KR100223001B1 - Communication time reducing method - Google Patents

Abstract

The present invention relates to a communication time shortening method in a facsimile system, and more particularly, a communication time shortening method by shortening the teaching time by not transmitting and receiving non-standard commands repeatedly transmitted every page when a document having multiple pages is transmitted and received. It is about.

The present invention includes a first step of comparing whether a command to be transmitted and received is a non-standard command or a telephone number related command; A second step of determining whether the commands to be transmitted or received have previously requested to be transmitted; A third step of deleting commands, which have been transmitted and received, determined in the second step from a transmission request command buffer; And a fourth step of creating related information of various commands corresponding to the third step and transmitting and receiving a protocol command.

As described above, the present invention provides a communication time between terminals by not transmitting / receiving a repetitive non-standard command and a telephone number related command generated every page when the original page is transmitted after the first page of the original system. There is an advantage to increase the transmission efficiency by reducing the.

Description

How to shorten communication time

The present invention relates to a method for shortening communication time in a facsimile system, and more particularly, to reduce communication time by not transmitting and receiving non-standard commands and telephone number related commands repeatedly transmitted every page when a document having multiple pages is transmitted and received. It relates to a method of reducing communication time.

In general, a facsimile system includes a scanner unit for reading an image of a document and converting the document into digital data, a printer unit for outputting the converted data in text form, and a telephone line for transmitting and receiving data with a remote party. Refers to a device having a communication means such as the one integrated to exchange documents.

Hereinafter, the operation of the facsimile used in the present invention will be described with reference to the accompanying drawings.

1 is a hardware block diagram of a typical facsimile system.

As shown, the central processing unit (100) for performing the overall control, such as copying, transmitting and receiving the original in accordance with a predetermined program; A memory unit 107 which stores an operation program, a protocol, and a general control program, and accesses or stores original image data and received data under control of the central processing unit 100; An internal key having a plurality of keys capable of generating key data for setting an operation mode of the system and inputting them to the central processing unit 100 when the key data is generated and displaying the display data of the central processing unit 100. An operating panel (OPE) 105 having a display device; A scanner (104) for scanning an image of an original and converting it into digital data which is binary information and providing the same to the central processing unit (100); A modem 102 which is controlled by the central processing unit 100 and outputs an analog modulated output of the central processing unit 100 and demodulates and outputs an analog receiving input; The communication control is operated under the control of the central processing unit 100 to form a call loop of a telephone line (Tip, Ring) and to interface the signals of the telephone line (Tip, Ring) with the demodulation signal of the modem 102. Unit 101; A printer unit 103 which is an output device for printing original image data read from the scanner 104 and received data via the modem 102 by a control signal of the central processing unit 100; A sensor unit 106 for sensing the remaining amount of recording paper and providing the remaining amount of recording paper to the central processing unit 100; And a speaker 108 generating an alarm when an error occurs by the control signal of the central processing unit 100.

The operation of a conventional facsimile having such a configuration will be described in detail with reference to the accompanying drawings.

Typically, terminal devices that transmit and receive a predetermined message using a data transmission network, such as a facsimile, exchange various control information with each other. At this time, a procedure for exchanging control information between terminal devices as described above is called a protocol. Examples include call selection, call release procedures, and message flow control.

In general, the facsimile must meet the protocol requirements recommended in Regulation T.30 of CCITT, the International Telegraph Advisory Board.

2 is a conventional protocol performing procedure in general facsimile intercommunication. 2 is an example of a case of transmitting a document having multiple pages from a calling terminal called a calling station to a called fax.

As shown in FIG. 2, in a transmission operation for transmitting a plurality of pages, a protocol in the case of changing a mode such as changing a resolution or changing a transmission / reception will be described.

Hereinafter, a description will be given on the assumption that the facsimile system shown in FIG. 1, that is, the symbol terminal, is connected to another facsimile system, that is, the called terminal, via a public switched telephone network. As shown in FIG. 2, a Calling Tone (CNG) command is transmitted from a Calling FAX, and in response thereto, a Called Station Identification (CED) command is transmitted from the Called FAX to the Signed Terminal. If returned, protocol commands corresponding to pre-messages start to be exchanged between the symbol terminal and the called terminal. In this case, the pre-message means a protocol command exchanged between the symbol terminal and the encrypted terminal before transmitting and receiving image data of the original, which is defined in CCITT Regulation T.30.

