Patent ID: 7272094
Filing Date: 2007-09-18
Classification: G11B

Abstract:
1. A method of recording marks representing data in a recording medium, the method comprising: providing a recording medium comprising an information layer having a phase which is reversibly changeable between a crystal phase and an amorphous phase, by irradiating the information layer with a pulsed radiation beam, recording multiple marks each mark being written by a sequence or pulses comprising at least one write pulse, the written marks being erasable by irradiating the information layer with a radiation beam having an erase power level, a first write pulse of a sequence of pulses being preceded by a cooling pulse having a cooling power level which is lower than the erase power level, said radiation beam being generated by a radiation source, a last write pulse of a sequence is directly followed by a rear heating pulse having a rear heating power level, the rear beating power level being higher than the erase power level, the rear heating power level being different than the power level of the last write pulse a stored value for determining the rear heating power level being read from the medium.