the processing of image data required due to the difference in sheet width and the difference in 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 the present embodiment, the paper width is different from (smaller than) the paper width of the image data to be sent only when the paper width of the image data to be sent is larger than the maximum paper width on the receiving side. Therefore, data increase processing for image enlargement is not performed. Regarding the resolution, although the dot data may be increased in the recording device 29 of the facsimile device 2,
Since the resolution is determined to be the lower one of the highest resolutions of the transmitting side and the receiving side during data transmission, it is not necessary to increase the dot data for data transmission.

The encoding system will be described. Digital data encoding methods for transmitting facsimile data include MMR (Modified MR) method and MR (Modified READ).
(Relative Element Address Designate) method, MH
There are three types of (Modified Huffman) methods, and the MMR method is the most advanced coding method with the smallest number of data.
The R method is the next advanced coding method. In the present embodiment, the encoding system of the facsimile device 2 is MMR system, MR system.
System and MH system, and the encoding system of the personal computer 4 is the MH system.

The coding system is also determined to be the highest coding system among the coding systems common to the transmitting side and the receiving side. When the facsimile device 2 sends the image data received from the partner device 114 to the personal computer 4, or
When the image data received from the device is transmitted to the partner device 114, if the encoding systems of both devices are the same, it is not necessary to convert the encoding system, and the facsimile device 2 directly transmits the received encoded data. However, if the two encoding methods are different, the facsimile apparatus 2 temporarily decodes the received encoded data to form dot data, encodes it with the encoding method determined with the transmission partner, and then transmits it.

FIG. 3 shows the operation panel 12 provided on the front portion of the upper surface of the facsimile apparatus 2. At the rear of the operation panel 12, a display unit 150, a fine lamp 151, a super fine lamp 152, an auto lamp 154,
Fax / tel (F / T) lamp 156, built-in answering machine
(MC) lamp 158 etc. are provided, and numeric keypad 1 is provided at the front.
60, a start key 162, a stop key 164 and the like are provided. Further, a function key 174, a set key 176, a clear key 178, a resolution key 180, cursor keys 182, 184, an incoming call mode key 186, a hook key 188 and the like are provided in the middle part.

On the display unit 150, the state of the facsimile apparatus 2, operation procedures, etc. are displayed. The ten-key pad 160 is operated to input a facsimile number of a facsimile device of a transmission destination and to select a function of the facsimile device. The start key 162 is a key for instructing the start, the reception, and the recording of the facsimile information. The stop key 164 is a key for instructing to stop selection of a function or the like, or to instruct execution of a function. The cursor keys 182 and 184 are keys that are operated when moving the cursor in the display device 150 or when selecting a function.

The function key 174 is a key for instructing the start of display of various functions that can be executed by the facsimile apparatus 2, and the selection of the function is performed by the ten-key pad 16.
This is performed by operating 0 or the cursor keys 182 and 184. The set key 176 is a key to be operated when instructing the selection of a function, etc., and the clear key 178 is
This is a key for instructing cancellation of function selection and the like.

The resolution key 180 is a key for selecting the resolution in the image reading device 42 of the facsimile apparatus 2. The resolution is set to standard by default. In that case, the fine lamp 15
Neither 1 nor the super fine lamp 152 is turned on. When the resolution key 180 is pressed once, fine is set and the fine lamp 151 is turned on. By pressing the resolution key 180 twice, the fine mode is set, the fine lamp 151 is turned off, and the super fine lamp 152 is turned on. Further, if the button is pressed three times, halftone is set, both lamps 151 and 152 are turned on, and the halftone setting is displayed. For the halftone gradation level, use function key 1
74, numeric keypad 160 and cursor keys 182, 18
Either 16 or 32 gradations are set by an operation such as 4.

The incoming call mode key 186 controls the facsimile apparatus 2 to automatically receive (AUTO) mode, manual (MANUAL) mode, fax / TEL (FAX / TEL) switching mode, external answering machine recording (TAD) mode, and built-in answering machine. Recording (MC)
This is a key for selecting which mode to use. The AUTO mode is a mode for automatically receiving data, and the MANUAL mode is a mode for receiving data based on a user's key operation. FAX / TEL
The switching mode (referred to as F / T mode) is a mode in which if the data transmitted through one telephone line is facsimile data, it can be automatically received, and if it is voice data, the handset 11 can be picked up to talk. Is. The TAD mode is an answering machine mode and is a mode in which a message message spoken by the called party is recorded by the external answering machine recording device 190 (see FIG. 4) externally attached to the facsimile device 2. The MC mode is also an answering machine mode, and the above message is recorded by the built-in answering machine recording device 192 (see FIG. 4) built in the facsimile device 2.

The hook key 188 is a key for instructing closing of the line. When the hook key 188 is pressed once in the on-hook state, the line is closed, and when it is pressed twice, the line is opened. Further, although the handset 11 is in the on-hook state, in the monitor state in which the line is closed and the operator can see the line state through the speaker 226, the hook key 18
If 8 is pressed once, the line is released.

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

The facsimile device 2 receives the facsimile data transmitted from the partner device 114 in any one of the paper output mode, the PC / ONLY mode, and the PC priority mode. The paper output mode is a mode in which the image data included in the received facsimile data is recorded on the recording paper 17 and is output.
The NLY mode is a mode in which the personal computer 4 causes the personal computer 4 to receive the facsimile data when the personal computer 4 can receive the facsimile data, but when the personal computer 4 cannot receive the facsimile data, the facsimile device 2 stores the facsimile data in a buffer described later. The PC priority mode is a mode in which the personal computer 4 causes the personal computer 4 to receive the facsimile data when the personal computer 4 can receive the facsimile data, but records the facsimile data in the recording device 29 when the personal computer 4 cannot receive the facsimile data.

By pressing the function key 174,
A plurality of functions that can be executed by the facsimile device 2 are alternately displayed on the display device 150. When the set key 176 is pressed while the output mode setting is displayed, the output mode setting is selected, and each time the cursor keys 186 and 188 are operated, the above three output modes are sequentially displayed one by one on the display unit 150. Is displayed. When the set key 176 is pressed while the desired output mode is displayed, the output mode is set to the mode selected by pressing the cursor keys 186 and 188.

As shown in FIG. 4, the control device 40 provided in the lower portion of the facsimile device 2 is a C device as a processing device.
PU200, RAM202 and ROM2 as storage devices
04, EEPROM 206, input / output port (hereinafter referred to as I /
Called O port. ) 210 and bus 211,
The transmission / reception control circuit 212 and the modem 214 are provided. Further, the CPU 200 includes a DMAC 208, a parallel / serial conversion circuit 240 described later, and the like.

The DMAC 208 is connected to the RAM 202 and I / O.
The control is performed such that data transfer with the port 210 is performed without passing through the CPU 200. DMAC208
Issues a transfer request signal to the CPU 200 via the 47th terminal, and a transfer permission signal for permitting the transfer is D
When issued to MAC 208, RAM 202, EEPR
From OM 206 to I / O port 210, or I / O
Direct transfer of data from O port 210 to RAM 202
(Direct Memory Access) is instructed.

Further, the I / O port 210 has a recording paper sensor 20, a toner remaining amount detecting device 80, a document table sensor 9
8, the document sensor 99, the operation panel 12 and the like are connected, and the personal computer 4 is connected to the network control unit (hereinafter, NC) via the interface box 6.
External lines 224 are connected to each other via 222. The NCU 222 includes the handset 1
1, an external answering machine 190, and a speaker 226 are connected. The I / O port 210 also has a binarization circuit 22.
8, the recording device 29, etc. are connected, and the drive circuit 2
A document feeding device 96, a ringing tone generating device 232, and a built-in answering machine recording device 192 are connected via 30, 231 and 233.

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

In the image reading device 42, the light source 100
Of the original 90 has uneven illuminance (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 correspond exactly to the shading of each pixel on the original 90. In order to deal with this inconvenience, in the facsimile device 2, the threshold value is determined in accordance with the illuminance unevenness and the like, and is tabulated and stored in the EEPROM 206. The supply of the threshold value data from the EEPROM 206 to the I / O port 210 is controlled by the DMAC 208.

In the facsimile device 2, the image reading device 42 produces an image of one line of the original 90 for about 2.5 ms.
Read in. Further, one line of the A4 size original 90 is composed of 1728 pixels. Therefore, the time required to read 8 pixels is approximately 10 μs {(time required to read one line 2.5 ms) ÷ (number of pixels in A4 width direction 1728/8)}. Therefore, the binarization circuit 2
Threshold data is supplied to 28 every 10 μs.

The parallel / serial conversion circuit 240 serially converts the image data when transmitting the image data from the facsimile device 2 to the personal computer 4, and vice versa.
This is a circuit for parallel-converting the encoded image data sent from the personal computer 4 to the facsimile device 2. In this embodiment, in order to convert 8-bit parallel data into serial data, a clock is supplied to the parallel / serial conversion circuit 240 for about 1 ms. The transmission speed between the facsimile device 2 and the personal computer 4 is 960.
Since it is set to 0 bps (bits / second), it takes about 1 ms (1 ÷ 9600 ×) to convert 8-bit data into serial data.
8) Because it takes. This clock is based on the CPU
It is supplied via the No. 47 clock input / output terminal of 200.

Since the 47th clock input / output terminal is also used to supply the 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. It will be. Switching between the DMAC 208 and the parallel / serial conversion circuit 240 is performed by a multiplexer, but the clock input / output terminal of No. 47 is at least 1 ms by the parallel / serial conversion circuit 240 as described above.
It is impossible to perform these switching operations by the multiplexer in a cycle shorter than 1 ms, because it is occupied during this period. On the other hand, 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.

On the other hand, the DMAC 208 also transfers the binarized image data from the I / O port 210 to the RAM 202.
This command is executed by I / O port 2
It is designed to be emitted when image data of 8 bits is supplied to 10 predetermined gate arrays.

Further, the parallel / serial conversion circuit 240
The supply of the clock to the CPU 200 is started by the clock start command of the CPU 200 and ended by the end command. Therefore, the CPU 200 can execute other programs while the clock is being supplied to the parallel / serial conversion circuit 240. Therefore, the control device 40
In the above, in parallel with the supply of the clock to the parallel / serial conversion circuit 240, the image data is encoded based on the program described later stored in the memory of the ROM 204.

Further, the parallel / serial conversion circuit 240
As shown in FIG. 4, the data reception interrupt prohibition flag 2
43, data transmission prohibition interrupt flag 244, P / S reception data buffer 246, P / S transmission data buffer 248
Is provided. The image data and the command data transmitted from the personal computer 4 input from the gate array determined by the I / O port 210 are parallel-converted by the parallel / serial conversion circuit 240 and then stored in the P / S reception data buffer 246. To be done. Further, the image data and command data stored in the P / S transmission data buffer 248 are serial-converted, and then the I / O port 21
It is transmitted to the personal computer 4 from the determined port of 0.

When the facsimile device 2 and the partner device 114 are connected by the external line 224, the transmission / reception control circuit 212 exchanges both the facsimile number and the resolution related information such as the resolution with the partner device 114. Is a circuit that performs.

Further, the modem 214 modulates a digital signal into an analog signal and transmits it to the external line 2 via the NCU 222.
24 to the NCU2 from the external line 224.
The analog signal input via 22 is demodulated into a digital signal. Therefore, the modulation / demodulation mechanism 234
And a voice reproduction mechanism 236 for reproducing the transmitted voice analog data into voice. These modulation / demodulation mechanism 234, audio reproduction mechanism 236, NCU 222
The handset 11 and the like constitute a telephone.

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

The ringing tone generator 232 is connected to the partner device 114.
When a call signal is sent from a telephone or telephone, the control device 4
The ringing tone is generated by the voltage supplied through the drive circuit 231 based on the command from 0. The drive circuit 231 supplies or stops supply of voltage in response to the calling signal.

As shown in FIG. 5, the RAM 202 has 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, own facsimile number buffer 264, dial buffer 2
66, 1-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 preparation completion flag 280, FAX incoming flag 282, paper output flag 284, proxy flag 286, PC transmission flag 288, paper output mode historical line reception flag 292, PC
ONLY mode historical line reception flag 294, PC priority mode historical line reception flag 296, time-up flag 29
8, flag A, flag B, flag C, flag D, flag E, 0 fill data counter 340, 0 data counter 342, line counter 344, image data bit number counter 346, error line counter 348 and the like are provided.

The PC data received by the facsimile device 2 from the personal computer 4 and transmitted to the partner device 114 is stored in the FAX side transmission data buffer 256, and the facsimile data received by the facsimile device 2 from the partner device 114 is stored in the FAX side reception data buffer. It is stored in 254. Further, the facsimile data transmitted by the facsimile apparatus 2 to the personal computer 4 is stored in the PC side transmission data buffer 252, and the PC data and commands received by the facsimile apparatus 2 from the personal computer 4 and recorded are stored in the PC side reception data buffer 250. It In the RAM 202, the buffers 250 to 266, 270, 271, 290, and
A shared buffer shared by 292 is provided.

In the ROM 204, the coded image processing program, the decoded image processing program, FIG. 9 and FIG.
0, FIG. 14 to FIG. 20, FIG. 22 to FIG. 24, FIG.
42, a memory for storing each of the programs shown in FIG. 42, a memory for storing the reading and sending program shown in FIG.

On the other hand, the personal computer 4, 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 is a CPU 30 as a processing device.
7, a RAM 308 as a storage device, a ROM 309, and a bus 310 connecting them, and an I / O port 3
11, a keyboard 300, a display 116, and a mouse 304
Etc. are connected.

One of the plurality of functions displayed on the display unit 116 is selected by operating the mouse 304. As shown in FIG. 6, the keyboard 300 is provided with alphabetic keys 312, numeral keys 314, etc., and is operated when the facsimile number or telephone number of the transmission destination is input.

When the personal computer 4 is connected to the facsimile apparatus 2, the display unit 116 displays at least the functions of transmission, reception, recording, reading, and telephone. Therefore, by moving the mouse 304 on the operation plate, the cursor on the display unit 116 is moved to a portion on the display unit 116 where the function intended by the user is displayed, and the mouse 304 is provided at that position. If one button is pressed, the function is selected, and if the other button is pressed, the selection is canceled. 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 sent from the personal computer 4 to the facsimile device 2 and the partner device 114. When the reception function is selected, preparations for receiving the facsimile data transmitted from the partner device 114 to the facsimile device 2 are made. The program for receiving the facsimile data is started, whereby the output mode is set to the PC / ONLY mode or the PC priority mode in the facsimile apparatus 2 so that the facsimile data transmitted from the facsimile apparatus 2 is received. can do. The PC data is transmitted from the personal computer 4 to the facsimile device 2 and also to the partner device 114. When the reading function is selected, the image data read by the image reading device 42 of the facsimile device 2 is sent to the personal computer 4. When the recording function is selected, PC data is transmitted from the personal computer 4 to the facsimile device 2 and recorded by the recording device 29. If the telephone function is selected, the other party is designated from the personal computer 4 to the facsimile device 2,
The telephone of the facsimile device 2 makes a call.

In the RAM 308, 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, etc. are provided. Further, 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.

The facsimile device 2 and the partner device 114
Communication between and is usually carried out in five communication phases. In phase A, a call is set up and a line is established, and in phase B, the state of data lines and the like is confirmed and transmission parameters such as resolution and paper width are determined. In phase C, a message such as image data is transmitted, and in phase D, a message delimiter instruction and reception confirmation are performed. If all the messages to be sent have not been sent, the process is returned to phase B or phase C, and the sending of the message is continued again. Phase B or phase C is repeatedly executed until the transmission of the scheduled transmission message is completed. In phase E, the call is restored, that is, the line is disconnected (released). Further, the communication between the facsimile device 2 and the personal computer 4 is started from phase B and is performed in four transmission phases because call setting and the line probability are unnecessary. These phases A to E will be described later in detail.

The operation of the facsimile apparatus 2 configured as above will be described. In the idle state of the facsimile apparatus 2, the start of any one of the functions such as transmission, reception, recording, image reading of the facsimile data, and telephone call by the telephone is awaited. When a command is transmitted from the personal computer 4 to the facsimile device 2 in this idle state, the facsimile device 2 takes in 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 instruct an interrupt processing program to be executed for an interrupt signal.

