JPS6244455B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a facsimile device, and more particularly, facsimile transmission and reception operations can be performed by a microprocessor, semiconductor central processing unit (CPU), one chip or several chips based on data stored in advance in a storage device such as a semiconductor read-only memory (ROM). This invention relates to a facsimile device using an LSI system control method, which is controlled by a small arithmetic processing unit such as a microcomputer LSI. In this type of conventional facsimile machine,
The operation of the entire device is centrally controlled by the system control unit, which consists of a microcomputer system whose main elements are semiconductor LSIs such as the CPU, ROM, and RAM (semiconductor read/write memory). An example configuration of a conventional facsimile device is shown in FIG. In FIG. 1, an NCU is a line control device for selectively connecting a facsimile device to a telephone circuit. MOD1 to MOD3 are communication signal conversion units that convert telephone line signals into data signals. The DCR is an image signal processing circuit unit that converts a data signal into an image signal and an image signal into a data signal. This image signal processing circuit unit DCR
The system includes an expander that converts (decompresses) a data signal that has been compressed such as run-length encoding into an image signal for printing, a compressor that converts the image signal into a data signal that has been compressed, and a compressor that converts a serial signal into an image signal for printing. This includes converters that convert parallel signals and vice versa. The SCU is a system control unit that controls switching between transmission mode and reception mode, switching the direction of signal flow, and controlling data compression and expansion. SCA and VPU are scanners that optically scan originals, image signal processing units that obtain image signals from read signals, WE and PR are recording control units that write and process received image signals, plotter units that reproduce original images, and OP-PORT. is an operation/display unit, and PSU-1 to PSU-4 are power supply units. Each of these units is connected to a common bus via an input/output section interface and an input/output control section (I/O port). The system control unit SCU performs error checking by reading the status signals of sensors or circuits in each unit, and in the event of an error, disconnects the line, displays an abnormality, etc.
The system controls power off, but when such an error occurs, it is difficult for the operator to confirm what kind of error occurred or where the error occurred after the system power is turned off. Additionally, it is not possible to confirm other information, such as where an error occurred during transmission. An object of the present invention is to facilitate checking what kind of error has occurred. In order to achieve the above object, in the present invention,
A unit that controls facsimile transmission and reception, a unit that controls the operation of mechanical elements, an image signal processing circuit unit that compresses or expands image signals, etc. are modularized, and each module control unit is controlled by commands from the system control unit. In a facsimile device, a non-volatile storage device that stores errors determined by the system control unit or the module control unit and has an error data storage area and a data count storage area; and an error data stored in the non-volatile storage device. or a display means for displaying that reading of the error data has been completed; the system control unit is provided with an error data count means and a means for writing and reading data to and from the nonvolatile storage device; When writing error data to, the error data is stored in an error data storage area of the nonvolatile storage device, and the number of error data counted by the counting means is also stored in a data number holding area of the nonvolatile storage device. When reading error data, the error data is read by referring to the number of error data stored in the non-volatile storage device, and the error data is sequentially displayed on the display means, and the error data is counted by the counting means. The number is subtracted, and when reading is completed, that fact is displayed on the display means. According to this, the non-volatile storage device stores the errors determined by the system control unit or the module control unit and also stores the number of error data. When reading error data, the system control unit refers to the number of error data stored in the non-volatile storage device, reads out the error data, sequentially displays this error data on the display means, and displays the error data on the display means. The means subtracts the number of error data, and when reading is completed, the display means displays the fact. Therefore, when reading out error data, the error data stored in the non-volatile storage device is sequentially displayed on the display means, and when all the error data is read out from the non-volatile storage device, the reading ends on the display means. is displayed. Therefore, the type of error can be easily recognized from the displayed error data, and
It is also easy to recognize how many errors there are.
A unit that controls facsimile transmission and reception, a unit that controls the operation of mechanical elements, an image signal processing circuit unit that compresses or expands image signals, etc. are modularized, and each module control unit is controlled by commands from the system control unit. As a result, it is clear which unit the error data belongs to, and therefore it is easier to recognize which unit the error occurred from the error data. Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings. FIG. 2 shows an embodiment of the present invention. In this, the control unit is the system control unit.
