METHOD AND DEVICE FOR TRANSFORMING A FIRST SET OF WRITE PARAMETERS OF A WRITE STRATEGY INTO A SECOND SET OF WRITE PARAMETERS AT A DIFFERENT RECORDING SPEED

摘要

The present invention relates to a method and a corresponding device for transforming afirst set of write parameters (W) of a write strategy, in particular a 2T write strategy,for recording marks in an information layer (301) of a record carrier (30) by irradiatingthe information layer (301) with a pulsed radiation beam (32) at a first recordingspeed (R) into a second set of write parameters (W') of said write strategyfor recording marks at a second recording speed (R'), T representing thelength of one period of a reference clock. In order to achieve an at least acceptablerecording performance at the second recording speed, it is proposed accordingto the present invention that the duration of the write pulses is kept substantiallyconstant in time, and the duration of a complete sequence of write pulses for recordinga mark is kept substantially constant as a fraction of the reference clock T.