Various computer-implemented methods for determining if actual defects are potentially systematic defects or potentially random defects are provided. The information processing device and the first storage device are communicatively connected to one another. A command transmitting section reads out, whenever occasion calls, the packets from the command file section, and sends them to a printing device. The warhead is initiated either centrally or from either end, depending on the type of target being attacked. Each simulation module can only operate when clock credit is available, and can only operate for some number of clock cycles corresponding to the value of the clock credit. The selection of video segments or slide frames can also be performed on the basis of an additional video significance measure.