Therefore, after the CED signal is returned from the called terminal to the symbol terminal, and a non-standard function identification (NSF) command, an optional signal, a receiving terminal identification (CSI) command, a receiving capability (DIS) command, and the like, are transmitted in succession, The symbol terminal transmits a transmission terminal identification signal (TSI) command, a digital command signal (DCS) command, which is a standard signal, and a training check signal (TCF) command. Here, the CSI command and the TSI command refer to a telephone number related command having a telephone number of the receiving terminal and telephone number information of the transmitting terminal, respectively. In addition, the option signal is a signal used to add a special function according to the facsimile product.

Then, the called terminal sends a confirmation to receive command indicating that it has received a TSI command and a training check signal TCF command among these signals to the symbol terminal.

As described above, when the exchange of the pre-message with the encrypted terminal ends, the symbol terminal starts transmitting image data of the original. That is, image data corresponding to one page of the original is transmitted from the symbol terminal to the protected terminal via the communication control unit 101 shown in FIG.

Then, when one page of the document is finished sending, the symbol terminal sends an End Of Message (EOM) command, and after the sender receives the Message Confirmation (MCF) command, A non-standard function identification (NSF) command, which is a normal option signal, a receiving terminal identification (CSI) command, a DIS (receive capability) command, etc., which are standard signals, are continuously transmitted.

Thereafter, when the transmission ends up to the last page of the original to be transmitted, protocol commands corresponding to post messages are exchanged between the terminals. That is, as shown in FIG. 2, End of Procedure (EOP) commands and Message Confirmation (MCF) commands exchange as described above.

After that, if the terminal receives the DCN (Disconnect) command from the symbol terminal, it determines that the communication is terminated and disconnects. If the other terminal receives another command, it repeats the process of exchanging the pre message. .

As described above, when a document consisting of a plurality of pages is transmitted, a non-standard function identification (NSF) command, which is an optional signal, and a receiving terminal identification (CSI) command, which are standard signals, are transmitted by the original receiving side when a subsequent page is transmitted after the first page. Ordinary information such as is repeatedly sent, but sending it again is meaningless.

Normally, telephone number-related commands or non-standard commands are sent again by the symbol terminal when the mode is changed due to the change of the original page due to the change of the original page or when there is a command such as RTN, RTP, PIP, PIN from the terminal to be transmitted. These telephone number-related or non-standard commands are most likely to use the exchanged information when sending the first page of the manuscript.

Therefore, in the facsimile manuscript transmission and reception, there has been a problem that the communication time between the symbol terminal and the called terminal becomes long due to the repeated transmission and reception of the telephone number related command or the non-standard command as described above, resulting in a decrease in transmission efficiency.

Accordingly, an object of the present invention is to solve the above problems, and in the facsimile manuscript transmission and reception, the terminal by not transmitting or receiving some repeated commands when transmitting and receiving the first page of the original and then the second and subsequent manuscripts The present invention provides a method for shortening the facsimile communication time, which reduces the communication time between them.

1 is a hardware block diagram of a typical facsimile system.

2 is a conventional protocol performing procedure in general facsimile intercommunication.

3 is a flowchart for implementing a method for shortening the facsimile communication time of the present invention.

4 is a protocol execution procedure applying the facsimile communication time shortening method of the present invention.

* Explanation of symbols for main parts of the drawings

100: central processing unit 101: communication control unit

102: modem 103: printer unit

104: scanner 105: operation panel

106: sensor unit 107: memory unit

108: speaker

In order to achieve the above object, a communication time shortening method of the present invention includes a method for transmitting and receiving a document having multiple pages between facsimile terminals, comprising: a first step of comparing whether a command to be transmitted or received is a non-standard command or a telephone number related command; A second step of determining whether the transmission request has been previously requested if the commands to be transmitted and received are non-standard commands or telephone number related commands; A third step of deleting commands, which have been transmitted and received, determined in the second step from a transmission request command buffer; And a fourth step of creating related information of various commands corresponding to the third step and transmitting and receiving a protocol command.

Hereinafter, the structure, features, and advantages of the present invention described above will be described in detail with reference to the accompanying drawings.

3 is a flowchart for implementing a method for shortening the facsimile communication time of the present invention.

4 is a protocol execution procedure applying the facsimile communication time shortening method of the present invention.

