I work in the sign business and tinker on the side. With menu boards going digital I am curious to the possibility of using a Pi in conjunction with USBto"Display Adapter" (prefer hdmi / dvi or vga would work as well ) for example the "Plugable" (http://plugable.com/products/uga-2k-a/) says it supports linux.
Now I would be looking to display JPEG images or still art with very simply animations (scrolling text) or what not, my problem is extending 3 displays....I am sure it is possible but maybe just a little too past me besides using the USB adapters (if those would even work).
Ideas would be fantastic on this, most digital menu board systems run close to $1500 for a sinlge display, using a cheap LCD tv (Apex 32" LCD $199) and fabricating my own bezels, I could in theory run a Pi with 3 of those screens for only about $700 and would allow me to have amazing remote abilities for updating clients menus instantly from anywhere for half the cost.
Anyways I thought it was worth investigating and getting opinions from those with more linux/Rasp Pi knowledge than me .