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Driving is indispensable an important part of LED electronic display screen. LED display manufacturers - ralink display technical personnel for the driver is also very seriously.
Currently on the market of LED electronic display driver means has two kinds of static scan and dynamic scan, static scan is divided into static compaction pixels and static virtual, dynamic scanning is also divided into dynamic realities and dynamic virtual.
In certain display area, at the same time, light up the number of rows and the whole area in proportion to the number of lines, called scanning way; Indoor double color is commonly 1/16 scanning, indoor full color LED display is typically 1/8 scanning, outdoor single color is usually 1/4 scan, outdoor full-color displays is generally static scan. MBI5026 driver IC generally HC595 are needed in China, Taiwan, Japan's Toshiba TB62726, generally has a 1/2, 1/4, 1/8, 1/16.
Column to illustrate: a common full-color module is 16 * 8 pixels (2 r1g1b), module using led lights is: a total of 16 * 8 (2 + 1 + 1) = 512, if use MBI5026 drive, MBI5026 for 16 chip, 512/16 = 32 (1) if the 32 MBI5026 chip, is static virtual (2) if use 16 MBI5026 chips, is a dynamic virtual (3) if use 8 1/2 sweep MBI5026 chips, is a dynamic 1/4 sweep virtual panel (4) if the two red lights series, with 24 MBI5026 chip, real pixels are static (5) with 12 MBI5026 chip, sweep is dynamic 1/2 pixel (6) use six MBI5026 chips, is a dynamic 1/4 scan pixels.
In the LED unit board, scanning mode, 1/16, 1/8, 1/4, 1/2, static. If to distinguish? One of the most simple way is to count cell plate led lights and the number of 74 hc595 are needed. Method: LED divided by the number of divided by the number of 74 hc595 are needed 8 = a fraction of a scan.
Real pixels and virtual is corresponding in simple terms, real pixel screen is refers to a display of red, green, blue three kinds of luminous tube in each kind of luminous tube only participate in a pixel imaging using, in order to obtain enough brightness. Virtual pixels is to use the software algorithm control each color light-emitting tube eventually involved in multiple imaging of adjacent pixels, so that with less tubes of resolution, large to make the display resolution increase four times.
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