Patent ID: 8773963

Claim:
An optical disk recording method used for an optical disk having a recording film capable of being changed to an optically different state by irradiation with an energy beam to thereby record information, the method comprising steps of: recording information on the optical disc with a mono-pulse and a multi-pulse chain in accordance with setting-values; changing a position and a width of a first pulse in the mono-pulse and the multi-pulse chain based on a first table and a second table; and changing a position and a width of a last pulse in the multi-pulse chain based on a third table and a fourth table, wherein: the setting values concerning the mono-pulse and the multi-pulse chain are expressed as a product of coefficients and a reference clock Tw divided by a predetermined integer, the mono-pulse that is the first pulse is used when recording a mark having a smallest mark length to the optical disc and the multi-pulse chain is used when recording a mark having a mark length larger than the smallest mark length to the optical disc, the smallest mark length being 2Tw and the mark length larger than the smallest mark length being greater than or equal to 3Tw, the first table is designed to specify the position of the first pulse and has an integer value for specifying the coefficients of the smallest mark length and the mark length larger than the smallest mark length, the integer value of the smallest mark length depending on a preceding space length and a succeeding space length and the integer value of the mark length larger than the smallest mark length depending on a recording mark length and a preceding space length, the second table is designed to specify the width of the first pulse and has an integer value for specifying the coefficients of the smallest mark length and the mark length larger than the smallest mark, the integer value of the smallest mark length depending on a preceding space length and a succeeding space length and the integer value of the mark length larger than the smallest mark length depending on a recording mark length and a preceding space length, the third table is designed to specify the position of the last pulse and has an integer value for specifying the coefficients of the mark length larger than the smallest mark, the integer value of the mark length larger than the smallest mark length depending on a recording mark length and a succeeding space length, and the fourth table is designed to specify the width of the last pulse and has an integer value for specifying the coefficients of the mark length larger than the smallest mark, the integer value of the mark length larger than the smallest mark length depending on a recording mark length and a succeeding space length.