A recreational structure comprises a rebounding-surface frame forming a closed shape, and at least one panel disposed between the rebounding-surface frame and a support surface. Before video signals having opposite polarities are applied to signal lines, first, a full-line precharge pulse is generated in the horizontal blanking periods, and precharge gray signals which have the same polarity as that of the previous pixel potential are written together based on the full-line precharge pulse. A portion of a process is first received at one of the processing nodes for processing of that portion thereat. A profile information package containing subscriber preferences is transmitted from the subscriber to the content source by way of a proxy over the network distribution path, and the profile information package is stored at the content source.