audio visual equipment and video conferencing systems comprising amplifiers, speakers, projectors, projection screens, remote control units, transmitters, receivers, compressors, coders, decoders, televisions, LCD screens, computers, cabinets, monitors, microphones, transformers, cameras, mixers, DVD/VCRs, wires, cables, switchers, plasma displays, computer interfaces, video scan converters and scalers, touch panels, digital signal processors, video/audio servers, web-based streaming encoders...