When a captured image having the first aspect ratio is to be output, the first captured image obtained by imaging the first imaging range is output. To rotate the images, a fast method of rotating digital images is described which requires minimal memory space. The integrated circuit may have a second magnetic material associated therewith. The request for permission is analyzed. The control unit has a center responsiveness improving section that differentiates a signal of the steering torque, adds the differentiated value to the steering assist command value, and carries out a phase advancement compensation to the differentiation. The casing takes the form of an accessory removably mounted on the outlet, and the shutter of said casing is also movably mounted on the cover.