JP4182970B2 - Communication terminal device - Google Patents

Description

  The present invention relates to an Internet facsimile machine having a function of printing text data included in a mail when an Internet fax is received.

  In recent years, computer communication networks that connect via a communication line such as a LAN (Local Area Network) and distribute electronic mail via the networked Internet or the like have been widely used. Since the communication procedure of the computer communication using the communication network is different, it is not possible to directly communicate from the facsimile apparatus to the computer communication network.

However, even image data such as a document that is normally transmitted / received by facsimile communication can be transmitted / received via a computer communication network by converting it to an e-mail format. An Internet facsimile machine with an e-mail function that enables transmission and reception has been developed.
In such an Internet facsimile machine, when an e-mail attached with image data is received by the facsimile apparatus, the received image data and text data are printed.

  In such Internet facsimile, if Japanese text part contains JIS X0201 code including half-width kana, ISO-2022-JP which is the encoding method of Japanese text in Internet mail does not have JIS X0201 code. , That part is garbled and printed.

  In other words, ISO-2022 is an international extension method for identifying different character sets or using multiple character sets at the same time. ISO-2022-JP, which is expanding in accordance with ISO-2022, When handling words, for example, when switching from other character codes and using ASCII, ESC (B is prefixed to the ASCII string, and ESC $ B is prefixed when using JIS X0208. I am doing so.

  Half-width kana refers to the katakana character portion of the character set specified by JIS X0201, and the ASCII code defines only the 128-character area represented by 7 bits, and there are control characters. , Latin letters, numbers, punctuation, etc. are arranged. As an extension of this ASCII, language-specific characters may be recorded in the remaining 128-character area expressed in 8 bits. In Japan, as part of this area (AI to DF), Katakana and JIS X0201 It was common to use punctuation marks for Japanese.

On the other hand, protocols such as SMTP for delivering e-mail and NNTP for delivering net news were protocols that use 7-bit character codes, so in Japan it was ruled to use ISO-2022-JP.
However, as mentioned above, ISO-2022-JP does not contain half-width kana, so it cannot contain half-width kana in the message. However, depending on the software, half-width kana was mistakenly included in the message. In some cases, the 8-bit code is transmitted as it is in 8-bit JIS, which causes a problem of garbled characters.

For this reason, general personal computer mailers may support half-width kana uniquely by the following methods.
1) Add ESC (I escape sequence in front of half-width kana.
2) Add control code SO (Shift Out) in front of half-width kana and add control code SI (Shift In) in the back.

FIG. 5 shows an example of text data to which the control code is added, and shows binary data of a message after MIME decoding (a), before MIME decoding (b), and a message.
As shown in FIG. 5C, a control code (Shift Out) 0E indicating the start of the X0201 code and a control code (Shift In) 0F indicating the end of the X0201 code are given before and after the half-width kana message. Yes.

  As described above, a general personal computer mailer supports a half-width kana by executing a specific sequence, but a conventional Internet facsimile apparatus can cope with such a sequence. There was a problem that the part was garbled and printed.

  The present invention has been made in view of the above problems, and even when an e-mail containing text data having a specific sequence of single-byte kana characters is received, it can be printed correctly, and attention must be paid to the sender side. An object of the present invention is to provide an Internet facsimile machine that can prompt the user.

  In order to achieve the above object, an Internet facsimile apparatus according to the first aspect of the present invention is an Internet facsimile apparatus having a control means for receiving an Internet fax and printing the received text data. If a special sequence of half-width kana is found at the time of decoding and the corresponding font is available, the above control means allocates and prints the corresponding font and confirms that the prohibited code is used. It is characterized by returning a warning mail.

  According to a second aspect of the present invention, there is provided an Internet facsimile machine comprising a control means for receiving an Internet fax and printing the received text data. When the received text data is decoded, If a special sequence is found and the corresponding font is not found, the above control means allocates and prints a full-width font and returns an email warning that a prohibited code is used. It is characterized by.

  Further, the Internet facsimile apparatus of the invention according to claim 3 is an Internet facsimile apparatus having a control means for receiving the received Internet fax and printing the received text data. When the received text data is decoded, When a special sequence is found, the control means returns the received mail as unprocessable mail.

  According to the Internet facsimile apparatus of the invention according to claim 1 or claim 2 of the present invention, when a special sequence of half-width kana exists in the text data of the received electronic mail, If the corresponding font is assigned and printed, and if it does not have the applicable font, a full-width font is assigned and printed, so that the text data can be printed correctly and the code prohibited to use An email alerting you that the URL is being used will be sent back to alert the sender of the email.

  According to the Internet facsimile apparatus of the invention according to claim 3 of the present invention, when a special sequence of half-width kana exists in the text data of the received electronic mail, the received mail is returned as an unprocessable mail. Alert the sender of the email.

  Embodiments in which the Internet facsimile apparatus of the present invention is applied to a digital multifunction machine will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a network configuration example of a system including a digital multifunction peripheral, and FIG. 2 is a block diagram illustrating a hardware configuration of the digital multifunction peripheral.

