METHOD AND DEVICE FOR OPTICAL RECORDING ONTO OPTICAL DISC MEDIUM

摘要

There is provided an optical recording method for modulating a laser beam by switching with multi-stage power to obtain a recording pulse string, applying the recording pulse string onto an optical disc medium so as to form marks, and recording information as the marks and edge position information on a space between the marks. The recording data is encoded to generate encoded data which is a combination of a mark and a space. Among the encoded data, the marks are classified according to a combination of the mark length and the preceding and following space length. The position of the second pulse edge from the end of the recording pulse string for forming the mark is varied in accordance with the classification result to control the recording pulse string. The recording pulse string is applied to the optical disc medium to form the marks.