The interrupt signal is the P / S reception data buffer 2
It is issued when the 8-bit data is stored in 46 and when the P / S transmission data buffer 248 is 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 interrupt prohibition flag 243 is always in the interrupt enable state. In this embodiment, the data can be sent at any time. When transmitting image data or a command from the facsimile device 2 to the personal computer 4, execution of the interrupt processing program is normally prohibited, and the interrupt vector is permitted and the interrupt vector is set at the time of actual transmission. When the facsimile device 2 receives the image data or the command from the personal computer 4, the reception interrupt process is always permitted, and therefore only the interrupt vector is set. The setting of these interrupt vectors and the setting and resetting of the data transmission interrupt prohibition flag 244 are performed in each program for executing transmission of PC data by the facsimile apparatus 2, recording, transmission of received facsimile data to the personal computer 4, and the like. Done in. The order of sending and receiving these image data and commands, and the types of commands exchanged are fixed,
When transmitting and receiving the image data and commands in the program, the interrupt vector is set and the data transmission interrupt prohibition flag 244 is set and reset, but the description is omitted in principle.

Facsimile device 2 in idle state
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. Explain. When the command is transmitted from the personal computer 4 to the facsimile apparatus 2, the idle command reception P / S interrupt processing program shown in FIG. 9 is executed. First, step 1 (hereinafter,
It is abbreviated as S1. Same for other steps. ), One byte of data is taken out from the P / S reception data buffer 246 of the parallel / serial conversion circuit 240 and stored in the PC side reception data buffer 250 in S2. 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 determination result is NO, one execution of this program ends, and the execution from S1 is started again.

Then, while this operation is repeated, S
If the determination result of 3 is YES, it is determined in S4 whether or not the character AT indicating the start of the command is present in the data stored in the PC-side reception data buffer 250 by then, and the result of this determination If YES, S6 and the subsequent steps are executed assuming that one command has been detected. The command starts with the character AT, is followed by data representing the contents of the command, and is configured to end with the character CR. If CR is detected in S3 and AT is detected in S4, one command is It has been detected.

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

If it is an AT command, the determination result of S6 is Y.
The status becomes ES, and it is determined in S11 whether or not the content of the command is an operation command. The operation command is a command for instructing some operation such as dialing, and if it is an operation command, S14 is executed and a flag corresponding to the command is set. Even if the determination results of S7 and S8 are YES, S12 and S1 respectively.
In 3, it is determined whether 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 result of S13 is NO, 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 of S5 is NO, and the response to the command is S10. Done. For example, if the content of the command is the facsimile device 2
When asking for the transmission parameter of, the data representing 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 the command is neither the AX command, the printer nor 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 of 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.

These error commands in S10, O
Specifically, the output of the K command and the output of the error command in S9 are to write the content of the command in the PC side transmission data buffer 252, and the written command is the idle command output P / shown in FIG.
It is output to the personal computer 4 according to the S interrupt processing program.

At S21 of this program, the PC
It is determined whether or not there is data in the side transmission data buffer 252. If there is data, the determination result of S21 is YE
S becomes, and in S22, the PC side transmission data buffer 2
After the data is retrieved from 52, P /
It 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 of 21 becomes NO, and the interrupt for command output is prohibited in S24. Even if there is no data in the PC side transmission data buffer 252, the output process is prevented from being performed.

The facsimile device 2 transmits the PC data to the partner device 114 according to the instruction from the personal computer 4.
Performs three operations: recording PC data and making phone calls. First, the transmission of PC data to the partner device 114 will be described. A procedure of receiving PC data from the personal computer 4 and transmitting PC data to the partner device 114 will be schematically described based on the sequence chart shown in FIG. In FIG. 11, the DTE (Data Terminal Equipment) is a PC 4, a DCE (Data Cercuit termi).
nating Equipment, a data line terminating device) is a facsimile device 2, and REMOTE FAX is a partner device 11.
It is 4.

In the idle state until the personal computer 4 instructs the transmission of PC data, the personal computer 4 transmits a command (AT + FCPASS = 2) for setting the data transmission / reception processing capability of the facsimile apparatus 2. The facsimile apparatus 2 returns an OK command if the data transmission / reception processing capability is CLASS2. In addition, the personal computer 4 sends a signal (AT + FD) indicating its own transmission parameters.
CC = vr, wd, df, br) to the facsimile device 2
Then, 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 indicating each level of vr, wd, df, and br.

When the personal computer 4 is instructed to transmit the PC data, the personal computer 4 calls the facsimile device 2, that is, the partner device 114 for transmitting the image data.
Command to send the facsimile number of the other device to the external line 224 and call the other device 114 (ATD +
STRING) (STRING is a number string representing a facsimile number) is output, the facsimile apparatus 2 closes the line and dials in accordance with the command, and the CI signal is sent to the partner apparatus 114. Further, the facsimile device 2 is C when transmitting facsimile data.
Issue an NG (CALLING) signal.

On the other hand, the partner device 114 sends the CED
A (Called Station Identification) signal (a called terminal identification signal) and a V21 flag are returned. The V21 flag is a signal that is issued each time the output direction of the command is changed and a new signal is output, and then all the constituent elements of the communication line are put in an appropriate state so that the data can be sent without being damaged. It is a signal that ensures that it is adjusted. From calling to V2
Phase A is until the reception of one flag.

The partner 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 device 2 which is the calling terminal of the transmission / reception function (resolution, paper width, encoding method, data transmission speed, etc.) of the partner device 114 which is the called terminal.
When the facsimile device 2 receives the DIS signal, it sends a + FCON signal (facsimile connection signal) to the personal computer 4.
+ FDIS signal (remote device function report signal) and O
Send a K signal. In contrast, the PC 4 (AT +
An FDT (Data Transmission) signal is output to the facsimile device 2, and then the facsimile device 2
A DCS (Disital Command Signal) signal is output to 14. The DCS signal is a signal notifying the transmission parameter between the facsimile device 2 and the partner device 114, which is set based on the transmission parameter of the partner device 114 indicated by the DIS signal, and is transmitted to the personal computer 4 and the partner device when transmitting PC data. With the device 114, common and highest level transmission parameters are set. In addition, above +
FCON, + FDIS, etc. are AT + FCON, AT + FD
It is an abbreviation for IS and the like, and “+” is omitted in the flowchart.

The facsimile apparatus 2 also uses the TCF (Trai
ning Check) signal is output to the partner device 114. A predetermined number of 0 bit data is transmitted from the facsimile device 2 to the partner device 114 within a fixed time, and the partner device 1
Since it is checked in 14 whether or not the bit data can be received, it is checked whether or not the encoded image data can be transmitted at the set transmission rate between the two devices. If possible, the transmission speed is reduced in the facsimile device 2 in response to the request from the partner device 114, and the check is performed again. If the result of the training check is normal, the partner device 11
4 is a CFR (Confirmation to Re
The facsimile apparatus 2 is informed that the procedure before outputting the (receive) signal and 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 parameter set with the partner apparatus 114, and at the same time, C
Output the ONNECT signal. In addition, the output of the RTS control signal line is set to a state in which transmission of PC data is permitted, and F
Notify that the AX side transmission data buffer 256 has a capacity to store PC data, and if there is no capacity, RTS.
The output of the control signal line is set to a state in which transmission of PC data is blocked. Phase B at the output of the CONNECT signal
Ends.

The FAX side transmission data buffer 256
Whether or not there is a capacity for storing PC data depends on whether or not the FAX-side transmission data buffer 256 is full of data, and if full, whether or not the shared buffer of the RAM 202 is also full of data. To be detected. Detection of whether or not there is a capacity for storing data in other buffers is performed in the same manner. The personal computer 4 outputs the PC data to the facsimile device 2 when the output of the RTS control signal line is in a state in which the transmission of the PC data is permitted, and does not output it in the state in which it is blocked.

When the personal computer 4 can transmit data to the facsimile device 2, first, the first page of the coded image data (PIX DATA) is transmitted, and the facsimile device 2 transmits the transmitted data. It is sent to the partner device 114. <DLE><ET at the end of the data on page 1
X> data is added, and if these data are sent, the facsimile apparatus 2 indicates that the transmission of the image data of one page to the partner apparatus 114 is completed and the transmission to the command is changed to RTC (Return to Return). Control) PATTERN
Send a signal. Phase C ends when this RTC PATTERN signal is output.

Next, phase D is executed and the personal computer 4
The OK signal is output to the personal computer 4, and the personal computer 4 outputs a signal indicating that there is a next page (AT + FET = X) according to the OK signal
Is output to the facsimile device 2. If the value of X is 0, it means that there is data for the next page, and if it is 2, it means that the data has ended. If there is next page data, the facsimile apparatus 2 sends MPS (Multipage Signal) to the partner apparatus 114.
A signal is sent to signal the end of the page of data and the transmit procedure returning 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 encoded image data sent up to that point has been completely received.

When the transmission parameters are changed when one page is completed, the EOM (En
d of Message) signal is sent and the transmission procedure is Phase B
I will be returned to the beginning.

Next, the facsimile apparatus 2 is connected to the personal computer 4
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) When the signal is output to the facsimile device 2, the facsimile device 2 outputs a CONNECT signal to the personal computer 4, and after setting the output of the RTS control signal line to a state in which transmission of PC data is permitted or blocked, Phase C is executed, the encoded image data is sent from the personal computer 4 to the facsimile device 2, and the facsimile device 2 sends it to the partner device 114. The exchange of these (AT + FDT) signal and CONNECT signal and the setting of the output of the RTS control signal line are the same as part of phase B, but here, the process returns to the beginning of phase C and the transmission parameters are the same. Phase D in order to send the encoded image data which is
At these points, these signals are exchanged.

When 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 to the facsimile apparatus 2 the data (AT + FET = 2) indicating that there is no next page data in phase D. As a result, the facsimile apparatus 2 causes the partner apparatus 114 to
EOP (End of Procedure) signal (procedure end signal) is output to indicate the end of page and that there is no other transmission data.
Phase E is performed after receiving the MCF signal from the partner device 114 and outputting the (+ FPTS: 1) signal to the personal computer 4. 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 whole procedure of data transmission is completed. In the description of the above sequence chart, the “signal” is a command in which the CNG signal and the 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 and the transmission partner are specified in the personal computer 4. The PC data transmission instruction is given according to the PC data transmission instruction program shown in FIG. First, S31
At, it is determined whether transmission of PC data is selected. If PC data transmission is selected, the determination result in S31 is YES, and in S32, R of the personal computer 4 is read.
P stored in the PC data buffer 320 of AM 308
An input instruction prompting the user to input the 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. When the input is completed, the determination result of S33 becomes YES, and the input instruction of the transmission partner is displayed on the display device 116 in S34. The destination is designated by inputting the facsimile number of the 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 of S35 becomes YES, and the execution of the program ends. The image data of the PC data instructed to be transmitted is encoded and stored in the encoded image data buffer 326.

If the transmission start is instructed after the transmission PC data and the transmission partner are designated as described above, the determination result of S41 of the PC data transmission program shown in FIG. 13 is YE.
It becomes S. Next, in step S42, a call transmission command, which is a dialing instruction to the transmission partner during image data transmission, is transmitted to the facsimile apparatus 2. (ATD +
The STRING) signal is output.

The PC shown in FIG. 11 in S43 to S46.
Output of the signal shown in the sequence chart during data transmission,
If the reception is performed and the PC data is allowed to be sent to the facsimile device 2, the determination result in S46 is YES, and one code data is sent to the facsimile device 2 in S47. After that, S46 to S48 are repeatedly executed until the encoded image data of one page is transmitted. During this time, when the FAX side transmission data buffer 256 of the facsimile apparatus 2 is full and PC data cannot be transmitted, the determination result of S46 is NO,
It is awaited that the PC data can be sent out.

When the transmission of the encoded image data of one page is completed, the determination result of S48 becomes YES, the OK command from the facsimile apparatus 2 is obtained, and the determination result of S49 becomes Y.
After becoming ES, it is determined in S50 whether or not there is coded image data to be transmitted next. If there is encoded image data on the next page, the determination result in S50 will be YES,
After S51 to S54 are performed as shown in the transmission sequence chart, execution of the program returns to S46, and the encoded image data of the next page is sent to the facsimile apparatus 2. If the encoded image data of the next page does not exist, the determination result of S50 becomes NO, the communication end process is performed in S55 and S56, and then the transmission partner buffer 324 in S57.
Then, it is judged whether or not the transmission partner still remains.
If there are a plurality of transmission partners, the determination result of S57 is YES, the program execution returns to S42, and the facsimile device 2 is instructed to the next transmission partner. If the PC data is transmitted to all the designated transmission partners, the determination result in S57 is N.
It becomes O, and the execution of the program ends.

As described above, when the calling transmission command (ATD + STRING) is transmitted from the personal computer 4 to the facsimile device 2 in order to transmit the PC data to the partner device 114, the facsimile device 2 executes the step 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 STRING (numerical string) transmitted from the personal computer 4 in S73 and the facsimile device 2
It is determined whether or not the number of digits of the facsimile number of its own stored in the own facsimile number buffer 264 of No. 1 matches.

Now, the own facsimile number buffer 26
Assuming that the own facsimile number is stored in the area 4 without the area code, in principle, the destination of the transmission on the PC 4 is designated by inputting the area code and the facsimile number as described above. Because it is done, S73
The result of the determination is NO, and it is determined in S74 whether the numbers of common digits match. Among the longer facsimile numbers, the same number of digits as the shorter facsimile number is compared from the end. Here, the partner device 11
It is assumed 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, the determination result in S73 is YES, and S7
At 5, it is determined whether all the numbers match. When the transmission of data to the partner device 114 is instructed, the determination result of S75 is NO, and S77 is executed.

When inputting the facsimile number, in order to make it easy for the operator to understand, the area code or local area code is put in parentheses or a hyphen is placed between the local area code and the subscriber number. A symbol such as a space or a space may be inserted. This is the same when the transmission destination is specified by the personal computer 4 and when the facsimile number of the facsimile machine 2 is stored in the own facsimile number buffer 264. However, since the symbols such as parentheses are not substantially facsimile numbers, when the facsimile number includes symbols, the facsimile device 2 is designated as the transmission partner depending on whether the numbers match except the symbols. It is determined whether or not it has been done. The number in the facsimile number is called dial effective 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, or whether a ringing signal for an external call is being detected. If dialing is not possible, the determination result in S77 is NO and S8
4 is executed and an error command is output to the personal computer 4.

If dialing is possible, the determination result in S77 is YES, and in S78, dial buffer 266 is used.
Dial effective data, that is, numbers are stored in. Next, S79 is executed, and it is determined 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 numeric string for some reason, there is no dial valid data in the dial buffer 266, and S79
The result of the determination is NO, and in S85, it is determined whether or not the dial command, that is, the instruction from the personal computer 4 is to make a call. Since the transmission of facsimile data is instructed here, the determination result in S85 is NO, and an error command is output to the personal computer 4 in S84.

If the dial buffer 266 has dial valid data, the determination result of S79 is YES and S80.
After the line is closed in step S81, S81 is executed and the dial transmission process is performed. For example, a pulse signal representing a facsimile number instructed from the personal computer 4 is transmitted to the external line 2
It is output to 24. Then, in S82, it is determined whether or not the dial sending process has been performed without any trouble. For example, if the partner device 114 is in use, or if the partner device 114 is busy even if it is not in use due to confusion in the exchange, dial transmission processing will be hindered. Is NO in S82
Then, the line is released in S83, and an error command is output to the personal computer 4 in S84.

If the dial sending process is performed without any trouble, S
The result of the determination at 82 is YES, and it is determined at S88 whether or not it is the calling transmission command. Since this is a call transmission command, the determination result in S88 is YES, and in S89, the dial transmission process is terminated and the type of data to be transmitted is set. The PC data transmission flag 268 is set.

At the time of PC data transmission, the PC data transmitted from the personal computer 4 to the facsimile device 2 is the partner device 1
14 is transmitted. When transmitting the PC data, the facsimile device 2 receives encoded image data from the personal computer 4, receives commands output from the personal computer 4, sends data from the facsimile device 2 to the personal computer 4 and sends commands, and the facsimile device 2 To partner device 11
The transmission of the encoded image data to 4, the output of the command, and the reception of the command from the partner device 114 are all performed by the interrupt process.

