KR100449698B1 - Method for cancelling transmission of facsimile data for removing facsimile data stored to memory of receiving side - Google Patents

Abstract

PURPOSE: A method for cancelling transmission of facsimile data is provided to suspend transmission of facsimile data when selecting a facsimile data transmission cancel function and then to transmit an interrupt signal to a receiving side, thereby removing facsimile data stored to a memory of the receiving side. CONSTITUTION: When a transmission cancel function of facsimile data is selected, a transmission side stops the transmission of the facsimile data. The transmission side transmits an interrupt signal to a reception side. When the interrupt signal is received from the transmission side, the reception side deletes the received facsimile data stored to a memory. The reception side transmits an interrupt recognition signal to the transmission side.

Description

How to Cancel Sending Fax Data

The present invention relates to a method of canceling a fax data when the fax data is transmitted. More specifically, when a fax or multifunction device needs to stop transmission when a fax data is transmitted, the fax data transmission stop function is selected. A method for canceling transmission.

In general, a facsimile is a terminal for data communication such as a document or an image, and is an office automation device that transmits or receives fax data using a public line network. Multi-Function is a multi-function terminal that consists of office automation equipment such as facsimile, printer, scanner, copier, etc. A multifunction terminal called Peripheral (MFP) is used.

In order to transmit / receive fax data, a public telephone network (PSTN) is used for communication, and various control information are exchanged between terminals. This is called a protocol, and the exchange of protocols for communication is performed between the terminals before and after transmission and reception of fax data. The exchange of these protocols will be in accordance with the protocol recommended in CCITT T.30.

When a call path is established with the receiver to send the fax data, the protocol for transmitting / receiving the fax data is exchanged, and then the fax data is transmitted to the receiving side, which transmits the fax data and notifies the receiving side when the transmission is completed. If confirmed, the communication is terminated.

However, the following problem occurs in the conventional transmission of fax data as described above.

(1) When the user notices that another original is being sent instead of the original to be sent during transmission of the fax data, or when another recipient ID number is entered and transmission starts, the fax data is sent to stop it. Canceling cannot delete the fax data already sent.

(2) If the transmitted data is not deleted, security information may leak.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to interrupt the transmission of fax data when the fax data transmission cancel function is selected to cancel the transmission of the fax data. The present invention provides a method for canceling transmission of fax data that can be transmitted to a receiver and delete fax data stored in a memory of the receiver.

1 is a block diagram schematically showing a facsimile according to the present invention;

2 is a flowchart of a communication protocol between a transmitting side and a receiving side according to the present invention;

3 is a flowchart showing the flow of the transmitting side during fax data communication according to the present invention;

Fig. 4 is a flowchart showing the flow of the receiving side during fax data communication according to the present invention.

<Description of the code | symbol about the principal part of drawing>

1: control unit 2: memory

3: operation panel 4: scanner

5: printer 6: modem

7: LIU

A feature of the present invention for achieving the above objects is a method of canceling transmission of fax data during transmission of fax data in a facsimile: if the transmission cancel function of the fax data is selected, the sender transmits the fax data. Stopping step to stop; The transmitting side transmits an interrupt signal to a receiving side; A deleting step of receiving, by the receiving side, the interrupt signal from the transmitting side, the received fax data stored in a memory; And the transmitting side transmits an interrupt recognition signal to the transmitting side.

Optionally, after transmitting the interrupt signal, the transmitting side determines whether to retransmit fax data when an interrupt recognition signal is received from the receiving side; And retransmitting the fax data when the retransmission of the fax data is selected in the determining step.

Hereinafter, a method for canceling transmission of fax data according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a facsimile according to the present invention.

The control unit 1 of the facsimile generally controls the facsimile according to a predetermined program. The memory 2 stores program data, protocol data, and text data, and accesses or stores data under control of the controller 1. The operation panel 3 comprises a display window having a plurality of keys capable of generating key data and inputting them to the controller 1 when key data is generated and displaying the display data of the controller 1. The scanner 4 scans the original and provides the original data to the control unit 1. The printer 5 prints out received fax data, reports, etc. on a recording sheet and outputs them. The modem 6 modulates and outputs the output data to analog under control of the controller 1, and demodulates and outputs the received analog signal. The LIU (Line Interface Unit) 7 is operated under the control of the control unit 1 to form a call path through the public telephone network and to interface the signal output from the modem 6 with the signal input from the public telephone network.

