JP4350782B2 - Image communication apparatus and control method thereof - Google Patents

Description

  The present invention relates to an image communication apparatus and a control method thereof, for example, an image communication apparatus that receives and processes a compressed image file such as JPEG and a control method thereof.

  Conventional facsimile apparatuses mainly perform communication of monochrome images. However, with the development of image processing technology, as color processing becomes possible in printers and scanners, color documents have become widespread, and the need for color image communication has increased in facsimile machines.

In response to this, a facsimile apparatus capable of communicating color images by an original procedure has appeared, and the color communication procedure has been standardized by the ITU-T recommendation, so that the market scale of the color facsimile apparatus is expected to further expand. .
Japanese Patent Laid-Open No. 08-237653 Japanese Patent Laid-Open No. 02-020954

  The color communication procedure according to the ITU-T recommendation is characterized in that a color communication function is added to the protocol of the conventional monochrome facsimile communication procedure, and color image data is JPEG compressed and transmitted.

  In the color communication procedure, the main scanning size that can be transmitted corresponds to A4, B4, and A3 standard sheets, that is, the specification is such that only a document of a predetermined main scanning size can be transmitted. For example, when the size of the transmission image is smaller than the predetermined size, it is necessary to create a JPEG file after making the main scanning size a fixed length by performing operations such as adding white pixels.

  However, it is possible to define the number of main scanning pixels in the header of the JPEG file. Therefore, in a color facsimile apparatus conforming to the ITU-T recommendation, there is a possibility that a JPEG file having a main scanning size different from the main scanning size declared in the communication protocol may be sent. In this case, since the main scanning length of the JPEG file is recognized as a fixed length, there is a problem that normal decoding cannot be performed, an error occurs, and as a result, print output cannot be performed.

  In this case, the color facsimile apparatus generally has a memory reception function, and printing is often started after reception of the JPEG file is completed. Therefore, in the receiving side apparatus, an error occurs during printing although the communication ends normally.

  In addition, the transmission side apparatus recognizes that the transmission is normally completed although the transmitted JPEG file cannot be printed on the reception side.

  The present invention has been made to solve the above problem, and provides an image communication apparatus and method capable of processing an image of a received compressed image file such as JPEG with an appropriate main scanning length. Objective.

  It is another object of the present invention to provide an image communication apparatus and method capable of printing out an image of a received compressed image file such as JPEG onto a recording medium without omission.

  It is another object of the present invention to provide an image communication apparatus and method for disconnecting communication and performing appropriate measures when an image of a received compressed image file such as JPEG cannot be appropriately printed out.

  As a means for achieving the above object, an image communication apparatus of the present invention comprises the following arrangement.

That is, an image communication apparatus for communicating image data with another apparatus based on a communication protocol including a declaration of a main scanning size, wherein a compressed image file with information that the main scanning size is the first size is When the second size declared as the main scanning size in the communication protocol in the communication between the receiving means that receives from the other device and the other device related to the image file is different from the first size, And communication control means for disconnecting communication .

Also, a method for controlling an image communication apparatus that communicates image data with another apparatus based on a communication protocol including a declaration of a main scanning size is a method for controlling a compressed image file with information that the main scanning size is the first size. When a second size declared as a main scanning size in a communication protocol in communication with the other device related to the image file is received from the other device and the other device is different from the first size A communication control step of disconnecting the communication .

  As described above, according to the present invention, an image of a compressed image file received from another apparatus can be printed on a recording medium without omission.

  In addition, when the image of the received compressed image file cannot be printed properly, communication can be disconnected and appropriate processing can be performed.

  Hereinafter, an embodiment according to the present invention will be described in detail with reference to the drawings.

<First Embodiment>
FIG. 1 is a block diagram showing the configuration of a color facsimile apparatus to which this embodiment is applied.

  In the same figure, the main control unit 101 is in accordance with the program stored in the ROM 102, the entire device, that is, the RAM 103, the nonvolatile RAM 104, the operation unit 105, the display unit 106, the image processing unit 107, the reading unit 108, the recording unit 109, and the drive. Unit 110 and communication control unit 111 are collectively controlled.

