LED display Gray scale nonlinear transformation
Gray-scale non-linear transformation refers to the gray-scale data in accordance with the empirical data or some arithmetic nonlinear relationship to transform and then provided to the display. As the LED is a linear device, with the traditional display of non-linear display characteristics are different. In order to enable LED display to meet the traditional data source without loss of gray level, generally in the LED display system will do after the gray-scale data nonlinear transformation, the number of bits after conversion will increase (to ensure that no loss of gray data). Some of the domestic control system supplier of the so-called 4096 gray or 16384 level of gray or higher refers to the non-linear transformation after the size of gray space. 4096 is the use of 8-bit to 12-bit space of the nonlinear transformation technology, 16384 is the use of 8 to 16-bit nonlinear transformation technology. From the 8-bit source to do non-linear transformation, the conversion space is certainly greater than the 8-bit source. Generally at least 10 bits. Like the same gray, this parameter is not the bigger the better, the general 12 can do enough to change the.
Drive mode
Common drive mode is generally constant voltage drive and constant current drive, constant voltage drive is a constant voltage input drive, light the screen. This is rare. Constant current drive is to provide a constant current drive, light large screen. Common is 1 / 8,1 / 4,1 / 16 scan mode. These so-called scanning means that a few similar lights with a drive chip to drive control. Of course, the more the drive chip brightness, the higher the refresh rate, then the higher the cost. General 1/8 is a good choice.