SCU, first module control unit MCU-1
and a second module control unit CCU. First module control unit MCU
-1 is mainly assigned to control the operation of mechanical elements, and is the second module control unit CCU.
is mainly assigned to control facsimile transmission and reception. The system control unit SCU controls the first and second module control units MCU to determine the operation timing of each element of the facsimile device in the sequence operation of the entire system.
1. Assigned for controlling the CCU. As shown in the figure, each control unit SCU, MCU-1, and CCU has a CPU, ROM, and RAM as main components, respectively. The first module control unit MCU-1 is
The CCU is responsible for controlling mechanical systems such as transporting the original to the reading position, sub-scanning paper feeding for reading, sub-scanning paper feeding for recording paper, ejection, and development.The CCU is also responsible for executing communication control procedures for facsimile transmission. The SCU includes the MCU-1, CCU module control unit, and direct buffer memory RWB and
Control the DCR as its controlled unit. For example, in the control exchange between the MCU-1 and the SCU, the SCU issues large-level commands such as transporting the original to the reading position or ejecting the original. The MCU-1 interprets the command and executes the command while monitoring the status of its subordinate control units. When executing a command, check whether the original is left in the reading position, whether the original has been conveyed to the reading position at the specified time, whether the illumination lamp is burnt out, whether the original has not skewed, and whether the original has been skewed or not. If the job is normal, a normal response is returned after the job is completed, and if any abnormality is found, a response indicating the error status is returned. When the SCU receives an error response, it interprets the error status, performs error processing according to the status, and then suspends system operation. For example, if the response is that the illumination lamp system has been disconnected, this means that there is no abnormality in the document transport system, and the operation ends after the document is ejected. Of course, if the CCU is operating normally, communication control will end normally and then the operation will end. In addition, if there is a response to a document jam, the system operation is interrupted by normal termination of communication control without ejecting the document in order to prevent damage to the document. In addition, MCU-1 and CCU are affected by the order of commands from SCU, undefined command commands, etc.
Detects an error in the SCU and notifies the SCU of this in the form of a response, and the SCU also
It detects errors such as whether a job response is returned from the CCU within a predetermined time or whether it is ready to receive commands, performs error processing according to the error content, and suspends system operation. The facsimile device shown in Figure 2 is from CCITT.
It is set to perform facsimile transmission and reception called T30. In this case, the distribution of transmitted and received signals is
As shown in the figure, Phases A, B, C ₁ , C ₂ , D and E are defined, and each phase is as follows. PHASE A: Call Initiation Establish a telephone call automatically or manually. PHASE B: Procedures before message (a) Confirmation: Group confirmation (G ₁ , G ₂ , G ₃ ), reception confirmation, station confirmation, non-standard device confirmation (b) Command: Group command, Mode specification, line training, echo suppressor stop PHASE C ₁ : Procedures during a message Signal synchronization during a message, message error detection and correction, line monitoring PHASE C ₂ : Message transmission PHASE D: Procedures after message transmission signal the end of the message, signal confirmation,
Signals multi-page, signals end of facsimile procedure. PHASE E: At the end of the call release message signal and when the signal specified in the FAX procedure is not received within the time. In executing such Phases A to E, Scu
Outputs a command code consisting of 1 byte to MCU-1 and CCU. FIG. 4 shows the bit configuration within the byte. This command consists of a 4-bit code indicating a job number and a 3-bit code for distinguishing between jobs within the same job number. MCU-1 and CCU respond to SCU with response codes. Figure 5 shows MCU
The configuration of the -1 response code is shown below. MCU−
1 issues an error response with the most significant bit set to ``1'' when there is an abnormality in the controlled unit, and then transfers a 1-byte code representing the error status shown in FIG. To explain the MCU-1 response code in more detail, the job response to the SCU command has the bit configuration shown in FIG. 7, and is as follows. ☆ JOB ERROR FLAG (a) Only when a sending (receiving) system ERROR occurs for a sending (receiving) system JOB COMMAND
Set ERROR FLAG. (b) TX for INITIALIZE COMMAND
The ERROR FLAG is set regardless of whether ERROR is detected in the (transmission) or RX (reception) system. (c) For MODE SET COMMAND
Does not return RESPONSE (automatic
(Only confirmation of command delivery via handshake). ☆ END OF DOCUMENT (a) Returned when the document is no longer in the valid reading position in SCAN TO READ JOB
RESPONSE BIT (b) In PREPARE TO SEND JOB, when the original is pulled out during the job. The bit configuration of the mode set command (MODE SET COMMAND) issued by the SCU is as follows:
As shown in FIG. 8, the lower four digit bits are all set to "1". When the response code of the MCU-1 indicates that an error has occurred, the response code is a combination of one byte shown in FIG. 9a and the following one byte shown in FIG. 9b. These are: ☆ JOB RESPONSE BIT7 = 1 (ERROR
BIT), ERROR STATUS is displayed continuously.
