JP4667530B2 - RECEPTION DEVICE, TRANSMISSION DEVICE, RECEPTION DEVICE CONTROL METHOD, TRANSMISSION DEVICE CONTROL METHOD, AND PROGRAM - Google Patents

Description

  The present invention relates to an image communication system using an electronic mail apparatus that delivers messages, documents, and the like via a communication network or the like.

  Conventionally, it has been possible to send a message with an image file attached thereto by an electronic mail system. However, in the conventional electronic mail system, the transmission side unilaterally transmits the image file from the transmission side to the reception side on the assumption that the reception side can process the attached image file.

  For this reason, it often happens that the image file attached to the mail received on the receiving side cannot be processed, and each time the receiving side cannot process the image file attached to the e-mail to the sending side. Is sent verbally using a telephone, etc., or an e-mail is sent to notify that the image file attached to the e-mail received from the receiving side cannot be processed ( Hereinafter, it was necessary to change the format of the image file and request the e-mail to be retransmitted.

  Further, in the conventional system, when the image file becomes unprocessable, the transmitting operator takes the trouble of newly creating and transmitting the unprocessable mail. In addition, even if the transmission side receives a notification indicating that processing is not possible, the sender may not know the specific reason for processing and may not know how to deal with it. In addition, the method of delivering the content of the outgoing mail that has become unprocessable to the sender (sender) also has a problem that the network is overloaded if the content of the outgoing mail is large-capacity image data. It was.

  Therefore, when performing e-mail communication, it is conceivable to recognize the processing capability of the image file of the partner machine and send it with the image file attached to the e-mail. Recognizing file processing capabilities requires special e-mail protocols and the e-mail protocol itself must be changed, which can compromise general e-mail communication. In addition, the system change becomes a major one.

  Therefore, the present invention confirms the processing capability of the image file of the counterpart device in advance without requiring a significant system change, and creates and transmits an image file corresponding to the processing capability of the counterpart device when creating the image file. An object of the present invention is to provide an image file communication system using electronic mail and a control method thereof.

  In addition, the present invention makes it possible to clearly recognize the processing required for re-transmission on the transmission side by notifying the other party of the processing capability of the own device when the transmission mail becomes unprocessable. An object of the present invention is to provide an image file communication system by e-mail and a control method therefor which can easily perform image file conversion processing required for transmission.

Receiving apparatus of the present invention is a receiving apparatus having an image processing means for processing an image file attached to the received e-mail, received an image file from the transmitting device receives a first e-mail which is attached Means and the image processing capability of the receiving device as a response to the first email to enable the transmitting device to generate a new image file according to the image processing capability of the receiving device. Transmission means for transmitting a second electronic mail including capability information .

According to another aspect of the present invention , there is provided a transmission device for transmitting an electronic mail, a generation unit for generating an image file, and a first electronic mail attached with the image file generated by the generation unit addressed to the reception device A second e-mail which is a second e-mail transmitted as a response to the first e-mail from the receiving device and includes capability information indicating an image processing capability of the receiving device; Receiving means, and storage means for extracting the capability information from the second e-mail received by the receiving means, and storing the extracted capability information in association with the receiving device, the generating means Generates a new image file to be transmitted to the receiving device based on the capability information stored in the storage means .

  With the above configuration, it is possible to create and transmit an image file that can be processed on the receiving side on the transmitting side.

According to the present invention, a receiving device that receives an e-mail transmits, as a response to the first e-mail from the transmitting device, a second e-mail including capability information indicating the image processing capability of the receiving device. The transmission apparatus can generate a new image file according to the image processing capability of the reception apparatus. In addition, the transmitting device that transmits the e-mail extracts capability information indicating the image processing capability of the receiving device from the second e-mail received from the receiving device, and generates a new image file based on the capability information. Can do.

It is a block diagram which shows the structure of the electronic mail communication system by the Example of this invention. It is a flowchart which shows the image transmission operation | movement of the electronic mail apparatus in the said Example. It is a flowchart which shows the image reception operation | movement of the electronic mail apparatus in the said Example. It is a flowchart which shows the operation | movement of Image Description Fax transmission message preparation in the said Example. It is a flowchart which shows the operation | movement of Image Description capability request message preparation in the said Example. It is a flowchart which shows the operation | movement of Image Description capability response message preparation in the said Example. It is a flowchart which shows the operation | movement of Image Description message confirmation message preparation in the said Example. It is explanatory drawing which shows the example of the Image Description Fax transmission message in the said Example. It is explanatory drawing which shows the example of the Image Description capability request message in the said Example. It is explanatory drawing which shows the example of the Image Description capability response message in the said Example. It is explanatory drawing which shows the example of the Image Description message confirmation message in the said Example. It is explanatory drawing which shows the format of the data written in Image Description in the said Example.

