Patent ID: 7301884

Claim:
An apparatus for recording data on an optical recording medium, comprising: a recording waveform generating unit which generates a recording waveform having an erase pattern containing a leading pulse and a multi-pulse having a high power level and a low power level and a recording pattern containing recording pulses, a power level of the leading pulse of the erase pattern being the low power level of the multi-pulse and a power level of a period between an end point of the erase pattern and a start point of a leading pulse of the recording pattern being the high power level of the multi-pulse; and a pickup unit which generates light to the optical recording medium according to the generated recording waveform so that a mark or a space is formed on the optical recording medium, wherein the recording waveform generating unit generates a further multi-pulse of another recording pattern, and a cooling pulse having a cooling power level less than the low power level of the multi-pulse and connecting the leading pulse of the erase pattern and another portion of the further multi-pulse of the another recording pattern.