A perpendicular magnetic recording medium has a granular magnetic layer and a nonmagnetic underlayer of a metal or an alloy having a hexagonal closest-packed crystal structure. The apparatus includes a decoder for decoding pictures for at least one view corresponding to multi-view video content from a bitstream. A mechanism may be provided to control a frequency of the PCI-X bus based on the determined number of PCI-X cards coupled to the bus. Thus the umbrella cloth can be folded easily, rapidly, and directly with a beautiful outlook and a small size. The adjustment portion is adapted for selectively adjusting the receiver in accordance with stored historic observation data.