  In the network configuration diagram shown in FIG. 1, 1 is a digital multi-function peripheral, 2, 3, 4,... is there. The digital multi-function peripheral 1 has copy mode, printer mode, and fax mode functions, and also has a mail transmission function, and is connected to the PSTN 5 and the LAN 6. A plurality of personal computers 2, 3, 4.・ ・ Is connected. The LAN 6 is also connected to the Internet network 7, and the digital multi-function peripheral 1 can send and receive electronic mail via the Internet network 7.

  FIG. 2 is a schematic block diagram showing the configuration of the control system of the digital multi-function peripheral 1. As shown in the figure, the digital multi-function peripheral 1 has a CPU 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, and a display. An operation unit 14, a reading unit 15, an image memory 16, a recording unit 17, a codec 18, a modem 19, a network control unit NCU 20 and a LAN interface (I / F) 21, and each unit is connected via a bus 22. Yes.

  The CPU 11 controls each part of the hardware of the digital multi-function peripheral 1 via the bus 22 and executes various programs based on the programs stored in the ROM 12. The ROM 12 performs various programs necessary for the operation of the digital multi-function peripheral 1. And operation messages or character fonts are stored in advance. The RAM 13 is composed of SRAM or the like, and stores temporary data generated when the program is executed, and stores a mail information storage area 23 for storing information of a mail header and a mail text when receiving an Internet fax, and a specific control code. A warning transmission flag storage area 24 is provided for sending a warning mail when an electronic mail having the added text data is received.

  The display / operation unit 14 includes a display unit that displays an operation state of the digital multi-function peripheral 1 and displays operation screens of various functions, and a plurality of keys for operating the digital multi-function peripheral 1. The reading unit 15 includes a reading document placing table such as an auto document feeder (ADF) or a flat bed scanner (FBS), reads a document with a scanner using a CCD or the like, and outputs dot image data.

  The image memory 16 is configured using a DRAM or the like, and stores image data to be transmitted or received image data or image data read by the reading unit 15, and the recording unit 17 includes a printer device such as an electrophotographic system. Print out received data, copy original data, or print data sent from an external personal computer.

  The codec 18 encodes and decodes in accordance with a predetermined protocol. In order to transmit the image data of the read original, the codec 18 is encoded by the MH, MR, or MMR method, and decodes the image data received from the outside. Also, encoding and decoding are also performed in correspondence with the TIFF method, which is an image format generally used as a file that can be attached to an e-mail.

  The modem 19 is connected to the bus 22 and has a function as a fax modem capable of facsimile communication. The modem 19 is also connected to the NCU 20 connected to the bus 22. The NCU 20 is hardware that closes and opens an analog line, and connects the modem 19 to the PSTN 5 as necessary.

  Furthermore, the LAN interface 21 is connected to the LAN 6 and receives data from an external personal computer or a signal from the Internet network 7 via the LAN 6, while transmitting signals and data to the LAN 6. Perform interface processing such as protocol conversion.

  The digital multi-function peripheral 1 has the above-described configuration. When transmitting a facsimile, the image data of the original is read by the reading unit 15, compressed by the codec 18, and stored in the image memory 16. The compressed image data is read from the image memory 16, modulated by the modem 19, and transmitted from the NCU 20 to the communication partner through the PSTN 5. At the time of facsimile reception, the received image data is demodulated by the modem 19, stored in the image memory 16, decoded by the codec 18, and printed by the recording unit 17.

On the other hand, when the digital multifunction peripheral 1 receives an Internet fax, it can also decode and print the received e-mail. Hereinafter, the operation of the CPU 11 when decoding the received e-mail will be described with reference to the flowchart of FIG. To do.
When the CPU 11 of the digital multi-function peripheral 1 receives an Internet fax, it starts the decoding process shown in the flowchart of FIG. 3, and first determines whether or not the part to be decoded is a text part (step 101).

  If it is determined that the part to be decoded is not a text part, the CPU 11 decodes the image by the codec 18 and stores it in the image memory 16 in the case of a process corresponding to the part, for example, a TIFF image part (step 102). On the other hand, if it is determined that the part to be decoded is a text part, the CPU 11 starts decoding one part (step 103), decodes one byte, and stores it in the RAM 13 (step 104).

  Next, the CPU 11 determines whether or not the decoded data is a half-width kana control code (step 105). When a half-width kana control code, for example, the control code SO (Shift Out) is found, the CPU 11 stores a warning transmission flag in the RAM 13. After setting the flag of the area 24 to 1 (step 106), it is determined whether or not a half-width kana font is possessed (step 107). When the half-width character font is stored in the ROM 12, the CPU 11 assigns the half-width font to the decoded character until the control code SI (Shift In) is found (step 108), and the half-width character font is stored in the ROM 12. If not, a full-width font is assigned to the character (step 109).

If the font is assigned in step 108 or 109, or if the half-width kana control code is not found in step 105, the CPU 11 determines whether or not one part is completed (step 110). If it is determined that the part has not ended, the process returns to step 104 to decode the next 1 byte.
If it is determined in step 110 that one part has been completed, or if a part other than the text part is decoded in step 102, the CPU 11 determines whether or not the processed part is the final part (step 111) If it is determined that it is not the final part, the next part is processed (step 112).

