Patent ID: 8223609

Claim:
A method for producing a recording pulse that includes a combination of a leading pulse corresponding to a first recording power, a subsequent intermediate pulse corresponding to a second recording power, and a space pulse corresponding to a third recording power, and for recording data onto an optical disk based on the recording pulse, wherein the first recording power is higher than the second recording power and the third recording power, wherein the second recording power is higher than the third recording power, wherein the leading pulse has a width sufficient to form a beginning portion of a mark, wherein the intermediate pulse has a width sufficient to form an end portion of the mark at a desired position, wherein the method comprises: keeping the third recording power within a range of (i) less than a lower limit of a power required to form the mark and (ii) equal to or higher than half a value of the lower limit at a first linear velocity of the optical disk that is lower than an optimal value specific to the optical disk, and wherein the first recording power at the first linear velocity is lower than the first recording power at a second linear velocity of the optical disk that is equal to or higher than the optimal value specific to the optical disk.