A method for transmitting a plurality of input streams from a transmitting unit to a receiving unit receives the plurality of input data streams and each of the plurality of input data streams are processed to generate a parallel pair of data streams including an in-phase stream and a quadrature-phase stream for each of the plurality of input data streams. The lower seat back portion and the upper seat back portion are independently adjustable. The publication has pages which can be turned and the publication can be manipulated with the appearance of being manipulated in three dimensions.