Patent ID: 8358569

Claim:
An optical disc recording method used for an optical disc 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 being provided for recording information as a recording mark length and preceding and following space lengths in the optically different state by irradiating the recording film with a multi-pulse chain of the energy beam having at least two emission power levels each having an emission time changed in accordance with the optical disc while there is relative movement between said energy beam and a surface of said recording film of the optical disc, the method comprising steps of: recording information on the optical disc with the multi-pulse chain using setting-values; and changing a position and a width of a first pulse in the multi-pulse chain on the basis of a first table and a second table, wherein: the setting-values concerning the multi-pulse chain for predetermined recording velocity are expressed as a product of coefficients and a reference clock divided by a predetermined integer, and coefficients are expressed as integers; coefficients are expressed as a sum of a reference value and an offset value, the first table is designed to specify the position of the first pulse and has first offset values, the first offset values being defined based on at least preceding space length and recording mark length, and the second table is designed to specify the width of the first pulse and has second offset values, the second offset values being defined based on at least preceding space length and recording mark length.