  The RAM 103 stores monochrome binary image data and color multi-value image data read by the reading unit 108, JPEG data obtained by JPEG compression of the image processing unit 107, and color binary data recorded by the recording unit 109. To do. The RAM 103 also includes monochrome binary data and JPEG data output to the telephone line via the communication control unit 111, color multivalued data obtained by expanding the data, and color binary data binarized for recording. Store. The RAM 103 is further used as a work area during reading, recording, or communication.

  The non-volatile RAM 104 is constituted by a battery-backed SRAM, and stores data that should not be lost, such as device-specific phone numbers and user abbreviations, and communication results and transmission start speeds. In the present embodiment, an area of an item “print position when color received image size does not match” is prepared in the nonvolatile RAM 104.

  The operation unit 105 includes a start key for transmission / reception processing, a mode key for designating a communication mode such as color / monochrome in a transmission image, a copy key for performing copy processing, a stop key for stopping operation, and registration for performing one-touch registration. It consists of a key for registering information related to the communication network such as a transmission start speed and communication partner information, a setting key for setting a calling time, and the like.

  The display unit 106 includes a dot matrix type LCD and an LCD driver, and performs various displays based on control from the main control unit 101.

  The image processing unit 107 compresses monochrome binary data read by the reading unit 108, JPEG compression of color multilevel data, and compression / decompression of monochrome binary data for transmitting / receiving image data to / from the other party in the communication processing unit 111. , Various image processes such as monochrome binary data and color JPEG image expansion when the recording unit 109 records an image, and the image data as the processing result are stored in the RAM 103.

  The reading unit 108 includes a DMA controller, a CCD or a contact image sensor (CS), a general-purpose IC, and the like. Data read using the CCD or CS based on the control of the main control unit 101 is read from the RAM 103 or image processing. Send to part 107.

  The recording unit 109 includes a DMA controller, a B4 / A4 size thermal head or inkjet head, and a general-purpose IC. The recording unit 109 reads the recording data stored in the RAM 103 based on the control of the main control unit 101, and outputs it to the recording paper. Print out. A plurality of sizes of recording paper can be set in the recording unit 109.

  The driving unit 110 includes a stepping motor for driving the paper supply / discharge rollers in the reading unit 108 and the recording unit 109, a gear for transmitting the driving force of the motor, a driver circuit for controlling the motor, and the like. The

  The communication control unit 111 is a modem that can support each standard of V.34, V.32, V.32bis, V.17, V.29, V.27ter, V.23, V.21 (H, L). And a clock generation circuit connected to these modems, an NCU, and the like, which modulate the transmission image data stored in the RAM 103 based on the control of the main control unit 101 and output it on the telephone line. is there. The communication control unit 111 further includes an ITU-T. Facsimile communication according to the 30 recommendation is realized, and an image received from the telephone line is demodulated and stored in the RAM 103.

  FIG. 2 is a diagram illustrating a memory configuration of the nonvolatile RAM 104. The nonvolatile RAM 104 stores information that should be continuously stored even when the apparatus main body is powered off. As shown in the figure, in the present embodiment, “transmission start speed” and “reception start speed” are stored. In addition to this area, an area 201 called “print position when color received image size does not match” (hereinafter simply referred to as “print position when mismatch”) is provided. Then, by the user's operation on the operation unit 105, the “mismatch print position” can be set to “left pawl” or “centering”. In the case of the “Left” setting, the main scanning element size of the color-received JPEG file is ITU-T. If the main scanning size is different from the main scanning size declared in the protocol defined in the item 30, the received image is printed on the left side of the recording paper. On the other hand, when “centering” is set, the received image is printed at the center of the recording paper in the main scanning direction when the main scanning sizes are different.

  FIG. 3 is a flowchart showing print processing when a color image (JPEG file) is received in this embodiment. A program for realizing the process shown in the flowchart is stored in the ROM 102, and the program shown in the flowchart of FIG. 3 is realized by the main control unit 101 reading the program onto the RAM 103 and executing it.

