Collapsible structures are provided having at least four panels, including a bottom panel, a first panel, a second panel and a third panel. The semiconductor device comprises a metal NMOS gate electrode that is formed on a first part of a substrate, and a silicide PMOS gate electrode that is formed on a second part of the substrate. The vital sign detecting device detects a vital sign value of the patient in the time-course of the hemodialysis treatment. The object beam passes through an object beam unit in which a rendered image is displayed, while the reference beam passes through the reference beam-steering system. Further, a second transmitting device transmits a second signal on a fourth carrier frequency and the relay device retransmits the signal by modulating a fifth andor a sixth carrier frequency. The general-purpose CPU starts counting the number of bits of the reception data in response to a detection signal from the additional circuit, the detection signal indicating the detection of the start bit.