The image data reception P / S interrupt process during data transmission of the facsimile apparatus 2 will be described with reference to the program shown in FIG. In this interrupt processing, the encoded image data is sent from the personal computer 4, and the P / S reception data buffer 2
This 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 has been fetched from the P / S reception data buffer 246 in S101, S1
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 of S102 is N.
It becomes O, and it is judged in S103 whether or not the data is <DLE>. If it is not <DLE> data, the determination result of S103 is NO, and E
It is determined whether the data is OL (End of Line) data. EOL data is data indicating the end of one line, and if it is not EOL data, the determination result in S104 is NO.
Then, in S106, the data is stored in the FAX side transmission data buffer 256.

If it is EOL data, the decision result in S104 is YES and S105 is executed, and the number of bits of the coded image data between the EOL data and the EOL data immediately before it is counted. Then, if the number of bits is a number that is transmitted in a time shorter than the minimum transmission time of the encoded image data of one line, bit data of 0 is stored in the FAX side transmission data buffer 256 and based on the data transmission rate. The set minimum transmission time of one line is maintained. This 0 bit data is called 0 fill data.

In S105, it is also detected whether or not there is room to store the data in the FAX side transmission data buffer 256, and if the data cannot be stored any more, the output of the RTS control signal line is set to the state of blocking the transmission of PC data. To be done. The personal computer 4 watches the output of the RTS control signal line during data transmission to the facsimile device 2, and if the output is blocked, the transmission of data to the facsimile device 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 the state where it can store the data again. In that case, the output of the RTS control signal line is P
The C data is allowed to be transmitted, and the personal computer 4 can resume the data transmission to the facsimile device 2.

If the data is <DLE>, the determination result of S103 is YES, and the SLE flag 272 is set in S107. Therefore, when the determination of S102 is performed next, the determination result is YES, and after the DLE flag 272 is reset in S108, S109 is performed.
At <10>, it is determined whether or not the next fetched data is <DLE>. If <DLE>, the FAX side transmission data buffer 256 stores <DLE> data in S106. If it is not <DLE> data, the determination result in S109 is NO, and C is determined in S110.
It is judged whether or not it is AN (CANCEL) data, and C
If it is AN data, the cancel flag 274 is set in S111.

If the data is <ETX> data, the determination result in S110 is NO, and the determination result in S112 is YE.
When S is reached, S113 is executed, and RTC PATTERN data is stored in the FAX-side transmission data buffer 256. The RTC PATTERN data is data including 6 pieces of EOL data.

The command reception interrupt 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 break. If it is not CR data, the determination result of S122 is NO, and the data is stored in the PC-side reception data buffer 250 in S123.

If it is CR data, the decision result in S122 is YES, the content of the command is interpreted in S124, and then the 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 transmitting PC data is the same as the idle command output P / S interrupt processing described above, and the description thereof is omitted.
The data transmission P / S interrupt process to the personal computer 4 is the same as the P / S interrupt process when the facsimile data is transmitted from the facsimile device 2 to the personal computer 4, and will be described later.

The coded image data received by the facsimile apparatus 2 from the personal computer 4 and stored in the FAX side transmission data buffer 256 is written in the modem transmission data buffer 238 by the interruption process, and is transmitted from the modem transmission data buffer 238 to the partner apparatus 114. Sent out.

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

There are a plurality of interrupt processing programs, and as in the case of sending and receiving image data and commands between the personal computer 4 and the facsimile apparatus 2, an interrupt processing program to be executed for an interrupt signal is designated. An interrupt vector is set in order to do so.

The interrupt signal is the modem reception data buffer 2
It is issued respectively when 8-bit data is stored in 39 and when the modem transmission data buffer 238 becomes empty. Execution of the interrupt processing program in response to the generation of the interrupt signal is prohibited or permitted by setting or resetting the data reception interrupt prohibition flag 241 and the data transmission interrupt prohibition flag 242. The data reception interrupt prohibition flag 241 is always in the interrupt enable state. The data is ready to be received. Facsimile device 2
Regarding the transmission of the image data or the command from the other party to the partner device 114, the execution of the interrupt processing program is normally prohibited, and is permitted at the time of the actual transmission. When the facsimile device 2 receives a command from the partner device 114 (the same applies when receiving image data), the reception interrupt process is always permitted, and therefore only the interrupt vector is set. 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 sending the encoded image data to the partner device 114 (modem 214) will be described. When the modem transmission data buffer 238 becomes empty, an interruption signal is issued, and the data transmission image data transmission modem interruption processing program shown in FIG. 17 is executed. FA in S131
The X-side transmission data buffer 256 determines whether or not the preparation for transmitting the encoded image data is completed.
This determination is made based on whether or not one line of encoded image data has been collected in the FAX-side transmission data buffer 256. Whether or not the encoded image data for one line is complete is
This can be determined by whether or not the EOL data is stored in the FAX-side transmission data buffer 256 following the encoded image data. If the preparation is completed, the determination result of S131 is YE
In S132, the encoded image data is taken out from the FAX-side transmission data buffer 256 one byte at a time in S132, and the modem transmission data buffer 238 is extracted in S133.
Stored in.

Then, in S134, it is determined whether or not the written data is the data representing the end of RTC PATTERN. Since the RTC PATTERN data is composed of 6 pieces of EOL data, it is determined here whether or not the data written in S134 is the sixth piece of EOL data. S13
The determination result of 4 is initially NO, and the execution of the program ends.

While the FAX side transmission data buffer 256 stores the EOL data following the data to be encoded, the determination result in S131 is YES, and the encoded image data stored in the FAX side transmission data buffer 256 is stored. Are written in the modem transmission data buffer 238 byte by byte. In addition, it represents RTC PATTERN data 6
When one piece of EOL data is stored, the determination result of S131 is YES, and the EOL data is written in the modem side transmission data buffer 238. Then, if the sixth EOL data is written in the modem side transmission data buffer 238, the determination result of S134 is YES. RT
It is the end of the C PATTERN data and the end of the transmission of the encoded image data of one page, and in S135, M
An interrupt vector that outputs the PS signal is set.

If the FAX side reception data buffer 256 is not ready to transmit the encoded image data, S
The determination result of 131 becomes NO, and 1-bit 0 fill data is set in the register in S136. The 0 fill data will be written between the EOL data and the encoded image data, and after writing, the timer provided in the CPU 200 is set in S137. Next, after the count value of the 0 fill data counter 340 is incremented by 1 in S138, it is determined in S139 whether or not the set time has elapsed.

The 0 fill data written in the register is written in 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 will not be disconnected. However, when a predetermined number of 0 fill data has been written or before the set time has passed,
The determination result of S139 is Yes. The determination result of S140 is YE.
S becomes 0, and at S141 0 fill data counter 3
40 is reset, the cancel flag 274 is set in S142, and the communication is terminated. FAX
This is because it is abnormal that the side transmission data buffer 256 has no data for a long time.

The command output to the modem 214 during data transmission will be described based on the data transmission command output modem interrupt processing program shown in FIG. It should be noted that at the time of data transmission, various types of commands are transmitted and received between the facsimile apparatus 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 set based on FIGS. 18 (a) and 18 (b).
The output of the CS signal and the TCF signal will be representatively described.

S151 of the program shown in FIG. 18 (a)
At the DCS signal is the modem transmit data buffer 238
After being written into the
Set to CF output. This is because the TCF signal is output next to the DCS signal. At the time of outputting 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 and execution of the data transmission interrupt process is prohibited.

Reception of a command from the modem 214 at the time of data transmission will be described based on the data reception 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 receiving is set for each of them, but in FIG. 19, an interrupt processing program for receiving a DIS signal is representatively shown. explain.

This interrupt processing program, when the interrupt vector is set to receive the DIS signal, stores 8 bits of data in the modem reception data buffer 239, and generates an interrupt signal. The execution is started. First, in S161, it is determined whether or not a command is received. This determination is made based on whether or not data is stored in the modem reception data buffer 239,
If stored, the determination result of S161 is YES, and S1
In 62, the command is CSI (Called Subscriber Id
entification) signal (a signal representing the facsimile number of the facsimile machine on the receiving side).

This program starts to be executed when 8-bit data is stored in the modem reception data buffer 239 as described above, and the modem reception data buffer 239 is started at the start of execution of this program.
The first data stored in is the data representing the type of signal, and it can be seen whether or not the transmitted signal is a CSI signal. In this facsimile device 2,
Even if the CSI signal is sent, it is not used, it is discarded as it is, and TSI (Transmit Station I) for the CSI signal is sent.
dentification) signal is not output. Therefore, if the command is the CSI signal, the determination result of S162 is YES and the execution of the program ends.

When the DIS signal is transmitted, the determination result of S162 becomes NO, the determination result of S163 becomes 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 data indicating the command end, that is, the end of the DIS signal. If the determination result is YES, S166 and the subsequent steps are executed, but NO.
If so, the process ends as it is, and the execution from S161 is repeated. Note that once the FA signal
If stored in the X-side reception 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 based on the DIS signal of the FAX side reception data buffer 254 whether the facsimile apparatus 2 and the partner apparatus 114 are models capable of transmitting data. If possible, it is determined in S167 whether there is data to be transmitted.
In this determination, the read image data read by the image reading device 42 in the facsimile device 2 is used as the partner device 11
4 is transmitted depending on whether or not the original 90 is set. When transmitting PC data to the partner device 114, a calling transmission command (ATD + STRING) for instructing transmission of PC data is sent to the PC 4 It is performed depending on whether or not it is transmitted from. If there is data to be transmitted, the transmission parameter between the facsimile apparatus 2 and the partner apparatus 114 is determined and the content of the DCS signal is set in S168. Next, in S169, after the interrupt vector is set to execute the output of the DCS signal, S17
At 0, execution of interrupt processing for data transmission is permitted.

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

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 opening of the line in S174, the data transmission is permitted in S175.

Transmission of PC data will be described based on the PC data transmission program shown in FIG. Whether or not the PC data is transmitted is determined depending on whether or not the PC data transmission flag 268 is set in S201.
If the PC data transmission flag 268 is set, S2
The determination result in 01 is YES, and in S202 and S203, after the signal output and reception of the CNG signal and the like after the phase A dial transmission is performed, the phase B is performed in S204, and the facsimile device 2 and the partner device 114 are connected to each other. The transmission parameters are set between them. PC here
Since it is data transmission, the transmission parameter of the personal computer 4 is regarded as the transmission parameter of the facsimile device 2.
The transmission parameters of the personal computer 4 are stored in the PC transmission parameter buffer 263, and the facsimile device 2
The level of the transmission parameter between the personal computer 4 and the partner device 114 is set to a common and highest level.

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

If there is no error, the determination result of S205 is N.
Although it becomes O and the phase C is executed, since 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 process, the phase C is set in this program. As described below, the determination as to whether the encoded image data has been transmitted from the personal computer 4 for one page is only repeatedly executed.

If the determination result in S205 is NO, S
At 208, it is determined whether the transmission has been canceled. This determination is made based on whether or not the cancel flag 274 is set.
The determination result of 208 is YES, and S206 and S207
Is executed and the communication ends. Cancel flag 274
In response to a cancel instruction by pressing the cancel key on the personal computer 4, or as described above, the FAX
Set when there is no coded image data in the side transmission data buffer 256 for the set time or while the set number of 0 fill data is written,
In either case, communication is terminated. In S208, it is further determined whether or not the stop key 164 provided on the operation panel 12 is pressed. If the stop key 164 is pressed to instruct the end of data transmission, the transmission is ended.

If it is not canceled or stopped, S2
The determination result of 08 is NO, and it is determined in S209 whether or not the data transmission of one page has been completed. This determination is based on RTC in the data supplied from the FAX side transmission data buffer 256 to the modem transmission data buffer 238.
This is done depending on whether or not there is PATTERN data.
R / R from the parallel / silyl conversion circuit 240 by interrupt processing
S2 if TC PATTERN data is loaded
The determination result of 09 is eventually YES, and in S210, it is determined whether or not the FAX-side transmission data buffer 256 is empty. If the data indicating the end of one page is detected and the FAX side transmission data buffer 256 becomes empty and all the data is transmitted, the determination results of S209 and S210 are both YES, and the personal computer 4 is OK in S211. The signal is output. RTC PATTE
Even if the FAX side transmission data buffer 256 becomes empty before the RN data is obtained, the OK command is output so that the transmission of the image data does not end in the middle of one page.

Next, phase D is executed, and first, S2
At 12, it is determined whether there is next page data. If there is next page data, the determination result in S212 is YES, and it is determined in S213 whether or not the transmission parameter is changed. If there is no change, the determination result of S213 is NO, and the signals of phase D are sent and received in S214 to S222.

It should be noted that the facsimile machine 2 is the partner machine 11
When waiting for MCF signal and (AT + FDT) signal from S4, the timer is set and S217 and S22
In 1, it is determined whether or not the set time has elapsed, and 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 program execution returns to S208, and the phase C is executed.

If the transmission parameter is changed, the determination result in S213 is YES, and in S223, the partner device 1
An EOM (End of Messange) signal is output to 14. Next, S224 to S227 are executed, and MC is set within the set time.
If the F signal is obtained, execution of the program returns to S204, transmission parameters are set with the partner device 114, and 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 open) at the end of transmission are performed, and the data transmission ends.

When the data transmission to one partner device 114 is completed in this way, in the personal computer 4, as described above regarding the PC data transmission program of FIG.
After receiving the NG: 0) signal, it is determined in S57 whether or not there is a partner to which the PC data is to be transmitted next, and if there is a partner to be transmitted, a call transmission command is output to the facsimile device 2 and the same PC data Is sent to the facsimile device 2 and is sent to a different partner device 114. Thus, when PC data is transmitted to a plurality of transmission partners including the transmission to the facsimile device 2, the PC data is supplied from the personal computer 4 to the facsimile device 2 for each transmission partner.
It is not indispensable to store all the PC data in the facsimile apparatus 2, and the capacity of the buffer for storing the PC data may be small or the capacity may be full.

Next, the transmission of PC data to the facsimile apparatus 2 itself will be described. In the transmission program shown in FIG. 14, the number of digits in the number string output from the personal computer 4 to the facsimile device 2 is the self-facsimile number buffer 26.
When the number of digits is the same as that of the facsimile number stored in 4 and all of the numbers match, or when the numbers of digits are different but all of the common digits match, the determination of S75 or S74. When the result is YES, S76 is executed, and the print flag 276 is set. The fact that the numeral string supplied from the personal computer 4 and the numeral string stored in the facsimile device 2 match means that the facsimile device 2 itself has been designated as the transmission partner of the PC data. In this case, the personal computer 4 sends the PC data to the facsimile device 2 as in the case of transmitting the PC data to the partner device 114, and the PC data is recorded in the facsimile device 2.

The recording device 29 of the facsimile device 2 is a PC
The procedure for recording data will be described based on the sequence chart shown in FIG. In order to record the PC data in the recording device 29 of the facsimile device 2, the personal computer 4 asks for the capability of the facsimile device 2 (AT + BR).
PR =? ) Is output. On the other hand, the facsimile apparatus 2 sends a signal (BRPR: vr, w) indicating the type of resolution and paper width.
In response, the personal computer 4 sends a signal (AT + BRPR = vr, which sets a common and highest level to the recording level).
wd) is output to the facsimile apparatus 2. When the cover of the device is open or an error such as a recording paper jam occurs, the facsimile device 2 outputs signals (BRNG: COVEROPEN, BRNG: P) indicating them.
LINTER JAM) to the personal computer 4.

When the recording start is instructed from the personal computer 4,
Signals necessary for recording are exchanged, and PC data is transmitted. As can be seen from a comparison with the sequence chart at the time of PC data transmission shown in FIG. 11, these are performed by the personal computer 4 and the facsimile apparatus 2 at the time of PC data transmission. Between
This is the same as the transmission of C data. Therefore, when the facsimile device 2 is designated as a transmission partner, the PC data transmission from the personal computer 4 to the facsimile device 2 is excluded from the PC data transmission procedure except the data transmission from the facsimile device 2 to the partner device 114. It is possible to cause the facsimile apparatus 2 to record the PC data as part of the transmission of the PC data.