  First, in step S301, the main control unit 101 determines that the main scanning size declared by the communication protocol (hereinafter referred to as communication main scanning size) and the main scanning size declared in the JPEG file (hereinafter referred to as file main scanning size) are the same. Determine whether you are doing it.

  Here, the communication main scanning size is ITU-T. Based on the recording width (number of pixels per main scanning line length) indicated by 30 DCS (Digital Command Signal), the file main scanning size is the number of pixels per line indicated in the frame header of the JPEG file. based on.

  If these main scanning sizes match, the communication main scanning size is validated in step S302.

  In step S303, the JPEG file is printed by centering. That is, first, the image processing unit 107 decompresses the JPEG file and performs appropriate image processing, thereby generating CMYK binary data. Then, after setting the print start position so that the color image is arranged at the center of the recording paper in the main scanning direction, the printing is executed.

  On the other hand, if it is determined in step S301 that the main scanning sizes do not match, the process proceeds to step S304, and the file main scanning size is validated. As a result, the received JPEG file is correctly decompressed and printed.

  Subsequently, in step S305, it is determined whether or not the setting of “print position at mismatch” on the nonvolatile RAM 104 is “centering”. If it is “centering”, the process proceeds to step S303, where the JPEG file is expanded and converted into CMYK binary data as described above, and then printed so as to be arranged at the center in the main scanning direction of the recording paper. .

  On the other hand, if the setting of “print position at mismatch” is not “centering” in step S305, the process proceeds to step S306, and the image of the JPEG file is printed left justified. That is, first, the CMYK binary data is generated by decompressing the JPEG file by the image processing unit 107 and performing appropriate image processing. Then, the print start position is set for the recording unit 109 so that the color image is arranged at the left end of the recording paper, and then printing is executed.

  As described above, according to the present embodiment, when a JPEG file is received, even if the main scanning size declared on the communication protocol differs from the main scanning size declared on the JPEG file. By enabling the main scan size of the JPEG file, the image of the received JPEG file can be accurately decompressed and printed.

  In addition, since the user can set the print position of the JPEG image on the recording paper, the operability is further improved.

  Note that the compression method in the present embodiment is not limited to JPEG, and may be a compressed image file in another format as long as information on the number of pixels in the main scanning direction can be added.

  If the “print position at mismatch” is not set to “centering”, it is possible to print the JPEG file right-justified.

Second Embodiment
Hereinafter, a second embodiment according to the present invention will be described. Since the configuration of the color facsimile apparatus in the second embodiment is the same as that of FIG. 1 shown in the first embodiment, description thereof will be omitted. Further, the memory configuration of the nonvolatile RAM 104 is the same as that in FIG. 2, and an area 201 “print position at mismatch” is provided, and either “left pawl” or “centering” is selected by the user operation on the operation unit 105. It can be set.

  The second embodiment is characterized in that, in addition to the first embodiment described above, a recording paper that appropriately enables printing according to the main scanning size of the JPEG file is selected.

  FIG. 4 is a flowchart showing a print process for one page when a color image is received in the second embodiment. A program for realizing the process shown in the flowchart is stored in the ROM 102, and the program shown in the flowchart of FIG. 4 is realized by the main control unit 101 reading the program onto the RAM 103 and executing it.

  In step S2301, it is determined with reference to header information, for example, whether or not the document to be printed, that is, the received file is JPEG-encoded. If the file is not a JPEG-encoded file, the process proceeds to step S2302 as an MR-encoded file, and the communication main scan size declared in the DCS is validated.

  Next, in step S2303, a recording sheet that matches the recording sheet size declared in the communication protocol is selected from the recording sheets of a plurality of sizes set in the recording unit 109. Here, the recording paper size declared in the communication protocol is based on the maximum recording length indicated in DCS.

  In step S2304, the received file is decompressed and the image processing unit 107 performs image processing to generate binary data of CMYK so that the color image is arranged at the center of the selected recording sheet in the main scanning direction. Set the print start position and print.

