One , LED control function to distinguish
1, the internal and external control
Internal control : control chip inside the lamp , no external controller , connected to AC power supply needed to synchronize the internal control , and while the power .
External control : not all space inside the lamp has no control chip. When external control is the need for an external controller. Usually outside the control of the lamp function is determined by the controller function.
2 , colorful and full color
Speaking of color , we must understand the relevant knowledge of the three primary colors . Our primary colors of said luminaire is RGB, red, green , and blue. Are additive color mixing , not what we say vulgar Yellow Blue ( subtractive color mixing ) . Changes RGB three color channels and overlay each other to get a wide range of colors they can say includes almost all the colors the human eye can perceive .
Colorful : RGB three colors is simply mixed
Full Color: RGB model using the RGB components of each pixel is assigned a 0 to 255 intensity values ??within the range . Such as: pure red value of R 255, G is 0, B is 0 ; gray, R, G, B three values ??are equal ( except 0 to 255 ) ; White R, G, B are 255 ; black the R, G, B are 0. RGB image using only three colors , so that they can be mixed at different ratios , reproduce 16777216 colors on the screen. In RGB mode , can be used for each RGB component values ??from 0 ( black ) to 255 ( white) . For example , a bright red using the R value of 246, G , and B values ??50 value of 20 when all three scores are equal , resulting in shades of gray . When the value of all the ingredients are 255 , the result is pure white ; When 0:00 this value , the result is pure black.
3 , 16 sections , true and false sixth sixth
We are talking about a segment on the guardrail , can be understood as a pixel , each pixel has a set of RGB lamp beads , is no stranger to us pixels on a computer monitor is said by the pixel resolution point representation.
16 sections of guardrail is a 16 pixel by the constitution , really Liuduan by 6 pixel structure, so that we leave sixth , because he was not constituted by the pixels , but by simply jumping segment to simulate the real sixth segment display. Its essence is colorful hopping .
4 , stand-alone controllers and online controller
LED lighting display controller varied, the common market, the controller can be divided into two kinds of stand-alone and online .
