Check patentability & draft patents in minutes with Patsnap Eureka AI!

Visible light high-speed communication method between intelligent terminals

A smart terminal and high-speed communication technology, applied in the field of visible light communication, can solve the problem of low data transmission rate, achieve the effect of solving security, improving bandwidth and data transmission rate, and improving receiving rate

Active Publication Date: 2020-09-01
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of low data transmission rate in the visible light communication method of intelligent terminals, and provide a high-speed visible light communication method between intelligent terminals based on the currently commonly used configurations and modules

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Visible light high-speed communication method between intelligent terminals
  • Visible light high-speed communication method between intelligent terminals
  • Visible light high-speed communication method between intelligent terminals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The use of red, green and blue LED flash can not only enrich the camera effect of the mobile phone, but also provide more channels for visible light communication. In this embodiment, data is sent by red, green and blue LED flashlights, each color corresponds to one bit (one bit of data), and the transmission of 3 bits of data is completed at one time, so that the data transmission rate can be increased to 8 times. At present, the commonly used cameras on mobile phones are all based on RGB sampling sensors (sensors), which support the simultaneous collection of red, green and blue light signals, and this also saves a lot of camera data processing work, and can improve data reception at the same time. and processing rate. figure 2 Among them, the red, green and blue three-color LED flash light is used to emit visible light in three colors of red, green and blue at the same time. Red, green, and blue represent one bit respectively, so that 3-bit data can be sent at one ...

Embodiment 2

[0045] In the current visible light communication technology, data is transmitted only by intensity, such as strong light is 1, weak light is 0 (or strong light is 0, weak light is 1), so that the transmission rate of the flash light of the mobile phone will be greatly limited. Therefore, in this embodiment, different light intensities are used to represent different data, which can realize the expansion of data bandwidth and greatly improve the transmission rate. For example, if the light intensity is divided into 16 levels, the transmission of 4-bit data can be completed at one time, which is equivalent to increasing the transmission rate to 16 times. If the precision of the flash drive chip and the light-sensing chip at the receiving end is high enough, the light intensity can be divided into more levels, and then this multi-value transmission method is adopted to increase the transmission rate to a higher corresponding multiple.

[0046] image 3 The multi-value transmissio...

Embodiment 3

[0048] In this embodiment, three cameras can be used to receive data at the same time, so as to increase the data receiving rate. When a camera is used as the receiving end, the frame rate of the camera is an important factor limiting the transmission rate. At present, the frame rate of commonly used mobile phones is basically 60 frames per second, and some high-end mobile phones can support 240 frames. To solve this problem, first, the pixels of the camera can be reduced, releasing more GPU resources, and further increasing the frame rate and data processing rate; second, using multiple cameras to sample together can increase the receiving rate by a corresponding multiple. Figure 4 The data receiving mode of parallel sampling by three cameras is given in , the flash sends data at 3 times the sampling frequency, and the three cameras complete data sampling in time-sharing. Camera 1 collects the data of the first period, camera 2 samples after a delay of one period, and colle...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a visible light communication method, in particular to a visible light high-speed communication method between intelligent terminals, which is used for visible light communication between intelligent mobile phones. The problem of low data transmission rate in visible light communication of an intelligent terminal is solved. During sending, sending data is modulated into aflash lamp driving control signal according to a specific code, and a flash lamp is controlled to send a visible light signal through an LED driving chip; during receiving, a camera or other light sensing devices receive visible light signals and demodulate and analyze the signals. According to the method, a multi-value sending mode of a plurality of red, green and blue LED flash lamps and / or a plurality of cameras are / is adopted to receive data, so the visible light communication rate between the intelligent terminals can be greatly improved, the security problem of the data is well solved, and part of hardware cost can be reduced.

Description

technical field [0001] The invention relates to a visible light communication method, in particular to a visible light high-speed communication method between intelligent terminals. Background technique [0002] Visible light communication is a new communication method developed in recent years, which transmits information through the light and dark. Visible light communication can replace wireless networks to send or receive signals, and the rate can reach tens to hundreds of megabytes per second. It can also establish a network with the help of existing lighting systems or lighting equipment, and has the characteristics of local signal coverage. The local area network has very good confidentiality. [0003] Now the penetration rate of smart terminals is very high, and the data transmission between smart terminals is becoming more and more frequent. Traditional wireless data transmission between smartphones mainly relies on Bluetooth, WIFI and other technologies. These tr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/116H04B10/516H04B10/524
CPCH04B10/116H04B10/516H04B10/524
Inventor 梁晓祯高佳锐白永林王博
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com