A hot-plugging capability for video devices is achieved by shifting the responsibility for recognizing changes in the configuration of a display environment from a computer’s operating system to a device manager. Pieces of content data are associated with corresponding metadata. Reflected IR light and the IC power supply current are measured and processed using Fourier Transformation computations. Characteristics of a plasma formed in the chamber establish a sheath modulation at the desired frequency. A number of correlators is also provided. The washing machine comprises a water reservoir to contain washing water, a sterilizer sterilizing the washing water through an electrolysis process, and a circulator circulating the washing water in the sterilizer.