@element14 Community member shabaz shows how to use the BeagleBone Black’s real-time units interface a camera without USB:
“This was an interesting exercise to try to get simple camera capability for the BeagleBone Black directly (without USB) for some low-resolution imaging ideal for some machine vision use-cases, robotics and movement detection. The lower resolution means there is less data to process, and the opportunity to connect multiple cameras (e.g. for stereo vision).”
http://www.element14.com/community/community/knode/single-board_computers/next-gen_beaglebone/blog/2013/08/18/bbb--imaging-with-a-pru-connected-camera