2 is a flowchart of a communication protocol between a transmitting side and a receiving side.

To transmit the fax data, the sender sends a Calling Tone (CNG) signal to form a call path, and a call station identification (CED) signal is received from the receiver to confirm the call path (step A). Once the call path is established, the sending side and the receiving side are preparing steps for transmitting the fax data. Exchange signals such as NSF) (CSI) DIS and (TSI) DCS (step B). Thereafter, a fax message is transmitted in units of pages, and a RTC (Return to Control) signal for controlling transmission confirmation and synchronization maintenance is transmitted. At this time, if a fax data transmission cancel function for canceling transmission of fax data is selected at the sending side, the sending side stops transmitting the fax data and transmits an interrupt signal. The receiving side transmits an interrupt identification signal (Interrupt Identification Signal) confirming receipt of the interrupt signal to the transmitting side (step C). Then, to retransmit, go to the transmission preparation step again and repeat the transmission / reception process. When the transmission of the fax data is completed, the End of Procedure (EOP) and the Message Comfirmation (MCF) signals are exchanged to exchange the end and reception ends of the fax data (step D), and then the sender sends the DCN to disconnect the line. The signal (Disconnect) is transmitted and the communication is terminated (step E).

3 and 4, a method of canceling the fax data transmission according to the present invention will be described in detail by separating the transmitter and the receiver.

First, Fig. 3 is a flowchart showing a step of transmitting fax data at the transmitting side.

A call path is formed so that protocols for transmitting fax data are interchanged via the LIU, and then fax data is transmitted (S1). During transmission of the fax data, it is determined whether the cancel function of the fax data transmission is selected (S2). If the cancel function is not selected, it is determined whether the transmission of the fax data is completed (S3), and the communication ends after the transmission is completed. . When the fax data transmission cancel function is selected, transmission of the fax data is stopped (S4), and an interrupt signal is sent to the receiver (S5). After that, after the interrupt recognition signal is received from the receiver (S6), the transmitter determines whether to retransmit the fax data to the receiver (S7). To resend the fax data, insert the correct original to be sent again and proceed to the transmission step of the fax data (S1).

4 is a flowchart showing a receiving side at the time of transmission of fax data.

A call path is formed to exchange protocols, and then fax data is received (S8). The receiving side determines whether an interrupt signal is received while receiving the fax data (S9). If the interrupt signal is not received, the receiving side determines whether the reception is completed (S10), and terminates the communication after the reception is completed. When the interrupt signal is received, the receiving side deletes the fax data received from the transmitting side and stored in the memory (S11), and transmits an interrupt recognition signal confirming reception of the interrupt signal to the transmitting side (S12). Thereafter, it is determined whether the fax data is re-received (S13). If the fax data is re-received, the process proceeds to the step of receiving the fax data (S8).

Therefore, when sending fax data, when another document is being sent or when the fax data is incorrectly transmitted by entering a different receiving party identifier number, the sender selects the cancel fax data transmission function to cancel the transmission of the fax data. By stopping the data transmission and sending an interrupt signal, it is possible to delete unnecessary fax data by deleting the fax data previously transmitted to the receiving side and stored in the memory.

As a result, the method of canceling transmission of fax data according to the present invention has the following advantages.

(1) By canceling this at the time of transmission of the fax data, it is possible to delete the fax data that has already been sent to the receiver, thus preventing unnecessary transmission of the fax data.

(2) It is possible to maintain security by preventing information leakage by deleting already sent fax data.

(3) Unnecessary output of the fax data can be prevented at the receiving end, thereby avoiding waste of recording paper.

(4) In the case of cancellation of transmission due to wrong original transmission, after inserting the correct original to be sent, the original can be re-transmitted through the currently connected communication path without having to establish a communication path again. There is no need to make phone calls.

Claims (2)

A method for canceling transmission of fax data while a fax data is being sent from a fax: A step of stopping, by the sending side, of transmitting the fax data when the transmission cancel function of the fax data is selected; The transmitting side transmits an interrupt signal to a receiving side; A deleting step of receiving, by the receiving side, the interrupt signal from the transmitting side, the received fax data stored in a memory; And And the transmitting side transmits an interrupt recognition signal to the transmitting side. The method of claim 1, wherein after transmitting the interrupt signal: A determination step of determining, by the transmitting side, whether to retransmit fax data when an interrupt recognition signal is received from the receiving side; And And in the determining step, retransmitting the fax data if the retransmission of the fax data is selected.

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