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Unidirectional U disk file transmission equipment based on optocoupler

A technology of file transmission and photoelectric coupling devices, which is applied in the field of computer information security, can solve problems such as no writing function and inability to effectively prevent leaks, and achieve the effect of ensuring information security and realizing quickness

Inactive Publication Date: 2013-12-11
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) Change the operating system and modify the USB-related functions of the computer operating system. The operating system only has the function of reading the U disk and has no writing function.
Existing anti-U disk leakage applications have certain limitations, and cannot effectively prevent the occurrence of leakage incidents

Method used

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  • Unidirectional U disk file transmission equipment based on optocoupler
  • Unidirectional U disk file transmission equipment based on optocoupler
  • Unidirectional U disk file transmission equipment based on optocoupler

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Embodiment Construction

[0048] The technical solution of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0049] Such as figure 1 The block diagram of the system structure of the file transfer device shown:

[0050] ① The underlying hardware of the file transfer device is mainly composed of an ARM processor module (generally using the Linux system, denoted as ARM-Linux), a USB device interface module (USB Device), and an optocoupler module. After the data of the U disk is input into the ARM processor module through the USB host interface, it is input into the USB device interface module through the optocoupler module, and is output by the USB device interface module; a direct connection between the ARM processor module and the USB device interface module is established. Connection for transmitting control signals.

[0051] The main functions of the USB device interface module are as follows:

[0052](1) Data interaction between the optocou...

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PUM

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Abstract

The invention provides unidirectional U disk file transmission equipment based on an optocoupler. The unidirectional U disk file transmission equipment comprises an ARM (advanced RISC machine) processor module, a USB (universal serial bus) equipment interface module and an optocoupler module, wherein the ARM processor module is provided with a USBhost interface connected with a U disk; data of the U disk are input into the ARM processor module through the USBhost interface, then are input into the USB equipment interface module through the optocoupler module and are output through the USB equipment interface module; connection for directly transmitting a control signal is established between the ARM processor module and the USB equipment interface module. According to the unidirectional U disk file transmission equipment, an optoelectronic coupler is creatively added in the data transmission between bottom hardware, and a whole set of unidirectional transmission system is designed, so that files in the U disk can be unidirectionally, securely and reliably led into a computer, and files in the computer cannot be copied to the U disk.

Description

technical field [0001] The invention relates to the field of computer information security, in particular to the computer information security related to the use of mobile storage devices. Background technique [0002] At present, storage media based on U disks have been widely used in enterprises, governments and other various organizations. Due to the dependence of all walks of life on computers, data transmission between computers and between external storage media and computers is becoming more and more frequent. In daily study and work, people are almost inseparable from USB flash drives. However, while enjoying the convenience brought by mobile storage media, computers are facing increasing security threats, and computer information security has become an issue that has attracted widespread attention. Information security issues caused by the use of USB flash drives have also occurred frequently. According to surveys by authoritative organizations such as the Compute...

Claims

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Application Information

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IPC IPC(8): G06F13/38
Inventor 何发智张德军蔡贤涛伍龙华孙俊
Owner WUHAN UNIV
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