BYTE is also transferred to SCU. ☆ ERROR STATUS BYE INDEX BIT=1
indicates that ERROR STATUS BYTE is continuous. ☆ If each abnormality cannot be detected depending on the contents of the JOB, set the ERROR BIT to "0". The bit configuration of the register (handshake control register) of the I/O interface section of MCU-1 which can be constantly monitored by the SCU is shown in FIG. 10a, and its contents are shown in FIG. 10b. In this case, SB ₁ and SB ₂ are status signals (document present/absent) of the sensor that detects the presence of the document set position and the sensor that detects the presence of the read position, respectively, in the scanner SCA unit, and ERROR is
This is a signal that changes state when MCU-1 detects an error. At IBF and ERROR, MCU-1 sets the interrupt request signal to ACTIVE and interrupts the SCU. FIG. 10c shows the bit configuration of an error response in which the MCU-1 notifies the SCU of an error in the MCU-1 itself or an error in the SCU determined by the MCU-1. This error response is as follows. ☆ ERROR returned from MCU-1 to SCU
RESPONSE (a) SCU command error (command order, etc.) (b) ERROR other than JOB ERROR generated inside the MCU, such as MCU program runaway (ERROR that can be detected by the CPU) (c) The lower 4 bits are the MCU ERROR. STATUS
represents. ☆ When CPU ERROR detected by HARD occurs,
Set ERROR BIT in HRNDSHAKE CONTROL REGISTOR (Figure 10a). To explain the response of CCU in detail, SCU
The job response has the bit configuration shown in FIG. 11, and the upper two bits are set to "1" in the event of an error. In the event of an error, one byte of the bit configuration shown in FIG. 12a is followed by one byte shown in FIG. 12b. The bit configuration of the handshake entry register (I/O interface section) of the CCU, which can be constantly monitored by the SCU, is shown in FIG. 13a, and its contents are shown in FIG. 13b. with ERROR and IBF
The CCU sets the interrupt request signal to ACTIVE and interrupts the SCU. This is done by the SCU commands mentioned above and the actions of MCU-1 and CCU in response.
The T30 standard facsimile transmission time chart is shown in Figure 14, and the reception time chart is shown in Figure 15.
As shown in the figure. The contents of the job (JOB) in these transmission/reception operations are summarized in Table 1 below. In addition, in Table 1, COMMAND is from SCU.
It shows a command given to MCU-1 or CCU, and JOB is a control operation of MCU-1 or CCU.

【table】

【table】

【table】

[Table] Figures 16a to 16f show several examples of CCU error check flows. The flow shown in FIG. 16a is shown in FIGS. 14 and 15. In the INITIALIZE JOB (CCU),
JOB indicating whether or not the JOB was completed successfully
The process of creating a RESPONSE is shown, in which the INITIALIZE JOB is started, a timer is set, and the line is connected (CCT=
1), whether the job is completed within a predetermined time limit (until T/O becomes YES), and whether the switch is active (SW HOOK = 1), determines whether it is normal or abnormal. express it
Give JOB RESPONSE to SCU. The flow shown in FIG. 16b is performed when the voice response device is set (AAD SET) state,
The normality or abnormality of the missed reception JOB is determined and displayed based on NCU ring sound detection (NCU RI L→H), time over (T/O), and whether the voice response device AAD has detected a ring sound (AAD RI). JOB RESPONSE
is given to SCU. The flow shown in FIG. 16c is similar to the flow shown in FIG. 14 and FIG.
To determine whether the JOB (line connection) is normal or abnormal, a line connection command is issued to the NCU (NCU OH) and the line is connected within a predetermined time period (until T/O=YES) (CCT).
