Scanning method of led display_LED display unit board|outdoor full color led display|Huaze Optoelectronics
In a certain display area of u200bu200bthe LED display, the ratio of the number of lines lit at the same time to the number of lines in the entire area is called the scanning method; the indoor single- and dual-color led display is generally 1/16 scan, and the indoor full-color led display is generally 1 /8 scan, outdoor single and dual-color led display is generally 1/4 scan, outdoor full-color led display is generally static scan. At present, there are two driving methods of LED display on the market: static scanning and dynamic scanning. Static scanning is divided into static real pixels and static virtual. Dynamic scanning is also divided into dynamic real image and dynamic virtual. The driving device generally uses domestic HC595, Taiwan MBI5026 , Japan Toshiba TB62726, generally have 1/2 scan, 1/4 scan, 1/8 scan, 1/16 scan. A list of descriptions: a commonly used full-color module pixel is 16*8 (2R1G1B), if it is driven by MBI5026, the total module used is: 16*8*(2+1+1)u003d512, MBI5026 is 16 bits Chip, 512/16u003d32 (1) If 32 MBI5026 chips are used, it is static virtual (2) If 16 MBI5026 chips are used, it is dynamic 1/2 scan virtual (3) If 8 MBI5026 chips are used, it is dynamic 1 /4 scan virtual if two red lights on the board are connected in series (4) use 24 MBI5026 chips, static real pixels (5) use 12 MBI5026 chips, dynamic 1/2 scan real pixels (6) use 6 MBI5026 The chip is a dynamic 1/4 scanning real pixel on the LED display, scanning methods are 1/16, 1/8, 1/4, 1/2, static. How to distinguish? One of the easiest way is to count the number of LEDs on the LED display unit board and the number of 74HC595. Calculation method: the number of LEDs divided by the number of 74HC595 and then divided by 8 u003d a fraction of the scanning real pixel corresponds to the virtual: in simple terms, the real pixel screen refers to the red, green and blue light-emitting tubes that make up the display Each of the luminous tubes only participates in the imaging use of one pixel in order to obtain sufficient brightness. The virtual pixel uses a software algorithm to control the light-emitting tube of each color to finally participate in the imaging of multiple adjacent pixels, so that a larger resolution can be achieved with fewer tubes, and the display resolution can be improved. The above is the LED display scanning method summarized by the editor based on the assistance of the technical staff of Huaze Optoelectronics. I hope it will be helpful to everyone.