KR20070053063A - Fax transmission method using ftp - Google Patents

Abstract

The present invention relates to a fax transmission method using a file transfer protocol, comprising: a third server for establishing a more flexible communication environment by further verifying and requesting an FTP transmission function according to a regular protocol, and automatically providing a separate database; This enables error-free and fast transmission without any additional processing.

The fax transmission method using the file transfer protocol of the present invention comprises the steps of: setting an FTP bit according to a file transfer protocol (FTP) communication capability in a receiving side fax protocol when transmitting and receiving a fax; And checking the FTP setting status at the sending-fax.

FTP, fax, send

Description

Fax transmission method using file transfer protocol

1 is a conceptual diagram illustrating a general fax data transmission and reception protocol.

2 is a block diagram showing a configuration of a multifunction apparatus having a FAX function to which the present invention is applied.

3 is a flowchart illustrating a fax transmission method using the file transmission protocol according to the present invention.

4 is a flowchart illustrating an anonymous process of FIG. 3.

5 is a flowchart illustrating the non-anonymous procedure of FIG.

The present invention relates to a fax transmission method using a file transfer protocol (FTP), and to establish a more flexible communication environment by confirming and requesting an FTP transmission function using a regular protocol, and further to provide a separate database automatically. The present invention relates to a fax transmission method using a file transmission protocol that enables error-free and rapid transmission without separate processing from a server.

A facsimile (fax) is a data communication terminal capable of transmitting and receiving information such as documents and images, and is an office automation device in which fax data is transmitted or received using a public telephone network (PSTN). In recent years, communication by facsimile has become common, and much information is exchanged through facsimile. In order for a facsimile to exchange fax data with a sending or receiving fax, a predetermined communication protocol is required. The communication protocol is called a protocol, which strictly defines the expression format and timing of the information regarding the order of various control information about the communication, and the protocol generally includes establishment of a call and connection.

1 is a conceptual diagram illustrating a general fax data transmission and reception protocol. As shown in Fig. 1, when a calling tone (CNG) signal is sent from a sending fax to a receiving fax, the receiving fax sends a call to tone (CED) in response to the call. .

When the call is connected, the receiving side fax transmits a digital identification signal (DIS) signal to the transmitting side fax. In this case, when the DIS signal is sent, various information about the receiving side path such as the speed, capacity, resolution, paper size, and paper type of the receiving side fax is informed. The sending side fax transmits a digital command signal (DCS; Digital Command Signal), which is a digital setup command corresponding to the standard capacity confirmed by the DIS, to the receiving side fax, and subsequently, the training sequence to the receiving side fax. Send it.

When receiving a training sequence, the received fax receives a CFR (ConFirmation to Receive) signal confirming that the entire procedure for transmitting a message is completed and confirming that message transmission starts if there is no transmission error in the training sequence. Send by fax on the sending side. If the process is successful, the actual data is transmitted. When the message is transmitted, the call is released after performing a post message procedure.

In such a fax (or multifunction device), in general, when sending a large amount of image data to the other party, it is necessary to know whether the other party is connected to the Internet before sending a fax using FTP (File Transfer Protocol). This is possible. Therefore, in this case, the current trend is that it is possible to use various pre-built databases or to have a prior communication with the receiver.

2 is a block diagram showing the configuration of a multifunction peripheral having a fax function to which the present invention is applied. The central processing unit 10 generally controls the multifunction apparatus according to the set program. The system memory 20 stores an operation program and a general control program of the central processing unit 10 and stores data according to program execution of the central processing unit 10. The ROM memory 130 is a nonvolatile memory in which a control program is stored, and the RAM memory 140 is a volatile memory that temporarily stores data and image data according to program execution.

The print engine unit 50 prints data in the system memory 20 or prints data transferred to the printer driver 150 of the host computer. The computer interface unit 90 can print data by transferring print data from the host to the print engine unit 50. The media card 110 allows the host computer to manage the folder of the card and read / write card and image files from the host computer through the media card interface 100 of the multifunction apparatus.

The OPE (Operating Panel) 30 has a plurality of keys and applies key data according to pressing a predetermined key to the central processing unit 10 and displays the operating state of the system by the display data of the central processing unit 10. Displayed by the LCD / LED display 40. It is a part that inputs voice data through C-mic, and the input voice data is converted into digital data in MODEM / DSP and stored in memory.

The scanner 60 converts the analog image data obtained from the image reading sensor into an appropriate digital image format through an image processor 120 and stores it in a memory.

The media card interface unit 100 is a central processing unit for a circuit interface to a media card such as smart media, a memory stick, a compact flash, and a file structure within the card. The control of (10) is performed, and when the image is read from the card, the image processing unit 120 converts the image into an appropriate image manipulation and format t as necessary, and then transfers the image to the host computer, the print engine unit, or the system memory.

