A high-speed bidirectional serial connection between a PC used to transfer data between the computer and peripherals such as digital cameras and memory cards. The USB 2.0 specification, announced in 2000, provides a data rate of up to 480 Mbps, 40 times faster than the original specification which provided only 12 Mbps.
Ultra Wideband. A relatively new term that is used to describe a technology known since the early 1960s as carrier-free, baseband or impulse. UWB transmits and receives extremely short bursts of radio signals, typically a few trillionths of a second to a few billionths of a second (nanoseconds) in duration. These bursts produce waveforms that are extremely broadband.