A transmission device and system based on visible light communication technology

Abstract

The present invention provides a transmission device and system based on visible light communication technology. The transmission device includes: a device access module, a computer access module, a first transmission control module and a second transmission control module. In the specific data transmission process of the present invention, the data transmitting end first encodes and modulates the original data to obtain an electrical signal, and then converts the electrical signal into an optical signal, and sends the optical signal to the data receiving end. The data receiving end receives the optical signal, converts it into an electrical signal, and then decodes and demodulates the original data. Therefore, the present invention utilizes the visible light communication technology to realize data transmission, with high transmission efficiency and low cost, and because the physical devices of the data sending end and the data receiving end are different and cannot be substituted for each other, it realizes one-way transmission from the U disk to the computer, It can also realize one-way transmission from the computer to the U disk, which ensures the security of the transmission device.

Description

technical field [0001] The present invention relates to the technical field of visible light communication, and more specifically, to a transmission device and system based on visible light communication technology. Background technique [0002] The existing information transmission methods generally include the following three types: [0003] 1) Normal U (Universal Serial Bus, universal serial bus) disk communication mode. [0004] In the normal U disk communication mode, the U disk is directly connected to the computer to realize the information exchange between the U disk and the computer. Specifically, when the U disk and the computer perform information interaction, the information exchange between the U disk and the computer is bidirectional, that is, not only the information in the U disk can be transmitted to the computer, but also the information in the computer can be transmitted to the U disk. [0005] 2), Software-based one-way U disk transmission device commun...

AI Technical Summary

Problems solved by technology

[0011] However, the inventor of the present invention has found after researching the optical-image one-way file transfer system that the optical-image one-way file transfer system has requirements for the intranet computer configuration at first, that is, the intranet computer must be equipped with a camera, and some intranet The computer itself is not equipped with a camera, so its use is limited

Furthermore, due to the complex transmission process and slow processing speed of the optical-image one-way file transfer system, the file transfer speed in the optical-image one-way file transfer system is about 60KB / minute, while the existing USB2.0 transfer speed is about The transmission speed of USB3.0 is 10 times faster than that of USB2.0. It can be seen that the transmission speed of the optical image one-way file transmission system in the prior art is too slow to meet the current high speed. transmission requirements

Furthermore, the optical-image one-way file transfer system only realizes the one-way transfer of files from the intranet computer to the U disk, and it does not support the transfer function of exporting the files on the U disk to the intranet computer. , the transfer application is limited

Finally, the size of the optical-image one-way file transmission system is generally 225mm×220mm×175mm, which is bulky and inconvenient to place

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