The modem 70 transmits various tones and provides a demodulation function related to communication.

The network control unit (NCU) unit 80 is operated under the control of the central processing unit 10 to form a call loop of the telephone line and to interface the telephone line with the modem 70.

In general, when sending a fax, it is common to use a public switched telephone network (PSTN) or obtain an e-mail address or network information of the other party in advance, and set and transmit it accordingly.

In other words, if the size of the scanned image you want to send is relatively large, you have to bear excessive transmission time and communication fee.When you transfer the image to the other party via FTP instead of PSTN, the registration procedure and setting of the local device itself is independent of the existing T.30 protocol. In addition, a large amount of image data can be sent, resulting in a loss of communication opportunity due to relatively long communication time.

The technical problem to be achieved by the present invention is to provide a fax transmission method using a file transfer protocol in order to solve the above-mentioned problems, and to make a more flexible communication environment by confirming and requesting the FTP transfer function by a regular protocol It is an object of the present invention to provide a fax transmission method using a file transmission protocol that enables error-free and rapid transmission without additional processing with a third server which automatically provides a separate database.

Another technical problem to be achieved by the present invention is to check the FTP setting status of the other party through the general G3 protocol when the fax attempts to send the fax of the image data, and to check the FTP setting status accordingly. It is an object of the present invention to provide a fax transmission method using a file transmission protocol that enables transmission and reception of facsimile data more safely than data transmission using a general aerial network by transmitting image data.

In order to achieve the above technical problem, the present invention provides a fax transmission method using a file transfer protocol. setting and transmitting bit); And it provides a fax transmission method using a file transfer protocol comprising the step of checking the FTP setting status in the sending fax.

Preferably, when a call is connected, the receiving side fax sets the FTP bit in a digital identification signal (DIS) signal and transmits it to the transmitting side fax.

Preferably, the receiving side fax sets and transmits the password bit and the FTP bit at the same time through the DIS.

Preferably, when the receiving fax sets the FTP bit in the DIS and transmits it, the sending fax sets the FTP bit in the digital command signal (DCS) and then sends the FTP server address information in the receiving fax. It is characterized by sending an FTP frame.

Preferably, when the receiving side fax sets the FTP bit together with the password bit and transmits it, the transmitting side fax sets the FTP bit and the SID (Sender IDentification) bit in the DCS and transmits the SID together with the set SID.

Preferably, when the receiving side fax receives the set DCS and SID, the receiving side fax transmits the FTP server address, user identification information and password information in FTP, FTP1 and FTP2 frames, respectively.

Hereinafter, a fax transmission method using a file transmission protocol according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In general, Group 3 (G3) fax protocols process a single call in five steps (Phase A, B, C, D, E). Phase A is a call setup step, and Phase B is a step of performing a pre-message procedure, which determines which side to transmit, how much to speed, and how much to size a page. Phase C is an image transmission and message transmission phase, Phase D is a post message procedure, and Phase E is a call release phase. The present invention relates to a fax transmission method using a file transmission protocol in Phase B.

In the fax transmission method using the file transfer protocol according to the present invention, at the time of fax transmission and reception, the receiving side fax sets the FTP bit according to the File Transfer Protocol (FTP) communication capability and transmits it to the protocol. The fax on the side checks the FTP setting. In this case, preferably, when the call is connected, the receiving side fax sets the FTP bit in a digital identification signal (DIS) signal and transmits it to the transmitting side fax.

In addition, the receiving-fax may transmit and set the password bit and the FTP bit at the same time through the DIS. In this case, when the receiving fax sets the FTP bit in the DIS and transmits it, the sending fax sets the FTP bit in the digital command signal (DCS) and sends the FTP server address information in the receiving fax. Send an FTP frame. In this case, when the receiving side fax sets the FTP bit together with the password bit and transmits it, the sending side fax sets the FTP bit and the SID (Sender IDentification) bit in the DCS and transmits the SID together. In addition, when the receiving side fax receives the set DCS and SID, the receiving side fax transmits the FTP server address, user identification information and password information in FTP, FTP1, and FTP2 frames, respectively.

Based on the configuration of the present invention described above with reference to Figure 3 will be described a fax transmission method using the file transfer protocol of the present invention.