  On the other hand, if the received file is a JPEG encoded file in step S2301, in step S2305, the main control unit 101 matches the communication main scan size and the file main scan size as in the first embodiment described above. It is determined whether or not. If they match, the process advances to step S2302, and after the communication main scanning size is validated as described above, printing is performed with an image arranged in the center of the recording paper in steps S2303 and S2304.

  On the other hand, if it is determined in step S2305 that the main scanning size is different, the process advances to step S2306 to validate the file main scanning size. As a result, the image of the received JPEG file is accurately decompressed and printed.

  Subsequently, in step S2307, the communication main scan size is compared with the file main scan size. If the communication main scan size is larger, the process proceeds to step S2308, and is set in the recording unit 109 as in step S2303 described above. Among the recording papers of a plurality of sizes, the recording paper that matches the recording paper size declared by the DCS on the communication protocol is selected.

  Subsequently, in step S2309, it is determined whether or not the “mismatch print position” setting on the nonvolatile RAM 104 is “centering”. If it is “centering”, the process advances to step S2304. After the JPEG file is decompressed and converted into CMYK binary data by the image processing unit 107, the print start position is set so as to be arranged in the center of the recording paper in the main scanning direction. , Print.

  On the other hand, if the “mismatch print position” setting is not “centering” in step S2309, the process advances to step S2310, and the image processing unit 107 decompresses the JPEG file and performs image processing to generate CMYK binary data. The print start position is set so that the color image is arranged at the left end of the recording paper, and printing is performed.

  If the communication main scanning size is smaller than the file main scanning size in step S2307, the process proceeds to step S2311 and declared on the communication protocol in a plurality of sizes of recording sheets set in the recording unit 109. It is checked whether there is a recording sheet having a main scanning length larger than the recording sheet size, that is, a recording sheet capable of printing the received JPEG file at the same magnification.

  If there is an applicable recording sheet, in step S2312, the recording sheet, that is, a recording sheet having a main scanning length larger than the recording sheet size indicated by the DCS is selected as a recording sheet to be actually printed. Subsequently, in the processing after step S2309, according to the setting of “print position at the time of mismatch” on the non-volatile RAM 104 as described above, printing with the same size as the JPEG file is executed.

  On the other hand, if there is no applicable recording paper in step S2311, the process proceeds to step S2313. In step S2313, a recording sheet that matches the recording sheet size indicated by the DCS is selected. Then, the image processing unit 107 generates CMYK binary data by performing image processing including reduction processing in the main scanning direction after decompressing the JPEG file, and then on the selected recording paper so that no color image is lost. Print to.

  Here, an example of the image reduction method in step S2313 will be described. First, a simple thinning process can be considered. For example, after decompressing the received JPEG file, the pixels are deleted at a constant rate so that the image is not lost, that is, the number of pixels that can be printed within the main scanning size of the recording paper. If binarization processing is performed thereafter, the image can be reduced without deteriorating the image quality.

  As a reduction method, any other method such as a pixel interpolation method can be applied.

In general, when the resolution of the file is different from the print resolution of the recording unit 109, for example, the resolution of the received image is 200 dpi, but when the recording unit 109 supports only the resolution of 360 dpi, the image processing unit 107 , The received image is scaled to 1.8 (360/200) times and then passed to the recording unit 109, whereby the same size printing of the received image is realized. So, this magnification is
(Print resolution / Received image resolution)
× (number of main scanning pixels in the protocol / number of main scanning pixels in the JPEG file)
By doing so, reduced printing can be performed without thinning out images.

  As described above, according to the second embodiment, when the main scanning size declared on the communication protocol is different from the main scanning size declared on the JPEG file, as in the first embodiment described above. In addition, the main scanning size of the JPEG file is validated. Furthermore, if the main scanning size declared in the JPEG file is larger, if there is a recording paper having a main scanning length larger than the recording paper size in the communication protocol, the same-size printing on the recording paper is performed. If there is no such recording sheet, reduced printing is performed on a recording sheet having the same main scanning length as the recording sheet size in the communication protocol. As a result, it is possible to provide the user with prints without image loss.

