Video cameras; electronic switchers for video signals; video and audio/visual systems and components, namely, audio microphone mixers, and system cameras and audio/video recorders that capture, transmit, or record video and audio during meetings or presentations; video and audio/visual system controllers, namely, controllers that power on/off, select audio/video sources for, or operate indirectly, such video and audio/visual systems comprising cameras, electronic switchers, audio/video record...