= 1) or not, and the JOB that represents it
It gives RESPONSE to SCU. 16th
The flow shown in Figure d is the flow for determining normality or abnormality in E JOB (facsimile line disconnection operation) shown in Figures 14 and 15, and after commanding the NCU to disconnect the line (NCU OH OFF). JOB that determines normal operation or error operation based on the relationship between time limit start, CCT-1, and SWHOOK=1.
Give RESPONSE to SCU. The flow shown in Fig. 16e is a flow for determining whether the document feeding is normal or abnormal in the RB JOB shown in Fig. 15. This is determined based on whether the document has reached the fixed position within a predetermined time, and then Give the indicated JOB response to the SCU. The flow shown in FIG. 16f determines whether the initialization (INITIALIZE) when a document is input is correct or not, and spontaneously provides a response representing this to the SCU. MCU-1 also uses the same abnormality judgment flow to determine whether the JOB assigned to it is normal or not.
Responds to abnormalities. The SCU itself also determines errors on the MCU-1 and SSC sides, and notifies the errors determined by the SCU and the errors reported from the MCU-1 and CCU as described above, and also sends the error number to the nonvolatile RAM 2. , operate the normal operation part, take action to deal with the error, and then turn off the system (power off or power down). The operation flow is shown in FIG. 17a and FIG. 17b. 17th
Figure a shows the flow for determining errors on the MCU-1 and CCU sides of the SCU, and Figure 17b shows the flow when the SCU determines an error on its own, and when the MCU-1,
This figure shows the flow of error notification, writing, and system power down when the CCU reports an error. SCU error judgment flow (Chapter 17a)
FIG. 17c and FIG. 17d show a flow showing the "determination of error x" part in more detail in FIG.
FIG. 17c is a flowchart of the SCU detecting the MCU-1 error, in which the SCU gives, for example, a command to the MCU-1 to prepare for reception. The SCU senses whether it is ready to receive a command, and if so, whether it has received a command (monitoring the flag for handshake), and if yes, waits for the job response to return within a predetermined time. If a response is returned within the job timer timeout, determine whether the response is an error response. If it is an error, it receives the error status byte information following the response and determines the error status. PAPER
It determines whether it is a JAM, NO PAPER, PAPER SKEW, or servo error that operates the carriage, and assigns a different error number to each error. If any of these error numbers are detected, send this error number to SCU.
Stored in RAM2 with internal battery backup,
At the same time, it is displayed on, for example, a light emitting diode connected to the I/O port, and the power is turned off after appropriate error processing. Figure 17d shows the flow for detecting a CCU error in the SCU, and in this case, "DIS cannot be turned off" means that even though the DCS (mode designation command) has been sent, the receiving side is still not displaying the DIS (digital information). signal) is continuing.
``Modem training failure'' means that a training signal was sent, but the receiving side responded that modem training failed. Indicates that no DIS signal is sent from the receiving side. The code (error number) representing the error determined by the SCU as described above is stored in the RAM 2. The connection relationship of this RAM 2 within the SCU is shown in more detail in FIG. 18a. This FIG. 18a shows the SCU shown in FIG. 2. As RAM2
CMOS RAM is used, and this is constantly backed up by a backup circuit BBU consisting of a voltage controller VR and a backup battery BB, making it a non-volatile memory setting. In other words, if the system power is cut off, the battery
BB supplies power to RAM2 and retains the memory contents. The address and memory area of the RAM 2 are determined as shown in FIG. 18b, and writing and reading are performed as follows. When writing 1. Put the number of data in RAM2 into the memory in μ-CPU or RAM1. 2 Shift the data in the data storage area by 1 byte (arrow). 3 Insert data into the latest data storage area. 4 Determine whether the number of data is less than the storage capacity. 5 If it is less than the storage capacity, add 1 to the number of data stored in the memory in the μ-CPU, otherwise do not manipulate the number of data. 6. Store the contents of the memory in the μ-CPU in the data number holding area of the non-volatile memory RAM2. 7 Turn off the system power. When reading 1. Put the number of data in RAM2 into the memory in μ-CPU or RAM1. 2 When the read switch is pressed, it is determined that the data has ended. (The read switch is pressed every time one error number is read. 3 If the data has ended, the end is displayed. If not, the data is transferred to the non-volatile memory RAM 2.