  As in the first embodiment, right-aligned printing is also possible when the “print position at mismatch” is not set to “centering”.

  <Third Embodiment> The third embodiment according to the present invention will be described below. The configuration of the color facsimile apparatus according to the third embodiment is the same as that shown in FIG. 1 described in the first embodiment, and a description thereof will be omitted. In the third embodiment, it is not necessary to provide the item “print position at mismatch” in the nonvolatile RAM 104.

  In the third embodiment, when the communication main scanning size and the file main scanning size do not coincide with each other, the communication is disconnected and the partner apparatus is notified.

  FIG. 5 is a flowchart showing color image reception processing in the third embodiment. A program for realizing the process shown in the flowchart is stored in the ROM 102, and the program shown in the flowchart of FIG. 5 is realized by the main control unit 101 reading the program onto the RAM 103 and executing it.

  First, in step S1201, the communication control unit 111 monitors a GI (group identification) signal and detects an incoming call. When communication control unit 111 detects an incoming call, it closes the line, and upon detecting a CNG (calling tone) signal from the partner machine, in step S1202, NSF (non-standard function) / CSI (called terminal identification) / DIS ( One of the digital identification signals is sent to the other device. Subsequently, in step S1203, one of the TSI (transmission terminal identification) / DCS (digital command signal) signal from the partner machine is received. Note that the TSI signal may not be sent. When the TSI signal is received, it is stored in the RAM 103. In step S1204, a training signal is received. If the training signal is received correctly, a CFR (reception preparation confirmation) signal is returned. In step S1205, an image signal is received.

  When reception of an image of a block is completed due to reception of an EOM (message end) signal, a PPS-Q (partial page signal PPS-EOM, PPS-MPS, PPS-EOP, or PPS-NULL) signal is received in step S1206. . Subsequently, in step S1207, it is checked whether the received image of the block has been normally received for all frames. If all the frames have not been normally received, a PPR (partial page request) signal is returned in step S1212, and then the process returns to step S1205 to receive again the frame in which the error has occurred.

  If all the frames have been normally received in step S1207, it is checked in step S1208 whether the received document is a color document (JPEG file) based on the content instructed by the DCS signal. If it is a color document, the process advances to step S1209 to check whether the image received in step S1205 is the first block of the page. If it is the first block, the process advances to step S 1210 to analyze the JPEG header portion of the received image and store the setting of the main scanning pixel size in the RAM 103.

  In step S1211, it is determined whether or not the main scanning pixel size defined in the JPEG header of the received image matches the main scanning pixel size calculated from the resolution and main scanning width declared in the DCS. If they do not match, the process proceeds to step S1215, a DCN (disconnect command) signal is sent to the partner machine, and communication ends in error.

  In step S1216, it is checked whether the TSI signal is received together with the DCS signal. If it has been received, an error reason notification process is performed for the partner machine in step S1217, and the reception process is terminated. If the TSI signal has not been received, the reception process is terminated as it is.

  If the document received in step S1208 is not a color document, if the image received in step S1209 is not the first block of the page, and if the file main scan size of the received image matches the communication main scan size in step S1211 In step S1213, an MCF (message confirmation) signal is sent to the counterpart device in order to notify that the image block has been correctly received. Subsequently, in step S1214, it is determined whether or not an image block is continuously transmitted according to the type of the PPS-Q signal received in step S1206. If it is transmitted, the next image block is determined in step S1205. Receive. On the other hand, if the next image block is not transmitted, the reception process is terminated.

  FIG. 6 is a flowchart showing the error reason notification processing in step S1217 described above.

  In step S1301, the communication control unit 111 calls the number indicated by the TSI signal stored in the RAM 103 in step S1203. When the line is connected, a CNG signal is transmitted in step S1302. Next, when a DIS signal is received from the partner machine in step S1303, a DCS signal is sent in step S1304, and then a training signal is sent in step S1305 to confirm the line status.

  In step S1306, it is checked whether or not a CFR has been received from the counterpart device. If no CFR has been received, or if an FTT (training failure) signal has been received, the process returns to step S1304, and a DCS signal is transmitted at a different communication speed.

