Single-point control color mixing method and circuit
By receiving the light signal in the single-point control driving circuit, calculating the illuminance ratio of each channel, positioning the modulation coordinates, and generating the PWM signal, the problems of low dimming accuracy and poor color mixing effect in the prior art are solved, and more stable dimming and improved color mixing effect are achieved.
CN119729939APending Publication Date: 2025-03-28GUANGZHOU YAJIANG PHOTOELECTRIC EQUIP CO LTD
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Patent Information
- Application Number
- CN202411834958.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The existing single-point control driving schemes have problems with low dimming accuracy and poor color mixing effect when dimming, especially when low brightness light is emitted.
Method used
By receiving the light control signal, calculating the brightness coordinates and color coordinates, obtaining the illuminance ratios of each channel, and positioning the modulation coordinates based on the preset illuminance curve to generate each channel of PWM signals to realize the modulation of each color light group.
Benefits of technology
It improves the stability of the dimming signal, avoids the color floating phenomenon caused by brightness changes, and significantly improves the color toning accuracy and color mixing effect.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a single electric control color mixing method and circuit, and the method comprises the following steps: receiving a light control signal, and obtaining a brightness coordinate and a color coordinate of each path based on the light control signal; obtaining the illumination ratio of each path based on the brightness coordinates and the color coordinates of each path; each modulation coordinate is positioned based on each illumination ratio and each preset illumination curve, so that each PWM signal is obtained based on the brightness coordinate and each modulation coordinate; modulated light emitting of each color lamp group is realized based on each path of PWM signal. According to the single-point control color mixing method and circuit provided by the invention, the light control signal is modulated through each path of preset illumination curve, the color mixing precision is improved, the PWM signal is integrated through the integrated OR gate, so that the dimming signal is more stable, the phenomena of color drift and the like caused by brightness change in the modulation period are avoided, and the color mixing effect of single-point control driving is improved.
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