| 摘要 |
The present invention relates to a recording apparatus and a corresponding recording method for recording marks in an information layer (601) of a record carrier (60) by irradiating the information layer by means of a radiation beam, said information layer having a phase reversibly changeable between a first phase and a second phase, wherein a mark is written by a sequence of one or more write pulses, the number of write pulses of the sequence for writing a mark of length NT, T being the length of a reference clock, being determined by application of a predetermined write strategy. To combine the advantages of the known write strategies of the high speed DVD+RW and DVD-RW standards, a recording apparatus is proposed comprising: a radiation source (61) for providing the radiation beam (62), and a control unit (65) for controlling the power of the radiation beam according to a data pulse representing the mark to be written, to provide said sequences of write pulses for recording the marks, said control unit being operative for setting the following parameters: a trailing time (dTmpip,0) of the last pulse of a sequence for writing a mark of length NT, in case N is an odd number, relative to the trailing edge of the last channel bit of the data pulse representing a shortest allowable mark, a trailing time (dTmpip,e) of the last pulse of a sequence for writing a mark of length NT, in case N is an even number, relative to the trailing edge of the last channel bit of the data pulse, and-a lead time (dTip,e) of the last pulse of a sequence for writing a mark of length NT, in case N is an even number, relative to the leading edge of the last channel bit of the data pulse.
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