Patent ID: 7342860

Claim:
An apparatus to record data on an optical recording medium, the apparatus comprising: a recording waveform generator to generate a recording waveform having an erase pattern comprising a multi-pulse having a high level and a low level, wherein a power level of a first pulse of the erase pattern is set to the low level of the multi-pulse, and a power level of a period between an end of the erase pattern and a start point of a first pulse of a recording pattern is set to the high level of the multi-pulse based on pulse information stored on the optical recording medium; and a pickup unit to radiate a light onto the optical recording medium according to the generated recording waveform to form a mark or a space; wherein the pulse information stored on the optical recording medium comprises: power level information regarding the power level of the first pulse of the erase pattern, and the power level of the period between the end of the erase pattern and the start point of the first pulse of the recording pattern; and duration information regarding a duration of the period between the end of the erase pattern and the start point of the first pulse of the recording pattern.