Patent ID: 7031241

Claim:
A method of adjusting a record signal waveform to be recorded on an optical disk, comprising: (a) preparing a plurality of adjustment data groups respectively on a plurality of adjustment items of a record signal waveform, the adjustment data groups being comprised of a plurality of adjustment data including an adjustment datum or a plurality of an adjustment datum, which is prepared based on mark length, previous space length or a combination of mark length and a following space length of a record signal or based on recording linear velocity, and further preparing a plurality of combination information, the combination information being prepared based on disk type information and specifying the adjustment data for each of the plurality of adjustment items for adjusting the record signal waveform; (b) selecting the adjustment data from each of the adjustment data groups in accordance with combination information; and (c) adjusting the record signal waveform in accordance with the adjustment data selected in accordance with the combination information of the adjustment data, wherein the adjustment data are prepared based on mark length, previous space length, a combination of previous space length and mark length, or a combination of mark length and following space length of the record signal, and are prepared such that the same adjustment data may be shared in the plurality of combination information.