Read from and display on the display. 4 μ - the number of data in the memory in the CPU -1
Then return to 2) to read the next data. Figures 19a to 19d show the operation flow of the SCU up to writing to RAM2.
The write control flow is shown in FIG. 19e, and the read control flow is shown in FIG. 19f. In the error judgment writing flow shown in Figure 19a, Figure 19b shows the "JOB response" step, and the "Error response decode" in C and D is shown in Figure 19b.
Error judgment C of MCU-1 is shown in Fig. 19c, and error judgment D of CCU is shown in Fig. 19d.
As shown in the figure. "Error No. Memory" is when the SCU itself checks whether the MCU-1 or CCU has returned a response within a predetermined time after issuing the command.
1 or CCU error is detected, the error number is written to RAM2, and "error number memory" is
This is a write of an error notified by the response from MCU-1 and CCU. Any of these errors
When storing the error number, the SCU writes the error number to the RAM 2 using the write control flow shown in FIG. 19e.
When reading data from RAM2, the first
As shown in Figure 9f, each time the TEST SW (test switch) is pressed, one error number is read out and displayed. The operator presses the TEST SW to read out the error numbers one by one starting from the latest data.
When all error data is read, "FF" is displayed at the end. The MCU whose bit configuration is shown in Figure 10a
-1 handshake control register and its bit configuration is shown in Figure 13a.
The CCU's handshake control registers are connected to a separate port from the command-response handshake port so that the SCU can read them at any time.
The contents of these registers are set in response to sensors and circuitry, and the SCU
Status signals represented by register bits can be read without issuing status commands to the CCU or waiting for their responses. In this way, we provided a port for direct reading of the SCU outside the command-response line because one of the sensors, circuits, etc. controlled by the MCU-1 or CCU has a large impact on system operation. This is because it is difficult to issue commands frequently and obtain status information in the form of responses due to response speed and control complexity. For example, the sensor signals (SB ₁ and SB ₂ in Figure 10a) that detect whether a document is set at a predetermined position should be under the control of the MCU-1, but may be pulled by the operator before reaching the predetermined reading position. Whether the document was pulled out, whether the document was pulled out during transmission, and when the document was set are signals that the SCU should frequently refer to because they greatly diverge the system operation. As mentioned above, the SCU checks for errors in MCU-1 and CCU, and each of MCU-1 and CCU checks for errors in the units under its control.
Notify the SCU, and the SCU will respond to these errors to notify the error, write the error number to RAM2,
and control system power off. MCU
-1 and CCU also monitor the time between commands issued from the SCU to themselves, monitor the time between receiving a response and receiving the next command, and receive a normal command after transmitting an error response. By determining whether or not the
In the same way that the SCU monitors errors in MCU-1 and CCU, MCU-1 and CCU each
Monitor SCU. This, MCU-1 and CCU
When an SCU error is detected during SCU error monitoring, the system notifies the SCU of this error.
Although it is written to RAM2 of the SCU, it may not be possible to write the error number, disconnect the line, or power down the system due to an abnormality in the SCU. Therefore,
In another embodiment of the invention, the MCU-
1 and CCU to perform error notification, line disconnection, and system power down when an SCU error is detected. And if necessary MCU−
1. Equip the CCU with non-volatile RAM and write the SCU error number before powering down the system. Such error detection and subsequent treatment may be performed similarly in the manner already described for the SCU. In another embodiment of the present invention, MCU-1 and CCU perform the SCU check operation as described above, and SCU, MCU-1, and CCU
When any one of them detects another error, it notifies you, disconnects the line, and shuts down the system power. An example of its configuration is shown in FIGS. 20a and 20b. In the example shown in FIG. 20a, the abnormality processing device ARC
If any of the SCU, CCU, and MCU-1 detects an error, the error message will be notified to the operation/display unit OP-PORT, the NCU's facsimile line will be disconnected, and the system will be powered down after a predetermined period of time. . In other words, when any control unit outputs an error signal "1", it is given to the OP-PORT and NCU to notify the error and disconnect the line, and the timer is activated.