  When the CFR signal is received in step S1306, the reason for disconnecting the communication is notified to the partner machine in step S1307. Specifically, as shown in FIG. 7, an image describing the reason for cutting is transmitted. This disconnection reason notification image may be encoded in advance and stored in the ROM 102. Further, the disconnect reason notification image may be created, for example, at the time of disconnect reason notification.

  When the transmission of the disconnection reason notification image is completed, a PPS-EOP signal is transmitted in step S1308. Subsequently, when the MCF signal is received in step S1309, the facsimile transmission procedure is completed. Therefore, in step S1310, the DCN signal is transmitted, and the error reason notification process is terminated.

  As described above, according to the third embodiment, when the first block of the JPEG file is received, the JPEG header is analyzed, and the main scan size declared on the communication protocol and the JPEG file are declared on the JPEG file. When the main scanning size is different, the communication is cut off, and the occurrence of the error and the contents thereof are notified to the partner machine. This prevents the transmission side from erroneously recognizing that transmission ended normally even though the reception side cannot print, and further, as the error content, the main scan size of the JPEG file is incorrect. This can be notified.

  <Modification of Third Embodiment> FIG. 8 is a flowchart showing a modification of the reception process in the third embodiment. Also in this modified example, when the communication main scanning size and the file main scanning size are different, the communication is disconnected and notified to the other device, but the JPEG header analysis process is performed as a separate process independent of the communication process. It is characterized by that.

  In FIG. 8, the processes from step S1501 to S1509 are the same as steps S1201 to S1209 shown in FIG.

  In step S1509, if the image received in step S1505 is the first block of the page, the JPEG error flag provided in the RAM 103 is cleared in step S1510, and a JPEG header analysis process executed as a separate process is started. The process proceeds to step S1512. As a result, the JPEG header analysis process and the subsequent JPEG file reception process are executed in parallel.

  In step S1512, it is checked whether or not an error has occurred in the JPEG header analysis process. However, since the JPEG header analysis process has just been activated for the first block of the page, no error has occurred, and the process proceeds to step S1513. Go ahead and send MCF. Subsequently, in step S1514, it is determined whether or not an image block is continuously transmitted according to the type of the PPS-Q signal received in step S1506. If it is transmitted, the next image block is determined in step S1505. Receive.

  Subsequently, the processing from step S1506 to S1509 is performed again. Here, in step S1509, since the received image block is not the first block of the page, the processing proceeds to step S1512, and the already started JPEG header. Whether or not an error has occurred in the analysis process (S1510) is checked based on the JPEG error flag. If an error has occurred, the process advances to step S1515 to send a DCN signal to the partner machine and terminate the communication with an error.

  In step S1516, it is checked whether the TSI signal is received together with the DCS signal. If it has been received, an error reason notification process is performed on the partner machine in step S1517, and the reception process is terminated. If the TSI signal has not been received, the reception process is terminated as it is.

  FIG. 9 is a flowchart showing the JPEG header analysis process activated in step S1510.

  First, in step S1601, the data described in the JPEG header is read and analyzed. In step S1602, it is checked whether there is an error in the contents of the header. If there is an error, the process advances to step S1604 to turn on the JPEG error flag provided in the RAM 103.

  On the other hand, if there is no error in the header contents in step S1602, the process proceeds to step S1603, where the main scanning pixel size calculated from the main scanning pixel size defined in the JPEG header, the resolution declared in the DCS, and the main scanning width is one. Determine whether you are doing it. If they do not match, the process advances to step S1604 to turn on the JPEG error flag. Thus, when the JPEG error flag is turned on, the reception processing routine shown in FIG. 8 can detect the occurrence of a JPEG error.

  As described above, according to the modification of the third embodiment, the JPEG file receiving process and the JPEG header analyzing process are executed as separate processes in parallel, so that the JPEG header analyzing process can be performed even in a slow processing system. The influence on the communication control due to can be avoided, and the overall processing speed is improved.