  The mode for carrying out the invention is the following embodiment.

  FIG. 1 is a block diagram showing a configuration of an electronic mail communication system according to an embodiment of the present invention. FIG. 2 is a flowchart showing an image transmission operation of the electronic mail apparatus in the present embodiment, and FIG. 3 is a flowchart showing an image reception operation of the electronic mail apparatus in the present embodiment.

  FIG. 4 is a flowchart showing an operation for creating an Image Description Fax transmission message in the present embodiment, and FIG. 5 is a flowchart showing an operation for creating an Image Description capability request message in the present embodiment. FIG. 6 is a flowchart showing the operation of creating the Image Description capability response message in this embodiment, and FIG. 7 is a flowchart showing the operation of creating the Image Description message confirmation message in this embodiment.

  FIG. 8 is an explanatory diagram illustrating an example of an Image Description Fax transmission message in the present embodiment, and FIG. 9 is an explanatory diagram illustrating an example of an Image Description capability request message in the present embodiment. FIG. 10 is an explanatory diagram illustrating an example of an Image Description capability response message according to the present embodiment. FIG. 11 is an explanatory diagram illustrating an example of an Image Description message confirmation message according to the present embodiment. FIG. 12 is an explanatory diagram showing the format of data written in Image Description.

  First, based on FIG. 1, the structure of the system in a present Example is demonstrated. In FIG. 1, an e-mail device 1 is a transmission-side device that transmits an image, and an e-mail device 2 is a reception-side device that receives an image. The e-mail server 3 performs transmission / reception of mail on the transmission side 1, and the e-mail server 5 performs transmission / reception of mail on the reception side 2. The Internet 4 carries emails between the email servers 3 and 5.

  The transmission side 1 also includes a scanner unit 6 that reads a document, an image read processing unit 7 that encodes the read image, converts the image into an image file, and creates a mail, and a transmission process that transmits the mail to the email server 3. Unit 8, reception processing unit 9 that receives mail from the email server 3, destination capability received by email, destination capability processing unit 10 for processing, destination capability stored for each destination, destination The counterpart capability storage unit 11 for taking out the counterpart capability according to the timing and a clock unit 20 for performing various timings.

  On the other hand, the receiving side 2 receives a mail from the email server 5, a reception processing unit 12, an image file processing unit 13 that extracts and decodes an image file in the mail, a printer unit 14 that prints out an image, When the image file processing unit 13 cannot process, an unprocessable notification unit 15 that creates an error notification message, a self-function notification unit 16 for notifying the user's own function by e-mail, and mail is sent to the e-mail server 5 And a clock unit 21 that performs various timings.

  Next, an overview of the overall operation of the system configured as described above will be described. First, an image read by the scanner unit 6 on the transmission side 1 is converted into a message by the image reading processing unit 7. Then, the transmission processing unit 8 converts the message into a transmission mail and delivers it to the email server 3. The e-mail server 3 delivers the outgoing mail via the Internet 4 to the e-mail server 5 to which the destination belongs.

  The email server 5 sends a mail to the receiving side 2, and the mail is delivered to the reception processing unit 12. If no inconvenience occurs as a result of the image processing in the reception processing unit 12, the image file is printed out by the printer unit 14 on the reception side 2. Here, a message confirmation message is created by the unprocessable notification unit 15, the own function is added by the own function notification unit 16, converted to mail by the transmission processing unit 17, and transmitted to the email server 5.

  Further, if any inconvenience occurs as a result of the image processing in the reception processing unit 12, the processing disabling notification unit 15 cannot process the transmission message ID of mail that cannot be processed and the reason why processing cannot be performed as information. A notification mail is created, converted into mail by the transmission processing unit 17, and transmitted to the email server 5.

  The e-mail server 5 delivers the mail to the e-mail server 3 to which the destination belongs via the Internet 4. The e-mail server 3 sends a mail to the transmission side 1, and this mail is delivered to the reception processing unit 9. The reception processing unit 9 interprets the mail and performs necessary processing.

  The above configuration is shown to clearly distinguish the main functions of the transmission side 1 from the main functions of the reception side 2. In an actual electronic mail apparatus, the transmission side 1 and Both functions of the receiving side 2 are shared.

  In FIG. 1, general-purpose components such as a CPU and a memory, which are basic functions of the electronic mail apparatus, are omitted. Of course, these are also included, and each operation described below is performed in the memory. It is assumed that it is executed by the CPU according to the stored control program.

