【摘要】 为解决普通LED旋转屏显示色彩单一的缺陷,根据时间混色法利用单片机和三色LED设计了一种4 096色LED旋转屏。该旋转屏上的像素颜色编码为12 bit数据,通过4种亮度不同的帧的叠加,实现RGB每种颜色的16级灰度;利用在相邻两列LED显示间隙插入黑时隙的方法,降低了LED显示屏横向显示拖影等问题。经过实测验证表明,系统稳定、显示效果良好。更多还原

【Abstract】 In order to solve the single-color defect of common rotary LED screen display,the paper presents a design of 4096 color LED POV based on MCU and three-color LED by the principle of temporal mixed color. The color of the pixels is coded with 12 binary digits,and each 16 gray-scale levels of R /G /B is achieved by superposition of 4 frames which have different brightnesses. In addition,the paper presents a way to mitigate the image trails by inserting a dark time slot between the time intervals of displaying two adjacent pixels. Experiments show that the system is stable and has good display effect.更多还原