Alphablender

The alpha blender makes it possible to mix two images (e.g. PC image and vehicle series image) with each other using a freely definable, dynamic alpha mask if required.

It can be decided for each individual display pixel whether the original pixel or the pixel from the PC image is displayed and with which transparency the overlay takes place (0-100%). One of the main applications of the alpha blender is image composition: as with a photomontage, an object is to be cut out of an image and inserted into a new image. Not only the faded area, but also the transparency of the superimposed image can be freely defined.

This means that, for example a warning graphic can be superimposed over the original display content of an MMI screen/combination display screen/HU screen either completely opaque or partially transparent. The type of overlay is realized with an alpha mask. The dynamic mask can be modified for each frame. This also allows dynamic animations and transitions.

The alpha blender has an LVDS/APIX-input, a DVI input and an LVDS/APIX output for the display, as well as a CAN interface. The Blender system is latency-free and operates without a PC - the Alphablender is implemented on an FPGA.