  As a control program executed by the CPU, a program stored in various storage media such as a floppy disk, a hard disk, or a CD-ROM may be used in addition to a case where the program is previously stored in a dedicated memory (ROM). The control programs stored in these can be read out by a reading device (not shown) provided in the electronic mail apparatus, and can be read and executed by the CPU.

  Here, the configuration of the image file attached to the mail will be described.

  The format of the image file used in the present embodiment is a TIFF file, and the image is stored in a format determined by TIFF. The TIFF file is a file format for a PC (personal computer) developed by Aldus, USA. Details of this format are omitted in this embodiment.

  In TIFF, an image comment can be added in the Image Description. In this comment part, Tag is 270 (10EH) and Type is ASCII. When Type is ASCII, a string ending with Null can be stored. Data necessary for capability exchange is stored in ASCII format.

  In the following, a part newly defined in the embodiment of the present invention in the TIFF file will be described.

First, as shown in FIG. 12, in the image description format, the keyword image / ITUFax indicating the capability exchange data is placed at the head.
(1) Message type In the next MessageType, the message type is displayed. Specific values are as follows.

MsgType = 0: Fax transmission MsgType = 1: Capability request MsgType = 2: Capability response MsgType = 3: Message confirmation (2) The transmission message ID is an identification number assigned by the transmitter, and TxMsgID = plus 10 digits It is a decimal number.
(3) The received message ID is a message ID for a polling request, and RspMsgID = decimal number with a maximum of 10 digits.
(4) The transmission Fax number indicates the Fax number of the transmitter, and is stored when the message type is 1. It is expressed in the format of TxFaxNo = (actual fax number).
(5) The received fax number indicates the fax number of the receiver, and is stored when the message type is 2. RxFaxNo = (actual fax number).
(6) The completion code is for transmitting the communication result, and is stored when the message type is 3. CompCode = 0 indicates normal, and CompCode = 1 indicates an error.
(7) Page reception status Indicates whether the received page was received correctly. In binary data, 0 indicates normal and 1 indicates an error. Hexadecimal display in octets and send by ASCII.
The LSB of the first octet indicates the first page.

For example, when PageRecSts = 0C, “00001100” is obtained, indicating that pages 3 and 4 are errors.
(8) T.W. 30 signal is the T.30 of ITU-T. The 30 signal names are used as keywords, and the contents of the FIF are appended after = in hexadecimal notation. Displayed in LSB first in octets.

  For example, when DIS = 00C200, bits 10, 15, and 16 of the DIS FIF are 1.

  In the frame configuration as described above, the image file is transmitted by mail in the following steps 1 to 4.

(Step 1)
Before the original is read on the transmitter side, a message type 1 capability request is transmitted by e-mail in order to check the receiving capability of the partner device. At this time, the capability of the aircraft is also sent by DIS =. FIG. 9 shows an example of the contents described in Image Description in the TIFF file of the capability request.

(Step 2)
The receiver that has received the capability request by email transmits a capability response of message type 2 that teaches the reception capability of the own device by email. The DIS = information sent from the partner device is stored in the partner capability storage unit (omitted from the configuration of the receiving side 2 shown in FIG. 1) for each partner device. FIG. 10 shows an example of the contents described in Image Description in the TIFF file of the capability response.

(Step 3)
Upon receiving the capability response by e-mail, the transmitter reads the document within the range of the capability specified by the receiver and transmits the image data as an e-mail attachment. The DIS = information sent from the partner machine is stored in the partner capability storage unit 11 for each partner machine. FIG. 8 shows an example of the contents described in Image Description in the TIFF file for image data transmission.

(Step 4)
The receiver that has received the fax transmission message by e-mail prints out the image file and transmits a message confirmation to the partner apparatus. The transmitter that receives the message confirmation creates a delivery report. The DIS = information sent from the partner machine is stored for each partner machine.

  FIG. 11 shows an example of the contents described in Image Description in the TIFF file for image data transmission.

  The operation of the electronic mail apparatus configured as described above will be described using the flowcharts shown in FIGS. The following operations are executed by the CPUs of the electronic mail apparatuses 1 and 2.

  First, a description will be given using an operation of storing the capability of the receiver in the transmission side when transmitting an image.

  In FIG. 2, when a destination is input on the transmission side 1 in S201, it is checked whether or not there is the capability of the destination input in the counterpart capability storage unit 11 in S202. If the capability is not stored, a capability request message is created in S213 according to FIG.

