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Scan mode: The ratio of the number of lines lit at the same time to the number of lines in the entire area in a certain display area.
Indoor single and double color is generally 1/16 scan.
Indoor full color is generally 1/8 scan.
Outdoor single and double colors are generally 1/4 scan.
Outdoor full color is generally a static scan.
At present, there are two kinds of driving methods for 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 is generally made of domestic HC595, Taiwan MBI5026. , Japan Toshiba TB62726, generally have 1/2 sweep, 1/4 sweep, 1 / 8 sweep, 1 / 16 sweep.
Here is a description: 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)=512, MBI5026 is a 16-bit chip, 512/16=32
(1) If 32 MBI5026 chips are used, it is static virtual
(2) If you use 16 MBI5026 chips, it is dynamic 1/2 sweep virtual
(3) If you use 8 MBI5026 chips, it is dynamic 1/4 scan virtual
If there are two red lights on the board
(4) Using 24 MBI5026 chips, which are static real pixels
(5) Using 12 MBI5026 chips, it is a dynamic 1/2 sweeping pixel
(6) Using 6 MBI5026 chips, it is a dynamic 1/4 scan pixel
In the LED unit board, the scanning mode is 1/16, 1/8, 1/4, 1/2, static. What if it is different?
One of the easiest ways to do this is to count the number of LEDs on the cell board and the number of 74HC595s.
Calculation method: the number of LEDs divided by the number of 74HC595 and divided by 8 = a fraction of a scan