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Loose decryption method and device in visible light communication system

A visible light communication and visible light technology, applied in the direction of optical transmission system, etc., can solve problems such as inconsistency of keys and incorrect decryption at the receiving end

Active Publication Date: 2015-09-09
KUANG CHI INTELLIGENT PHOTONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the key used by the receiving end to decrypt the visible light signal is inconsistent with the key used by the transmitting end to encrypt, resulting in the receiving end being unable to decrypt correctly

Method used

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  • Loose decryption method and device in visible light communication system
  • Loose decryption method and device in visible light communication system
  • Loose decryption method and device in visible light communication system

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the drawings and specific embodiments are only exemplary, and should not be construed as limiting the protection scope of the present invention.

[0031] figure 1A visible light communication system 100 in which the present invention may be implemented is shown. The visible light communication system 100 includes a transmitting end 110 and a receiving end 120 . The transmitting end 110 includes an encoder 111 and a pseudocode signal generator 112 coupled to the encoder 111 . The encoder 111 receives the original communication data, and uses the pseudo-code signal generated by the pseudo-code signal generator 112 to encode the original communication data to generate a scrambled signal. Since the generated scrambled signal is different from the original communication data, it plays the ...

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PUM

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Abstract

The invention provides a loose decoding method in a visible light communication system. The method includes the steps that a receiving end receives visible light signals from a transmitting end. The visible light signals are at least partially encoded with secret keys changing with the change of the state of a state machine of a transmitting end and decoded with one secret key corresponding to the current state of the state machine of the receiving end and the secret key at least corresponding to one state before and / or after the current state of the state machine of the receiving end.

Description

technical field [0001] The present invention relates to a visible light communication system, in particular to a loose decryption method and device in the visible light communication system. Background technique [0002] Visible light communication technology is a new type of wireless optical communication technology developed on the basis of LED technology. Communication is carried out by flickering at a high frequency of the LED light source. The light represents 1, and the absence of light represents 0. The transmission rate of visible light communication is up to gigabits per second. Visible light communication has quite rich spectrum resources, which is unmatched by general wireless communication including microwave communication. At the same time, visible light communication can be applied to any communication protocol and any environment, and the installation of visible light communication equipment is flexible, convenient, and low-cost, suitable for large-scale popu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/85
Inventor 不公告发明人
Owner KUANG CHI INTELLIGENT PHOTONIC TECH