KR960003273A - Data transmission method for identification and protection of fax image information in fax communication - Google Patents

Abstract

The present invention relates to a data transmission method for identification and protection of fax image information in a fax communication. In the data transmission method between faxes, the receiving fax receives the authentication data according to the authorization of the call connection signal from the sending fax. In the first step of generating and configuring the NSF frame and transmitting it to the sender fax, and in the step, when the NSF frame is transmitted from the receiving fax, the sending fax extracts the authentication data of the receiving fax from the NSS frame to obtain an authentication algorithm. In the second step of driving and when the identity of the receiving side fax is authenticated as a result of the operation of the authentication algorithm in the above step, the sending side fax generates the important data to protect its authentication data and the transmitted fax image information and constitutes the NSS frame. And transmits to the receiving side fax. In this step, the identity of the receiving side fax is A third step of disconnecting the line if not increased; and a fourth step of extracting the authentication data and important data for protecting image information of the fax and driving the authentication algorithm when the NSS frame is transmitted from the sending fax. Step, and if the identity of the sending fax is authenticated in the step, the receiving fax restores the fax image information through the important data for protecting the image information of the fax extracted from the NSS frame, and the authentication algorithm in the step If the sender's fax is not authenticated, it consists of the fifth step of connecting the line. Using the non-standard function of the fax protocol, it transmits the authentication data for the identification of the fax and transmits the fax to the transmission path between the faxes. The identity of incoming and outgoing faxes is transmitted by transmitting important data necessary to protect the image information. This can be done to prevent disputes over the transmission of image information between faxes.

Description

Data transmission method for identification and protection of fax image information in fax communication

As this is a public information case, the full text was not included.

1 is a block diagram of a general fax machine.

2 is a control flowchart of a sending side fax according to the present invention.

3 is a control flowchart of a receiving side fax according to the present invention.

4 is a configuration diagram of a high level data link control (HDLC) frame.

* Explanation of symbols for main parts of the drawings

10: scanning unit 20: output unit

30: central processing unit 40: ROM

50: RAM 60: Modem

70: line matching unit

Claims (1)

A central processing unit 30 for controlling the entire system, a scanning unit 10 for scanning a document to be transmitted according to the control of the central processing unit 30 according to a fax scanning method through a sensor, and the scanning unit 10 A modem unit 60 for demodulating and demodulating data signals recognized through the public telephone network or a fax dedicated network, and a rotation matching unit 70 for matching the modem unit 60 with a public telephone network or a fax dedicated network. , A ROM for storing a program for driving and controlling the central processing unit 30 and a protocol program for facsimile communication, and a RAM for storing data for facsimile communication and data for facsimile control. A data transfer method of a fax machine having a 50 and an output section 20 for outputting image information of a received fax to a recording sheet, wherein the receiving side fax is printed upon application of a call connection signal from the sending side fax. And generates a data composed of NSF frame comprising: a first step of transmitting a fax transmission side; A second step of, when the NSF frame is transmitted from the receiving side fax in the step, the sending side fax extracts authentication data of the receiving side fax from the NSF frame to drive an authentication algorithm; In the above step, if the identity of the receiving fax is authenticated as a result of the operation of the authentication algorithm, the sending fax generates important data to protect its authentication data and transmitted fax image information, and configures it as an NSS frame and transmits it to the receiving fax. A third step of disconnecting the line if the identity of the receiving side fax is not authenticated in the step; A fourth step in which the receiving side fax extracts the authentication data and important data for protecting image information of the fax and runs the authentication algorithm when the NSS frame is transmitted from the sending side fax in this step; In this step, if the identity of the sending fax is verified, the receiving fax restores the fax image information through the important data for protecting the image information of the fax extracted from the NSS frame, and transmits the driving result of the authentication algorithm. And a fifth step of disconnecting the line if the identity of the side fax is not authenticated. 5. A data transmission method for identification and protection of fax image information in a fax communication. ※ Note: The disclosure is based on the initial application.