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Methods and apparatuses for information transmission/obtaining by using visible optical signal

A technology for signal transmission and visible light, applied in the field of visible light communication, which can solve the problems of limited application scenarios and excessive exposure of stripe width pixels.

Inactive Publication Date: 2014-11-26
ZHUHAI HENGQIN GREAT AIM VISIBLE LIGHT COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the following limitations: In the image output by the image sensor, the obtained stripe width is easily affected by the overexposure of pixels
The inventors found that although this type of device can be used to receive informa

Method used

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  • Methods and apparatuses for information transmission/obtaining by using visible optical signal
  • Methods and apparatuses for information transmission/obtaining by using visible optical signal
  • Methods and apparatuses for information transmission/obtaining by using visible optical signal

Examples

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Embodiment 1

[0091] According to a first aspect of the present invention, a method for transmitting information using a visible light signal is provided. figure 1 is a flowchart of a method 100 for transmitting information using a visible light signal according to an exemplary embodiment of the present invention.

[0092] Such as figure 1 As shown, the method 100 starts at step 101, based on the information to be transmitted, the driving signal of the light source is modulated, the modulated driving signal is used to drive the light source to emit a visible light signal, and the modulated driving signal includes one or more first A signal portion and one or more second signal portions, the first signal portion includes sequentially arranged low levels and high levels, and the second signal portion includes sequentially arranged high levels and low levels.

[0093] According to an exemplary embodiment of the present invention, the light source may be any light source that emits a visible l...

Embodiment 2

[0117] According to a second aspect of the present invention, a method for transmitting information using a visible light signal is provided. Figure 5 is a flowchart of a method 200 for transmitting information using a visible light signal according to an exemplary embodiment of the present invention.

[0118] Such as Figure 5 As shown, the method 200 starts at step 201, based on the information to be transmitted, the driving signal of the light source is modulated, the modulated driving signal is used to drive the light source to emit a visible light signal, and the modulated driving signal includes one or more first One signal part, one or more second signal parts, one or more third signal parts and one or more fourth signal parts, the first signal part includes low level, high level, high level level and high level, the second signal part includes high level, low level, high level and high level arranged in sequence, and the third signal part includes high level, high le...

Embodiment 3

[0142] According to a third aspect of the present invention, a method 300 for obtaining information from a visible light signal is provided, Figure 8 is a flowchart of a method 300 for obtaining information from a visible light signal according to an exemplary embodiment of the present invention.

[0143] Such as Figure 8 As shown, the method 300 starts at step 301, and an image is obtained from a visible light signal emitted by a light source, the visible light signal is driven by a modulated driving signal to drive the light source to emit, and the modulated driving signal includes one or more first A signal portion and one or more second signal portions, the first signal portion includes sequentially arranged low levels and high levels, and the second signal portion includes sequentially arranged high levels and low levels.

[0144] According to an exemplary embodiment of the present invention, as described in detail above in relation to the method 100, the visible light...

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Abstract

The invention discloses methods and apparatuses for information transmission/obtaining by using a visible optical signal. The method for information transmission comprises: on the basis of to-be-transmitted information, a drive signal of a light source is modulated, wherein the modulated drive signal is used for driving the light source to emit a visible optical signal and includes one or more first signal portions including low and high levels successively arranged and one or more second signal portions including high and low levels arranged in sequence; and according to the modulated drive signal, the visible optical signal is emitted to transmit information that corresponds to one or more first image portions and one or more second image portions, wherein the one or more first image portions and one or more second image portions are contained in an image obtained from the visible optical signal, the first image portions include dark and bright fringes arranged in sequence and correspond to the first signal portions, and the second image portions include bright and dark fringes arranged in sequence and correspond to the second signal portion.

Description

technical field [0001] The present invention relates to the field of visible light communication, in particular to a method and a device for transmitting information / obtaining information from visible light signals. Background technique [0002] Visible light communication is a communication technology that uses changes in visible light (color, intensity or position) to transmit information. Specifically, the information to be transmitted is first encoded into a digital signal; then the digital signal is used to modulate the duration or frequency of the driving current or driving voltage of the light source, so that the light source flickers at high frequency. [0003] A communication technology based on visible light, which uses the characteristics of the image sensor to read image information line by line in time division, by modulating the driving current or driving voltage of the light source, to be precise, by changing the low level of the driving current or driving vol...

Claims

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Application Information

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IPC IPC(8): H04B10/116
Inventor 郭成胡洪
Owner ZHUHAI HENGQIN GREAT AIM VISIBLE LIGHT COMM TECH
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