Apparatus and method for tuning the magnetic field of brushless motors and alternators to obtain efficient operation over a broad RPM range. The image identification device includes a target image input unit inputting a target image, a block image generation unit generates block images, a feature quantity computing unit computes feature quantities of the block images, and a category determination unit determines whether the block images are classified into the categories or not. A third contact is provided on the drain region, first and second contacts are formed on the n+ type diffusion region, and the first contact is connected to a pad. When the mobile station may be inter-band re-directed, the infrastructure re-directs the mobile station to a second RF band of the multiple RF bands.