Recording method of phase-change optical disc

The present invention relates to a recording method of a phase-change optical disc. In the present invention, when record each recording mark in the recording pulse of a smaller number than the channel bit length or 3T is recorded with a single writing pulse and the recording marks other than the 3T is recorded in a smaller number than the channel bit length pulse when recording, the control of the 4T or more recording marks, the channel bit length is divided into two groups, the second group of the first group even the record mark and the channel bit of the recording length is odd mark, different recording pulse of the two groups do. Accordingly, even when the recording speed is increased and the recording density of the thermal interference is serious, more closely, and clearly the distribution of marks and spaces recorded, the length of one mark and a space recorded 4T to the channel bit length of the marks and spaces there is an effect to be separated. The phase change optical disc, the recording pulse, mark, space, jitter, channel bit length, thermal interference