Disclosed is an information processing device and a task switching method that can reduce the time required for switching of tasks in a plurality of coprocessors. Three video PES packets, each being formed of one video frame, are combined to form a video editing unit. The battery pack includes an interrupter inserted in the charge current path, and an over-charge detector which detects a cell voltage across each of the secondary cells and actuates the interrupter to open the charge current path when any one of the cell voltages becomes higher than a predetermined threshold. A graphics generator disposed in the rotating propeller assembly is in electrical communication with the electrical interconnection sheet to control illumination of the LEDs while the propeller assembly rotates. The blade member is turned by a feed roller in synchronization with a movement operation of the blade member that rotates by a contact friction force generated when the blade member is put into contact with a contact member fixedly provided halfway a movement path of the blade member. to form a body containing silicon carbide and non-graphitic carbon.