In Fig. 3, if the sending fax starts the transmission and is in the phase B step (step 101), the sending fax checks whether the FTP bit is 1 in the DIS transmitted from the receiving fax (step 102). If the FTP bit is 1 in step 102, the process proceeds to step 104 to check if the FTP bit is set in the fax system. If not, the process proceeds to step 103 to perform the normal fax G3 fax procedure. Likewise, if the FTP bit is not set in the fax system in step 104, the process proceeds to step 103 to perform a G3 fax procedure of a general fax. If the FTP bit is set in the fax system in step 104, the flow advances to step 106 to check if the password bit is 1 in DIS.

If the password bit is 1 in step 106, the process proceeds to step 110, SID and FTP bits are set in the DCS, the SID DCS (and TSI) is transmitted in step 111, and the FTP non-anonymous procedure is performed in step 112.

If the password bit is not 1 in step 106, proceed to step 107 to set the FTP bit in the DCS and transmit the DCS (and TSI) in step 108, and then perform the FTP anonymous procedure in step 109.

4 is a flowchart illustrating an anonymous process of FIG. 3. In the FTP anonymous procedure of Fig. 4, it is checked whether FTP has been received (step 117). If FTP is received in step 117, the process proceeds to step 119 to check if the data is valid. If FTP is not received, the procedure of step 108 is repeated three times in step 118. Similarly, if the data is determined to be invalid in step 119, the procedure of step 108 is repeated three times in step 118. If the data is determined to be valid in step 119, the transmission phases D and E of the fax protocol are performed.

5 is a flowchart illustrating the non-anonymous procedure of FIG. In the FTP non anonymous procedure of Fig. 5, it is checked whether FTP, FTP1, FTP2 have been received (step 113). If FTP, FTP1, FTP2 are received in step 113, the process proceeds to step 115 to check if the data is valid. If FTP, FTP1, FTP2 are not received, the procedure of step 111 is repeated three times in step 114. Similarly, if it is determined in step 115 that the data is invalid, the procedure of step 111 is repeated three times in step 114. If it is determined in step 115 that the data is valid, the transmission of the fax protocol Phase D and E.

As described above, in the present invention, a digital identification signal (DIS) indicating a forward capability and an FTP bit indicating FTP capability information are assigned to a DCS (Digital Command Signal). Key elements are the FTP1 and FTP2 frames, a protocol that includes ID and password identification for sending ID and password, and ID and password information. Here, "FTP, FTP_1, FTP_2" is in high-level data link control (HDLC) format, and is composed of letters and numbers used for "server address, user ID, and password" required for FTP server connection, respectively.

 In the present invention, if the receiving side fax sets only the FTP bit without the password bit in DIS and transmits, it means that the sending side fax sets only the FTP bit in the DCS in the meaning of the anonymous FTP transmission step. Send the server Internet Protocol (IP) address to the sending fax machine via FTP frame.

As described above, the present invention is to verify and request the other party's FTP communication function using a regular protocol during fax transmission, to build a more flexible communication environment, and further to register a separate third FTP configuration. It automatically acquires the other party's FTP information without processing and enables fast transmission, and can transmit and receive the facsimile data faster and more safely than the general G3 fax transmission using PSTN. In particular, facsimile transmission is possible with the same processing as the normal G3 protocol, and even when the other party is busy (busy) or communication error, the user is surely notified of the effect, and the safety and confidentiality are improved. It has an effect on what is possible.

In addition, the present invention has the advantage that it is possible to shorten the time required to transmit a large amount of image data to provide more opportunities for fax transmission and reception.

Claims (6)

What is claimed is: 1. A fax transmission method using a file transfer protocol, comprising: setting an FTP bit in accordance with a file transfer protocol (FTP) communication capability in a receiving side fax protocol when transmitting and receiving a fax; And checking the FTP setting status at the sender's fax machine. 2. The method of claim 1, wherein when a call is connected, a receiving side fax sets the FTP bit in a digital identification signal (DIS) signal and transmits the set to the transmitting side fax. 3. The method of claim 2, wherein the receiving side fax sets the password bit and the FTP bit at the same time through the DIS and transmits the same. The method according to any one of claims 1 to 3, wherein when the receiving side fax sets the FTP bit in the DIS and transmits it, the sending side fax sets the FTP bit in the digital command signal (DCS) and then sends it. Then, the fax transmission method using the file transmission protocol characterized in that the receiving side fax to send an FTP frame containing the FTP server address information. 5. The method of claim 4, wherein in the case of transmitting and setting the password bit together with the FTP bit in the receiving side fax, the transmitting side fax sets the FTP bit and the SID (Sender IDentification) bit and transmits the same together with the set SID. A fax transmission method using a file transmission protocol. 6. The method of claim 5, wherein when the receiving side fax receives the set DCS and SID, the receiving side fax transmits the FTP server address, user identification information, and password information in FTP, FTP1, and FTP2 frames, respectively. Fax transmission method using the file transfer protocol.

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