The present invention relates to a solution treatment unit for supplying a treatment solution to a substrate to treat the substrate within a treatment container, and an inner container surrounding an outer periphery of the horizontally held substrate with its upper and lower faces open is provided in the treatment container. An electric motor system provided with the improved discharge method for discharge of the DC bus includes an electric motor, the inverter which provides electric control for the permanent magnet electric motor, the direct current bus which provides power to the inverter, and a processor. The hook is bent to form a spring having a terminal leg and a depending leg. The manner in which the random data is selected and applied by the permutation logic unit ensures that each of the data elements in the input block will be mapped into an output position in the output block. The techniques and structures may be used to allow closed loop MIMO beamforming to be performed within a device that does not include singular value decomposition circuitry.