A system and method for virtual folder sharing, including utilization of static and dynamic lists. The crankshaft flaw detection device is characterized by the perpendicular surface flaw detection head and the pair of shaft flaw detection heads being movable within the perpendicular surface. The arbitration circuit decomposes data packets sent from plural data transfer sources into subunits, and reconstructs plural data packets having the same data transfer target, based on priority and minimum guaranteed bandwidth stored in a control register. It is preferable that the ratio of the Al content in the particle size region of 15 \u03bcm to less than 70 \u03bcm to the Al content in the particle size region of 3 \u03bcm to less than 15 \u03bcm be 1. The resistive film under the common electrode has one or more areas where the resistive film does not exist.