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

Method of realizing tricolor LED lamp color gradual change and device thereof

A technology of LED lights and color gradients, which is applied to lighting devices, lamp circuit layouts, light sources, etc., can solve problems such as color overruns, and achieve a small amount of software programming, a smooth and smooth color cycle gradient process, multi-color display, and color realization. Cycle gradient process and the effect of multi-color display

Active Publication Date: 2016-01-20
KEBODA TECH CO LTD
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although the above method can achieve the effect of gradual change in the actual application process, there is a problem that the color exceeds the limit

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
  • Method of realizing tricolor LED lamp color gradual change and device thereof
  • Method of realizing tricolor LED lamp color gradual change and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] According to an embodiment of the present invention, the method for realizing the color gradient of the three-primary-color LED lamp includes the following steps:

[0035] a. Convert the RGB values ​​of the target color and the initial color to CIE1931 color coordinates (T_x, T_y) and CIE1931 color coordinates (N_x, N_y) respectively;

[0036] b. Calculate the distance Lx between the CIE1931 color coordinates (T_x, T_y) of the target color and the CIE1931 color coordinates (N_x, N_y) of the initial color in the x-axis direction and the distance Ly in the y-axis direction, Lx=|T_x-N_x|, Ly=|T_y-N_y|;

[0037] c. Calculate the CIE1931 color coordinate (M) of the current color according to the preset color coordinate value change speed delta j _x, Mj _y); M j _x=(T_x-N_x)*delta / (L_x+L_y)+M j-1 _x, M j _y=(T_y-N_y)*delta / (L_x+L_y)+M ...

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 discloses a method of realizing tricolor LED lamp color gradual change. The method comprises steps: color coordinates (T_x, T_y) and (N_x, N_y) of a target and an initial color are acquired; Lx=|T_x-N_x| and Ly=|T_y-N_y| are calculated; according to a color coordinate value change rate delta, color coordinates (Mj_x, Mj_y) of the current color are calculated; Mj_x=(T_x-N_x)*delta / (L_x+L_y)+Mj-1_x, and Mj_y=(T_y- N_y)*delta / (L_x+L_y)+Mj-1_y; duty ratios of three paths of PWM control signals outputted to a tricolor LED lamp driving circuit are calculated; and steps of c and d are repeated until |T_x- Mj_x|< / =|(T_x-N_x)*delta / (L_x+L_y)|, and the duty ratios of the three paths of PWM control signals are calculated according to the color coordinates of the target color. The invention also discloses a device for realizing the above method. During the color gradual change process, the color does not exceed a color gamut range.

Description

technical field [0001] The invention relates to a method and a device for realizing the color gradient of a three-primary-color LED lamp. Background technique [0002] With the development of science and technology, the traditional monochromatic LED light source can no longer meet the needs of consumers. The emergence of tri-color LED lights makes up for the lack of monochromatic LED lights, and realizes color changes and diversification well. According to the light mixing principle of the three primary colors, the colors in the color gamut space can be mixed by light sources of three colors: red, green, and blue. In practical applications, the RGB value of the target color is usually given first, and then the three-way PWM signal used to control the three primary color LED lights is obtained according to the RGB value of the given target color, and finally controlled by the three-way PWM signal. Red LEDs, green LEDs, and blue LEDs emit light of different intensities to mi...

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): H05B37/02
Inventor 陈烨萍唐杰史贺
Owner KEBODA TECH CO LTD
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