At the time of recording PC data, the facsimile apparatus 2 receives the coded image data according to the recording image data reception P / S interrupt processing program shown in FIG. PC
When the PC data recording program shown in FIG. 23 is executed for recording data, the interrupt vector retrieves the PC data from the P / S reception data buffer 246 by this recording image data reception I / O interrupt processing program. P
This is because it is set to be stored in the C-side reception data buffer 250. The command reception from the personal computer 4, the command output to the personal computer 4 and the data transmission at the time of recording the PC data are the same as those at the time of transmitting the PC data, and the description thereof will be omitted.

This interrupt processing program is executed every time 8 bits of encoded image data are transmitted from the personal computer 4, but since the data is not transmitted to the partner device 114, the received encoded image data is The 0 fill data is stored in the reception data buffer 250 on the PC side and is not stored to keep the transmission time of 1 line. When storing the encoded image data in the PC-side reception data buffer 250,
Whether or not the PC-side reception 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.
The other parts are the same as the image data reception P / S interrupt processing program during data transmission shown in FIG.

Since 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 by executing S302 to S306, the signal exchange necessary for receiving the encoded image data of the personal computer 4 is performed. Next, in step S307, the interrupt vector is set to the encoded image data reception, and the encoded image data can be stored in the PC side reception data buffer 250. As a result, 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 reception data buffer 250.

In the PC data recording program, P
The PC data stored in the C-side reception data buffer 250 is decoded. Therefore, the initialization process for one page is performed in S308 of the PC data recording program. The start address of the first page of the encoded image data stored in the PC side reception 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 encoded image data is fetched from the PC side reception data buffer 250 byte by byte, and it is judged whether or not the data fetched in S310 is EOL data. The data of one page starts with EOL data, but unnecessary data other than image data and EOL data may be attached to the beginning of the data, and until EOL data is taken out and one page starts. , S309, S310 are repeatedly executed.

If the EOL data is taken out, the determination result of S310 is YES, and then the RAM of S311.
Among them, the decoding buffer 270 used for the calculation etc. when decoding one line is cleared. Then S312
At, the data is fetched from the PC side reception data buffer 250 byte by byte. The 1-byte data is copied to the decoding buffer 270, and the encoded image data remains in the PC-side reception data buffer 250. When recording is performed based on the decoded image data, the encoded image data is left so that the recording can be performed again even if the recording is interrupted due to a paper jam or the like. This coded image data is erased every time recording of one page is completed.

Next, S313 is executed, and after the retrieved data is decoded, it is determined in S314 whether or not one code is completed. The data of one code may be represented by the number of bits exceeding 1 byte. In that case, the determination result of S314 is NO, and the program execution returns to S312. On the other hand, if the data of one code is completed, the determination result of S314 is YES and S315 is executed to determine whether the extracted data is EOL data. The result of this determination is initially NO, and in S316 it is next determined whether or not it is the end data for one page. Decoding buffer 2
It is determined from the data stored in 70 whether there are six EOL data. The determination result is initially NO, and it is determined whether the data extracted in S317 is image data. A decision is made. The determination result is YES, and the decoded image data of one code is stored in the recording temporary buffer 260 in S318.

As described above, the PC side reception data buffer 25
Data is taken out byte by byte from 0 and decoded, E
If the OL data is obtained, the determination result of S315 is YES, 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 on one page is fetched and the end data on one page is fetched, when the first EOL data out of the six EOL data is fetched, S
The determination result of 315 is YES, and the decoded image data for one line that has been decoded is recorded buffer 262.
Transferred to. At the time of taking out the second to fifth EOL data, the EOL data is neither data indicating the end of one line nor data indicating the end of one page.
5, the determination result of S316 is NO, S31
At 7, it is determined whether the data is image data.
Since it is not image data, the determination result in S317 also becomes NO, and the program execution returns to S312. The EOL data is prevented from being stored in the recording temporary buffer 260.

If 6 pieces of EOL data are extracted, S3
The determination result of 16 is YES, S320 is executed,
The drum motor for rotating the photosensitive drum 30 of the recording device 29 is started, and the ending process for one page is performed. S30
The data set in 8 is cleared. When the data reception for one page is completed in this way, S321
At, the P / S interrupt vector is set to the command reception, and the command is received from the personal computer 4. Then, in steps S322 to S324, the phase D is performed, and if there is the next page data, the program execution returns to step S305 to receive and record the next page data.
The reception of the C data, the (+ FHNG: 0) signal instructing to end 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 interrupt process is executed, and the recording device 29 records one page of data. The encoded image data is erased every time one page of recording is completed.

Next, the case where the facsimile apparatus 2 makes a call by an instruction from the personal computer 4 will be described. If a dial command (ATD + STRING +;) instructing to make a call is sent from the personal computer 4, the screen shown in FIG.
The determination result of S71 of the transmission program shown in 4 is YES, and S77 to S79 are executed. If the dial command does not include valid dial data, the determination result of S79 is NO, the determination result of S85 is YES, S86 and S87 are executed, and the monitoring process is performed. The line is closed, the line status is made known to the operator through the speaker 226, and it is awaited that the line is opened in this state. The line is opened by temporarily picking up the handset 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 determination result in S79 is YES, and S80 to S80.
82 is executed. The determination in S87 is performed if the dial-out processing is performed without any trouble, but the determination result is NO, and in S90, the PC / TEL flag 278 indicating that a call is to be made by the instruction from the personal computer 4 is set.

As a result, the determination result of S351 of the PC / TEL program shown in FIG. 24 becomes YES, and S352
In hang up, that is, it is determined whether or not the handset 11 has been picked up. It is judged whether or not the communication partner is called by sending the dial valid data and the handset 11 is actually picked up and the call is started. If the handset 11 is not picked up and the line is instructed to open, the determination result in S353 is YES, and S
At 363, the line is released and the communication ends.

When the handset 11 is picked up, it is possible to talk with the communication partner. If the start key 162 is pressed while the handset 11 is still picked up, the determination result of S354 is YES. The depression of the start key 162 is an instruction for transmitting or receiving facsimile data, and the facsimile apparatus 2 is pressed in S355.
It is determined whether or not the original 90 is set on
If the original 90 is not set, the start key 16
Depressing 2 means reception of facsimile data transmitted from the other party, and S356 is executed to receive the facsimile data. The reception of this facsimile data will be described later.

If the original 90 is set, the determination result of S355 is YES. In this case, pressing 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 call partner, 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 will not be described.

If the handset 11 is picked up and the start key 162 is not pressed while a call is being made, S
The determination result of 354 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 communication partner, and the PC data is transmitted from the personal computer 4 to the facsimile device 2 in S359.
Sent to the other party. Since this data transmission is performed according to the PC data transmission program described above with reference to FIG. 20, description thereof will be omitted.

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

Then, step S362 is executed to determine whether or not the handset 11 is placed. If the handset 11 is not placed, the program execution returns to step S354. If the handset 11 is placed, the determination result of S362 becomes 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 mode of receiving the facsimile data differs depending on which output mode is selected. When the PC ONLY mode and the PC priority mode in which the personal computer 4 receives the facsimile data are selected, the facsimile device 2 transmits the facsimile data received from the partner device 114 to the personal computer 4. The facsimile data receiving procedure in this case will be described based on the sequence chart shown in FIG.

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

Although a facsimile number is registered in the facsimile device 2, for example, when one facsimile device 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 device 2 and the facsimile number assigned to the user who transmits the data may be different. Therefore, the personal computer 4 tells the facsimile device 2 the facsimile number,
This makes it possible to output a CSI signal described later. The (AT + FLID) signal is output to the facsimile device 2 even when only one type of facsimile number is set for one facsimile device 2.

The personal computer 4 further outputs a signal (AT + FDCC) indicating the level of its own transmission parameter to the facsimile device 2, and the facsimile device 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 device 114, the facsimile device 2 outputs a ring command (RING) to the personal computer 4, and the personal computer 4 outputs the ATA signal to the facsimile device 2 and can receive the facsimile data. Inform that there is. The facsimile apparatus 2 outputs a CED signal and a CSI (Called Subscriber Identification) signal (a called terminal identification signal, that is, a signal representing the number of the facsimile apparatus 2) in response to the transmission of the CNG signal from the partner apparatus 114. Phase A is from the reception of the CI signal to here.

Next, phase B is carried out, and the facsimile apparatus 2 transmits the DIS signal to the partner apparatus 114. The signal exchanged between the facsimile device 2 and the partner device 114 in the phase B is of the same type as the signal exchanged between the facsimile device 2 and the partner device 114 at the time of facsimile data transmission, but the direction is opposite. Since it is only, the description is omitted. In addition, TSI (Transmit S
The “tation Identification” signal is a signal representing the facsimile number of the partner device 114, but is not used in the present facsimile device 2 even if the TSI signal is transmitted,
It is supposed to be discarded as it is. In the interrupt processing program that receives the DCS signal when receiving the facsimile data, no processing is performed even when the TSI signal is transmitted.

In Phase B, the facsimile machine 2
Each time it receives a signal from the partner device 114, it outputs a signal representing the content of the signal to the personal computer 4, and each time it receives a signal from the personal computer 4, it outputs a signal corresponding to that signal to the partner device 114. . Of the signals transmitted from the personal computer 4 to the facsimile device 2, (AT + FDR (FacsimileD
ata Receive)) signal is a signal indicating the start of reception of facsimile data, and the <DC2> signal is a signal indicating that the personal computer 4 is ready to receive facsimile data.

After the transmission of the <DC2> signal, the 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. If the partner device 114 transmits one page of facsimile data, phase D is performed, and the MPS signal, EOP signal or E
The OM signal is transmitted to the facsimile device 2. Also in phase D, the signals exchanged between the facsimile device 2 and the partner device 114 are of the same type as the signals exchanged during facsimile data transmission, but only in the opposite direction. A signal (+ FE) indicating whether or not there is next-page data with the personal computer 4
T: 0), OK command, and (AT + FDR) signal are exchanged. If there is next page data and the transmission parameter is not changed, the process returns to the beginning of phase C to receive the facsimile data. If there is a change in the transmission parameters, the process returns to the beginning of phase B, resets the transmission parameters, and then receives the facsimile data.

If there is no next page data, phase E is performed, the line is opened, 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 to receive the FAX side reception data buffer 2
54. Further, the facsimile apparatus 2 transmits the facsimile data in the FAX side reception data buffer 254 to the personal computer 4 by interruption.

These interrupt processings are the image data receiving modem interrupt processing program shown in FIG. 26, the FAX data receiving command receiving modem interrupt processing program shown in FIG. 27, and the FAX data receiving shown in FIG. 28, respectively. Hour command output modem interrupt processing program, FIG. 29
This is performed based on the FAX data reception P / S interrupt processing program shown in FIG. Further, at the time of receiving the facsimile data, the facsimile device 2 receives the data from the personal computer 4 based on the FAX data receiving data reception P / S interrupt processing program shown in FIG. When the facsimile data is received, commands are transmitted and received between the facsimile device 2 and the personal computer 4 in the same manner as when the facsimile device 2 receives the PC data.
The description is omitted because it is performed based on the program shown in FIG.

The FAX data reception image data reception modem interrupt processing program shown in FIG. 26 is executed every time facsimile data is stored in the modem reception data buffer 239. After 1 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 8 bit data are 0. Done. If it is image data, S372
The result of the determination is NO, and after the 0 data counter 342 is reset in S373, the F data is reset in S374.
The data is stored in the AX side reception data buffer 254.

Next, S375 is executed and the 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 the sixth wobbling data representing the N data has been stored. RTC PATTERN
If the data has been completed, S376 is executed, and the interrupt vector is set for receiving a subsequent command.

If the data fetched from the modem reception data buffer 239 is 0 data, the determination result in S372 is YES, and in S377, the 0 data counter 3
The count value C of 42 is incremented by 1. Then S37
8 is executed, and it is determined whether 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. 2 consecutive 0 data
If more than one data has been extracted, the determination result in S378 will be NO, and the second and subsequent zero data will not be stored in the FAX side reception data buffer 254.

For example, the EOL signal is composed of 11 pieces of 0-bit data and 1 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. The data is stored in the side reception data buffer 254.
When 0 fill data is inserted to keep the minimum transmission time of one line as described above, two or more 0 data may be extracted. Such 0 data is FAX
It is not necessary to store it in the side reception data buffer 254, and if the count value C ₂ is 2 or more, the execution of the program ends as it is. If the image data is extracted after the 0 data, the determination result of S372 is NO, and the 0 data counter 342 is reset in S373.

The FAX data reception command reception modem interrupt processing program and the FAX data reception command output modem interrupt processing program are set in plural types in accordance with the types of commands received and output by the facsimile apparatus 2, respectively. Has been done. 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. In addition to performing the process of outputting the next command, or setting the interrupt vector for receiving the next command, the interrupt processing program for outputting the command outputs a predetermined command 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 CFR signal is output 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 receives 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 the command is transmitted thereby, S381 is executed and the TCF signal is received. S381 and S382 are repeatedly executed until the reception of the TCF signal is completed, and when completed, the determination result of S382 becomes YES, and in S383, it is determined whether or not the training check is performed well. 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 the output of the CFR signal in S384, the execution of the data transmission interrupt process is permitted in S385. .

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

The interrupt processing program shown in FIG. 28 is CF
This is a program for outputting the R signal, which can be executed by setting the interrupt vector 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 in step S402 to a vector instructing the image data reception modem interrupt processing program during FAX data reception, and image data is received. Then S40
In 3, the execution of the data transmission interrupt process is prohibited and only the image data is received.

In S421 of the FAX data reception image data transmission P / S interrupt processing program 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 of S421 is NO, and it is determined in S422 whether or not data is stored in the PC side transmission data buffer 252, and if there is data, S42.
The determination result of 2 is YES, and one byte of data is taken out from the PC side transmission data buffer 252 in S423. Then, in S424, the data is <DLE>.
It is determined whether or not it is data, and if it is image data, the determination result of S424 is NO and S426 is executed, and the retrieved data is the P / S transmission data buffer 2
Stored in 48.

If the fetched data is <DLE> data, the determination result in S424 is YES, and the DLE flag 272 is set in S425. for that reason,
Next, when the determination of S421 is performed, the determination result is Y.
After the status becomes ES and the DLE flag 272 is reset in S427, <DL is set in the register in S428.
E> Data is written and stored in the P / S transmission data buffer 248 in S426. This is because, unlike the other data, the <DLE> data is set so that the personal computer 4 cannot recognize it as the <DLE> data unless the data is output twice.

Further, although there is no data in the PC side transmission data buffer 252 even though the image data transmission P / S interrupt processing program at the time of FAX data reception is started, it is abnormal. 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 extracts one byte of data from the P / S reception data buffer 246 in S431, and then in S432, sets the data to <DC.
2) It is determined whether or not it is either the data or the <CAN> data. Facsimile device 2 is partner device 1
When the facsimile data is received from 14 and transmitted to the personal computer 4, the data transmitted from the personal computer 4 is 2 above.
It should be the data of the type, if it is other data, it is discarded as it is, and if it is the above two types of data,
In step S433, the reception preparation completion flag 280 or the cancellation flag 274 is set.

Reception of facsimile data will be described with reference to FIG. First, in S501, it is determined whether or not the facsimile data has arrived, based on the FAX incoming determination program shown in FIG.

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

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

If the handset 11 is picked up, the determination result in S603 is YES, and in S604, it is determined whether or not the start key 162 is pressed. When picking up the handset 11, no voice is heard, and when a signal such as a CNG signal transmitted from the partner device 114 at the time of transmitting facsimile data is heard, it is understood that the facsimile data is transmitted, and the start key 162 is transmitted. Press to instruct to receive facsimile data. As a result, the determination result of S604 becomes YES, and the FAX incoming flag 282 is set in S605.

Unless the handset 11 is picked up, the facsimile data cannot be received even if the start key 162 is pressed. This is because 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 the start key 162 is not pressed, S
The determination result of 604 is NO, and it is determined in S606 whether the handset 11 is placed. Handset 11
If is not placed, the determination result of 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 call is made, and if the call ends, the handset 11 is placed, so the determination result in S606 is YES, the line is opened in S607, and the program Execution ends.