  In FIG. 5, a capability exchange keyword is set in S501, and a message type is set to 1 (capability request) in S502. In S503, the time data is read from the clock unit 20, and in S504, the transmission message ID is set from the year, month, day, hour, minute and second of the time data. In step S505, the transmission fax number is set. Using the DIS signal name of 30 as a keyword, it is converted into DIS FIF information and added as information of the outgoing mail.

  Next, returning to FIG. 2, the transmission mail is transmitted in S214. At the time of this transmission, the capability request message created in S213 is sent as e-mail to the e-mail server 3 by the transmission processing unit 8, and further transferred to the e-mail server 5 with the destination via the Internet 4.

  On the receiving side 2, the mail is processed by the reception processing unit 12 according to the flowchart of FIG. 3.

  In the flowchart of FIG. 3, the mail is read from the e-mail server 5 by the reception processing unit 12 in S301, and the type of Image Description in the mail is checked.

  When a capability request message is detected in S309 instead of a Fax transmission message in S302, a capability response message is generated in S310 according to the flowchart of the image description capability response message generation operation shown in FIG.

  In FIG. 6, the capability exchange keyword described above is set in the format of Image Description shown in FIG. 12 (S601), and then message type = 2 (capability response), transmission message ID, transmission fax number, and reception fax number are sequentially set. It is set (S602 to S605), and the capability of the own device is added to the DIS FIF information (S606), and a capability response message is created.

  The created capability response message is sent as e-mail to the e-mail server 5 by the transmission processing unit 17 in step S312, and further transferred to the e-mail server 3 having the destination via the Internet 4.

  Thereafter, the mail is processed according to the flowchart of FIG. That is, the mail is received by the reception processing unit 9 on the transmission side 1 in S215, and after confirming that it corresponds to the transmission message ID requested in S216, if it is determined as a capability response message in S217, S218 Then, the partner capability processing is executed by the partner capability processing unit 10, and the partner capability is stored in the partner capability storage unit 11 in S219.

  The counterpart capability storage unit 11 has a counterpart functional capability storage directory set for each destination, and stores the capability response contents of the counterpart device correspondingly.

  If the transmission message IDs do not match in S216, or if it is not a capability response message in S217, message error processing is performed in S220, and retransmission processing is performed after returning to S214.

  Next, an operation of reading an image on the transmission side 1, transmitting it by designating a destination, and printing out on the reception side 2 will be described.

  In FIG. 2, when a destination is input on the transmission side in S201, it is checked in S202 whether there is data in the destination capability storage unit 11. If there is data, the partner ability is read in S203, and accordingly, the image is read from the scanner unit 6 in S204, encoded in the image reading processing unit 7 in S205, and converted into an image file. The

  Here, a Fax transmission message is created according to FIG. First, the above-described capability exchange keyword is set in the format of Image Description shown in FIG. 12 (S401), and then message type = 0 (Fax transmission) is set (S402).

  Next, time data is read from the clock unit 20 (S403), and a transmission message ID is set from the year / month / day / hour / minute / second of the time data (S404). Next, the transmission fax number is set (S405), and the capability of the own device is added to the information in the FIF of the DIS (S406).

  Further, the reception fax number is set (S405), and the capability of the receiver is added to the information of the FIF of the DIS (S406).

  The fax transmission message created according to FIG. 4 is sent to the email server 3 as mail by the transmission processing unit 8 in S206, and further transferred to the destination email server 5 via the Internet 4.

  Thereafter, on the receiving side 2, the mail is processed by the reception processing unit 12 according to the flowchart of FIG.

  In the flowchart of FIG. 3, the reception processing unit 12 checks the type of Image Description in the mail in S301. When a fax transmission message is detected in step S302, the image file processing unit 13 performs processing in step S303. In step S304, it is checked whether the image file can be processed. If possible, the image is output by the printer unit 14 in step S305. The Then, in S306, according to FIG. 7, message confirmation data indicating that the processing has been normally completed is created and returned to the transmitting side 1.

  In FIG. 7, first, the above-described capability exchange keyword is set in the format of Image Description shown in FIG. 12 (S701), and then message type = 3 (message confirmation) is set (S702).

  Next, a transmission message ID, a transmission fax number, a reception fax number, a completion code (CompCode = 0), and a page reception status set are sequentially set (S703 to S708). Then, the capability of the own device is added to the DIS FIF information (S708).

  If the image file cannot be processed in S304 of FIG. 3 described above, an unprocessable notification process is performed in S307. In S308, the process is not completed normally according to FIG. Create message confirmation data and send it back to the sender 1. This is executed by setting a completion code (CompCode = 1) indicating an error in S706 of FIG.

