The LED display screen is spliced by modules, which has high flexibility and can be freely combined into various shapes of display screens. These special-shaped display screens are widely used in KTV , bars, sand table screens, door arch screens and other occasions. In this issue, we will share with you anapplication case of LED bar screen
A KTV project in a certain place in Shandong has more than 20 private rooms of different sizes, all of which use more than 50 Huidu Technology VP series all-in-one machines and more than 500 R series receiving cards
These displays include regular ( rectangular ), round, hexagonal and polygonal. Let us take a look at which functions of the software are used during debugging.
What is a data set?
Simply put, one R signal of a single-color module is a set of data; two signals of R and G of a two-color module are a set of data; three signals of R, G, and B of a full-color module are a set of data. We can judge how many sets of data a module interface has according to the module interface definition. For example, the common interface of an indoor P4 full-color module is HUB75B , and its interface definition is as follows:
How to set data group offset?
Take the cross screen of the P5 (resolution 64px*32px ) module as an example, as shown in the figure below, the first row and the fourth row are shifted to the left by half the distance of the module ( 32 pixels).
If the cross screen does not shift the data group, the display screen will be dislocated. To solve this problem, we can set the offset of the first and fourth interface data sets to 32 pixels in the debugging software . As shown below:
Comparison before and after setting data group offset
Method demonstration:
During the installation of the display screen, it is often easy to reverse the order of the cable connections, resulting in abnormal display screens, as shown in the following figure:
If the above situation reconnects, sometimes it will be very troublesome. At this time, we can set the data group exchange through the software, as shown in the figure below:
After setting the data group exchange, the display screen is normal, as shown in the figure below:
Method demonstration
If only one or a few receiving cards connected by a network cable need to be set for data group offset or data group exchange, if you do not pay attention, the original parameters will be overwritten when the parameters are sent for the second time, and the receiving card parameter lock function at this time appears to be very important.
Receiving card parameter lock interface↓