  In the third embodiment, it has been described that the call is made to the telephone number notified by the TSI signal from the partner machine in the error reason notification process. However, the telephone notified by the caller number notification function is described. It goes without saying that the same effect can be obtained when a call is made to a number.

  Note that the embodiments described above can be combined. For example, when the communication main scanning size and the file main scanning size are different from each other, as shown in the third embodiment, the communication is temporarily disconnected and notified to the partner machine, and the JPEG file is not retransmitted from the partner machine. When a notification or an instruction for forced printing is received, communication can be resumed, and an appropriate recording medium can be selected as shown in the second embodiment, and printing without missing images can be performed.

<Other embodiments>
Note that the present invention can be applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, and a printer), and a device (for example, a copying machine and a facsimile device) including a single device. You may apply to.

  Another object of the present invention is to supply a storage medium (or recording medium) in which a program code of software that realizes the functions of the above-described embodiments is recorded to a system or apparatus, and the computer (or CPU or Needless to say, this can also be achieved by the MPU) reading and executing the program code stored in the storage medium. In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention. Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.

  Furthermore, after the program code read from the storage medium is written into a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the function is determined based on the instruction of the program code. It goes without saying that the CPU or the like provided in the expansion card or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

1 is a block diagram illustrating a configuration of a facsimile apparatus according to an embodiment of the present invention. It is a figure which shows the memory structural example of the non-volatile RAM in this embodiment. 6 is a flowchart illustrating print processing at the time of color reception in the present embodiment. 10 is a flowchart illustrating a printing process at the time of color reception in the second embodiment. It is a flowchart which shows the reception process in 3rd Embodiment. It is a flowchart which shows the error reason notification process in 3rd Embodiment. It is a figure which shows an example of the image which alert | reports the disconnection reason of communication in 3rd Embodiment. It is a flowchart which shows the reception process in the modification of 3rd Embodiment. It is a flowchart which shows the JPEG header analysis process in the modification of 3rd Embodiment.

Explanation of symbols

101 Main control unit 102 ROM
103 RAM
104 Nonvolatile RAM
105 Operation Unit 106 Display Unit 107 Image Processing Unit 108 Reading Unit 109 Recording Unit 110 Drive Unit 111 Communication Control Unit

Claims (9)

An image communication apparatus for communicating image data with another apparatus based on a communication protocol including a declaration of a main scanning size,
Receiving means for receiving from the other device an image file with information that the main scanning size is the first size;
Communication control means for disconnecting communication with the other device when a second size declared as a main scanning size in a communication protocol in communication with the other device relating to the image file is different from the first size;
An image communication apparatus comprising:   The image file is a compressed image file;
  The image communication device includes:
  When the second size is different from the first size, the first size is set as the main scanning size, and when the second size matches the first size, the matching size is set as the main scanning size. Setting means for setting as a scan size;
  Decompression means for decompressing the compressed image file with the main scanning size set by the setting means as the number of pixels per line of the compressed image file;
  The image communication apparatus according to claim 1, further comprising: The communication control means determines whether or not the second size and the first size are different when the receiving means normally receives a part of the image file. Item 3. The image communication apparatus according to Item 1 or 2 . Prior to the communication control unit disconnects the communication, according to any one of claims 1 to 3 wherein the communication to the other device and having an informing means for informing that it is cut Image communication device.   The image communication apparatus according to claim 4, wherein the notification unit notifies that the main scanning size of the image file is not normal. 6. The image communication apparatus according to claim 4 , wherein the notification unit notifies the other apparatus based on a caller number received from the other apparatus. The communication protocol is ITU-T. The image communication apparatus according to claim 1 , wherein the image communication apparatus conforms to 30 Recommendations. The image communication apparatus according to claim 2 , wherein the compressed image file is a JPEG file. A method for controlling an image communication apparatus for communicating image data with another apparatus based on a communication protocol including a declaration of a main scanning size,
A receiving step of receiving an image file with information that the main scanning size is the first size from the other device;
A communication control step of disconnecting communication with the other device when a second size declared as a main scanning size in a communication protocol in communication with the other device relating to the image file is different from the first size;
A control method for an image communication apparatus, comprising:

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