On the other hand, if it is determined that the part processed in step 111 is the final part, the CPU 11 determines whether or not the flag in the warning transmission flag storage area 24 of the RAM 13 is 1 (step 113), and the warning transmission flag is not 1. If it is determined, the program is terminated, and if it is determined that the warning transmission flag is 1, the warning transmission flag is set to 0 after the warning mail is transmitted (step 114).
That is, for example, the CPU 11 reads out a warning text such as “A mail using half-width kana” has been read from the ROM 12 to create a warning mail, and the created warning mail is converted to the LAN interface 21 and the LAN 6 using the SMTP protocol. To the sender of the mail via

As described above, when a half-width kana control code is found in the received e-mail text data, if it has a half-width kana font, that font is assigned, and if it does not have a half-width kana font, Since full-width fonts are assigned, when text is printed by the recording unit 17 after decoding, the text data is not garbled and can be printed correctly.
At the same time, an e-mail warning that a code prohibited to be used is used is returned, so that the sender of the e-mail can be alerted.

In the above embodiment, when a half-width kana control code is found in the text data of the received e-mail, the half-width or full-width font is assigned and printed. However, the received e-mail can be returned as an unprocessable mail. Hereinafter, the operation of the CPU 11 when a mail is returned will be described with reference to the flowchart of FIG.
When the CPU 11 of the digital multi-function peripheral 1 receives the Internet fax, it starts the decoding process shown in the flowchart of FIG. 4 and first determines whether or not the part to be decoded is a text part (step 201). .

  If it is determined that the part to be decoded is not a text part, the CPU 11 executes processing according to the part (step 202). If it is determined that the part to be decoded is a text part, the CPU 11 starts decoding one part. (Step 203) One byte is decoded and stored in the RAM 13 (Step 204).

Next, the CPU 11 determines whether or not the decoded data is a half-width kana control code (step 205). If it is determined that the decoded data is a half-width kana control code, the received mail is returned as an unprocessable mail (step 206). .
That is, for example, the CPU 11 reads a warning message such as “Mail using half-width kana” from the ROM 12 to create a reply mail, and uses the SMTP protocol to send the mail with the received mail pasted to the created reply mail. The data is transmitted to the mail transmission source via the LAN interface 21 and the LAN 6.

On the other hand, if it is determined in step 205 that it is not a half-width kana control code, the CPU 11 determines whether or not one part has been completed (step 207), and if it is determined that one part has not been completed, the process returns to step 204. Decode the next 1 byte.
If it is determined in step 207 that one part has been completed, or if a part other than a text part is processed in step 202, the CPU 11 determines whether the processed part is the final part (step 208). ), If it is determined not to be the final part, the next part is processed (step 209), and if it is determined to be the final part, the program is terminated.

  As described above, when a half-width kana control code is found in the received text data, the received mail is returned as an unprocessable mail, so that the sender of the mail can be alerted.

In the above embodiment, when a half-width kana control code is found, font assignment, warning mail, etc. are processed. However, when a half-width kana escape sequence is found, the font It is also possible to perform processing such as allocation and warning mail.
In the above-described embodiment, the example in which the Internet facsimile apparatus of the present invention is applied to a digital multi-function peripheral having a copy function, a facsimile function, a print function, a scanner function, etc. has been described. The present invention can also be applied to a facsimile machine that does not have the above.

1 is a diagram illustrating a network configuration example of a system including a digital multi-function peripheral to which an Internet facsimile apparatus of the present invention is applied. 2 is a block diagram illustrating a hardware configuration of a digital multi-function peripheral. FIG. It is a flowchart which shows the effect | action of CPU in the case of decoding a mail. It is a flowchart which shows the effect | action of the other Example of CPU in the case of decoding a mail. It is a figure which shows an example of the text data to which the control code was provided.

Explanation of symbols

1 Digital MFP 2, 3, 4 PC 5 PSTN
6 LAN
7 Internet 11 CPU
12 ROM
13 RAM
14 Display / Operation Unit 15 Reading Unit 16 Image Memory 17 Recording Unit 18 Codec 19 Modem 20 NCU
21 LAN I / F
22 Bus 23 Mail information storage area 24 Warning transmission flag storage area

Claims (3)

An Internet facsimile machine including a control unit that receives Internet fax and prints received text data,
When the received text data is decoded and a special sequence of half-width kana is found and the corresponding font is available, the above control means allocates and prints the corresponding font, and a prohibited code is used. An Internet facsimile machine characterized by replying an e-mail warning that the user is An Internet facsimile machine including a control unit that receives Internet fax and prints received text data,
When the received text data is decoded and a special sequence of half-width kana is found and the corresponding font is not found, the above control means allocates and prints a full-width font and uses a prohibited code. An Internet facsimile machine characterized by returning an e-mail warning that the user is present. An Internet facsimile machine including a control unit that receives Internet fax and prints received text data,
An Internet facsimile machine characterized in that, when a special sequence of half-width kana is found when decoding received text data, the control means returns the received mail as unprocessable mail.

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