A multilevel information recording apparatus is disclosed, which includes
a control unit that inputs signals to a strategy generating unit and a
laser drive unit based on the multilevel information being recorded, a
signal indicating the playback and recording state, and a clock signal
indicating the cell frequency that is in synch with the multilevel
information. The strategy generating unit generates a pulse signal in
accordance with the timing of the laser beam emission of a write pulse,
an off pulse, a bias pulse, and a space pulse based on the signal from
the control unit and the clock signal. The laser drive unit determines
the driving current of a laser light source based on a delayed playback
signal/delayed recording signal that is obtained by delaying the playback
signal/recording signal for a processing time of the strategy generating
unit, a pulse signal from the strategy generating unit indicating the
emission timing of the pulses, and an intensity signal predetermined for
each pulse.