An information recording medium and information processing device are provided so that recording medium-identifying ID information cannot be rewritten. A driving motor is mounted at one end of the reference frame for generating a linear reciprocating driving force. A variety of aesthetic wave shapes can be created, such as an unbroken wave face, a white water bore, a spilling breaking wave, or a tunnel wave. The propulsion unit is operable such that in at least one interval of the ground speed of the tractor, the electrical fraction of the power delivered or absorbed by the electrical machines is zero. A photodetector generates a monitor signal from the optical RZ-DQPSK signal. According to this cutting device, an object formed of a single member such as glass, ceramics, resin, metal, or the like, or a composite member thereof can be cut continuously with one kind of cutting tool.