Secret writing fax machine

A facsimile machine and secret writing technology, which is applied in the field of facsimile machines, can solve the problems of no security measures and difficulty in discovery

Inactive Publication Date: 2007-10-10
TOEC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the security measures for information transmission in communication are to encrypt the information on the communication line. When the information is transmitted to the receiving terminal, it will be decrypted and printed out. The information is printed on paper, but since the text and the recipient information are in the same area, there is still a great possibility of being leaked during the document delivery proce

Method used

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  • Secret writing fax machine
  • Secret writing fax machine
  • Secret writing fax machine

Examples

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Embodiment Construction

[0024] Further explanation will be given below in conjunction with the accompanying drawings

[0025] As shown in Figure 1, choose a common B4 wide thermal printing mechanism designed with CONEXANT main control chip, use DRAM as fax information storage and a fax machine with PC interface.

[0026] As shown in Figure 11, the paper cutting control circuit of the facsimile machine is connected as follows: terminals 1, 2, and 3 of the current driver D6 are grounded, and terminals 4, 5, 6, and 7 are respectively connected to the cutter control input terminals CUT1, CUT2, CUT3, CUT4 is connected, terminal 9 is connected to +24V and grounded through capacitor C456, terminals 10, 11, 12, and 13 are connected to terminals 4 of motor power switches N5, N7, N4, and N6 through resistors R47, R57, R43, and R50 respectively; motor power Terminals 1, 2, and 3 of the switch N4 are connected to +24V and connected in series with the resistor R43 through the resistor R40, and terminals 5, 6, 7, ...

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Abstract

The invention uses a dedicated steganography paper, a B4 thermofax printer with software and hardware functionalities base on a CONEXANT fax main control chip to print the received message on the dedicated steganography paper through a special data processing approach. The visible area of the steganography paper prints the information about the recipients, and the steganography area of the paper prints the text message; the invention also designs a control circuit for controlling the paper-cutting position.

Description

technical field [0001] The invention relates to a facsimile machine, in particular to a secret writing facsimile machine. technical background [0002] At present, the security measures for information transmission in communication are to encrypt the information on the communication line. When the information is transmitted to the receiving terminal, it will be decrypted and printed out. The information is printed on paper, but since the text and the recipient information are in the same area, there is still a great possibility of being leaked during the document delivery process after the information arrives at the communication terminal and before the recipient reviews it, and It is difficult to find out that with the importance of independent intellectual property rights, commercial secrets, and the need for national security precautions, some national security agencies, discipline inspection departments, and some enterprises, institutions, and individuals are eagerly wai...

Claims

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Application Information

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IPC IPC(8): H04N1/00H04N1/44
Inventor 王丽玲张俊辉高友王娜梅爽宁侯志猛刘雅芳孙芳牛贺群吕前进
Owner TOEC TECH
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