System and method for transmitting data in one direction

A technology of data transmission system and data transmission method, which is applied in the direction of transmission system, electrical components, etc., can solve the problems of low data transmission efficiency, achieve the effect of easy to use, satisfy a large number of real-time transmission, and simple structure

Inactive Publication Date: 2011-04-27
RUN TECH CO LTD BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of the current transmission scheme is that the data transmission efficiency is relatively low, and it cannot meet some industries that have high requirements for performance and security, such as video and voice transmission.

Method used

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  • System and method for transmitting data in one direction
  • System and method for transmitting data in one direction
  • System and method for transmitting data in one direction

Examples

Experimental program
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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] in figure 1 In the shutter example shown, the connecting line with arrows represents the direction of data transmission, and the data flow direction between the sending module and the receiving module is one-way.

[0024] In the sending module part, the file reading module reads user data files from the memory disk into the system cache, and reads 1400 byte data blocks to the system cache each time. The data package sending module is responsible for fetching 1400 data from the system cache at a time. Each byte of data is packed into individual UDP data packets, and three pieces of information of the packet sequence number, packet data size, and MD5 code are sequentially written in the destination address field of each UDP, and then the data is sent ...

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Abstract

The invention discloses a system and a method for transmitting data in one direction. The system for transmitting data in the one direction comprises a transmission module connected with an outer net, a receiving module connected with an inner net, and light split equipment through which the two modules are connected, wherein the transmission module also comprises a transmission optical fiber network card for transmitting data to the light split equipment; a data transmission port of the transmission optical fiber network card is connected with the input end of the light split equipment and a data receiving port is connected with an output port of the light split equipment; and the receiving module also comprises a receiving optical fiber network card for receiving data, and a data receiving port of the receiving optical fiber network card is connected with the other output port of the light split equipment. The system has a simple structure, is easy to use, and not only guarantees the complete isolation of the inner net and the outer net, but also can realize the linear high-speed transmission of data, and guarantee safe and reliable data transmission.

Description

Technical field [0001] The invention relates to network data transmission technology, in particular to a one-way data transmission system and transmission method. Background technique [0002] At present, in some occasions with special requirements for security, in order to ensure security, the usual practice is to divide the network into an external network and an internal network. The external network is considered to be insecure, while the internal network is safe and can guarantee data and information. safety. There is no direct communication between the external network and the internal network. The usual data exchange is through manual data transmission between the internal network and the external network, or the use of security products such as firewalls to achieve safe data transmission. However, the disadvantage of the current transmission scheme is that the data transmission efficiency is relatively low, and it cannot meet some industries that have high requirements o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 陈锐刘云华朱贺军蒋晓刚
Owner RUN TECH CO LTD BEIJING
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