Today was the first time that some audio-visual equipment was used in a court trial. As you can see from the photos, there are 2 projectors mounted in the ceiling that point to 2 different automated viewing screens. The angles of each give a way for the audience or the jury/court  to see, say, a presentation or a video. After a given screen is no longer being used, it retracts into the ceiling. At this point, a laptop or other computer outputs to the screen, and in the future there are plans for any other computer or smart phone devices, etc to be able to output as well. 

Here's video of where this was discussed in the March, 2017 meeting