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Communication method and device

A communication method and channel technology, applied in the field of communication, can solve the problems such as the reduction of the lighting effect of the display screen

Active Publication Date: 2021-08-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, when the two-dimensional code image is displayed on the display screen of the terminal, the intensity of light produced by the liquid crystal pixels on the display screen is usually used to achieve the effect that the user can directly see the two-dimensional code image displayed on the display screen. , but when the display is used as a lighting tool at the same time, the lighting effect of the display will be greatly reduced

Method used

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  • Communication method and device
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Embodiment Construction

[0211] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0212] Due to the light-emitting semiconductor (Light-Emitting Diode, LED) has the characteristics of high performance, small size and long service life, LED is widely used in lighting, signal indication and screen display lamp scenes, and LED also has the characteristics of good time response , so that the human eye cannot recognize the high-speed light and dark flickering light emitted by the LED, and the LED can be used as a signal transmitter of Visible Light Communication (Visible Light Communication, VLC).

[0213] With the wide application of electronic display screens and camera modules on various terminal devices, the optical camera communication (Optical Camera Communications, OCC) technology has a good application prospect. However, the OCC technology in the prior art is not yet mature enough to be effectively applied in actual communication. Therefo...

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Abstract

The present application provides a communication method and device. The sending end converts the data to be sent into a coded image, and sends the first optical rotation and the second optical rotation containing the coded image to the receiving end. The receiving end obtains the first optical rotation and the second optical rotation containing the coded image sent by the sending end, and converts the first optical rotation and the second optical rotation into polarized light in a certain direction that can be collected by the image sensor. According to the polarization of the polarized light The strength realizes the collection of images, obtains encoded images, and then achieves the purpose of data transmission by decoding the encoded images.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and in particular, to a communication method and device. Background technique [0002] With the popularization of mobile terminals such as mobile phones and tablet computers, users can conveniently obtain information contained in a two-dimensional bar code (2-dimensional bar code) through a camera on the mobile terminal. Among them, the two-dimensional code is a black and white graphic distributed on a plane (two-dimensional direction) according to a certain rule with a certain geometric figure, thereby recording the data symbol information; The concept of "0" and "1" bit stream uses several geometric shapes corresponding to binary to represent text and numerical information, which can be automatically read by image input equipment or photoelectric scanning equipment to realize automatic processing of information. [0003] Among dozens of 2D barcodes, the commonly used code system...

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Application Information

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IPC IPC(8): H04B10/116
CPCH04B10/116
Inventor 李强姜彤董晨
Owner HUAWEI TECH CO LTD