As shown in Fig. 3, the present invention provides a first step of comparing whether a command to be transmitted and received is a non-standard command or a phone number related command; A second step of determining whether the transmission request has been previously requested if the commands to be transmitted and received are non-standard commands or telephone number related commands; A third step of deleting commands, which have been transmitted and received, determined in the second step from a transmission request command buffer; And a fourth step of creating related information of various commands corresponding to the third step and transmitting and receiving a protocol command.

The operation of the facsimile when the communication time shortening method of the present invention configured as described above is applied will be described with reference to FIG.

First, when the facsimile transmission and reception starts, it initializes non-standard command or telephone number command transmission request flags.

Then, it is determined whether the command to be transmitted or received is a non-standard command or a phone number related command (step 21).

In the former case, the corresponding flags for requesting to transmit a non-standard command or a telephone number related command are set (step 22).

In the case of the latter step 21, step 25 described below is performed.

Thereafter, it is determined whether the command to be transmitted or received has previously requested transmission (step 23).

In the case of the former step 23, the corresponding non-standard command or telephone number related command is deleted from the transmission request command buffer (step 24).

In the case of the latter step 23, step 25 described below is performed.

Thereafter, the relevant information of the various commands corresponding to the command to be transmitted is made, and the protocol command is transmitted and received (step 25).

Referring to the protocol to which the present invention is applied in the aspect of the called terminal receiving the document, the above process will be described.

First, the relevant flags are cleared in step 41 of FIG. 4, and in step 42, a non-standard function identification (NSF) command, a receiving terminal identification (CSI) command, a DIS (receiving capability) command, etc. are received from the called terminal to set transmission request flags. do. The non-standard function identification (NSF) command, which is an option signal, and the receiving terminal identification (CSI) command, which is a standard signal, are transmitted since they have not been transmitted before. Then, image data corresponding to the first page of the original is transmitted. Then, when transmission of the first page is completed, the called terminal sends an End Of Message (EOM) command to the symbol terminal. This again sends a message receipt confirmation (MCF) command to the symbol terminal by procedure 43.

Then, step 44 deletes the non-standard command or telephone number related command previously transmitted in step 42, that is, the non-standard function identification (NSF) command and the receiving terminal identification (CSI) command from the send request command buffer and the DIS (receiving capability) Only commands are sent,

On the other hand, referring to the protocol to which the present invention of Fig. 4 is applied in terms of transmitting an original, before the first page of the original is transmitted, in step 43, a TSI command and a DCS command are symbolized in step 43. Although the terminal is sent to the called terminal, only the DCS (capability) command is sent from the symbol terminal to the called terminal except for the TSI command in step 46 before transmitting the second page.

As described above, the method of shortening the communication time according to the present invention deletes the same repetitive commands, such as telephone number related commands or non-standard commands, generated every page when a document having multiple pages is transmitted and received from the second page from the send request command buffer. By not operating, the communication time, i.e. the connection time between the symbol terminal and the called terminal, is reduced.

As described in detail above, the present invention has been described in detail with respect to preferred embodiments, but those skilled in the art to which the present invention pertains, various embodiments of the present invention without departing from the spirit and scope of the present invention It will be appreciated that the present invention may be modified or modified as described above.

As described above, the present invention provides a communication time between terminals by not transmitting or receiving a repetitive non-standard command or a telephone number related command that is generated every page when an original after the first page of the original is transmitted or received in the fax system. This has the advantage of reducing the transmission efficiency.

Claims (3)

CLAIMS 1. A method for transmitting and receiving a document having multiple pages between a transmitting terminal and a receiving terminal in a facsimile system, comprising: a first step of comparing whether a command to be transmitted or received is a non-standard command or a telephone number related command; A second step of determining whether the transmission request has been previously requested if the commands to be transmitted and received are non-standard commands or telephone number related commands; A third step of deleting the commands that have been requested for transmission determined in the second step from a transmission request command buffer; And a fourth step of creating related information of various commands corresponding to the third step and transmitting and receiving a protocol command. The method of claim 1, wherein the non-standard command is a non-standard function identification (NSF) command transmitted from the receiving terminal to the transmitting terminal. The telephone number related command is a receiving terminal identification (CSI) command transmitted from the receiving terminal to the transmitting terminal and a transmitting terminal identification (TSI) command transmitting from the transmitting terminal to the receiving terminal. How to shorten communication time.

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