The invention relates to a spatial diversity receiving device and an input channel switching method. The hydrometallurgical process of the present invention, comprising a leaching stage which stirs the slurried ore in the presence of sulfuric acid at 220 to 280\xb0 C. This multilayer film has the high reflection characteristics in relation to three primary colors wavelength bands lights, and has the high absorption characteristics in relation to lights other than the three primary colors wavelength bands lights. Means for scrambling are A scrambling section is provided to scramble each spread symbol with a respective scrambling code, the scrambling codes respectively having the same length as the spreading codes. The tines include primary tines and secondary tines that are shorter than the primary tines. Different passes through the matrix are timed so that different computations requiring the same functional units arrive at different time slots.