If the incoming mode is not the MANUAL mode, the determination result in S601 is NO, and it is determined in S608 whether or not it is the AUTO mode. AUT
If it 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 detected, 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 the call has been made N times. The number of calls N is preset and RO
Stored in M, if the call is made N times, S610
Is YES, and the FAX incoming flag 282 is turned ON in step S611.

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

FAX reception judgment in the FAX reception judgment program in the F / T mode will be briefly described in association with step numbers. In the F / T mode, the CI signal is detected (S701), and after calling is performed N times (S70).
2), when the CNG signal is detected (S703), when there is a remote start (S704), after calling N times,
When 4 seconds have passed and 20 seconds have passed without further withdrawal of the handset 11 or termination of communication of the partner device 114 (S708 to S713), the handset 11 was picked up within 20 seconds, but the start key 162 When the reception of the facsimile data is instructed by pressing the button, it is determined that the facsimile data is transmitted (S714).

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

If four seconds have elapsed after calling N times, the flag A is set. Therefore, it is determined whether 20 seconds have elapsed since S709 to S711 are skipped.
During this time, if a busy tone is detected and it is detected that the communication partner has terminated the communication, the flag A and the timer are reset and the line is opened (S705 to S70).
7).

If the CNG signal is detected or remote activation is performed without the communication partner terminating the communication and the handset 11 is not picked up, or if 20 seconds has elapsed, it is determined that the facsimile data has been transmitted. , Timer and flag A are reset and F
The AX incoming flag 282 is set (S715, S7
16).

When the handset 11 is picked up before it is judged that the facsimile data is transmitted, if the telephone signal is transmitted, the operator talks with the communication partner and the handset 11
Is set, the flag A is reset and the line is opened (S717 to S719). Also, the handset 1
When 1 is picked up but no voice is heard and the facsimile data is transmitted, the start key 162 is pressed, the timer and the flag A are reset, and the FAX incoming flag 282 is set (S713-).
S717).

[0227] The incoming mode is not the F / T mode, but TA
In the D mode, the determination result of S612 of the FAX incoming determination program shown in FIG. 32 is NO, the determination result of S614 is YES, and the TAD shown in FIG.
In the mode, the FAX incoming determination program is executed. TA
In the D-mode FAX incoming call determination program, the CI signal is detected when the FAX incoming call is detected (S75).
1) After calling N times (S752), CNG
This is when a signal is detected (S753), when remote activation is performed (S754), or when no voice is detected for 8 seconds after the output of the response message (S76).
6).

In the TAD mode, a response message prompting the recording of a message is transmitted from the external answering machine 190 to the communication partner. The end of this response message can be detected by the lapse of 15 seconds after the lapse of 4 seconds after calling N times (S760 to S763), and after the lapse of 15 seconds, the timer is set again for 8 seconds. The progress is measured (S764 to S766). Flag A if 4 seconds have passed
Is set and the timer is made to measure the elapse of 15 seconds (S762), and if 15 seconds elapse, flag B is set.
Is set, and the timer measures the elapse of 8 seconds (S764).

During this period, if voice is detected, it is determined that the signal transmitted 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 is opened. Then, the communication ends (S774 to S776).

If the handset 11 is picked up while the FAX incoming call is being determined, a telephone call is made, and if it is not a telephone signal, the start key 162 is pressed to receive the facsimile data (S767 to S773).

When the incoming mode is set to the MC mode, the determination result of S614 of the FAX incoming determination program shown in FIG. 32 becomes NO, and the MC incoming FAX incoming determination program shown in FIG. 35 is executed in S616. . In the MC mode, a fax incoming call is determined when the CI signal is detected (S801), the call is made N times (S802), and the CNG signal is detected (S803) when remote activation is performed. (S80
4) After output of the response message, when no voice is detected for 8 seconds (S817), voice is detected, and when 30 seconds have elapsed since recording was started (S827), the handset 11 was picked up. Is when the start key 162 is pressed (S818, S819).

Only the processing when voice is detected and recording is different from that in the TAD mode will be described. Recording is started if voice is detected (S816, S82).
5, S826), if the communication partner ends the communication before 30 seconds have elapsed, the communication is ended by executing S805 to S807. If 30 seconds elapse without communication being completed, FA
It is determined that there is an X incoming call. However, for example, even when the facsimile data is being transmitted, it may be determined that there is voice due to the occurrence of noise. In such a case, the facsimile data may be received. Because it is necessary.
If a voice signal is actually being transmitted, a facsimile signal such as a CNG signal is transmitted to the communication partner during the subsequent procedure for receiving facsimile data, so the partner should end the communication. You can

After the FAX incoming call is determined in this way, S502 of the receiving program shown in FIG. 31 is next executed to determine whether or not it is a FAX incoming call. This determination is made based on whether or not the FAX incoming flag 282 is set. If it is a telephone and facsimile data is not transmitted, the FAX incoming flag 282 is not set, and the determination result in S502 is NO and the program Execution ends.

FAX data transmission by FAX
If the incoming flag 282 is set, the determination result of S502 is YES, and in S503, it is determined whether or not data transmission to the personal computer 4 is possible. This determination is made depending on whether the interface box 6 is connected. Whether or not the interface box 6 is connected can be known 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 determination result of S503 is NO and S513 is executed to determine whether or not recording is possible.

Whether or not recording is possible is determined by the recording paper 1
7 and whether there is a sufficient amount of toner for recording. The presence or absence of the recording paper 17 is determined by the recording paper sensor 2
It can be seen from the detection signal of 0, and the presence or absence of toner can be seen from the detection signal of the toner remaining amount detecting device 80. If recording is possible, the determination result of S513 is YES, and the paper output flag 284 is set in S514. If it is not recordable, the determination result of 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 it is determined in S504 whether the output mode is the paper output mode. In the paper output mode, the determination result of S504 is YES, S513 is executed, 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 it is not the paper output mode, it is the PC / ONLY mode or the PC priority mode in which the personal computer 4 receives the facsimile data, and the 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) is set.
Within a second), it is determined whether or not there is a response to the ring command from the personal computer 4. The response in this case is the ATA signal as described above based on the sequence chart shown in FIG. 25, and if there is a response within 3 seconds, S50.
The determination result of 7 is YES, and the PC transmission flag 288 is set in S512. It is stored that the personal computer 4 can receive the facsimile data.

For example, when the personal computer 4 is executing a program having a long execution time, it cannot respond to the command transmitted from the facsimile apparatus 2,
Nor can it receive facsimile data. Therefore, in this case, the determination result of S508 is YES,
In S509, the PC transmission flag 288 is reset. It is stored that the personal computer 4 cannot receive the facsimile data.

As described above, even if the output mode of the personal computer 4 is set to the PC / ONLY mode or the PC priority mode in the facsimile device 2, if the receiving function is not selected in the personal computer 4, the receiving program will not be executed. It is not executed, the facsimile data cannot be received, and even if the facsimile device 2 outputs the ring command to the personal computer 4, the ATA signal cannot be output to the facsimile device 2. Therefore, even in this case, if there is no response from the personal computer 4 for 3 seconds, S
The determination result of 508 is YES, and P is set in S509.
The C transmission flag 288 is reset.

The ATA signal is such that the interface box 6 is not connected, the power of the personal computer 4 is turned off, there is no room to store the data in the capacity of the facsimile data buffer 328 of the personal computer 4, and the program for receiving the facsimile data in the personal computer 4 That it is not running,
This is issued when there is no cause for not being able to receive the facsimile data, such as the fact that a program other than the facsimile data receiving program is being executed on the personal computer 4 and the facsimile data cannot be received. It is a signal.

Then, step S510 is executed to determine whether the output mode is the PC / ONLY mode.
If it is the PC priority mode, the determination result of S510 is NO, and S513 is executed. In the PC priority mode, when the personal computer 4 cannot receive the facsimile data, the recording device 29 of the facsimile device 2 records and outputs the facsimile data.
Facsimile data is stored in the AX side reception data buffer 254.

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

As is clear from the above description, the paper output flag 284 is set when the paper output mode is set, regardless of the output mode, the personal computer 4 is not connected and recording is possible. In this case, although the PC priority mode is set, the personal computer 4 cannot receive the facsimile data and can record the facsimile data when the facsimile data arrives. When the paper output flag 284 is set, the received facsimile data is recorded in parallel with the reception from the beginning to the end (S526). Further, the proxy flag 286 is set 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, but the facsimile data is received. When the personal computer 4 cannot receive the facsimile data, the PC priority mode is set, but when the personal computer 4 receives the facsimile data, the personal computer 4 cannot receive the facsimile data and cannot record the facsimile data. 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. The paper output mode is selected, but the recording device 29 cannot record, and the FAX side reception data buffer 254
Storing data in is also a type of interception (S
525). When the PC / ONLY mode is set and the PC 4 cannot receive, or the PC priority mode is set and the PC 4 cannot receive,
In addition, when recording is not possible, that fact is displayed on the display device 150. Neither the paper output flag 284 nor the proxy flag 286 is set because it is PC / ONLY.
In the mode or the PC priority mode, the personal computer 4 can receive the facsimile data, and the facsimile data is transmitted to the personal computer 4 in parallel with the reception (S524).

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

The DIS signal is a signal for notifying the partner device 114 of the level of the transmission parameter of the facsimile device 2 as described above, and may differ depending on whether the facsimile data is received by the facsimile device 2 or the personal computer 4. 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 device 2 receives the facsimile data. Therefore, the determination result of S841 is YES.
Then, S845 is executed, and among the transmission parameters such as the resolution, paper width, and encoding method of the facsimile apparatus 2,
A DIS signal indicating the highest level is created, S84
4 is stored in the FAX side transmission data buffer 256.

If the paper output flag 284 is not set, the determination result of S841 is NO, and it is determined in S842 whether the proxy flag 286 is set. Since the proxy flag 286 is set to indicate that the facsimile data is stored in the FAX-side received 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 the facsimile data. Therefore, S
In 843, a DIS signal which is common to the transmission parameters of the personal computer 4 and the transmission parameter of the facsimile apparatus 2 and notifies the partner apparatus 114 of the highest level transmission parameter is created, and the FAX side transmission data buffer 256 is stored in the FAX side transmission data buffer 256 in S844. Written. PC 4
Of the transmission parameters of the PC transmission parameter buffer 263
A DIS signal is created on the basis of the transmission parameter stored in the FAX transmission data buffer 2 and the transmission parameter of the facsimile apparatus 2.
56.

Next, S516 is executed, the P / S interrupt vector is set to command reception, and the command transmitted from the partner device 114 in phase B, including the V21 flag, is received.

Then, S517 to S519 are executed,
It is determined whether or not the V21 flag has been transmitted from the partner device 114 within the set time. The V21 flag is a command sent when data is transmitted between the facsimile devices, and if it is not present, it means that not telephone data is transmitted but telephone signal transmission or some abnormality. Therefore, even if the set time elapses, V21
If the flag is not obtained, the determination result of S519 is YES, and error processing is performed in S531. A (+ FHNG: 2) signal is output to the personal computer 4 to notify that the communication will be terminated due to the occurrence of an error.
2 paper output flag 284 and proxy flag 286
The communication is ended by resetting and opening the line.

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

After executing the phase B, it is determined in S521 whether or not there is an error. The error is D
The CS signal cannot be received, or the data cannot be received at the command transmission speed of 2400 bps. When an error occurs, S521
Is YES, the error processing of S531 and S
For example, if the line is opened in 532, the determination result in S519 is Y.
It is performed in the same manner as when ES is set.

If there is no error, the determination result of S521 is N.
The output becomes O, and thereafter, in response to the setting and resetting of the paper output flag 284 and the proxy flag 286, paper output for recording the facsimile data on the recording paper 17 (S526), and the facsimile device 2 receiving the facsimile data in place of the personal computer 4. Proxy reception (S525) and PC reception for causing the personal computer 4 to receive facsimile data (S524)
Is executed.

PC reception will be described based on the program shown in FIG. Since the storage of the encoded image data transmitted from the partner device 114 in the FAX side reception data buffer 254 and the transmission to the personal computer 4 are both performed by interruption, some programs transmit the encoded image data to the PC side. Writing to the data buffer 252, decoding of encoded image data, and data transmission of one line are checked.

First, in S851, the P / S interrupt vector is set for data transmission. Then S852 to S8
54 is S30 of the PC data recording program shown in FIG.
This is executed in the same manner as 8 to S310, and EOL data indicating the beginning of the data of one page is searched.

When the EOL data is obtained, the determination result of S854 is YES, and the count value of the line counter 344 is incremented by 1 in S855. When data is transmitted from the facsimile device 2 to the personal computer 4, the number of data lines is also transmitted, and the number of lines is counted here. The number of lines also determines the resolution of the data and the paper width of the facsimile device 2 to the personal computer 4
It is also used to correct the display resolution and paper width.

In step S856, the decoding buffer 270 is used.
Is initialized in the same manner as S311 in FIG. 23, and then S8.
57 is executed, and one byte of data is fetched from the FAX side reception data buffer 254. In S857, the data is taken out 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 or not the facsimile data can be transmitted to the personal computer 4.

This determination is made depending 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 inhibiting data transmission. If the facsimile data buffer of the personal computer 4 is already full of data and no more data can be stored, or if the personal computer 4 is executing a program that cannot receive the facsimile data, Is not executed, the power of the personal computer 4 is off, and the interface box 6 is not connected, the CTS control signal line is output by the facsimile device 2 to the personal computer 4. Being blocked. The output of the CTS control signal line is a facsimile data transmission permission signal when the facsimile data transmission is permitted, and is a facsimile data transmission prohibition signal when the facsimile data transmission is inhibited.

This state does not continue for the set time (3 seconds in this embodiment), and within 3 seconds, the output of the CTS control signal line is in a state in which the data transmission is permitted, and the information that the facsimile data can be transmitted is given. If it is obtained, the determination result of S860 becomes YES, and the facsimile data of 1 byte is sent to the PC side transmission data buffer 25 in S863.
Stored in 2. 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 taken out in S865 is decoded according to the decoded image processing program, and then S866.
At, it is determined whether the decoding of one code is completed. When one code is composed of 2 bytes or more, the determination result of S866 is NO, S857 is executed, and the next data is fetched from the FAX side reception data buffer 254.

If the data of one code is taken out, S8
At 67, it is determined whether the retrieved data is EOL data representing the end of one line. This determination result is initially NO, and it is determined in S868 whether or not the data is an instruction to end one page. The determination result is also NO, and the data extracted in S869 is image data. Whether or not there is is determined. If it is image data, S870 is executed and the bit number of the decoded image data is the image data bit number counter 3
After being added to the count value of 46 and the number of bits of the image data of one line is counted, the program is executed in S857.
Then, the next data is taken out and written to and decoded in the PC side transmission data buffer 252.

If the extraction and transmission of the data of one line is completed without the data transmission to the personal computer 4 becoming impossible, the determination result of S867 becomes YES, and the data of one line from the partner device 114 is obtained in S871. Is transmitted. In this determination, the number of bits added in S870 is the number of bits included in one line of the paper width set between the facsimile device 2 and the partner device 114 (for example, 172 when the paper width is A4).
8 bits, and in the case of B4, 2048 bits). If the facsimile data is disturbed due to disturbance or the like and the number of bits is more or less than the set number of one line, the determination result of S871 is NO, and S871
At 872, the count value of the error line counter 348 is incremented by 1.

Although not shown, the number of error lines counted by the error line counter 348 is processed as follows. After receiving the encoded image data of one page, by executing the error processing program in phase D,
If it is determined that the number of error lines has exceeded a preset rate (for example, 10%), RTN (Re
train Nagative) signal was output and the image data was not completely received, but if the training or synchronization signal is retransmitted, it is possible to receive the image data of the next page. In addition, the rate at which the number of error lines is greater than the rate for determining whether to output the RTN signal (for example, 30
%), The DCN signal is output and the communication is terminated.

If the number of bits of the transmitted data is one line, the determination result of S871 is YES, the program execution returns to S855, and the encoded image data of the next line is transmitted and checked. .

