Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modulation method and system for LED driving signal

A technology of LED drive and modulation method, which is applied in the transmission system, electromagnetic wave transmission system, electrical components, etc., can solve the problems of flat and difficult LED bandwidth, and achieve the effect of flat bandwidth and good bandwidth expansion

Active Publication Date: 2022-05-10
NANCHANG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, the embodiment of the present invention provides a modulation method and system for LED driving signals, aiming to solve the problem that it is difficult for traditional equalization technology to achieve flat bandwidth of 100MHz and 10GHz LEDs

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
  • Modulation method and system for LED driving signal
  • Modulation method and system for LED driving signal
  • Modulation method and system for LED driving signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] see also Figure 1 ， Figure 1 The implementation flow chart of a modulation method of LED driving signal provided by the first embodiment of the invention is shown. The method specifically includes steps S01 to S06.

[0071] In step S01, the LED modulation signal is obtained, and the LED modulation signal is divided into multiple target modulation signals according to power.

[0072] Specifically, the LED modulation signal is divided into at least two target modulation signals according to the power. Among them, the more target modulation signals divided according to the power, the better the subsequent modulation effect. It is understandable that if the LED modulation signal has a wide frequency domain but is only divided into two target modulation signals, the final modulation effect will be greatly reduced.

[0073] Step S02: determine the frequency domain to which the multi-channel target modulation signal belongs, and extract the frequency band parameters of each channe...

Embodiment 2

[0085] see also Figure 2 ， Figure 2 The implementation flow chart of a modulation method of LED driving signal provided by the second embodiment of the invention is shown. The method specifically includes steps S10 to S17.

[0086] In step S10, the LED modulation signal is obtained and divided into multiple target modulation signals according to power.

[0087] It should be noted that the LED modulation signal is divided into equal or unequal multiple power outputs through the power distributor. The power distributor is a multi port network that divides the input signal into equal or unequal power outputs. The circuit topology of any multi-section power divider is as follows: Figure 3 As shown in the figure, it can be seen that the internal resistance of signal source and load is: R S =R=Z 0 ； If it is divided into N equal parts, then Z 0 =Z 1 =…=Z M-1 , the length of each section is 。

[0088] Similarly, the design process and implementation method of unequal power distributor a...

Embodiment 3

[0134] On the other hand, the embodiment of the invention provides a modulation system of LED driving signal, which comprises:

[0135] The power division module is used to obtain the LED modulation signal and divide the LED modulation signal into multi-channel target modulation signals according to power;

[0136] A parameter extraction module for determining the frequency domain to which the multi-channel target modulation signal belongs, and extracting the frequency band parameters of each channel of the modulation signal in their respective frequency domain;

[0137] A frequency domain segmentation module for processing each channel of the modulation signal through a band-pass filter according to the frequency band parameters of each channel of the modulation signal to obtain a multi-channel frequency domain modulation signal;

[0138] An equalization module for frequency domain equalization of the multi-channel frequency domain modulation signals through a filter to obtain a ...

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 provides a modulation method of an LED driving signal, which includes obtaining an LED modulation signal, and dividing the LED modulation signal into multiple target modulation signals according to power; determining the frequency domains to which the multiple target modulation signals respectively belong, and extracting each modulation The frequency band parameters of the signals in their respective frequency domains; according to the frequency band parameters of each modulation signal, each modulation signal is processed through a band-pass filter to obtain multiple frequency domain modulation signals; the multiple frequency domain modulation signals are passed through The filter performs frequency domain equalization to obtain multi-channel gain modulation signals; performs power compensation on multi-channel gain modulation signals respectively to obtain multi-channel power compensation modulation signals; synthesizes multiple power compensation modulation signals to obtain the output bandwidth for driving LEDs drive signal for a flat light source. The method provided by the invention effectively solves the problem of flat bandwidth of 100MHz and 10GHz order LEDs.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a modulation method and system of LED driving signal. Background technology [0002] Light emitting diodes (LEDs) are widely used in the fields of lighting, indication and display. If the light source of LED is intentionally modulated, it can realize LED based communication, detection, imaging, positioning, recognition and sensing while lighting, indication and display, so as to make the application of led more extensive. [0003] In the prior art, the luminous intensity of the LED is randomly and high-speed modulated with the information transmitted by the band, and the wireless communication in the lighting process can be realized; Intentionally controlling the light emission and intensity adjustment mode of LED can realize target detection, imaging, positioning, recognition and sensing. The above applications are closely related to the real-time modulation bandwidth ...

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 Patents(China)
IPC IPC(8): H04B10/564H04B10/58H04B10/54H04B10/50
CPCH04B10/564H04B10/58H04B10/502H04B10/541
Inventor 王玉皞许林王正海陈煊邦菅杰段贡献闵汉红陈俊源
Owner NANCHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com