Embodiments of the present invention include a switch component, incorporated within a computer system, that receives switch commands from users and that controls internal switches to direct output to, and receive input from, either components of the computer system or one or more external-access ports. The semiconductor structure further includes an interfacial layer over the semiconductor substrate, the interfacial layer having a capacitive effective thickness of less than 1. The code amount control unit calculates a quantization scale code corresponding to a target bit rate, which quantization scale code matches visual characteristics, using the normalized activity inputted from the normalized activity calculating unit, and then outputs the quantization scale code to a quantizing unit. The mattress wrap set further includes a top sheet to cover at least most of the top of the mattress, and a plurality of fasteners, with one fastener located at each right-angled corner to removably connect the top sheet to the wrap sheet.