The data representing the end of one page includes 6 pieces of EOL data, and when the first piece of EOL data is taken out, the determination result of S867 is YES, and S87.
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 of S867 and S868 are both NO, and are not image data. The determination result of S869 is NO, and the execution of the program returns to S857. Since it is not image data, the number of bits is not added. If 6 pieces of EOL data are extracted, the determination result of S868 is YES, and S87
In 3, it is determined whether the PC transmission flag 288 is set.

If the PC transmission flag 288 is set, it means that all the data of one page has been sent to the personal computer 4, and the data stored in the FAX side reception data buffer 254 may be erased. Therefore, S873. If the result of the determination is YES, S880 is executed and an instruction to erase the data for one page stored in the FAX-side received data buffer 254 is instructed. As a result, one page of data sent to the personal computer 4 is erased by a program (not shown). Next, in S875, the one-page ending process is performed, that is, the data set in the one-page data buffer 277 in S852 is erased. In S875, the P / S interrupt vector is set for command reception, and the count value of the line counter 344 is decremented by 1. When the first EOL data forming the RTC PATTERN data is taken out, S
In 872, the count value of the error line counter 344 is incremented by 1, but since this does not represent the number of lines, it is decremented by 1.

The output of the CTS control signal line continues for more than 3 seconds to prevent the data transmission, and the personal computer 4
S if the facsimile data cannot be sent to
The determination result of 861 is YES, and in S862, P
The C transmission flag 288 is reset. As a result, thereafter, no data is written in 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 during image data reception are stored in the FAX-side reception data buffer 254 so that the transmission parameters of the received facsimile data can be known. Further, either one of the PC / ONLY mode period line reception flag 296 and the PC priority mode period line reception flag 296 is set, and it is stored in which mode the substitute reception is performed. At this time, all flags other than the flag indicating the output mode at the time of proxy reception are reset. In this way, the PC 4 is in the middle of transmitting the facsimile data to the PC 4.
When it becomes unreceivable, in the PC / ONLY mode, the display 150 indicates that it is in the PC / ONLY mode and cannot be transmitted.

In the PC / ONLY mode or the PC priority mode, if the personal computer 4 cannot receive data while receiving facsimile data, the personal computer 4
Data is not sent to, but data is decrypted,
It is determined whether or not the data for one line has been transmitted without excess or deficiency.

[0268] When the decoding of the data of one page is completed, S868
The determination result of is YES. In this case, since the PC transmission flag 288 has been reset, the determination result in S873 is NO, and in S875, the ending process for one page is performed. When it is determined that the data transmission to the personal computer 4 is impossible, the facsimile data is later transmitted to the personal computer 4.
Since it is transmitted to each page in one page, it is necessary to retain the data for one page, and S874 is not performed. In the PC / ONLY mode, the encoded image data after the personal computer 4 becomes unreceivable is stored in the FAX side reception data buffer 254. In addition, even in the PC priority mode, the received facsimile data is transmitted to the personal computer 4 page by page.
Since data is recorded in page units, all data for one page is FAX.
It is left in the side reception data buffer 254. When the coded image data is recorded, it is erased every time one page is recorded.

Next, the proxy reception in S525 will be described. The proxy reception is performed when 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, and the proxy reception program shown in FIG. 38 sets the interrupt vector to data transmission in the PC reception program shown in FIG. 37. , A step of determining whether or not data can be sent to the personal computer 4, a step of erasing data, a temporary recording buffer 260, a recording buffer 26
Since the storage of data in 2 is excluded, the description is omitted. In the case of proxy reception, the transmission parameter is attached to the data stored in the FAX side reception data buffer 254 at the time of the one-page end processing in S915 so that the transmission parameter of the coded image data received by proxy can be known. To be done. In step S915, any one of the paper output mode historical line reception flag 292, the PC / ONLY mode historical line reception flag 294, the PC priority mode historical line reception flag 296 is set, and the proxy reception is performed in any output mode. I was remembered. Flags other than the flag for storing the output mode at the time of proxy reception are reset.

Next, the paper output of S526 will be described based on the paper output program shown in FIG. Paper output is performed when the paper output flag 284 is set,
All the facsimile data is recorded by the recording device 29. Therefore, the paper output program shown in FIG. 39 decodes all received data and stores it in the recording buffer 262, and when the decoding of one page is completed, the photosensitive drum 30
It is supposed that the drum motor for rotating the device is activated to cause the recording device 29 to record data for one page (S96).
7). Others are the same as the substitute reception program shown in FIG. 38, and the description thereof will be omitted.

When the encoded image data for one page is processed in this way, phase D is performed in S527 of the reception routine shown in FIG. Next, S528 is executed, and it is determined whether or not there is an error, that is, whether or not the MPS signal, the EOM signal, or the EOP signal can be received from the partner device 114. Although illustration is omitted, this determination is made within the set time by the MPS signal, EOM signal or EO.
This is performed depending on whether or not the P signal is obtained, and if not obtained, the determination result of S528 is NO, and error processing is performed in S531. To PC 4 (+ FHNG: 2)
The signal is output.

If there is no error, the determination result of S528 is N.
It becomes O, and it is judged in S529 whether or not the communication is 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.
Then, in S530, it is determined whether or not the transmission parameter is changed. This determination is made based on whether or not the EOM signal indicating the change of the transmission parameter has been transmitted from the partner device 114. If there is no change, the program execution returns to S522, and the same transmission parameter as that at the time of receiving the previous facsimile data. Then, the facsimile data of the next page is received. If there is a change, the program is executed in S51.
5, the transmission parameters are reset between the facsimile device 2 and the partner device 114, and the facsimile data is received. The transmission parameters are stored page by page in the transmission parameter buffer 290 at the time of image data reception regardless of whether the transmission parameters are changed.

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

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

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

In the paper output mode, the determination result of S1004 is YES. In the paper output mode, the reception data is present when it is impossible to record, and S100
In 5, it is determined whether or not recording is possible. If it is not recordable, the determination result of 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 historical line reception flag 294 is reset when all recording is completed.

If it is not the paper output mode, the determination result of S1004 is NO, and after the timer is set in S1007, S1008 is executed and the ring command is output to the personal computer 4. Next, in S1009, it is determined whether or not 5 seconds have elapsed since the ring command was output. The determination result is NO, and in S1010, it is determined whether or not data can be transmitted to the personal computer 4. Be seen. This determination is made based on whether or not there is a response from the personal computer 4, that is, whether or not the ATA signal is transmitted.

Until the ATA signal is obtained or 5 seconds elapse without being obtained, S1001 and S10
02, S1009, and S1010 are repeatedly executed. 5
If the ATA signal is not obtained even after the elapse of seconds, S100
After the determination result in 9 is YES and the timer is reset in S1011, it is determined in S1012 whether or not the output mode when the proxy reception is performed is the PC / ONLY mode. This judgment is PC / ONLY
This is performed depending on which of the mode time line reception flag 294 and the PC priority mode time line reception flag 296 is set. If it is the PC priority mode, the determination result in S1012 is NO, it is determined in S1013 whether or not recording is possible, and 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 receiving program shown in FIG. 38,
Even when the personal computer 4 receives the proxy data because it cannot receive the facsimile data while the facsimile data is being transmitted to the personal computer 4 by the PC reception program shown in FIG. 37, the decoded image data is stored in the recording buffer 262. Has not been stored and is decrypted at the time of recording in S1015.

If recording is not possible, the determination result in S1013 becomes NO, the flag E is set in S1014, and the execution of the program ends. In addition, the display 150
Is displayed in the PC priority mode indicating that recording is impossible. When S1003 is executed next, the determination result is YES and S1012 is executed. Until recording is possible, S1001 to S1003, S1012, S
1013 is repeatedly executed.

As described above, in the PC priority mode, it is determined whether or not the personal computer 4 is receivable only once after the substitute reception is completed, and if it is not possible, the personal computer 4 is recorded. In this case, the PC priority mode period line reception flag 296 and the flag E are reset when all the coded image data received as a substitute is recorded.

If it is the PC / ONLY mode, S101
The result of the determination of 2 is YES, and after the flag E is reset in S1036, the execution of the program ends. When the proxy reception data processing program is executed again, the 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 the output state of the control signal line determines whether or not the power source of the personal computer 4 is OFF and whether or not the memory capacity of the personal computer 4 is full, the two cannot be distinguished from each other. OF
In the case of F, the ring command continues to be output.

If the ATA signal is obtained within 5 seconds after the ring command is output, the determination result of S1010 is YES.
Then, after the timer is reset in S1016, it is determined in S1017 whether the transmission parameters of the personal computer 4 and the transmission parameters of the data stored in the FAX side reception data buffer 254 match.

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

When the transmission parameter of the personal computer 4 and the transmission parameter of the data stored in the FAX side reception data buffer 254 are different, the determination result of S1017 is NO. If the interface box 6 is not connected, or if the personal computer 4 cannot receive the facsimile data from the beginning of the reception of the facsimile data and the data is intercepted, the transmission parameters are set between the facsimile device 2 and the partner device 114. Since it is set, it may differ from the transmission parameters of the personal computer 4.

In this case, if it is determined in S1018 that data can be transmitted to the personal computer 4, S10 is executed.
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, and in S1020, the PC side transmission data buffer It is written in 252 and transmitted to the personal computer 4. For example, the highest level of the transmission parameter between the partner device 114 and the facsimile device 2 is that the resolution is Superfine, the encoding method is the MMR method, and the paper width is B4.
When the facsimile data is transmitted, data having a fine resolution, an MH encoding method, and a paper width A4 is created and transmitted to the personal computer 4.

The facsimile device 2 and the partner device 11
4 is lower than the maximum level of the transmission parameters of the personal computer 4, the partner device 11
4 is included in the transmission parameter level of the personal computer 4, the transmission parameter levels are considered to match, and the determination result in S1017 is YES, and the received facsimile data is It is sent to the personal computer 4 as it is. When the encoded image data is transmitted to the personal computer 4, after all the data is transmitted, the PC / ONLY mode historical line reception flag 294 is sent in S1035.
The PC priority mode historical line reception flag 296 is reset.

After the data is written in 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 or not the <DLE> and <ETX> data has been written in the PC side transmission data buffer 252. If the data for one page has not ended, the determination result in S1021 becomes NO and the program is not executed. It returns to S1018.

If the data of one page has been completed, the determination result in S1021 is YES, and it is determined in S1022 whether the data has been completed, that is, whether all the data has been sent to the personal computer 4. If the data is not finished, S1
The determination result of 022 is NO, and the execution of the program is S
Returning to 1017, the transmission parameter on the next page is the personal computer 4
It is determined whether or not they match the transmission parameter of S1027 to S1033. And
If all the data is transmitted, the determination result of S1022 is YE.
Then, the program execution ends.

During data transmission, it is determined whether data transmission to the personal computer 4 is possible or not in S1018 and S1023.
It is performed in S1025, and if transmission is impossible, S10.
The determination result of 25 is YES, and after the timer reset or the like is performed in S1026, S1001 is executed again.

The display on the display unit 150 indicating that the PC 4 cannot receive data in the PC / ONLY mode and that the PC 4 cannot record in the PC priority mode enables the PC 4 to receive data in the former case. In the latter case, the latter is erased when the recording by the recording device 29 becomes possible.

When the output mode is changed after the facsimile data is stored in the FAX-side reception data buffer 254 by the alternate reception, the alternate received facsimile data is output according to the changed output mode. If the output mode is changed, paper output mode historical line reception flag 292, PC / ONLY mode historical line reception flag 294, PC priority mode historical line reception flag 296
Is 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 PC / ONLY mode is changed to the paper output mode, the determination result of S1004 is YES, and the facsimile data is recorded. Thereby, for example, when the personal computer 4 fails 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 paper output mode is changed to the PC / ONLY mode, S
The determination result of 1004 is NO, the determination of S1012 is Y
A ring command is issued until the ES is set and the personal computer 4 can receive the facsimile data. Furthermore, P
If the C priority mode is changed to the PC / ONLY 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 at the time of outputting the first ring command and the recording is impossible, the PC / ONLY mode is awaited when the recording is possible. If it is changed to, the determination result of S1012 becomes YES and S1
At 036, the flag E is reset, the determination result of S1003 becomes NO, the ring command is output again, and the facsimile data can be transmitted to the personal computer 4.

Next, reading of an original and sending of image data in the facsimile apparatus 2 will be described. However, the procedure when the document is read by the facsimile device 2 and the image data is sent to the partner device 114 is well known and is not necessary for understanding the invention of the present application. Omit it, and as above,
Only the case where the reading function is selected on the personal computer 4 will be described. If reading is instructed by the personal computer 4 while the facsimile device 2 is in the idle state, S
The determination in 2050 is YES, and S2100 and subsequent steps are executed.

FIG. 41 shows a sequence chart in this case.
Shown in. Since this procedure is almost the same as the above-mentioned reception, detailed description will be omitted and only different parts will be described. In Phase B, LINE OPEN means that the external line 224 between the facsimile apparatus 2 and the partner apparatus 116 is opened when the personal computer 4 instructs reading. Also,
In phase C, while the original 90 is being read by the image reading device 42 in the facsimile device 2, R
The TS control signal is set to a state of preventing the PC data from being transmitted from the personal computer 4, and when the transmission is started, the RTS control signal is set to a state of permitting the PC data to be transmitted. Further, when a device error such as a jam of the original document 90 occurs during reading, an error command (+ BRNG: “DOCUMENT JAM”) indicating the error is output to the personal computer 4, but the cause of the error is removed. If so, reading is resumed.

In this embodiment, reading and sending of a part of a series of originals are alternately performed. As will be 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 is below 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 image data transmission is started. Then, when the transmission of the encoded image data of the portion read so far (hereinafter, referred to as transmitted encoded image data for distinguishing from the read image data) to the personal computer 4 is completed, the image reading device 42 again causes Reading is started. Thereafter, reading and sending are repeatedly executed in a time-division manner until the sending of the image data corresponding to the entire series of originals to the personal computer 4 is completed. If the reading is interrupted because the continuous reading time by the image reading device 42 exceeds the set time, the encoding is performed in parallel with the sending.

In step S2100, the process in phase B is performed, and in step S2200, the image reading device 42 is initialized. When the reading of the original 90 is started, necessary processing, for example, feeding to the reading position of the original 90 is performed. In that case, if there is no original 90 to be sent and the original 90 is not set on the original table 94, the determination in S2300 is NO, and S231.
At 0, an error command (+ BRNG: “NO DOCUMENT”) indicating that the original document is not set is output to the personal computer 4, and at S2320, in addition to the error processing similar to the error processing at S531, the termination processing of the image reading device 42, etc. Is done. The processing including the error processing in S531, the termination processing of the image reading device 42, and the like are referred to as the error processing in phase B.

If there is a document 90 to be sent, the determination in S2300 is YES, and it is determined in S2400 whether a communication error has occurred. If a communication error occurs and the determination result of S2400 is YES,
Error processing in phase B is performed. In the present embodiment, the presence / absence of a communication error, the set state of the cancel flag 274, the pressing of the stop key 164, etc. are detected only at predetermined steps. When the press of the stop key 164 is detected, the buzzer is operated in S2810, and in other cases, the error processing of S2320 is directly performed. Phase B,
When an error or the like is detected in D and E, the same process as the error process in the above-mentioned phase B is performed. Error processing is performed.

As described above, the communication error is the cable between the facsimile machine 2 and the interface box 6 when it is detected that the CTS control signal is in the state of blocking the data transmission from the facsimile machine 2. It is considered to have occurred when, for example, it is detected that the is disconnected. The depression of the stop key 164 is detected based on a stop key depression flag (not shown). When the stop key 164 is pressed, an operation panel control device (not shown) provided on the operation panel 12 sets a stop key pressing flag, and a signal indicating the state of the flag is supplied to the control device 40.

At S2500, an interrupt vector is set. At the address designated by the interrupt vector, the clock input / output terminal, which is the 47th terminal of the CPU 200, is switched, the frequency of the clock supplied to the serial / parallel conversion circuit 240 is set, and the data transmission interrupt prohibition flag 244 is switched. A transmission setting program for instructing etc. is 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-mentioned three conditions is satisfied.

The switching of the clock input / output terminals is performed by a multiplexer, and the D
The MAC 208 is switched to the serial / parallel conversion circuit 240. The transmission rate, that is, the image data sending rate is determined by the frequency of the clock supplied to the serial / parallel conversion circuit 240. Further, the data transmission interrupt prohibition flag 244 is switched from the transmission prohibited state to the transmission permitted state, which allows the execution of a FAX data reading image data transmission P / S interrupt processing program described later. It will be.

