COEX Feature Common Question and Answer

How does 22bit low-level grayscale impact the system? Is it internal to the processor or unique to the receiving card?

22bit+ (also called 22bit low-gray enhancement) is a core feature of NovaStar’s Image Booster function. It is implemented primarily on supported receiving cards (e.g., A10s Pro, A8s, A8s-N, and above)—not exclusively in the processor or driver IC.
The algorithm dynamically boosts low-grayscale (especially 0 to low-brightness regions) from standard 16bit to an effective 22bit+ level (up to 64× dynamic contrast improvement), eliminating common LED issues like grayscale loss, contouring, and dark-area blocking at low brightness.
Workflow: Processor outputs highbit data → Receiving card applies NCP file’s precise grayscale correction + 22bit+ algorithm → Delivers ultra-high precision control to the driver IC in low-gray areas.
This significantly improves dark-field performance, delivering rich layering without breaks—even at very low brightness—making it ideal for indoor fine-pitch, xR/VP, and broadcast-grade applications.

When the canvas of a COEX device is divided into two parts to load two LED screens, can the color temperature, RGB brightness components, brightness, and gamma be adjusted individually for each LED screen?

For brightness, gamma, and RGB brightness components, VMP supports adjustment at the cabinet level. However, it is important to note that adjusting RGB brightness components requires receiving card models A10s Pro, CA50E, or XA50 Pro, with firmware version V1.5.3.0 or above.
For color temperature, which is a function of the image booster, it can currently only be adjusted based on the entire canvas. The V1.6.0 version of VMP will introduce image booster adjustment functions at the port level.

What happens if an unsupported receiving card is connected to a COEX sending card?

VMP will show an error indicating that there is an unsupported receiving card model under the Ethernet port in port list of layout interface, and cabinet topology cannot be performed.

How can the calibration coefficient management license be obtained?

This license requires users to communicate their requirements with a NovaStar FAE and apply for it. After the application is approved, the license can be imported into VMP software for use.