When DE3 is triggered and timer DE3 times out, a command is given to the PSU to turn off the system power. In the example shown in FIG. 20b, the error signals of the control units SCU, CCU, and MCU-1 are respectively applied to the OP-PORT, and the OP-PORT is notified of which unit has detected the error. Figure 21a shows the flow in which the MCU-1 performs an error check on the SCU;
The figure shows the flow in which the CCU performs an error check on the SCU. As described above, in the facsimile apparatus of the present invention, the nonvolatile storage device stores errors determined by the system control unit or module control unit and also stores the number of stored error data. When reading error data, the system control unit refers to the number of error data stored in the nonvolatile storage device, reads out the error data, sequentially displays the error data on the display means, and displays the error data on the display means. The number of error data is subtracted by , and when reading is completed, the fact is displayed on the display means. Therefore, when reading out error data, the error data stored in the non-volatile storage device is sequentially displayed on the display means, and when all the error data is read out from the non-volatile storage device, the reading ends on the display means. is displayed. Therefore, the type of error can be easily recognized from the displayed error data, and
It is also easy to recognize how many errors there are.
A unit that controls facsimile transmission and reception, a unit that controls the operation of mechanical elements, an image signal processing circuit unit that compresses or expands image signals, etc. are modularized, and each module control unit is controlled by commands from the system control unit. This makes it clear which unit the error data belongs to, and therefore it is easier to recognize which unit the error occurred from the error data.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a conventional facsimile device. FIG. 2 is a block diagram showing the configuration of the facsimile device of the present invention, FIG. 3 is a plan view showing its transmission and reception procedure, and FIGS. 4, 5, and 6
Fig. 7, Fig. 8, Fig. 9a, Fig. 9b, Fig. 1
Figure 0a, Figure 10b, Figure 10c, Figure 11, Figure 12a, Figure 12b, Figure 13a and Figure 13.
Figure b is a plan view showing the bit configuration of the control signal used for controlling the operation, Figure 14 is a time chart showing the operation timing at the time of transmission, Figure 15 is a time chart showing the operation timing at the time of reception, and Figure 16a. Fig. 16b, Fig. 16c, Fig. 16d
16e and 16f are flowcharts showing the error check operation of the module control unit CCU shown in FIG.
FIG. 17c is a flowchart showing the error check operation of the SCU and the error handling operation. FIG. 17d is a flowchart showing the error check operation of the SCU module control unit MCU-1.
A flowchart showing the CCU error check operation of the SCU, Fig. 18a is a block diagram showing details of the SCU, Fig. 18b is a plan view showing the data storage area of RAM 2 of the SCU, Figs. 19a, 19b, and 19c. FIG. 19d is a flowchart showing the error detection and judgment operation of the SCU until writing an error to RAM2, and FIG. 19e is
FIG. 19f is a flowchart showing write control by SCU to RAM2, FIG. 19f is a flowchart showing readout control from RAM2 by SCU, and FIGS. 20a and 20b each show modified portions of other embodiments of the present invention. Circuit diagrams, Figures 21a and 21b
The figures are flowcharts showing the SCU error check operations of MCU-1 and CCU, respectively. NCU……Line control device, MOD1~MOD3……
Communication signal conversion unit (modem), DCR...image signal processing circuit unit, SCU...system control unit, SCA...scanner, VPU...image signal processing unit, WE...recording control unit, PR...
Programmer unit, PSU...Power supply unit, OP
-PORT...Operation/display unit, MCU-1...
...Module control unit (for mechanical control), CCU...Module control unit (for communication control).

Claims (1)

[Claims] 1. A unit that controls facsimile transmission and reception;
In a facsimile apparatus in which a unit for controlling the operation of mechanical elements, an image signal processing circuit unit for data compression or expansion of image signals, etc. are modularized, and each module control unit is controlled by commands from a system control unit, the system control unit Alternatively, a nonvolatile storage device that stores errors determined by the module control unit and has an error data storage area and a data count storage area; and an error data stored in the nonvolatile storage device or reading of the error data is completed. the system control unit is provided with an error data counting means and a data writing/reading means for the nonvolatile storage device, and when writing the error data to the nonvolatile storage device, the system control unit Error data is stored in an error data storage area of a nonvolatile storage device, and the number of error data counted by the counting means is also stored in a data number holding area of the nonvolatile storage device, and when reading the error data, The error data is read by referring to the number of error data stored in the non-volatile storage device, and the error data is sequentially displayed on the display means, and the number of error data is subtracted by the counting means, so that the reading is completed. A facsimile device characterized in that when the process is completed, a message to that effect is displayed on the display means.