After the interrupt vector is set, S2600
Through 2800, the presence or absence of a communication error is detected, but if the occurrence of a communication error is not detected and the determinations at these steps are all NO, S
In 2900, the one-page reading / sending process in phase C is performed. After that, it is determined whether or not the stop key 164 is pressed in S3000, and whether or not a communication error or a device error occurs in S3100. If the occurrence of a communication error is detected in phase C or the pressing of the stop key 164 is detected, in S3111, in addition to the normal error processing, the termination processing of the image reading device 42 is performed or the RAM 202 is executed.
Processing for ending the image reading is performed, such as deleting the data stored in the PC side transmission data buffer 252 or the read image data buffer 258. The error processing including this read end processing is called error processing in phase C. If the determination results in S3000 and S3100 are NO, the process in phase D is performed in S3200. The reading / sending of one page of the manuscript is completed.

After the processing in phase D is completed, S33
In 00 to S3500, it is detected whether or not a communication error has occurred. If the occurrence of a communication error is not detected and the judgment in all steps is NO,
In S3600, it is determined whether or not the original 90 to be read next is set on the original table 94. If the next original 90 is set, the determination result is YES.
Then, S2500 to S3600 are executed again. These executions are repeated until the original plate sensor 98 detects that the next original 90 is not present. Also, in S3300 to S3600,
When the occurrence of communication error is detected, Phase B
An error process similar to the error process in step 1 is performed.

If the original table sensor 98 detects that there is no original 90 to be read next, S360.
The determination result in 0 is NO, and S3700 to S
In 3900, the processing of phase E is performed, and the processing for ending the reading of the original 90 by the image reading device 42 and the like are performed. In the present embodiment, the completion of a series of originals is detected when the original 90 to be read is not set on the original table 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 step S2910, the initial setting for reading one page of the document 90 is performed. Specifically, the feed amount of the document feeding device 96 in the image reading device 42 is set according to the resolution, or the read image data buffer 2
The initialization of 58 is performed. In the present embodiment, the conditions for reading the resolution and the like in the image reading device 42 are set every time the original of one page is read. Therefore, it is possible to set the conditions for reading in page units. However, it is not always necessary to set the reading condition for each page in this way, and it may be set only at the start of reading a series of completed documents. In that case, Phase D
The process in phase C may be performed after the end of the process in.

In S2911, reading is started. While the image reading device 42 starts reading, such as the driving of the document feeder 96, the port for inputting the binary data is the read image data for inputting the read image data of the I / O port 210. Set to gate array for input. Also, about 10 μs of DMAC208
A transfer request permission signal is issued for each transfer request signal. As a result, the CCD output voltage is binarized based on the threshold value supplied by the DMAC 208, and the read image data as the binarized data is the above-mentioned I / O.
DMA through port 210 gate array
Read image data storage buffer 2 according to the command of C208
It is stored in 58.

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

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

If one of the above-mentioned three conditions is satisfied while the image reading device 42 performs the reading and the encoding in parallel, in S2914,
The reading by the image reading device 42 is interrupted. I /
The setting of the O port 210 is switched to the port for sending the image data from the gate array for inputting the read image data, and the driving of the document feeding device 96 is stopped. The reading is interrupted with the feeding of the original 90 being stopped. In the present embodiment, the reading by the image reading device 42 is interrupted when one of the above-mentioned three conditions is satisfied, but when the condition is satisfied, immediately, that is, an interrupt signal for switching to transmission. The reading is interrupted before the is issued. In other words,
After the reading is interrupted, the interrupt is enabled.

In S2915 and 2916, it is detected whether the stop key 164 is pressed or not. If the stop key 164 is pressed, the interrupt process is prohibited in S2918, and then the process returns to S3000 in FIG. In this case, the determination result in S3000 is also YE.
The processing becomes S, and the error processing in phase C is performed in S3111. When a device error or the like is detected, the process similarly returns to S3000, and the determination result of S3100 is Y.
As ES, an error command is issued in S3110 and 3111, and error processing in phase C is performed.

If the determinations in S2915 and 2916 are NO, in S2917 the transmission is started 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 by the personal computer 4, the data transmission interrupt prohibition flag 244 is switched from the state of prohibiting the data transmission to the state of permitting the transmission when the interrupt signal is issued. as a result,
Execution of the image data transmission P / S interrupt processing program at the time of FAX data reception of FIG.
When the transmission encoded image data is supplied to the / S data transmission buffer 246, it is serially converted and transmitted to the personal computer 4. Note that when executing the program of FIG. 29, S4
The <DLE> data used in 24 is stored in the PC side transmission data buffer 252 in S2959, which will be described later, when the page end is detected.

Until the transmission of the transmission encoded image data to be transmitted is completed, whether or not the stop key 164 is pressed is detected for each byte transmission. As described above, in the case of converting the transmission encoded image data which is 1-byte parallel data into serial data, the clock is supplied to the parallel / serial conversion circuit 240 for 1 ms. When it is detected that the stop key 164 is pressed during sending, the determination in S2919 becomes YES, and the interrupt process is prohibited and the error process is performed as described above. During transmission of the encoded image data, a program (not shown) is executed to detect whether or not the CTS control signal blocks transmission from the facsimile apparatus 2, and the block state continues for a set time or longer. If it is detected that the error has occurred, the error processing in the phase C similar to that described above is performed by the interrupt.

Whether or not all the transmission coded image data to be transmitted has been transmitted is detected based on the address value of the PC side transmission data buffer 252 in which the transmission coded image data is initially stored. When the pointer indicating the address of the PC side transmission data buffer 252 indicates the address value at which the transmission encoded image data is first stored, the end of transmission is detected. After the transmission is completed, in S2921, it is determined whether or not the page is the end. It is determined whether or not the interruption of the image reading device 42 is the page end. If the page end has occurred, the determination is yes, and in step S2922, the end processing for reading the one-page document of the image reading device 42 and the like are performed, and the process returns to step S3000 of the main routine. This completes the reading and sending of one page of the original.

If the reading is interrupted due to another cause, the result of the determination in S2921 is NO, S2911 and subsequent steps are executed again, and the reading of the original is continued. The execution of S2911 to 2921 is repeated until the page end is detected.

Next, the encoding process in S2913 of FIG. 43 will be described with reference to the flowchart of FIG. In step S2950, it is determined whether the read image data storage buffer 258 stores the read image data for one line. If the read image data for one line is stored, it is determined as YES, S2951,
In 2952, the read image data for one line is 1
It is supplied to the encoding buffer 271 which is a line buffer, the transmission encoded image data is created based on the transmission encoded image data processing program, and stored in the PC side transmission data buffer 252. In addition, <EOL> data representing the end of 1-line image data is also stored. On the other hand, 1
When the read image data for the line is not stored, the encoding in S2951 and S952 is not performed,
Only reading will be done. However, since the reading speed is very high, it is usual that one line of read image data is stored in the read image data storage buffer 258 when the reading by the image reading device 42 is not interrupted.

In S2953, it is determined whether or not all the transmission encoded image data to be transmitted to the personal computer 4 has been transmitted. When this step is first executed, the determination is NO because the transmission has not started,
In steps S2954 to 2956, it is determined whether the page end, the stop key 164 is pressed, and the remaining storage capacity of the PC side transmission data buffer 252 is less than or equal to a set amount. Strictly speaking, the remaining storage capacity of the PC side transmission data buffer 252 is the same as the remaining storage capacity of the dedicated buffer (PC side transmission data buffer 252) for the transmission encoded image data and control data of the RAM 202 and that of the shared buffer. The remaining storage capacities of both PCs and the storage capacity of the PC side transmission data buffer 252 and the PC side transmission data buffer 252 are simply referred to as the storage buffers and the remaining storage capacities of both of them unless otherwise specified. I will call it. Also,
In this embodiment, the set amount of the remaining storage capacity is 1 cluster (4 Kbytes).

The page end is detected because all the information written on the original 90 of one page is read by the image reading device 42 and binarized, and the binarized read image data is encoded. , PC side transmission data buffer 25
When it is stored in 2. In the present embodiment, the document sensor 99 detects the end of the document 90, 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 the processing related to the reading of one page of the original, which is a kind of a series of originals, has been completed.

The stop key 164 is used by the user to set the original 90
Press to instruct to suspend reading. for that reason,
When it is detected that the stop key 164 is pressed, the reading is interrupted.

When the PC side transmission data buffer 252 becomes full of memory, the encoded transmission encoded image data is not stored thereafter. In order to avoid this, it is necessary to interrupt the reading while the PC side transmission data buffer 252 has the remaining storage capacity equal to or larger than the set amount. When the size of the original 90 is a regular size such as A4 or B4, the PC side transmission data buffer 252 normally does not become full of memory even if one page of the original is read. But,
When the size of the original 90 is long, the memory 90 may become full.

Even if the original 90 is of a regular size, the PC side transmission data buffer 252 becomes full of memory when halftone is set in the image reading device 42 or when the image of the original 90 is particularly fine. Could be. When these halftones are read or when the image of the original document 90 is fine, the dot data changes frequently. Therefore, even if the read image data is encoded, the number of data does not almost decrease, or conversely increases. This is because

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

When the steps S2954 to S2956 are first performed, 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 set, and S2958. At, it is determined whether the time is up. When the steps S2957 and 2958 are first executed, the determinations are both NO, so the execution is returned to S2951. It is not the page end that is not returned to S2950 and the reading is not interrupted. Therefore, as described above, the read image data buffer 25
This is because it is considered that the read image data for one line is stored in 8.

Thereafter, similarly, S2951 to S29
The execution of 58 is repeated. If the determinations in S2954 and 2955 are YES, the 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.
At, the timer is reset, and the process returns to S2914. If the determination in S2956 is YES, the timer is reset in S2960 and then the process returns to S2913.

In this embodiment, the stop key 164
Even when it is detected that the button has been pressed, the page end process is performed in S2959, but the page end process is not essential. However, even if the stop key 164 is pressed, if the image data read up to that time is sent to the personal computer 4, it indicates the end of the image data being sent <DLE
> It is desirable to store the data in the PC side transmission data buffer 252.

Even if the determinations in S2954 to 2956 are 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, the transmission is started in S2963 and 2964 as described above, and the time-up flag is set. Even if the page end is not detected, the reading is interrupted when the time-up is detected, because the line with the personal computer 4 is disconnected when the continuous reading time exceeds the timeout time (here, 90 seconds). Because it will be done.

Thereafter, in S2950, it is determined whether read image data is stored in read image data buffer 258. If it is stored, the determination is YES, and encoding is performed in S2951 and S2952. When the encoding is performed in parallel with the transmission, the reading by the image reading device 42 is suspended, and therefore the read image data buffer 2 is read before the encoding is performed.
It is determined whether or not the read image data is stored in 58. If it is not stored, the determination is NO and S2953 and subsequent steps are executed. The encoding will not be done in parallel with the transmission. As described above, when the transmission is started, the CPU 200 47
The clock is supplied to the parallel / serial conversion circuit 240 via the second clock input terminal. Therefore, the CPU
200 is ready to execute another program.

In S2953, it is determined whether or not all the transmission encoded image data to be transmitted has been transmitted. If there is transmission encoding image data to be transmitted, and if the determination is NO, the same applies in S2954 to S2956. A decision is made. If all the determinations in S2954 to S2956 are NO, the time-up flag 298 is set, so the determination in S2957 becomes 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 and the transmission is switched due to the time-up.
When the page end is reached, since the read image data is not stored in the read image data buffer 258,
This is because it is not necessary to perform encoding, and if encoding is performed in a state where the remaining storage capacity of the PC side transmission data buffer 252 is less than or equal to the set amount, the encoded read image data (transmitted encoded image data) Because there is a case where cannot be stored.

Transmission [0327] The transmission and the encoding are executed in parallel until the transmission of the encoded image data is completed (while the read image data is stored in the read image data buffer 258). If the transmission is completed, the determination in S2953 is Y.
The ES is set, and in S2965 to S2967, the time-up flag 298 is reset, reading is started, and the timer is started. Then, if the read image data is stored in the read image data buffer 258, the encoding is performed in parallel with the reading in S2951 and S2952.

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

As described above, according to this embodiment, the image reading device 42 of the facsimile device 2 is used to make the personal computer 4
The image of the original document 90 can be input to. for that reason,
There is an advantage that a dedicated image reading device for the personal computer 4 is unnecessary. Further, since the reading and sending are performed time-divisionally, that is, alternately and alternately, even in a facsimile apparatus having a limitation that reading and sending cannot be performed in parallel, the PC-side transmission data buffer It is not necessary to increase the storage capacity of 252, and the cost increase can be avoided. Further, there is an advantage that the user does not need to perform a troublesome work such as dividing the original even when the information of one unit of the original is large.

If the reading of the image and the sending of the image data are carried out in a time-division manner, the time from the start of sending the first image data to the end of the sending of the last image data becomes long, and it is necessary to send the image data. Cable occupancy time becomes longer.
Therefore, it is more advantageous to perform time-division reading and transmission between the facsimile device 2 and the personal computer 4 connected by the dedicated cable, than between facsimile devices that use a common line for transmission. . However, even between facsimile machines, the storage capacity of the read image data buffer 258 can be reduced, the advantages of reducing the need for document division, etc. can be enjoyed, and it is meaningful to apply the present invention sufficiently.

Further, in the present embodiment, the reading and the sending are performed in a time division manner, while the encoding is performed in parallel with both the reading and the sending, so that only one of the encoding is performed. Read and
The time required for sending can be shortened. Since the encoding is performed by software by executing the encoded image data processing program, the time required is longer than reading and sending performed by hardware, so that only one of them is performed in parallel. In this case, extra time is required for reading and sending due to the difference in the required time between one of them and the encoding, but if both reading and sending are performed in parallel, the extra reading is required. You can eliminate a lot of time. Moreover, in the present embodiment, when the continuous reading time by the image reading device 42 exceeds the time-up time shorter than the timeout time, the reading is interrupted, so that the continuous reading time exceeds the timeout time. It is avoided that the line with the personal computer 4 is opened.

As is clear from the above description, in the present embodiment, the I / O port 210 is the facsimile device 2.
And a partner device 114 constitutes another facsimile data transmitting device and another facsimile data receiving device. A portion of the ROM 204 that stores S201 to S232 of the PC data transmission program and a portion of the CPU 200 that executes these steps are
A facsimile data transmitting means or a computer data transmitting means is constituted together with the modem 214 and the NCU 222, and the facsimile number is the transmission destination designation data, and the self-facsimile number buffer 264 constitutes the facsimile number storing means which is a kind of the self-designating data storing means. ing. Transmission program S73 to S7 of the ROM 204
6 is stored depending on whether the facsimile number sent from the personal computer 4 and the facsimile number of the facsimile device 2 stored in the own facsimile number buffer 264 match. Alternatively, PC data recording of the ROM 204, which constitutes a facsimile number dependence selecting means, a facsimile number numeral matching dependence selecting means, and a short facsimile number matching dependence selecting means, which is a kind of designated data matching dependence selecting means for selecting non-recording Program S30
The recording device 29 when the recording of the portion storing 1 to S324 and the portion of the CPU 200 for executing those steps is selected by the designated data consistency dependency selecting means.
And a recording control means at the time of data transmission that causes the recording to be performed.

Further, the NCU 222 is the facsimile apparatus 2
Of the PC reception program shown in FIG.
7, S863, S867, S868, S875 and the portion of the CPU 200 that executes these steps constitute computer reception control means for causing the personal computer 4 to receive the facsimile data transmitted from the partner device 114. . The part of the ROM 204 storing S502 of the reception program shown in FIG.
4 constitutes reception data selection means for causing a computer to selectively receive the signal transmitted from the computer. ROM2
S7 in the FAX incoming determination program shown in FIG.
03, S753, S803 storage unit and CPU
The part of the device 200 that executes these steps is one of the transmission-related event dependency determination means that is one of the signal determination means that determines whether the data transmitted from the outside is a facsimile data signal or a telephone signal. A portion for storing S712 of the ROM 204 and a portion for executing the step of the CPU 200 constituting the CNG signal dependence judging means are pseudo call end dependence judging means which is one of the transmission related event dependence judging means which is a kind of the signal judging means. Configuring the ROM
The portion storing S605 of 204 and the portion executing the step of the CPU 200 constitute a facsimile data signal reception instruction dependency determining means which is one of the transmission related event dependency determining means which is one type of signal determining means, and the ROM 20
4 of the CPU 200 and the portion of the CPU 200 that executes that step constitute a set number-of-times calling dependency determining means that is one of transmission-related event dependency determining means that is a type of signal determining means, and S766 and S817 of the ROM 204.
And a portion of the CPU 200 that executes these steps constitute a silence state dependency determination means which is one of transmission related event dependency determination means which is a type of signal determination means.

