Patent ID: 8233367

Claim:
An optical recording method for directing a recording pulse train to an optical disc medium to form marks and spaces thereon and for recording information as information about edge positions of the marks and the spaces between the marks, the recording pulse train having been created by modulating laser light into plural power levels, the method comprising: coding to-be-recorded data into coded data consisting of a combination of the marks and the spaces; classifying each of the marks within the coded data on the basis of its mark length and a space length of a preceding space or a succeeding space; shifting a position of a second pulse edge counted from a starting edge of the recording pulse train for forming the marks and the spaces, depending on the result of said classifying, to adjust the recording pulse train, wherein the recording pulse train includes a first pulse and at least one pulse subsequent to the first pulse, and the second pulse edge corresponds to a falling edge of the first pulse; and directing the recording pulse train to the optical disc medium to form the marks and the spaces thereon.