  The message confirmation message created in this way is sent as e-mail to the e-mail server 5 by the transmission processing unit 17 in S312, and further transferred to the e-mail server 3 with the destination via the Internet 4.

  Thereafter, the mail is processed on the transmission side 1 according to the flowchart of FIG. That is, the mail is received by the reception processing unit 9 on the transmission side 1 (S207), confirmed to correspond to the transmission message ID, and determined as a message confirmation message (S208A, S208B), the completion code and page After confirmation of the reception status (S209, S210), a delivery confirmation report is created (S221). Then, the opponent ability processing is performed and the opponent ability is stored (S222).

  If the message is not a message confirmation message in S208A, or if the transmission message ID does not match in S208B, message error processing is performed, and the process returns to S206 to perform retransmission processing. If an appropriate value cannot be confirmed in S209 and S210, an error retransmission process is performed in S212, and the process returns to S206 to perform the retransmission process.

  As described above, the other party's capabilities are checked and stored in advance, and the image file corresponding to the other machine is transmitted, so that the functions of the transmission side 1 can be fully used and the reception side 2 can be more reliable. High processing is possible.

  In addition, it is possible to clearly notify that there is an unprocessable mail and the reason why the mail cannot be processed, and to deliver the mail to the sender as an error mail that can be edited and retransmitted.

  In the above example, the case where TIFF is used as the image file format has been described, but other file formats such as FlashPix, EXiF, and JFIF can also be used.

1, 2 ... E-mail device,
3, 5 ... Email server,
4 ... Internet,
6 ... Scanner part,
7 Image reading processing unit,
8 ... transmission processing unit,
9: Reception processing unit,
10 ... Destination capability processing department,
11 ... Counterpart capacity storage,
12 ... reception processing unit,
13: Image file processing unit,
14 ... Printer section,
15 ... Processing impossible notification part,
16 ... Self-function notification section,
17 ... transmission processing unit,
20, 21 ... Clock part.

Claims (9)

A receiving device comprising image processing means for processing an image file attached to a received e-mail ,
Receiving means for receiving the first e-mail attached with the image file from the transmitting device ;
In order to enable the transmission device to generate a new image file in accordance with the image processing capability of the receiving device, capability information indicating the image processing capability of the receiving device is received as a response to the first e-mail. Sending means for sending a second e-mail including:
A receiving apparatus comprising:   The receiving device according to claim 1, wherein the transmission unit transmits the second e-mail when the image processing unit cannot process the image file attached to the first e-mail. .   The receiving apparatus according to claim 1, further comprising a printing unit that prints an image based on the image file processed by the image processing unit. A transmission device for transmitting e-mail,
Generating means for generating an image file;
Transmitting means for transmitting the first e-mail attached with the image file generated by the generating means to the receiving device;
Receiving means for receiving a second e-mail that is sent as a response to the first e-mail from the receiving device and includes capability information indicating image processing capability of the receiving device; ,
Storage means for extracting the capability information from the second e-mail received by the receiving means, and storing the extracted capability information in association with the receiving device;
And the generation unit generates a new image file to be transmitted to the receiving device based on the capability information stored in the storage unit. 5. The transmission apparatus according to claim 4, wherein the second e-mail received by the receiving unit further includes information on the processing result of the image file attached to the first e-mail. When the second e-mail notifies that the processing of the image file attached to the first e-mail has failed, the generation unit creates a new image based on the extracted capability information. 6. The transmission apparatus according to claim 5, wherein a file is generated, and the transmission unit transmits a third electronic mail attached with the new image file to the reception apparatus. A control method for a receiving apparatus comprising image processing means for processing an image file attached to a received electronic mail,
A receiving step of receiving a first e-mail attached with an image file from a transmitting device;
In order to enable the transmission device to generate a new image file in accordance with the image processing capability of the receiving device, capability information indicating the image processing capability of the receiving device is received as a response to the first e-mail. A sending step for sending a second e-mail including:
A method for controlling a receiving apparatus. A method for controlling a transmission device for transmitting an electronic mail, comprising:
A generation process for generating an image file;
A transmission step of transmitting the first e-mail attached with the image file generated in the generation step to the receiving device;
A receiving step of receiving a second e-mail that is transmitted from the receiving device as a response to the first e-mail and includes capability information indicating image processing capability of the receiving device; ,
A storage step of extracting the capability information from the second e-mail received in the reception step, and storing the extracted capability information in association with the receiving device;
And in the generation step, a new image file to be transmitted to the reception device is generated based on the capability information stored in the storage step. A program for causing a computer to execute the receiving device control method according to claim 7 or the transmitting device control method according to claim 8.

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