Further, the FAX side reception data buffer 25
4 constitutes a facsimile data storage means, and ROM 20
4 of FIG. 26, the part storing S371 to S378 of the image data receiving modem interrupt processing program shown in FIG. 26 and the part executing the steps of the CPU 200 constitute a computer unreceivable facsimile data storing means, and a recording device. 29, a paper output flag 284 which is a kind of recording execution instructing means, a portion storing S526 of the receiving program shown in FIG. 31 and a portion of the CPU 200 which executes the step constitute the alternate reception recording means, and the alternate flag 286. S511 and S5 of ROM204
39 for storing the non-recordable facsimile data storage means for storing S25 to S915 of the substitute reception program shown in FIG.
The substitute receiving means is configured with the portion for storing S950 to S967 of the paper output program shown in and the portion for executing those steps of the CPU 200. ROM20
4 of the receiving program shown in FIG. 31, S507, S508
And a portion of the CPU 200 for storing those steps constitute a facsimile data reception start reception possibility determination means or a computer reception possibility determination means, and store S862 and S863 of the PC reception program shown in FIG. Portion and CPU200
36 of the ROM 204 shown in FIG. 36 in which the portion for executing these steps constitutes the reception possibility determination means or the computer reception possibility determination means during facsimile data transmission.
A portion for storing S845 of the signal generation program and C
The part of the PU 200 that executes the step constitutes the facsimile highest level proxy receiving means. ROM20
4 of FIG. 26, a portion storing the image data receiving modem interrupt processing program at the time of receiving FAX data and the CPU 2
The part of the program 00 for executing the program constitutes the facsimile data receiving means during the acceptance / rejection determination. ROM2
04 of the intercepted data processing program shown in FIG.
A portion for storing 1008 and a portion for executing the step of the CPU 200 constitute a reception urging means for urging the personal computer 4 to receive the facsimile data after the substitute reception is completed.
A portion of the ROM 204 for storing S1020 and S1028 and a portion of the CPU 200 for executing these steps constitute a receivable facsimile data transmitting means for transmitting facsimile data when the personal computer 4 is ready to receive after the proxy reception is completed. S1013, S10
15, a portion storing S1005 and S1006 and C
The part of the PU 200 that executes these steps constitutes a recordable time recording control means for recording the facsimile data that has been intercepted when the recording device 29 becomes recordable.

Further, the part of ROM 204 storing S1019 of the interception data processing program shown in FIG. 40 and the part of CPU 200 executing that step constitute data change means, and the part of ROM 204 storing S1016 and that of CPU 200. The part that executes the steps constitutes the highest level data changing means.

Further, the FA shown in FIG.
When X data is received, the part storing the image data receiving modem interrupt processing program and the part executing the program of the CPU store the facsimile data at the data transmission timing from the partner device 114, and are the FAX side receiving data buffers which are the facsimile data storing means. The facsimile data storing means for storing in 254, the portion storing the S860 of the PC receiving program shown in FIG. 37 of the ROM 204 and the portion executing the step of the CPU 200 constitute the receiving possibility determining means for storing facsimile data,
Portion storing S863 of ROM204 and CPU2
The portion of 00 for executing the step constitutes a facsimile data transmitting means for transmitting the facsimile data to the personal computer 4 when the personal computer 4 can receive the facsimile data. A portion of the ROM 204 for storing S862 of the PC reception program shown in FIG. 37 and C
The part of the PU 200 that executes the step constitutes data transmission stopping means for stopping the transmission of the facsimile data by the facsimile data transmitting means when the state in which the personal computer 4 cannot receive the facsimile data continues for a set time or longer. is doing. The portion of the ROM 204 for storing S1015 of the interception data processing program shown in FIG. 40 and the portion of the CPU 200 for executing those steps together with the recording device 29 constitute recording means for stopping data transmission.

The portion of the ROM 204 for storing S71 and S77 to S81 of the transmission program shown in FIG. 14 and the portion of the CPU 200 for executing these steps constitute calling means for making a call to the other party on the basis of the instruction from the personal computer 4. Then, the PC / TEL shown in FIG.
The portion of the program that stores S357 and S359 and the portion of the CPU 200 that executes the step constitute the call state facsimile data transmission means, and the portion of the ROM 204 that stores S356 and the portion of the CPU 200 that executes the step of the call state facsimile data. The portion of the ROM 204 that stores S360 and S361 and the portion of the CPU 200 that executes these steps constitute the facsimile data transmission instruction rejection unit during communication, and store S82 of the transmission program shown in FIG. The part and the part of the CPU 200 that executes the step constitute the call propriety judging means, and RO
The portion of S204 that stores S84 and the portion of CPU 200 that executes these steps constitute a call prohibition notification means.

Read image data buffer 2 of RAM 202
Reference numeral 58 constitutes read image data storage means, and PC side transmission data buffer 252 constitutes transmission image data storage means including transmission encoded image data storage means. Further, S2 of the flowchart of the control device 40 shown in FIG.
A part that executes 952 and 952 constitutes an encoding unit, and the serial / parallel conversion circuit 240 and the CPU 200
And the like constitute transmission means including transmission encoded image data transmission means. Furthermore, S2914, 29 of the control device 40
A part for executing 17, 2954 to 2958 constitutes a reading and sending control means, and a part for executing S2963, S2950 to 2952 constitutes a sending encoding parallel processing instruction means.

It should be noted that in the above embodiment, the personal computer 4 is set to P
When the C data is transmitted to the facsimile apparatus 2, the transmission partner is designated by the facsimile number, but not limited to the facsimile number, the abbreviated number, the identification number,
You can specify the recipient, such as the recipient's address, abbreviation, and common name,
It may be specified by the data corresponding to the facsimile number and one-to-one. In this case, the self-designated data storage means for storing the data designating the facsimile device stores the data designating the facsimile device 2 with the same type of designation data as the data designating the transmission partner. If the designated data is data that designates the facsimile device 2, the facsimile device 2 is caused to record the facsimile data. Further, a transmission destination-facsimile number correspondence storage means for associating the transmission destination designation data and the facsimile number with the facsimile device, and when the self is not designated as the transmission destination, the facsimile number corresponding to the designated transmission destination is transmitted. There is provided a facsimile number transmission means for searching the other party-facsimile number correspondence storage means and transmitting it to the external line.

Further, in the above embodiment, when the calling transmission command instructing the data transmission from the personal computer 4 is transmitted during the telephone call, the transmission is rejected. Computer 4 to reject
The error command may be output to and the lamp provided on the operation panel 12 of the facsimile apparatus 2 may be lit or blinked to notify the caller that there is data to be transmitted. A display means for transmitting PC data is provided.

Further, in the above embodiment, even if the interface box 6 is not connected, the output mode setting menu is displayed on the display unit 150 by operating the function key 174. The output mode setting instruction may not be displayed on the display unit 150 when the box 6 is not connected. When the interface box 6 is not connected, the facsimile data is recorded by the recording device 29 regardless of the type of output mode, and thus it is not necessary to set the output mode. Therefore, for example, interface box connection determining means for determining whether or not the interface box 6 is connected when the function key 174 is pressed in the facsimile apparatus 2 is provided, and if not connected, an output mode setting instruction is displayed. It suffices not to be displayed on 150. In this way, the number of types of functions set by the user is reduced, and the function setting operation is facilitated. Further, even if the output mode is set to the PC / ONLY mode, the facsimile data is not transmitted to the personal computer 4, and the FAX side reception data buffer 254 is filled with the facsimile data, and further facsimile data cannot be received. It is possible to avoid the situation of becoming. Further, even if the interface box 6 is not connected, the output mode set in the facsimile device 2 at the time of connection is left as it is. Therefore, when the interface box 6 is connected again, the facsimile mode is selected in the mode selected by the user. The data is output.

Further, in the above-described embodiment, when the power of the personal computer 4 is turned off, whether or not the capacity of the facsimile data storage buffer 328 of the personal computer 4 is full, etc.
Although it is 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. By doing this, for example, when the power is off, the interface
As in the case where the box 6 is not connected, the facsimile data received by the facsimile device 2 is recorded in the recording device 29 or the function key 174 is operated, regardless of the setting of the output mode. It is possible to prevent the setting from being displayed, or to prevent the ring command from being output when the power is off when transmitting the facsimile data to the personal computer 4 after the reception of the proxy.

In the above embodiment, the personal computer 4 cannot receive the facsimile data based on the output state of the CTS control line while the facsimile device 2 is transmitting the facsimile data received from the partner device 114 to the personal computer 4. It was decided whether or not there was,
Further, if the disconnection / thesis 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
You can see if it is not connected.

Furthermore, in the above embodiment, when the personal computer 4 determines whether or not the facsimile data cannot be received, the transmission of the ATA signal and the output of the CTS control signal line prevent the data transmission. Although it has been supposed to wait for 3 seconds to be in the ready state, it may be waited for a time longer than 3 seconds.

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

In the above embodiment, the page end, the remaining storage capacity of the PC side transmission data buffer 252 is less than or equal to the set amount, the time is up, and the stop key 164 is pressed. The reading was interrupted when any one of the four conditions of 4 was satisfied. However, the reading was interrupted when any two of the four conditions were satisfied, It may be issued when all the conditions are met. Further, 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 sending includes that the remaining storage capacity of the PC side transmission data buffer 252 is equal to or less than the set amount, but the read image data buffer 258. It may be included that the remaining storage capacity of is less than or equal to a set amount. When the time required for encoding is longer than the time required for reading such as binarization, the read image data buffer 252 stores more read image data as the information amount of the document read by the image reading device 42 increases. Becomes
Remaining storage capacity is reduced. Therefore, it is effective to interrupt the 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 can be interrupted and the sending and the encoding can be performed in parallel.

Further, the original 9 is detected by the original end sensor 99.
The detection of the end of 0 can be one of the conditions for interrupting the reading. The reading itself of the original 90 by the image reading device 42 is also a process related to the reading.
Further, when the end of the original 90 is detected, the reading can be interrupted so that the encoding and the sending can be performed in parallel.

Further, in the above embodiment, the read image data was encoded to be the transmitted image data, and then the parallel / serial conversion was performed and transmitted, but it is not always necessary to encode the read image data. Not essential. The read image data may be directly parallel / serial converted and transmitted without being encoded. In that case, the read image data and the sent 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 device, 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 is encoded not only when the image is read based on the instruction of the personal computer 4 but also based on the instruction of the personal computer 4. When sending data to other devices (including the facsimile device 2),
The same applies when the facsimile device 2 causes the personal computer 4 to receive the facsimile data transmitted from another device.

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

Furthermore, not only the facsimile apparatus in which reading and encoding and sending are selectively performed, but also reading and
The present invention can be applied to a facsimile machine in which encoding and transmission can be performed in parallel. In a facsimile machine in which reading, encoding and sending can be performed in parallel, reading, encoding and sending are performed in a time division manner, and
If the sending and the encoding are performed in parallel, even if the time required for the encoding is longer than the time required for the reading, the amount of the read image data stored in the read image data buffer 258 is equal to the elapsed reading time. Since the increase with time is avoided, it is not necessary to increase the storage capacity of the read image data buffer 258, and the cost increase can be avoided.

Also, in the above embodiment, the personal computer 4 is
The size of one liquid crystal constituting the display unit 116 is the same as the size of the reading area when the resolution of the facsimile apparatus 2 is super fine, but the vertical and horizontal ratio of the size of the liquid crystal is the facsimile apparatus. The present invention can also be applied to a facsimile apparatus which is used by being connected to a computer having different vertical and horizontal ratios of the reading areas of two different resolutions. In this case, in order to convert the facsimile data into data that can be displayed on the display of the computer, for example, data processing means is provided, the number of dot data is increased or decreased in the scanning direction, and the number of data lines is increased in the sub-scanning direction. Increase or decrease. The data processing means may be provided in at least one of the facsimile device and the computer. However, when the number of lines and the number of dot data are reduced, the data processing means is provided in the device on the data transmission side, and when the number is increased, the data processing means is provided. It is desirable to provide data processing means for transmission on the data receiving side in order to shorten the transmission time.

In the above description, the partner device 114 is assumed to be a facsimile machine equipped with a recording device and an image reading device, but it has a facsimile data receiving function and a facsimile data transmitting function, but does not have a recording device or an image reading device. There is no problem even if there is no facsimile modem as the partner device. Further, the transmission partner for transmitting the facsimile data to the facsimile device 2 is not limited to the facsimile device, but may be a facsimile data transmission device having at least a fax data transmission function.

It is not indispensable to store the output mode at the time of proxy reception by setting the paper output mode historical line reception flag 292, the PC / ONLY mode historical line reception flag 294, the paper output mode historical line reception flag 296. When processing the received data, as described above, the processing may be performed according to the output mode set and stored by the operation of the function key 174 or the like.

In addition, although not exemplarily illustrated, the present invention can be implemented in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of drawings]

FIG. 1 is a perspective view showing a facsimile apparatus which is an embodiment common to the first and second inventions, 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 device.

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

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

FIG. 5 is a RA of a computer which is a main body of the control device.
It is a figure which shows the structure of M notionally.

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 the ROM of the facsimile apparatus.

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

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

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 device.

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

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

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

FIG. 18 is a flowchart showing a data output 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 device.

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 device.

FIG. 22 is a flowchart showing a recording image data reception P / S interrupt 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 device.

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

FIG. 25 is image data when the personal computer receives the facsimile data received by the facsimile device,
6 is a sequence chart illustrating command transmission and reception.

FIG. 26 is a flowchart showing a fax data reception modem data reception modem interrupt processing program 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 FAX data reception command output modem interrupt processing program stored in the ROM of the facsimile apparatus.

FIG. 29 is a flow chart showing an image data transmission P / S interrupt processing program for receiving FAX data, which is stored in the ROM of the facsimile apparatus.

FIG. 30 is a flow chart showing a data reception P / S interrupt processing program for receiving FAX data, which is stored in the ROM of the facsimile device.

FIG. 31 is a flowchart showing a reception program stored in a ROM of the facsimile device.

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

FIG. 33 is a flowchart showing a fax incoming determination program in F / T mode, which is stored in the ROM of the facsimile apparatus.

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

FIG. 35 is a flow chart showing a program for judging FAX incoming in MC mode, which is stored in the ROM of the facsimile apparatus.

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

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

FIG. 38 is a flowchart showing an alternate reception program stored in the ROM of the facsimile device.

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

FIG. 40 is a flow chart showing a proxy reception data processing program stored in the ROM of the facsimile apparatus.

FIG. 41 is a sequence chart when reading / sending is performed between the facsimile device and a personal computer.

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

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

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

[Explanation of symbols]

 2 Facsimile device 4 Personal computer 11 Handset 20 Recording paper sensor 29 Recording device 40 Control device 42 Image reading device 80 Toner level detection device 94 Original platen 98 Original document sensor 99 Original end sensor 114 Other facsimile device (counterpart 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 (2)

[Claims] 1. A facsimile having a connection section with another facsimile data transmission apparatus, a connection section with a computer, and computer reception control means for causing a computer to receive facsimile data transmitted from another facsimile data transmission apparatus. An apparatus, which is a device capable of receiving, on behalf of the computer, facsimile data transmitted from the other facsimile data transmission device, and a level at which the computer can process the facsimile data received by the alternate reception device on behalf of the computer. And a data changing means for changing the data to the data of 1. 2. The facsimile apparatus according to claim 1, wherein the data changing unit includes a highest level data changing unit that changes the highest level data that can be processed by the computer.