How many scanning modes are there for electronic display screen?
Author:feng9558 Time:2021-09-12 08:04 Browse(146)
Generally speaking, the row and column control mode is used in the general control method of indoor screen, which is commonly known as the scanning mode. At present, the driving mode of LED electronic display has two kinds: static scanning and dynamic scanning. The static scanning is divided into static real pixel and static virtual, and the dynamic scanning is also divided into dynamic real image and dynamic virtual. For example, buroke LED electronic display is divided into indoor full-color LED electronic display scanning mode: P4 and P5 are constant current 1 / 16, P6 and p7.62 are constant current 1 / 8; The scanning mode of outdoor full-color LED electronic display: P10 and p12 are constant current 1 / 2 and 1 / 4, p16, P20 and P25 are static; Single and double color LED electronic display screen/
Generally speaking, the row and column control mode is commonly used in the control of indoor screens, which is commonly known as the scanning mode. At present, the driving modes of LED electronic displays are static scanning and dynamic scanning. The static scanning is divided into static real pixels and static virtual pixels, Dynamic scanning is also divided into dynamic real image and dynamic virtual image.
for example, burdock LED electronic display is divided into indoor full-color LED electronic display scanning mode: P4 and P5 are constant current 1 / 16.
P6 and p7.62 are constant current 1 / 8; The scanning mode of outdoor full-color LED electronic display: P10 and p12 are constant current 1 / 2 and 1 / 4, p16, P20 and P25 are static; The scanning methods of single and double color LED electronic displays are mainly constant current 1 / 4, constant current 1 / 8, and constant current 1 / 16.

in the LED electronic displays with full color.
in single color and double color series products, the scanning methods are 1 / 16, 1 / 8, 1 / 4, 1 / 2, static, etc.
What about the difference? One of the simplest methods is to count the number of LEDs and 74HC595 on the LED large screen unit board.

calculation method: divide the number of LEDs by 74HC595, and then divide by 8=a fraction of scanning
the real pixel LED electronic screen corresponds to the virtual LED electronic display screen: in short,
the real pixel screen refers to each of the three light-emitting diodes that constitute the LED display screen The end of led only takes part in the imaging application of one pixel to obtain the satisfied brightness.

virtual pixel is to use software algorithm to control the end of each color led to take part in the imaging of multiple adjacent pixels.
and then use fewer lamps to achieve greater resolution, which can improve the display resolution by four times.

in the full-color LED display series products, there are 16 scans.
in this paper, the development of virtual pixel is introducedThere are some differences between them:
1. The scanning methods of LED screen are different
2. The brightness of LED screen is different (16S is less than 8s is less than 4S)
3. The quotation is different. It may be understood that the number of driver IC chips used is different (the same type of 16S is less than 8s is less than 4S)
at present, the LED screen on the market can be roughly divided into two methods: static scanning and dynamic scanning! Static scanning is divided into static real pixels and static virtual! Dynamic scanning can also be divided into dynamic real image and dynamic virtual image, including 2, 4, 8 and 16 scans.

to illustrate, the commonly used full-color module pixel of an outdoor PH16 full-color LED display screen is 16 * 8 (2R1G1B).
if it is driven by mbi5026, the module uses:
16 * 8 * (2 + 1 + 1)=512 lights, mbi5026 is a 16 bit chip, 512 / 16=32
(1) if it is driven by 32 mbi5026 chips, It's static virtual
(2) if 16 mbi5026 chips are used, it's dynamic 1 / 2 scan virtual
(3) if 8 mbi5026 chips are used, it's dynamic 1 / 4 scan virtual
(4) if 24 mbi5026 chips are used, it's static real pixels
(5) if 12 mbi5026 chips are used, it's dynamic 1 / 2 scan real pixels
(6) if 6 mbi5026 chips are used, It's a dynamic quarter scan pixel,
Hot labels
Related topics