Patent ID: 7295505

Claim:
A method of recording data on an optical recording medium, the method comprising: generating channel modulated digital data; generating a recording waveform having an erase pattern containing a multi-pulse of pulses having corresponding low and high powers, and a recording pattern in response to the channel modulated digital data; and forming a first level of the channel modulated digital data as a mark and forming a second level of the channel modulated digital data as a space by using the generated recording waveform, wherein: the generating of the recording waveform comprises causing a power of a period between an end point of the erase pattern and a start point of the recording pattern to be the high power of the multi-pulse and a power of a leading pulse of the erase pattern to be the low power or the high power of the multi-pulse, the generating of the channel modulated digital signal comprises forming a first level of an NRZI data signal as the mark and a second level of the NRZI data signal as the space, and the generating of the recording waveform comprises forming a cooling pulse as a part of the erase pattern, the cooling pulse having a cooling power below the low power of the multi-pulse.